diff options
Diffstat (limited to 'arch/microblaze')
35 files changed, 2841 insertions, 0 deletions
diff --git a/arch/microblaze/config.mk b/arch/microblaze/config.mk new file mode 100644 index 0000000..b4935f0 --- /dev/null +++ b/arch/microblaze/config.mk @@ -0,0 +1,35 @@ +# +# (C) Copyright 2007-2008 Michal Simek +# Michal SIMEK <monstr@monstr.eu> +# +# (C) Copyright 2004 Atmark Techno, Inc. +# Yasushi SHOJI <yashi@atmark-techno.com> +# +# See file CREDITS for list of people who contributed to this +# project. +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License as +# published by the Free Software Foundation; either version 2 of +# the License, or (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, +# MA 02111-1307 USA +# + +CROSS_COMPILE ?= mb- + +CONFIG_STANDALONE_LOAD_ADDR ?= 0x80F00000 + +PLATFORM_CPPFLAGS += -ffixed-r31 -D__microblaze__ + +LDSCRIPT ?= $(SRCTREE)/$(CPUDIR)/u-boot.lds + +CONFIG_ARCH_DEVICE_TREE := microblaze diff --git a/arch/microblaze/cpu/Makefile b/arch/microblaze/cpu/Makefile new file mode 100644 index 0000000..1c169dd --- /dev/null +++ b/arch/microblaze/cpu/Makefile @@ -0,0 +1,48 @@ +# +# (C) Copyright 2000-2006 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. +# +# See file CREDITS for list of people who contributed to this +# project. +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License as +# published by the Free Software Foundation; either version 2 of +# the License, or (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, +# MA 02111-1307 USA +# + +include $(TOPDIR)/config.mk + +LIB = $(obj)lib$(CPU).o + +START = start.o +SOBJS = irq.o +COBJS = cpu.o interrupts.o cache.o exception.o timer.o + +SRCS := $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c) +OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS)) +START := $(addprefix $(obj),$(START)) + +all: $(obj).depend $(START) $(LIB) + +$(LIB): $(OBJS) + $(call cmd_link_o_target, $(OBJS)) + +######################################################################### + +# defines $(obj).depend target +include $(SRCTREE)/rules.mk + +sinclude $(obj).depend + +######################################################################### diff --git a/arch/microblaze/cpu/cache.c b/arch/microblaze/cpu/cache.c new file mode 100644 index 0000000..ce066b9 --- /dev/null +++ b/arch/microblaze/cpu/cache.c @@ -0,0 +1,85 @@ +/* + * (C) Copyright 2007 Michal Simek + * + * Michal SIMEK <monstr@monstr.eu> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <asm/asm.h> + +int dcache_status (void) +{ + int i = 0; + int mask = 0x80; + __asm__ __volatile__ ("mfs %0,rmsr"::"r" (i):"memory"); + /* i&=0x80 */ + __asm__ __volatile__ ("and %0,%0,%1"::"r" (i), "r" (mask):"memory"); + return i; +} + +int icache_status (void) +{ + int i = 0; + int mask = 0x20; + __asm__ __volatile__ ("mfs %0,rmsr"::"r" (i):"memory"); + /* i&=0x20 */ + __asm__ __volatile__ ("and %0,%0,%1"::"r" (i), "r" (mask):"memory"); + return i; +} + +void icache_enable (void) { + MSRSET(0x20); +} + +void icache_disable(void) { + /* we are not generate ICACHE size -> flush whole cache */ + flush_cache(0, 32768); + MSRCLR(0x20); +} + +void dcache_enable (void) { + MSRSET(0x80); +} + +void dcache_disable(void) { +#ifdef XILINX_USE_DCACHE + flush_cache(0, XILINX_DCACHE_BYTE_SIZE); +#endif + MSRCLR(0x80); +} + +void flush_cache (ulong addr, ulong size) +{ + int i; + for (i = 0; i < size; i += 4) + asm volatile ( +#ifdef CONFIG_ICACHE + "wic %0, r0;" +#endif + "nop;" +#ifdef CONFIG_DCACHE + "wdc.flush %0, r0;" +#endif + "nop;" + : + : "r" (addr + i) + : "memory"); +} diff --git a/arch/microblaze/cpu/cpu.c b/arch/microblaze/cpu/cpu.c new file mode 100644 index 0000000..4d2b270 --- /dev/null +++ b/arch/microblaze/cpu/cpu.c @@ -0,0 +1,25 @@ +/* + * (C) Copyright 2004 Atmark Techno, Inc. + * + * Yasushi SHOJI <yashi@atmark-techno.com> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +/* EMPTY FILE */ diff --git a/arch/microblaze/cpu/exception.c b/arch/microblaze/cpu/exception.c new file mode 100644 index 0000000..0365de3 --- /dev/null +++ b/arch/microblaze/cpu/exception.c @@ -0,0 +1,74 @@ +/* + * (C) Copyright 2007 Michal Simek + * + * Michal SIMEK <monstr@monstr.eu> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <asm/asm.h> + +void _hw_exception_handler (void) +{ + int address = 0; + int state = 0; + /* loading address of exception EAR */ + MFS (address, rear); + /* loading excetpion state register ESR */ + MFS (state, resr); + printf ("Hardware exception at 0x%x address\n", address); + switch (state & 0x1f) { /* mask on exception cause */ + case 0x1: + puts ("Unaligned data access exception\n"); + break; + case 0x2: + puts ("Illegal op-code exception\n"); + break; + case 0x3: + puts ("Instruction bus error exception\n"); + break; + case 0x4: + puts ("Data bus error exception\n"); + break; + case 0x5: + puts ("Divide by zero exception\n"); + break; +#ifdef MICROBLAZE_V5 + case 0x1000: + puts ("Exception in delay slot\n"); + break; +#endif + default: + puts ("Undefined cause\n"); + break; + } + printf ("Unaligned %sword access\n", ((state & 0x800) ? "" : "half")); + printf ("Unaligned %s access\n", ((state & 0x400) ? "store" : "load")); + printf ("Register R%x\n", (state & 0x3E) >> 5); + hang (); +} + +#ifdef CONFIG_SYS_USR_EXCEP +void _exception_handler (void) +{ + puts ("User vector_exception\n"); + hang (); +} +#endif diff --git a/arch/microblaze/cpu/interrupts.c b/arch/microblaze/cpu/interrupts.c new file mode 100644 index 0000000..7f2ee64 --- /dev/null +++ b/arch/microblaze/cpu/interrupts.c @@ -0,0 +1,218 @@ +/* + * (C) Copyright 2007 Michal Simek + * (C) Copyright 2004 Atmark Techno, Inc. + * + * Michal SIMEK <monstr@monstr.eu> + * Yasushi SHOJI <yashi@atmark-techno.com> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <command.h> +#include <malloc.h> +#include <asm/microblaze_intc.h> +#include <asm/asm.h> + +#undef DEBUG_INT + +void enable_interrupts(void) +{ + MSRSET(0x2); +} + +int disable_interrupts(void) +{ + unsigned int msr; + + MFS(msr, rmsr); + MSRCLR(0x2); + return (msr & 0x2) != 0; +} + +static struct irq_action *vecs; +static u32 irq_no; + +/* mapping structure to interrupt controller */ +microblaze_intc_t *intc; + +/* default handler */ +static void def_hdlr(void) +{ + puts("def_hdlr\n"); +} + +static void enable_one_interrupt(int irq) +{ + int mask; + int offset = 1; + + offset <<= irq; + mask = intc->ier; + intc->ier = (mask | offset); +#ifdef DEBUG_INT + printf("Enable one interrupt irq %x - mask %x,ier %x\n", offset, mask, + intc->ier); + printf("INTC isr %x, ier %x, iar %x, mer %x\n", intc->isr, intc->ier, + intc->iar, intc->mer); +#endif +} + +static void disable_one_interrupt(int irq) +{ + int mask; + int offset = 1; + + offset <<= irq; + mask = intc->ier; + intc->ier = (mask & ~offset); +#ifdef DEBUG_INT + printf("Disable one interrupt irq %x - mask %x,ier %x\n", irq, mask, + intc->ier); + printf("INTC isr %x, ier %x, iar %x, mer %x\n", intc->isr, intc->ier, + intc->iar, intc->mer); +#endif +} + +int install_interrupt_handler(int irq, interrupt_handler_t *hdlr, void *arg) +{ + struct irq_action *act; + + /* irq out of range */ + if ((irq < 0) || (irq > irq_no)) { + puts("IRQ out of range\n"); + return -1; + } + act = &vecs[irq]; + if (hdlr) { /* enable */ + act->handler = hdlr; + act->arg = arg; + act->count = 0; + enable_one_interrupt (irq); + return 0; + } + + /* Disable */ + act->handler = (interrupt_handler_t *) def_hdlr; + act->arg = (void *)irq; + disable_one_interrupt(irq); + return 1; +} + +/* initialization interrupt controller - hardware */ +static void intc_init(void) +{ + intc->mer = 0; + intc->ier = 0; + intc->iar = 0xFFFFFFFF; + /* XIntc_Start - hw_interrupt enable and all interrupt enable */ + intc->mer = 0x3; +#ifdef DEBUG_INT + printf("INTC isr %x, ier %x, iar %x, mer %x\n", intc->isr, intc->ier, + intc->iar, intc->mer); +#endif +} + +int interrupts_init(void) +{ + int i; + +#if defined(CONFIG_SYS_INTC_0_ADDR) && defined(CONFIG_SYS_INTC_0_NUM) + intc = (microblaze_intc_t *) (CONFIG_SYS_INTC_0_ADDR); + irq_no = CONFIG_SYS_INTC_0_NUM; +#endif + if (irq_no) { + vecs = calloc(1, sizeof(struct irq_action) * irq_no); + if (vecs == NULL) { + puts("Interrupt vector allocation failed\n"); + return -1; + } + + /* initialize irq list */ + for (i = 0; i < irq_no; i++) { + vecs[i].handler = (interrupt_handler_t *) def_hdlr; + vecs[i].arg = (void *)i; + vecs[i].count = 0; + } + /* initialize intc controller */ + intc_init(); + enable_interrupts(); + } else { + puts("Undefined interrupt controller\n"); + } + return 0; +} + +void interrupt_handler(void) +{ + int irqs = intc->ivr; /* find active interrupt */ + int mask = 1; +#ifdef DEBUG_INT + int value; + printf ("INTC isr %x, ier %x, iar %x, mer %x\n", intc->isr, intc->ier, + intc->iar, intc->mer); + R14(value); + printf ("Interrupt handler on %x line, r14 %x\n", irqs, value); +#endif + struct irq_action *act = vecs + irqs; + +#ifdef DEBUG_INT + printf + ("Jumping to interrupt handler rutine addr %x,count %x,arg %x\n", + act->handler, act->count, act->arg); +#endif + act->handler (act->arg); + act->count++; + + intc->iar = mask << irqs; + +#ifdef DEBUG_INT + printf ("Dump INTC reg, isr %x, ier %x, iar %x, mer %x\n", intc->isr, + intc->ier, intc->iar, intc->mer); + R14(value); + printf ("Interrupt handler on %x line, r14 %x\n", irqs, value); +#endif +} + +#if defined(CONFIG_CMD_IRQ) +int do_irqinfo(cmd_tbl_t *cmdtp, int flag, int argc, const char *argv[]) +{ + int i; + struct irq_action *act = vecs; + + if (irq_no) { + puts("\nInterrupt-Information:\n\n" + "Nr Routine Arg Count\n" + "-----------------------------\n"); + + for (i = 0; i < irq_no; i++) { + if (act->handler != (interrupt_handler_t *) def_hdlr) { + printf("%02d %08x %08x %d\n", i, + (int)act->handler, (int)act->arg, + act->count); + } + act++; + } + puts("\n"); + } else { + puts("Undefined interrupt controller\n"); + } + return 0; +} +#endif diff --git a/arch/microblaze/cpu/irq.S b/arch/microblaze/cpu/irq.S new file mode 100644 index 0000000..8c76a73 --- /dev/null +++ b/arch/microblaze/cpu/irq.S @@ -0,0 +1,97 @@ +/* + * (C) Copyright 2007 Michal Simek + * + * Michal SIMEK <monstr@monstr.eu> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <config.h> +#include <asm/asm.h> + .text + .global _interrupt_handler +_interrupt_handler: + swi r2, r1, -4 + swi r3, r1, -8 + swi r4, r1, -12 + swi r5, r1, -16 + swi r6, r1, -20 + swi r7, r1, -24 + swi r8, r1, -28 + swi r9, r1, -32 + swi r10, r1, -36 + swi r11, r1, -40 + swi r12, r1, -44 + swi r13, r1, -48 + swi r14, r1, -52 + swi r15, r1, -56 + swi r16, r1, -60 + swi r17, r1, -64 + swi r18, r1, -68 + swi r19, r1, -72 + swi r20, r1, -76 + swi r21, r1, -80 + swi r22, r1, -84 + swi r23, r1, -88 + swi r24, r1, -92 + swi r25, r1, -96 + swi r26, r1, -100 + swi r27, r1, -104 + swi r28, r1, -108 + swi r29, r1, -112 + swi r30, r1, -116 + swi r31, r1, -120 + addik r1, r1, -124 + brlid r15, interrupt_handler + nop + addik r1, r1, 124 + lwi r31, r1, -120 + lwi r30, r1, -116 + lwi r29, r1, -112 + lwi r28, r1, -108 + lwi r27, r1, -104 + lwi r26, r1, -100 + lwi r25, r1, -96 + lwi r24, r1, -92 + lwi r23, r1, -88 + lwi r22, r1, -84 + lwi r21, r1, -80 + lwi r20, r1, -76 + lwi r19, r1, -72 + lwi r18, r1, -68 + lwi r17, r1, -64 + lwi r16, r1, -60 + lwi r15, r1, -56 + lwi r14, r1, -52 + lwi r13, r1, -48 + lwi r12, r1, -44 + lwi r11, r1, -40 + lwi r10, r1, -36 + lwi r9, r1, -32 + lwi r8, r1, -28 + lwi r7, r1, -24 + lwi r6, r1, -20 + lwi r5, r1, -16 + lwi r4, r1, -12 + lwi r3, r1, -8 + lwi r2, r1, -4 + + rtid r14, 0 + nop + .size _interrupt_handler,.-_interrupt_handler diff --git a/arch/microblaze/cpu/start.S b/arch/microblaze/cpu/start.S new file mode 100644 index 0000000..3da711d --- /dev/null +++ b/arch/microblaze/cpu/start.S @@ -0,0 +1,192 @@ +/* + * (C) Copyright 2007 Michal Simek + * (C) Copyright 2004 Atmark Techno, Inc. + * + * Michal SIMEK <monstr@monstr.eu> + * Yasushi SHOJI <yashi@atmark-techno.com> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <asm-offsets.h> +#include <config.h> + + .text + .global _start +_start: + /* + * reserve registers: + * r10: Stores little/big endian offset for vectors + * r2: Stores imm opcode + * r3: Stores brai opcode + */ + + mts rmsr, r0 /* disable cache */ + addi r1, r0, CONFIG_SYS_INIT_SP_OFFSET + addi r1, r1, -4 /* Decrement SP to top of memory */ + + /* Find-out if u-boot is running on BIG/LITTLE endian platform + * There are some steps which is necessary to keep in mind: + * 1. Setup offset value to r6 + * 2. Store word offset value to address 0x0 + * 3. Load just byte from address 0x0 + * 4a) LITTLE endian - r10 contains 0x2 because it is the smallest + * value that's why is on address 0x0 + * 4b) BIG endian - r10 contains 0x0 because 0x2 offset is on addr 0x3 + */ + addik r6, r0, 0x2 /* BIG/LITTLE endian offset */ + lwi r7, r0, 0x28 + swi r6, r0, 0x28 /* used first unused MB vector */ + lbui r10, r0, 0x28 /* used first unused MB vector */ + swi r7, r0, 0x28 + + /* add opcode instruction for 32bit jump - 2 instruction imm & brai */ + addi r2, r0, 0xb0000000 /* hex b000 opcode imm */ + addi r3, r0, 0xb8080000 /* hew b808 opcode brai */ + +#ifdef CONFIG_SYS_RESET_ADDRESS + /* reset address */ + swi r2, r0, 0x0 /* reset address - imm opcode */ + swi r3, r0, 0x4 /* reset address - brai opcode */ + + addik r6, r0, CONFIG_SYS_RESET_ADDRESS + sw r6, r1, r0 + lhu r7, r1, r10 + rsubi r8, r10, 0x2 + sh r7, r0, r8 + rsubi r8, r10, 0x6 + sh r6, r0, r8 +#endif + +#ifdef CONFIG_SYS_USR_EXCEP + /* user_vector_exception */ + swi r2, r0, 0x8 /* user vector exception - imm opcode */ + swi r3, r0, 0xC /* user vector exception - brai opcode */ + + addik r6, r0, _exception_handler + sw r6, r1, r0 + /* + * BIG ENDIAN memory map for user exception + * 0x8: 0xB000XXXX + * 0xC: 0xB808XXXX + * + * then it is necessary to count address for storing the most significant + * 16bits from _exception_handler address and copy it to + * 0xa address. Big endian use offset in r10=0 that's why is it just + * 0xa address. The same is done for the least significant 16 bits + * for 0xe address. + * + * LITTLE ENDIAN memory map for user exception + * 0x8: 0xXXXX00B0 + * 0xC: 0xXXXX08B8 + * + * Offset is for little endian setup to 0x2. rsubi instruction decrease + * address value to ensure that points to proper place which is + * 0x8 for the most significant 16 bits and + * 0xC for the least significant 16 bits + */ + lhu r7, r1, r10 + rsubi r8, r10, 0xa + sh r7, r0, r8 + rsubi r8, r10, 0xe + sh r6, r0, r8 +#endif + + /* interrupt_handler */ + swi r2, r0, 0x10 /* interrupt - imm opcode */ + swi r3, r0, 0x14 /* interrupt - brai opcode */ + + addik r6, r0, _interrupt_handler + sw r6, r1, r0 + lhu r7, r1, r10 + rsubi r8, r10, 0x12 + sh r7, r0, r8 + rsubi r8, r10, 0x16 + sh r6, r0, r8 + + /* hardware exception */ + swi r2, r0, 0x20 /* hardware exception - imm opcode */ + swi r3, r0, 0x24 /* hardware exception - brai opcode */ + + addik r6, r0, _hw_exception_handler + sw r6, r1, r0 + lhu r7, r1, r10 + rsubi r8, r10, 0x22 + sh r7, r0, r8 + rsubi r8, r10, 0x26 + sh r6, r0, r8 + + /* Flush cache before enable cache */ + addik r5, r0, 0 + addik r6, r0, XILINX_DCACHE_BYTE_SIZE +flush: bralid r15, flush_cache + nop + + /* enable instruction and data cache */ + mfs r12, rmsr + ori r12, r12, 0xa0 + mts rmsr, r12 + +clear_bss: + /* clear BSS segments */ + addi r5, r0, __bss_start + addi r4, r0, __bss_end + cmp r6, r5, r4 + beqi r6, 3f +2: + swi r0, r5, 0 /* write zero to loc */ + addi r5, r5, 4 /* increment to next loc */ + cmp r6, r5, r4 /* check if we have reach the end */ + bnei r6, 2b +3: /* jumping to board_init */ + brai board_init_f +1: bri 1b + +/* + * Read 16bit little endian + */ + .text + .global in16 + .ent in16 + .align 2 +in16: lhu r3, r0, r5 + bslli r4, r3, 8 + bsrli r3, r3, 8 + andi r4, r4, 0xffff + or r3, r3, r4 + rtsd r15, 8 + sext16 r3, r3 + .end in16 + +/* + * Write 16bit little endian + * first parameter(r5) - address, second(r6) - short value + */ + .text + .global out16 + .ent out16 + .align 2 +out16: bslli r3, r6, 8 + bsrli r6, r6, 8 + andi r3, r3, 0xffff + or r3, r3, r6 + sh r3, r0, r5 + rtsd r15, 8 + or r0, r0, r0 + .end out16 diff --git a/arch/microblaze/cpu/timer.c b/arch/microblaze/cpu/timer.c new file mode 100644 index 0000000..1330401 --- /dev/null +++ b/arch/microblaze/cpu/timer.c @@ -0,0 +1,102 @@ +/* + * (C) Copyright 2007 Michal Simek + * + * Michal SIMEK <monstr@monstr.eu> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <asm/microblaze_timer.h> +#include <asm/microblaze_intc.h> + +volatile int timestamp = 0; +microblaze_timer_t *tmr; + +ulong get_timer (ulong base) +{ + if (tmr) + return timestamp - base; + return timestamp++ - base; +} + +void __udelay(unsigned long usec) +{ + u32 i; + + if (tmr) { + i = get_timer(0); + while ((get_timer(0) - i) < (usec / 1000)) + ; + } else { + for (i = 0; i < (usec * XILINX_CLOCK_FREQ / 10000000); i++) + ; + } +} + +static void timer_isr(void *arg) +{ + timestamp++; + tmr->control = tmr->control | TIMER_INTERRUPT; +} + +int timer_init (void) +{ + int irq = -1; + u32 preload = 0; + u32 ret = 0; + +#if defined(CONFIG_SYS_TIMER_0_ADDR) && defined(CONFIG_SYS_INTC_0_NUM) + preload = XILINX_CLOCK_FREQ / CONFIG_SYS_HZ; + irq = CONFIG_SYS_TIMER_0_IRQ; + tmr = (microblaze_timer_t *) (CONFIG_SYS_TIMER_0_ADDR); +#endif + + if (tmr && preload && irq >= 0) { + tmr->loadreg = preload; + tmr->control = TIMER_INTERRUPT | TIMER_RESET; + tmr->control = TIMER_ENABLE | TIMER_ENABLE_INTR |\ + TIMER_RELOAD | TIMER_DOWN_COUNT; + timestamp = 0; + ret = install_interrupt_handler (irq, timer_isr, (void *)tmr); + if (ret) + tmr = NULL; + } + + /* No problem if timer is not found/initialized */ + return 0; +} + +/* + * This function is derived from PowerPC code (read timebase as long long). + * On Microblaze it just returns the timer value. + */ +unsigned long long get_ticks(void) +{ + return get_timer(0); +} + +/* + * This function is derived from PowerPC code (timebase clock frequency). + * On Microblaze it returns the number of timer ticks per second. + */ +ulong get_tbclk(void) +{ + return CONFIG_SYS_HZ; +} diff --git a/arch/microblaze/cpu/u-boot.lds b/arch/microblaze/cpu/u-boot.lds new file mode 100644 index 0000000..1ae4184 --- /dev/null +++ b/arch/microblaze/cpu/u-boot.lds @@ -0,0 +1,71 @@ +/* + * (C) Copyright 2004 Atmark Techno, Inc. + * + * Yasushi SHOJI <yashi@atmark-techno.com> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +OUTPUT_ARCH(microblaze) +ENTRY(_start) + +SECTIONS +{ + .text ALIGN(0x4): + { + __text_start = .; + arch/microblaze/cpu/start.o (.text) + *(.text) + __text_end = .; + } + + .rodata ALIGN(0x4): + { + __rodata_start = .; + *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) + __rodata_end = .; + } + + .data ALIGN(0x4): + { + __data_start = .; +#ifdef CONFIG_OF_EMBED + dts/libdts.o (.data) +#endif + *(.data) + __data_end = .; + } + + . = ALIGN(4); + .u_boot_list : { + KEEP(*(SORT(.u_boot_list*))); + } + + .bss ALIGN(0x4): + { + __bss_start = .; + *(.sbss) + *(.scommon) + *(.bss) + *(COMMON) + . = ALIGN(4); + __bss_end = .; + } + __end = . ; +} diff --git a/arch/microblaze/include/asm/asm.h b/arch/microblaze/include/asm/asm.h new file mode 100644 index 0000000..c89e904 --- /dev/null +++ b/arch/microblaze/include/asm/asm.h @@ -0,0 +1,98 @@ +/* + * (C) Copyright 2007 Michal Simek + * + * Michal SIMEK <monstr@monstr.eu> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +/* FSL macros */ +#define NGET(val, fslnum) \ + __asm__ __volatile__ ("nget %0, rfsl" #fslnum :"=r" (val)); + +#define GET(val, fslnum) \ + __asm__ __volatile__ ("get %0, rfsl" #fslnum :"=r" (val)); + +#define NCGET(val, fslnum) \ + __asm__ __volatile__ ("ncget %0, rfsl" #fslnum :"=r" (val)); + +#define CGET(val, fslnum) \ + __asm__ __volatile__ ("cget %0, rfsl" #fslnum :"=r" (val)); + +#define NPUT(val, fslnum) \ + __asm__ __volatile__ ("nput %0, rfsl" #fslnum ::"r" (val)); + +#define PUT(val, fslnum) \ + __asm__ __volatile__ ("put %0, rfsl" #fslnum ::"r" (val)); + +#define NCPUT(val, fslnum) \ + __asm__ __volatile__ ("ncput %0, rfsl" #fslnum ::"r" (val)); + +#define CPUT(val, fslnum) \ + __asm__ __volatile__ ("cput %0, rfsl" #fslnum ::"r" (val)); + +/* CPU dependent */ +/* machine status register */ +#define MFS(val, reg) \ + __asm__ __volatile__ ("mfs %0," #reg :"=r" (val)); + +#define MTS(val, reg) \ + __asm__ __volatile__ ("mts " #reg ", %0"::"r" (val)); + +/* get return address from interrupt */ +#define R14(val) \ + __asm__ __volatile__ ("addi %0, r14, 0":"=r" (val)); + +#define NOP __asm__ __volatile__ ("nop"); + +/* use machine status registe USE_MSR_REG */ +#if XILINX_USE_MSR_INSTR == 1 +#define MSRSET(val) \ + __asm__ __volatile__ ("msrset r0," #val ); + +#define MSRCLR(val) \ + __asm__ __volatile__ ("msrclr r0," #val ); + +#else +#define MSRSET(val) \ +{ \ + register unsigned tmp; \ + __asm__ __volatile__ (" \ + mfs %0, rmsr; \ + ori %0, %0, "#val"; \ + mts rmsr, %0; \ + nop;" \ + : "=r" (tmp) \ + : "d" (val) \ + : "memory"); \ +} + +#define MSRCLR(val) \ +{ \ + register unsigned tmp; \ + __asm__ __volatile__ (" \ + mfs %0, rmsr; \ + andi %0, %0, ~"#val"; \ + mts rmsr, %0; \ + nop;" \ + : "=r" (tmp) \ + : "d" (val) \ + : "memory"); \ +} +#endif diff --git a/arch/microblaze/include/asm/bitops.h b/arch/microblaze/include/asm/bitops.h new file mode 100644 index 0000000..eafa2b5 --- /dev/null +++ b/arch/microblaze/include/asm/bitops.h @@ -0,0 +1,393 @@ +#ifndef _MICROBLAZE_BITOPS_H +#define _MICROBLAZE_BITOPS_H + +/* + * Copyright 1992, Linus Torvalds. + */ + +#include <linux/config.h> +#include <asm/byteorder.h> /* swab32 */ +#include <asm/system.h> /* save_flags */ + +#ifdef __KERNEL__ +/* + * Function prototypes to keep gcc -Wall happy + */ + +/* + * The __ functions are not atomic + */ + +extern void set_bit(int nr, volatile void * addr); +extern void __set_bit(int nr, volatile void * addr); + +extern void clear_bit(int nr, volatile void * addr); +#define __clear_bit(nr, addr) clear_bit(nr, addr) +#define PLATFORM__CLEAR_BIT + +extern void change_bit(int nr, volatile void * addr); +extern void __change_bit(int nr, volatile void * addr); +extern int test_and_set_bit(int nr, volatile void * addr); +extern int __test_and_set_bit(int nr, volatile void * addr); +extern int test_and_clear_bit(int nr, volatile void * addr); +extern int __test_and_clear_bit(int nr, volatile void * addr); +extern int test_and_change_bit(int nr, volatile void * addr); +extern int __test_and_change_bit(int nr, volatile void * addr); +extern int __constant_test_bit(int nr, const volatile void * addr); +extern int __test_bit(int nr, volatile void * addr); +extern int find_first_zero_bit(void * addr, unsigned size); +extern int find_next_zero_bit (void * addr, int size, int offset); + +/* + * ffz = Find First Zero in word. Undefined if no zero exists, + * so code should check against ~0UL first.. + */ +extern __inline__ unsigned long ffz(unsigned long word) +{ + unsigned long result = 0; + + while(word & 1) { + result++; + word >>= 1; + } + return result; +} + + +extern __inline__ void set_bit(int nr, volatile void * addr) +{ + int * a = (int *) addr; + int mask; + unsigned long flags; + + a += nr >> 5; + mask = 1 << (nr & 0x1f); + save_flags_cli(flags); + *a |= mask; + restore_flags(flags); +} + +extern __inline__ void __set_bit(int nr, volatile void * addr) +{ + int * a = (int *) addr; + int mask; + + a += nr >> 5; + mask = 1 << (nr & 0x1f); + *a |= mask; +} +#define PLATFORM__SET_BIT + +/* + * clear_bit() doesn't provide any barrier for the compiler. + */ +#define smp_mb__before_clear_bit() barrier() +#define smp_mb__after_clear_bit() barrier() + +extern __inline__ void clear_bit(int nr, volatile void * addr) +{ + int * a = (int *) addr; + int mask; + unsigned long flags; + + a += nr >> 5; + mask = 1 << (nr & 0x1f); + save_flags_cli(flags); + *a &= ~mask; + restore_flags(flags); +} + +extern __inline__ void change_bit(int nr, volatile void * addr) +{ + int mask; + unsigned long flags; + unsigned long *ADDR = (unsigned long *) addr; + + ADDR += nr >> 5; + mask = 1 << (nr & 31); + save_flags_cli(flags); + *ADDR ^= mask; + restore_flags(flags); +} + +extern __inline__ void __change_bit(int nr, volatile void * addr) +{ + int mask; + unsigned long *ADDR = (unsigned long *) addr; + + ADDR += nr >> 5; + mask = 1 << (nr & 31); + *ADDR ^= mask; +} + +extern __inline__ int test_and_set_bit(int nr, volatile void * addr) +{ + int mask, retval; + volatile unsigned int *a = (volatile unsigned int *) addr; + unsigned long flags; + + a += nr >> 5; + mask = 1 << (nr & 0x1f); + save_flags_cli(flags); + retval = (mask & *a) != 0; + *a |= mask; + restore_flags(flags); + + return retval; +} + +extern __inline__ int __test_and_set_bit(int nr, volatile void * addr) +{ + int mask, retval; + volatile unsigned int *a = (volatile unsigned int *) addr; + + a += nr >> 5; + mask = 1 << (nr & 0x1f); + retval = (mask & *a) != 0; + *a |= mask; + return retval; +} + +extern __inline__ int test_and_clear_bit(int nr, volatile void * addr) +{ + int mask, retval; + volatile unsigned int *a = (volatile unsigned int *) addr; + unsigned long flags; + + a += nr >> 5; + mask = 1 << (nr & 0x1f); + save_flags_cli(flags); + retval = (mask & *a) != 0; + *a &= ~mask; + restore_flags(flags); + + return retval; +} + +extern __inline__ int __test_and_clear_bit(int nr, volatile void * addr) +{ + int mask, retval; + volatile unsigned int *a = (volatile unsigned int *) addr; + + a += nr >> 5; + mask = 1 << (nr & 0x1f); + retval = (mask & *a) != 0; + *a &= ~mask; + return retval; +} + +extern __inline__ int test_and_change_bit(int nr, volatile void * addr) +{ + int mask, retval; + volatile unsigned int *a = (volatile unsigned int *) addr; + unsigned long flags; + + a += nr >> 5; + mask = 1 << (nr & 0x1f); + save_flags_cli(flags); + retval = (mask & *a) != 0; + *a ^= mask; + restore_flags(flags); + + return retval; +} + +extern __inline__ int __test_and_change_bit(int nr, volatile void * addr) +{ + int mask, retval; + volatile unsigned int *a = (volatile unsigned int *) addr; + + a += nr >> 5; + mask = 1 << (nr & 0x1f); + retval = (mask & *a) != 0; + *a ^= mask; + return retval; +} + +/* + * This routine doesn't need to be atomic. + */ +extern __inline__ int __constant_test_bit(int nr, const volatile void * addr) +{ + return ((1UL << (nr & 31)) & (((const volatile unsigned int *) addr)[nr >> 5])) != 0; +} + +extern __inline__ int __test_bit(int nr, volatile void * addr) +{ + int * a = (int *) addr; + int mask; + + a += nr >> 5; + mask = 1 << (nr & 0x1f); + return ((mask & *a) != 0); +} + +#define test_bit(nr,addr) \ +(__builtin_constant_p(nr) ? \ + __constant_test_bit((nr),(addr)) : \ + __test_bit((nr),(addr))) + +#define find_first_zero_bit(addr, size) \ + find_next_zero_bit((addr), (size), 0) + +extern __inline__ int find_next_zero_bit (void * addr, int size, int offset) +{ + unsigned long *p = ((unsigned long *) addr) + (offset >> 5); + unsigned long result = offset & ~31UL; + unsigned long tmp; + + if (offset >= size) + return size; + size -= result; + offset &= 31UL; + if (offset) { + tmp = *(p++); + tmp |= ~0UL >> (32-offset); + if (size < 32) + goto found_first; + if (~tmp) + goto found_middle; + size -= 32; + result += 32; + } + while (size & ~31UL) { + if (~(tmp = *(p++))) + goto found_middle; + result += 32; + size -= 32; + } + if (!size) + return result; + tmp = *p; + +found_first: + tmp |= ~0UL >> size; +found_middle: + return result + ffz(tmp); +} + +/* + * hweightN: returns the hamming weight (i.e. the number + * of bits set) of a N-bit word + */ + +#define hweight32(x) generic_hweight32(x) +#define hweight16(x) generic_hweight16(x) +#define hweight8(x) generic_hweight8(x) + + +extern __inline__ int ext2_set_bit(int nr, volatile void * addr) +{ + int mask, retval; + unsigned long flags; + volatile unsigned char *ADDR = (unsigned char *) addr; + + ADDR += nr >> 3; + mask = 1 << (nr & 0x07); + save_flags_cli(flags); + retval = (mask & *ADDR) != 0; + *ADDR |= mask; + restore_flags(flags); + return retval; +} + +extern __inline__ int ext2_clear_bit(int nr, volatile void * addr) +{ + int mask, retval; + unsigned long flags; + volatile unsigned char *ADDR = (unsigned char *) addr; + + ADDR += nr >> 3; + mask = 1 << (nr & 0x07); + save_flags_cli(flags); + retval = (mask & *ADDR) != 0; + *ADDR &= ~mask; + restore_flags(flags); + return retval; +} + +extern __inline__ int ext2_test_bit(int nr, const volatile void * addr) +{ + int mask; + const volatile unsigned char *ADDR = (const unsigned char *) addr; + + ADDR += nr >> 3; + mask = 1 << (nr & 0x07); + return ((mask & *ADDR) != 0); +} + +#define ext2_find_first_zero_bit(addr, size) \ + ext2_find_next_zero_bit((addr), (size), 0) + +static inline unsigned long ext2_find_next_zero_bit(void *addr, + unsigned long size, unsigned long offset) +{ + unsigned long *p = ((unsigned long *) addr) + (offset >> 5); + unsigned long result = offset & ~31UL; + unsigned long tmp; + + if (offset >= size) + return size; + size -= result; + offset &= 31UL; + if(offset) { + /* We hold the little endian value in tmp, but then the + * shift is illegal. So we could keep a big endian value + * in tmp, like this: + * + * tmp = __swab32(*(p++)); + * tmp |= ~0UL >> (32-offset); + * + * but this would decrease preformance, so we change the + * shift: + */ + tmp = *(p++); + tmp |= __swab32(~0UL >> (32-offset)); + if(size < 32) + goto found_first; + if(~tmp) + goto found_middle; + size -= 32; + result += 32; + } + while(size & ~31UL) { + if(~(tmp = *(p++))) + goto found_middle; + result += 32; + size -= 32; + } + if(!size) + return result; + tmp = *p; + +found_first: + /* tmp is little endian, so we would have to swab the shift, + * see above. But then we have to swab tmp below for ffz, so + * we might as well do this here. + */ + return result + ffz(__swab32(tmp) | (~0UL << size)); +found_middle: + return result + ffz(__swab32(tmp)); +} + +/* Bitmap functions for the minix filesystem. */ +#define minix_test_and_set_bit(nr,addr) test_and_set_bit(nr,addr) +#define minix_set_bit(nr,addr) set_bit(nr,addr) +#define minix_test_and_clear_bit(nr,addr) test_and_clear_bit(nr,addr) +#define minix_test_bit(nr,addr) test_bit(nr,addr) +#define minix_find_first_zero_bit(addr,size) find_first_zero_bit(addr,size) + +/** + * hweightN - returns the hamming weight of a N-bit word + * @x: the word to weigh + * + * The Hamming Weight of a number is the total number of bits set in it. + */ + +#define hweight32(x) generic_hweight32(x) +#define hweight16(x) generic_hweight16(x) +#define hweight8(x) generic_hweight8(x) + +#endif /* __KERNEL__ */ + +#endif /* _MICROBLAZE_BITOPS_H */ diff --git a/arch/microblaze/include/asm/byteorder.h b/arch/microblaze/include/asm/byteorder.h new file mode 100644 index 0000000..f3a471d --- /dev/null +++ b/arch/microblaze/include/asm/byteorder.h @@ -0,0 +1,36 @@ +/* + * include/asm-microblaze/byteorder.h -- Endian id and conversion ops + * + * Copyright (C) 2003 John Williams <jwilliams@itee.uq.edu.au> + * Copyright (C) 2001 NEC Corporation + * Copyright (C) 2001 Miles Bader <miles@gnu.org> + * + * This file is subject to the terms and conditions of the GNU General + * Public License. See the file COPYING in the main directory of this + * archive for more details. + * + * Written by Miles Bader <miles@gnu.org> + * Microblaze port by John Williams + */ + +#ifndef __MICROBLAZE_BYTEORDER_H__ +#define __MICROBLAZE_BYTEORDER_H__ + +#include <asm/types.h> + +#ifdef __GNUC__ + +#if !defined(__STRICT_ANSI__) || defined(__KERNEL__) +# define __BYTEORDER_HAS_U64__ +# define __SWAB_64_THRU_32__ +#endif + +#endif /* __GNUC__ */ + +#ifdef __MICROBLAZEEL__ +#include <linux/byteorder/little_endian.h> +#else +#include <linux/byteorder/big_endian.h> +#endif + +#endif /* __MICROBLAZE_BYTEORDER_H__ */ diff --git a/arch/microblaze/include/asm/cache.h b/arch/microblaze/include/asm/cache.h new file mode 100644 index 0000000..0373e88 --- /dev/null +++ b/arch/microblaze/include/asm/cache.h @@ -0,0 +1,37 @@ +/* + * Copyright (c) 2011 The Chromium OS Authors. + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#ifndef __MICROBLAZE_CACHE_H__ +#define __MICROBLAZE_CACHE_H__ + +/* + * The microblaze can have either a 4 or 16 byte cacheline depending on whether + * you are using OPB(4) or CacheLink(16). If the board config has not specified + * a cacheline size we assume the larger value of 16 bytes for DMA buffer + * alignment. + */ +#ifdef CONFIG_SYS_CACHELINE_SIZE +#define ARCH_DMA_MINALIGN CONFIG_SYS_CACHELINE_SIZE +#else +#define ARCH_DMA_MINALIGN 16 +#endif + +#endif /* __MICROBLAZE_CACHE_H__ */ diff --git a/arch/microblaze/include/asm/config.h b/arch/microblaze/include/asm/config.h new file mode 100644 index 0000000..049c44e --- /dev/null +++ b/arch/microblaze/include/asm/config.h @@ -0,0 +1,24 @@ +/* + * Copyright 2009 Freescale Semiconductor, Inc. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + */ + +#ifndef _ASM_CONFIG_H_ +#define _ASM_CONFIG_H_ + +#endif diff --git a/arch/microblaze/include/asm/errno.h b/arch/microblaze/include/asm/errno.h new file mode 100644 index 0000000..4c82b50 --- /dev/null +++ b/arch/microblaze/include/asm/errno.h @@ -0,0 +1 @@ +#include <asm-generic/errno.h> diff --git a/arch/microblaze/include/asm/global_data.h b/arch/microblaze/include/asm/global_data.h new file mode 100644 index 0000000..89dcef7 --- /dev/null +++ b/arch/microblaze/include/asm/global_data.h @@ -0,0 +1,36 @@ +/* + * (C) Copyright 2004 Atmark Techno, Inc. + * + * Yasushi SHOJI <yashi@atmark-techno.com> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#ifndef __ASM_GBL_DATA_H +#define __ASM_GBL_DATA_H + +/* Architecture-specific global data */ +struct arch_global_data { +}; + +#include <asm-generic/global_data.h> + +#define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("r31") + +#endif /* __ASM_GBL_DATA_H */ diff --git a/arch/microblaze/include/asm/gpio.h b/arch/microblaze/include/asm/gpio.h new file mode 100644 index 0000000..f5cad56 --- /dev/null +++ b/arch/microblaze/include/asm/gpio.h @@ -0,0 +1,15 @@ +#ifndef _ASM_MICROBLAZE_GPIO_H_ +#define _ASM_MICROBLAZE_GPIO_H_ + +#include <asm-generic/gpio.h> + +/* Allocation functions */ +extern int gpio_alloc_dual(u32 baseaddr, const char *name, u32 gpio_no0, + u32 gpio_no1); +extern int gpio_alloc(u32 baseaddr, const char *name, u32 gpio_no); + +#define gpio_status() gpio_info() +extern void gpio_info(void); + +#endif + diff --git a/arch/microblaze/include/asm/io.h b/arch/microblaze/include/asm/io.h new file mode 100644 index 0000000..584cbce --- /dev/null +++ b/arch/microblaze/include/asm/io.h @@ -0,0 +1,163 @@ +/* + * include/asm-microblaze/io.h -- Misc I/O operations + * + * Copyright (C) 2003 John Williams <jwilliams@itee.uq.edu.au> + * Copyright (C) 2001,02 NEC Corporation + * Copyright (C) 2001,02 Miles Bader <miles@gnu.org> + * + * This file is subject to the terms and conditions of the GNU General + * Public License. See the file COPYING in the main directory of this + * archive for more details. + * + * Written by Miles Bader <miles@gnu.org> + * Microblaze port by John Williams + */ + +#ifndef __MICROBLAZE_IO_H__ +#define __MICROBLAZE_IO_H__ + +#include <asm/types.h> + +#define IO_SPACE_LIMIT 0xFFFFFFFF + +#define readb(addr) \ + ({ unsigned char __v = (*(volatile unsigned char *) (addr)); __v; }) +#define readw(addr) \ + ({ unsigned short __v = (*(volatile unsigned short *) (addr)); __v; }) +#define readl(addr) \ + ({ unsigned int __v = (*(volatile unsigned int *) (addr)); __v; }) + +#define writeb(b, addr) \ + (void)((*(volatile unsigned char *) (addr)) = (b)) +#define writew(b, addr) \ + (void)((*(volatile unsigned short *) (addr)) = (b)) +#define writel(b, addr) \ + (void)((*(volatile unsigned int *) (addr)) = (b)) + +#define memset_io(a,b,c) memset((void *)(a),(b),(c)) +#define memcpy_fromio(a,b,c) memcpy((a),(void *)(b),(c)) +#define memcpy_toio(a,b,c) memcpy((void *)(a),(b),(c)) + +#define inb(addr) readb (addr) +#define inw(addr) readw (addr) +#define inl(addr) readl (addr) +#define outb(x, addr) ((void) writeb (x, addr)) +#define outw(x, addr) ((void) writew (x, addr)) +#define outl(x, addr) ((void) writel (x, addr)) + +/* Some #definitions to keep strange Xilinx code happy */ +#define in_8(addr) readb (addr) +#define in_be16(addr) readw (addr) +#define in_be32(addr) readl (addr) + +#define out_8(addr,x ) outb (x,addr) +#define out_be16(addr,x ) outw (x,addr) +#define out_be32(addr,x ) outl (x,addr) + + +#define inb_p(port) inb((port)) +#define outb_p(val, port) outb((val), (port)) +#define inw_p(port) inw((port)) +#define outw_p(val, port) outw((val), (port)) +#define inl_p(port) inl((port)) +#define outl_p(val, port) outl((val), (port)) + +/* Some defines to keep the MTD flash drivers happy */ + +#define __raw_readb readb +#define __raw_readw readw +#define __raw_readl readl +#define __raw_writeb writeb +#define __raw_writew writew +#define __raw_writel writel + +static inline void io_insb (unsigned long port, void *dst, unsigned long count) +{ + unsigned char *p = dst; + while (count--) + *p++ = inb (port); +} +static inline void io_insw (unsigned long port, void *dst, unsigned long count) +{ + unsigned short *p = dst; + while (count--) + *p++ = inw (port); +} +static inline void io_insl (unsigned long port, void *dst, unsigned long count) +{ + unsigned long *p = dst; + while (count--) + *p++ = inl (port); +} + +static inline void +io_outsb (unsigned long port, const void *src, unsigned long count) +{ + const unsigned char *p = src; + while (count--) + outb (*p++, port); +} +static inline void +io_outsw (unsigned long port, const void *src, unsigned long count) +{ + const unsigned short *p = src; + while (count--) + outw (*p++, port); +} +static inline void +io_outsl (unsigned long port, const void *src, unsigned long count) +{ + const unsigned long *p = src; + while (count--) + outl (*p++, port); +} + +#define outsb(a,b,l) io_outsb(a,b,l) +#define outsw(a,b,l) io_outsw(a,b,l) +#define outsl(a,b,l) io_outsl(a,b,l) + +#define insb(a,b,l) io_insb(a,b,l) +#define insw(a,b,l) io_insw(a,b,l) +#define insl(a,b,l) io_insl(a,b,l) + + +#define iounmap(addr) ((void)0) +#define ioremap(physaddr, size) (physaddr) +#define ioremap_nocache(physaddr, size) (physaddr) +#define ioremap_writethrough(physaddr, size) (physaddr) +#define ioremap_fullcache(physaddr, size) (physaddr) + +static inline void sync(void) +{ +} + +/* + * Given a physical address and a length, return a virtual address + * that can be used to access the memory range with the caching + * properties specified by "flags". + */ +#define MAP_NOCACHE (0) +#define MAP_WRCOMBINE (0) +#define MAP_WRBACK (0) +#define MAP_WRTHROUGH (0) + +static inline void * +map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags) +{ + return (void *)paddr; +} + +/* + * Take down a mapping set up by map_physmem(). + */ +static inline void unmap_physmem(void *vaddr, unsigned long flags) +{ + +} + +static inline phys_addr_t virt_to_phys(void * vaddr) +{ + return (phys_addr_t)(vaddr); +} + +#endif /* __MICROBLAZE_IO_H__ */ diff --git a/arch/microblaze/include/asm/microblaze_intc.h b/arch/microblaze/include/asm/microblaze_intc.h new file mode 100644 index 0000000..e9640f5 --- /dev/null +++ b/arch/microblaze/include/asm/microblaze_intc.h @@ -0,0 +1,55 @@ +/* + * (C) Copyright 2007 Michal Simek + * + * Michal SIMEK <monstr@monstr.cz> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +typedef volatile struct microblaze_intc_t { + int isr; /* interrupt status register */ + int ipr; /* interrupt pending register */ + int ier; /* interrupt enable register */ + int iar; /* interrupt acknowledge register */ + int sie; /* set interrupt enable bits */ + int cie; /* clear interrupt enable bits */ + int ivr; /* interrupt vector register */ + int mer; /* master enable register */ +} microblaze_intc_t; + +struct irq_action { + interrupt_handler_t *handler; /* pointer to interrupt rutine */ + void *arg; + int count; /* number of interrupt */ +}; + +/** + * Register and unregister interrupt handler rutines + * + * @param irq IRQ number + * @param hdlr Interrupt handler rutine + * @param arg Pointer to argument which is passed to int. handler rutine + * @return 0 if registration pass, 1 if unregistration pass, + * or an error code < 0 otherwise + */ +int install_interrupt_handler(int irq, interrupt_handler_t *hdlr, + void *arg); + +int interrupts_init(void); + diff --git a/arch/microblaze/include/asm/microblaze_timer.h b/arch/microblaze/include/asm/microblaze_timer.h new file mode 100644 index 0000000..28e8b02 --- /dev/null +++ b/arch/microblaze/include/asm/microblaze_timer.h @@ -0,0 +1,44 @@ +/* + * (C) Copyright 2007 Michal Simek + * + * Michal SIMEK <monstr@monstr.cz> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#define TIMER_ENABLE_ALL 0x400 /* ENALL */ +#define TIMER_PWM 0x200 /* PWMA0 */ +#define TIMER_INTERRUPT 0x100 /* T0INT */ +#define TIMER_ENABLE 0x080 /* ENT0 */ +#define TIMER_ENABLE_INTR 0x040 /* ENIT0 */ +#define TIMER_RESET 0x020 /* LOAD0 */ +#define TIMER_RELOAD 0x010 /* ARHT0 */ +#define TIMER_EXT_CAPTURE 0x008 /* CAPT0 */ +#define TIMER_EXT_COMPARE 0x004 /* GENT0 */ +#define TIMER_DOWN_COUNT 0x002 /* UDT0 */ +#define TIMER_CAPTURE_MODE 0x001 /* MDT0 */ + +typedef volatile struct microblaze_timer_t { + int control; /* control/statuc register TCSR */ + int loadreg; /* load register TLR */ + int counter; /* timer/counter register */ +} microblaze_timer_t; + +int timer_init(void); + diff --git a/arch/microblaze/include/asm/posix_types.h b/arch/microblaze/include/asm/posix_types.h new file mode 100644 index 0000000..38dc5aa --- /dev/null +++ b/arch/microblaze/include/asm/posix_types.h @@ -0,0 +1,73 @@ +/* + * include/asm-microblaze/posix_types.h -- Kernel versions of standard types + * + * Copyright (C) 2003 John Williams <jwilliams@itee.uq.edu.au> + * Copyright (C) 2001,2002 NEC Corporation + * Copyright (C) 2001,2002 Miles Bader <miles@gnu.org> + * + * This file is subject to the terms and conditions of the GNU General + * Public License. See the file COPYING in the main directory of this + * archive for more details. + * + * Written by Miles Bader <miles@gnu.org> + * Microblaze port by John Williams + */ + +#ifndef __MICROBLAZE_POSIX_TYPES_H__ +#define __MICROBLAZE_POSIX_TYPES_H__ + +typedef unsigned int __kernel_dev_t; +typedef unsigned long __kernel_ino_t; +typedef unsigned long long __kernel_ino64_t; +typedef unsigned int __kernel_mode_t; +typedef unsigned int __kernel_nlink_t; +typedef long __kernel_off_t; +typedef long long __kernel_loff_t; +typedef int __kernel_pid_t; +typedef unsigned short __kernel_ipc_pid_t; +typedef unsigned int __kernel_uid_t; +typedef unsigned int __kernel_gid_t; +typedef unsigned int __kernel_size_t; +typedef int __kernel_ssize_t; +typedef int __kernel_ptrdiff_t; +typedef long __kernel_time_t; +typedef long __kernel_suseconds_t; +typedef long __kernel_clock_t; +typedef int __kernel_daddr_t; +typedef char * __kernel_caddr_t; +typedef unsigned short __kernel_uid16_t; +typedef unsigned short __kernel_gid16_t; +typedef unsigned int __kernel_uid32_t; +typedef unsigned int __kernel_gid32_t; + +typedef unsigned short __kernel_old_uid_t; +typedef unsigned short __kernel_old_gid_t; + + +typedef struct { +#if defined(__KERNEL__) || defined(__USE_ALL) + int val[2]; +#else /* !defined(__KERNEL__) && !defined(__USE_ALL) */ + int __val[2]; +#endif /* !defined(__KERNEL__) && !defined(__USE_ALL) */ +} __kernel_fsid_t; + + +#if defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2) + +#undef __FD_SET +#define __FD_SET(fd, fd_set) \ + __set_bit (fd, (void *)&((__kernel_fd_set *)fd_set)->fds_bits) +#undef __FD_CLR +#define __FD_CLR(fd, fd_set) \ + __clear_bit (fd, (void *)&((__kernel_fd_set *)fd_set)->fds_bits) +#undef __FD_ISSET +#define __FD_ISSET(fd, fd_set) \ + __test_bit (fd, (void *)&((__kernel_fd_set *)fd_set)->fds_bits) +#undef __FD_ZERO +#define __FD_ZERO(fd_set) \ + memset (fd_set, 0, sizeof (*(fd_set *)fd_set)) + +#endif /* defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2) */ + +#endif /* __MICROBLAZE_POSIX_TYPES_H__ */ diff --git a/arch/microblaze/include/asm/processor.h b/arch/microblaze/include/asm/processor.h new file mode 100644 index 0000000..d33faeb --- /dev/null +++ b/arch/microblaze/include/asm/processor.h @@ -0,0 +1,38 @@ +/* + * Copyright (C) 2011 Michal Simek <monstr@monstr.eu> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#ifndef __ASM_MICROBLAZE_PROCESSOR_H +#define __ASM_MICROBLAZE_PROCESSOR_H + +/* References to section boundaries */ + +extern char __end[]; +extern char __text_start[]; + +/* Microblaze board initialization function */ +void board_init(void); + +/* Watchdog functions */ +extern int hw_watchdog_init(void); +extern void hw_watchdog_disable(void); + +#endif /* __ASM_MICROBLAZE_PROCESSOR_H */ diff --git a/arch/microblaze/include/asm/ptrace.h b/arch/microblaze/include/asm/ptrace.h new file mode 100644 index 0000000..b796d4f --- /dev/null +++ b/arch/microblaze/include/asm/ptrace.h @@ -0,0 +1,116 @@ +/* + * include/asm-microblaze/ptrace.h -- Access to CPU registers + * + * Copyright (C) 2003 John Williams <jwilliams@itee.uq.edu.au> + * Copyright (C) 2001,2002 NEC Corporation + * Copyright (C) 2001,2002 Miles Bader <miles@gnu.org> + * + * This file is subject to the terms and conditions of the GNU General + * Public License. See the file COPYING in the main directory of this + * archive for more details. + * + * Written by Miles Bader <miles@gnu.org> + * Microblaze port by John Williams + */ + +#ifndef __MICROBLAZE_PTRACE_H__ +#define __MICROBLAZE_PTRACE_H__ + + +/* Microblaze general purpose registers with special meanings. */ +#define GPR_ZERO 0 /* constant zero */ +#define GPR_ASM 18 /* reserved for assembler */ +#define GPR_SP 1 /* stack pointer */ +#define GPR_GP 2 /* global data pointer */ +#define GPR_EP 30 /* `element pointer' */ +#define GPR_LP 15 /* link pointer (current return address) */ + +/* These aren't official names, but they make some code more descriptive. */ +#define GPR_ARG0 5 +#define GPR_ARG1 6 +#define GPR_ARG2 7 +#define GPR_ARG3 8 +#define GPR_ARG4 9 +#define GPR_ARG5 10 +#define GPR_RVAL0 3 +#define GPR_RVAL1 4 +#define GPR_RVAL GPR_RVAL0 + +#define NUM_GPRS 32 + +/* `system' registers. */ +/* Note these are old v850 values, microblaze has many fewer */ +#define SR_EIPC 0 +#define SR_EIPSW 1 +#define SR_FEPC 2 +#define SR_FEPSW 3 +#define SR_ECR 4 +#define SR_PSW 5 +#define SR_CTPC 16 +#define SR_CTPSW 17 +#define SR_DBPC 18 +#define SR_DBPSW 19 +#define SR_CTBP 20 +#define SR_DIR 21 +#define SR_ASID 23 + + +#ifndef __ASSEMBLY__ + +typedef unsigned long microblaze_reg_t; + +/* How processor state is stored on the stack during a syscall/signal. + If you change this structure, change the associated assembly-language + macros below too (PT_*)! */ +struct pt_regs +{ + /* General purpose registers. */ + microblaze_reg_t gpr[NUM_GPRS]; + + microblaze_reg_t pc; /* program counter */ + microblaze_reg_t psw; /* program status word */ + + microblaze_reg_t kernel_mode; /* 1 if in `kernel mode', 0 if user mode */ + microblaze_reg_t single_step; /* 1 if in single step mode */ +}; + + +#define instruction_pointer(regs) ((regs)->pc) +#define user_mode(regs) (!(regs)->kernel_mode) + +/* When a struct pt_regs is used to save user state for a system call in + the kernel, the system call is stored in the space for R0 (since it's + never used otherwise, R0 being a constant 0). Non-system-calls + simply store 0 there. */ +#define PT_REGS_SYSCALL(regs) (regs)->gpr[0] +#define PT_REGS_SET_SYSCALL(regs, val) ((regs)->gpr[0] = (val)) + +#endif /* !__ASSEMBLY__ */ + + +/* The number of bytes used to store each register. */ +#define _PT_REG_SIZE 4 + +/* Offset of a general purpose register in a stuct pt_regs. */ +#define PT_GPR(num) ((num) * _PT_REG_SIZE) + +/* Offsets of various special registers & fields in a struct pt_regs. */ +#define NUM_SPECIAL 4 +#define PT_PC ((NUM_GPRS + 0) * _PT_REG_SIZE) +#define PT_PSW ((NUM_GPRS + 1) * _PT_REG_SIZE) +#define PT_KERNEL_MODE ((NUM_GPRS + 2) * _PT_REG_SIZE) +#define PT_SINGLESTEP ((NUM_GPRS + 3) * _PT_REG_SIZE) + +#define PT_SYSCALL PT_GPR(0) + +/* Size of struct pt_regs, including alignment. */ +#define PT_SIZE ((NUM_GPRS + NUM_SPECIAL) * _PT_REG_SIZE) + +/* These are `magic' values for PTRACE_PEEKUSR that return info about where + a process is located in memory. */ +#define PT_TEXT_ADDR (PT_SIZE + 1) +#define PT_TEXT_LEN (PT_SIZE + 2) +#define PT_DATA_ADDR (PT_SIZE + 3) +#define PT_DATA_LEN (PT_SIZE + 4) + +#endif /* __MICROBLAZE_PTRACE_H__ */ diff --git a/arch/microblaze/include/asm/sections.h b/arch/microblaze/include/asm/sections.h new file mode 100644 index 0000000..156c149 --- /dev/null +++ b/arch/microblaze/include/asm/sections.h @@ -0,0 +1,27 @@ +/* + * Copyright (c) 2012 The Chromium OS Authors. + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#ifndef __ASM_MICROBLAZE_SECTIONS_H +#define __ASM_MICROBLAZE_SECTIONS_H + +#include <asm-generic/sections.h> + +#endif diff --git a/arch/microblaze/include/asm/string.h b/arch/microblaze/include/asm/string.h new file mode 100644 index 0000000..724f5bd --- /dev/null +++ b/arch/microblaze/include/asm/string.h @@ -0,0 +1,31 @@ +/* + * include/asm-microblaze/string.h -- Architecture specific string routines + * + * Copyright (C) 2003 John Williams <jwilliams@itee.uq.edu.au> + * Copyright (C) 2001,2002 NEC Corporation + * Copyright (C) 2001,2002 Miles Bader <miles@gnu.org> + * + * This file is subject to the terms and conditions of the GNU General + * Public License. See the file COPYING in the main directory of this + * archive for more details. + * + * Written by Miles Bader <miles@gnu.org> + * Microblaze port by John Williams + */ + +#ifndef __MICROBLAZE_STRING_H__ +#define __MICROBLAZE_STRING_H__ + +#if 0 +#define __HAVE_ARCH_BCOPY +#define __HAVE_ARCH_MEMCPY +#define __HAVE_ARCH_MEMSET +#define __HAVE_ARCH_MEMMOVE + +extern void *memcpy (void *, const void *, __kernel_size_t); +extern void bcopy (const char *, char *, int); +extern void *memset (void *, int, __kernel_size_t); +extern void *memmove (void *, const void *, __kernel_size_t); +#endif + +#endif /* __MICROBLAZE_STRING_H__ */ diff --git a/arch/microblaze/include/asm/system.h b/arch/microblaze/include/asm/system.h new file mode 100644 index 0000000..0297a11 --- /dev/null +++ b/arch/microblaze/include/asm/system.h @@ -0,0 +1,161 @@ +/* + * include/asm-microblaze/system.h -- Low-level interrupt/thread ops + * + * Copyright (C) 2003 John Williams (jwilliams@itee.uq.edu.au) + * based upon microblaze version + * Copyright (C) 2001 NEC Corporation + * Copyright (C) 2001 Miles Bader <miles@gnu.org> + * + * This file is subject to the terms and conditions of the GNU General + * Public License. See the file COPYING in the main directory of this + * archive for more details. + * + * Written by Miles Bader <miles@gnu.org> + * Microblaze port by John Williams + * Microblaze port by John Williams + */ + +#ifndef __MICROBLAZE_SYSTEM_H__ +#define __MICROBLAZE_SYSTEM_H__ + +#if 0 +#include <linux/linkage.h> +#endif +#include <asm/ptrace.h> + +#define prepare_to_switch() do { } while (0) + +/* + * switch_to(n) should switch tasks to task ptr, first checking that + * ptr isn't the current task, in which case it does nothing. + */ +struct thread_struct; +extern void *switch_thread (struct thread_struct *last, + struct thread_struct *next); +#define switch_to(prev,next,last) do { \ + if (prev != next) { \ + (last) = switch_thread (&prev->thread, &next->thread); \ + } \ +} while (0) + + +/* Enable/disable interrupts. */ +#define __sti() \ +{ \ + register unsigned tmp; \ + __asm__ __volatile__ (" \ + mfs %0, rmsr; \ + ori %0, %0, 2; \ + mts rmsr, %0" \ + : "=r" (tmp) \ + : \ + : "memory"); \ +} + +#define __cli() \ +{ \ + register unsigned tmp; \ + __asm__ __volatile__ (" \ + mfs %0, rmsr; \ + andi %0, %0, ~2; \ + mts rmsr, %0" \ + : "=r" (tmp) \ + : \ + : "memory"); \ +} + +#define __save_flags(flags) \ + __asm__ __volatile__ ("mfs %0, rmsr" : "=r" (flags)) +#define __restore_flags(flags) \ + __asm__ __volatile__ ("mts rmsr, %0" :: "r" (flags)) + +#define __save_flags_cli(flags) \ +{ \ + register unsigned tmp; \ + __asm__ __volatile__ (" \ + mfs %0, rmsr; \ + andi %1, %0, ~2; \ + mts rmsr, %1;" \ + : "=r" (flags), "=r" (tmp) \ + : \ + : "memory"); \ +} + +#define __save_flags_sti(flags) \ +{ \ + register unsigned tmp; \ + __asm__ __volatile__ (" \ + mfs %0, rmsr; \ + ori %1, %0, 2; \ + mts rmsr, %1;" \ + : "=r" (flags) ,"=r" (tmp) \ + : \ + : "memory"); \ +} + +/* For spinlocks etc */ +#define local_irq_save(flags) __save_flags_cli (flags) +#define local_irq_set(flags) __save_flags_sti (flags) +#define local_irq_restore(flags) __restore_flags (flags) +#define local_irq_disable() __cli () +#define local_irq_enable() __sti () + +#define cli() __cli () +#define sti() __sti () +#define save_flags(flags) __save_flags (flags) +#define restore_flags(flags) __restore_flags (flags) +#define save_flags_cli(flags) __save_flags_cli (flags) + +/* + * Force strict CPU ordering. + * Not really required on microblaze... + */ +#define nop() __asm__ __volatile__ ("nop") +#define mb() __asm__ __volatile__ ("nop" ::: "memory") +#define rmb() mb () +#define wmb() mb () +#define set_mb(var, value) do { var = value; mb(); } while (0) +#define set_wmb(var, value) do { var = value; wmb (); } while (0) + +#ifdef CONFIG_SMP +#define smp_mb() mb () +#define smp_rmb() rmb () +#define smp_wmb() wmb () +#else +#define smp_mb() barrier () +#define smp_rmb() barrier () +#define smp_wmb() barrier () +#endif + +#define xchg(ptr, with) \ + ((__typeof__ (*(ptr)))__xchg ((unsigned long)(with), (ptr), sizeof (*(ptr)))) +#define tas(ptr) (xchg ((ptr), 1)) + +extern inline unsigned long __xchg (unsigned long with, + __volatile__ void *ptr, int size) +{ + unsigned long tmp, flags; + + save_flags_cli (flags); + + switch (size) { + case 1: + tmp = *(unsigned char *)ptr; + *(unsigned char *)ptr = with; + break; + case 2: + tmp = *(unsigned short *)ptr; + *(unsigned short *)ptr = with; + break; + case 4: + tmp = *(unsigned long *)ptr; + *(unsigned long *)ptr = with; + break; + } + + restore_flags (flags); + + return tmp; +} + +#endif /* __MICROBLAZE_SYSTEM_H__ */ diff --git a/arch/microblaze/include/asm/types.h b/arch/microblaze/include/asm/types.h new file mode 100644 index 0000000..77094f6 --- /dev/null +++ b/arch/microblaze/include/asm/types.h @@ -0,0 +1,60 @@ +#ifndef _ASM_TYPES_H +#define _ASM_TYPES_H + +/* + * This file is never included by application software unless + * explicitly requested (e.g., via linux/types.h) in which case the + * application is Linux specific so (user-) name space pollution is + * not a major issue. However, for interoperability, libraries still + * need to be careful to avoid a name clashes. + */ + +typedef unsigned short umode_t; + +/* + * __xx is ok: it doesn't pollute the POSIX namespace. Use these in the + * header files exported to user space + */ + +typedef __signed__ char __s8; +typedef unsigned char __u8; + +typedef __signed__ short __s16; +typedef unsigned short __u16; + +typedef __signed__ int __s32; +typedef unsigned int __u32; + +#if defined(__GNUC__) +__extension__ typedef __signed__ long long __s64; +__extension__ typedef unsigned long long __u64; +#endif + +/* + * These aren't exported outside the kernel to avoid name space clashes + */ +#ifdef __KERNEL__ + +typedef signed char s8; +typedef unsigned char u8; + +typedef signed short s16; +typedef unsigned short u16; + +typedef signed int s32; +typedef unsigned int u32; + +typedef signed long long s64; +typedef unsigned long long u64; + +#define BITS_PER_LONG 32 + +/* Dma addresses are 32-bits wide. */ + +typedef u32 dma_addr_t; + +typedef unsigned long phys_addr_t; +typedef unsigned long phys_size_t; +#endif /* __KERNEL__ */ + +#endif /* _ASM_TYPES_H */ diff --git a/arch/microblaze/include/asm/u-boot.h b/arch/microblaze/include/asm/u-boot.h new file mode 100644 index 0000000..8d00658 --- /dev/null +++ b/arch/microblaze/include/asm/u-boot.h @@ -0,0 +1,49 @@ +/* + * (C) Copyright 2004 Atmark Techno, Inc. + * + * Yasushi SHOJI <yashi@atmark-techno.com> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + ******************************************************************** + * NOTE: This header file defines an interface to U-Boot. Including + * this (unmodified) header file in another file is considered normal + * use of U-Boot, and does *not* fall under the heading of "derived + * work". + ******************************************************************** + */ + +#ifndef _U_BOOT_H_ +#define _U_BOOT_H_ + +typedef struct bd_info { + unsigned long bi_memstart; /* start of DRAM memory */ + phys_size_t bi_memsize; /* size of DRAM memory in bytes */ + unsigned long bi_flashstart; /* start of FLASH memory */ + unsigned long bi_flashsize; /* size of FLASH memory */ + unsigned long bi_flashoffset; /* reserved area for startup monitor */ + unsigned long bi_sramstart; /* start of SRAM memory */ + unsigned long bi_sramsize; /* size of SRAM memory */ + unsigned int bi_baudrate; /* Console Baudrate */ +} bd_t; + +/* For image.h:image_check_target_arch() */ +#define IH_ARCH_DEFAULT IH_ARCH_MICROBLAZE + +#endif /* _U_BOOT_H_ */ diff --git a/arch/microblaze/include/asm/unaligned.h b/arch/microblaze/include/asm/unaligned.h new file mode 100644 index 0000000..6cecbbb --- /dev/null +++ b/arch/microblaze/include/asm/unaligned.h @@ -0,0 +1 @@ +#include <asm-generic/unaligned.h> diff --git a/arch/microblaze/lib/Makefile b/arch/microblaze/lib/Makefile new file mode 100644 index 0000000..a40e8d4 --- /dev/null +++ b/arch/microblaze/lib/Makefile @@ -0,0 +1,47 @@ +# +# (C) Copyright 2003-2006 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. +# +# See file CREDITS for list of people who contributed to this +# project. +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License as +# published by the Free Software Foundation; either version 2 of +# the License, or (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, +# MA 02111-1307 USA +# + +include $(TOPDIR)/config.mk + +LIB = $(obj)lib$(ARCH).o + +SOBJS-y += + +COBJS-y += board.o +COBJS-$(CONFIG_CMD_BOOTM) += bootm.o +COBJS-y += muldi3.o + +SRCS := $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c) +OBJS := $(addprefix $(obj),$(SOBJS-y) $(COBJS-y)) + +$(LIB): $(obj).depend $(OBJS) + $(call cmd_link_o_target, $(OBJS)) + +######################################################################### + +# defines $(obj).depend target +include $(SRCTREE)/rules.mk + +sinclude $(obj).depend + +######################################################################### diff --git a/arch/microblaze/lib/board.c b/arch/microblaze/lib/board.c new file mode 100644 index 0000000..bb40243 --- /dev/null +++ b/arch/microblaze/lib/board.c @@ -0,0 +1,197 @@ +/* + * (C) Copyright 2007 Michal Simek + * (C) Copyright 2004 Atmark Techno, Inc. + * + * Michal SIMEK <monstr@monstr.eu> + * Yasushi SHOJI <yashi@atmark-techno.com> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <command.h> +#include <malloc.h> +#include <version.h> +#include <watchdog.h> +#include <stdio_dev.h> +#include <serial.h> +#include <net.h> +#include <linux/compiler.h> +#include <asm/processor.h> +#include <asm/microblaze_intc.h> +#include <fdtdec.h> + +DECLARE_GLOBAL_DATA_PTR; + +/* + * All attempts to come up with a "common" initialization sequence + * that works for all boards and architectures failed: some of the + * requirements are just _too_ different. To get rid of the resulting + * mess of board dependend #ifdef'ed code we now make the whole + * initialization sequence configurable to the user. + * + * The requirements for any new initalization function is simple: it + * receives a pointer to the "global data" structure as it's only + * argument, and returns an integer return code, where 0 means + * "continue" and != 0 means "fatal error, hang the system". + */ +typedef int (init_fnc_t) (void); + +init_fnc_t *init_sequence[] = { + env_init, +#ifdef CONFIG_OF_CONTROL + fdtdec_check_fdt, +#endif + serial_init, + console_init_f, + interrupts_init, +#ifdef CONFIG_XILINX_TB_WATCHDOG + hw_watchdog_init, +#endif + timer_init, + NULL, +}; + +unsigned long monitor_flash_len; + +void board_init_f(ulong not_used) +{ + bd_t *bd; + init_fnc_t **init_fnc_ptr; + gd = (gd_t *)(CONFIG_SYS_SDRAM_BASE + CONFIG_SYS_GBL_DATA_OFFSET); + bd = (bd_t *)(CONFIG_SYS_SDRAM_BASE + CONFIG_SYS_GBL_DATA_OFFSET + - GENERATED_BD_INFO_SIZE); +#if defined(CONFIG_CMD_FLASH) + ulong flash_size = 0; +#endif + asm ("nop"); /* FIXME gd is not initialize - wait */ + memset((void *)gd, 0, GENERATED_GBL_DATA_SIZE); + memset((void *)bd, 0, GENERATED_BD_INFO_SIZE); + gd->bd = bd; + gd->baudrate = CONFIG_BAUDRATE; + bd->bi_baudrate = CONFIG_BAUDRATE; + bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; + bd->bi_memsize = CONFIG_SYS_SDRAM_SIZE; + gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */ + + monitor_flash_len = __end - __text_start; + +#ifdef CONFIG_OF_EMBED + /* Get a pointer to the FDT */ + gd->fdt_blob = _binary_dt_dtb_start; +#elif defined CONFIG_OF_SEPARATE + /* FDT is at end of image */ + gd->fdt_blob = (void *)__end; +#endif + /* Allow the early environment to override the fdt address */ + gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16, + (uintptr_t)gd->fdt_blob); + + /* + * The Malloc area is immediately below the monitor copy in DRAM + * aka CONFIG_SYS_MONITOR_BASE - Note there is no need for reloc_off + * as our monitory code is run from SDRAM + */ + mem_malloc_init(CONFIG_SYS_MALLOC_BASE, CONFIG_SYS_MALLOC_LEN); + + serial_initialize(); + + for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) { + WATCHDOG_RESET(); + if ((*init_fnc_ptr) () != 0) + hang(); + } + +#ifdef CONFIG_OF_CONTROL + /* For now, put this check after the console is ready */ + if (fdtdec_prepare_fdt()) + panic("** No FDT - please see doc/README.fdt-control"); + else + printf("DTB: 0x%x\n", (u32)gd->fdt_blob); +#endif + + puts("SDRAM :\n"); + printf("\t\tIcache:%s\n", icache_status() ? "ON" : "OFF"); + printf("\t\tDcache:%s\n", dcache_status() ? "ON" : "OFF"); + printf("\tU-Boot Start:0x%08x\n", CONFIG_SYS_TEXT_BASE); + +#if defined(CONFIG_CMD_FLASH) + puts("Flash: "); + bd->bi_flashstart = CONFIG_SYS_FLASH_BASE; + flash_size = flash_init(); + if (bd->bi_flashstart && flash_size > 0) { +# ifdef CONFIG_SYS_FLASH_CHECKSUM + print_size(flash_size, ""); + /* + * Compute and print flash CRC if flashchecksum is set to 'y' + * + * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX + */ + if (getenv_yesno("flashchecksum") == 1) { + printf(" CRC: %08X", + crc32(0, (const u8 *)bd->bi_flashstart, + flash_size) + ); + } + putc('\n'); +# else /* !CONFIG_SYS_FLASH_CHECKSUM */ + print_size(flash_size, "\n"); +# endif /* CONFIG_SYS_FLASH_CHECKSUM */ + bd->bi_flashsize = flash_size; + bd->bi_flashoffset = bd->bi_flashstart + flash_size; + } else { + puts("Flash init FAILED"); + bd->bi_flashstart = 0; + bd->bi_flashsize = 0; + bd->bi_flashoffset = 0; + } +#endif + + /* relocate environment function pointers etc. */ + env_relocate(); + + /* Initialize stdio devices */ + stdio_init(); + + /* Initialize the jump table for applications */ + jumptable_init(); + + /* Initialize the console (after the relocation and devices init) */ + console_init_r(); + + board_init(); + + /* Initialize from environment */ + load_addr = getenv_ulong("loadaddr", 16, load_addr); + +#if defined(CONFIG_CMD_NET) + printf("Net: "); + eth_initialize(gd->bd); + + uchar enetaddr[6]; + eth_getenv_enetaddr("ethaddr", enetaddr); + printf("MAC: %pM\n", enetaddr); +#endif + + /* main_loop */ + for (;;) { + WATCHDOG_RESET(); + main_loop(); + } +} diff --git a/arch/microblaze/lib/bootm.c b/arch/microblaze/lib/bootm.c new file mode 100644 index 0000000..c5dfc9e --- /dev/null +++ b/arch/microblaze/lib/bootm.c @@ -0,0 +1,101 @@ +/* + * (C) Copyright 2007 Michal Simek + * (C) Copyright 2004 Atmark Techno, Inc. + * + * Michal SIMEK <monstr@monstr.eu> + * Yasushi SHOJI <yashi@atmark-techno.com> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <command.h> +#include <image.h> +#include <u-boot/zlib.h> +#include <asm/byteorder.h> + +DECLARE_GLOBAL_DATA_PTR; + +int do_bootm_linux(int flag, int argc, char * const argv[], + bootm_headers_t *images) +{ + /* First parameter is mapped to $r5 for kernel boot args */ + void (*thekernel) (char *, ulong, ulong); + char *commandline = getenv("bootargs"); + ulong rd_data_start, rd_data_end; + + /* + * allow the PREP bootm subcommand, it is required for bootm to work + */ + if (flag & BOOTM_STATE_OS_PREP) + return 0; + + if ((flag != 0) && (flag != BOOTM_STATE_OS_GO)) + return 1; + + int ret; + + char *of_flat_tree = NULL; +#if defined(CONFIG_OF_LIBFDT) + /* did generic code already find a device tree? */ + if (images->ft_len) + of_flat_tree = images->ft_addr; +#endif + + thekernel = (void (*)(char *, ulong, ulong))images->ep; + + /* find ramdisk */ + ret = boot_get_ramdisk(argc, argv, images, IH_ARCH_MICROBLAZE, + &rd_data_start, &rd_data_end); + if (ret) + return 1; + + bootstage_mark(BOOTSTAGE_ID_RUN_OS); + + if (!of_flat_tree && argc > 1) + of_flat_tree = (char *)simple_strtoul(argv[1], NULL, 16); + + /* fixup the initrd now that we know where it should be */ + if (images->rd_start && images->rd_end && of_flat_tree) + ret = fdt_initrd(of_flat_tree, images->rd_start, + images->rd_end, 1); + if (ret) + return 1; + +#ifdef DEBUG + printf("## Transferring control to Linux (at address 0x%08lx) ", + (ulong)thekernel); + printf("ramdisk 0x%08lx, FDT 0x%08lx...\n", + rd_data_start, (ulong) of_flat_tree); +#endif + +#ifdef XILINX_USE_DCACHE + flush_cache(0, XILINX_DCACHE_BYTE_SIZE); +#endif + /* + * Linux Kernel Parameters (passing device tree): + * r5: pointer to command line + * r6: pointer to ramdisk + * r7: pointer to the fdt, followed by the board info data + */ + thekernel(commandline, rd_data_start, (ulong)of_flat_tree); + /* does not return */ + + return 1; +} diff --git a/arch/microblaze/lib/muldi3.c b/arch/microblaze/lib/muldi3.c new file mode 100644 index 0000000..76d7590 --- /dev/null +++ b/arch/microblaze/lib/muldi3.c @@ -0,0 +1,91 @@ +/* + * U-boot - muldi3.c contains routines for mult and div + * + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, + * MA 02110-1301 USA + */ + +/* Generic function got from GNU gcc package, libgcc2.c */ +#ifndef SI_TYPE_SIZE +#define SI_TYPE_SIZE 32 +#endif +#define __ll_B (1L << (SI_TYPE_SIZE / 2)) +#define __ll_lowpart(t) ((USItype) (t) % __ll_B) +#define __ll_highpart(t) ((USItype) (t) / __ll_B) +#define BITS_PER_UNIT 8 + +#if !defined(umul_ppmm) +#define umul_ppmm(w1, w0, u, v) \ + do { \ + USItype __x0, __x1, __x2, __x3; \ + USItype __ul, __vl, __uh, __vh; \ + \ + __ul = __ll_lowpart(u); \ + __uh = __ll_highpart(u); \ + __vl = __ll_lowpart(v); \ + __vh = __ll_highpart(v); \ + \ + __x0 = (USItype) __ul * __vl; \ + __x1 = (USItype) __ul * __vh; \ + __x2 = (USItype) __uh * __vl; \ + __x3 = (USItype) __uh * __vh; \ + \ + __x1 += __ll_highpart(__x0); /* this can't give carry */\ + __x1 += __x2; /* but this indeed can */ \ + if (__x1 < __x2) /* did we get it? */ \ + __x3 += __ll_B; /* yes, add it in the proper pos. */ \ + \ + (w1) = __x3 + __ll_highpart(__x1); \ + (w0) = __ll_lowpart(__x1) * __ll_B + __ll_lowpart(__x0);\ + } while (0) +#endif + +#if !defined(__umulsidi3) +#define __umulsidi3(u, v) \ + ({DIunion __w; \ + umul_ppmm(__w.s.high, __w.s.low, u, v); \ + __w.ll; }) +#endif + +typedef unsigned int USItype __attribute__ ((mode(SI))); +typedef int SItype __attribute__ ((mode(SI))); +typedef int DItype __attribute__ ((mode(DI))); +typedef int word_type __attribute__ ((mode(__word__))); + +struct DIstruct { + SItype low, high; +}; +typedef union { + struct DIstruct s; + DItype ll; +} DIunion; + +DItype __muldi3(DItype u, DItype v) +{ + DIunion w; + DIunion uu, vv; + + uu.ll = u, vv.ll = v; + /* panic("kernel panic for __muldi3"); */ + w.ll = __umulsidi3(uu.s.low, vv.s.low); + w.s.high += ((USItype) uu.s.low * (USItype) vv.s.high + + (USItype) uu.s.high * (USItype) vv.s.low); + + return w.ll; +} diff --git a/arch/microblaze/lib/time.c b/arch/microblaze/lib/time.c new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/arch/microblaze/lib/time.c |
