diff options
| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2009-03-26 23:10:11 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-03-26 23:10:11 +0000 |
| commit | 542f869f1826f092606efd0c4c771f070d1314f5 (patch) | |
| tree | 9c9d265ab0c87ea7862ccb70933f33d3d7011334 | |
| parent | e8b374bb6c888a70530d800c9e2fcd153e2c325d (diff) | |
| parent | 839e642f3dda44a35c6a91780bff41d84c288022 (diff) | |
| download | op-kernel-dev-542f869f1826f092606efd0c4c771f070d1314f5.zip op-kernel-dev-542f869f1826f092606efd0c4c771f070d1314f5.tar.gz | |
Merge branch 'for-rmk' of git://gitorious.org/linux-gemini/mainline into devel
Conflicts:
arch/arm/mm/Kconfig
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
37 files changed, 2162 insertions, 15 deletions
diff --git a/MAINTAINERS b/MAINTAINERS index 50725d0..03b9fb9 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -502,6 +502,13 @@ P: Richard Purdie M: rpurdie@rpsys.net S: Maintained +ARM/CORTINA SYSTEMS GEMINI ARM ARCHITECTURE +P: Paulius Zaleckas +M: paulius.zaleckas@teltonika.lt +L: linux-arm-kernel@lists.arm.linux.org.uk (subscribers-only) +T: git gitorious.org/linux-gemini/mainline.git +S: Maintained + ARM/EZX SMARTPHONES (A780, A910, A1200, E680, ROKR E2 and ROKR E6) P: Daniel Ribeiro M: drwyrm@gmail.com @@ -513,6 +520,12 @@ L: openezx-devel@lists.openezx.org (subscribers-only) W: http://www.openezx.org/ S: Maintained +ARM/FARADAY FA526 PORT +P: Paulius Zaleckas +M: paulius.zaleckas@teltonika.lt +L: linux-arm-kernel@lists.arm.linux.org.uk (subscribers-only) +S: Maintained + ARM/FREESCALE IMX / MXC ARM ARCHITECTURE P: Sascha Hauer M: kernel@pengutronix.de diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index e62b37a..e02b893 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -276,6 +276,14 @@ config ARCH_EP93XX help This enables support for the Cirrus EP93xx series of CPUs. +config ARCH_GEMINI + bool "Cortina Systems Gemini" + select CPU_FA526 + select GENERIC_GPIO + select ARCH_REQUIRE_GPIOLIB + help + Support for the Cortina Systems Gemini family SoCs + config ARCH_FOOTBRIDGE bool "FootBridge" select CPU_SA110 @@ -616,6 +624,8 @@ source "arch/arm/mach-ep93xx/Kconfig" source "arch/arm/mach-footbridge/Kconfig" +source "arch/arm/mach-gemini/Kconfig" + source "arch/arm/mach-integrator/Kconfig" source "arch/arm/mach-iop32x/Kconfig" diff --git a/arch/arm/Makefile b/arch/arm/Makefile index 95186ef..e84729b 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -72,6 +72,7 @@ tune-$(CONFIG_CPU_ARM920T) :=-mtune=arm9tdmi tune-$(CONFIG_CPU_ARM922T) :=-mtune=arm9tdmi tune-$(CONFIG_CPU_ARM925T) :=-mtune=arm9tdmi tune-$(CONFIG_CPU_ARM926T) :=-mtune=arm9tdmi +tune-$(CONFIG_CPU_FA526) :=-mtune=arm9tdmi tune-$(CONFIG_CPU_SA110) :=-mtune=strongarm110 tune-$(CONFIG_CPU_SA1100) :=-mtune=strongarm1100 tune-$(CONFIG_CPU_XSCALE) :=$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale @@ -113,6 +114,7 @@ endif plat-$(CONFIG_PLAT_PXA) := pxa machine-$(CONFIG_ARCH_L7200) := l7200 machine-$(CONFIG_ARCH_INTEGRATOR) := integrator + machine-$(CONFIG_ARCH_GEMINI) := gemini textofs-$(CONFIG_ARCH_CLPS711X) := 0x00028000 machine-$(CONFIG_ARCH_CLPS711X) := clps711x machine-$(CONFIG_ARCH_IOP32X) := iop32x diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S index d14b827..b371fba 100644 --- a/arch/arm/boot/compressed/head.S +++ b/arch/arm/boot/compressed/head.S @@ -465,6 +465,20 @@ __armv7_mmu_cache_on: mcr p15, 0, r0, c7, c5, 4 @ ISB mov pc, r12 +__fa526_cache_on: + mov r12, lr + bl __setup_mmu + mov r0, #0 + mcr p15, 0, r0, c7, c7, 0 @ Invalidate whole cache + mcr p15, 0, r0, c7, c10, 4 @ drain write buffer + mcr p15, 0, r0, c8, c7, 0 @ flush UTLB + mrc p15, 0, r0, c1, c0, 0 @ read control reg + orr r0, r0, #0x1000 @ I-cache enable + bl __common_mmu_cache_on + mov r0, #0 + mcr p15, 0, r0, c8, c7, 0 @ flush UTLB + mov pc, r12 + __arm6_mmu_cache_on: mov r12, lr bl __setup_mmu @@ -654,6 +668,12 @@ proc_types: b __armv4_mmu_cache_off b __armv5tej_mmu_cache_flush + .word 0x66015261 @ FA526 + .word 0xff01fff1 + b __fa526_cache_on + b __armv4_mmu_cache_off + b __fa526_cache_flush + @ These match on the architecture ID .word 0x00020000 @ ARMv4T @@ -793,6 +813,12 @@ __armv4_mpu_cache_flush: mcr p15, 0, ip, c7, c10, 4 @ drain WB mov pc, lr +__fa526_cache_flush: + mov r1, #0 + mcr p15, 0, r1, c7, c14, 0 @ clean and invalidate D cache + mcr p15, 0, r1, c7, c5, 0 @ flush I cache + mcr p15, 0, r1, c7, c10, 4 @ drain WB + mov pc, lr __armv6_mmu_cache_flush: mov r1, #0 diff --git a/arch/arm/include/asm/cacheflush.h b/arch/arm/include/asm/cacheflush.h index bfb0cb9..bb7d695 100644 --- a/arch/arm/include/asm/cacheflush.h +++ b/arch/arm/include/asm/cacheflush.h @@ -46,6 +46,14 @@ # define MULTI_CACHE 1 #endif +#if defined(CONFIG_CPU_FA526) +# ifdef _CACHE +# define MULTI_CACHE 1 +# else +# define _CACHE fa +# endif +#endif + #if defined(CONFIG_CPU_ARM926T) # ifdef _CACHE # define MULTI_CACHE 1 diff --git a/arch/arm/include/asm/page.h b/arch/arm/include/asm/page.h index f341c9d..e6eb8a6 100644 --- a/arch/arm/include/asm/page.h +++ b/arch/arm/include/asm/page.h @@ -76,6 +76,14 @@ # endif #endif +#ifdef CONFIG_CPU_COPY_FA +# ifdef _USER +# define MULTI_USER 1 +# else +# define _USER fa +# endif +#endif + #ifdef CONFIG_CPU_SA1100 # ifdef _USER # define MULTI_USER 1 diff --git a/arch/arm/include/asm/proc-fns.h b/arch/arm/include/asm/proc-fns.h index c625031..3976412 100644 --- a/arch/arm/include/asm/proc-fns.h +++ b/arch/arm/include/asm/proc-fns.h @@ -89,6 +89,14 @@ # define CPU_NAME cpu_arm922 # endif # endif +# ifdef CONFIG_CPU_FA526 +# ifdef CPU_NAME +# undef MULTI_CPU +# define MULTI_CPU +# else +# define CPU_NAME cpu_fa526 +# endif +# endif # ifdef CONFIG_CPU_ARM925T # ifdef CPU_NAME # undef MULTI_CPU diff --git a/arch/arm/include/asm/system.h b/arch/arm/include/asm/system.h index 0a0d49a..bd4dc8e 100644 --- a/arch/arm/include/asm/system.h +++ b/arch/arm/include/asm/system.h @@ -125,6 +125,12 @@ extern unsigned int user_debug; : : "r" (0) : "memory") #define dmb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c10, 5" \ : : "r" (0) : "memory") +#elif defined(CONFIG_CPU_FA526) +#define isb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c5, 4" \ + : : "r" (0) : "memory") +#define dsb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c10, 4" \ + : : "r" (0) : "memory") +#define dmb() __asm__ __volatile__ ("" : : : "memory") #else #define isb() __asm__ __volatile__ ("" : : : "memory") #define dsb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c10, 4" \ diff --git a/arch/arm/include/asm/tlbflush.h b/arch/arm/include/asm/tlbflush.h index b543a05..a622180 100644 --- a/arch/arm/include/asm/tlbflush.h +++ b/arch/arm/include/asm/tlbflush.h @@ -39,6 +39,7 @@ #define TLB_V6_D_ASID (1 << 17) #define TLB_V6_I_ASID (1 << 18) +#define TLB_BTB (1 << 28) #define TLB_L2CLEAN_FR (1 << 29) /* Feroceon */ #define TLB_DCLEAN (1 << 30) #define TLB_WB (1 << 31) @@ -53,6 +54,7 @@ * v4wb - ARMv4 with write buffer without I TLB flush entry instruction * v4wbi - ARMv4 with write buffer with I TLB flush entry instruction * fr - Feroceon (v4wbi with non-outer-cacheable page table walks) + * fa - Faraday (v4 with write buffer with UTLB and branch target buffer (BTB)) * v6wbi - ARMv6 with write buffer with I TLB flush entry instruction * v7wbi - identical to v6wbi */ @@ -89,6 +91,22 @@ # define v4_always_flags (-1UL) #endif +#define fa_tlb_flags (TLB_WB | TLB_BTB | TLB_DCLEAN | \ + TLB_V4_U_FULL | TLB_V4_U_PAGE) + +#ifdef CONFIG_CPU_TLB_FA +# define fa_possible_flags fa_tlb_flags +# define fa_always_flags fa_tlb_flags +# ifdef _TLB +# define MULTI_TLB 1 +# else +# define _TLB fa +# endif +#else +# define fa_possible_flags 0 +# define fa_always_flags (-1UL) +#endif + #define v4wbi_tlb_flags (TLB_WB | TLB_DCLEAN | \ TLB_V4_I_FULL | TLB_V4_D_FULL | \ TLB_V4_I_PAGE | TLB_V4_D_PAGE) @@ -140,7 +158,7 @@ # define v4wb_always_flags (-1UL) #endif -#define v6wbi_tlb_flags (TLB_WB | TLB_DCLEAN | \ +#define v6wbi_tlb_flags (TLB_WB | TLB_DCLEAN | TLB_BTB | \ TLB_V6_I_FULL | TLB_V6_D_FULL | \ TLB_V6_I_PAGE | TLB_V6_D_PAGE | \ TLB_V6_I_ASID | TLB_V6_D_ASID) @@ -267,6 +285,7 @@ extern struct cpu_tlb_fns cpu_tlb; v4wbi_possible_flags | \ fr_possible_flags | \ v4wb_possible_flags | \ + fa_possible_flags | \ v6wbi_possible_flags | \ v7wbi_possible_flags) @@ -275,6 +294,7 @@ extern struct cpu_tlb_fns cpu_tlb; v4wbi_always_flags & \ fr_always_flags & \ v4wb_always_flags & \ + fa_always_flags & \ v6wbi_always_flags & \ v7wbi_always_flags) @@ -297,9 +317,7 @@ static inline void local_flush_tlb_all(void) if (tlb_flag(TLB_V4_I_FULL | TLB_V6_I_FULL)) asm("mcr p15, 0, %0, c8, c5, 0" : : "r" (zero) : "cc"); - if (tlb_flag(TLB_V6_I_FULL | TLB_V6_D_FULL | - TLB_V6_I_PAGE | TLB_V6_D_PAGE | - TLB_V6_I_ASID | TLB_V6_D_ASID)) { + if (tlb_flag(TLB_BTB)) { /* flush the branch target cache */ asm("mcr p15, 0, %0, c7, c5, 6" : : "r" (zero) : "cc"); dsb(); @@ -334,9 +352,7 @@ static inline void local_flush_tlb_mm(struct mm_struct *mm) if (tlb_flag(TLB_V6_I_ASID)) asm("mcr p15, 0, %0, c8, c5, 2" : : "r" (asid) : "cc"); - if (tlb_flag(TLB_V6_I_FULL | TLB_V6_D_FULL | - TLB_V6_I_PAGE | TLB_V6_D_PAGE | - TLB_V6_I_ASID | TLB_V6_D_ASID)) { + if (tlb_flag(TLB_BTB)) { /* flush the branch target cache */ asm("mcr p15, 0, %0, c7, c5, 6" : : "r" (zero) : "cc"); dsb(); @@ -374,9 +390,7 @@ local_flush_tlb_page(struct vm_area_struct *vma, unsigned long uaddr) if (tlb_flag(TLB_V6_I_PAGE)) asm("mcr p15, 0, %0, c8, c5, 1" : : "r" (uaddr) : "cc"); - if (tlb_flag(TLB_V6_I_FULL | TLB_V6_D_FULL | - TLB_V6_I_PAGE | TLB_V6_D_PAGE | - TLB_V6_I_ASID | TLB_V6_D_ASID)) { + if (tlb_flag(TLB_BTB)) { /* flush the branch target cache */ asm("mcr p15, 0, %0, c7, c5, 6" : : "r" (zero) : "cc"); dsb(); @@ -411,9 +425,7 @@ static inline void local_flush_tlb_kernel_page(unsigned long kaddr) if (tlb_flag(TLB_V6_I_PAGE)) asm("mcr p15, 0, %0, c8, c5, 1" : : "r" (kaddr) : "cc"); - if (tlb_flag(TLB_V6_I_FULL | TLB_V6_D_FULL | - TLB_V6_I_PAGE | TLB_V6_D_PAGE | - TLB_V6_I_ASID | TLB_V6_D_ASID)) { + if (tlb_flag(TLB_BTB)) { /* flush the branch target cache */ asm("mcr p15, 0, %0, c7, c5, 6" : : "r" (zero) : "cc"); dsb(); diff --git a/arch/arm/mach-gemini/Kconfig b/arch/arm/mach-gemini/Kconfig new file mode 100644 index 0000000..515b75c --- /dev/null +++ b/arch/arm/mach-gemini/Kconfig @@ -0,0 +1,19 @@ +if ARCH_GEMINI + +menu "Cortina Systems Gemini Implementations" + +config MACH_RUT100 + bool "Teltonika RUT100" + select GEMINI_MEM_SWAP + help + Say Y here if you intend to run this kernel on a + Teltonika 3G Router RUT100. + +endmenu + +config GEMINI_MEM_SWAP + bool "Gemini memory is swapped" + help + Say Y here if Gemini memory is swapped by bootloader. + +endif diff --git a/arch/arm/mach-gemini/Makefile b/arch/arm/mach-gemini/Makefile new file mode 100644 index 0000000..719505b --- /dev/null +++ b/arch/arm/mach-gemini/Makefile @@ -0,0 +1,10 @@ +# +# Makefile for the linux kernel. +# + +# Object file lists. + +obj-y := irq.o mm.o time.o devices.o gpio.o + +# Board-specific support +obj-$(CONFIG_MACH_RUT100) += board-rut1xx.o diff --git a/arch/arm/mach-gemini/Makefile.boot b/arch/arm/mach-gemini/Makefile.boot new file mode 100644 index 0000000..22a52c22 --- /dev/null +++ b/arch/arm/mach-gemini/Makefile.boot @@ -0,0 +1,9 @@ +ifeq ($(CONFIG_GEMINI_MEM_SWAP),y) + zreladdr-y := 0x00008000 +params_phys-y := 0x00000100 +initrd_phys-y := 0x00800000 +else + zreladdr-y := 0x10008000 +params_phys-y := 0x10000100 +initrd_phys-y := 0x10800000 +endif diff --git a/arch/arm/mach-gemini/board-rut1xx.c b/arch/arm/mach-gemini/board-rut1xx.c new file mode 100644 index 0000000..e0de968 --- /dev/null +++ b/arch/arm/mach-gemini/board-rut1xx.c @@ -0,0 +1,95 @@ +/* + * Support for Teltonika RUT1xx + * + * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * 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. + */ +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/leds.h> +#include <linux/input.h> +#include <linux/gpio_keys.h> + +#include <asm/mach-types.h> +#include <asm/mach/arch.h> +#include <asm/mach/time.h> + +#include "common.h" + +static struct gpio_keys_button rut1xx_keys[] = { + { + .code = KEY_SETUP, + .gpio = 60, + .active_low = 1, + .desc = "Reset to defaults", + .type = EV_KEY, + }, +}; + +static struct gpio_keys_platform_data rut1xx_keys_data = { + .buttons = rut1xx_keys, + .nbuttons = ARRAY_SIZE(rut1xx_keys), +}; + +static struct platform_device rut1xx_keys_device = { + .name = "gpio-keys", + .id = -1, + .dev = { + .platform_data = &rut1xx_keys_data, + }, +}; + +static struct gpio_led rut100_leds[] = { + { + .name = "Power", + .default_trigger = "heartbeat", + .gpio = 17, + }, + { + .name = "GSM", + .default_trigger = "default-on", + .gpio = 7, + .active_low = 1, + }, +}; + +static struct gpio_led_platform_data rut100_leds_data = { + .num_leds = ARRAY_SIZE(rut100_leds), + .leds = rut100_leds, +}; + +static struct platform_device rut1xx_leds = { + .name = "leds-gpio", + .id = -1, + .dev = { + .platform_data = &rut100_leds_data, + }, +}; + +static struct sys_timer rut1xx_timer = { + .init = gemini_timer_init, +}; + +static void __init rut1xx_init(void) +{ + gemini_gpio_init(); + platform_register_uart(); + platform_register_pflash(SZ_8M, NULL, 0); + platform_device_register(&rut1xx_leds); + platform_device_register(&rut1xx_keys_device); +} + +MACHINE_START(RUT100, "Teltonika RUT100") + .phys_io = 0x7fffc000, + .io_pg_offst = ((0xffffc000) >> 18) & 0xfffc, + .boot_params = 0x100, + .map_io = gemini_map_io, + .init_irq = gemini_init_irq, + .timer = &rut1xx_timer, + .init_machine = rut1xx_init, +MACHINE_END diff --git a/arch/arm/mach-gemini/common.h b/arch/arm/mach-gemini/common.h new file mode 100644 index 0000000..9392834 --- /dev/null +++ b/arch/arm/mach-gemini/common.h @@ -0,0 +1,28 @@ +/* + * Common Gemini architecture functions + * + * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * 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. + */ + +#ifndef __GEMINI_COMMON_H__ +#define __GEMINI_COMMON_H__ + +struct mtd_partition; + +extern void gemini_map_io(void); +extern void gemini_init_irq(void); +extern void gemini_timer_init(void); +extern void gemini_gpio_init(void); + +/* Common platform devices registration functions */ +extern int platform_register_uart(void); +extern int platform_register_pflash(unsigned int size, + struct mtd_partition *parts, + unsigned int nr_parts); + +#endif /* __GEMINI_COMMON_H__ */ diff --git a/arch/arm/mach-gemini/devices.c b/arch/arm/mach-gemini/devices.c new file mode 100644 index 0000000..6b52525 --- /dev/null +++ b/arch/arm/mach-gemini/devices.c @@ -0,0 +1,92 @@ +/* + * Common devices definition for Gemini + * + * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/platform_device.h> +#include <linux/serial_8250.h> +#include <linux/mtd/physmap.h> + +#include <mach/irqs.h> +#include <mach/hardware.h> +#include <mach/global_reg.h> + +static struct plat_serial8250_port serial_platform_data[] = { + { + .membase = (void *)IO_ADDRESS(GEMINI_UART_BASE), + .mapbase = GEMINI_UART_BASE, + .irq = IRQ_UART, + .uartclk = UART_CLK, + .regshift = 2, + .iotype = UPIO_MEM, + .type = PORT_16550A, + .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_FIXED_TYPE, + }, + {}, +}; + +static struct platform_device serial_device = { + .name = "serial8250", + .id = PLAT8250_DEV_PLATFORM, + .dev = { + .platform_data = serial_platform_data, + }, +}; + +int platform_register_uart(void) +{ + return platform_device_register(&serial_device); +} + +static struct resource flash_resource = { + .start = GEMINI_FLASH_BASE, + .flags = IORESOURCE_MEM, +}; + +static struct physmap_flash_data pflash_platform_data = {}; + +static struct platform_device pflash_device = { + .name = "physmap-flash", + .id = 0, + .dev = { + .platform_data = &pflash_platform_data, + }, + .resource = &flash_resource, + .num_resources = 1, +}; + +int platform_register_pflash(unsigned int size, struct mtd_partition *parts, + unsigned int nr_parts) +{ + unsigned int reg; + + reg = __raw_readl(IO_ADDRESS(GEMINI_GLOBAL_BASE) + GLOBAL_STATUS); + + if ((reg & FLASH_TYPE_MASK) != FLASH_TYPE_PARALLEL) + return -ENXIO; + + if (reg & FLASH_WIDTH_16BIT) + pflash_platform_data.width = 2; + else + pflash_platform_data.width = 1; + + /* enable parallel flash pins and disable others */ + reg = __raw_readl(IO_ADDRESS(GEMINI_GLOBAL_BASE) + GLOBAL_MISC_CTRL); + reg &= ~PFLASH_PADS_DISABLE; + reg |= SFLASH_PADS_DISABLE | NAND_PADS_DISABLE; + __raw_writel(reg, IO_ADDRESS(GEMINI_GLOBAL_BASE) + GLOBAL_MISC_CTRL); + + flash_resource.end = flash_resource.start + size - 1; + + pflash_platform_data.parts = parts; + pflash_platform_data.nr_parts = nr_parts; + + return platform_device_register(&pflash_device); +} diff --git a/arch/arm/mach-gemini/gpio.c b/arch/arm/mach-gemini/gpio.c new file mode 100644 index 0000000..e726385 --- /dev/null +++ b/arch/arm/mach-gemini/gpio.c @@ -0,0 +1,232 @@ +/* + * Gemini gpiochip and interrupt routines + * + * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * Based on plat-mxc/gpio.c: + * MXC GPIO support. (c) 2008 Daniel Mack <daniel@caiaq.de> + * Copyright 2008 Juergen Beisert, kernel@pengutronix.de + * + * 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. + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/irq.h> +#include <linux/gpio.h> + +#include <mach/hardware.h> +#include <mach/irqs.h> + +#define GPIO_BASE(x) IO_ADDRESS(GEMINI_GPIO_BASE(x)) + +/* GPIO registers definition */ +#define GPIO_DATA_OUT 0x0 +#define GPIO_DATA_IN 0x4 +#define GPIO_DIR 0x8 +#define GPIO_DATA_SET 0x10 +#define GPIO_DATA_CLR 0x14 +#define GPIO_PULL_EN 0x18 +#define GPIO_PULL_TYPE 0x1C +#define GPIO_INT_EN 0x20 +#define GPIO_INT_STAT 0x24 +#define GPIO_INT_MASK 0x2C +#define GPIO_INT_CLR 0x30 +#define GPIO_INT_TYPE 0x34 +#define GPIO_INT_BOTH_EDGE 0x38 +#define GPIO_INT_LEVEL 0x3C +#define GPIO_DEBOUNCE_EN 0x40 +#define GPIO_DEBOUNCE_PRESCALE 0x44 + +#define GPIO_PORT_NUM 3 + +static void _set_gpio_irqenable(unsigned int base, unsigned int index, + int enable) +{ + unsigned int reg; + + reg = __raw_readl(base + GPIO_INT_EN); + reg = (reg & (~(1 << index))) | (!!enable << index); + __raw_writel(reg, base + GPIO_INT_EN); +} + +static void gpio_ack_irq(unsigned int irq) +{ + unsigned int gpio = irq_to_gpio(irq); + unsigned int base = GPIO_BASE(gpio / 32); + + __raw_writel(1 << (gpio % 32), base + GPIO_INT_CLR); +} + +static void gpio_mask_irq(unsigned int irq) +{ + unsigned int gpio = irq_to_gpio(irq); + unsigned int base = GPIO_BASE(gpio / 32); + + _set_gpio_irqenable(base, gpio % 32, 0); +} + +static void gpio_unmask_irq(unsigned int irq) +{ + unsigned int gpio = irq_to_gpio(irq); + unsigned int base = GPIO_BASE(gpio / 32); + + _set_gpio_irqenable(base, gpio % 32, 1); +} + +static int gpio_set_irq_type(unsigned int irq, unsigned int type) +{ + unsigned int gpio = irq_to_gpio(irq); + unsigned int gpio_mask = 1 << (gpio % 32); + unsigned int base = GPIO_BASE(gpio / 32); + unsigned int reg_both, reg_level, reg_type; + + reg_type = __raw_readl(base + GPIO_INT_TYPE); + reg_level = __raw_readl(base + GPIO_INT_BOTH_EDGE); + reg_both = __raw_readl(base + GPIO_INT_BOTH_EDGE); + + switch (type) { + case IRQ_TYPE_EDGE_BOTH: + reg_type &= ~gpio_mask; + reg_both |= gpio_mask; + break; + case IRQ_TYPE_EDGE_RISING: + reg_type &= ~gpio_mask; + reg_both &= ~gpio_mask; + reg_level &= ~gpio_mask; + break; + case IRQ_TYPE_EDGE_FALLING: + reg_type &= ~gpio_mask; + reg_both &= ~gpio_mask; + reg_level |= gpio_mask; + break; + case IRQ_TYPE_LEVEL_HIGH: + reg_type |= gpio_mask; + reg_level &= ~gpio_mask; + break; + case IRQ_TYPE_LEVEL_LOW: + reg_type |= gpio_mask; + reg_level |= gpio_mask; + break; + default: + return -EINVAL; + } + + __raw_writel(reg_type, base + GPIO_INT_TYPE); + __raw_writel(reg_level, base + GPIO_INT_BOTH_EDGE); + __raw_writel(reg_both, base + GPIO_INT_BOTH_EDGE); + + gpio_ack_irq(irq); + + return 0; +} + +static void gpio_irq_handler(unsigned int irq, struct irq_desc *desc) +{ + unsigned int gpio_irq_no, irq_stat; + unsigned int port = (unsigned int)get_irq_data(irq); + + irq_stat = __raw_readl(GPIO_BASE(port) + GPIO_INT_STAT); + + gpio_irq_no = GPIO_IRQ_BASE + port * 32; + for (; irq_stat != 0; irq_stat >>= 1, gpio_irq_no++) { + + if ((irq_stat & 1) == 0) + continue; + + BUG_ON(!(irq_desc[gpio_irq_no].handle_irq)); + irq_desc[gpio_irq_no].handle_irq(gpio_irq_no, + &irq_desc[gpio_irq_no]); + } +} + +static struct irq_chip gpio_irq_chip = { + .name = "GPIO", + .ack = gpio_ack_irq, + .mask = gpio_mask_irq, + .unmask = gpio_unmask_irq, + .set_type = gpio_set_irq_type, +}; + +static void _set_gpio_direction(struct gpio_chip *chip, unsigned offset, + int dir) +{ + unsigned int base = GPIO_BASE(offset / 32); + unsigned int reg; + + reg = __raw_readl(base + GPIO_DIR); + if (dir) + reg |= 1 << (offset % 32); + else + reg &= ~(1 << (offset % 32)); + __raw_writel(reg, base + GPIO_DIR); +} + +static void gemini_gpio_set(struct gpio_chip *chip, unsigned offset, int value) +{ + unsigned int base = GPIO_BASE(offset / 32); + + if (value) + __raw_writel(1 << (offset % 32), base + GPIO_DATA_SET); + else + __raw_writel(1 << (offset % 32), base + GPIO_DATA_CLR); +} + +static int gemini_gpio_get(struct gpio_chip *chip, unsigned offset) +{ + unsigned int base = GPIO_BASE(offset / 32); + + return (__raw_readl(base + GPIO_DATA_IN) >> (offset % 32)) & 1; +} + +static int gemini_gpio_direction_input(struct gpio_chip *chip, unsigned offset) +{ + _set_gpio_direction(chip, offset, 0); + return 0; +} + +static int gemini_gpio_direction_output(struct gpio_chip *chip, unsigned offset, + int value) +{ + _set_gpio_direction(chip, offset, 1); + gemini_gpio_set(chip, offset, value); + return 0; +} + +static struct gpio_chip gemini_gpio_chip = { + .label = "Gemini", + .direction_input = gemini_gpio_direction_input, + .get = gemini_gpio_get, + .direction_output = gemini_gpio_direction_output, + .set = gemini_gpio_set, + .base = 0, + .ngpio = GPIO_PORT_NUM * 32, +}; + +void __init gemini_gpio_init(void) +{ + int i, j; + + for (i = 0; i < GPIO_PORT_NUM; i++) { + /* disable, unmask and clear all interrupts */ + __raw_writel(0x0, GPIO_BASE(i) + GPIO_INT_EN); + __raw_writel(0x0, GPIO_BASE(i) + GPIO_INT_MASK); + __raw_writel(~0x0, GPIO_BASE(i) + GPIO_INT_CLR); + + for (j = GPIO_IRQ_BASE + i * 32; + j < GPIO_IRQ_BASE + (i + 1) * 32; j++) { + set_irq_chip(j, &gpio_irq_chip); + set_irq_handler(j, handle_edge_irq); + set_irq_flags(j, IRQF_VALID); + } + + set_irq_chained_handler(IRQ_GPIO(i), gpio_irq_handler); + set_irq_data(IRQ_GPIO(i), (void *)i); + } + + BUG_ON(gpiochip_add(&gemini_gpio_chip)); +} diff --git a/arch/arm/mach-gemini/include/mach/debug-macro.S b/arch/arm/mach-gemini/include/mach/debug-macro.S new file mode 100644 index 0000000..d04a6ea --- /dev/null +++ b/arch/arm/mach-gemini/include/mach/debug-macro.S @@ -0,0 +1,23 @@ +/* + * Debugging macro include header + * + * Copyright (C) 1994-1999 Russell King + * Copyright (C) 2001-2006 Storlink, Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include <mach/hardware.h> + + .macro addruart,rx + mrc p15, 0, \rx, c1, c0 + tst \rx, #1 @ MMU enabled? + ldreq \rx, =GEMINI_UART_BASE @ physical + ldrne \rx, =IO_ADDRESS(GEMINI_UART_BASE) @ virtual + .endm + +#define UART_SHIFT 2 +#define FLOW_CONTROL +#include <asm/hardware/debug-8250.S> diff --git a/arch/arm/mach-gemini/include/mach/entry-macro.S b/arch/arm/mach-gemini/include/mach/entry-macro.S new file mode 100644 index 0000000..1624f91 --- /dev/null +++ b/arch/arm/mach-gemini/include/mach/entry-macro.S @@ -0,0 +1,39 @@ +/* + * Low-level IRQ helper macros for Gemini platform. + * + * Copyright (C) 2001-2006 Storlink, Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ +#include <mach/hardware.h> + +#define IRQ_STATUS 0x14 + + .macro disable_fiq + .endm + + .macro get_irqnr_preamble, base, tmp + .endm + + .macro arch_ret_to_user, tmp1, tmp2 + .endm + + .macro get_irqnr_and_base, irqnr, irqstat, base, tmp + ldr \irqstat, =IO_ADDRESS(GEMINI_INTERRUPT_BASE + IRQ_STATUS) + ldr \irqnr, [\irqstat] + cmp \irqnr, #0 + beq 2313f + mov \tmp, \irqnr + mov \irqnr, #0 +2312: + tst \tmp, #1 + bne 2313f + add \irqnr, \irqnr, #1 + mov \tmp, \tmp, lsr #1 + cmp \irqnr, #31 + bcc 2312b +2313: + .endm diff --git a/arch/arm/mach-gemini/include/mach/global_reg.h b/arch/arm/mach-gemini/include/mach/global_reg.h new file mode 100644 index 0000000..de7ff7e --- /dev/null +++ b/arch/arm/mach-gemini/include/mach/global_reg.h @@ -0,0 +1,278 @@ +/* + * This file contains the hardware definitions for Gemini. + * + * Copyright (C) 2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * 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. + */ +#ifndef __MACH_GLOBAL_REG_H +#define __MACH_GLOBAL_REG_H + +/* Global Word ID Register*/ +#define GLOBAL_ID 0x00 + +#define CHIP_ID(reg) ((reg) >> 8) +#define CHIP_REVISION(reg) ((reg) & 0xFF) + +/* Global Status Register */ +#define GLOBAL_STATUS 0x04 + +#define CPU_BIG_ENDIAN (1 << 31) +#define PLL_OSC_30M (1 << 30) /* else 60MHz */ + +#define OPERATION_MODE_MASK (0xF << 26) +#define OPM_IDDQ (0xF << 26) +#define OPM_NAND (0xE << 26) +#define OPM_RING (0xD << 26) +#define OPM_DIRECT_BOOT (0xC << 26) +#define OPM_USB1_PHY_TEST (0xB << 26) +#define OPM_USB0_PHY_TEST (0xA << 26) +#define OPM_SATA1_PHY_TEST (0x9 << 26) +#define OPM_SATA0_PHY_TEST (0x8 << 26) +#define OPM_ICE_ARM (0x7 << 26) +#define OPM_ICE_FARADAY (0x6 << 26) +#define OPM_PLL_BYPASS (0x5 << 26) +#define OPM_DEBUG (0x4 << 26) +#define OPM_BURN_IN (0x3 << 26) +#define OPM_MBIST (0x2 << 26) +#define OPM_SCAN (0x1 << 26) +#define OPM_REAL (0x0 << 26) + +#define FLASH_TYPE_MASK (0x3 << 24) +#define FLASH_TYPE_NAND_2K (0x3 << 24) +#define FLASH_TYPE_NAND_512 (0x2 << 24) +#define FLASH_TYPE_PARALLEL (0x1 << 24) +#define FLASH_TYPE_SERIAL (0x0 << 24) +/* if parallel */ +#define FLASH_WIDTH_16BIT (1 << 23) /* else 8 bit */ +/* if serial */ +#define FLASH_ATMEL (1 << 23) /* else STM */ + +#define FLASH_SIZE_MASK (0x3 << 21) +#define NAND_256M (0x3 << 21) /* and more */ +#define NAND_128M (0x2 << 21) +#define NAND_64M (0x1 << 21) +#define NAND_32M (0x0 << 21) +#define ATMEL_16M (0x3 << 21) /* and more */ +#define ATMEL_8M (0x2 << 21) +#define ATMEL_4M_2M (0x1 << 21) +#define ATMEL_1M (0x0 << 21) /* and less */ +#define STM_32M (1 << 22) /* and more */ +#define STM_16M (0 << 22) /* and less */ + +#define FLASH_PARALLEL_HIGH_PIN_CNT (1 << 20) /* else low pin cnt */ + +#define CPU_AHB_RATIO_MASK (0x3 << 18) +#define CPU_AHB_1_1 (0x0 << 18) +#define CPU_AHB_3_2 (0x1 << 18) +#define CPU_AHB_24_13 (0x2 << 18) +#define CPU_AHB_2_1 (0x3 << 18) + +#define REG_TO_AHB_SPEED(reg) ((((reg) >> 15) & 0x7) * 10 + 130) +#define AHB_SPEED_TO_REG(x) ((((x - 130)) / 10) << 15) + +/* it is posible to override some settings, use >> OVERRIDE_xxxx_SHIFT */ +#define OVERRIDE_FLASH_TYPE_SHIFT 16 +#define OVERRIDE_FLASH_WIDTH_SHIFT 16 +#define OVERRIDE_FLASH_SIZE_SHIFT 16 +#define OVERRIDE_CPU_AHB_RATIO_SHIFT 15 +#define OVERRIDE_AHB_SPEED_SHIFT 15 + +/* Global PLL Control Register */ +#define GLOBAL_PLL_CTRL 0x08 + +#define PLL_BYPASS (1 << 31) +#define PLL_POWER_DOWN (1 << 8) +#define PLL_CONTROL_Q (0x1F << 0) + +/* Global Soft Reset Control Register */ +#define GLOBAL_RESET 0x0C + +#define RESET_GLOBAL (1 << 31) +#define RESET_CPU1 (1 << 30) +#define RESET_TVE (1 << 28) +#define RESET_SATA1 (1 << 27) +#define RESET_SATA0 (1 << 26) +#define RESET_CIR (1 << 25) +#define RESET_EXT_DEV (1 << 24) +#define RESET_WD (1 << 23) +#define RESET_GPIO2 (1 << 22) +#define RESET_GPIO1 (1 << 21) +#define RESET_GPIO0 (1 << 20) +#define RESET_SSP (1 << 19) +#define RESET_UART (1 << 18) +#define RESET_TIMER (1 << 17) +#define RESET_RTC (1 << 16) +#define RESET_INT1 (1 << 15) +#define RESET_INT0 (1 << 14) +#define RESET_LCD (1 << 13) +#define RESET_LPC (1 << 12) +#define RESET_APB (1 << 11) +#define RESET_DMA (1 << 10) +#define RESET_USB1 (1 << 9) +#define RESET_USB0 (1 << 8) +#define RESET_PCI (1 << 7) +#define RESET_GMAC1 (1 << 6) +#define RESET_GMAC0 (1 << 5) +#define RESET_SECURITY (1 << 4) +#define RESET_RAID (1 << 3) +#define RESET_IDE (1 << 2) +#define RESET_FLASH (1 << 1) +#define RESET_DRAM (1 << 0) + +/* Global IO Pad Driving Capability Control Register */ +#define GLOBAL_IO_DRIVING_CTRL 0x10 + +#define DRIVING_CURRENT_MASK 0x3 + +/* here 00-4mA, 01-8mA, 10-12mA, 11-16mA */ +#define GPIO1_PADS_31_28_SHIFT 28 +#define GPIO0_PADS_31_16_SHIFT 26 +#define GPIO0_PADS_15_0_SHIFT 24 +#define PCI_AND_EXT_RESET_PADS_SHIFT 22 +#define IDE_PADS_SHIFT 20 +#define GMAC1_PADS_SHIFT 18 +#define GMAC0_PADS_SHIFT 16 +/* DRAM is not in mA and poorly documented */ +#define DRAM_CLOCK_PADS_SHIFT 8 +#define DRAM_DATA_PADS_SHIFT 4 +#define DRAM_CONTROL_PADS_SHIFT 0 + +/* Global IO Pad Slew Rate Control Register */ +#define GLOBAL_IO_SLEW_RATE_CTRL 0x14 + +#define GPIO1_PADS_31_28_SLOW (1 << 10) +#define GPIO0_PADS_31_16_SLOW (1 << 9) +#define GPIO0_PADS_15_0_SLOW (1 << 8) +#define PCI_PADS_SLOW (1 << 7) +#define IDE_PADS_SLOW (1 << 6) +#define GMAC1_PADS_SLOW (1 << 5) +#define GMAC0_PADS_SLOW (1 << 4) +#define DRAM_CLOCK_PADS_SLOW (1 << 1) +#define DRAM_IO_PADS_SLOW (1 << 0) + +/* + * General skew control defines + * 16 steps, each step is around 0.2ns + */ +#define SKEW_MASK 0xF + +/* Global IDE PAD Skew Control Register */ +#define GLOBAL_IDE_SKEW_CTRL 0x18 + +#define IDE1_HOST_STROBE_DELAY_SHIFT 28 +#define IDE1_DEVICE_STROBE_DELAY_SHIFT 24 +#define IDE1_OUTPUT_IO_SKEW_SHIFT 20 +#define IDE1_INPUT_IO_SKEW_SHIFT 16 +#define IDE0_HOST_STROBE_DELAY_SHIFT 12 +#define IDE0_DEVICE_STROBE_DELAY_SHIFT 8 +#define IDE0_OUTPUT_IO_SKEW_SHIFT 4 +#define IDE0_INPUT_IO_SKEW_SHIFT 0 + +/* Global GMAC Control Pad Skew Control Register */ +#define GLOBAL_GMAC_CTRL_SKEW_CTRL 0x1C + +#define GMAC1_TXC_SKEW_SHIFT 28 +#define GMAC1_TXEN_SKEW_SHIFT 24 +#define GMAC1_RXC_SKEW_SHIFT 20 +#define GMAC1_RXDV_SKEW_SHIFT 16 +#define GMAC0_TXC_SKEW_SHIFT 12 +#define GMAC0_TXEN_SKEW_SHIFT 8 +#define GMAC0_RXC_SKEW_SHIFT 4 +#define GMAC0_RXDV_SKEW_SHIFT 0 + +/* Global GMAC0 Data PAD Skew Control Register */ +#define GLOBAL_GMAC0_DATA_SKEW_CTRL 0x20 +/* Global GMAC1 Data PAD Skew Control Register */ +#define GLOBAL_GMAC1_DATA_SKEW_CTRL 0x24 + +#define GMAC_TXD_SKEW_SHIFT(x) (((x) * 4) + 16) +#define GMAC_RXD_SKEW_SHIFT(x) ((x) * 4) + +/* CPU has two AHB busses. */ + +/* Global Arbitration0 Control Register */ +#define GLOBAL_ARBITRATION0_CTRL 0x28 + +#define BOOT_CONTROLLER_HIGH_PRIO (1 << 3) +#define DMA_BUS1_HIGH_PRIO (1 << 2) +#define CPU0_HIGH_PRIO (1 << 0) + +/* Global Arbitration1 Control Register */ +#define GLOBAL_ARBITRATION1_CTRL 0x2C + +#define TVE_HIGH_PRIO (1 << 9) +#define PCI_HIGH_PRIO (1 << 8) +#define USB1_HIGH_PRIO (1 << 7) +#define USB0_HIGH_PRIO (1 << 6) +#define GMAC1_HIGH_PRIO (1 << 5) +#define GMAC0_HIGH_PRIO (1 << 4) +#define SECURITY_HIGH_PRIO (1 << 3) +#define RAID_HIGH_PRIO (1 << 2) +#define IDE_HIGH_PRIO (1 << 1) +#define DMA_BUS2_HIGH_PRIO (1 << 0) + +/* Common bits for both arbitration registers */ +#define BURST_LENGTH_SHIFT 16 +#define BURST_LENGTH_MASK (0x3F << 16) + +/* Miscellaneous Control Register */ +#define GLOBAL_MISC_CTRL 0x30 + +#define MEMORY_SPACE_SWAP (1 << 31) +#define USB1_PLUG_MINIB (1 << 30) /* else plug is mini-A */ +#define USB0_PLUG_MINIB (1 << 29) +#define GMAC_GMII (1 << 28) +#define GMAC_1_ENABLE (1 << 27) +/* TODO: define ATA/SATA bits */ +#define USB1_VBUS_ON (1 << 23) +#define USB0_VBUS_ON (1 << 22) +#define APB_CLKOUT_ENABLE (1 << 21) +#define TVC_CLKOUT_ENABLE (1 << 20) +#define EXT_CLKIN_ENABLE (1 << 19) +#define PCI_66MHZ (1 << 18) /* else 33 MHz */ +#define PCI_CLKOUT_ENABLE (1 << 17) +#define LPC_CLKOUT_ENABLE (1 << 16) +#define USB1_WAKEUP_ON (1 << 15) +#define USB0_WAKEUP_ON (1 << 14) +/* TODO: define PCI idle detect bits */ +#define TVC_PADS_ENABLE (1 << 9) +#define SSP_PADS_ENABLE (1 << 8) +#define LCD_PADS_ENABLE (1 << 7) +#define LPC_PADS_ENABLE (1 << 6) +#define PCI_PADS_ENABLE (1 << 5) +#define IDE_PADS_ENABLE (1 << 4) +#define DRAM_PADS_POWER_DOWN (1 << 3) +#define NAND_PADS_DISABLE (1 << 2) +#define PFLASH_PADS_DISABLE (1 << 1) +#define SFLASH_PADS_DISABLE (1 << 0) + +/* Global Clock Control Register */ +#define GLOBAL_CLOCK_CTRL 0x34 + +#define POWER_STATE_G0 (1 << 31) +#define POWER_STATE_S1 (1 << 30) /* else it is S3/S4 state */ +#define SECURITY_APB_AHB (1 << 29) +/* else Security APB clk will be 0.75xAHB */ +/* TODO: TVC clock divider */ +#define PCI_CLKRUN_ENABLE (1 << 16) +#define BOOT_CLK_DISABLE (1 << 13) +#define TVC_CLK_DISABLE (1 << 12) +#define FLASH_CLK_DISABLE (1 << 11) +#define DDR_CLK_DISABLE (1 << 10) +#define PCI_CLK_DISABLE (1 << 9) +#define IDE_CLK_DISABLE (1 << 8) +#define USB1_CLK_DISABLE (1 << 7) +#define USB0_CLK_DISABLE (1 << 6) +#define SATA1_CLK_DISABLE (1 << 5) +#define SATA0_CLK_DISABLE (1 << 4) +#define GMAC1_CLK_DISABLE (1 << 3) +#define GMAC0_CLK_DISABLE (1 << 2) +#define SECURITY_CLK_DISABLE (1 << 1) + +/* TODO: other registers definitions if needed */ + +#endif /* __MACH_GLOBAL_REG_H */ diff --git a/arch/arm/mach-gemini/include/mach/gpio.h b/arch/arm/mach-gemini/include/mach/gpio.h new file mode 100644 index 0000000..3bc2c70 --- /dev/null +++ b/arch/arm/mach-gemini/include/mach/gpio.h @@ -0,0 +1,25 @@ +/* + * Gemini gpiolib specific defines + * + * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * 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. + */ + +#ifndef __MACH_GPIO_H__ +#define __MACH_GPIO_H__ + +#include <mach/irqs.h> +#include <asm-generic/gpio.h> + +#define gpio_get_value __gpio_get_value +#define gpio_set_value __gpio_set_value +#define gpio_cansleep __gpio_cansleep + +#define gpio_to_irq(x) ((x) + GPIO_IRQ_BASE) +#define irq_to_gpio(x) ((x) - GPIO_IRQ_BASE) + +#endif /* __MACH_GPIO_H__ */ diff --git a/arch/arm/mach-gemini/include/mach/hardware.h b/arch/arm/mach-gemini/include/mach/hardware.h new file mode 100644 index 0000000..de67526 --- /dev/null +++ b/arch/arm/mach-gemini/include/mach/hardware.h @@ -0,0 +1,75 @@ +/* + * This file contains the hardware definitions for Gemini. + * + * Copyright (C) 2001-2006 Storlink, Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * 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. + */ +#ifndef __MACH_HARDWARE_H +#define __MACH_HARDWARE_H + +/* + * Memory Map definitions + */ +/* FIXME: Does it really swap SRAM like this? */ +#ifdef CONFIG_GEMINI_MEM_SWAP +# define GEMINI_DRAM_BASE 0x00000000 +# define GEMINI_SRAM_BASE 0x20000000 +#else +# define GEMINI_SRAM_BASE 0x00000000 +# define GEMINI_DRAM_BASE 0x10000000 +#endif +#define GEMINI_FLASH_BASE 0x30000000 +#define GEMINI_GLOBAL_BASE 0x40000000 +#define GEMINI_WAQTCHDOG_BASE 0x41000000 +#define GEMINI_UART_BASE 0x42000000 +#define GEMINI_TIMER_BASE 0x43000000 +#define GEMINI_LCD_BASE 0x44000000 +#define GEMINI_RTC_BASE 0x45000000 +#define GEMINI_SATA_BASE 0x46000000 +#define GEMINI_LPC_HOST_BASE 0x47000000 +#define GEMINI_LPC_IO_BASE 0x47800000 +#define GEMINI_INTERRUPT_BASE 0x48000000 +/* TODO: Different interrupt controlers when SMP + * #define GEMINI_INTERRUPT0_BASE 0x48000000 + * #define GEMINI_INTERRUPT1_BASE 0x49000000 + */ +#define GEMINI_SSP_CTRL_BASE 0x4A000000 +#define GEMINI_POWER_CTRL_BASE 0x4B000000 +#define GEMINI_CIR_BASE 0x4C000000 +#define GEMINI_GPIO_BASE(x) (0x4D000000 + (x) * 0x1000000) +#define GEMINI_PCI_IO_BASE 0x50000000 +#define GEMINI_PCI_MEM_BASE 0x58000000 +#define GEMINI_TOE_BASE 0x60000000 +#define GEMINI_GMAC0_BASE 0x6000A000 +#define GEMINI_GMAC1_BASE 0x6000E000 +#define GEMINI_SECURITY_BASE 0x62000000 +#define GEMINI_IDE0_BASE 0x63000000 +#define GEMINI_IDE1_BASE 0x63400000 +#define GEMINI_RAID_BASE 0x64000000 +#define GEMINI_FLASH_CTRL_BASE 0x65000000 +#define GEMINI_DRAM_CTRL_BASE 0x66000000 +#define GEMINI_GENERAL_DMA_BASE 0x67000000 +#define GEMINI_USB0_BASE 0x68000000 +#define GEMINI_USB1_BASE 0x69000000 +#define GEMINI_BIG_ENDIAN_BASE 0x80000000 + +#define GEMINI_TIMER1_BASE GEMINI_TIMER_BASE +#define GEMINI_TIMER2_BASE (GEMINI_TIMER_BASE + 0x10) +#define GEMINI_TIMER3_BASE (GEMINI_TIMER_BASE + 0x20) + +/* + * UART Clock when System clk is 150MHz + */ +#define UART_CLK 48000000 + +/* + * macro to get at IO space when running virtually + */ +#define IO_ADDRESS(x) ((((x) & 0xFFF00000) >> 4) | ((x) & 0x000FFFFF) | 0xF0000000) + +#endif diff --git a/arch/arm/mach-gemini/include/mach/io.h b/arch/arm/mach-gemini/include/mach/io.h new file mode 100644 index 0000000..c548056 --- /dev/null +++ b/arch/arm/mach-gemini/include/mach/io.h @@ -0,0 +1,18 @@ +/* + * Copyright (C) 2001-2006 Storlink, Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * 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. + */ +#ifndef __MACH_IO_H +#define __MACH_IO_H + +#define IO_SPACE_LIMIT 0xffffffff + +#define __io(a) __typesafe_io(a) +#define __mem_pci(a) (a) + +#endif /* __MACH_IO_H */ diff --git a/arch/arm/mach-gemini/include/mach/irqs.h b/arch/arm/mach-gemini/include/mach/irqs.h new file mode 100644 index 0000000..06bc47e --- /dev/null +++ b/arch/arm/mach-gemini/include/mach/irqs.h @@ -0,0 +1,53 @@ +/* + * Copyright (C) 2001-2006 Storlink, Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * 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. + */ + +#ifndef __MACH_IRQS_H__ +#define __MACH_IRQS_H__ + +#define IRQ_SERIRQ1 31 +#define IRQ_SERIRQ0 30 +#define IRQ_PCID 29 +#define IRQ_PCIC 28 +#define IRQ_PCIB 27 +#define IRQ_PWR 26 +#define IRQ_CIR 25 +#define IRQ_GPIO(x) (22 + (x)) +#define IRQ_SSP 21 +#define IRQ_LPC 20 +#define IRQ_LCD 19 +#define IRQ_UART 18 +#define IRQ_RTC 17 +#define IRQ_TIMER3 16 +#define IRQ_TIMER2 15 +#define IRQ_TIMER1 14 +#define IRQ_FLASH 12 +#define IRQ_USB1 11 +#define IRQ_USB0 10 +#define IRQ_DMA 9 +#define IRQ_PCI 8 +#define IRQ_IPSEC 7 +#define IRQ_RAID 6 +#define IRQ_IDE1 5 +#define IRQ_IDE0 4 +#define IRQ_WATCHDOG 3 +#define IRQ_GMAC1 2 +#define IRQ_GMAC0 1 +#define IRQ_IPI 0 + +#define NORMAL_IRQ_NUM 32 + +#define GPIO_IRQ_BASE NORMAL_IRQ_NUM +#define GPIO_IRQ_NUM (3 * 32) + +#define ARCH_TIMER_IRQ IRQ_TIMER2 + +#define NR_IRQS (NORMAL_IRQ_NUM + GPIO_IRQ_NUM) + +#endif /* __MACH_IRQS_H__ */ diff --git a/arch/arm/mach-gemini/include/mach/memory.h b/arch/arm/mach-gemini/include/mach/memory.h new file mode 100644 index 0000000..2d14d5b --- /dev/null +++ b/arch/arm/mach-gemini/include/mach/memory.h @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2001-2006 Storlink, Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * 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. + */ +#ifndef __MACH_MEMORY_H +#define __MACH_MEMORY_H + +#ifdef CONFIG_GEMINI_MEM_SWAP +# define PHYS_OFFSET UL(0x00000000) +#else +# define PHYS_OFFSET UL(0x10000000) +#endif + +#endif /* __MACH_MEMORY_H */ diff --git a/arch/arm/mach-gemini/include/mach/system.h b/arch/arm/mach-gemini/include/mach/system.h new file mode 100644 index 0000000..bbbd727 --- /dev/null +++ b/arch/arm/mach-gemini/include/mach/system.h @@ -0,0 +1,37 @@ +/* + * Copyright (C) 2001-2006 Storlink, Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * 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. + */ +#ifndef __MACH_SYSTEM_H +#define __MACH_SYSTEM_H + +#include <linux/io.h> +#include <mach/hardware.h> +#include <mach/global_reg.h> + +static inline void arch_idle(void) +{ + /* + * Because of broken hardware we have to enable interrupts or the CPU + * will never wakeup... Acctualy it is not very good to enable + * interrupts here since scheduler can miss a tick, but there is + * no other way around this. Platforms that needs it for power saving + * should call enable_hlt() in init code, since by default it is + * disabled. + */ + local_irq_enable(); + cpu_do_idle(); +} + +static inline void arch_reset(char mode) +{ + __raw_writel(RESET_GLOBAL | RESET_CPU1, + IO_ADDRESS(GEMINI_GLOBAL_BASE) + GLOBAL_RESET); +} + +#endif /* __MACH_SYSTEM_H */ diff --git a/arch/arm/mach-gemini/include/mach/timex.h b/arch/arm/mach-gemini/include/mach/timex.h new file mode 100644 index 0000000..dc5690b --- /dev/null +++ b/arch/arm/mach-gemini/include/mach/timex.h @@ -0,0 +1,13 @@ +/* + * Gemini timex specifications + * + * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * 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. + */ + +/* When AHB bus frequency is 150MHz */ +#define CLOCK_TICK_RATE 38000000 diff --git a/arch/arm/mach-gemini/include/mach/uncompress.h b/arch/arm/mach-gemini/include/mach/uncompress.h new file mode 100644 index 0000000..59c5df7 --- /dev/null +++ b/arch/arm/mach-gemini/include/mach/uncompress.h @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * Based on mach-pxa/include/mach/uncompress.h: + * Copyright: (C) 2001 MontaVista Software 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. + */ + +#ifndef __MACH_UNCOMPRESS_H +#define __MACH_UNCOMPRESS_H + +#include <linux/serial_reg.h> +#include <mach/hardware.h> + +static volatile unsigned long *UART = (unsigned long *)GEMINI_UART_BASE; + +/* + * The following code assumes the serial port has already been + * initialized by the bootloader. If you didn't setup a port in + * your bootloader then nothing will appear (which might be desired). + */ +static inline void putc(char c) +{ + while (!(UART[UART_LSR] & UART_LSR_THRE)) + barrier(); + UART[UART_TX] = c; +} + +#define flush() do { } while (0) + +/* + * nothing to do + */ +#define arch_decomp_setup() + +#define arch_decomp_wdog() + +#endif /* __MACH_UNCOMPRESS_H */ diff --git a/arch/arm/mach-gemini/include/mach/vmalloc.h b/arch/arm/mach-gemini/include/mach/vmalloc.h new file mode 100644 index 0000000..83e536d --- /dev/null +++ b/arch/arm/mach-gemini/include/mach/vmalloc.h @@ -0,0 +1,10 @@ +/* + * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * 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. + */ + +#define VMALLOC_END 0xF0000000 diff --git a/arch/arm/mach-gemini/irq.c b/arch/arm/mach-gemini/irq.c new file mode 100644 index 0000000..9e613ca --- /dev/null +++ b/arch/arm/mach-gemini/irq.c @@ -0,0 +1,102 @@ +/* + * Interrupt routines for Gemini + * + * Copyright (C) 2001-2006 Storlink, Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * 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. + */ +#include <linux/init.h> +#include <linux/io.h> +#include <linux/ioport.h> +#include <linux/stddef.h> +#include <linux/list.h> +#include <linux/sched.h> +#include <asm/irq.h> +#include <asm/mach/irq.h> +#include <mach/hardware.h> + +#define IRQ_SOURCE(base_addr) (base_addr + 0x00) +#define IRQ_MASK(base_addr) (base_addr + 0x04) +#define IRQ_CLEAR(base_addr) (base_addr + 0x08) +#define IRQ_TMODE(base_addr) (base_addr + 0x0C) +#define IRQ_TLEVEL(base_addr) (base_addr + 0x10) +#define IRQ_STATUS(base_addr) (base_addr + 0x14) +#define FIQ_SOURCE(base_addr) (base_addr + 0x20) +#define FIQ_MASK(base_addr) (base_addr + 0x24) +#define FIQ_CLEAR(base_addr) (base_addr + 0x28) +#define FIQ_TMODE(base_addr) (base_addr + 0x2C) +#define FIQ_LEVEL(base_addr) (base_addr + 0x30) +#define FIQ_STATUS(base_addr) (base_addr + 0x34) + +static void gemini_ack_irq(unsigned int irq) +{ + __raw_writel(1 << irq, IRQ_CLEAR(IO_ADDRESS(GEMINI_INTERRUPT_BASE))); +} + +static void gemini_mask_irq(unsigned int irq) +{ + unsigned int mask; + + mask = __raw_readl(IRQ_MASK(IO_ADDRESS(GEMINI_INTERRUPT_BASE))); + mask &= ~(1 << irq); + __raw_writel(mask, IRQ_MASK(IO_ADDRESS(GEMINI_INTERRUPT_BASE))); +} + +static void gemini_unmask_irq(unsigned int irq) +{ + unsigned int mask; + + mask = __raw_readl(IRQ_MASK(IO_ADDRESS(GEMINI_INTERRUPT_BASE))); + mask |= (1 << irq); + __raw_writel(mask, IRQ_MASK(IO_ADDRESS(GEMINI_INTERRUPT_BASE))); +} + +static struct irq_chip gemini_irq_chip = { + .name = "INTC", + .ack = gemini_ack_irq, + .mask = gemini_mask_irq, + .unmask = gemini_unmask_irq, +}; + +static struct resource irq_resource = { + .name = "irq_handler", + .start = IO_ADDRESS(GEMINI_INTERRUPT_BASE), + .end = IO_ADDRESS(FIQ_STATUS(GEMINI_INTERRUPT_BASE)) + 4, +}; + +void __init gemini_init_irq(void) +{ + unsigned int i, mode = 0, level = 0; + + /* + * Disable arch_idle() by default since it is buggy + * For more info see arch/arm/mach-gemini/include/mach/system.h + */ + disable_hlt(); + + request_resource(&iomem_resource, &irq_resource); + + for (i = 0; i < NR_IRQS; i++) { + set_irq_chip(i, &gemini_irq_chip); + if((i >= IRQ_TIMER1 && i <= IRQ_TIMER3) || (i >= IRQ_SERIRQ0 && i <= IRQ_SERIRQ1)) { + set_irq_handler(i, handle_edge_irq); + mode |= 1 << i; + level |= 1 << i; + } else { + set_irq_handler(i, handle_level_irq); + } + set_irq_flags(i, IRQF_VALID | IRQF_PROBE); + } + + /* Disable all interrupts */ + __raw_writel(0, IRQ_MASK(IO_ADDRESS(GEMINI_INTERRUPT_BASE))); + __raw_writel(0, FIQ_MASK(IO_ADDRESS(GEMINI_INTERRUPT_BASE))); + + /* Set interrupt mode */ + __raw_writel(mode, IRQ_TMODE(IO_ADDRESS(GEMINI_INTERRUPT_BASE))); + __raw_writel(level, IRQ_TLEVEL(IO_ADDRESS(GEMINI_INTERRUPT_BASE))); +} diff --git a/arch/arm/mach-gemini/mm.c b/arch/arm/mach-gemini/mm.c new file mode 100644 index 0000000..5194824 --- /dev/null +++ b/arch/arm/mach-gemini/mm.c @@ -0,0 +1,82 @@ +/* + * Static mappings for Gemini + * + * Copyright (C) 2001-2006 Storlink, Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * 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. + */ +#include <linux/mm.h> +#include <linux/init.h> + +#include <asm/mach/map.h> + +#include <mach/hardware.h> + +/* Page table mapping for I/O region */ +static struct map_desc gemini_io_desc[] __initdata = { + { + .virtual = IO_ADDRESS(GEMINI_GLOBAL_BASE), + .pfn =__phys_to_pfn(GEMINI_GLOBAL_BASE), + .length = SZ_512K, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(GEMINI_UART_BASE), + .pfn = __phys_to_pfn(GEMINI_UART_BASE), + .length = SZ_512K, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(GEMINI_TIMER_BASE), + .pfn = __phys_to_pfn(GEMINI_TIMER_BASE), + .length = SZ_512K, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(GEMINI_INTERRUPT_BASE), + .pfn = __phys_to_pfn(GEMINI_INTERRUPT_BASE), + .length = SZ_512K, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(GEMINI_POWER_CTRL_BASE), + .pfn = __phys_to_pfn(GEMINI_POWER_CTRL_BASE), + .length = SZ_512K, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(GEMINI_GPIO_BASE(0)), + .pfn = __phys_to_pfn(GEMINI_GPIO_BASE(0)), + .length = SZ_512K, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(GEMINI_GPIO_BASE(1)), + .pfn = __phys_to_pfn(GEMINI_GPIO_BASE(1)), + .length = SZ_512K, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(GEMINI_GPIO_BASE(2)), + .pfn = __phys_to_pfn(GEMINI_GPIO_BASE(2)), + .length = SZ_512K, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(GEMINI_FLASH_CTRL_BASE), + .pfn = __phys_to_pfn(GEMINI_FLASH_CTRL_BASE), + .length = SZ_512K, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(GEMINI_DRAM_CTRL_BASE), + .pfn = __phys_to_pfn(GEMINI_DRAM_CTRL_BASE), + .length = SZ_512K, + .type = MT_DEVICE, + }, { + .virtual = IO_ADDRESS(GEMINI_GENERAL_DMA_BASE), + .pfn = __phys_to_pfn(GEMINI_GENERAL_DMA_BASE), + .length = SZ_512K, + .type = MT_DEVICE, + }, +}; + +void __init gemini_map_io(void) +{ + iotable_init(gemini_io_desc, ARRAY_SIZE(gemini_io_desc)); +} diff --git a/arch/arm/mach-gemini/time.c b/arch/arm/mach-gemini/time.c new file mode 100644 index 0000000..21dc5a8 --- /dev/null +++ b/arch/arm/mach-gemini/time.c @@ -0,0 +1,89 @@ +/* + * Copyright (C) 2001-2006 Storlink, Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * 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. + */ +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/io.h> +#include <mach/hardware.h> +#include <mach/global_reg.h> +#include <asm/mach/time.h> + +/* + * Register definitions for the timers + */ +#define TIMER_COUNT(BASE_ADDR) (BASE_ADDR + 0x00) +#define TIMER_LOAD(BASE_ADDR) (BASE_ADDR + 0x04) +#define TIMER_MATCH1(BASE_ADDR) (BASE_ADDR + 0x08) +#define TIMER_MATCH2(BASE_ADDR) (BASE_ADDR + 0x0C) +#define TIMER_CR(BASE_ADDR) (BASE_ADDR + 0x30) + +#define TIMER_1_CR_ENABLE (1 << 0) +#define TIMER_1_CR_CLOCK (1 << 1) +#define TIMER_1_CR_INT (1 << 2) +#define TIMER_2_CR_ENABLE (1 << 3) +#define TIMER_2_CR_CLOCK (1 << 4) +#define TIMER_2_CR_INT (1 << 5) +#define TIMER_3_CR_ENABLE (1 << 6) +#define TIMER_3_CR_CLOCK (1 << 7) +#define TIMER_3_CR_INT (1 << 8) + +/* + * IRQ handler for the timer + */ +static irqreturn_t gemini_timer_interrupt(int irq, void *dev_id) +{ + timer_tick(); + + return IRQ_HANDLED; +} + +static struct irqaction gemini_timer_irq = { + .name = "Gemini Timer Tick", + .flags = IRQF_DISABLED | IRQF_TIMER, + .handler = gemini_timer_interrupt, +}; + +/* + * Set up timer interrupt, and return the current time in seconds. + */ +void __init gemini_timer_init(void) +{ + unsigned int tick_rate, reg_v; + + reg_v = __raw_readl(IO_ADDRESS(GEMINI_GLOBAL_BASE + GLOBAL_STATUS)); + tick_rate = REG_TO_AHB_SPEED(reg_v) * 1000000; + + printk(KERN_INFO "Bus: %dMHz", tick_rate / 1000000); + + tick_rate /= 6; /* APB bus run AHB*(1/6) */ + + switch(reg_v & CPU_AHB_RATIO_MASK) { + case CPU_AHB_1_1: + printk(KERN_CONT "(1/1)\n"); + break; + case CPU_AHB_3_2: + printk(KERN_CONT "(3/2)\n"); + break; + case CPU_AHB_24_13: + printk(KERN_CONT "(24/13)\n"); + break; + case CPU_AHB_2_1: + printk(KERN_CONT "(2/1)\n"); + break; + } + + /* + * Make irqs happen for the system timer + */ + setup_irq(IRQ_TIMER2, &gemini_timer_irq); + /* Start the timer */ + __raw_writel(tick_rate / HZ, TIMER_COUNT(IO_ADDRESS(GEMINI_TIMER2_BASE))); + __raw_writel(tick_rate / HZ, TIMER_LOAD(IO_ADDRESS(GEMINI_TIMER2_BASE))); + __raw_writel(TIMER_2_CR_ENABLE | TIMER_2_CR_INT, TIMER_CR(IO_ADDRESS(GEMINI_TIMER_BASE))); +} diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig index a6230f7..2097956 100644 --- a/arch/arm/mm/Kconfig +++ b/arch/arm/mm/Kconfig @@ -186,6 +186,24 @@ config CPU_ARM926T Say Y if you want support for the ARM926T processor. Otherwise, say N. +# FA526 +config CPU_FA526 + bool + select CPU_32v4 + select CPU_ABRT_EV4 + select CPU_PABRT_NOIFAR + select CPU_CACHE_VIVT + select CPU_CP15_MMU + select CPU_CACHE_FA + select CPU_COPY_FA if MMU + select CPU_TLB_FA if MMU + help + The FA526 is a version of the ARMv4 compatible processor with + Branch Target Buffer, Unified TLB and cache line size 16. + + Say Y if you want support for the FA526 processor. + Otherwise, say N. + # ARM940T config CPU_ARM940T bool "Support ARM940T processor" if ARCH_INTEGRATOR @@ -495,6 +513,9 @@ config CPU_CACHE_VIVT config CPU_CACHE_VIPT bool +config CPU_CACHE_FA + bool + if MMU # The copy-page model config CPU_COPY_V3 @@ -509,6 +530,9 @@ config CPU_COPY_V4WB config CPU_COPY_FEROCEON bool +config CPU_COPY_FA + bool + config CPU_COPY_V6 bool @@ -539,6 +563,13 @@ config CPU_TLB_FEROCEON help Feroceon TLB (v4wbi with non-outer-cachable page table walks). +config CPU_TLB_FA + bool + help + Faraday ARM FA526 architecture, unified TLB with writeback cache + and invalidate instruction cache entry. Branch target buffer is + also supported. + config CPU_TLB_V6 bool @@ -649,7 +680,7 @@ config CPU_DCACHE_SIZE config CPU_DCACHE_WRITETHROUGH bool "Force write through D-cache" - depends on (CPU_ARM740T || CPU_ARM920T || CPU_ARM922T || CPU_ARM925T || CPU_ARM926T || CPU_ARM940T || CPU_ARM946E || CPU_ARM1020) && !CPU_DCACHE_DISABLE + depends on (CPU_ARM740T || CPU_ARM920T || CPU_ARM922T || CPU_ARM925T || CPU_ARM926T || CPU_ARM940T || CPU_ARM946E || CPU_ARM1020 || CPU_FA526) && !CPU_DCACHE_DISABLE default y if CPU_ARM925T help Say Y here to use the data cache in writethrough mode. Unless you @@ -664,7 +695,7 @@ config CPU_CACHE_ROUND_ROBIN config CPU_BPREDICT_DISABLE bool "Disable branch prediction" - depends on CPU_ARM1020 || CPU_V6 || CPU_MOHAWK || CPU_XSC3 || CPU_V7 + depends on CPU_ARM1020 || CPU_V6 || CPU_MOHAWK || CPU_XSC3 || CPU_V7 || CPU_FA526 help Say Y here to disable branch prediction. If unsure, say N. diff --git a/arch/arm/mm/Makefile b/arch/arm/mm/Makefile index c264683..63e3f6d 100644 --- a/arch/arm/mm/Makefile +++ b/arch/arm/mm/Makefile @@ -33,6 +33,7 @@ obj-$(CONFIG_CPU_CACHE_V4WT) += cache-v4wt.o obj-$(CONFIG_CPU_CACHE_V4WB) += cache-v4wb.o obj-$(CONFIG_CPU_CACHE_V6) += cache-v6.o obj-$(CONFIG_CPU_CACHE_V7) += cache-v7.o +obj-$(CONFIG_CPU_CACHE_FA) += cache-fa.o obj-$(CONFIG_CPU_COPY_V3) += copypage-v3.o obj-$(CONFIG_CPU_COPY_V4WT) += copypage-v4wt.o @@ -42,6 +43,7 @@ obj-$(CONFIG_CPU_COPY_V6) += copypage-v6.o context.o obj-$(CONFIG_CPU_SA1100) += copypage-v4mc.o obj-$(CONFIG_CPU_XSCALE) += copypage-xscale.o obj-$(CONFIG_CPU_XSC3) += copypage-xsc3.o +obj-$(CONFIG_CPU_COPY_FA) += copypage-fa.o obj-$(CONFIG_CPU_TLB_V3) += tlb-v3.o obj-$(CONFIG_CPU_TLB_V4WT) += tlb-v4.o @@ -50,6 +52,7 @@ obj-$(CONFIG_CPU_TLB_V4WBI) += tlb-v4wbi.o obj-$(CONFIG_CPU_TLB_FEROCEON) += tlb-v4wbi.o # reuse v4wbi TLB functions obj-$(CONFIG_CPU_TLB_V6) += tlb-v6.o obj-$(CONFIG_CPU_TLB_V7) += tlb-v7.o +obj-$(CONFIG_CPU_TLB_FA) += tlb-fa.o obj-$(CONFIG_CPU_ARM610) += proc-arm6_7.o obj-$(CONFIG_CPU_ARM710) += proc-arm6_7.o @@ -63,6 +66,7 @@ obj-$(CONFIG_CPU_ARM925T) += proc-arm925.o obj-$(CONFIG_CPU_ARM926T) += proc-arm926.o obj-$(CONFIG_CPU_ARM940T) += proc-arm940.o obj-$(CONFIG_CPU_ARM946E) += proc-arm946.o +obj-$(CONFIG_CPU_FA526) += proc-fa526.o obj-$(CONFIG_CPU_ARM1020) += proc-arm1020.o obj-$(CONFIG_CPU_ARM1020E) += proc-arm1020e.o obj-$(CONFIG_CPU_ARM1022) += proc-arm1022.o diff --git a/arch/arm/mm/cache-fa.S b/arch/arm/mm/cache-fa.S new file mode 100644 index 0000000..b63a8f7 --- /dev/null +++ b/arch/arm/mm/cache-fa.S @@ -0,0 +1,220 @@ +/* + * linux/arch/arm/mm/cache-fa.S + * + * Copyright (C) 2005 Faraday Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * Based on cache-v4wb.S: + * Copyright (C) 1997-2002 Russell king + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * Processors: FA520 FA526 FA626 + */ +#include <linux/linkage.h> +#include <linux/init.h> +#include <asm/memory.h> +#include <asm/page.h> + +#include "proc-macros.S" + +/* + * The size of one data cache line. + */ +#define CACHE_DLINESIZE 16 + +/* + * The total size of the data cache. + */ +#ifdef CONFIG_ARCH_GEMINI +#define CACHE_DSIZE 8192 +#else +#define CACHE_DSIZE 16384 +#endif + +/* FIXME: put optimal value here. Current one is just estimation */ +#define CACHE_DLIMIT (CACHE_DSIZE * 2) + +/* + * flush_user_cache_all() + * + * Clean and invalidate all cache entries in a particular address + * space. + */ +ENTRY(fa_flush_user_cache_all) + /* FALLTHROUGH */ +/* + * flush_kern_cache_all() + * + * Clean and invalidate the entire cache. + */ +ENTRY(fa_flush_kern_cache_all) + mov ip, #0 + mov r2, #VM_EXEC +__flush_whole_cache: + mcr p15, 0, ip, c7, c14, 0 @ clean/invalidate D cache + tst r2, #VM_EXEC + mcrne p15, 0, ip, c7, c5, 0 @ invalidate I cache + mcrne p15, 0, ip, c7, c5, 6 @ invalidate BTB + mcrne p15, 0, ip, c7, c10, 4 @ drain write buffer + mcrne p15, 0, ip, c7, c5, 4 @ prefetch flush + mov pc, lr + +/* + * flush_user_cache_range(start, end, flags) + * + * Invalidate a range of cache entries in the specified + * address space. + * + * - start - start address (inclusive, page aligned) + * - end - end address (exclusive, page aligned) + * - flags - vma_area_struct flags describing address space + */ +ENTRY(fa_flush_user_cache_range) + mov ip, #0 + sub r3, r1, r0 @ calculate total size + cmp r3, #CACHE_DLIMIT @ total size >= limit? + bhs __flush_whole_cache @ flush whole D cache + +1: tst r2, #VM_EXEC + mcrne p15, 0, r0, c7, c5, 1 @ invalidate I line + mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D entry + add r0, r0, #CACHE_DLINESIZE + cmp r0, r1 + blo 1b + tst r2, #VM_EXEC + mcrne p15, 0, ip, c7, c5, 6 @ invalidate BTB + mcrne p15, 0, ip, c7, c10, 4 @ data write barrier + mcrne p15, 0, ip, c7, c5, 4 @ prefetch flush + mov pc, lr + +/* + * coherent_kern_range(start, end) + * + * Ensure coherency between the Icache and the Dcache in the + * region described by start. If you have non-snooping + * Harvard caches, you need to implement this function. + * + * - start - virtual start address + * - end - virtual end address + */ +ENTRY(fa_coherent_kern_range) + /* fall through */ + +/* + * coherent_user_range(start, end) + * + * Ensure coherency between the Icache and the Dcache in the + * region described by start. If you have non-snooping + * Harvard caches, you need to implement this function. + * + * - start - virtual start address + * - end - virtual end address + */ +ENTRY(fa_coherent_user_range) + bic r0, r0, #CACHE_DLINESIZE - 1 +1: mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D entry + mcr p15, 0, r0, c7, c5, 1 @ invalidate I entry + add r0, r0, #CACHE_DLINESIZE + cmp r0, r1 + blo 1b + mov r0, #0 + mcr p15, 0, r0, c7, c5, 6 @ invalidate BTB + mcr p15, 0, r0, c7, c10, 4 @ drain write buffer + mcr p15, 0, r0, c7, c5, 4 @ prefetch flush + mov pc, lr + +/* + * flush_kern_dcache_page(kaddr) + * + * Ensure that the data held in the page kaddr is written back + * to the page in question. + * + * - kaddr - kernel address (guaranteed to be page aligned) + */ +ENTRY(fa_flush_kern_dcache_page) + add r1, r0, #PAGE_SZ +1: mcr p15, 0, r0, c7, c14, 1 @ clean & invalidate D line + add r0, r0, #CACHE_DLINESIZE + cmp r0, r1 + blo 1b + mov r0, #0 + mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache + mcr p15, 0, r0, c7, c10, 4 @ drain write buffer + mov pc, lr + +/* + * dma_inv_range(start, end) + * + * Invalidate (discard) the specified virtual address range. + * May not write back any entries. If 'start' or 'end' + * are not cache line aligned, those lines must be written + * back. + * + * - start - virtual start address + * - end - virtual end address + */ +ENTRY(fa_dma_inv_range) + tst r0, #CACHE_DLINESIZE - 1 + bic r0, r0, #CACHE_DLINESIZE - 1 + mcrne p15, 0, r0, c7, c14, 1 @ clean & invalidate D entry + tst r1, #CACHE_DLINESIZE - 1 + bic r1, r1, #CACHE_DLINESIZE - 1 + mcrne p15, 0, r1, c7, c14, 1 @ clean & invalidate D entry +1: mcr p15, 0, r0, c7, c6, 1 @ invalidate D entry + add r0, r0, #CACHE_DLINESIZE + cmp r0, r1 + blo 1b + mov r0, #0 + mcr p15, 0, r0, c7, c10, 4 @ drain write buffer + mov pc, lr + +/* + * dma_clean_range(start, end) + * + * Clean (write back) the specified virtual address range. + * + * - start - virtual start address + * - end - virtual end address + */ +ENTRY(fa_dma_clean_range) + bic r0, r0, #CACHE_DLINESIZE - 1 +1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry + add r0, r0, #CACHE_DLINESIZE + cmp r0, r1 + blo 1b + mov r0, #0 + mcr p15, 0, r0, c7, c10, 4 @ drain write buffer + mov pc, lr + +/* + * dma_flush_range(start,end) + * - start - virtual start address of region + * - end - virtual end address of region + */ +ENTRY(fa_dma_flush_range) + bic r0, r0, #CACHE_DLINESIZE - 1 +1: mcr p15, 0, r0, c7, c14, 1 @ clean & invalidate D entry + add r0, r0, #CACHE_DLINESIZE + cmp r0, r1 + blo 1b + mov r0, #0 + mcr p15, 0, r0, c7, c10, 4 @ drain write buffer + mov pc, lr + + __INITDATA + + .type fa_cache_fns, #object +ENTRY(fa_cache_fns) + .long fa_flush_kern_cache_all + .long fa_flush_user_cache_all + .long fa_flush_user_cache_range + .long fa_coherent_kern_range + .long fa_coherent_user_range + .long fa_flush_kern_dcache_page + .long fa_dma_inv_range + .long fa_dma_clean_range + .long fa_dma_flush_range + .size fa_cache_fns, . - fa_cache_fns diff --git a/arch/arm/mm/copypage-fa.c b/arch/arm/mm/copypage-fa.c new file mode 100644 index 0000000..b2a6008 --- /dev/null +++ b/arch/arm/mm/copypage-fa.c @@ -0,0 +1,86 @@ +/* + * linux/arch/arm/lib/copypage-fa.S + * + * Copyright (C) 2005 Faraday Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * Based on copypage-v4wb.S: + * Copyright (C) 1995-1999 Russell King + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include <linux/init.h> +#include <linux/highmem.h> + +/* + * Faraday optimised copy_user_page + */ +static void __naked +fa_copy_user_page(void *kto, const void *kfrom) +{ + asm("\ + stmfd sp!, {r4, lr} @ 2\n\ + mov r2, %0 @ 1\n\ +1: ldmia r1!, {r3, r4, ip, lr} @ 4\n\ + stmia r0, {r3, r4, ip, lr} @ 4\n\ + mcr p15, 0, r0, c7, c14, 1 @ 1 clean and invalidate D line\n\ + add r0, r0, #16 @ 1\n\ + ldmia r1!, {r3, r4, ip, lr} @ 4\n\ + stmia r0, {r3, r4, ip, lr} @ 4\n\ + mcr p15, 0, r0, c7, c14, 1 @ 1 clean and invalidate D line\n\ + add r0, r0, #16 @ 1\n\ + subs r2, r2, #1 @ 1\n\ + bne 1b @ 1\n\ + mcr p15, 0, r2, c7, c10, 4 @ 1 drain WB\n\ + ldmfd sp!, {r4, pc} @ 3" + : + : "I" (PAGE_SIZE / 32)); +} + +void fa_copy_user_highpage(struct page *to, struct page *from, + unsigned long vaddr) +{ + void *kto, *kfrom; + + kto = kmap_atomic(to, KM_USER0); + kfrom = kmap_atomic(from, KM_USER1); + fa_copy_user_page(kto, kfrom); + kunmap_atomic(kfrom, KM_USER1); + kunmap_atomic(kto, KM_USER0); +} + +/* + * Faraday optimised clear_user_page + * + * Same story as above. + */ +void fa_clear_user_highpage(struct page *page, unsigned long vaddr) +{ + void *ptr, *kaddr = kmap_atomic(page, KM_USER0); + asm volatile("\ + mov r1, %2 @ 1\n\ + mov r2, #0 @ 1\n\ + mov r3, #0 @ 1\n\ + mov ip, #0 @ 1\n\ + mov lr, #0 @ 1\n\ +1: stmia %0, {r2, r3, ip, lr} @ 4\n\ + mcr p15, 0, %0, c7, c14, 1 @ 1 clean and invalidate D line\n\ + add %0, %0, #16 @ 1\n\ + stmia %0, {r2, r3, ip, lr} @ 4\n\ + mcr p15, 0, %0, c7, c14, 1 @ 1 clean and invalidate D line\n\ + add %0, %0, #16 @ 1\n\ + subs r1, r1, #1 @ 1\n\ + bne 1b @ 1\n\ + mcr p15, 0, r1, c7, c10, 4 @ 1 drain WB" + : "=r" (ptr) + : "0" (kaddr), "I" (PAGE_SIZE / 32) + : "r1", "r2", "r3", "ip", "lr"); + kunmap_atomic(kaddr, KM_USER0); +} + +struct cpu_user_fns fa_user_fns __initdata = { + .cpu_clear_user_highpage = fa_clear_user_highpage, + .cpu_copy_user_highpage = fa_copy_user_highpage, +}; diff --git a/arch/arm/mm/proc-fa526.S b/arch/arm/mm/proc-fa526.S new file mode 100644 index 0000000..08b8a95 --- /dev/null +++ b/arch/arm/mm/proc-fa526.S @@ -0,0 +1,248 @@ +/* + * linux/arch/arm/mm/proc-fa526.S: MMU functions for FA526 + * + * Written by : Luke Lee + * Copyright (C) 2005 Faraday Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * 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. + * + * + * These are the low level assembler for performing cache and TLB + * functions on the fa526. + */ +#include <linux/linkage.h> +#include <linux/init.h> +#include <asm/assembler.h> +#include <asm/hwcap.h> +#include <asm/pgtable-hwdef.h> +#include <asm/pgtable.h> +#include <asm/page.h> +#include <asm/ptrace.h> +#include <asm/system.h> + +#include "proc-macros.S" + +#define CACHE_DLINESIZE 16 + + .text +/* + * cpu_fa526_proc_init() + */ +ENTRY(cpu_fa526_proc_init) + mov pc, lr + +/* + * cpu_fa526_proc_fin() + */ +ENTRY(cpu_fa526_proc_fin) + stmfd sp!, {lr} + mov ip, #PSR_F_BIT | PSR_I_BIT | SVC_MODE + msr cpsr_c, ip + bl fa_flush_kern_cache_all + mrc p15, 0, r0, c1, c0, 0 @ ctrl register + bic r0, r0, #0x1000 @ ...i............ + bic r0, r0, #0x000e @ ............wca. + mcr p15, 0, r0, c1, c0, 0 @ disable caches + nop + nop + ldmfd sp!, {pc} + +/* + * cpu_fa526_reset(loc) + * + * Perform a soft reset of the system. Put the CPU into the + * same state as it would be if it had been reset, and branch + * to what would be the reset vector. + * + * loc: location to jump to for soft reset + */ + .align 4 +ENTRY(cpu_fa526_reset) +/* TODO: Use CP8 if possible... */ + mov ip, #0 + mcr p15, 0, ip, c7, c7, 0 @ invalidate I,D caches + mcr p15, 0, ip, c7, c10, 4 @ drain WB +#ifdef CONFIG_MMU + mcr p15, 0, ip, c8, c7, 0 @ invalidate I & D TLBs +#endif + mrc p15, 0, ip, c1, c0, 0 @ ctrl register + bic ip, ip, #0x000f @ ............wcam + bic ip, ip, #0x1100 @ ...i...s........ + bic ip, ip, #0x0800 @ BTB off + mcr p15, 0, ip, c1, c0, 0 @ ctrl register + nop + nop + mov pc, r0 + +/* + * cpu_fa526_do_idle() + */ + .align 4 +ENTRY(cpu_fa526_do_idle) + mcr p15, 0, r0, c7, c0, 4 @ Wait for interrupt + mov pc, lr + + +ENTRY(cpu_fa526_dcache_clean_area) +1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry + add r0, r0, #CACHE_DLINESIZE + subs r1, r1, #CACHE_DLINESIZE + bhi 1b + mcr p15, 0, r0, c7, c10, 4 @ drain WB + mov pc, lr + +/* =============================== PageTable ============================== */ + +/* + * cpu_fa526_switch_mm(pgd) + * + * Set the translation base pointer to be as described by pgd. + * + * pgd: new page tables + */ + .align 4 +ENTRY(cpu_fa526_switch_mm) +#ifdef CONFIG_MMU + mov ip, #0 +#ifdef CONFIG_CPU_DCACHE_WRITETHROUGH + mcr p15, 0, ip, c7, c6, 0 @ invalidate D cache +#else + mcr p15, 0, ip, c7, c14, 0 @ clean and invalidate whole D cache +#endif + mcr p15, 0, ip, c7, c5, 0 @ invalidate I cache + mcr p15, 0, ip, c7, c5, 6 @ invalidate BTB since mm changed + mcr p15, 0, ip, c7, c10, 4 @ data write barrier + mcr p15, 0, ip, c7, c5, 4 @ prefetch flush + mcr p15, 0, r0, c2, c0, 0 @ load page table pointer + mcr p15, 0, ip, c8, c7, 0 @ invalidate UTLB +#endif + mov pc, lr + +/* + * cpu_fa526_set_pte_ext(ptep, pte, ext) + * + * Set a PTE and flush it out + */ + .align 4 +ENTRY(cpu_fa526_set_pte_ext) +#ifdef CONFIG_MMU + armv3_set_pte_ext + mov r0, r0 + mcr p15, 0, r0, c7, c10, 1 @ clean D entry + mov r0, #0 + mcr p15, 0, r0, c7, c10, 4 @ drain WB +#endif + mov pc, lr + + __INIT + + .type __fa526_setup, #function +__fa526_setup: + /* On return of this routine, r0 must carry correct flags for CFG register */ + mov r0, #0 + mcr p15, 0, r0, c7, c7 @ invalidate I,D caches on v4 + mcr p15, 0, r0, c7, c10, 4 @ drain write buffer on v4 +#ifdef CONFIG_MMU + mcr p15, 0, r0, c8, c7 @ invalidate I,D TLBs on v4 +#endif + mcr p15, 0, r0, c7, c5, 5 @ invalidate IScratchpad RAM + + mov r0, #1 + mcr p15, 0, r0, c1, c1, 0 @ turn-on ECR + + mov r0, #0 + mcr p15, 0, r0, c7, c5, 6 @ invalidate BTB All + mcr p15, 0, r0, c7, c10, 4 @ data write barrier + mcr p15, 0, r0, c7, c5, 4 @ prefetch flush + + mov r0, #0x1f @ Domains 0, 1 = manager, 2 = client + mcr p15, 0, r0, c3, c0 @ load domain access register + + mrc p15, 0, r0, c1, c0 @ get control register v4 + ldr r5, fa526_cr1_clear + bic r0, r0, r5 + ldr r5, fa526_cr1_set + orr r0, r0, r5 + mov pc, lr + .size __fa526_setup, . - __fa526_setup + + /* + * .RVI ZFRS BLDP WCAM + * ..11 1001 .111 1101 + * + */ + .type fa526_cr1_clear, #object + .type fa526_cr1_set, #object +fa526_cr1_clear: + .word 0x3f3f +fa526_cr1_set: + .word 0x397D + + __INITDATA + +/* + * Purpose : Function pointers used to access above functions - all calls + * come through these + */ + .type fa526_processor_functions, #object +fa526_processor_functions: + .word v4_early_abort + .word pabort_noifar + .word cpu_fa526_proc_init + .word cpu_fa526_proc_fin + .word cpu_fa526_reset + .word cpu_fa526_do_idle + .word cpu_fa526_dcache_clean_area + .word cpu_fa526_switch_mm + .word cpu_fa526_set_pte_ext + .size fa526_processor_functions, . - fa526_processor_functions + + .section ".rodata" + + .type cpu_arch_name, #object +cpu_arch_name: + .asciz "armv4" + .size cpu_arch_name, . - cpu_arch_name + + .type cpu_elf_name, #object +cpu_elf_name: + .asciz "v4" + .size cpu_elf_name, . - cpu_elf_name + + .type cpu_fa526_name, #object +cpu_fa526_name: + .asciz "FA526" + .size cpu_fa526_name, . - cpu_fa526_name + + .align + + .section ".proc.info.init", #alloc, #execinstr + + .type __fa526_proc_info,#object +__fa526_proc_info: + .long 0x66015261 + .long 0xff01fff1 + .long PMD_TYPE_SECT | \ + PMD_SECT_BUFFERABLE | \ + PMD_SECT_CACHEABLE | \ + PMD_BIT4 | \ + PMD_SECT_AP_WRITE | \ + PMD_SECT_AP_READ + .long PMD_TYPE_SECT | \ + PMD_BIT4 | \ + PMD_SECT_AP_WRITE | \ + PMD_SECT_AP_READ + b __fa526_setup + .long cpu_arch_name + .long cpu_elf_name + .long HWCAP_SWP | HWCAP_HALF + .long cpu_fa526_name + .long fa526_processor_functions + .long fa_tlb_fns + .long fa_user_fns + .long fa_cache_fns + .size __fa526_proc_info, . - __fa526_proc_info diff --git a/arch/arm/mm/tlb-fa.S b/arch/arm/mm/tlb-fa.S new file mode 100644 index 0000000..9694f1f --- /dev/null +++ b/arch/arm/mm/tlb-fa.S @@ -0,0 +1,75 @@ +/* + * linux/arch/arm/mm/tlb-fa.S + * + * Copyright (C) 2005 Faraday Corp. + * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> + * + * Based on tlb-v4wbi.S: + * Copyright (C) 1997-2002 Russell King + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * ARM architecture version 4, Faraday variation. + * This assume an unified TLBs, with a write buffer, and branch target buffer (BTB) + * + * Processors: FA520 FA526 FA626 + */ +#include <linux/linkage.h> +#include <linux/init.h> +#include <asm/asm-offsets.h> +#include <asm/tlbflush.h> +#include "proc-macros.S" + + +/* + * flush_user_tlb_range(start, end, mm) + * + * Invalidate a range of TLB entries in the specified address space. + * + * - start - range start address + * - end - range end address + * - mm - mm_struct describing address space + */ + .align 4 +ENTRY(fa_flush_user_tlb_range) + vma_vm_mm ip, r2 + act_mm r3 @ get current->active_mm + eors r3, ip, r3 @ == mm ? + movne pc, lr @ no, we dont do anything + mov r3, #0 + mcr p15, 0, r3, c7, c10, 4 @ drain WB + bic r0, r0, #0x0ff + bic r0, r0, #0xf00 +1: mcr p15, 0, r0, c8, c7, 1 @ invalidate UTLB entry + add r0, r0, #PAGE_SZ + cmp r0, r1 + blo 1b + mcr p15, 0, r3, c7, c5, 6 @ invalidate BTB + mcr p15, 0, r3, c7, c10, 4 @ data write barrier + mov pc, lr + + +ENTRY(fa_flush_kern_tlb_range) + mov r3, #0 + mcr p15, 0, r3, c7, c10, 4 @ drain WB + bic r0, r0, #0x0ff + bic r0, r0, #0xf00 +1: mcr p15, 0, r0, c8, c7, 1 @ invalidate UTLB entry + add r0, r0, #PAGE_SZ + cmp r0, r1 + blo 1b + mcr p15, 0, r3, c7, c5, 6 @ invalidate BTB + mcr p15, 0, r3, c7, c10, 4 @ data write barrier + mcr p15, 0, r3, c7, c5, 4 @ prefetch flush + mov pc, lr + + __INITDATA + + .type fa_tlb_fns, #object +ENTRY(fa_tlb_fns) + .long fa_flush_user_tlb_range + .long fa_flush_kern_tlb_range + .long fa_tlb_flags + .size fa_tlb_fns, . - fa_tlb_fns |
