Initial import of modified u-boot tree

Original upstream URL:
git://git.denx.de/u-boot.git

Original upstream GIT hash:
62c175fbb8a0f9a926c88294ea9f7e88eb898f6c

3 files changed, 453 insertions, 0 deletions

diff --git a/board/csb272/Makefile b/board/csb272/Makefile
new file mode 100644
index 0000000..d51e975
--- /dev/null
+++ b/board/csb272/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	= $(obj)lib$(BOARD).o
+
+#COBJS	= $(BOARD).o flash.o
+#COBJS	= $(BOARD).o strataflash.o
+COBJS	= $(BOARD).o
+
+SOBJS	= init.o
+
+SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS))
+SOBJS	:= $(addprefix $(obj),$(SOBJS))
+
+$(LIB):	$(OBJS) $(SOBJS)
+	$(call cmd_link_o_target, $^)
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/board/csb272/csb272.c b/board/csb272/csb272.c
new file mode 100644
index 0000000..8b36127
--- /dev/null
+++ b/board/csb272/csb272.c
@@ -0,0 +1,187 @@
+/*
+ * (C) Copyright 2004
+ * Tolunay Orkun, Nextio Inc., torkun@nextio.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 <asm/processor.h>
+#include <i2c.h>
+#include <miiphy.h>
+#include <asm/ppc4xx-emac.h>
+
+void sdram_init(void);
+
+/*
+ * Configuration data for AMIS FS6377-01 Programmable 3-PLL Clock Generator
+ *
+ * CLKA output => Epson LCD Controller
+ * CLKB output => Not Connected
+ * CLKC output => Ethernet
+ * CLKD output => UART external clock
+ *
+ * Note: these values are obtained from device after init by micromonitor
+*/
+uchar pll_fs6377_regs[16] = {
+	0x28, 0xef, 0x53, 0x03, 0x4b, 0x80, 0x32, 0x80,
+	0x94, 0x32, 0x80, 0xd4, 0x56, 0xf6, 0xf6, 0xe0 };
+
+/*
+ * pll_init: Initialize AMIS IC FS6377-01 PLL
+ *
+ * PLL supplies Epson LCD Clock, Ethernet Clock and UART external clock
+ *
+ */
+int pll_init(void)
+{
+	i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
+
+	return  i2c_write(CONFIG_SYS_I2C_PLL_ADDR, 0, 1,
+		(uchar *) pll_fs6377_regs, sizeof(pll_fs6377_regs));
+}
+
+/*
+ * board_early_init_f: do early board initialization
+ *
+ */
+int board_early_init_f(void)
+{
+	/* initialize PLL so UART, LCD, Ethernet clocked at correctly */
+	(void) get_clocks();
+	pll_init();
+
+   /*-------------------------------------------------------------------------+
+   | Interrupt controller setup for the Walnut board.
+   | Note: IRQ 0-15  405GP internally generated; active high; level sensitive
+   |       IRQ 16    405GP internally generated; active low; level sensitive
+   |       IRQ 17-24 RESERVED
+   |       IRQ 25 (EXT IRQ 0) FPGA; active high; level sensitive
+   |       IRQ 26 (EXT IRQ 1) SMI; active high; level sensitive
+   |       IRQ 27 (EXT IRQ 2) Not Used
+   |       IRQ 28 (EXT IRQ 3) PCI SLOT 3; active low; level sensitive
+   |       IRQ 29 (EXT IRQ 4) PCI SLOT 2; active low; level sensitive
+   |       IRQ 30 (EXT IRQ 5) PCI SLOT 1; active low; level sensitive
+   |       IRQ 31 (EXT IRQ 6) PCI SLOT 0; active low; level sensitive
+   | Note for Walnut board:
+   |       An interrupt taken for the FPGA (IRQ 25) indicates that either
+   |       the Mouse, Keyboard, IRDA, or External Expansion caused the
+   |       interrupt. The FPGA must be read to determine which device
+   |       caused the interrupt. The default setting of the FPGA clears
+   |
+   +-------------------------------------------------------------------------*/
+
+	mtdcr (UIC0SR, 0xFFFFFFFF);   /* clear all ints */
+	mtdcr (UIC0ER, 0x00000000);   /* disable all ints */
+	mtdcr (UIC0CR, 0x00000000);   /* set all to be non-critical */
+	mtdcr (UIC0PR, 0xFFFFFF83);   /* set int polarities */
+	mtdcr (UIC0TR, 0x10000000);   /* set int trigger levels */
+	mtdcr (UIC0VCR, 0x00000001);  /* set vect base=0,INT0 highest priority */
+	mtdcr (UIC0SR, 0xFFFFFFFF);   /* clear all ints */
+
+	mtebc (EBC0_CFG, 0xa8400000);   /* EBC always driven */
+
+	return 0; /* success */
+}
+
+/*
+ * checkboard: identify/verify the board we are running
+ *
+ * Remark: we just assume it is correct board here!
+ *
+ */
+int checkboard(void)
+{
+	printf("BOARD: Cogent CSB272\n");
+
+	return 0; /* success */
+}
+
+/*
+ * initram: Determine the size of mounted DRAM
+ *
+ * Size is determined by reading SDRAM configuration registers as
+ * configured by initialization code
+ *
+ */
+phys_size_t initdram (int board_type)
+{
+	ulong tot_size;
+	ulong bank_size;
+	ulong tmp;
+
+	/*
+	 * ToDo: Move the asm init routine sdram_init() to this C file,
+	 * or even better use some common ppc4xx code available
+	 * in arch/powerpc/cpu/ppc4xx
+	 */
+	sdram_init();
+
+	tot_size = 0;
+
+	mtdcr (SDRAM0_CFGADDR, SDRAM0_B0CR);
+	tmp = mfdcr (SDRAM0_CFGDATA);
+	if (tmp & 0x00000001) {
+		bank_size = 0x00400000 << ((tmp >> 17) & 0x7);
+		tot_size += bank_size;
+	}
+
+	mtdcr (SDRAM0_CFGADDR, SDRAM0_B1CR);
+	tmp = mfdcr (SDRAM0_CFGDATA);
+	if (tmp & 0x00000001) {
+		bank_size = 0x00400000 << ((tmp >> 17) & 0x7);
+		tot_size += bank_size;
+	}
+
+	mtdcr (SDRAM0_CFGADDR, SDRAM0_B2CR);
+	tmp = mfdcr (SDRAM0_CFGDATA);
+	if (tmp & 0x00000001) {
+		bank_size = 0x00400000 << ((tmp >> 17) & 0x7);
+		tot_size += bank_size;
+	}
+
+	mtdcr (SDRAM0_CFGADDR, SDRAM0_B3CR);
+	tmp = mfdcr (SDRAM0_CFGDATA);
+	if (tmp & 0x00000001) {
+		bank_size = 0x00400000 << ((tmp >> 17) & 0x7);
+		tot_size += bank_size;
+	}
+
+	return tot_size;
+}
+
+/*
+ * last_stage_init: final configurations (such as PHY etc)
+ *
+ */
+int last_stage_init(void)
+{
+	/* initialize the PHY */
+	miiphy_reset("ppc_4xx_eth0", CONFIG_PHY_ADDR);
+
+	/* AUTO neg */
+	miiphy_write("ppc_4xx_eth0", CONFIG_PHY_ADDR, MII_BMCR,
+			BMCR_ANENABLE | BMCR_ANRESTART);
+
+	/* LEDs     */
+	miiphy_write("ppc_4xx_eth0", CONFIG_PHY_ADDR, MII_NWAYTEST, 0x0d08);
+
+
+	return 0; /* success */
+}
diff --git a/board/csb272/init.S b/board/csb272/init.S
new file mode 100644
index 0000000..82c6fdb
--- /dev/null
+++ b/board/csb272/init.S
@@ -0,0 +1,218 @@
+/******************************************************************************
+ *   This source code is dual-licensed.  You may use it under the terms of the
+ *   GNU General Public License version 2, or under the license below.
+ *
+ *	 This source code has been made available to you by IBM on an AS-IS
+ *	 basis.	 Anyone receiving this source is licensed under IBM
+ *	 copyrights to use it in any way he or she deems fit, including
+ *	 copying it, modifying it, compiling it, and redistributing it either
+ *	 with or without modifications.	 No license under IBM patents or
+ *	 patent applications is to be implied by the copyright license.
+ *
+ *	 Any user of this software should understand that IBM cannot provide
+ *	 technical support for this software and will not be responsible for
+ *	 any consequences resulting from the use of this software.
+ *
+ *	 Any person who transfers this source code or any derivative work
+ *	 must include the IBM copyright notice, this paragraph, and the
+ *	 preceding two paragraphs in the transferred software.
+ *
+ *	 COPYRIGHT   I B M   CORPORATION 1995
+ *	 LICENSED MATERIAL  -  PROGRAM PROPERTY OF I B M
+ *
+ *****************************************************************************/
+#include <config.h>
+#include <asm/ppc4xx.h>
+
+#define _LINUX_CONFIG_H 1	/* avoid reading Linux autoconf.h file	*/
+
+#include <ppc_asm.tmpl>
+#include <ppc_defs.h>
+
+#include <asm/cache.h>
+#include <asm/mmu.h>
+
+#define LI32(reg,val) \
+	addis   reg,0,val@h;\
+	ori     reg,reg,val@l
+
+#define WDCR_EBC(reg,val) \
+	addi    r4,0,reg;\
+	mtdcr   EBC0_CFGADDR,r4;\
+	addis   r4,0,val@h;\
+	ori     r4,r4,val@l;\
+	mtdcr   EBC0_CFGDATA,r4
+
+#define WDCR_SDRAM(reg,val) \
+	addi    r4,0,reg;\
+	mtdcr   SDRAM0_CFGADDR,r4;\
+	addis   r4,0,val@h;\
+	ori     r4,r4,val@l;\
+	mtdcr   SDRAM0_CFGDATA,r4
+
+/******************************************************************************
+ * Function:	ext_bus_cntlr_init
+ *
+ * Description:	Configures EBC Controller and a few basic chip selects.
+ *
+ *		CS0 is setup to get the Boot Flash out of the addresss range
+ *		so that we may setup a stack.  CS7 is setup so that we can
+ *		access and reset the hardware watchdog.
+ *
+ *		IMPORTANT: For pass1 this code must run from
+ *		cache since you can not reliably change a peripheral banks
+ *		timing register (pbxap) while running code from that bank.
+ *		For ex., since we are running from ROM on bank 0, we can NOT
+ *		execute the code that modifies bank 0 timings from ROM, so
+ *		we run it from cache.
+ *
+ * Notes:	Does NOT use the stack.
+ *****************************************************************************/
+	.section ".text"
+	.align	2
+	.globl	ext_bus_cntlr_init
+	.type	ext_bus_cntlr_init, @function
+ext_bus_cntlr_init:
+	mflr	r0
+	/********************************************************************
+	 * Prefetch entire ext_bus_cntrl_init function into the icache.
+	 * This is necessary because we are going to change the same CS we
+	 * are executing from.  Otherwise a CPU lockup may occur.
+	 *******************************************************************/
+	bl	..getAddr
+..getAddr:
+	mflr	r3			/* get address of ..getAddr */
+
+	/* Calculate number of cache lines for this function */
+	addi	r4, 0, (((.Lfe0 - ..getAddr) / CONFIG_SYS_CACHELINE_SIZE) + 2)
+	mtctr	r4
+..ebcloop:
+	icbt	r0, r3			/* prefetch cache line for addr in r3*/
+	addi	r3, r3, CONFIG_SYS_CACHELINE_SIZE /* move to next cache line */
+	bdnz	..ebcloop		/* continue for $CTR cache lines */
+
+	/********************************************************************
+	 * Delay to ensure all accesses to ROM are complete before changing
+	 * bank 0 timings. 200usec should be enough.
+	 * 200,000,000 (cycles/sec) X .000200 (sec) = 0x9C40 cycles.
+	 *******************************************************************/
+	addis	r3, 0, 0x0
+	ori	r3, r3, 0xA000		/* wait 200us from reset */
+	mtctr	r3
+..spinlp:
+	bdnz	..spinlp		/* spin loop */
+
+	/********************************************************************
+	 * SETUP CPC0_CR0
+	 *******************************************************************/
+	LI32(r4, 0x007000c0)
+	mtdcr	CPC0_CR0, r4
+
+	/********************************************************************
+	 * Setup CPC0_CR1: Change PCIINT signal to PerWE
+	 *******************************************************************/
+	mfdcr	r4, CPC0_CR1
+	ori	r4, r4, 0x4000
+	mtdcr	CPC0_CR1, r4
+
+	/********************************************************************
+	 * Setup External Bus Controller (EBC).
+	 *******************************************************************/
+	WDCR_EBC(EBC0_CFG, 0xd84c0000)
+	/********************************************************************
+	 * Memory Bank 0 (Intel 28F128J3 Flash) initialization
+	 *******************************************************************/
+	/*WDCR_EBC(PB1AP, 0x02869200)*/
+	WDCR_EBC(PB1AP, 0x07869200)
+	WDCR_EBC(PB0CR, 0xfe0bc000)
+	/********************************************************************
+	 * Memory Bank 1 (Holtek HT6542B PS/2) initialization
+	 *******************************************************************/
+	WDCR_EBC(PB1AP, 0x1f869200)
+	WDCR_EBC(PB1CR, 0xf0818000)
+	/********************************************************************
+	 * Memory Bank 2 (Epson S1D13506) initialization
+	 *******************************************************************/
+	WDCR_EBC(PB2AP, 0x05860300)
+	WDCR_EBC(PB2CR, 0xf045a000)
+	/********************************************************************
+	 * Memory Bank 3 (Philips SJA1000 CAN Controllers) initialization
+	 *******************************************************************/
+	WDCR_EBC(PB3AP, 0x0387d200)
+	WDCR_EBC(PB3CR, 0xf021c000)
+	/********************************************************************
+	 * Memory Bank 4-7 (Unused) initialization
+	 *******************************************************************/
+	WDCR_EBC(PB4AP, 0)
+	WDCR_EBC(PB4CR, 0)
+	WDCR_EBC(PB5AP, 0)
+	WDCR_EBC(PB5CR, 0)
+	WDCR_EBC(PB6AP, 0)
+	WDCR_EBC(PB6CR, 0)
+	WDCR_EBC(PB7AP, 0)
+	WDCR_EBC(PB7CR, 0)
+
+	/* We are all done */
+	mtlr	r0			/* Restore link register */
+	blr				/* Return to calling function */
+.Lfe0:	.size	ext_bus_cntlr_init,.Lfe0-ext_bus_cntlr_init
+/* end ext_bus_cntlr_init() */
+
+/******************************************************************************
+ * Function:	sdram_init
+ *
+ * Description:	Configures SDRAM memory banks.
+ *
+ * Notes:	Does NOT use the stack.
+ *****************************************************************************/
+	.section ".text"
+	.align	2
+	.globl	sdram_init
+	.type	sdram_init, @function
+sdram_init:
+
+	/*
+	 * Disable memory controller to allow
+	 * values to be changed.
+	 */
+	WDCR_SDRAM(SDRAM0_CFG, 0x00000000)
+
+	/*
+	 * Configure Memory Banks
+	 */
+	WDCR_SDRAM(SDRAM0_B0CR, 0x00084001)
+	WDCR_SDRAM(SDRAM0_B1CR, 0x00000000)
+	WDCR_SDRAM(SDRAM0_B2CR, 0x00000000)
+	WDCR_SDRAM(SDRAM0_B3CR, 0x00000000)
+
+	/*
+	 * Set up SDTR1 (SDRAM Timing Register)
+	 */
+	WDCR_SDRAM(SDRAM0_TR, 0x00854009)
+
+	/*
+	 * Set RTR (Refresh Timing Register)
+	 */
+	WDCR_SDRAM(SDRAM0_RTR,   0x10000000)
+	/* WDCR_SDRAM(SDRAM0_RTR,   0x05f00000) */
+
+	/********************************************************************
+	 * Delay to ensure 200usec have elapsed since reset. Assume worst
+	 * case that the core is running 200Mhz:
+	 *	  200,000,000 (cycles/sec) X .000200 (sec) = 0x9C40 cycles
+	 *******************************************************************/
+	addis   r3, 0, 0x0000
+	ori     r3, r3, 0xA000		/* Wait >200us from reset */
+	mtctr   r3
+..spinlp2:
+	bdnz    ..spinlp2		/* spin loop */
+
+	/********************************************************************
+	 * Set memory controller options reg, MCOPT1.
+	 *******************************************************************/
+	WDCR_SDRAM(SDRAM0_CFG,0x80800000)
+
+..sdri_done:
+	blr				/* Return to calling function */
+.Lfe1:	.size	sdram_init,.Lfe1-sdram_init
+/* end sdram_init() */