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| author | Tom Rini <trini@ti.com> | 2013-03-18 12:31:00 -0400 | 
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2013-03-18 14:37:18 -0400 | 
| commit | 0ce033d2582129243aca10d3072a221386bbba44 (patch) | |
| tree | 6e50a3f4eed22007549dc740d0fa647a6c8cec5b /board/ns9750dev/lowlevel_init.S | |
| parent | b5bec88434adb52413f1bc33fa63d7642cb8fd35 (diff) | |
| parent | b27673ccbd3d5435319b5c09c3e7061f559f925d (diff) | |
| download | olio-uboot-2014.01-0ce033d2582129243aca10d3072a221386bbba44.tar.xz olio-uboot-2014.01-0ce033d2582129243aca10d3072a221386bbba44.zip | |
Merge branch 'master' of git://git.denx.de/u-boot-arm
Albert's rework of the linker scripts conflicted with Simon's making
everyone use __bss_end.  We also had a minor conflict over
README.scrapyard being added to in mainline and enhanced in
u-boot-arm/master with proper formatting.
Conflicts:
	arch/arm/cpu/ixp/u-boot.lds
	arch/arm/cpu/u-boot.lds
	arch/arm/lib/Makefile
	board/actux1/u-boot.lds
	board/actux2/u-boot.lds
	board/actux3/u-boot.lds
	board/dvlhost/u-boot.lds
	board/freescale/mx31ads/u-boot.lds
	doc/README.scrapyard
	include/configs/tegra-common.h
Build tested for all of ARM and run-time tested on am335x_evm.
Signed-off-by: Tom Rini <trini@ti.com>
Diffstat (limited to 'board/ns9750dev/lowlevel_init.S')
| -rw-r--r-- | board/ns9750dev/lowlevel_init.S | 298 | 
1 files changed, 0 insertions, 298 deletions
| diff --git a/board/ns9750dev/lowlevel_init.S b/board/ns9750dev/lowlevel_init.S deleted file mode 100644 index ba5ff8124..000000000 --- a/board/ns9750dev/lowlevel_init.S +++ /dev/null @@ -1,298 +0,0 @@ -/* - * Board specific setup info - * - * (C) Copyright 2003 - * Texas Instruments, <www.ti.com> - * Kshitij Gupta <Kshitij@ti.com> - * - * Modified for the NS9750 DevBoard by - * (C) Copyright 2004 by FS Forth-Systeme GmbH. - * Markus Pietrek <mpietrek@fsforth.de> - * @References: [1] NS9750 Hardware Reference/December 2003 - *	        [2] ns9750_a.cmd from MAJIC configuration - * - * 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 <version.h> - -#if defined(CONFIG_NS9750DEV) -# ifndef CONFIG_SKIP_LOWLEVEL_INIT -#  include <./ns9750_sys.h> -#  include <./ns9750_mem.h> -# endif -#endif - -/*********************************************************************** - * @Function: write_register_block - * @Return: nothing - * @Descr: Copies the register block of register_offset:register value to - *         the registers at base r0. The block is assumed to start in RAM at r1 - *         and end at r2. The linked RAM base address of U-Boot is assumed to be - *	   in r5 while the ROM base address we are running from is r6 - *         Uses r3 and r4 as tempory registers - ***********************************************************************/ - -.macro	write_register_block -	@@ map the addresses to high memory -	sub	r1, r1, r5 -	add	r1, r1, r6 -	sub	r2, r2, r5 -	add	r2, r2, r6 - -	@@ copy all -1: -	@@ Write register/value pair starting at [r1] to register base r0 -	ldr	r3, [r1], #4 -	ldr	r4, [r1], #4 -	str	r4, [r0,r3] -	cmp	r1, r2 -	blt	1b -.endm - -_TEXT_BASE: -	.word	CONFIG_SYS_TEXT_BASE	@ sdram load addr from config.mk -_PHYS_FLASH: -	.word	PHYS_FLASH_1    @ real flash address (without mirroring) -_CAS_LATENCY: -	.word	0x00022000	@ for CAS2 latency - -#ifndef CONFIG_SKIP_LOWLEVEL_INIT -.globl lowlevel_init -lowlevel_init: - -	/* U-Boot may be linked to RAM at 0x780000. But this code will run in -	   flash from 0x0. But in order to enable RAM we have to disable the -	   mirror bit, therefore we have to jump to our real flash address -	   beginning at PHYS_FLASH_1 (CS4 Base). Therefore, -	   _run_at_real_flash_address may be 0x500003b0 while be linked to -	   0x7803b0. So we must modify our linked addresses */ - -	@@ branch to high memory address, away from 0x0 -	ldr	r5, _TEXT_BASE -	ldr	r6, _PHYS_FLASH -	ldr	r0, =_run_at_real_flash_address -	sub	r0, r0, r5 -	add	r0, r0, r6 -	mov	pc, r0 -	nop			@ for pipelining - -_run_at_real_flash_address: -	@@ now we are running > PHYS_FLASH_1, safe to enable memory controller - -	@@ Write Memory Configuration Registers - -	ldr	r0, _NS9750_MEM_MODULE_BASE -	ldr	r1, =_MEM_CONFIG_START -	ldr	r2, =_MEM_CONFIG_END - -	write_register_block - -	@@ Give SDRAM some time to settle -	@@ @TODO. According to [2] it should be 2 AHB cycles. Check - -	ldr	r1, =0x50 -_sdram_settle: -	subs	r1, r1, #1 -	bne	_sdram_settle - -_enable_mappings: -	@@ Enable SDRAM Mode - -	ldr	r1, =_MEM_MODE_START -	ldr	r2, =_MEM_MODE_END - -	write_register_block - -	ldr	r3, _CAS_LATENCY @ perform one read from SDRAM -	ldr	r3, [r3] - -	@@ Enable SDRAM and memory mappings - -	ldr	r1, =_MEM_ENABLE_START -	ldr	r2, =_MEM_ENABLE_END - -	write_register_block - -	@@ Activate AHB monitor - -	ldr	r0, =NS9750_SYS_MODULE_BASE -	ldr	r1, =_AHB_MONITOR_START -	ldr	r2, =_AHB_MONITOR_END - -	write_register_block -_relocate_lr: -	/* lr and ip (from cpu_init_crit) are still based on 0x0, relocate it to -	   PHYS_FLASH. */ -	mov	r1, ip -	add	r1, r1, r6 -	mov	ip, r1 - -	mov	r1, lr -	add	r1, r1, r6 -	mov	lr, r1 - -	@@ back to arch calling code -	mov	pc,	lr - -	.ltorg - -_NS9750_MEM_MODULE_BASE: -	.word	NS9750_MEM_MODULE_BASE - -_MEM_CONFIG_START: -	/* Table of 2 32bit entries. First word is register address offset -	   relative to NS9750_MEM_MODULE_BASE, second one is value. They are -	   written in order of appearance */ - -	@@ Register values taken from [2] -	.word	NS9750_MEM_CTRL -	.word	NS9750_MEM_CTRL_E - -	.word	NS9750_MEM_DYN_REFRESH -	.word	(0x6 & NS9750_MEM_DYN_REFRESH_MA) - -	.word	NS9750_MEM_DYN_READ_CFG -	.word	(0x1 & NS9750_MEM_DYN_READ_CFG_MA) - -	.word	NS9750_MEM_DYN_TRP -	.word	(0x1 & NS9750_MEM_DYN_TRP_MA) - -	.word	NS9750_MEM_DYN_TRAS -	.word	(0x4 & NS9750_MEM_DYN_TRAS_MA) - -	.word	NS9750_MEM_DYN_TAPR -	.word	(0x1 & NS9750_MEM_DYN_TRAS_MA) - -	.word	NS9750_MEM_DYN_TDAL -	.word	(0x5 & NS9750_MEM_DYN_TDAL_MA) - -	.word	NS9750_MEM_DYN_TWR -	.word	(0x1 & NS9750_MEM_DYN_TWR_MA) - -	.word	NS9750_MEM_DYN_TRC -	.word	(0x6 & NS9750_MEM_DYN_TRC_MA) - -	.word	NS9750_MEM_DYN_TRFC -	.word	(0x6 & NS9750_MEM_DYN_TRFC_MA) - -	.word	NS9750_MEM_DYN_TRRD -	.word	(0x1 & NS9750_MEM_DYN_TRRD_MA) - -	.word	NS9750_MEM_DYN_TMRD -	.word	(0x1 & NS9750_MEM_DYN_TMRD_MA) - -	@@ CS 4 -	.word	NS9750_MEM_DYN_CFG(0) -	.word	(NS9750_MEM_DYN_CFG_AM | \ -		 (0x280 & NS9750_MEM_DYN_CFG_AM_MA)) - -	.word	NS9750_MEM_DYN_RAS_CAS(0) -	.word	((0x200 & NS9750_MEM_DYN_RAS_CAS_CAS_MA) | \ -		 (0x03 & NS9750_MEM_DYN_RAS_CAS_RAS_MA)) - -	@@ CS 5 -	.word	NS9750_MEM_DYN_CFG(1) -	.word	(NS9750_MEM_DYN_CFG_AM | \ -		 (0x280 & NS9750_MEM_DYN_CFG_AM_MA)) - -	.word	NS9750_MEM_DYN_RAS_CAS(1) -	.word	((0x200 & NS9750_MEM_DYN_RAS_CAS_CAS_MA) | \ -		 (0x03 & NS9750_MEM_DYN_RAS_CAS_RAS_MA)) - -	@@ CS 6 -	.word	NS9750_MEM_DYN_CFG(2) -	.word	(NS9750_MEM_DYN_CFG_AM | \ -		 (0x280 & NS9750_MEM_DYN_CFG_AM_MA)) - -	.word	NS9750_MEM_DYN_RAS_CAS(2) -	.word	((0x200 & NS9750_MEM_DYN_RAS_CAS_CAS_MA) | \ -		 (0x03 & NS9750_MEM_DYN_RAS_CAS_RAS_MA)) - -	@@ CS 7 -	.word	NS9750_MEM_DYN_CFG(3) -	.word	(NS9750_MEM_DYN_CFG_AM | \ -		 (0x280 & NS9750_MEM_DYN_CFG_AM_MA)) - -	.word	NS9750_MEM_DYN_RAS_CAS(3) -	.word	((0x200 & NS9750_MEM_DYN_RAS_CAS_CAS_MA) | \ -		 (0x03 & NS9750_MEM_DYN_RAS_CAS_RAS_MA)) - -	.word	NS9750_MEM_DYN_CTRL -	.word	(NS9750_MEM_DYN_CTRL_I_PALL | \ -		 NS9750_MEM_DYN_CTRL_SR | \ -		 NS9750_MEM_DYN_CTRL_CE ) - -	.word	NS9750_MEM_DYN_REFRESH -	.word	(0x1 & NS9750_MEM_DYN_REFRESH_MA) -	@@ No further register settings after refresh -_MEM_CONFIG_END: - -_MEM_MODE_START: -	.word	NS9750_MEM_DYN_REFRESH -	.word	(0x30 & NS9750_MEM_DYN_REFRESH_MA) - -	.word	NS9750_MEM_DYN_CTRL -	.word	(NS9750_MEM_DYN_CTRL_I_MODE | \ -		 NS9750_MEM_DYN_CTRL_SR | \ -		 NS9750_MEM_DYN_CTRL_CE ) -_MEM_MODE_END: - -_MEM_ENABLE_START: -	.word	NS9750_MEM_DYN_CTRL -	.word	(NS9750_MEM_DYN_CTRL_I_NORMAL | \ -		 NS9750_MEM_DYN_CTRL_SR | \ -		 NS9750_MEM_DYN_CTRL_CE ) - -	@@ CS 4 -	.word	NS9750_MEM_DYN_CFG(0) -	.word	(NS9750_MEM_DYN_CFG_BDMC | \ -		 NS9750_MEM_DYN_CFG_AM | \ -		 (0x280 & NS9750_MEM_DYN_CFG_AM_MA)) - -	@@ CS 5 -	.word	NS9750_MEM_DYN_CFG(1) -	.word	(NS9750_MEM_DYN_CFG_BDMC | \ -		 NS9750_MEM_DYN_CFG_AM | \ -		 (0x280 & NS9750_MEM_DYN_CFG_AM_MA)) - -	@@ CS 6 -	.word	NS9750_MEM_DYN_CFG(2) -	.word	(NS9750_MEM_DYN_CFG_BDMC | \ -		 NS9750_MEM_DYN_CFG_AM | \ -		 (0x280 & NS9750_MEM_DYN_CFG_AM_MA)) - -	@@ CS 7 -	.word	NS9750_MEM_DYN_CFG(3) -	.word	(NS9750_MEM_DYN_CFG_BDMC | \ -		 NS9750_MEM_DYN_CFG_AM | \ -		 (0x280 & NS9750_MEM_DYN_CFG_AM_MA)) -_MEM_ENABLE_END: - -_AHB_MONITOR_START: -	.word	NS9750_SYS_AHB_TIMEOUT -	.word	0x01000100	@ @TODO not calculated yet - -	.word	NS9750_SYS_AHB_MON -	.word	(NS9750_SYS_AHB_MON_BMTC_GEN_IRQ | \ -		 NS9750_SYS_AHB_MON_BATC_GEN_IRQ) -_AHB_MONITOR_END: - -#endif /* CONFIG_SKIP_LOWLEVEL_INIT */ |