mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-02 16:23:46 +09:00
25ddd1fb0a
CONFIG_SYS_GBL_DATA_SIZE has always been just a bad workarond for not being able to use "sizeof(struct global_data)" in assembler files. Recent experience has shown that manual synchronization is not reliable enough. This patch renames CONFIG_SYS_GBL_DATA_SIZE into GENERATED_GBL_DATA_SIZE which gets automatically generated by the asm-offsets tool. In the result, all definitions of this value can be deleted from the board config files. We have to make sure that all files that reference such data include the new <asm-offsets.h> file. No other changes have been done yet, but it is obvious that similar changes / simplifications can be done for other, related macro definitions as well. Signed-off-by: Wolfgang Denk <wd@denx.de> Acked-by: Kumar Gala <galak@kernel.crashing.org>
337 lines
9.9 KiB
ArmAsm
337 lines
9.9 KiB
ArmAsm
/*
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* Copyright (C) 2003 Josef Baumgartner <josef.baumgartner@telex.de>
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* Based on code from Bernhard Kuhn <bkuhn@metrowerks.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <asm-offsets.h>
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#include <config.h>
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#include <timestamp.h>
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#include "version.h"
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#include <asm/cache.h>
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#ifndef CONFIG_IDENT_STRING
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#define CONFIG_IDENT_STRING ""
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#endif
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#define _START _start
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#define _FAULT _fault
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#define SAVE_ALL \
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move.w #0x2700,%sr; /* disable intrs */ \
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subl #60,%sp; /* space for 15 regs */ \
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moveml %d0-%d7/%a0-%a6,%sp@; \
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#define RESTORE_ALL \
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moveml %sp@,%d0-%d7/%a0-%a6; \
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addl #60,%sp; /* space for 15 regs */ \
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rte
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/* If we come from a pre-loader we don't need an initial exception
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* table.
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*/
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#if !defined(CONFIG_MONITOR_IS_IN_RAM)
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.text
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/*
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* Vector table. This is used for initial platform startup.
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* These vectors are to catch any un-intended traps.
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*/
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_vectors:
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.long 0x00000000 /* Flash offset is 0 until we setup CS0 */
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#if defined(CONFIG_M5282) && (CONFIG_SYS_TEXT_BASE == CONFIG_SYS_INT_FLASH_BASE)
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.long _start - CONFIG_SYS_TEXT_BASE
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#else
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.long _START
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#endif
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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#endif
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.text
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#if defined(CONFIG_SYS_INT_FLASH_BASE) && \
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(defined(CONFIG_M5282) || defined(CONFIG_M5281))
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#if (CONFIG_SYS_TEXT_BASE == CONFIG_SYS_INT_FLASH_BASE)
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.long 0x55AA55AA,0xAA55AA55 /* CFM Backdoorkey */
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.long 0xFFFFFFFF /* all sectors protected */
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.long 0x00000000 /* supervisor/User restriction */
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.long 0x00000000 /* programm/data space restriction */
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.long 0x00000000 /* Flash security */
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#endif
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#endif
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.globl _start
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_start:
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nop
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nop
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move.w #0x2700,%sr
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#if defined(CONFIG_M5208)
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/* Initialize RAMBAR: locate SRAM and validate it */
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move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_CTRL), %d0
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movec %d0, %RAMBAR1
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#endif
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#if defined(CONFIG_M5272) || defined(CONFIG_M5249) || defined(CONFIG_M5253)
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move.l #(CONFIG_SYS_MBAR + 1), %d0 /* set MBAR address + valid flag */
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move.c %d0, %MBAR
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/*** The 5249 has MBAR2 as well ***/
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#ifdef CONFIG_SYS_MBAR2
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move.l #(CONFIG_SYS_MBAR2 + 1), %d0 /* Get MBAR2 address */
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movec %d0, #0xc0e /* Set MBAR2 */
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#endif
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move.l #(CONFIG_SYS_INIT_RAM_ADDR + 1), %d0
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movec %d0, %RAMBAR0
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#endif /* CONFIG_M5272 || CONFIG_M5249 || CONFIG_M5253 */
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#if defined(CONFIG_M5282) || defined(CONFIG_M5271)
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/* Initialize IPSBAR */
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move.l #(CONFIG_SYS_MBAR + 1), %d0 /* set IPSBAR address + valid flag */
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move.l %d0, 0x40000000
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/* Initialize RAMBAR1: locate SRAM and validate it */
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move.l #(CONFIG_SYS_INIT_RAM_ADDR + 0x21), %d0
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movec %d0, %RAMBAR1
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#if defined(CONFIG_M5282)
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#if (CONFIG_SYS_TEXT_BASE == CONFIG_SYS_INT_FLASH_BASE)
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/* Setup code in SRAM to initialize FLASHBAR, if start from internal Flash */
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move.l #(_flashbar_setup-CONFIG_SYS_INT_FLASH_BASE), %a0
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move.l #(_flashbar_setup_end-CONFIG_SYS_INT_FLASH_BASE), %a1
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move.l #(CONFIG_SYS_INIT_RAM_ADDR), %a2
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_copy_flash:
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move.l (%a0)+, (%a2)+
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cmp.l %a0, %a1
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bgt.s _copy_flash
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jmp CONFIG_SYS_INIT_RAM_ADDR
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_flashbar_setup:
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/* Initialize FLASHBAR: locate internal Flash and validate it */
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move.l #(CONFIG_SYS_INT_FLASH_BASE + CONFIG_SYS_INT_FLASH_ENABLE), %d0
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movec %d0, %FLASHBAR
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jmp _after_flashbar_copy.L /* Force jump to absolute address */
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_flashbar_setup_end:
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nop
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_after_flashbar_copy:
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#else
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/* Setup code to initialize FLASHBAR, if start from external Memory */
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move.l #(CONFIG_SYS_INT_FLASH_BASE + CONFIG_SYS_INT_FLASH_ENABLE), %d0
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movec %d0, %FLASHBAR
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#endif /* (CONFIG_SYS_TEXT_BASE == CONFIG_SYS_INT_FLASH_BASE) */
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#endif
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#endif
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/* if we come from a pre-loader we have no exception table and
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* therefore no VBR to set
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*/
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#if !defined(CONFIG_MONITOR_IS_IN_RAM)
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#if defined(CONFIG_M5282) && (CONFIG_SYS_TEXT_BASE == CONFIG_SYS_INT_FLASH_BASE)
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move.l #CONFIG_SYS_INT_FLASH_BASE, %d0
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#else
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move.l #CONFIG_SYS_FLASH_BASE, %d0
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#endif
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movec %d0, %VBR
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#endif
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#ifdef CONFIG_M5275
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/* Initialize IPSBAR */
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move.l #(CONFIG_SYS_MBAR + 1), %d0 /* set IPSBAR address + valid flag */
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move.l %d0, 0x40000000
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/* movec %d0, %MBAR */
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/* Initialize RAMBAR: locate SRAM and validate it */
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move.l #(CONFIG_SYS_INIT_RAM_ADDR + 0x21), %d0
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movec %d0, %RAMBAR1
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#endif
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/* initialize general use internal ram */
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move.l #0, %d0
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move.l #(ICACHE_STATUS), %a1 /* icache */
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move.l #(DCACHE_STATUS), %a2 /* icache */
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move.l %d0, (%a1)
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move.l %d0, (%a2)
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/* set stackpointer to end of internal ram to get some stackspace for the first c-code */
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move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET), %sp
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clr.l %sp@-
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move.l #__got_start, %a5 /* put relocation table address to a5 */
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bsr cpu_init_f /* run low-level CPU init code (from flash) */
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bsr board_init_f /* run low-level board init code (from flash) */
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/* board_init_f() does not return */
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/*------------------------------------------------------------------------------*/
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/*
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* void relocate_code (addr_sp, gd, addr_moni)
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*
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* This "function" does not return, instead it continues in RAM
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* after relocating the monitor code.
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*
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* r3 = dest
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* r4 = src
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* r5 = length in bytes
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* r6 = cachelinesize
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*/
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.globl relocate_code
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relocate_code:
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link.w %a6,#0
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move.l 8(%a6), %sp /* set new stack pointer */
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move.l 12(%a6), %d0 /* Save copy of Global Data pointer */
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move.l 16(%a6), %a0 /* Save copy of Destination Address */
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move.l #CONFIG_SYS_MONITOR_BASE, %a1
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move.l #__init_end, %a2
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move.l %a0, %a3
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/* copy the code to RAM */
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1:
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move.l (%a1)+, (%a3)+
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cmp.l %a1,%a2
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bgt.s 1b
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/*
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* We are done. Do not return, instead branch to second part of board
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* initialization, now running from RAM.
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*/
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move.l %a0, %a1
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add.l #(in_ram - CONFIG_SYS_MONITOR_BASE), %a1
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jmp (%a1)
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in_ram:
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clear_bss:
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/*
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* Now clear BSS segment
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*/
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move.l %a0, %a1
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add.l #(_sbss - CONFIG_SYS_MONITOR_BASE),%a1
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move.l %a0, %d1
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add.l #(_ebss - CONFIG_SYS_MONITOR_BASE),%d1
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6:
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clr.l (%a1)+
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cmp.l %a1,%d1
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bgt.s 6b
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/*
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* fix got table in RAM
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*/
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move.l %a0, %a1
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add.l #(__got_start - CONFIG_SYS_MONITOR_BASE),%a1
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move.l %a1,%a5 /* * fix got pointer register a5 */
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move.l %a0, %a2
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add.l #(__got_end - CONFIG_SYS_MONITOR_BASE),%a2
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7:
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move.l (%a1),%d1
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sub.l #_start,%d1
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add.l %a0,%d1
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move.l %d1,(%a1)+
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cmp.l %a2, %a1
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bne 7b
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/* calculate relative jump to board_init_r in ram */
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move.l %a0, %a1
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add.l #(board_init_r - CONFIG_SYS_MONITOR_BASE), %a1
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/* set parameters for board_init_r */
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move.l %a0,-(%sp) /* dest_addr */
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move.l %d0,-(%sp) /* gd */
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#if defined(DEBUG) && (CONFIG_SYS_TEXT_BASE != CONFIG_SYS_INT_FLASH_BASE) && \
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defined(CONFIG_SYS_HALT_BEFOR_RAM_JUMP)
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halt
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#endif
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jsr (%a1)
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/*------------------------------------------------------------------------------*/
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/* exception code */
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.globl _fault
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_fault:
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jmp _fault
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.globl _exc_handler
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_exc_handler:
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SAVE_ALL
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movel %sp,%sp@-
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bsr exc_handler
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addql #4,%sp
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RESTORE_ALL
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.globl _int_handler
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_int_handler:
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SAVE_ALL
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movel %sp,%sp@-
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bsr int_handler
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addql #4,%sp
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RESTORE_ALL
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/*------------------------------------------------------------------------------*/
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.globl version_string
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version_string:
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.ascii U_BOOT_VERSION
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.ascii " (", U_BOOT_DATE, " - ", U_BOOT_TIME, ")"
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.ascii CONFIG_IDENT_STRING, "\0"
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.align 4
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