mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-21 18:39:43 +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>
284 lines
8.1 KiB
ArmAsm
284 lines
8.1 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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.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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INITSP: .long 0x00000000 /* Initial SP */
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INITPC: .long _START /* Initial PC */
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vector02: .long _FAULT /* Access Error */
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vector03: .long _FAULT /* Address Error */
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vector04: .long _FAULT /* Illegal Instruction */
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vector05: .long _FAULT /* Reserved */
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vector06: .long _FAULT /* Reserved */
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vector07: .long _FAULT /* Reserved */
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vector08: .long _FAULT /* Privilege Violation */
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vector09: .long _FAULT /* Trace */
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vector0A: .long _FAULT /* Unimplemented A-Line */
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vector0B: .long _FAULT /* Unimplemented F-Line */
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vector0C: .long _FAULT /* Debug Interrupt */
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vector0D: .long _FAULT /* Reserved */
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vector0E: .long _FAULT /* Format Error */
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vector0F: .long _FAULT /* Unitialized Int. */
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/* Reserved */
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vector10_17:
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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vector18: .long _FAULT /* Spurious Interrupt */
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vector19: .long _FAULT /* Autovector Level 1 */
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vector1A: .long _FAULT /* Autovector Level 2 */
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vector1B: .long _FAULT /* Autovector Level 3 */
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vector1C: .long _FAULT /* Autovector Level 4 */
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vector1D: .long _FAULT /* Autovector Level 5 */
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vector1E: .long _FAULT /* Autovector Level 6 */
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vector1F: .long _FAULT /* Autovector Level 7 */
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/* TRAP #0 - #15 */
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vector20_2F:
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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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/* Reserved */
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vector30_3F:
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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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vector64_127:
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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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vector128_191:
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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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vector192_255:
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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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.text
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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 /* Mask off Interrupt */
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/* Set vector base register at the beginning of the Flash */
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move.l #CONFIG_SYS_FLASH_BASE, %d0
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movec %d0, %VBR
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move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_CTRL), %d0
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movec %d0, %RAMBAR0
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move.l #(CONFIG_SYS_INIT_RAM1_ADDR + CONFIG_SYS_INIT_RAM1_CTRL), %d0
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movec %d0, %RAMBAR1
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move.l #CONFIG_SYS_MBAR, %d0 /* set MBAR address */
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move.c %d0, %MBAR
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/* invalidate and disable cache */
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move.l #0x01040100, %d0 /* Invalidate cache cmd */
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movec %d0, %CACR /* Invalidate cache */
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move.l #0, %d0
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movec %d0, %ACR0
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movec %d0, %ACR1
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movec %d0, %ACR2
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movec %d0, %ACR3
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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
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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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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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bra _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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