60 lines
1.3 KiB
ArmAsm
60 lines
1.3 KiB
ArmAsm
/*
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* This file is part of the coreboot project.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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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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#include <cpu/x86/cache.h>
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#include <cpu/x86/post_code.h>
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.global bootblock_pre_c_entry
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bootblock_pre_c_entry:
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cache_as_ram:
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post_code(0x20)
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/*
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* Nothing to do here on qemu, RAM works just fine without any
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* initialization.
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*/
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/* Clear the cache memory region. This will also clear CAR GLOBAL */
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movl $_car_region_start, %edi
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movl $_car_region_end, %ecx
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sub %edi, %ecx
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shr $2, %ecx
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xorl %eax, %eax
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rep stosl
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post_code(0x21)
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movl $_car_stack_end, %esp
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/* Align the stack and keep aligned for call to bootblock_c_entry() */
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and $0xfffffff0, %esp
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sub $4, %esp
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/* Restore the BIST result and timestamps. */
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movd %mm0, %ebx
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movd %mm1, %eax
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movd %mm2, %edx
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pushl %ebx
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pushl %edx
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pushl %eax
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before_c_entry:
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post_code(0x29)
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call bootblock_c_entry_bist
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/* Never returns */
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.Lhlt:
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post_code(POST_DEAD_CODE)
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hlt
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jmp .Lhlt
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