08f2ab6aac
This is inspired by the commit listed below, but rewritten to match upstream, and split in smaller pieces to keep intent clear. Change-Id: I192fa50989b586fd8e967d4c22db56ac9de7a30e Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Based-On-Change-Id: I50af7dacf616e0f8ff4c43f4acc679089ad7022b Based-On-Signed-off-by: Julius Werner <jwerner@chromium.org> Based-On-Reviewed-on: https://chromium-review.googlesource.com/219170 Reviewed-on: http://review.coreboot.org/9108 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@google.com>
44 lines
1.2 KiB
ArmAsm
44 lines
1.2 KiB
ArmAsm
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2014 Imagination Technologies
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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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* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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.set noreorder /* Prevent assembler from "optimizing" this code. */
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.section ".start", "ax", %progbits
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.globl _start
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_start:
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/* Set the stack pointer */
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li $sp, CONFIG_BOOTBLOCK_STACK_TOP
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/*
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* Initialise the stack to a known value, used later to check for
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* overflow.
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*/
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li $t0, CONFIG_BOOTBLOCK_STACK_BOTTOM
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addi $t1, $sp, -4
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li $t2, 0xdeadbeef
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1: sw $t2, 0($t0)
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bne $t0, $t1, 1b
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addi $t0, $t0, 4
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/* Run main */
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b main
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/* Should never return from main. */
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2:
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b 2b
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