diff options
| author | Paul Burton <paul.burton@imgtec.com> | 2014-06-14 00:00:10 +0100 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2015-03-21 16:56:59 +0100 |
| commit | e8530033b8b5a353c884fd3c90457f703ff0bc38 (patch) | |
| tree | 401cdb669ee76cae632dfdee644c21ccb8a618f5 /src/arch/mips/bootblock.inc | |
| parent | cb8f36043c9f0aec980c340108fc92011aacc9ca (diff) | |
arch/mips: Add base MIPS architecture support
Add the build infrastructure and basic architectural support required
to build for targets using the MIPS architecture. This is sufficient
to run on a simulator, but will require the addition of some cache
maintenance and timer setup in order to run on real hardware.
BUG=chrome-os-partner:31438, chromium:409082
TEST=none yet
Change-Id: I027902d8408e419b626d0aab7768bc564bd49047
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: fcc0d934d7223922c878b1f87021cb5c2d7e6f21
Original-Change-Id: If4f99554463bd3760fc142477440326fd16c67cc
Original-Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/207972
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/8760
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Diffstat (limited to 'src/arch/mips/bootblock.inc')
| -rw-r--r-- | src/arch/mips/bootblock.inc | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/src/arch/mips/bootblock.inc b/src/arch/mips/bootblock.inc new file mode 100644 index 0000000000..90cb386bf1 --- /dev/null +++ b/src/arch/mips/bootblock.inc @@ -0,0 +1,44 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2014 Imagination Technologies + * + * 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; version 2 of the License. + * + * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +.set noreorder /* Prevent assembler from "optimizing" this code. */ + +.section ".start", "ax", %progbits +.globl _start +_start: + /* Set the stack pointer */ + li $sp, CONFIG_STACK_TOP + + /* + * Initialise the stack to a known value, used later to check for + * overflow. + */ + li $t0, CONFIG_STACK_BOTTOM + addi $t1, $sp, -4 + li $t2, 0xdeadbeef +1: sw $t2, 0($t0) + bne $t0, $t1, 1b + addi $t0, $t0, 4 + + /* Run main */ + b main + + /* Should never return from main. */ +2: + b 2b |