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authorPatrick Georgi <pgeorgi@chromium.org>2015-03-27 14:03:22 +0100
committerPatrick Georgi <pgeorgi@google.com>2015-03-30 20:41:11 +0200
commit08f2ab6aac9d4e5d0f992d25b9bc8d77620f03d9 (patch)
treeaeb7a11184f85266d2b188cba15999ebe5b296f2 /src/arch/mips/bootblock.S
parent5602f2cd735c3a763a4c8256c1df1e8ee77832db (diff)
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build system: rename mips/bootblock.inc to mips/bootblock.S
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>
Diffstat (limited to 'src/arch/mips/bootblock.S')
-rw-r--r--src/arch/mips/bootblock.S44
1 files changed, 44 insertions, 0 deletions
diff --git a/src/arch/mips/bootblock.S b/src/arch/mips/bootblock.S
new file mode 100644
index 000000000..dbde803b1
--- /dev/null
+++ b/src/arch/mips/bootblock.S
@@ -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_BOOTBLOCK_STACK_TOP
+
+ /*
+ * Initialise the stack to a known value, used later to check for
+ * overflow.
+ */
+ li $t0, CONFIG_BOOTBLOCK_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