diff options
author | Ingo Molnar <mingo@elte.hu> | 2009-05-11 14:44:27 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2009-05-11 14:44:31 +0200 |
commit | 41fb454ebe6024f5c1e3b3cbc0abc0da762e7b51 (patch) | |
tree | 51c50bcb67a5039448ddfa1869d7948cab1217e9 /arch/microblaze/kernel/head.S | |
parent | 19c1a6f5764d787113fa323ffb18be7991208f82 (diff) | |
parent | 091bf7624d1c90cec9e578a18529f615213ff847 (diff) |
Merge commit 'v2.6.30-rc5' into core/iommu
Merge reason: core/iommu was on an .30-rc1 base,
update it to .30-rc5 to refresh.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/microblaze/kernel/head.S')
-rw-r--r-- | arch/microblaze/kernel/head.S | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/arch/microblaze/kernel/head.S b/arch/microblaze/kernel/head.S new file mode 100644 index 00000000000..319dc35fc92 --- /dev/null +++ b/arch/microblaze/kernel/head.S @@ -0,0 +1,56 @@ +/* + * Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu> + * Copyright (C) 2007-2009 PetaLogix + * Copyright (C) 2006 Atmark Techno, Inc. + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + */ + +#include <linux/linkage.h> +#include <asm/thread_info.h> +#include <asm/page.h> + + .text +ENTRY(_start) + mfs r1, rmsr + andi r1, r1, ~2 + mts rmsr, r1 + +/* save fdt to kernel location */ +/* r7 stores pointer to fdt blob */ + beqi r7, no_fdt_arg + or r11, r0, r0 /* incremment */ + ori r4, r0, TOPHYS(_fdt_start) /* save bram context */ + ori r3, r0, (0x4000 - 4) +_copy_fdt: + lw r12, r7, r11 /* r12 = r7 + r11 */ + sw r12, r4, r11 /* addr[r4 + r11] = r12 */ + addik r11, r11, 4 /* increment counting */ + bgtid r3, _copy_fdt /* loop for all entries */ + addik r3, r3, -4 /* descrement loop */ +no_fdt_arg: + + /* Initialize small data anchors */ + la r13, r0, _KERNEL_SDA_BASE_ + la r2, r0, _KERNEL_SDA2_BASE_ + + /* Initialize stack pointer */ + la r1, r0, init_thread_union + THREAD_SIZE - 4 + + /* Initialize r31 with current task address */ + la r31, r0, init_task + + /* + * Call platform dependent initialize function. + * Please see $(ARCH)/mach-$(SUBARCH)/setup.c for + * the function. + */ + la r8, r0, machine_early_init + brald r15, r8 + nop + + la r15, r0, machine_halt + braid start_kernel + nop |