| /* |
| * 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 |
