| /* |
| * Early initialization code for ARM architecture. |
| * |
| * This file is based off of the OMAP3530/ARM Cortex start.S file from Das |
| * U-Boot, which itself got the file from armboot. |
| * |
| * Copyright (c) 2004 Texas Instruments <r-woodruff2@ti.com> |
| * Copyright (c) 2001 Marius Gröger <mag@sysgo.de> |
| * Copyright (c) 2002 Alex Züpke <azu@sysgo.de> |
| * Copyright (c) 2002 Gary Jennejohn <garyj@denx.de> |
| * Copyright (c) 2003 Richard Woodruff <r-woodruff2@ti.com> |
| * Copyright (c) 2003 Kshitij <kshitij@ti.com> |
| * Copyright (c) 2006-2008 Syed Mohammed Khasim <x0khasim@ti.com> |
| * Copyright (c) 2013 The Chromium OS Authors |
| * |
| * 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., 59 Temple Place, Suite 330, Boston, |
| * MA 02111-1307 USA |
| */ |
| |
| #include <arch/asm.h> |
| |
| #include "stack.S" |
| |
| ENTRY(_start) |
| /* |
| * Set the cpu to System mode with IRQ and FIQ disabled. Prefetch/Data |
| * aborts may happen early and crash before the abort handlers are |
| * installed, but at least the problem will show up near the code that |
| * causes it. |
| */ |
| msr cpsr_cxf, #0xdf |
| |
| stack_init stack=.Stack size=.Stack_size seed=1 func=main |
| ENDPROC(_start) |
| |
| /* we do it this way because it's a 32-bit constant and |
| * in some cases too far away to be loaded as just an offset |
| * from IP |
| */ |
| .align 2 |
| .Stack: |
| .word CONFIG_BOOTBLOCK_STACK_TOP |
| .align 2 |
| /* create this size the same way we do in ramstage.ld: top-bottom */ |
| .Stack_size: |
| .word CONFIG_BOOTBLOCK_STACK_TOP - CONFIG_BOOTBLOCK_STACK_BOTTOM |
