| Tom Rini | ee5bce4 | 2012-08-08 17:03:10 -0700 | [diff] [blame] | 1 | /* |
| 2 | * A lowlevel_init function that sets up the stack to call a C function to |
| 3 | * perform further init. |
| 4 | * |
| 5 | * (C) Copyright 2010 |
| 6 | * Texas Instruments, <www.ti.com> |
| 7 | * |
| 8 | * Author : |
| 9 | * Aneesh V <aneesh@ti.com> |
| 10 | * |
| 11 | * See file CREDITS for list of people who contributed to this |
| 12 | * project. |
| 13 | * |
| 14 | * This program is free software; you can redistribute it and/or |
| 15 | * modify it under the terms of the GNU General Public License as |
| 16 | * published by the Free Software Foundation; either version 2 of |
| 17 | * the License, or (at your option) any later version. |
| 18 | * |
| 19 | * This program is distributed in the hope that it will be useful, |
| 20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 22 | * GNU General Public License for more details. |
| 23 | * |
| 24 | * You should have received a copy of the GNU General Public License |
| 25 | * along with this program; if not, write to the Free Software |
| 26 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 27 | * MA 02111-1307 USA |
| 28 | */ |
| 29 | |
| 30 | #include <asm-offsets.h> |
| 31 | #include <config.h> |
| 32 | #include <linux/linkage.h> |
| 33 | |
| 34 | ENTRY(lowlevel_init) |
| 35 | /* |
| 36 | * Setup a temporary stack |
| 37 | */ |
| 38 | ldr sp, =CONFIG_SYS_INIT_SP_ADDR |
| Tom Rini | 7b643a4 | 2012-08-09 08:22:06 -0700 | [diff] [blame] | 39 | bic sp, sp, #7 /* 8-byte alignment for ABI compliance */ |
| SRICHARAN R | 3f30b0a | 2013-04-24 00:41:24 +0000 | [diff] [blame] | 40 | #ifdef CONFIG_SPL_BUILD |
| 41 | ldr r8, =gdata |
| 42 | #else |
| 43 | sub sp, #GD_SIZE |
| 44 | bic sp, sp, #7 |
| 45 | mov r8, sp |
| 46 | #endif |
| Tom Rini | ee5bce4 | 2012-08-08 17:03:10 -0700 | [diff] [blame] | 47 | /* |
| 48 | * Save the old lr(passed in ip) and the current lr to stack |
| 49 | */ |
| 50 | push {ip, lr} |
| 51 | |
| 52 | /* |
| 53 | * go setup pll, mux, memory |
| 54 | */ |
| 55 | bl s_init |
| 56 | pop {ip, pc} |
| 57 | ENDPROC(lowlevel_init) |