| /* |
| * (C) Copyright 2008 Texas Insturments |
| * |
| * (C) Copyright 2002 |
| * Sysgo Real-Time Solutions, GmbH <www.elinos.com> |
| * Marius Groeger <mgroeger@sysgo.de> |
| * |
| * (C) Copyright 2002 |
| * Gary Jennejohn, DENX Software Engineering, <garyj@denx.de> |
| * |
| * See file CREDITS for list of people who contributed to this |
| * project. |
| * |
| * 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; either version 2 of |
| * the License, or (at your option) any later version. |
| * |
| * 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 |
| */ |
| |
| /* |
| * CPU specific code |
| */ |
| |
| #include <common.h> |
| #include <command.h> |
| #include <asm/system.h> |
| #include <asm/cache.h> |
| #include <asm/armv7.h> |
| #include <linux/compiler.h> |
| |
| void save_boot_params_default(u32 r0, u32 r1, u32 r2, u32 r3) |
| { |
| } |
| |
| void save_boot_params(u32 r0, u32 r1, u32 r2, u32 r3) |
| __attribute__((weak, alias("save_boot_params_default"))); |
| |
| void __weak cpu_cache_initialization(void){} |
| |
| int cleanup_before_linux(void) |
| { |
| /* |
| * this function is called just before we call linux |
| * it prepares the processor for linux |
| * |
| * we turn off caches etc ... |
| */ |
| #ifndef CONFIG_SPL_BUILD |
| disable_interrupts(); |
| #endif |
| |
| /* |
| * Turn off I-cache and invalidate it |
| */ |
| icache_disable(); |
| invalidate_icache_all(); |
| |
| /* |
| * turn off D-cache |
| * dcache_disable() in turn flushes the d-cache and disables MMU |
| */ |
| dcache_disable(); |
| v7_outer_cache_disable(); |
| |
| /* |
| * After D-cache is flushed and before it is disabled there may |
| * be some new valid entries brought into the cache. We are sure |
| * that these lines are not dirty and will not affect our execution. |
| * (because unwinding the call-stack and setting a bit in CP15 SCTRL |
| * is all we did during this. We have not pushed anything on to the |
| * stack. Neither have we affected any static data) |
| * So just invalidate the entire d-cache again to avoid coherency |
| * problems for kernel |
| */ |
| invalidate_dcache_all(); |
| |
| /* |
| * Some CPU need more cache attention before starting the kernel. |
| */ |
| cpu_cache_initialization(); |
| |
| return 0; |
| } |