mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-12 07:57:21 +00:00
6f0dba85a9
save_boot_params_default() in cpu.c accesses uninitialized stack area when it compiled with -O0 (not optimized). This patch removes save_boot_params_default() and put the equivalent in start.S Signed-off-by: Tetsuyuki Kobayashi <koba@kmckk.co.jp> Acked-by: Tom Rini <trini@ti.com>
86 lines
2.3 KiB
C
86 lines
2.3 KiB
C
/*
|
|
* (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 __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;
|
|
}
|