mirror of
https://github.com/smaeul/u-boot.git
synced 2025-11-04 05:50:17 +00:00
123 lines
3.2 KiB
C
123 lines
3.2 KiB
C
/*
|
|
* (C) Copyright 2007
|
|
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
|
*
|
|
* Author: Igor Lisitsin <igor@emcraft.com>
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
#include <common.h>
|
|
|
|
/* Cache test
|
|
*
|
|
* This test verifies the CPU data and instruction cache using
|
|
* several test scenarios.
|
|
*/
|
|
|
|
#include <post.h>
|
|
|
|
#if CONFIG_POST & CONFIG_SYS_POST_CACHE
|
|
|
|
#include <asm/mmu.h>
|
|
#include <watchdog.h>
|
|
|
|
#define CACHE_POST_SIZE 1024
|
|
|
|
int cache_post_test1 (int tlb, void *p, int size);
|
|
int cache_post_test2 (int tlb, void *p, int size);
|
|
int cache_post_test3 (int tlb, void *p, int size);
|
|
int cache_post_test4 (int tlb, void *p, int size);
|
|
int cache_post_test5 (int tlb, void *p, int size);
|
|
int cache_post_test6 (int tlb, void *p, int size);
|
|
|
|
#ifdef CONFIG_440
|
|
static unsigned char testarea[CACHE_POST_SIZE]
|
|
__attribute__((__aligned__(CACHE_POST_SIZE)));
|
|
#endif
|
|
|
|
int cache_post_test (int flags)
|
|
{
|
|
void *virt = (void *)CONFIG_SYS_POST_CACHE_ADDR;
|
|
int ints;
|
|
int res = 0;
|
|
int tlb = -1; /* index to the victim TLB entry */
|
|
|
|
/*
|
|
* All 44x variants deal with cache management differently
|
|
* because they have the address translation always enabled.
|
|
* The 40x ppc's don't use address translation in U-Boot at all,
|
|
* so we have to distinguish here between 40x and 44x.
|
|
*/
|
|
#ifdef CONFIG_440
|
|
int word0, i;
|
|
|
|
/*
|
|
* Allocate a new TLB entry, since we are going to modify
|
|
* the write-through and caching inhibited storage attributes.
|
|
*/
|
|
program_tlb((u32)testarea, (u32)virt, CACHE_POST_SIZE,
|
|
TLB_WORD2_I_ENABLE);
|
|
|
|
/* Find the TLB entry */
|
|
for (i = 0;; i++) {
|
|
if (i >= PPC4XX_TLB_SIZE) {
|
|
printf ("Failed to program tlb entry\n");
|
|
return -1;
|
|
}
|
|
word0 = mftlb1(i);
|
|
if (TLB_WORD0_EPN_DECODE(word0) == (u32)virt) {
|
|
tlb = i;
|
|
break;
|
|
}
|
|
}
|
|
#endif
|
|
ints = disable_interrupts ();
|
|
|
|
WATCHDOG_RESET ();
|
|
if (res == 0)
|
|
res = cache_post_test1 (tlb, virt, CACHE_POST_SIZE);
|
|
WATCHDOG_RESET ();
|
|
if (res == 0)
|
|
res = cache_post_test2 (tlb, virt, CACHE_POST_SIZE);
|
|
WATCHDOG_RESET ();
|
|
if (res == 0)
|
|
res = cache_post_test3 (tlb, virt, CACHE_POST_SIZE);
|
|
WATCHDOG_RESET ();
|
|
if (res == 0)
|
|
res = cache_post_test4 (tlb, virt, CACHE_POST_SIZE);
|
|
WATCHDOG_RESET ();
|
|
if (res == 0)
|
|
res = cache_post_test5 (tlb, virt, CACHE_POST_SIZE);
|
|
WATCHDOG_RESET ();
|
|
if (res == 0)
|
|
res = cache_post_test6 (tlb, virt, CACHE_POST_SIZE);
|
|
|
|
if (ints)
|
|
enable_interrupts ();
|
|
|
|
#ifdef CONFIG_440
|
|
remove_tlb((u32)virt, CACHE_POST_SIZE);
|
|
#endif
|
|
|
|
return res;
|
|
}
|
|
|
|
#endif /* CONFIG_POST & CONFIG_SYS_POST_CACHE */
|