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Primitive memory test

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This adds a generic primitive memory test. We should look into
using tests in src/lib/ramtest.c, but they seem to rely too heavily
on x86 asm and this test has been useful on multiple ARM platforms.

BUG=none
BRANCH=none
TEST=builds and runs on nyan
Signed-off-by: David Hendricks <dhendrix@chromium.org>

Change-Id: Ia0fb4e12bc59bf708be13faf63c346b531eb3aed
Reviewed-on: https://chromium-review.googlesource.com/186309
Reviewed-by: Stefan Reinauer <reinauer@chromium.org>
Commit-Queue: David Hendricks <dhendrix@chromium.org>
Tested-by: David Hendricks <dhendrix@chromium.org>
This commit is contained in:
David Hendricks 2014-02-13 13:07:50 -08:00 • committed by chrome-internal-fetch
commit e7625c1541
3 changed files with 70 additions and 0 deletions
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3
src/include/lib.h
View file

@ -39,6 +39,9 @@ void ram_check(unsigned long start, unsigned long stop);
int ram_check_nodie(unsigned long start, unsigned long stop);
void quick_ram_check(void);
/* Defined in primitive_memtest.c */
int primitive_memtest(uintptr_t base, uintptr_t size);
/* Defined in src/lib/stack.c */
int checkstack(void *top_of_stack, int core);

2
src/lib/Makefile.inc
View file

@ -43,6 +43,8 @@ romstage-y += cbfs.c
romstage-$(CONFIG_COMMON_CBFS_SPI_WRAPPER) += cbfs_spi.c
romstage-y += lzma.c
#romstage-y += lzmadecode.c
romstage-$(CONFIG_PRIMITIVE_MEMTEST) += primitive_memtest.c
ramstage-$(CONFIG_PRIMITIVE_MEMTEST) += primitive_memtest.c
romstage-$(CONFIG_CACHE_AS_RAM) += ramtest.c
romstage-$(CONFIG_CONSOLE_SERIAL8250) += uart8250.c
romstage-$(CONFIG_CONSOLE_SERIAL8250MEM) += uart8250mem.c

65
src/lib/primitive_memtest.c Normal file
View file

@ -0,0 +1,65 @@
/*
* This file is part of the coreboot project.
*
* Copyright 2014 Google Inc.
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <inttypes.h>
#include <lib.h>
#include <console/console.h>
int primitive_memtest(uintptr_t base, uintptr_t size)
{
uintptr_t *p;
uintptr_t i;
int bad = 0;
printk(BIOS_SPEW, "Performing primitive memory test.\n");
printk(BIOS_SPEW, "DRAM start: 0x%08x, DRAM size: 0x%08x", base, size);
for(i = base; i < base + (size - 1) - sizeof(p); i += sizeof(p)) {
if (i % 0x100000 == 0) {
if ((i % 0x800000) == 0)
printk(BIOS_SPEW, "\n");
else if (i != 0)
printk(BIOS_SPEW, " ");
printk(BIOS_SPEW, "0x%08x", i);
}
p = (uintptr_t *)i;
*p = i;
}
printk(BIOS_SPEW, "\n\nReading back DRAM content");
for(i = base; i < base + (size - 1) - sizeof(p); i += sizeof(p)) {
if (i % 0x100000 == 0) {
if ((i % 0x800000) == 0)
printk(BIOS_SPEW, "\n");
else if (i != 0)
printk(BIOS_SPEW, " ");
printk(BIOS_SPEW, "0x%08x", i);
}
p = (uintptr_t *)i;
if (*p != i) {
printk(BIOS_SPEW, "\n0x%08zx: got 0x%zx\n", i, *p);
bad++;
}
}
printk(BIOS_SPEW, "\n");
printk(BIOS_SPEW, "%d errors\n", bad);
return bad;
}