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/*
* 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.
*/
#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;
}
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