62 lines
1.6 KiB
C
62 lines
1.6 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright 2014 Google Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <inttypes.h>
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#include <lib.h>
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#include <console/console.h>
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int primitive_memtest(uintptr_t base, uintptr_t size)
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{
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uintptr_t *p;
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uintptr_t i;
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int bad = 0;
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printk(BIOS_SPEW, "Performing primitive memory test.\n");
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printk(BIOS_SPEW, "DRAM start: 0x%08x, DRAM size: 0x%08x", base, size);
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for(i = base; i < base + (size - 1) - sizeof(p); i += sizeof(p)) {
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if (i % 0x100000 == 0) {
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if ((i % 0x800000) == 0)
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printk(BIOS_SPEW, "\n");
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else if (i != 0)
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printk(BIOS_SPEW, " ");
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printk(BIOS_SPEW, "0x%08x", i);
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}
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p = (uintptr_t *)i;
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*p = i;
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}
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printk(BIOS_SPEW, "\n\nReading back DRAM content");
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for(i = base; i < base + (size - 1) - sizeof(p); i += sizeof(p)) {
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if (i % 0x100000 == 0) {
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if ((i % 0x800000) == 0)
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printk(BIOS_SPEW, "\n");
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else if (i != 0)
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printk(BIOS_SPEW, " ");
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printk(BIOS_SPEW, "0x%08x", i);
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}
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p = (uintptr_t *)i;
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if (*p != i) {
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printk(BIOS_SPEW, "\n0x%08zx: got 0x%zx\n", i, *p);
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bad++;
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}
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}
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printk(BIOS_SPEW, "\n");
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printk(BIOS_SPEW, "%d errors\n", bad);
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return bad;
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}
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