| /* |
| * 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; |
| } |