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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2011 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 <console/console.h>
#include <string.h>
#include <arch/io.h>
#include <cbmem.h>
#include <device/pci_def.h>
#include "raminit.h"
#include "northbridge.h"
static const char *ecc_decoder[] = {
"inactive",
"active on IO",
"disabled on IO",
"active"
};
/*
* Dump in the log memory controller configuration as read from the memory
* controller registers.
*/
void report_memory_config(void)
{
u32 addr_decoder_common, addr_decode_ch[2];
int i;
addr_decoder_common = MCHBAR32(0x5000);
addr_decode_ch[0] = MCHBAR32(0x5004);
addr_decode_ch[1] = MCHBAR32(0x5008);
printk(BIOS_DEBUG, "memcfg DDR3 clock %d MHz\n",
(MCHBAR32(0x5e04) * 13333 * 2 + 50)/100);
printk(BIOS_DEBUG, "memcfg channel assignment: A: %d, B % d, C % d\n",
addr_decoder_common & 3,
(addr_decoder_common >> 2) & 3,
(addr_decoder_common >> 4) & 3);
for (i = 0; i < ARRAY_SIZE(addr_decode_ch); i++) {
u32 ch_conf = addr_decode_ch[i];
printk(BIOS_DEBUG, "memcfg channel[%d] config (%8.8x):\n",
i, ch_conf);
printk(BIOS_DEBUG, " ECC %s\n",
ecc_decoder[(ch_conf >> 24) & 3]);
printk(BIOS_DEBUG, " enhanced interleave mode %s\n",
((ch_conf >> 22) & 1) ? "on" : "off");
printk(BIOS_DEBUG, " rank interleave %s\n",
((ch_conf >> 21) & 1) ? "on" : "off");
printk(BIOS_DEBUG, " DIMMA %d MB width x%d %s rank%s\n",
((ch_conf >> 0) & 0xff) * 256,
((ch_conf >> 19) & 1) ? 16 : 8,
((ch_conf >> 17) & 1) ? "dual" : "single",
((ch_conf >> 16) & 1) ? "" : ", selected");
printk(BIOS_DEBUG, " DIMMB %d MB width x%d %s rank%s\n",
((ch_conf >> 8) & 0xff) * 256,
((ch_conf >> 20) & 1) ? 16 : 8,
((ch_conf >> 18) & 1) ? "dual" : "single",
((ch_conf >> 16) & 1) ? ", selected" : "");
}
}
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