| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <console/console.h> |
| #include <device/mmio.h> |
| #include <types.h> |
| |
| #include "sandybridge.h" |
| |
| static const char *const ecc_decoder[] = { |
| "inactive", |
| "active on IO", |
| "disabled on IO", |
| "active", |
| }; |
| |
| #define ON_OFF(val) (((val) & 1) ? "on" : "off") |
| |
| /* Print the 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 = mchbar_read32(MAD_CHNL); |
| addr_decode_ch[0] = mchbar_read32(MAD_DIMM_CH0); |
| addr_decode_ch[1] = mchbar_read32(MAD_DIMM_CH1); |
| |
| const int refclk = mchbar_read32(MC_BIOS_REQ) & 0x100 ? 100 : 133; |
| |
| printk(BIOS_DEBUG, "memcfg DDR3 ref clock %d MHz\n", refclk); |
| printk(BIOS_DEBUG, "memcfg DDR3 clock %d MHz\n", |
| (mchbar_read32(MC_BIOS_DATA) * refclk * 100 * 2 + 50) / 100); |
| |
| printk(BIOS_DEBUG, "memcfg channel assignment: A: %d, B % d, C % d\n", |
| (addr_decoder_common >> 0) & 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", ON_OFF(ch_conf >> 22)); |
| printk(BIOS_DEBUG, " rank interleave %s\n", ON_OFF(ch_conf >> 21)); |
| 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" : ""); |
| } |
| } |
| #undef ON_OFF |