diff options
Diffstat (limited to 'src/mainboard/intel/strago/spd/spd.c')
| -rwxr-xr-x | src/mainboard/intel/strago/spd/spd.c | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/src/mainboard/intel/strago/spd/spd.c b/src/mainboard/intel/strago/spd/spd.c new file mode 100755 index 0000000000..a37b4acbba --- /dev/null +++ b/src/mainboard/intel/strago/spd/spd.c @@ -0,0 +1,120 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2013 Google Inc. + * Copyright (C) 2015 Intel Corp. + * + * 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. + */ + +#include <cbfs.h> +#include <console/console.h> +#include <lib.h> +#include <soc/gpio.h> +#include <soc/romstage.h> +#include <string.h> + +#define SPD_SIZE 256 +#define SATA_GP3_PAD_CFG0 0x5828 +#define I2C3_SCL_PAD_CFG0 0x5438 +#define MF_PLT_CLK1_PAD_CFG0 0x4410 +#define I2C3_SDA_PAD_CFG0 0x5420 + +/* + * 0b0000 - 4GiB total - 2 x 2GiB Samsung K4B4G1646Q-HYK0 1600MHz + * 0b0001 - 4GiB total - 2 x 2GiB Hynix H5TC4G63CFR-PBA 1600MHz + * 0b0010- 2GiB total - 1 x 2GiB Samsung K4B4G1646Q-HYK0 1600MHz + * 0b0011 - 2GiB total - 1 x 2GiB Hynix H5TC4G63CFR-PBA 1600MHz + */ +static const uint32_t dual_channel_config = (1 << 0); + +static void *get_spd_pointer(char *spd_file_content, int total_spds, int *dual) +{ + int ram_id = 0; + ram_id |= get_gpio(COMMUNITY_GPSOUTHWEST_BASE, SATA_GP3_PAD_CFG0) << 0; + ram_id |= get_gpio(COMMUNITY_GPSOUTHWEST_BASE, I2C3_SCL_PAD_CFG0) << 1; + ram_id |= get_gpio(COMMUNITY_GPSOUTHEAST_BASE, MF_PLT_CLK1_PAD_CFG0) + << 2; + ram_id |= get_gpio(COMMUNITY_GPSOUTHWEST_BASE, I2C3_SDA_PAD_CFG0) << 3; + + /* + * There are only 2 SPDs supported on Cyan Board: + * Samsung 4G:0000 & Hynix 2G:0011 + */ + + /* + * RAMID0 on the first boot does not read the correct value,so checking + * bit 1 is enough as WA + */ + if (ram_id > 0) + ram_id = 3; + printk(BIOS_DEBUG, "ram_id=%d, total_spds: %d\n", ram_id, total_spds); + + if (ram_id >= total_spds) + return NULL; + + /* Single channel configs */ + if (dual_channel_config & (1 << ram_id)) + *dual = 1; + + return &spd_file_content[SPD_SIZE * ram_id]; +} + +/* Copy SPD data for on-board memory */ +void mainboard_fill_spd_data(struct pei_data *ps) +{ + char *spd_file; + size_t spd_file_len; + void *spd_content; + int dual_channel = 0; + + /* Find the SPD data in CBFS. */ + spd_file = cbfs_boot_map_with_leak("spd.bin", CBFS_TYPE_SPD, + &spd_file_len); + if (!spd_file) + die("SPD data not found."); + + if (spd_file_len < SPD_SIZE) + die("Missing SPD data."); + + /* + * Both channels are always present in SPD data. Always use matched + * DIMMs so use the same SPD data for each DIMM. + */ + spd_content = get_spd_pointer(spd_file, + spd_file_len / SPD_SIZE, + &dual_channel); + if (IS_ENABLED(CONFIG_DISPLAY_SPD_DATA) && spd_content != NULL) { + printk(BIOS_DEBUG, "SPD Data:\n"); + hexdump(spd_content, SPD_SIZE); + printk(BIOS_DEBUG, "\n"); + } + + /* + * Set SPD and memory configuration: + * Memory type: 0=DimmInstalled, + * 1=SolderDownMemory, + * 2=DimmDisabled + */ + if (spd_content != NULL) { + ps->spd_data_ch0 = spd_content; + ps->spd_ch0_config = 1; + if (dual_channel) { + ps->spd_data_ch1 = spd_content; + ps->spd_ch1_config = 1; + } else { + ps->spd_ch1_config = 2; + } + } +} |