coreboot
coreboot is an Open Source project aimed at replacing the proprietary BIOS found in most computers.
Data Structures | Macros | Functions
raminit.c File Reference
#include <device/pci_ops.h>
#include <device/smbus_host.h>
#include <cbmem.h>
#include <cf9_reset.h>
#include <console/console.h>
#include <arch/cpu.h>
#include <spd.h>
#include <string.h>
#include <device/dram/ddr2.h>
#include <device/dram/ddr3.h>
#include <mrc_cache.h>
#include <timestamp.h>
#include <types.h>
#include "raminit.h"
#include "x4x.h"
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Data Structures

struct  abs_timings
 

Macros

#define MRC_CACHE_VERSION   0
 
#define CTRL_MIN_TCLK_DDR2   TCK_400MHZ
 

Functions

static u16 ddr2_get_crc (u8 device, u8 len)
 
static u16 ddr3_get_crc (u8 device, u8 len)
 
static enum cb_err verify_spds (const u8 *spd_map, const struct sysinfo *ctrl_cached)
 
static void select_cas_dramfreq_ddr2 (struct sysinfo *s, const struct abs_timings *saved_timings)
 
static void mchinfo_ddr2 (struct sysinfo *s)
 
static int ddr2_save_dimminfo (u8 dimm_idx, u8 *raw_spd, struct abs_timings *saved_timings, struct sysinfo *s)
 
static void normalize_tCLK (u32 *tCLK)
 
static void select_cas_dramfreq_ddr3 (struct sysinfo *s, struct abs_timings *saved_timings)
 
static void workaround_stacked_mode (struct sysinfo *s)
 
static int ddr3_save_dimminfo (u8 dimm_idx, u8 *raw_spd, struct abs_timings *saved_timings, struct sysinfo *s)
 
static void select_discrete_timings (struct sysinfo *s, const struct abs_timings *timings)
 
static void print_selected_timings (struct sysinfo *s)
 
static void find_fsb_speed (struct sysinfo *s)
 
static void decode_spd_select_timings (struct sysinfo *s)
 
static void find_dimm_config (struct sysinfo *s)
 
static void checkreset_ddr2 (int boot_path)
 
void sdram_initialize (int boot_path, const u8 *spd_map)
 

Macro Definition Documentation

◆ CTRL_MIN_TCLK_DDR2

#define CTRL_MIN_TCLK_DDR2   TCK_400MHZ

Definition at line 77 of file raminit.c.

◆ MRC_CACHE_VERSION

#define MRC_CACHE_VERSION   0

Definition at line 20 of file raminit.c.

Function Documentation

◆ checkreset_ddr2()

static void checkreset_ddr2 ( int  boot_path)
static

Definition at line 529 of file raminit.c.

References BIOS_DEBUG, full_reset(), HOST_BRIDGE, mchbar_read32(), pci_and_config8(), PCI_DEV, pci_or_config8(), pci_read_config8(), pci_write_config8(), PMSTS_MCHBAR, and printk.

Referenced by sdram_initialize().

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◆ ddr2_get_crc()

static u16 ddr2_get_crc ( u8  device,
u8  len 
)
static

Definition at line 22 of file raminit.c.

References spd_ddr2_calc_unique_crc().

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◆ ddr2_save_dimminfo()

static int ddr2_save_dimminfo ( u8  dimm_idx,
u8 *  raw_spd,
struct abs_timings *  saved_timings,
struct sysinfo *  s 
)
static

Definition at line 135 of file raminit.c.

References dimm_attr_ddr2_st::banks, BIOS_DEBUG, BIOS_ERR, dimm_attr_ddr2_st::cas_supported, abs_timings::cas_supported, CB_ERR, CB_SUCCESS, dimm_attr_ddr2_st::col_bits, CONFIG, dimm_attr_ddr2_st::cycle_time, dram_print_spd_ddr2(), MAX, abs_timings::min_tCLK_cas, abs_timings::min_tRAS, abs_timings::min_tRCD, abs_timings::min_tRFC, abs_timings::min_tRP, abs_timings::min_tRRD, abs_timings::min_tRTP, abs_timings::min_tWR, abs_timings::min_tWTR, N_BANKS_4, N_BANKS_8, printk, dimm_attr_ddr2_st::ranks, dimm_attr_ddr2_st::row_bits, s, spd_ddr2_calc_unique_crc(), spd_decode_ddr2(), spd_decode_spd_size_ddr2(), SPD_STATUS_OK, dimm_attr_ddr2_st::tRAS, dimm_attr_ddr2_st::tRCD, dimm_attr_ddr2_st::tRFC, dimm_attr_ddr2_st::tRP, dimm_attr_ddr2_st::tRRD, dimm_attr_ddr2_st::tRTP, dimm_attr_ddr2_st::tWR, dimm_attr_ddr2_st::tWTR, and dimm_attr_ddr2_st::width.

Referenced by decode_spd_select_timings().

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◆ ddr3_get_crc()

static u16 ddr3_get_crc ( u8  device,
u8  len 
)
static

Definition at line 30 of file raminit.c.

References spd_ddr3_calc_unique_crc().

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◆ ddr3_save_dimminfo()

static int ddr3_save_dimminfo ( u8  dimm_idx,
u8 *  raw_spd,
struct abs_timings *  saved_timings,
struct sysinfo *  s 
)
static

Definition at line 334 of file raminit.c.

References BIOS_ERR, dimm_attr_ddr3_st::cas_supported, abs_timings::cas_supported, CB_ERR, CB_SUCCESS, dimm_attr_ddr3_st::col_bits, CONFIG, dram_print_spd_ddr3(), dimm_attr_ddr3_st::flags, MAX, abs_timings::min_tAA, abs_timings::min_tRAS, abs_timings::min_tRCD, abs_timings::min_tRFC, abs_timings::min_tRP, abs_timings::min_tRRD, abs_timings::min_tRTP, abs_timings::min_tWR, abs_timings::min_tWTR, N_BANKS_8, dimm_flags_ddr3_st::pins_mirrored, printk, dimm_attr_ddr3_st::ranks, dimm_attr_ddr3_st::row_bits, s, spd_ddr3_calc_unique_crc(), spd_decode_ddr3(), SPD_STATUS_OK, dimm_attr_ddr3_st::tAA, dimm_attr_ddr3_st::tRAS, dimm_attr_ddr3_st::tRCD, dimm_attr_ddr3_st::tRFC, dimm_attr_ddr3_st::tRP, dimm_attr_ddr3_st::tRRD, dimm_attr_ddr3_st::tRTP, dimm_attr_ddr3_st::tWR, dimm_attr_ddr3_st::tWTR, and dimm_attr_ddr3_st::width.

Referenced by decode_spd_select_timings().

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◆ decode_spd_select_timings()

static void decode_spd_select_timings ( struct sysinfo *  s)
static

Definition at line 433 of file raminit.c.

References BIOS_DEBUG, BIOS_WARNING, abs_timings::cas_supported, DDR2, ddr2_save_dimminfo(), DDR2SPD, DDR3, ddr3_save_dimminfo(), DDR3SPD, device, die(), FOR_EACH_DIMM, memset(), printk, RAW_CARD_POPULATED, RAW_CARD_UNPOPULATED, s, select_cas_dramfreq_ddr2(), select_cas_dramfreq_ddr3(), select_discrete_timings(), smbus_read_byte(), SPD_MEMORY_TYPE, UINT32_MAX, and workaround_stacked_mode().

Referenced by sdram_initialize().

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◆ find_dimm_config()

static void find_dimm_config ( struct sysinfo *  s)
static

Definition at line 504 of file raminit.c.

References BIOS_DEBUG, die(), DIMMS_PER_CHANNEL, FOR_EACH_POPULATED_CHANNEL, FOR_EACH_POPULATED_DIMM_IN_CHANNEL, printk, and s.

Referenced by sdram_initialize().

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◆ find_fsb_speed()

static void find_fsb_speed ( struct sysinfo *  s)
static

Definition at line 413 of file raminit.c.

References BIOS_WARNING, CLKCFG_FSBCLK_MASK, CLKCFG_FSBCLK_SHIFT, CLKCFG_MCHBAR, FSB_CLOCK_1066MHz, FSB_CLOCK_1333MHz, FSB_CLOCK_800MHz, mchbar_read32(), printk, and s.

Referenced by sdram_initialize().

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◆ mchinfo_ddr2()

static void mchinfo_ddr2 ( struct sysinfo *  s)
static

Definition at line 115 of file raminit.c.

References BIOS_WARNING, cpuid_ext(), cpuid_result::eax, HOST_BRIDGE, pci_read_config16(), pci_read_config32(), and printk.

Referenced by sdram_initialize().

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◆ normalize_tCLK()

static void normalize_tCLK ( u32 *  tCLK)
static

Definition at line 207 of file raminit.c.

References TCK_400MHZ, TCK_533MHZ, and TCK_666MHZ.

Referenced by select_cas_dramfreq_ddr3().

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◆ print_selected_timings()

static void print_selected_timings ( struct sysinfo *  s)
static

Definition at line 396 of file raminit.c.

References BIOS_DEBUG, ddr_to_mhz(), fsb_to_mhz(), printk, and s.

Referenced by sdram_initialize().

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◆ sdram_initialize()

void sdram_initialize ( int  boot_path,
const u8 *  spd_map 
)
Parameters
boot_path0 = normal, 1 = reset, 2 = resume from s3

Definition at line 562 of file raminit.c.

References BIOS_DEBUG, sysinfo::boot_path, BOOT_PATH_RESUME, BOOT_PATH_WARM_RESET, CB_SUCCESS, cbmem_recovery(), checkreset_ddr2(), decode_spd_select_timings(), do_raminit(), find_dimm_config(), find_fsb_speed(), full_reset(), HOST_BRIDGE, sysinfo::max_fsb, mchinfo_ddr2(), memcpy(), memset(), mrc_cache_current_mmap_leak(), mrc_cache_stash_data(), MRC_CACHE_VERSION, MRC_TRAINING_DATA, pci_and_config8(), PCI_DEV, pci_or_config8(), pci_read_config8(), pci_write_config8(), print_selected_timings(), printk, s, sysinfo::s3resume, sysinfo::spd_map, system_reset(), timestamp_add_now(), TS_INITRAM_END, TS_INITRAM_START, and verify_spds().

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◆ select_cas_dramfreq_ddr2()

static void select_cas_dramfreq_ddr2 ( struct sysinfo *  s,
const struct abs_timings *  saved_timings 
)
static

Definition at line 79 of file raminit.c.

References abs_timings::cas_supported, CTRL_MIN_TCLK_DDR2, die(), MEM_CLOCK_667MHz, MEM_CLOCK_800MHz, abs_timings::min_tCLK_cas, s, SPD_CAS_LATENCY_DDR2_5, SPD_CAS_LATENCY_DDR2_6, spd_get_msbs(), TCK_200MHZ, TCK_266MHZ, TCK_333MHZ, and TCK_400MHZ.

Referenced by decode_spd_select_timings().

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◆ select_cas_dramfreq_ddr3()

static void select_cas_dramfreq_ddr3 ( struct sysinfo *  s,
struct abs_timings *  saved_timings 
)
static

Definition at line 219 of file raminit.c.

References BIOS_ERR, BIOS_SPEW, abs_timings::cas_supported, DDR3_MAX_CAS, die(), DIV_ROUND_UP, FSB_CLOCK_1066MHz, FSB_CLOCK_1333MHz, FSB_CLOCK_800MHz, HOST_BRIDGE, MAX, MEM_CLOCK_1066MHz, MEM_CLOCK_1333MHz, MEM_CLOCK_800MHz, abs_timings::min_tAA, abs_timings::min_tclk, normalize_tCLK(), pci_read_config16(), printk, s, TCK_400MHZ, TCK_533MHZ, and TCK_666MHZ.

Referenced by decode_spd_select_timings().

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◆ select_discrete_timings()

static void select_discrete_timings ( struct sysinfo *  s,
const struct abs_timings *  timings 
)
static

Definition at line 385 of file raminit.c.

References DIV_ROUND_UP, timings::min_tRAS, timings::min_tRCD, timings::min_tRFC, timings::min_tRP, timings::min_tWR, and s.

Referenced by decode_spd_select_timings().

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◆ verify_spds()

static enum cb_err verify_spds ( const u8 *  spd_map,
const struct sysinfo *  ctrl_cached 
)
static

Definition at line 30 of file raminit.c.

Referenced by sdram_initialize().

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◆ workaround_stacked_mode()

static void workaround_stacked_mode ( struct sysinfo *  s)
static

Definition at line 317 of file raminit.c.

References CHANNEL_IS_POPULATED, D0F0_DEVEN, DDR2, HOST_BRIDGE, IGD0EN, MEM_CLOCK_1066MHz, pci_read_config32(), and s.

Referenced by decode_spd_select_timings().

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