raminit.c File Reference

#include <spd.h>
#include <delay.h>
#include <stdint.h>
#include <device/mmio.h>
#include <device/pci_ops.h>
#include <device/pci_def.h>
#include <device/smbus_host.h>
#include <console/console.h>
#include <timestamp.h>
#include "i440bx.h"
#include "raminit.h"

Include dependency graph for raminit.c:

Go to the source code of this file.

Data Structures
struct	dimm_size

Macros
#define	PRINT_DEBUG(x...)
#define	DUMPNORTH()
#define	RAM_COMMAND_NORMAL   0x0
#define	RAM_COMMAND_NOP   0x1
#define	RAM_COMMAND_PRECHARGE   0x2
#define	RAM_COMMAND_MRS   0x3
#define	RAM_COMMAND_CBR   0x4

Functions
static void	do_ram_command (u32 command)
	Send the specified RAM command to all DIMMs. More...
static void	set_dram_buffer_strength (void)
static void	spd_enable_refresh (void)
static void	sdram_set_registers (void)
static struct dimm_size	spd_get_dimm_size (unsigned int device)
static void	set_dram_row_attributes (void)
static void	sdram_set_spd_registers (void)
static void	sdram_enable (void)
void __weak	enable_spd (void)
void __weak	disable_spd (void)
void	sdram_initialize (int s3resume)

Variables
static const uint32_t	refresh_rate_map []
static const u8	register_values []

Macro Definition Documentation

DUMPNORTH

#define DUMPNORTH

(

)

Definition at line 25 of file raminit.c.

PRINT_DEBUG

#define PRINT_DEBUG

(

x...

)

Definition at line 24 of file raminit.c.

RAM_COMMAND_CBR

#define RAM_COMMAND_CBR   0x4

Definition at line 33 of file raminit.c.

RAM_COMMAND_MRS

#define RAM_COMMAND_MRS   0x3

Definition at line 32 of file raminit.c.

RAM_COMMAND_NOP

#define RAM_COMMAND_NOP   0x1

Definition at line 30 of file raminit.c.

RAM_COMMAND_NORMAL

#define RAM_COMMAND_NORMAL   0x0

Definition at line 29 of file raminit.c.

RAM_COMMAND_PRECHARGE

#define RAM_COMMAND_PRECHARGE   0x2

Definition at line 31 of file raminit.c.

Function Documentation

disable_spd()

void __weak disable_spd

(

void

)

Definition at line 1003 of file raminit.c.

Referenced by sdram_initialize().

Here is the caller graph for this function:

do_ram_command()

static void do_ram_command ( u32  command )

static

Send the specified RAM command to all DIMMs.

Parameters

command

The RAM command to send to the DIMM(s).

Definition at line 350 of file raminit.c.

References addr, DIMM_SOCKETS, DRB, NB, pci_read_config16(), pci_read_config8(), pci_write_config16(), RAM_COMMAND_MRS, RAM_COMMAND_NORMAL, read32(), and SDRAMC.

Referenced by sdram_enable().

Here is the call graph for this function:

Here is the caller graph for this function:

enable_spd()

void __weak enable_spd

(

void

)

Definition at line 1002 of file raminit.c.

Referenced by sdram_initialize().

Here is the caller graph for this function:

sdram_enable()

static void sdram_enable ( void  )

static

Definition at line 957 of file raminit.c.

References do_ram_command(), DUMPNORTH, NB, pci_write_config8(), PMCR, PRINT_DEBUG, RAM_COMMAND_CBR, RAM_COMMAND_MRS, RAM_COMMAND_NOP, RAM_COMMAND_NORMAL, RAM_COMMAND_PRECHARGE, spd_enable_refresh(), and udelay().

Referenced by sdram_initialize().

Here is the call graph for this function:

Here is the caller graph for this function:

sdram_initialize()

void sdram_initialize

(

int

s3resume

)

Definition at line 1005 of file raminit.c.

References disable_spd(), dump_spd_registers, enable_spd(), sdram_enable(), sdram_set_registers(), sdram_set_spd_registers(), timestamp_add_now(), TS_INITRAM_END, and TS_INITRAM_START.

Here is the call graph for this function:

sdram_set_registers()

static void sdram_set_registers ( void  )

static

Definition at line 643 of file raminit.c.

References ARRAY_SIZE, DUMPNORTH, NB, pci_write_config8(), PRINT_DEBUG, and register_values.

Referenced by sdram_initialize().

Here is the call graph for this function:

Here is the caller graph for this function:

sdram_set_spd_registers()

static void sdram_set_spd_registers ( void  )

static

Definition at line 948 of file raminit.c.

References set_dram_buffer_strength(), and set_dram_row_attributes().

Referenced by sdram_initialize().

Here is the call graph for this function:

Here is the caller graph for this function:

set_dram_buffer_strength()

static void set_dram_buffer_strength ( void  )

static

Definition at line 403 of file raminit.c.

References CONFIG, DRB0, DRB3, DRB7, MBFS, MBSC, NB, NBXCFG, pci_read_config8(), pci_write_config16(), and pci_write_config8().

Referenced by sdram_set_spd_registers().

Here is the call graph for this function:

Here is the caller graph for this function:

set_dram_row_attributes()

static void set_dram_row_attributes ( void  )

static

Definition at line 732 of file raminit.c.

References BIOS_ERR, device, die(), DIMM0, DIMM_SOCKETS, DRAMC, DRB, MODULE_REGISTERED, NB, NBXCFG, pci_read_config8(), pci_write_config16(), pci_write_config8(), PGPOL, PRINT_DEBUG, printk, RPS, dimm_size::side1, dimm_size::side2, smbus_read_byte(), SPD_DIMM_CONFIG_TYPE, SPD_ERROR_CHECKING_SDRAM_WIDTH, spd_get_dimm_size(), SPD_MEMORY_TYPE, SPD_MEMORY_TYPE_EDO, SPD_MEMORY_TYPE_SDRAM, SPD_MODULE_ATTRIBUTES, SPD_MODULE_DATA_WIDTH_LSB, SPD_NUM_BANKS_PER_SDRAM, SPD_NUM_COLUMNS, SPD_NUM_DIMM_BANKS, value, and width.

Referenced by sdram_set_spd_registers().

Here is the call graph for this function:

Here is the caller graph for this function:

spd_enable_refresh()

static void spd_enable_refresh ( void  )

static

Definition at line 620 of file raminit.c.

References DIMM0, DIMM_SOCKETS, DRAMC, NB, pci_read_config8(), pci_write_config8(), PRINT_DEBUG, refresh_rate_map, smbus_read_byte(), SPD_REFRESH, and value.

Referenced by sdram_enable().

Here is the call graph for this function:

Here is the caller graph for this function:

spd_get_dimm_size()

static struct dimm_size spd_get_dimm_size ( unsigned int  device )

static

Definition at line 643 of file raminit.c.

Referenced by set_dram_row_attributes().

Here is the caller graph for this function:

Variable Documentation

refresh_rate_map

const uint32_t refresh_rate_map[]

static

Initial value:

= {
        1, 5, 5, 2, 3, 4
}

Definition at line 45 of file raminit.c.

Referenced by spd_enable_refresh().

register_values

const u8 register_values[]

static

Definition at line 50 of file raminit.c.

Referenced by sdram_set_registers().