memory.c File Reference

#include <baseboard/variants.h>
#include <console/console.h>
#include <gpio.h>
#include <variant/gpio.h>
#include <string.h>

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Macros
#define	MEM_ID(x)   (1 << ((x) - 1))

Functions
static void	fill_lpddr3_memory_params (struct memory_params *p)
static void	fill_ddr4_memory_params (struct memory_params *p)
void	variant_memory_params (struct memory_params *p)

Variables
static const u16	rcomp_resistor_ddp [] = { 121, 81, 100 }
static const u16	rcomp_resistor_sdp [] = { 200, 81, 100 }
static const u16	rcomp_resistor_lpddr3 [] = { 200, 81, 162 }
static const u16	rcomp_target [] = { 100, 40, 20, 20, 26 }
static const u16	rcomp_target_lpddr3 [] = { 100, 40, 40, 23, 40 }
static const u8	dq_map_lpddr3 [][12]
static const u8	dqs_map_lpddr3 [][8]
static const uint16_t	ddp_bitmap = MEM_ID(4)

Macro Definition Documentation

MEM_ID

#define MEM_ID

(

x

)

(1 << ((x) - 1))

Definition at line 33 of file memory.c.

Function Documentation

fill_ddr4_memory_params()

static void fill_ddr4_memory_params ( struct memory_params *  p )

static

Definition at line 52 of file memory.c.

References ddp_bitmap, die(), MEM_ID, MEMORY_DDR4, memory_params::rcomp_resistor, rcomp_resistor_ddp, rcomp_resistor_sdp, memory_params::rcomp_resistor_size, memory_params::rcomp_target, rcomp_target, memory_params::rcomp_target_size, spd_index, memory_params::type, memory_params::use_sec_spd, and variant_memory_sku().

Referenced by variant_memory_params().

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fill_lpddr3_memory_params()

static void fill_lpddr3_memory_params ( struct memory_params *  p )

static

Definition at line 38 of file memory.c.

References memory_params::dq_map, dq_map_lpddr3, memory_params::dq_map_size, memory_params::dqs_map, dqs_map_lpddr3, memory_params::dqs_map_size, MEMORY_LPDDR3, memory_params::rcomp_resistor, rcomp_resistor_lpddr3, memory_params::rcomp_resistor_size, memory_params::rcomp_target, rcomp_target_lpddr3, memory_params::rcomp_target_size, memory_params::type, and memory_params::use_sec_spd.

Referenced by variant_memory_params().

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variant_memory_params()

void variant_memory_params

(

struct memory_params *

p

)

Definition at line 74 of file memory.c.

References fill_ddr4_memory_params(), fill_lpddr3_memory_params(), gpio_get(), gpio_input_pulldown(), GPIO_MEM_CONFIG_4, GPP_D10, memset(), and memory_params::single_channel.

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Variable Documentation

ddp_bitmap

const uint16_t ddp_bitmap = MEM_ID(4)

static

Definition at line 36 of file memory.c.

Referenced by fill_ddr4_memory_params().

dq_map_lpddr3

const u8 dq_map_lpddr3[][12]

static

Initial value:

= {
        { 0x0F, 0xF0, 0x00, 0xF0, 0x0F, 0xF0,
          0x0F, 0x00, 0xFF, 0x00, 0xFF, 0x00 },
        { 0x0F, 0xF0, 0x00, 0xF0, 0x0F, 0xF0,
          0x0F, 0x00, 0xFF, 0x00, 0xFF, 0x00 }
}

Definition at line 19 of file memory.c.

Referenced by fill_lpddr3_memory_params().

dqs_map_lpddr3

const u8 dqs_map_lpddr3[][8]

static

Initial value:

= {
        { 1, 0, 3, 2, 6, 5, 4, 7 },
        { 0, 3, 2, 1, 6, 4, 7, 5 },
}

Definition at line 27 of file memory.c.

Referenced by fill_lpddr3_memory_params().

rcomp_resistor_ddp

const u16 rcomp_resistor_ddp[] = { 121, 81, 100 }

static

Definition at line 10 of file memory.c.

Referenced by fill_ddr4_memory_params().

rcomp_resistor_lpddr3

const u16 rcomp_resistor_lpddr3[] = { 200, 81, 162 }

static

Definition at line 12 of file memory.c.

Referenced by fill_lpddr3_memory_params().

rcomp_resistor_sdp

const u16 rcomp_resistor_sdp[] = { 200, 81, 100 }

static

Definition at line 11 of file memory.c.

Referenced by fill_ddr4_memory_params().

rcomp_target

const u16 rcomp_target[] = { 100, 40, 20, 20, 26 }

static

Definition at line 15 of file memory.c.

Referenced by fill_ddr4_memory_params().

rcomp_target_lpddr3

const u16 rcomp_target_lpddr3[] = { 100, 40, 40, 23, 40 }

static

Definition at line 16 of file memory.c.

Referenced by fill_lpddr3_memory_params().