biosram.c File Reference

#include <amdblocks/acpimmio.h>
#include <amdblocks/biosram.h>
#include <device/mmio.h>
#include <stdint.h>

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Macros
#define	BIOSRAM_AP_ENTRY   0xe8 /* 8 bytes */
#define	BIOSRAM_CBMEM_TOP   0xf0 /* 4 bytes */
#define	BIOSRAM_UMA_SIZE   0xf4 /* 4 bytes */
#define	BIOSRAM_UMA_BASE   0xf8 /* 8 bytes */

Functions
static uint8_t	biosram_read8 (uint8_t reg)
static void	biosram_write8 (uint8_t reg, uint8_t value)
static uint16_t	biosram_read16 (uint8_t reg)
static void	biosram_write16 (uint8_t reg, uint16_t value)
static uint32_t	biosram_read32 (uint8_t reg)
static void	biosram_write32 (uint8_t reg, uint32_t value)
void *	get_ap_entry_ptr (void)
void	set_ap_entry_ptr (void *entry)
void	backup_top_of_low_cacheable (uintptr_t ramtop)
uintptr_t	restore_top_of_low_cacheable (void)
void	save_uma_size (uint32_t size)
void	save_uma_base (uint64_t base)
uint32_t	get_uma_size (void)
uint64_t	get_uma_base (void)

Macro Definition Documentation

BIOSRAM_AP_ENTRY

#define BIOSRAM_AP_ENTRY   0xe8 /* 8 bytes */

Definition at line 9 of file biosram.c.

BIOSRAM_CBMEM_TOP

#define BIOSRAM_CBMEM_TOP   0xf0 /* 4 bytes */

Definition at line 10 of file biosram.c.

BIOSRAM_UMA_BASE

#define BIOSRAM_UMA_BASE   0xf8 /* 8 bytes */

Definition at line 12 of file biosram.c.

BIOSRAM_UMA_SIZE

#define BIOSRAM_UMA_SIZE   0xf4 /* 4 bytes */

Definition at line 11 of file biosram.c.

Function Documentation

backup_top_of_low_cacheable()

void backup_top_of_low_cacheable

(

uintptr_t

ramtop

)

Definition at line 61 of file biosram.c.

References BIOSRAM_CBMEM_TOP, and biosram_write32().

Referenced by amd_init_post(), and platform_AfterInitPost().

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biosram_read16()

static uint16_t biosram_read16 ( uint8_t  reg )

static

Definition at line 24 of file biosram.c.

References biosram_read8().

Referenced by biosram_read32().

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biosram_read32()

static uint32_t biosram_read32 ( uint8_t  reg )

static

Definition at line 36 of file biosram.c.

References biosram_read16(), and value.

Referenced by get_ap_entry_ptr(), get_uma_base(), get_uma_size(), and restore_top_of_low_cacheable().

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biosram_read8()

static uint8_t biosram_read8 ( uint8_t  reg )

static

Definition at line 14 of file biosram.c.

References acpimmio_biosram, and read8().

Referenced by biosram_read16().

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biosram_write16()

static void biosram_write16 ( uint8_t  reg, uint16_t  value  )

static

Definition at line 29 of file biosram.c.

References biosram_write8(), and value.

Referenced by biosram_write32().

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biosram_write32()

static void biosram_write32 ( uint8_t  reg, uint32_t  value  )

static

Definition at line 42 of file biosram.c.

References biosram_write16(), and value.

Referenced by backup_top_of_low_cacheable(), save_uma_base(), save_uma_size(), and set_ap_entry_ptr().

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biosram_write8()

static void biosram_write8 ( uint8_t  reg, uint8_t  value  )

static

Definition at line 19 of file biosram.c.

References acpimmio_biosram, value, and write8().

Referenced by biosram_write16().

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get_ap_entry_ptr()

void* get_ap_entry_ptr

(

void

)

Definition at line 51 of file biosram.c.

References BIOSRAM_AP_ENTRY, and biosram_read32().

Referenced by ap_bootblock_c_entry(), and bootblock_c_entry().

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get_uma_base()

uint64_t get_uma_base

(

void

)

Definition at line 87 of file biosram.c.

References base, biosram_read32(), and BIOSRAM_UMA_BASE.

Referenced by domain_read_resources().

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get_uma_size()

uint32_t get_uma_size

(

void

)

Definition at line 82 of file biosram.c.

References biosram_read32(), and BIOSRAM_UMA_SIZE.

Referenced by domain_read_resources().

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restore_top_of_low_cacheable()

uintptr_t restore_top_of_low_cacheable

(

void

)

Definition at line 66 of file biosram.c.

References BIOSRAM_CBMEM_TOP, and biosram_read32().

Referenced by add_uma_resource_below_tolm(), and cbmem_top_chipset().

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save_uma_base()

void save_uma_base

(

uint64_t

base

)

Definition at line 76 of file biosram.c.

References base, BIOSRAM_UMA_BASE, and biosram_write32().

Referenced by amd_init_post().

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save_uma_size()

void save_uma_size

(

uint32_t

size

)

Definition at line 71 of file biosram.c.

References BIOSRAM_UMA_SIZE, and biosram_write32().

Referenced by amd_init_post().

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set_ap_entry_ptr()

void set_ap_entry_ptr

(

void *

entry

)

Definition at line 56 of file biosram.c.

References BIOSRAM_AP_ENTRY, and biosram_write32().

Referenced by bsp_agesa_call(), and romstage_main().

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