spi.c File Reference

#include <stdint.h>
#include <device/mmio.h>
#include <console/console.h>
#include <spi_flash.h>
#include <spi-generic.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ops.h>
#include <stddef.h>
#include <Proc/Fch/FchPlatform.h>

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Macros
#define	SPI_REG_OPCODE   0x0
#define	SPI_REG_CNTRL01   0x1
#define	SPI_REG_CNTRL02   0x2
#define	CNTRL02_FIFO_RESET   (1 << 4)
#define	CNTRL02_EXEC_OPCODE   (1 << 0)
#define	SPI_REG_CNTRL03   0x3
#define	CNTRL03_SPIBUSY   (1 << 7)
#define	SPI_REG_FIFO   0xc
#define	SPI_REG_CNTRL11   0xd
#define	CNTRL11_FIFOPTR_MASK   0x07
#define	AMD_SB_SPI_TX_LEN   8

Functions
static uint8_t	spi_read (uint8_t reg)
static void	spi_write (uint8_t reg, uint8_t val)
static void	reset_internal_fifo_pointer (void)
static void	execute_command (void)
void	spi_init (void)
	Init all SPI controllers with default values and enable all SPI controller. More...
static int	spi_ctrlr_xfer (const struct spi_slave *slave, const void *dout, size_t bytesout, void *din, size_t bytesin)
int	chipset_volatile_group_begin (const struct spi_flash *flash)
int	chipset_volatile_group_end (const struct spi_flash *flash)
static int	xfer_vectors (const struct spi_slave *slave, struct spi_op vectors[], size_t count)

Variables
static uintptr_t	spibar
static const struct spi_ctrlr	spi_ctrlr
const struct spi_ctrlr_buses	spi_ctrlr_bus_map []
const size_t	spi_ctrlr_bus_map_count = ARRAY_SIZE(spi_ctrlr_bus_map)

Macro Definition Documentation

AMD_SB_SPI_TX_LEN

#define AMD_SB_SPI_TX_LEN   8

Definition at line 29 of file spi.c.

CNTRL02_EXEC_OPCODE

#define CNTRL02_EXEC_OPCODE   (1 << 0)

Definition at line 19 of file spi.c.

CNTRL02_FIFO_RESET

#define CNTRL02_FIFO_RESET   (1 << 4)

Definition at line 18 of file spi.c.

CNTRL03_SPIBUSY

#define CNTRL03_SPIBUSY   (1 << 7)

Definition at line 21 of file spi.c.

CNTRL11_FIFOPTR_MASK

#define CNTRL11_FIFOPTR_MASK   0x07

Definition at line 24 of file spi.c.

SPI_REG_CNTRL01

#define SPI_REG_CNTRL01   0x1

Definition at line 16 of file spi.c.

SPI_REG_CNTRL02

#define SPI_REG_CNTRL02   0x2

Definition at line 17 of file spi.c.

SPI_REG_CNTRL03

#define SPI_REG_CNTRL03   0x3

Definition at line 20 of file spi.c.

SPI_REG_CNTRL11

#define SPI_REG_CNTRL11   0xd

Definition at line 23 of file spi.c.

SPI_REG_FIFO

#define SPI_REG_FIFO   0xc

Definition at line 22 of file spi.c.

SPI_REG_OPCODE

#define SPI_REG_OPCODE   0x0

Definition at line 15 of file spi.c.

Function Documentation

chipset_volatile_group_begin()

int chipset_volatile_group_begin

(

const struct spi_flash *

flash

)

Definition at line 132 of file spi.c.

chipset_volatile_group_end()

int chipset_volatile_group_end

(

const struct spi_flash *

flash

)

Definition at line 141 of file spi.c.

execute_command()

static void execute_command ( void  )

static

Definition at line 55 of file spi.c.

References CNTRL02_EXEC_OPCODE, CNTRL03_SPIBUSY, spi_read(), SPI_REG_CNTRL02, SPI_REG_CNTRL03, and spi_write().

Referenced by spi_ctrlr_xfer().

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reset_internal_fifo_pointer()

static void reset_internal_fifo_pointer ( void  )

static

Definition at line 44 of file spi.c.

References CNTRL02_FIFO_RESET, CNTRL11_FIFOPTR_MASK, spi_read(), SPI_REG_CNTRL02, SPI_REG_CNTRL11, and spi_write().

Referenced by spi_ctrlr_xfer().

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spi_ctrlr_xfer()

static int spi_ctrlr_xfer ( const struct spi_slave *  slave, const void *  dout, size_t  bytesout, void *  din, size_t  bytesin  )

static

Definition at line 75 of file spi.c.

References AMD_SB_SPI_TX_LEN, BIOS_DEBUG, CONFIG, count, execute_command(), printk, reset_internal_fifo_pointer(), spi_read(), SPI_REG_CNTRL01, SPI_REG_FIFO, SPI_REG_OPCODE, and spi_write().

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spi_init()

void spi_init

(

void

)

Init all SPI controllers with default values and enable all SPI controller.

Definition at line 67 of file spi.c.

References pci_read_config32(), pcidev_on_root(), and spibar.

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spi_read()

static uint8_t spi_read ( uint8_t  reg )

inlinestatic

Definition at line 34 of file spi.c.

References read8(), and spibar.

Referenced by execute_command(), reset_internal_fifo_pointer(), and spi_ctrlr_xfer().

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spi_write()

static void spi_write ( uint8_t  reg, uint8_t  val  )

inlinestatic

Definition at line 39 of file spi.c.

References spibar, val, and write8().

Referenced by execute_command(), reset_internal_fifo_pointer(), and spi_ctrlr_xfer().

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xfer_vectors()

static int xfer_vectors ( const struct spi_slave *  slave, struct spi_op  vectors[], size_t  count  )

static

Definition at line 150 of file spi.c.

Variable Documentation

spi_ctrlr

const struct spi_ctrlr spi_ctrlr

static

Initial value:

= {
        .xfer_vector = xfer_vectors,
        .max_xfer_size = AMD_SB_SPI_TX_LEN,
        .flags = SPI_CNTRLR_DEDUCT_CMD_LEN,
}

Definition at line 150 of file spi.c.

spi_ctrlr_bus_map

const struct spi_ctrlr_buses spi_ctrlr_bus_map[]

Initial value:

= {
        {
                .ctrlr = &spi_ctrlr,
                .bus_start = 0,
                .bus_end = 0,
        },
}

Definition at line 150 of file spi.c.

spi_ctrlr_bus_map_count

const size_t spi_ctrlr_bus_map_count = ARRAY_SIZE(spi_ctrlr_bus_map)

Definition at line 170 of file spi.c.

spibar

uintptr_t spibar

static

Definition at line 32 of file spi.c.

Referenced by fast_spi_clear_outstanding_status(), fast_spi_lock_bar(), fast_spi_pr_dlock(), fast_spi_set_opcode_menu(), fast_spi_set_strap_msg_data(), fast_spi_vscc0_lock(), spi_init(), spi_read(), and spi_write().