flash_controller.c File Reference

#include <assert.h>
#include <console/console.h>
#include <device/mmio.h>
#include <soc/flash_controller_common.h>
#include <soc/symbols.h>
#include <spi_flash.h>
#include <spi-generic.h>
#include <string.h>
#include <symbols.h>
#include <timer.h>
#include <types.h>

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Macros
#define	GET_NTH_BYTE(d, n)   ((d >> (8 * n)) & 0xff)

Functions
static int	polling_cmd (u32 val)
static int	mtk_nor_execute_cmd (u8 cmdval)
static int	sflashhw_read_flash_status (u8 *value)
static int	wait_for_write_done (void)
static void	set_sfpaddr (u32 addr)
static int	sector_erase (int offset)
static int	dma_read (u32 addr, uintptr_t dma_buf, u32 len)
static int	nor_read (const struct spi_flash *flash, u32 addr, size_t len, void *buf)
static int	nor_write (const struct spi_flash *flash, u32 addr, size_t len, const void *buf)
static int	nor_erase (const struct spi_flash *flash, u32 offset, size_t len)
int	mtk_spi_flash_probe (const struct spi_slave *spi, struct spi_flash *flash)

Variables
static struct mtk_nor_regs *const	mtk_nor = (void *)SFLASH_REG_BASE
const struct spi_flash_ops	spi_flash_ops

Macro Definition Documentation

GET_NTH_BYTE

#define GET_NTH_BYTE	(		d,
			n
	)		((d >> (8 * n)) & 0xff)

Definition at line 17 of file flash_controller.c.

Function Documentation

dma_read()

static int dma_read ( u32  addr, uintptr_t  dma_buf, u32  len  )

static

Definition at line 97 of file flash_controller.c.

References addr, assert, BIOS_WARNING, mtk_nor_regs::fdma_ctl, mtk_nor_regs::fdma_dadr, mtk_nor_regs::fdma_end_dadr, mtk_nor_regs::fdma_fadr, IS_ALIGNED, mtk_nor, printk, read32(), SFLASH_DMA_ALIGN, SFLASH_DMA_SW_RESET, SFLASH_DMA_TRIGGER, SFLASH_DMA_WDLE_EN, SFLASH_POLLINGREG_US, stopwatch_expired(), stopwatch_init_usecs_expire(), and write32().

Referenced by nor_read().

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mtk_nor_execute_cmd()

static int mtk_nor_execute_cmd ( u8  cmdval )

static

Definition at line 33 of file flash_controller.c.

References mtk_nor_regs::cmd, mtk_nor, polling_cmd(), SFLASH_AUTOINC, val, and write8().

Referenced by nor_write(), sector_erase(), and sflashhw_read_flash_status().

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mtk_spi_flash_probe()

int mtk_spi_flash_probe	(	const struct spi_slave *	spi,
		struct spi_flash *	flash
	)

Definition at line 212 of file flash_controller.c.

References spi_flash::erase_cmd, memcpy(), mtk_nor, spi_flash::ops, SECTOR_ERASE_CMD, spi_flash::sector_size, SFLASH_COMMAND_ENABLE, spi_flash::size, spi_flash::spi, spi_flash_ops, write32(), and mtk_nor_regs::wrprot.

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nor_erase()

static int nor_erase ( const struct spi_flash *  flash, u32  offset, size_t  len  )

static

Definition at line 188 of file flash_controller.c.

References BIOS_WARNING, offset, printk, sector_erase(), and spi_flash::sector_size.

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nor_read()

static int nor_read ( const struct spi_flash *  flash, u32  addr, size_t  len, void *  buf  )

static

Definition at line 125 of file flash_controller.c.

References addr, ALIGN_DOWN, ALIGN_UP, buf, CONFIG, dma_coherent(), dma_read(), ENV_BOOTBLOCK, ENV_SEPARATE_VERSTAGE, memcpy(), MIN, mtk_nor, mtk_nor_regs::prgdata, mtk_nor_regs::read_dual, REGION_SIZE, setbits8, SFLASH_1_1_2_READ, SFLASH_DMA_ALIGN, SFLASH_READ_DUAL_EN, stopwatch::start, and write8().

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nor_write()

static int nor_write ( const struct spi_flash *  flash, u32  addr, size_t  len, const void *  buf  )

static

Definition at line 169 of file flash_controller.c.

References addr, buf, buffer, mtk_nor, mtk_nor_execute_cmd(), set_sfpaddr(), SFLASH_AUTOINC, SFLASH_WR_TRIGGER, wait_for_write_done(), mtk_nor_regs::wdata, and write8().

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polling_cmd()

static int polling_cmd ( u32  val )

static

Definition at line 19 of file flash_controller.c.

References mtk_nor_regs::cmd, mtk_nor, read32(), SFLASH_POLLINGREG_US, stopwatch_expired(), stopwatch_init_usecs_expire(), and val.

Referenced by mtk_nor_execute_cmd().

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sector_erase()

static int sector_erase ( int  offset )

static

Definition at line 75 of file flash_controller.c.

References mtk_nor_regs::cnt, GET_NTH_BYTE, mtk_nor, mtk_nor_execute_cmd(), offset, mtk_nor_regs::prgdata, SECTOR_ERASE_CMD, SFLASH_OP_WREN, SFLASH_PRG_CMD, wait_for_write_done(), and write8().

Referenced by nor_erase().

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set_sfpaddr()

static void set_sfpaddr ( u32  addr )

static

Definition at line 68 of file flash_controller.c.

References addr, GET_NTH_BYTE, mtk_nor, mtk_nor_regs::radr, and write8().

Referenced by nor_write().

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sflashhw_read_flash_status()

static int sflashhw_read_flash_status ( u8 *  value )

static

Definition at line 41 of file flash_controller.c.

References mtk_nor, mtk_nor_execute_cmd(), mtk_nor_regs::rdsr, read8(), SFLASH_READSTATUS, and value.

Referenced by wait_for_write_done().

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wait_for_write_done()

static int wait_for_write_done ( void  )

static

Definition at line 50 of file flash_controller.c.

References SFLASH_POLLINGREG_US, SFLASH_WRITE_IN_PROGRESS, sflashhw_read_flash_status(), stopwatch_expired(), and stopwatch_init_usecs_expire().

Referenced by nor_write(), and sector_erase().

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Variable Documentation

mtk_nor

struct mtk_nor_regs* const mtk_nor = (void *)SFLASH_REG_BASE

static

Definition at line 15 of file flash_controller.c.

Referenced by dma_read(), mtk_nor_execute_cmd(), mtk_spi_flash_probe(), nor_read(), nor_write(), polling_cmd(), sector_erase(), set_sfpaddr(), and sflashhw_read_flash_status().

spi_flash_ops

const struct spi_flash_ops spi_flash_ops

Initial value:

= {
        .read = nor_read,
        .write = nor_write,
        .erase = nor_erase,
}

Definition at line 188 of file flash_controller.c.

Referenced by mtk_spi_flash_probe().