winbond.c File Reference

#include <console/console.h>
#include <commonlib/helpers.h>
#include <spi_flash.h>
#include <spi-generic.h>
#include <delay.h>
#include <lib.h>
#include "spi_flash_internal.h"
#include "spi_winbond.h"

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Data Structures
union	status_reg1
union	status_reg2
struct	status_regs

Functions
static void	winbond_bpbits_to_region (const size_t granularity, const u8 bp, bool tb, const bool cmp, const size_t flash_size, struct region *out)
static int	winbond_get_write_protection (const struct spi_flash *flash, const struct region *region)
static int	winbond_flash_cmd_status (const struct spi_flash *flash, const u16 mask, const u16 val, const bool non_volatile)
	Common method to write some bit of the status register 1 & 2 at the same time. More...
static int	winbond_set_write_protection (const struct spi_flash *flash, const struct region *region, const enum spi_flash_status_reg_lockdown mode)

Variables
static const struct spi_flash_part_id	flash_table []
static const struct spi_flash_protection_ops	spi_flash_protection_ops
const struct spi_flash_vendor_info	spi_flash_winbond_vi

Function Documentation

winbond_bpbits_to_region()

static void winbond_bpbits_to_region ( const size_t  granularity, const u8  bp, bool  tb, const bool  cmp, const size_t  flash_size, struct region *  out  )

static

Definition at line 238 of file winbond.c.

References MIN, region::offset, and region::size.

Referenced by winbond_get_write_protection().

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winbond_flash_cmd_status()

static int winbond_flash_cmd_status ( const struct spi_flash *  flash, const u16  mask, const u16  val, const bool  non_volatile  )

static

Common method to write some bit of the status register 1 & 2 at the same time.

Only change bits that are one in @mask. Compare the final result to make sure that the register isn't locked.

Parameters

mask	The bits that are affected by @val
val	The bits to write
non_volatile	Make setting permanent

Returns

0 on success

Definition at line 337 of file winbond.c.

References BIOS_DEBUG, BIOS_ERR, CMD_VOLATILE_SREG_WREN, CMD_W25_RDSR, CMD_W25_RDSR2, CMD_W25_WREN, CMD_W25_WRSR, mask, NULL, printk, spi_flash::spi, spi_flash_cmd(), spi_flash_cmd_wait_ready(), spi_flash_cmd_write(), udelay(), val, and WINBOND_FLASH_TIMEOUT.

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winbond_get_write_protection()

static int winbond_get_write_protection ( const struct spi_flash *  flash, const struct region *  region  )

static

Definition at line 267 of file winbond.c.

References BIOS_DEBUG, status_reg1::bp, status_reg1::bp3, status_reg1::bp4, CMD_W25_RDSR2, status_reg2::cmp, params, spi_flash::part, printk, region_end(), region_is_subregion(), region_offset(), region_sz(), status_reg1::sec, spi_flash::size, spi_flash::spi, spi_flash_cmd(), spi_flash::status_cmd, status_reg1::tb, status_reg1::u, status_reg2::u, and winbond_bpbits_to_region().

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winbond_set_write_protection()

static int winbond_set_write_protection ( const struct spi_flash *  flash, const struct region *  region, const enum spi_flash_status_reg_lockdown  mode  )

static

Definition at line 438 of file winbond.c.

Variable Documentation

flash_table

const struct spi_flash_part_id flash_table[]

static

Definition at line 1 of file winbond.c.

spi_flash_protection_ops

const struct spi_flash_protection_ops spi_flash_protection_ops

static

Initial value:

= {
        .get_write = winbond_get_write_protection,
        .set_write = winbond_set_write_protection,
}

Definition at line 438 of file winbond.c.

spi_flash_winbond_vi

const struct spi_flash_vendor_info spi_flash_winbond_vi

Initial value:

= {
        .id = VENDOR_ID_WINBOND,
        .page_size_shift = 8,
        .sector_size_kib_shift = 2,
        .match_id_mask[0] = 0xffff,
        .ids = flash_table,
        .nr_part_ids = ARRAY_SIZE(flash_table),
        .desc = &spi_flash_pp_0x20_sector_desc,
        .prot_ops = &spi_flash_protection_ops,
}

Definition at line 438 of file winbond.c.