mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-24 11:59:46 +09:00
b06afa75fa
Now that the common spi_flash structure tracks all the info that these drivers need, kill off their local state indirection and use just what the common code provides. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
143 lines
3.3 KiB
C
143 lines
3.3 KiB
C
/*
|
|
* Copyright 2008, Network Appliance Inc.
|
|
* Author: Jason McMullan <mcmullan <at> netapp.com>
|
|
* Licensed under the GPL-2 or later.
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <malloc.h>
|
|
#include <spi_flash.h>
|
|
|
|
#include "spi_flash_internal.h"
|
|
|
|
/* M25Pxx-specific commands */
|
|
#define CMD_W25_WREN 0x06 /* Write Enable */
|
|
#define CMD_W25_WRDI 0x04 /* Write Disable */
|
|
#define CMD_W25_RDSR 0x05 /* Read Status Register */
|
|
#define CMD_W25_WRSR 0x01 /* Write Status Register */
|
|
#define CMD_W25_READ 0x03 /* Read Data Bytes */
|
|
#define CMD_W25_FAST_READ 0x0b /* Read Data Bytes at Higher Speed */
|
|
#define CMD_W25_PP 0x02 /* Page Program */
|
|
#define CMD_W25_SE 0x20 /* Sector (4K) Erase */
|
|
#define CMD_W25_BE 0xd8 /* Block (64K) Erase */
|
|
#define CMD_W25_CE 0xc7 /* Chip Erase */
|
|
#define CMD_W25_DP 0xb9 /* Deep Power-down */
|
|
#define CMD_W25_RES 0xab /* Release from DP, and Read Signature */
|
|
|
|
struct winbond_spi_flash_params {
|
|
uint16_t id;
|
|
/* Log2 of page size in power-of-two mode */
|
|
uint8_t l2_page_size;
|
|
uint16_t pages_per_sector;
|
|
uint16_t sectors_per_block;
|
|
uint16_t nr_blocks;
|
|
const char *name;
|
|
};
|
|
|
|
static const struct winbond_spi_flash_params winbond_spi_flash_table[] = {
|
|
{
|
|
.id = 0x3015,
|
|
.l2_page_size = 8,
|
|
.pages_per_sector = 16,
|
|
.sectors_per_block = 16,
|
|
.nr_blocks = 32,
|
|
.name = "W25X16",
|
|
},
|
|
{
|
|
.id = 0x3016,
|
|
.l2_page_size = 8,
|
|
.pages_per_sector = 16,
|
|
.sectors_per_block = 16,
|
|
.nr_blocks = 64,
|
|
.name = "W25X32",
|
|
},
|
|
{
|
|
.id = 0x3017,
|
|
.l2_page_size = 8,
|
|
.pages_per_sector = 16,
|
|
.sectors_per_block = 16,
|
|
.nr_blocks = 128,
|
|
.name = "W25X64",
|
|
},
|
|
{
|
|
.id = 0x4015,
|
|
.l2_page_size = 8,
|
|
.pages_per_sector = 16,
|
|
.sectors_per_block = 16,
|
|
.nr_blocks = 32,
|
|
.name = "W25Q16",
|
|
},
|
|
{
|
|
.id = 0x4016,
|
|
.l2_page_size = 8,
|
|
.pages_per_sector = 16,
|
|
.sectors_per_block = 16,
|
|
.nr_blocks = 64,
|
|
.name = "W25Q32",
|
|
},
|
|
{
|
|
.id = 0x4017,
|
|
.l2_page_size = 8,
|
|
.pages_per_sector = 16,
|
|
.sectors_per_block = 16,
|
|
.nr_blocks = 128,
|
|
.name = "W25Q64",
|
|
},
|
|
{
|
|
.id = 0x4018,
|
|
.l2_page_size = 8,
|
|
.pages_per_sector = 16,
|
|
.sectors_per_block = 16,
|
|
.nr_blocks = 256,
|
|
.name = "W25Q128",
|
|
},
|
|
};
|
|
|
|
static int winbond_erase(struct spi_flash *flash, u32 offset, size_t len)
|
|
{
|
|
return spi_flash_cmd_erase(flash, CMD_W25_SE, offset, len);
|
|
}
|
|
|
|
struct spi_flash *spi_flash_probe_winbond(struct spi_slave *spi, u8 *idcode)
|
|
{
|
|
const struct winbond_spi_flash_params *params;
|
|
struct spi_flash *flash;
|
|
unsigned int i;
|
|
unsigned page_size;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(winbond_spi_flash_table); i++) {
|
|
params = &winbond_spi_flash_table[i];
|
|
if (params->id == ((idcode[1] << 8) | idcode[2]))
|
|
break;
|
|
}
|
|
|
|
if (i == ARRAY_SIZE(winbond_spi_flash_table)) {
|
|
debug("SF: Unsupported Winbond ID %02x%02x\n",
|
|
idcode[1], idcode[2]);
|
|
return NULL;
|
|
}
|
|
|
|
flash = malloc(sizeof(*flash));
|
|
if (!flash) {
|
|
debug("SF: Failed to allocate memory\n");
|
|
return NULL;
|
|
}
|
|
|
|
flash->spi = spi;
|
|
flash->name = params->name;
|
|
|
|
/* Assuming power-of-two page size initially. */
|
|
page_size = 1 << params->l2_page_size;
|
|
|
|
flash->write = spi_flash_cmd_write_multi;
|
|
flash->erase = winbond_erase;
|
|
flash->read = spi_flash_cmd_read_fast;
|
|
flash->page_size = page_size;
|
|
flash->sector_size = page_size * params->pages_per_sector;
|
|
flash->size = page_size * params->pages_per_sector
|
|
* params->sectors_per_block
|
|
* params->nr_blocks;
|
|
|
|
return flash;
|
|
}
|