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/*
* This file is part of the coreboot project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <console/console.h>
#include <commonlib/helpers.h>
#include <spi_flash.h>
#include <spi-generic.h>
#include <string.h>
#include "spi_flash_internal.h"
/* GD25Pxx-specific commands */
#define CMD_GD25_WREN 0x06 /* Write Enable */
#define CMD_GD25_WRDI 0x04 /* Write Disable */
#define CMD_GD25_RDSR 0x05 /* Read Status Register */
#define CMD_GD25_WRSR 0x01 /* Write Status Register */
#define CMD_GD25_READ 0x03 /* Read Data Bytes */
#define CMD_GD25_FAST_READ 0x0b /* Read Data Bytes at Higher Speed */
#define CMD_GD25_PP 0x02 /* Page Program */
#define CMD_GD25_SE 0x20 /* Sector (4K) Erase */
#define CMD_GD25_BE 0xd8 /* Block (64K) Erase */
#define CMD_GD25_CE 0xc7 /* Chip Erase */
#define CMD_GD25_DP 0xb9 /* Deep Power-down */
#define CMD_GD25_RES 0xab /* Release from DP, and Read Signature */
struct gigadevice_spi_flash_params {
uint16_t id;
uint8_t dual_spi : 1;
uint8_t _reserved_for_flags : 3;
uint8_t l2_page_size_shift : 4;
uint8_t pages_per_sector_shift : 4;
uint8_t sectors_per_block_shift : 4;
uint8_t nr_blocks_shift;
const char name[10];
};
static const struct gigadevice_spi_flash_params gigadevice_spi_flash_table[] = {
{
.id = 0x3114,
.l2_page_size_shift = 8,
.pages_per_sector_shift = 4,
.sectors_per_block_shift = 4,
.nr_blocks_shift = 4,
.name = "GD25T80",
},
{
.id = 0x4014,
.l2_page_size_shift = 8,
.pages_per_sector_shift = 4,
.sectors_per_block_shift = 4,
.nr_blocks_shift = 4,
.dual_spi = 1,
.name = "GD25Q80",
}, /* also GD25Q80B */
{
.id = 0x4015,
.l2_page_size_shift = 8,
.pages_per_sector_shift = 4,
.sectors_per_block_shift = 4,
.nr_blocks_shift = 5,
.dual_spi = 1,
.name = "GD25Q16",
}, /* also GD25Q16B */
{
.id = 0x4016,
.l2_page_size_shift = 8,
.pages_per_sector_shift = 4,
.sectors_per_block_shift = 4,
.nr_blocks_shift = 6,
.dual_spi = 1,
.name = "GD25Q32B",
}, /* also GD25Q32B */
{
.id = 0x4017,
.l2_page_size_shift = 8,
.pages_per_sector_shift = 4,
.sectors_per_block_shift = 4,
.nr_blocks_shift = 7,
.dual_spi = 1,
.name = "GD25Q64",
}, /* also GD25Q64B, GD25B64C */
{
.id = 0x4018,
.l2_page_size_shift = 8,
.pages_per_sector_shift = 4,
.sectors_per_block_shift = 4,
.nr_blocks_shift = 8,
.dual_spi = 1,
.name = "GD25Q128",
}, /* also GD25Q128B */
{
.id = 0x4214,
.l2_page_size_shift = 8,
.pages_per_sector_shift = 4,
.sectors_per_block_shift = 4,
.nr_blocks_shift = 4,
.dual_spi = 1,
.name = "GD25VQ80C",
},
{
.id = 0x4215,
.l2_page_size_shift = 8,
.pages_per_sector_shift = 4,
.sectors_per_block_shift = 4,
.nr_blocks_shift = 5,
.dual_spi = 1,
.name = "GD25VQ16C",
},
{
.id = 0x6014,
.l2_page_size_shift = 8,
.pages_per_sector_shift = 4,
.sectors_per_block_shift = 4,
.nr_blocks_shift = 4,
.dual_spi = 1,
.name = "GD25LQ80",
},
{
.id = 0x6015,
.l2_page_size_shift = 8,
.pages_per_sector_shift = 4,
.sectors_per_block_shift = 4,
.nr_blocks_shift = 5,
.dual_spi = 1,
.name = "GD25LQ16",
},
{
.id = 0x6016,
.l2_page_size_shift = 8,
.pages_per_sector_shift = 4,
.sectors_per_block_shift = 4,
.nr_blocks_shift = 6,
.dual_spi = 1,
.name = "GD25LQ32",
},
{
.id = 0x6017,
.l2_page_size_shift = 8,
.pages_per_sector_shift = 4,
.sectors_per_block_shift = 4,
.nr_blocks_shift = 7,
.dual_spi = 1,
.name = "GD25LQ64C",
}, /* also GD25LB64C */
{
.id = 0x6018,
.l2_page_size_shift = 8,
.pages_per_sector_shift = 4,
.sectors_per_block_shift = 4,
.nr_blocks_shift = 8,
.dual_spi = 1,
.name = "GD25LQ128",
},
};
static const struct spi_flash_ops spi_flash_ops = {
.write = spi_flash_cmd_write_page_program,
.erase = spi_flash_cmd_erase,
.status = spi_flash_cmd_status,
};
int spi_flash_probe_gigadevice(const struct spi_slave *spi, u8 *idcode,
struct spi_flash *flash)
{
const struct gigadevice_spi_flash_params *params;
unsigned int i;
for (i = 0; i < ARRAY_SIZE(gigadevice_spi_flash_table); i++) {
params = &gigadevice_spi_flash_table[i];
if (params->id == ((idcode[1] << 8) | idcode[2]))
break;
}
if (i == ARRAY_SIZE(gigadevice_spi_flash_table)) {
printk(BIOS_WARNING,
"SF gigadevice.c: Unsupported ID %#02x%02x\n",
idcode[1], idcode[2]);
return -1;
}
memcpy(&flash->spi, spi, sizeof(*spi));
flash->name = params->name;
/* Assuming power-of-two page size initially. */
flash->page_size = 1 << params->l2_page_size_shift;
flash->sector_size = flash->page_size *
(1 << params->pages_per_sector_shift);
flash->size = flash->sector_size *
(1 << params->sectors_per_block_shift) *
(1 << params->nr_blocks_shift);
flash->erase_cmd = CMD_GD25_SE;
flash->status_cmd = CMD_GD25_RDSR;
flash->pp_cmd = CMD_GD25_PP;
flash->wren_cmd = CMD_GD25_WREN;
flash->ops = &spi_flash_ops;
return 0;
}
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