blob: e30ed4894d2478529f92181ec78686bb832dda56 [file] [log] [blame]
/*
* 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"
/* A25L-specific commands */
#define CMD_A25_WREN 0x06 /* Write Enable */
#define CMD_A25_WRDI 0x04 /* Write Disable */
#define CMD_A25_RDSR 0x05 /* Read Status Register */
#define CMD_A25_WRSR 0x01 /* Write Status Register */
#define CMD_A25_READ 0x03 /* Read Data Bytes */
#define CMD_A25_FAST_READ 0x0b /* Read Data Bytes at Higher Speed */
#define CMD_A25_PP 0x02 /* Page Program */
#define CMD_A25_SE 0x20 /* Sector (4K) Erase */
#define CMD_A25_BE 0xd8 /* Block (64K) Erase */
#define CMD_A25_CE 0xc7 /* Chip Erase */
#define CMD_A25_DP 0xb9 /* Deep Power-down */
#define CMD_A25_RES 0xab /* Release from DP, and Read Signature */
struct amic_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 amic_spi_flash_params amic_spi_flash_table[] = {
{
.id = 0x2015,
.l2_page_size = 8,
.pages_per_sector = 16,
.sectors_per_block = 16,
.nr_blocks = 32,
.name = "A25L16PU",
},
{
.id = 0x2025,
.l2_page_size = 8,
.pages_per_sector = 16,
.sectors_per_block = 16,
.nr_blocks = 32,
.name = "A25L16PT",
},
{
.id = 0x3014,
.l2_page_size = 8,
.pages_per_sector = 16,
.sectors_per_block = 16,
.nr_blocks = 16,
.name = "A25L080",
},
{
.id = 0x3015,
.l2_page_size = 8,
.pages_per_sector = 16,
.sectors_per_block = 16,
.nr_blocks = 32,
.name = "A25L016",
},
{
.id = 0x3016,
.l2_page_size = 8,
.pages_per_sector = 16,
.sectors_per_block = 16,
.nr_blocks = 64,
.name = "A25L032",
},
{
.id = 0x4014,
.l2_page_size = 8,
.pages_per_sector = 16,
.sectors_per_block = 16,
.nr_blocks = 16,
.name = "A25LQ080",
},
{
.id = 0x4015,
.l2_page_size = 8,
.pages_per_sector = 16,
.sectors_per_block = 16,
.nr_blocks = 32,
.name = "A25LQ16",
},
{
.id = 0x4016,
.l2_page_size = 8,
.pages_per_sector = 16,
.sectors_per_block = 16,
.nr_blocks = 64,
.name = "A25LQ032",
},
{
.id = 0x4017,
.l2_page_size = 8,
.pages_per_sector = 16,
.sectors_per_block = 16,
.nr_blocks = 128,
.name = "A25LQ64",
},
};
static const struct spi_flash_ops spi_flash_ops = {
.read = spi_flash_cmd_read,
.write = spi_flash_cmd_write_page_program,
.erase = spi_flash_cmd_erase,
.status = spi_flash_cmd_status,
};
int spi_flash_probe_amic(const struct spi_slave *spi, u8 *idcode,
struct spi_flash *flash)
{
const struct amic_spi_flash_params *params;
unsigned int i;
for (i = 0; i < ARRAY_SIZE(amic_spi_flash_table); i++) {
params = &amic_spi_flash_table[i];
if (params->id == ((idcode[1] << 8) | idcode[2]))
break;
}
if (i == ARRAY_SIZE(amic_spi_flash_table)) {
printk(BIOS_WARNING, "SF: Unsupported AMIC 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;
flash->sector_size = flash->page_size * params->pages_per_sector;
flash->size = flash->sector_size * params->sectors_per_block *
params->nr_blocks;
flash->erase_cmd = CMD_A25_SE;
flash->status_cmd = CMD_A25_RDSR;
flash->pp_cmd = CMD_A25_PP;
flash->wren_cmd = CMD_A25_WREN;
flash->ops = &spi_flash_ops;
return 0;
}