/* * 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. */ /* * Driver for Adesto Technologies SPI flash * based on winbond.c */ #include <console/console.h> #include <commonlib/helpers.h> #include <string.h> #include <spi_flash.h> #include <spi-generic.h> #include "spi_flash_internal.h" /* at25dfxx-specific commands */ #define CMD_AT25DF_WREN 0x06 /* Write Enable */ #define CMD_AT25DF_WRDI 0x04 /* Write Disable */ #define CMD_AT25DF_RDSR 0x05 /* Read Status Register */ #define CMD_AT25DF_WRSR 0x01 /* Write Status Register */ #define CMD_AT25DF_READ 0x03 /* Read Data Bytes */ #define CMD_AT25DF_FAST_READ 0x0b /* Read Data Bytes at Higher Speed */ #define CMD_AT25DF_PP 0x02 /* Page Program */ #define CMD_AT25DF_SE 0x20 /* Sector (4K) Erase */ #define CMD_AT25DF_BE 0xd8 /* Block (64K) Erase */ #define CMD_AT25DF_CE 0xc7 /* Chip Erase */ #define CMD_AT25DF_DP 0xb9 /* Deep Power-down */ #define CMD_AT25DF_RES 0xab /* Release from DP, and Read Signature */ struct adesto_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 adesto_spi_flash_params adesto_spi_flash_table[] = { { .id = 0x4218, .l2_page_size = 8, .pages_per_sector = 16, .sectors_per_block = 16, .nr_blocks = 256, .name = "AT25SL128A", }, { .id = 0x4501, .l2_page_size = 8, .pages_per_sector = 16, .sectors_per_block = 16, .nr_blocks = 16, .name = "AT25DF081A", /* Yes, 81A id < 81 */ }, { .id = 0x4502, .l2_page_size = 8, .pages_per_sector = 16, .sectors_per_block = 16, .nr_blocks = 16, .name = "AT25DF081", }, { .id = 0x4602, .l2_page_size = 8, .pages_per_sector = 16, .sectors_per_block = 16, .nr_blocks = 32, .name = "AT25DF161", }, { .id = 0x4603, .l2_page_size = 8, .pages_per_sector = 16, .sectors_per_block = 16, .nr_blocks = 32, .name = "AT25DL161", }, { .id = 0x4700, .l2_page_size = 8, .pages_per_sector = 16, .sectors_per_block = 16, .nr_blocks = 64, .name = "AT25DF321", }, { .id = 0x4701, .l2_page_size = 8, .pages_per_sector = 16, .sectors_per_block = 16, .nr_blocks = 64, .name = "AT25DF321A", }, { .id = 0x4800, .l2_page_size = 8, .pages_per_sector = 16, .sectors_per_block = 16, .nr_blocks = 128, .name = "AT25DF641", }, { .id = 0x8501, .l2_page_size = 8, .pages_per_sector = 16, .sectors_per_block = 16, .nr_blocks = 16, .name = "AT25SF081", }, { .id = 0x8600, .l2_page_size = 8, .pages_per_sector = 16, .sectors_per_block = 16, .nr_blocks = 32, .name = "AT25DQ161", }, { .id = 0x8601, .l2_page_size = 8, .pages_per_sector = 16, .sectors_per_block = 16, .nr_blocks = 32, .name = "AT25SF161", }, { .id = 0x8700, .l2_page_size = 8, .pages_per_sector = 16, .sectors_per_block = 16, .nr_blocks = 64, .name = "AT25DQ321", }, }; 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_adesto(const struct spi_slave *spi, u8 *idcode, struct spi_flash *flash) { const struct adesto_spi_flash_params *params; unsigned int i; for (i = 0; i < ARRAY_SIZE(adesto_spi_flash_table); i++) { params = &adesto_spi_flash_table[i]; if (params->id == ((idcode[1] << 8) | idcode[2])) break; } if (i == ARRAY_SIZE(adesto_spi_flash_table)) { printk(BIOS_WARNING, "SF: Unsupported adesto 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_AT25DF_SE; flash->status_cmd = CMD_AT25DF_RDSR; flash->pp_cmd = CMD_AT25DF_PP; flash->wren_cmd = CMD_AT25DF_WREN; flash->ops = &spi_flash_ops; return 0; }