diff options
| -rw-r--r-- | src/drivers/spi/Kconfig | 8 | ||||
| -rw-r--r-- | src/drivers/spi/Makefile.inc | 2 | ||||
| -rw-r--r-- | src/drivers/spi/gigadevice.c | 241 | ||||
| -rw-r--r-- | src/drivers/spi/spi_flash.c | 3 | ||||
| -rw-r--r-- | src/drivers/spi/spi_flash_internal.h | 2 |
5 files changed, 256 insertions, 0 deletions
diff --git a/src/drivers/spi/Kconfig b/src/drivers/spi/Kconfig index e022290457..334ee9589f 100644 --- a/src/drivers/spi/Kconfig +++ b/src/drivers/spi/Kconfig @@ -86,3 +86,11 @@ config SPI_FLASH_NO_FAST_READ help Select this option if your setup requires to avoid "fast read"s from the SPI flash parts. + +config SPI_FLASH_GIGADEVICE + bool + default y + depends on SPI_FLASH + help + Select this option if your chipset driver needs to store certain + data in the SPI flash and your SPI flash is made by Gigadevice. diff --git a/src/drivers/spi/Makefile.inc b/src/drivers/spi/Makefile.inc index 7f94abd269..1a34ab54cf 100644 --- a/src/drivers/spi/Makefile.inc +++ b/src/drivers/spi/Makefile.inc @@ -8,6 +8,7 @@ ramstage-$(CONFIG_SPI_FLASH_SPANSION) += spansion.c ramstage-$(CONFIG_SPI_FLASH_SST) += sst.c ramstage-$(CONFIG_SPI_FLASH_STMICRO) += stmicro.c ramstage-$(CONFIG_SPI_FLASH_WINBOND) += winbond.c +ramstage-$(CONFIG_SPI_FLASH_GIGADEVICE) += gigadevice.c ramstage-$(CONFIG_SPI_FRAM_RAMTRON) += ramtron.c ifeq ($(CONFIG_SPI_FLASH_SMM),y) @@ -22,4 +23,5 @@ smm-$(CONFIG_SPI_FLASH_SST) += sst.c smm-$(CONFIG_SPI_FLASH_STMICRO) += stmicro.c smm-$(CONFIG_SPI_FLASH_WINBOND) += winbond.c smm-$(CONFIG_SPI_FRAM_RAMTRON) += ramtron.c +smm-$(CONFIG_SPI_FLASH_GIGADEVICE) += gigadevice.c endif
\ No newline at end of file diff --git a/src/drivers/spi/gigadevice.c b/src/drivers/spi/gigadevice.c new file mode 100644 index 0000000000..8454705b69 --- /dev/null +++ b/src/drivers/spi/gigadevice.c @@ -0,0 +1,241 @@ +/* + * Copyright (c) 2012, Google Inc. + * + * Based on drivers/spi/winbond.c + * + * Copyright 2008, Network Appliance Inc. + * Jason McMullan <mcmullan@netapp.com> + * + * See file CREDITS for list of people who contributed to this + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, + * MA 02110-1301 USA + */ + + +#include <stdlib.h> +#include <spi_flash.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; + /* 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; +}; + +/* spi_flash needs to be first so upper layers can free() it */ +struct gigadevice_spi_flash { + struct spi_flash flash; + const struct gigadevice_spi_flash_params *params; +}; + +static inline struct gigadevice_spi_flash * +to_gigadevice_spi_flash(struct spi_flash *flash) +{ + return container_of(flash, struct gigadevice_spi_flash, flash); +} + +static const struct gigadevice_spi_flash_params gigadevice_spi_flash_table[] = { + { + .id = 0x4014, + .l2_page_size = 8, + .pages_per_sector = 16, + .sectors_per_block = 16, + .nr_blocks = 16, + .name = "GD25Q80", + }, + { + .id = 0x4015, + .l2_page_size = 8, + .pages_per_sector = 16, + .sectors_per_block = 16, + .nr_blocks = 32, + .name = "GD25Q16(B)", + }, + { + .id = 0x4016, + .l2_page_size = 8, + .pages_per_sector = 16, + .sectors_per_block = 16, + .nr_blocks = 64, + .name = "GD25Q32(B)", + }, + { + .id = 0x6016, + .l2_page_size = 8, + .pages_per_sector = 16, + .sectors_per_block = 16, + .nr_blocks = 64, + .name = "GD25LQ32", + }, + { + .id = 0x4017, + .l2_page_size = 8, + .pages_per_sector = 16, + .sectors_per_block = 16, + .nr_blocks = 128, + .name = "GD25Q64(B)", + }, + { + .id = 0x4018, + .l2_page_size = 8, + .pages_per_sector = 16, + .sectors_per_block = 16, + .nr_blocks = 256, + .name = "GD25Q128(B)", + }, +}; + +static int gigadevice_write(struct spi_flash *flash, u32 offset, + size_t len, const void *buf) +{ + struct gigadevice_spi_flash *stm = to_gigadevice_spi_flash(flash); + unsigned long byte_addr; + unsigned long page_size; + size_t chunk_len; + size_t actual; + int ret; + u8 cmd[4]; + + page_size = min(1 << stm->params->l2_page_size, CONTROLLER_PAGE_LIMIT); + byte_addr = offset % page_size; + + ret = spi_claim_bus(flash->spi); + if (ret) { + printk(BIOS_WARNING, + "SF gigadevice.c: Unable to claim SPI bus\n"); + return ret; + } + + for (actual = 0; actual < len; actual += chunk_len) { + chunk_len = min(len - actual, page_size - byte_addr); + + ret = spi_flash_cmd(flash->spi, CMD_GD25_WREN, NULL, 0); + if (ret < 0) { + printk(BIOS_WARNING, + "SF gigadevice.c: Enabling Write failed\n"); + goto out; + } + + cmd[0] = CMD_GD25_PP; + cmd[1] = (offset >> 16) & 0xff; + cmd[2] = (offset >> 8) & 0xff; + cmd[3] = offset & 0xff; +#if CONFIG_DEBUG_SPI_FLASH + printk(BIOS_SPEW, + "PP gigadevice.c: %#p => cmd = { %#02x %#02x%02x%02x }" + " chunk_len = %zu\n", buf + actual, + cmd[0], cmd[1], cmd[2], cmd[3], chunk_len); +#endif + + ret = spi_flash_cmd_write(flash->spi, cmd, 4, + buf + actual, chunk_len); + if (ret < 0) { + printk(BIOS_WARNING, + "SF gigadevice.c: Page Program failed\n"); + goto out; + } + + ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT); + if (ret) + goto out; + + offset += chunk_len; + byte_addr = 0; + } + + printk(BIOS_INFO, + "SF gigadevice.c: Successfully programmed %zu bytes @ %#x\n", + len, (unsigned int)(offset - len)); + ret = 0; + +out: + spi_release_bus(flash->spi); + return ret; +} + +static int gigadevice_erase(struct spi_flash *flash, u32 offset, size_t len) +{ + return spi_flash_cmd_erase(flash, CMD_GD25_SE, offset, len); +} + +struct spi_flash *spi_flash_probe_gigadevice(struct spi_slave *spi, u8 *idcode) +{ + const struct gigadevice_spi_flash_params *params; + unsigned page_size; + struct gigadevice_spi_flash *stm; + 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 NULL; + } + + stm = malloc(sizeof(struct gigadevice_spi_flash)); + if (!stm) { + printk(BIOS_WARNING, + "SF gigadevice.c: Failed to allocate memory\n"); + return NULL; + } + + stm->params = params; + stm->flash.spi = spi; + stm->flash.name = params->name; + + /* Assuming power-of-two page size initially. */ + page_size = 1 << params->l2_page_size; + + stm->flash.write = gigadevice_write; + stm->flash.erase = gigadevice_erase; +#ifdef CONFIG_SPI_FLASH_NO_FAST_READ + stm->flash.read = spi_flash_cmd_read_slow; +#else + stm->flash.read = spi_flash_cmd_read_fast; +#endif + stm->flash.sector_size = (1 << stm->params->l2_page_size) * + stm->params->pages_per_sector; + stm->flash.size = page_size * params->pages_per_sector + * params->sectors_per_block + * params->nr_blocks; + + return &stm->flash; +} diff --git a/src/drivers/spi/spi_flash.c b/src/drivers/spi/spi_flash.c index 78c209d865..4757486bf5 100644 --- a/src/drivers/spi/spi_flash.c +++ b/src/drivers/spi/spi_flash.c @@ -218,6 +218,9 @@ static struct { #if CONFIG_SPI_FLASH_EON { 0, 0x1c, spi_flash_probe_eon, }, #endif +#if CONFIG_SPI_FLASH_GIGADEVICE + { 0, 0xc8, spi_flash_probe_gigadevice, }, +#endif #if CONFIG_SPI_FLASH_MACRONIX { 0, 0xc2, spi_flash_probe_macronix, }, #endif diff --git a/src/drivers/spi/spi_flash_internal.h b/src/drivers/spi/spi_flash_internal.h index b895e2b4f3..37ffee64f8 100644 --- a/src/drivers/spi/spi_flash_internal.h +++ b/src/drivers/spi/spi_flash_internal.h @@ -78,4 +78,6 @@ struct spi_flash *spi_flash_probe_macronix(struct spi_slave *spi, u8 *idcode); struct spi_flash *spi_flash_probe_sst(struct spi_slave *spi, u8 *idcode); struct spi_flash *spi_flash_probe_stmicro(struct spi_slave *spi, u8 *idcode); struct spi_flash *spi_flash_probe_winbond(struct spi_slave *spi, u8 *idcode); +struct spi_flash *spi_flash_probe_gigadevice(struct spi_slave *spi, + u8 *idcode); struct spi_flash *spi_fram_probe_ramtron(struct spi_slave *spi, u8 *idcode); |