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-rw-r--r--src/drivers/spi/Kconfig8
-rw-r--r--src/drivers/spi/Makefile.inc2
-rw-r--r--src/drivers/spi/gigadevice.c241
-rw-r--r--src/drivers/spi/spi_flash.c3
-rw-r--r--src/drivers/spi/spi_flash_internal.h2
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);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-28 14:12:16 +0000