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flash: use two bytes of device ID to identify stmicro chips 

stmicro flash chips use 2 bytes as a device id: upper byte for memory
type and lower byte for capacity. with this change, we will use all 2
bytes to identify a chip.

BUG=none
BRANCH=broadcom-firmware
TEST=booted purin and verified n25q256a was identified.

Change-Id: I8f382eddc4fa70d3deceb4f9d2e82026a7025629
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 12f70a1d4b7e1142afec9ce097c4a21b6225f66e
Original-Change-Id: Id3378a77318fabb74ddb30f1a9549010636872ba
Original-Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Original-Reviewed-on: https://chrome-internal-review.googlesource.com/199387
Original-Reviewed-by: Corneliu Doban <cdoban@broadcom.com>
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Original-Commit-Queue: Daisuke Nojiri <dnojiri@google.com>
Original-Tested-by: Daisuke Nojiri <dnojiri@google.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/251305
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Original-Reviewed-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: http://review.coreboot.org/9774
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Edward O'Callaghan <edward.ocallaghan@koparo.com>
This commit is contained in:
Daisuke Nojiri 2015-02-17 13:35:20 -08:00 committed by Patrick Georgi
parent 7dcc48b75d
commit f0d038f469
1 changed files with 34 additions and 30 deletions
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64
src/drivers/spi/stmicro.c
View File

@ -46,15 +46,19 @@
#define CMD_M25PXX_DP 0xb9 /* Deep Power-down */
#define CMD_M25PXX_RES 0xab /* Release from DP, and Read Signature */
#define STM_ID_M25P10 0x11
#define STM_ID_M25P16 0x15
#define STM_ID_M25P20 0x12
#define STM_ID_M25P32 0x16
#define STM_ID_M25P40 0x13
#define STM_ID_M25P64 0x17
#define STM_ID_M25P80 0x14
#define STM_ID_M25P128 0x18
#define STM_ID_USE_ALT_ID 0xFF
/*
* Device ID = (memory_type << 8) + memory_capacity
*/
#define STM_ID_M25P10 0x2011
#define STM_ID_M25P16 0x2015
#define STM_ID_M25P20 0x2012
#define STM_ID_M25P32 0x2016
#define STM_ID_M25P40 0x2013
#define STM_ID_M25P64 0x2017
#define STM_ID_M25P80 0x2014
#define STM_ID_M25P128 0x2018
#define STM_ID_N25Q256A 0xba19
#define STM_ID_N25Q128 0xbb18
/* Some SPI flash share the same .idcode1 (idcode[2]). To handle this without
* (possibly) breaking existing implementations, add the new device at the top
@ -62,9 +66,8 @@
* is then (idcode[1] << 8 | idcode[2]).
*/
struct stmicro_spi_flash_params {
u8 idcode1;
u16 device_id;
u8 op_erase;
u16 id;
u16 page_size;
u16 pages_per_sector;
u16 nr_sectors;
@ -85,8 +88,7 @@ static inline struct stmicro_spi_flash *to_stmicro_spi_flash(struct spi_flash
static const struct stmicro_spi_flash_params stmicro_spi_flash_table[] = {
{
.idcode1 = STM_ID_USE_ALT_ID,
.id = 0xbb18,
.device_id = STM_ID_N25Q128,
.op_erase = CMD_M25PXX_SSE,
.page_size = 256,
.pages_per_sector = 16,
@ -94,7 +96,7 @@ static const struct stmicro_spi_flash_params stmicro_spi_flash_table[] = {
.name = "N25Q128",
},
{
.idcode1 = STM_ID_M25P10,
.device_id = STM_ID_M25P10,
.op_erase = CMD_M25PXX_SE,
.page_size = 256,
.pages_per_sector = 128,
@ -102,7 +104,7 @@ static const struct stmicro_spi_flash_params stmicro_spi_flash_table[] = {
.name = "M25P10",
},
{
.idcode1 = STM_ID_M25P16,
.device_id = STM_ID_M25P16,
.op_erase = CMD_M25PXX_SE,
.page_size = 256,
.pages_per_sector = 256,
@ -110,7 +112,7 @@ static const struct stmicro_spi_flash_params stmicro_spi_flash_table[] = {
.name = "M25P16",
},
{
.idcode1 = STM_ID_M25P20,
.device_id = STM_ID_M25P20,
.op_erase = CMD_M25PXX_SE,
.page_size = 256,
.pages_per_sector = 256,
@ -118,7 +120,7 @@ static const struct stmicro_spi_flash_params stmicro_spi_flash_table[] = {
.name = "M25P20",
},
{
.idcode1 = STM_ID_M25P32,
.device_id = STM_ID_M25P32,
.op_erase = CMD_M25PXX_SE,
.page_size = 256,
.pages_per_sector = 256,
@ -126,7 +128,7 @@ static const struct stmicro_spi_flash_params stmicro_spi_flash_table[] = {
.name = "M25P32",
},
{
.idcode1 = STM_ID_M25P40,
.device_id = STM_ID_M25P40,
.op_erase = CMD_M25PXX_SE,
.page_size = 256,
.pages_per_sector = 256,
@ -134,7 +136,7 @@ static const struct stmicro_spi_flash_params stmicro_spi_flash_table[] = {
.name = "M25P40",
},
{
.idcode1 = STM_ID_M25P64,
.device_id = STM_ID_M25P64,
.op_erase = CMD_M25PXX_SE,
.page_size = 256,
.pages_per_sector = 256,
@ -142,7 +144,7 @@ static const struct stmicro_spi_flash_params stmicro_spi_flash_table[] = {
.name = "M25P64",
},
{
.idcode1 = STM_ID_M25P80,
.device_id = STM_ID_M25P80,
.op_erase = CMD_M25PXX_SE,
.page_size = 256,
.pages_per_sector = 256,
@ -150,13 +152,20 @@ static const struct stmicro_spi_flash_params stmicro_spi_flash_table[] = {
.name = "M25P80",
},
{
.idcode1 = STM_ID_M25P128,
.device_id = STM_ID_M25P128,
.op_erase = CMD_M25PXX_SE,
.page_size = 256,
.pages_per_sector = 1024,
.nr_sectors = 64,
.name = "M25P128",
},
{
.device_id = STM_ID_N25Q256A,
.page_size = 256,
.pages_per_sector = 256,
.nr_sectors = 512,
.name = "N25Q256A",
},
};
static int stmicro_write(struct spi_flash *flash,
@ -229,8 +238,7 @@ struct spi_flash *spi_flash_probe_stmicro(struct spi_slave *spi, u8 * idcode)
unsigned int i;
if (idcode[0] == 0xff) {
i = spi_flash_cmd(spi, CMD_M25PXX_RES,
idcode, 4);
i = spi_flash_cmd(spi, CMD_M25PXX_RES, idcode, 4);
if (i)
return NULL;
if ((idcode[3] & 0xf0) == 0x10) {
@ -243,18 +251,14 @@ struct spi_flash *spi_flash_probe_stmicro(struct spi_slave *spi, u8 * idcode)
for (i = 0; i < ARRAY_SIZE(stmicro_spi_flash_table); i++) {
params = &stmicro_spi_flash_table[i];
if (params->idcode1 == STM_ID_USE_ALT_ID) {
if (params->id == ((idcode[1] << 8) | idcode[2])) {
break;
}
}
else if (params->idcode1 == idcode[2]) {
if (params->device_id == (idcode[1] << 8 | idcode[2])) {
break;
}
}
if (i == ARRAY_SIZE(stmicro_spi_flash_table)) {
printk(BIOS_WARNING, "SF: Unsupported STMicro ID %02x\n", idcode[1]);
printk(BIOS_WARNING, "SF: Unsupported STMicro ID %02x%02x\n",
idcode[1], idcode[2]);
return NULL;
}