[U-Boot] [PATCH 02/12] sf: probe: Add new spi_flash_probe support
Jagannadha Sutradharudu Teki
jagannadha.sutradharudu-teki at xilinx.com
Sun Aug 4 23:20:25 CEST 2013
Added new spi_flash_probe support, currently added N25Q*
flash part attributes support.
Defined CONFIG_SPI_FLASH_LEGACY for old probing style
which is available on spi_flash_probe_legacy.c, this will
removed soon once all flashes are supported in new spi_flash_probe.
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna at xilinx.com>
---
drivers/mtd/spi/Makefile | 1 +
drivers/mtd/spi/spi_flash_probe.c | 226 ++++++++++++-------------
drivers/mtd/spi/spi_flash_probe_legacy.c | 274 +++++++++++++++++++++++++++++++
3 files changed, 380 insertions(+), 121 deletions(-)
create mode 100644 drivers/mtd/spi/spi_flash_probe_legacy.c
diff --git a/drivers/mtd/spi/Makefile b/drivers/mtd/spi/Makefile
index 0304b12..188fb98 100644
--- a/drivers/mtd/spi/Makefile
+++ b/drivers/mtd/spi/Makefile
@@ -13,6 +13,7 @@ ifdef CONFIG_SPL_BUILD
COBJS-$(CONFIG_SPL_SPI_LOAD) += spi_spl_load.o
endif
+COBJS-$(CONFIG_SPI_FLASH_LEGACY) += spi_flash_legacy.o spi_flash_ops.o spi_flash.o
COBJS-$(CONFIG_SPI_FLASH) += spi_flash_probe.o spi_flash_ops.o spi_flash.o
COBJS-$(CONFIG_SPI_FLASH_ATMEL) += atmel.o
COBJS-$(CONFIG_SPI_FLASH_EON) += eon.o
diff --git a/drivers/mtd/spi/spi_flash_probe.c b/drivers/mtd/spi/spi_flash_probe.c
index fedc81e..8536c08 100644
--- a/drivers/mtd/spi/spi_flash_probe.c
+++ b/drivers/mtd/spi/spi_flash_probe.c
@@ -18,6 +18,94 @@
DECLARE_GLOBAL_DATA_PTR;
+/*
+ * struct spi_flash_ids - SPI/QSPI flash Device ID structure
+ *
+ * @name: Device name ([MANUFLETTER][DEVTYPE][DENSITY][EXTRAINFO])
+ * @jedec: Device jedec ID (0x[1byte_manuf_id][2byte_dev_id])
+ * @ext_jedec: Device ext_jedec ID
+ * @sector_size: Sector size of this device
+ * @nr_sectors: No.of sectors on this device
+ */
+static const struct {
+ const char *name;
+ u32 jedec;
+ u16 ext_jedec;
+ u32 sector_size;
+ u32 nr_sectors;
+} spi_flash_ids[] = {
+ /* STMICRO */
+ {"N25Q32", 0x20ba16, 0x0, 256 * 256, 64},
+ {"N25Q32A", 0x20bb16, 0x0, 256 * 256, 64},
+ {"N25Q64", 0x20ba17, 0x0, 256 * 256, 128},
+ {"N25Q64A", 0x20bb17, 0x0, 256 * 256, 128},
+ {"N25Q128", 0x20ba18, 0x0, 256 * 256, 256},
+ {"N25Q128A", 0x20bb18, 0x0, 256 * 256, 256},
+ {"N25Q256", 0x20ba19, 0x0, 256 * 256, 512},
+ {"N25Q256A", 0x20bb19, 0x0, 256 * 256, 512},
+ {"N25Q512", 0x20ba20, 0x0, 256 * 256, 1024},
+ {"N25Q512A", 0x20bb20, 0x0, 256 * 256, 1024},
+ {"N25Q1024", 0x20ba21, 0x0, 256 * 256, 2048},
+ {"N25Q1024A", 0x20bb21, 0x0, 256 * 256, 2048},
+ /*
+ * TODO:
+ * ATMEL
+ * EON
+ * GIGADEVICE
+ * MACRONIX
+ * RAMTRON
+ * SPANSION
+ * SST
+ * STMICRO (M25*)
+ * WINBOND
+ * non-JEDEC ID's
+ */
+};
+
+struct spi_flash *spi_flash_validate_ids(struct spi_slave *spi, u8 *idcode)
+{
+ struct spi_flash *flash;
+ int i;
+ u16 jedec = idcode[1] << 8 | idcode[2];
+
+ /* Get the flash id (jedec = manuf_id + dev_id) */
+ for (i = 0; i < ARRAY_SIZE(spi_flash_ids); i++) {
+ if ((spi_flash_ids[i].jedec >> 16) == idcode[0]) {
+ if (((spi_flash_ids[i].jedec << 16) >> 16) == jedec)
+ break;
+ }
+ }
+
+ if (i == ARRAY_SIZE(spi_flash_ids)) {
+ printf("SF: Unsupported flash ID: manuf %02x, jedec %04x\n",
+ idcode[0], jedec);
+ return NULL;
+ }
+
+ flash = malloc(sizeof(*flash));
+ if (!flash) {
+ debug("SF: Failed to allocate spi_flash\n");
+ return NULL;
+ }
+ memset(flash, '\0', sizeof(*flash));
+
+ flash->spi = spi;
+ flash->name = spi_flash_ids[i].name;
+ flash->poll_cmd = CMD_READ_STATUS;
+
+ /* Assign spi_flash ops */
+ flash->write = spi_flash_cmd_write_multi;
+ flash->erase = spi_flash_cmd_erase;
+ flash->read = spi_flash_cmd_read_fast;
+
+ /* Compute the flash size */
+ flash->page_size = 256;
+ flash->sector_size = spi_flash_ids[i].sector_size;
+ flash->size = flash->sector_size * spi_flash_ids[i].nr_sectors;
+
+ return flash;
+}
+
#ifdef CONFIG_SPI_FLASH_BAR
int spi_flash_bank_config(struct spi_flash *flash, u8 idcode0)
{
@@ -84,89 +172,22 @@ int spi_flash_decode_fdt(const void *blob, struct spi_flash *flash)
}
#endif /* CONFIG_OF_CONTROL */
-/*
- * The following table holds all device probe functions
- *
- * shift: number of continuation bytes before the ID
- * idcode: the expected IDCODE or 0xff for non JEDEC devices
- * probe: the function to call
- *
- * Non JEDEC devices should be ordered in the table such that
- * the probe functions with best detection algorithms come first.
- *
- * Several matching entries are permitted, they will be tried
- * in sequence until a probe function returns non NULL.
- *
- * IDCODE_CONT_LEN may be redefined if a device needs to declare a
- * larger "shift" value. IDCODE_PART_LEN generally shouldn't be
- * changed. This is the max number of bytes probe functions may
- * examine when looking up part-specific identification info.
- *
- * Probe functions will be given the idcode buffer starting at their
- * manu id byte (the "idcode" in the table below). In other words,
- * all of the continuation bytes will be skipped (the "shift" below).
- */
-#define IDCODE_CONT_LEN 0
-#define IDCODE_PART_LEN 5
-static const struct {
- const u8 shift;
- const u8 idcode;
- struct spi_flash *(*probe) (struct spi_slave *spi, u8 *idcode);
-} flashes[] = {
- /* Keep it sorted by define name */
-#ifdef CONFIG_SPI_FLASH_ATMEL
- { 0, 0x1f, spi_flash_probe_atmel, },
-#endif
-#ifdef CONFIG_SPI_FLASH_EON
- { 0, 0x1c, spi_flash_probe_eon, },
-#endif
-#ifdef CONFIG_SPI_FLASH_GIGADEVICE
- { 0, 0xc8, spi_flash_probe_gigadevice, },
-#endif
-#ifdef CONFIG_SPI_FLASH_MACRONIX
- { 0, 0xc2, spi_flash_probe_macronix, },
-#endif
-#ifdef CONFIG_SPI_FLASH_SPANSION
- { 0, 0x01, spi_flash_probe_spansion, },
-#endif
-#ifdef CONFIG_SPI_FLASH_SST
- { 0, 0xbf, spi_flash_probe_sst, },
-#endif
-#ifdef CONFIG_SPI_FLASH_STMICRO
- { 0, 0x20, spi_flash_probe_stmicro, },
-#endif
-#ifdef CONFIG_SPI_FLASH_WINBOND
- { 0, 0xef, spi_flash_probe_winbond, },
-#endif
-#ifdef CONFIG_SPI_FRAM_RAMTRON
- { 6, 0xc2, spi_fram_probe_ramtron, },
-# undef IDCODE_CONT_LEN
-# define IDCODE_CONT_LEN 6
-#endif
- /* Keep it sorted by best detection */
-#ifdef CONFIG_SPI_FLASH_STMICRO
- { 0, 0xff, spi_flash_probe_stmicro, },
-#endif
-#ifdef CONFIG_SPI_FRAM_RAMTRON_NON_JEDEC
- { 0, 0xff, spi_fram_probe_ramtron, },
-#endif
-};
-#define IDCODE_LEN (IDCODE_CONT_LEN + IDCODE_PART_LEN)
-
struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs,
unsigned int max_hz, unsigned int spi_mode)
{
struct spi_slave *spi;
struct spi_flash *flash = NULL;
- int ret, i, shift;
- u8 idcode[IDCODE_LEN], *idp;
+ u8 idcode[5], *idp;
+ int ret;
+ /* Setup spi_slave */
spi = spi_setup_slave(bus, cs, max_hz, spi_mode);
if (!spi) {
printf("SF: Failed to set up slave\n");
return NULL;
}
+ /* Claim spi bus */
ret = spi_claim_bus(spi);
if (ret) {
debug("SF: Failed to claim SPI bus: %d\n", ret);
@@ -175,47 +196,36 @@ struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs,
/* Read the ID codes */
ret = spi_flash_cmd(spi, CMD_READ_ID, idcode, sizeof(idcode));
- if (ret)
+ if (ret) {
+ printf("SF: Failed to get idcodes\n");
goto err_read_id;
+ }
#ifdef DEBUG
printf("SF: Got idcodes\n");
print_buffer(0, idcode, 1, sizeof(idcode), 0);
#endif
- /* count the number of continuation bytes */
- for (shift = 0, idp = idcode;
- shift < IDCODE_CONT_LEN && *idp == 0x7f;
- ++shift, ++idp)
- continue;
-
- /* search the table for matches in shift and id */
- for (i = 0; i < ARRAY_SIZE(flashes); ++i)
- if (flashes[i].shift == shift && flashes[i].idcode == *idp) {
- /* we have a match, call probe */
- flash = flashes[i].probe(spi, idp);
- if (flash)
- break;
- }
-
- if (!flash) {
- printf("SF: Unsupported manufacturer %02x\n", *idp);
- goto err_manufacturer_probe;
- }
+ /* Validate ID's from flash dev table */
+ idp = idcode;
+ flash = spi_flash_validate_ids(spi, idp);
+ if (!flash)
+ goto err_read_id;
#ifdef CONFIG_SPI_FLASH_BAR
- /* Configure the BAR - disover bank cmds and read current bank */
+ /* Configure the BAR - discover bank cmds and read current bank */
ret = spi_flash_bank_config(flash, *idp);
if (ret < 0)
- goto err_manufacturer_probe;
+ goto err_read_id;
#endif
#ifdef CONFIG_OF_CONTROL
if (spi_flash_decode_fdt(gd->fdt_blob, flash)) {
debug("SF: FDT decode error\n");
- goto err_manufacturer_probe;
+ goto err_read_id;
}
#endif
+
printf("SF: Detected %s with page size ", flash->name);
print_size(flash->sector_size, ", total ");
print_size(flash->size, "");
@@ -229,11 +239,11 @@ struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs,
}
#endif
+ /* Release spi bus */
spi_release_bus(spi);
return flash;
-err_manufacturer_probe:
err_read_id:
spi_release_bus(spi);
err_claim_bus:
@@ -241,32 +251,6 @@ err_claim_bus:
return NULL;
}
-void *spi_flash_do_alloc(int offset, int size, struct spi_slave *spi,
- const char *name)
-{
- struct spi_flash *flash;
- void *ptr;
-
- ptr = malloc(size);
- if (!ptr) {
- debug("SF: Failed to allocate memory\n");
- return NULL;
- }
- memset(ptr, '\0', size);
- flash = (struct spi_flash *)(ptr + offset);
-
- /* Set up some basic fields - caller will sort out sizes */
- flash->spi = spi;
- flash->name = name;
- flash->poll_cmd = CMD_READ_STATUS;
-
- flash->read = spi_flash_cmd_read_fast;
- flash->write = spi_flash_cmd_write_multi;
- flash->erase = spi_flash_cmd_erase;
-
- return flash;
-}
-
void spi_flash_free(struct spi_flash *flash)
{
spi_free_slave(flash->spi);
diff --git a/drivers/mtd/spi/spi_flash_probe_legacy.c b/drivers/mtd/spi/spi_flash_probe_legacy.c
new file mode 100644
index 0000000..fedc81e
--- /dev/null
+++ b/drivers/mtd/spi/spi_flash_probe_legacy.c
@@ -0,0 +1,274 @@
+/*
+ * SPI flash probing
+ *
+ * Copyright (C) 2008 Atmel Corporation
+ * Copyright (C) 2010 Reinhard Meyer, EMK Elektronik
+ * Copyright (C) 2013 Jagannadha Sutradharudu Teki, Xilinx Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <common.h>
+#include <fdtdec.h>
+#include <malloc.h>
+#include <spi.h>
+#include <spi_flash.h>
+
+#include "spi_flash_internal.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifdef CONFIG_SPI_FLASH_BAR
+int spi_flash_bank_config(struct spi_flash *flash, u8 idcode0)
+{
+ u8 cmd;
+ u8 curr_bank = 0;
+
+ /* discover bank cmds */
+ switch (idcode0) {
+ case SPI_FLASH_SPANSION_IDCODE0:
+ flash->bank_read_cmd = CMD_BANKADDR_BRRD;
+ flash->bank_write_cmd = CMD_BANKADDR_BRWR;
+ break;
+ case SPI_FLASH_STMICRO_IDCODE0:
+ case SPI_FLASH_WINBOND_IDCODE0:
+ flash->bank_read_cmd = CMD_EXTNADDR_RDEAR;
+ flash->bank_write_cmd = CMD_EXTNADDR_WREAR;
+ break;
+ default:
+ printf("SF: Unsupported bank commands %02x\n", idcode0);
+ return -1;
+ }
+
+ /* read the bank reg - on which bank the flash is in currently */
+ cmd = flash->bank_read_cmd;
+ if (flash->size > SPI_FLASH_16MB_BOUN) {
+ if (spi_flash_read_common(flash, &cmd, 1, &curr_bank, 1)) {
+ debug("SF: fail to read bank addr register\n");
+ return -1;
+ }
+ flash->bank_curr = curr_bank;
+ } else {
+ flash->bank_curr = curr_bank;
+ }
+
+ return 0;
+}
+#endif
+
+#ifdef CONFIG_OF_CONTROL
+int spi_flash_decode_fdt(const void *blob, struct spi_flash *flash)
+{
+ fdt_addr_t addr;
+ fdt_size_t size;
+ int node;
+
+ /* If there is no node, do nothing */
+ node = fdtdec_next_compatible(blob, 0, COMPAT_GENERIC_SPI_FLASH);
+ if (node < 0)
+ return 0;
+
+ addr = fdtdec_get_addr_size(blob, node, "memory-map", &size);
+ if (addr == FDT_ADDR_T_NONE) {
+ debug("%s: Cannot decode address\n", __func__);
+ return 0;
+ }
+
+ if (flash->size != size) {
+ debug("%s: Memory map must cover entire device\n", __func__);
+ return -1;
+ }
+ flash->memory_map = (void *)addr;
+
+ return 0;
+}
+#endif /* CONFIG_OF_CONTROL */
+
+/*
+ * The following table holds all device probe functions
+ *
+ * shift: number of continuation bytes before the ID
+ * idcode: the expected IDCODE or 0xff for non JEDEC devices
+ * probe: the function to call
+ *
+ * Non JEDEC devices should be ordered in the table such that
+ * the probe functions with best detection algorithms come first.
+ *
+ * Several matching entries are permitted, they will be tried
+ * in sequence until a probe function returns non NULL.
+ *
+ * IDCODE_CONT_LEN may be redefined if a device needs to declare a
+ * larger "shift" value. IDCODE_PART_LEN generally shouldn't be
+ * changed. This is the max number of bytes probe functions may
+ * examine when looking up part-specific identification info.
+ *
+ * Probe functions will be given the idcode buffer starting at their
+ * manu id byte (the "idcode" in the table below). In other words,
+ * all of the continuation bytes will be skipped (the "shift" below).
+ */
+#define IDCODE_CONT_LEN 0
+#define IDCODE_PART_LEN 5
+static const struct {
+ const u8 shift;
+ const u8 idcode;
+ struct spi_flash *(*probe) (struct spi_slave *spi, u8 *idcode);
+} flashes[] = {
+ /* Keep it sorted by define name */
+#ifdef CONFIG_SPI_FLASH_ATMEL
+ { 0, 0x1f, spi_flash_probe_atmel, },
+#endif
+#ifdef CONFIG_SPI_FLASH_EON
+ { 0, 0x1c, spi_flash_probe_eon, },
+#endif
+#ifdef CONFIG_SPI_FLASH_GIGADEVICE
+ { 0, 0xc8, spi_flash_probe_gigadevice, },
+#endif
+#ifdef CONFIG_SPI_FLASH_MACRONIX
+ { 0, 0xc2, spi_flash_probe_macronix, },
+#endif
+#ifdef CONFIG_SPI_FLASH_SPANSION
+ { 0, 0x01, spi_flash_probe_spansion, },
+#endif
+#ifdef CONFIG_SPI_FLASH_SST
+ { 0, 0xbf, spi_flash_probe_sst, },
+#endif
+#ifdef CONFIG_SPI_FLASH_STMICRO
+ { 0, 0x20, spi_flash_probe_stmicro, },
+#endif
+#ifdef CONFIG_SPI_FLASH_WINBOND
+ { 0, 0xef, spi_flash_probe_winbond, },
+#endif
+#ifdef CONFIG_SPI_FRAM_RAMTRON
+ { 6, 0xc2, spi_fram_probe_ramtron, },
+# undef IDCODE_CONT_LEN
+# define IDCODE_CONT_LEN 6
+#endif
+ /* Keep it sorted by best detection */
+#ifdef CONFIG_SPI_FLASH_STMICRO
+ { 0, 0xff, spi_flash_probe_stmicro, },
+#endif
+#ifdef CONFIG_SPI_FRAM_RAMTRON_NON_JEDEC
+ { 0, 0xff, spi_fram_probe_ramtron, },
+#endif
+};
+#define IDCODE_LEN (IDCODE_CONT_LEN + IDCODE_PART_LEN)
+
+struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs,
+ unsigned int max_hz, unsigned int spi_mode)
+{
+ struct spi_slave *spi;
+ struct spi_flash *flash = NULL;
+ int ret, i, shift;
+ u8 idcode[IDCODE_LEN], *idp;
+
+ spi = spi_setup_slave(bus, cs, max_hz, spi_mode);
+ if (!spi) {
+ printf("SF: Failed to set up slave\n");
+ return NULL;
+ }
+
+ ret = spi_claim_bus(spi);
+ if (ret) {
+ debug("SF: Failed to claim SPI bus: %d\n", ret);
+ goto err_claim_bus;
+ }
+
+ /* Read the ID codes */
+ ret = spi_flash_cmd(spi, CMD_READ_ID, idcode, sizeof(idcode));
+ if (ret)
+ goto err_read_id;
+
+#ifdef DEBUG
+ printf("SF: Got idcodes\n");
+ print_buffer(0, idcode, 1, sizeof(idcode), 0);
+#endif
+
+ /* count the number of continuation bytes */
+ for (shift = 0, idp = idcode;
+ shift < IDCODE_CONT_LEN && *idp == 0x7f;
+ ++shift, ++idp)
+ continue;
+
+ /* search the table for matches in shift and id */
+ for (i = 0; i < ARRAY_SIZE(flashes); ++i)
+ if (flashes[i].shift == shift && flashes[i].idcode == *idp) {
+ /* we have a match, call probe */
+ flash = flashes[i].probe(spi, idp);
+ if (flash)
+ break;
+ }
+
+ if (!flash) {
+ printf("SF: Unsupported manufacturer %02x\n", *idp);
+ goto err_manufacturer_probe;
+ }
+
+#ifdef CONFIG_SPI_FLASH_BAR
+ /* Configure the BAR - disover bank cmds and read current bank */
+ ret = spi_flash_bank_config(flash, *idp);
+ if (ret < 0)
+ goto err_manufacturer_probe;
+#endif
+
+#ifdef CONFIG_OF_CONTROL
+ if (spi_flash_decode_fdt(gd->fdt_blob, flash)) {
+ debug("SF: FDT decode error\n");
+ goto err_manufacturer_probe;
+ }
+#endif
+ printf("SF: Detected %s with page size ", flash->name);
+ print_size(flash->sector_size, ", total ");
+ print_size(flash->size, "");
+ if (flash->memory_map)
+ printf(", mapped at %p", flash->memory_map);
+ puts("\n");
+#ifndef CONFIG_SPI_FLASH_BAR
+ if (flash->size > SPI_FLASH_16MB_BOUN) {
+ puts("SF: Warning - Only lower 16MiB accessible,");
+ puts(" Full access #define CONFIG_SPI_FLASH_BAR\n");
+ }
+#endif
+
+ spi_release_bus(spi);
+
+ return flash;
+
+err_manufacturer_probe:
+err_read_id:
+ spi_release_bus(spi);
+err_claim_bus:
+ spi_free_slave(spi);
+ return NULL;
+}
+
+void *spi_flash_do_alloc(int offset, int size, struct spi_slave *spi,
+ const char *name)
+{
+ struct spi_flash *flash;
+ void *ptr;
+
+ ptr = malloc(size);
+ if (!ptr) {
+ debug("SF: Failed to allocate memory\n");
+ return NULL;
+ }
+ memset(ptr, '\0', size);
+ flash = (struct spi_flash *)(ptr + offset);
+
+ /* Set up some basic fields - caller will sort out sizes */
+ flash->spi = spi;
+ flash->name = name;
+ flash->poll_cmd = CMD_READ_STATUS;
+
+ flash->read = spi_flash_cmd_read_fast;
+ flash->write = spi_flash_cmd_write_multi;
+ flash->erase = spi_flash_cmd_erase;
+
+ return flash;
+}
+
+void spi_flash_free(struct spi_flash *flash)
+{
+ spi_free_slave(flash->spi);
+ free(flash);
+}
--
1.8.3
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