[U-Boot] [PATCH v3 16/20] mtd: spi: Add lightweight SPI flash stack for SPL
Vignesh R
vigneshr at ti.com
Tue Jan 29 05:50:03 UTC 2019
Add a tiny SPI flash stack that just supports reading data/images from
SPI flash. This is useful for boards that have SPL size constraints and
would need to use SPI flash framework just to read images/data from
flash. There is approximately 1.5 to 2KB savings with this.
Based on prior work of reducing spi flash id table by
Simon Goldschmidt <simon.k.r.goldschmidt at gmail.com>
Signed-off-by: Vignesh R <vigneshr at ti.com>
Tested-by: Simon Goldschmidt <simon.k.r.goldschmidt at gmail.com>
Tested-by: Stefan Roese <sr at denx.de>
Tested-by: Horatiu Vultur <horatiu.vultur at microchip.com>
---
common/spl/Kconfig | 11 +-
drivers/mtd/spi/Makefile | 10 +-
drivers/mtd/spi/sf_internal.h | 2 +
drivers/mtd/spi/spi-nor-core.c | 266 +----------
drivers/mtd/spi/spi-nor-ids.c | 297 ++++++++++++
drivers/mtd/spi/spi-nor-tiny.c | 810 +++++++++++++++++++++++++++++++++
6 files changed, 1132 insertions(+), 264 deletions(-)
create mode 100644 drivers/mtd/spi/spi-nor-ids.c
create mode 100644 drivers/mtd/spi/spi-nor-tiny.c
diff --git a/common/spl/Kconfig b/common/spl/Kconfig
index 2e1dd2705a62..416f5933b0d9 100644
--- a/common/spl/Kconfig
+++ b/common/spl/Kconfig
@@ -732,9 +732,18 @@ config SPL_SPI_FLASH_SUPPORT
if SPL_SPI_FLASH_SUPPORT
+config SPL_SPI_FLASH_TINY
+ bool "Enable low footprint SPL SPI Flash support"
+ depends on !SPI_FLASH_BAR
+ help
+ Enable lightweight SPL SPI Flash support that supports just reading
+ data/images from flash. No support to write/erase flash. Enable
+ this if you have SPL size limitations and don't need full
+ fledged SPI flash support.
+
config SPL_SPI_FLASH_SFDP_SUPPORT
bool "SFDP table parsing support for SPI NOR flashes"
- depends on !SPI_FLASH_BAR
+ depends on !SPI_FLASH_BAR && !SPL_SPI_FLASH_TINY
help
Enable support for parsing and auto discovery of parameters for
SPI NOR flashes using Serial Flash Discoverable Parameters (SFDP)
diff --git a/drivers/mtd/spi/Makefile b/drivers/mtd/spi/Makefile
index 70058d3df2b9..f99f6cb16e29 100644
--- a/drivers/mtd/spi/Makefile
+++ b/drivers/mtd/spi/Makefile
@@ -4,12 +4,20 @@
# Wolfgang Denk, DENX Software Engineering, wd at denx.de.
obj-$(CONFIG_DM_SPI_FLASH) += sf-uclass.o
+spi-nor-y := sf_probe.o spi-nor-ids.o
ifdef CONFIG_SPL_BUILD
obj-$(CONFIG_SPL_SPI_BOOT) += fsl_espi_spl.o
+ifeq ($(CONFIG_SPL_SPI_FLASH_TINY),y)
+spi-nor-y += spi-nor-tiny.o
+else
+spi-nor-y += spi-nor-core.o
+endif
+else
+spi-nor-y += spi-nor-core.o
endif
-obj-$(CONFIG_SPI_FLASH) += sf_probe.o spi-nor-core.o
+obj-$(CONFIG_SPI_FLASH) += spi-nor.o
obj-$(CONFIG_SPI_FLASH_DATAFLASH) += sf_dataflash.o sf.o
obj-$(CONFIG_SPI_FLASH_MTD) += sf_mtd.o
obj-$(CONFIG_SPI_FLASH_SANDBOX) += sandbox.o
diff --git a/drivers/mtd/spi/sf_internal.h b/drivers/mtd/spi/sf_internal.h
index fd00e0d1b23b..a6bf734830a7 100644
--- a/drivers/mtd/spi/sf_internal.h
+++ b/drivers/mtd/spi/sf_internal.h
@@ -16,7 +16,9 @@
#define SPI_NOR_MAX_ADDR_WIDTH 4
struct flash_info {
+#if !CONFIG_IS_ENABLED(SPI_FLASH_TINY)
char *name;
+#endif
/*
* This array stores the ID bytes.
diff --git a/drivers/mtd/spi/spi-nor-core.c b/drivers/mtd/spi/spi-nor-core.c
index dbaaf45c7e1e..80633f8fd070 100644
--- a/drivers/mtd/spi/spi-nor-core.c
+++ b/drivers/mtd/spi/spi-nor-core.c
@@ -879,284 +879,26 @@ static int stm_is_locked(struct spi_nor *nor, loff_t ofs, uint64_t len)
}
#endif /* CONFIG_SPI_FLASH_STMICRO */
-/* Used when the "_ext_id" is two bytes at most */
-#define INFO(_jedec_id, _ext_id, _sector_size, _n_sectors, _flags) \
- .id = { \
- ((_jedec_id) >> 16) & 0xff, \
- ((_jedec_id) >> 8) & 0xff, \
- (_jedec_id) & 0xff, \
- ((_ext_id) >> 8) & 0xff, \
- (_ext_id) & 0xff, \
- }, \
- .id_len = (!(_jedec_id) ? 0 : (3 + ((_ext_id) ? 2 : 0))), \
- .sector_size = (_sector_size), \
- .n_sectors = (_n_sectors), \
- .page_size = 256, \
- .flags = (_flags),
-
-#define INFO6(_jedec_id, _ext_id, _sector_size, _n_sectors, _flags) \
- .id = { \
- ((_jedec_id) >> 16) & 0xff, \
- ((_jedec_id) >> 8) & 0xff, \
- (_jedec_id) & 0xff, \
- ((_ext_id) >> 16) & 0xff, \
- ((_ext_id) >> 8) & 0xff, \
- (_ext_id) & 0xff, \
- }, \
- .id_len = 6, \
- .sector_size = (_sector_size), \
- .n_sectors = (_n_sectors), \
- .page_size = 256, \
- .flags = (_flags),
-
-/* NOTE: double check command sets and memory organization when you add
- * more nor chips. This current list focusses on newer chips, which
- * have been converging on command sets which including JEDEC ID.
- *
- * All newly added entries should describe *hardware* and should use SECT_4K
- * (or SECT_4K_PMC) if hardware supports erasing 4 KiB sectors. For usage
- * scenarios excluding small sectors there is config option that can be
- * disabled: CONFIG_MTD_SPI_NOR_USE_4K_SECTORS.
- * For historical (and compatibility) reasons (before we got above config) some
- * old entries may be missing 4K flag.
- */
-const struct flash_info spi_nor_ids[] = {
-#ifdef CONFIG_SPI_FLASH_ATMEL /* ATMEL */
- /* Atmel -- some are (confusingly) marketed as "DataFlash" */
- { "at26df321", INFO(0x1f4700, 0, 64 * 1024, 64, SECT_4K) },
- { "at25df321a", INFO(0x1f4701, 0, 64 * 1024, 64, SECT_4K) },
-
- { "at45db011d", INFO(0x1f2200, 0, 64 * 1024, 4, SECT_4K) },
- { "at45db021d", INFO(0x1f2300, 0, 64 * 1024, 8, SECT_4K) },
- { "at45db041d", INFO(0x1f2400, 0, 64 * 1024, 8, SECT_4K) },
- { "at45db081d", INFO(0x1f2500, 0, 64 * 1024, 16, SECT_4K) },
- { "at45db161d", INFO(0x1f2600, 0, 64 * 1024, 32, SECT_4K) },
- { "at45db321d", INFO(0x1f2700, 0, 64 * 1024, 64, SECT_4K) },
- { "at45db641d", INFO(0x1f2800, 0, 64 * 1024, 128, SECT_4K) },
- { "at26df081a", INFO(0x1f4501, 0, 64 * 1024, 16, SECT_4K) },
-#endif
-#ifdef CONFIG_SPI_FLASH_EON /* EON */
- /* EON -- en25xxx */
- { "en25q32b", INFO(0x1c3016, 0, 64 * 1024, 64, 0) },
- { "en25q64", INFO(0x1c3017, 0, 64 * 1024, 128, SECT_4K) },
- { "en25qh128", INFO(0x1c7018, 0, 64 * 1024, 256, 0) },
- { "en25s64", INFO(0x1c3817, 0, 64 * 1024, 128, SECT_4K) },
-#endif
-#ifdef CONFIG_SPI_FLASH_GIGADEVICE /* GIGADEVICE */
- /* GigaDevice */
- {
- "gd25q16", INFO(0xc84015, 0, 64 * 1024, 32,
- SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
- SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
- },
- {
- "gd25q32", INFO(0xc84016, 0, 64 * 1024, 64,
- SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
- SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
- },
- {
- "gd25lq32", INFO(0xc86016, 0, 64 * 1024, 64,
- SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
- SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
- },
- {
- "gd25q64", INFO(0xc84017, 0, 64 * 1024, 128,
- SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
- SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
- },
-#endif
-#ifdef CONFIG_SPI_FLASH_ISSI /* ISSI */
- /* ISSI */
- { "is25lq040b", INFO(0x9d4013, 0, 64 * 1024, 8,
- SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
- { "is25lp032", INFO(0x9d6016, 0, 64 * 1024, 64, 0) },
- { "is25lp064", INFO(0x9d6017, 0, 64 * 1024, 128, 0) },
- { "is25lp128", INFO(0x9d6018, 0, 64 * 1024, 256,
- SECT_4K | SPI_NOR_DUAL_READ) },
- { "is25lp256", INFO(0x9d6019, 0, 64 * 1024, 512,
- SECT_4K | SPI_NOR_DUAL_READ) },
- { "is25wp032", INFO(0x9d7016, 0, 64 * 1024, 64,
- SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
- { "is25wp064", INFO(0x9d7017, 0, 64 * 1024, 128,
- SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
- { "is25wp128", INFO(0x9d7018, 0, 64 * 1024, 256,
- SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
-#endif
-#ifdef CONFIG_SPI_FLASH_MACRONIX /* MACRONIX */
- /* Macronix */
- { "mx25l2005a", INFO(0xc22012, 0, 64 * 1024, 4, SECT_4K) },
- { "mx25l4005a", INFO(0xc22013, 0, 64 * 1024, 8, SECT_4K) },
- { "mx25l8005", INFO(0xc22014, 0, 64 * 1024, 16, 0) },
- { "mx25l1606e", INFO(0xc22015, 0, 64 * 1024, 32, SECT_4K) },
- { "mx25l3205d", INFO(0xc22016, 0, 64 * 1024, 64, SECT_4K) },
- { "mx25l6405d", INFO(0xc22017, 0, 64 * 1024, 128, SECT_4K) },
- { "mx25u2033e", INFO(0xc22532, 0, 64 * 1024, 4, SECT_4K) },
- { "mx25u1635e", INFO(0xc22535, 0, 64 * 1024, 32, SECT_4K) },
- { "mx25u6435f", INFO(0xc22537, 0, 64 * 1024, 128, SECT_4K) },
- { "mx25l12805d", INFO(0xc22018, 0, 64 * 1024, 256, 0) },
- { "mx25l12855e", INFO(0xc22618, 0, 64 * 1024, 256, 0) },
- { "mx25l25635e", INFO(0xc22019, 0, 64 * 1024, 512, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
- { "mx25u25635f", INFO(0xc22539, 0, 64 * 1024, 512, SECT_4K | SPI_NOR_4B_OPCODES) },
- { "mx25l25655e", INFO(0xc22619, 0, 64 * 1024, 512, 0) },
- { "mx66l51235l", INFO(0xc2201a, 0, 64 * 1024, 1024, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | SPI_NOR_4B_OPCODES) },
- { "mx66u51235f", INFO(0xc2253a, 0, 64 * 1024, 1024, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | SPI_NOR_4B_OPCODES) },
- { "mx66l1g45g", INFO(0xc2201b, 0, 64 * 1024, 2048, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
- { "mx25l1633e", INFO(0xc22415, 0, 64 * 1024, 32, SPI_NOR_QUAD_READ | SPI_NOR_4B_OPCODES | SECT_4K) },
-#endif
-
-#ifdef CONFIG_SPI_FLASH_STMICRO /* STMICRO */
- /* Micron */
- { "n25q016a", INFO(0x20bb15, 0, 64 * 1024, 32, SECT_4K | SPI_NOR_QUAD_READ) },
- { "n25q032", INFO(0x20ba16, 0, 64 * 1024, 64, SPI_NOR_QUAD_READ) },
- { "n25q032a", INFO(0x20bb16, 0, 64 * 1024, 64, SPI_NOR_QUAD_READ) },
- { "n25q064", INFO(0x20ba17, 0, 64 * 1024, 128, SECT_4K | SPI_NOR_QUAD_READ) },
- { "n25q064a", INFO(0x20bb17, 0, 64 * 1024, 128, SECT_4K | SPI_NOR_QUAD_READ) },
- { "n25q128a11", INFO(0x20bb18, 0, 64 * 1024, 256, SECT_4K | SPI_NOR_QUAD_READ) },
- { "n25q128a13", INFO(0x20ba18, 0, 64 * 1024, 256, SECT_4K | SPI_NOR_QUAD_READ) },
- { "n25q256a", INFO(0x20ba19, 0, 64 * 1024, 512, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
- { "n25q256ax1", INFO(0x20bb19, 0, 64 * 1024, 512, SECT_4K | SPI_NOR_QUAD_READ) },
- { "n25q512a", INFO(0x20bb20, 0, 64 * 1024, 1024, SECT_4K | USE_FSR | SPI_NOR_QUAD_READ) },
- { "n25q512ax3", INFO(0x20ba20, 0, 64 * 1024, 1024, SECT_4K | USE_FSR | SPI_NOR_QUAD_READ) },
- { "n25q00", INFO(0x20ba21, 0, 64 * 1024, 2048, SECT_4K | USE_FSR | SPI_NOR_QUAD_READ | NO_CHIP_ERASE) },
- { "n25q00a", INFO(0x20bb21, 0, 64 * 1024, 2048, SECT_4K | USE_FSR | SPI_NOR_QUAD_READ | NO_CHIP_ERASE) },
- { "mt25qu02g", INFO(0x20bb22, 0, 64 * 1024, 4096, SECT_4K | USE_FSR | SPI_NOR_QUAD_READ | NO_CHIP_ERASE) },
-#endif
-#ifdef CONFIG_SPI_FLASH_SPANSION /* SPANSION */
- /* Spansion/Cypress -- single (large) sector size only, at least
- * for the chips listed here (without boot sectors).
- */
- { "s25sl032p", INFO(0x010215, 0x4d00, 64 * 1024, 64, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
- { "s25sl064p", INFO(0x010216, 0x4d00, 64 * 1024, 128, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
- { "s25fl256s0", INFO(0x010219, 0x4d00, 256 * 1024, 128, USE_CLSR) },
- { "s25fl256s1", INFO(0x010219, 0x4d01, 64 * 1024, 512, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | USE_CLSR) },
- { "s25fl512s", INFO6(0x010220, 0x4d0081, 256 * 1024, 256, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | USE_CLSR) },
- { "s25fl512s_256k", INFO(0x010220, 0x4d00, 256 * 1024, 256, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | USE_CLSR) },
- { "s25fl512s_64k", INFO(0x010220, 0x4d01, 64 * 1024, 1024, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | USE_CLSR) },
- { "s25fl512s_512k", INFO(0x010220, 0x4f00, 256 * 1024, 256, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | USE_CLSR) },
- { "s25sl12800", INFO(0x012018, 0x0300, 256 * 1024, 64, 0) },
- { "s25sl12801", INFO(0x012018, 0x0301, 64 * 1024, 256, 0) },
- { "s25fl128s", INFO6(0x012018, 0x4d0180, 64 * 1024, 256, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | USE_CLSR) },
- { "s25fl129p0", INFO(0x012018, 0x4d00, 256 * 1024, 64, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | USE_CLSR) },
- { "s25fl129p1", INFO(0x012018, 0x4d01, 64 * 1024, 256, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | USE_CLSR) },
- { "s25sl008a", INFO(0x010213, 0, 64 * 1024, 16, 0) },
- { "s25sl016a", INFO(0x010214, 0, 64 * 1024, 32, 0) },
- { "s25sl032a", INFO(0x010215, 0, 64 * 1024, 64, 0) },
- { "s25sl064a", INFO(0x010216, 0, 64 * 1024, 128, 0) },
- { "s25fl116k", INFO(0x014015, 0, 64 * 1024, 32, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
- { "s25fl164k", INFO(0x014017, 0, 64 * 1024, 128, SECT_4K) },
- { "s25fl208k", INFO(0x014014, 0, 64 * 1024, 16, SECT_4K | SPI_NOR_DUAL_READ) },
- { "s25fl128l", INFO(0x016018, 0, 64 * 1024, 256, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | SPI_NOR_4B_OPCODES) },
-#endif
-#ifdef CONFIG_SPI_FLASH_SST /* SST */
- /* SST -- large erase sizes are "overlays", "sectors" are 4K */
- { "sst25vf040b", INFO(0xbf258d, 0, 64 * 1024, 8, SECT_4K | SST_WRITE) },
- { "sst25vf080b", INFO(0xbf258e, 0, 64 * 1024, 16, SECT_4K | SST_WRITE) },
- { "sst25vf016b", INFO(0xbf2541, 0, 64 * 1024, 32, SECT_4K | SST_WRITE) },
- { "sst25vf032b", INFO(0xbf254a, 0, 64 * 1024, 64, SECT_4K | SST_WRITE) },
- { "sst25vf064c", INFO(0xbf254b, 0, 64 * 1024, 128, SECT_4K) },
- { "sst25wf512", INFO(0xbf2501, 0, 64 * 1024, 1, SECT_4K | SST_WRITE) },
- { "sst25wf010", INFO(0xbf2502, 0, 64 * 1024, 2, SECT_4K | SST_WRITE) },
- { "sst25wf020", INFO(0xbf2503, 0, 64 * 1024, 4, SECT_4K | SST_WRITE) },
- { "sst25wf020a", INFO(0x621612, 0, 64 * 1024, 4, SECT_4K) },
- { "sst25wf040b", INFO(0x621613, 0, 64 * 1024, 8, SECT_4K) },
- { "sst25wf040", INFO(0xbf2504, 0, 64 * 1024, 8, SECT_4K | SST_WRITE) },
- { "sst25wf080", INFO(0xbf2505, 0, 64 * 1024, 16, SECT_4K | SST_WRITE) },
- { "sst26vf064b", INFO(0xbf2643, 0, 64 * 1024, 128, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
- { "sst26wf016", INFO(0xbf2651, 0, 64 * 1024, 32, SECT_4K) },
- { "sst26wf032", INFO(0xbf2622, 0, 64 * 1024, 64, SECT_4K) },
- { "sst26wf064", INFO(0xbf2643, 0, 64 * 1024, 128, SECT_4K) },
-#endif
-#ifdef CONFIG_SPI_FLASH_STMICRO /* STMICRO */
- /* ST Microelectronics -- newer production may have feature updates */
- { "m25p10", INFO(0x202011, 0, 32 * 1024, 4, 0) },
- { "m25p20", INFO(0x202012, 0, 64 * 1024, 4, 0) },
- { "m25p40", INFO(0x202013, 0, 64 * 1024, 8, 0) },
- { "m25p80", INFO(0x202014, 0, 64 * 1024, 16, 0) },
- { "m25p16", INFO(0x202015, 0, 64 * 1024, 32, 0) },
- { "m25p32", INFO(0x202016, 0, 64 * 1024, 64, 0) },
- { "m25p64", INFO(0x202017, 0, 64 * 1024, 128, 0) },
- { "m25p128", INFO(0x202018, 0, 256 * 1024, 64, 0) },
- { "m25pe16", INFO(0x208015, 0, 64 * 1024, 32, SECT_4K) },
- { "m25px16", INFO(0x207115, 0, 64 * 1024, 32, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
- { "m25px64", INFO(0x207117, 0, 64 * 1024, 128, 0) },
-#endif
-#ifdef CONFIG_SPI_FLASH_WINBOND /* WINBOND */
- /* Winbond -- w25x "blocks" are 64K, "sectors" are 4KiB */
- { "w25x05", INFO(0xef3010, 0, 64 * 1024, 1, SECT_4K) },
- { "w25x10", INFO(0xef3011, 0, 64 * 1024, 2, SECT_4K) },
- { "w25x20", INFO(0xef3012, 0, 64 * 1024, 4, SECT_4K) },
- { "w25x40", INFO(0xef3013, 0, 64 * 1024, 8, SECT_4K) },
- { "w25x80", INFO(0xef3014, 0, 64 * 1024, 16, SECT_4K) },
- { "w25x16", INFO(0xef3015, 0, 64 * 1024, 32, SECT_4K) },
- {
- "w25q16dw", INFO(0xef6015, 0, 64 * 1024, 32,
- SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
- SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
- },
- { "w25x32", INFO(0xef3016, 0, 64 * 1024, 64, SECT_4K) },
- { "w25q20cl", INFO(0xef4012, 0, 64 * 1024, 4, SECT_4K) },
- { "w25q20bw", INFO(0xef5012, 0, 64 * 1024, 4, SECT_4K) },
- { "w25q20ew", INFO(0xef6012, 0, 64 * 1024, 4, SECT_4K) },
- { "w25q32", INFO(0xef4016, 0, 64 * 1024, 64, SECT_4K) },
- {
- "w25q32dw", INFO(0xef6016, 0, 64 * 1024, 64,
- SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
- SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
- },
- {
- "w25q32jv", INFO(0xef7016, 0, 64 * 1024, 64,
- SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
- SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
- },
- { "w25x64", INFO(0xef3017, 0, 64 * 1024, 128, SECT_4K) },
- { "w25q64", INFO(0xef4017, 0, 64 * 1024, 128, SECT_4K) },
- {
- "w25q64dw", INFO(0xef6017, 0, 64 * 1024, 128,
- SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
- SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
- },
- {
- "w25q128fw", INFO(0xef6018, 0, 64 * 1024, 256,
- SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
- SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
- },
- { "w25q80", INFO(0xef5014, 0, 64 * 1024, 16, SECT_4K) },
- { "w25q80bl", INFO(0xef4014, 0, 64 * 1024, 16, SECT_4K) },
- { "w25q128", INFO(0xef4018, 0, 64 * 1024, 256, SECT_4K) },
- { "w25q256", INFO(0xef4019, 0, 64 * 1024, 512, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
- { "w25m512jv", INFO(0xef7119, 0, 64 * 1024, 1024,
- SECT_4K | SPI_NOR_QUAD_READ | SPI_NOR_DUAL_READ) },
-#endif
-#ifdef CONFIG_SPI_FLASH_XMC
- /* XMC (Wuhan Xinxin Semiconductor Manufacturing Corp.) */
- { "XM25QH64A", INFO(0x207017, 0, 64 * 1024, 128, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
- { "XM25QH128A", INFO(0x207018, 0, 64 * 1024, 256, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
-#endif
- { },
-};
-
static const struct flash_info *spi_nor_read_id(struct spi_nor *nor)
{
int tmp;
u8 id[SPI_NOR_MAX_ID_LEN];
const struct flash_info *info;
- if (!ARRAY_SIZE(spi_nor_ids))
- return ERR_PTR(-ENODEV);
-
tmp = nor->read_reg(nor, SPINOR_OP_RDID, id, SPI_NOR_MAX_ID_LEN);
if (tmp < 0) {
dev_dbg(nor->dev, "error %d reading JEDEC ID\n", tmp);
return ERR_PTR(tmp);
}
- for (tmp = 0; tmp < ARRAY_SIZE(spi_nor_ids) - 1; tmp++) {
- info = &spi_nor_ids[tmp];
+ info = spi_nor_ids;
+ for (; info->name; info++) {
if (info->id_len) {
if (!memcmp(info->id, id, info->id_len))
- return &spi_nor_ids[tmp];
+ return info;
}
}
+
dev_err(nor->dev, "unrecognized JEDEC id bytes: %02x, %02x, %02x\n",
id[0], id[1], id[2]);
return ERR_PTR(-ENODEV);
diff --git a/drivers/mtd/spi/spi-nor-ids.c b/drivers/mtd/spi/spi-nor-ids.c
new file mode 100644
index 000000000000..3215e2431dc0
--- /dev/null
+++ b/drivers/mtd/spi/spi-nor-ids.c
@@ -0,0 +1,297 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ *
+ * Copyright (C) 2013 Jagannadha Sutradharudu Teki, Xilinx Inc.
+ * Copyright (C) 2016 Jagan Teki <jagan at openedev.com>
+ * Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/
+ */
+
+#include <common.h>
+#include <spi.h>
+#include <spi_flash.h>
+
+#include "sf_internal.h"
+
+/* Exclude chip names for SPL to save space */
+#if !CONFIG_IS_ENABLED(SPI_FLASH_TINY)
+#define INFO_NAME(_name) .name = _name,
+#else
+#define INFO_NAME(_name)
+#endif
+
+/* Used when the "_ext_id" is two bytes at most */
+#define INFO(_name, _jedec_id, _ext_id, _sector_size, _n_sectors, _flags) \
+ INFO_NAME(_name) \
+ .id = { \
+ ((_jedec_id) >> 16) & 0xff, \
+ ((_jedec_id) >> 8) & 0xff, \
+ (_jedec_id) & 0xff, \
+ ((_ext_id) >> 8) & 0xff, \
+ (_ext_id) & 0xff, \
+ }, \
+ .id_len = (!(_jedec_id) ? 0 : (3 + ((_ext_id) ? 2 : 0))), \
+ .sector_size = (_sector_size), \
+ .n_sectors = (_n_sectors), \
+ .page_size = 256, \
+ .flags = (_flags),
+
+#define INFO6(_name, _jedec_id, _ext_id, _sector_size, _n_sectors, _flags) \
+ INFO_NAME(_name) \
+ .id = { \
+ ((_jedec_id) >> 16) & 0xff, \
+ ((_jedec_id) >> 8) & 0xff, \
+ (_jedec_id) & 0xff, \
+ ((_ext_id) >> 16) & 0xff, \
+ ((_ext_id) >> 8) & 0xff, \
+ (_ext_id) & 0xff, \
+ }, \
+ .id_len = 6, \
+ .sector_size = (_sector_size), \
+ .n_sectors = (_n_sectors), \
+ .page_size = 256, \
+ .flags = (_flags),
+
+/* NOTE: double check command sets and memory organization when you add
+ * more nor chips. This current list focusses on newer chips, which
+ * have been converging on command sets which including JEDEC ID.
+ *
+ * All newly added entries should describe *hardware* and should use SECT_4K
+ * (or SECT_4K_PMC) if hardware supports erasing 4 KiB sectors. For usage
+ * scenarios excluding small sectors there is config option that can be
+ * disabled: CONFIG_MTD_SPI_NOR_USE_4K_SECTORS.
+ * For historical (and compatibility) reasons (before we got above config) some
+ * old entries may be missing 4K flag.
+ */
+const struct flash_info spi_nor_ids[] = {
+#ifdef CONFIG_SPI_FLASH_ATMEL /* ATMEL */
+ /* Atmel -- some are (confusingly) marketed as "DataFlash" */
+ { INFO("at26df321", 0x1f4700, 0, 64 * 1024, 64, SECT_4K) },
+ { INFO("at25df321a", 0x1f4701, 0, 64 * 1024, 64, SECT_4K) },
+
+ { INFO("at45db011d", 0x1f2200, 0, 64 * 1024, 4, SECT_4K) },
+ { INFO("at45db021d", 0x1f2300, 0, 64 * 1024, 8, SECT_4K) },
+ { INFO("at45db041d", 0x1f2400, 0, 64 * 1024, 8, SECT_4K) },
+ { INFO("at45db081d", 0x1f2500, 0, 64 * 1024, 16, SECT_4K) },
+ { INFO("at45db161d", 0x1f2600, 0, 64 * 1024, 32, SECT_4K) },
+ { INFO("at45db321d", 0x1f2700, 0, 64 * 1024, 64, SECT_4K) },
+ { INFO("at45db641d", 0x1f2800, 0, 64 * 1024, 128, SECT_4K) },
+ { INFO("at26df081a", 0x1f4501, 0, 64 * 1024, 16, SECT_4K) },
+#endif
+#ifdef CONFIG_SPI_FLASH_EON /* EON */
+ /* EON -- en25xxx */
+ { INFO("en25q32b", 0x1c3016, 0, 64 * 1024, 64, 0) },
+ { INFO("en25q64", 0x1c3017, 0, 64 * 1024, 128, SECT_4K) },
+ { INFO("en25qh128", 0x1c7018, 0, 64 * 1024, 256, 0) },
+ { INFO("en25s64", 0x1c3817, 0, 64 * 1024, 128, SECT_4K) },
+#endif
+#ifdef CONFIG_SPI_FLASH_GIGADEVICE /* GIGADEVICE */
+ /* GigaDevice */
+ {
+ INFO("gd25q16", 0xc84015, 0, 64 * 1024, 32,
+ SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
+ SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
+ },
+ {
+ INFO("gd25q32", 0xc84016, 0, 64 * 1024, 64,
+ SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
+ SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
+ },
+ {
+ INFO("gd25lq32", 0xc86016, 0, 64 * 1024, 64,
+ SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
+ SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
+ },
+ {
+ INFO("gd25q64", 0xc84017, 0, 64 * 1024, 128,
+ SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
+ SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
+ },
+#endif
+#ifdef CONFIG_SPI_FLASH_ISSI /* ISSI */
+ /* ISSI */
+ { INFO("is25lq040b", 0x9d4013, 0, 64 * 1024, 8,
+ SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
+ { INFO("is25lp032", 0x9d6016, 0, 64 * 1024, 64, 0) },
+ { INFO("is25lp064", 0x9d6017, 0, 64 * 1024, 128, 0) },
+ { INFO("is25lp128", 0x9d6018, 0, 64 * 1024, 256,
+ SECT_4K | SPI_NOR_DUAL_READ) },
+ { INFO("is25lp256", 0x9d6019, 0, 64 * 1024, 512,
+ SECT_4K | SPI_NOR_DUAL_READ) },
+ { INFO("is25wp032", 0x9d7016, 0, 64 * 1024, 64,
+ SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
+ { INFO("is25wp064", 0x9d7017, 0, 64 * 1024, 128,
+ SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
+ { INFO("is25wp128", 0x9d7018, 0, 64 * 1024, 256,
+ SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
+#endif
+#ifdef CONFIG_SPI_FLASH_MACRONIX /* MACRONIX */
+ /* Macronix */
+ { INFO("mx25l2005a", 0xc22012, 0, 64 * 1024, 4, SECT_4K) },
+ { INFO("mx25l4005a", 0xc22013, 0, 64 * 1024, 8, SECT_4K) },
+ { INFO("mx25l8005", 0xc22014, 0, 64 * 1024, 16, 0) },
+ { INFO("mx25l1606e", 0xc22015, 0, 64 * 1024, 32, SECT_4K) },
+ { INFO("mx25l3205d", 0xc22016, 0, 64 * 1024, 64, SECT_4K) },
+ { INFO("mx25l6405d", 0xc22017, 0, 64 * 1024, 128, SECT_4K) },
+ { INFO("mx25u2033e", 0xc22532, 0, 64 * 1024, 4, SECT_4K) },
+ { INFO("mx25u1635e", 0xc22535, 0, 64 * 1024, 32, SECT_4K) },
+ { INFO("mx25u6435f", 0xc22537, 0, 64 * 1024, 128, SECT_4K) },
+ { INFO("mx25l12805d", 0xc22018, 0, 64 * 1024, 256, 0) },
+ { INFO("mx25l12855e", 0xc22618, 0, 64 * 1024, 256, 0) },
+ { INFO("mx25l25635e", 0xc22019, 0, 64 * 1024, 512, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
+ { INFO("mx25u25635f", 0xc22539, 0, 64 * 1024, 512, SECT_4K | SPI_NOR_4B_OPCODES) },
+ { INFO("mx25l25655e", 0xc22619, 0, 64 * 1024, 512, 0) },
+ { INFO("mx66l51235l", 0xc2201a, 0, 64 * 1024, 1024, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | SPI_NOR_4B_OPCODES) },
+ { INFO("mx66u51235f", 0xc2253a, 0, 64 * 1024, 1024, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | SPI_NOR_4B_OPCODES) },
+ { INFO("mx66l1g45g", 0xc2201b, 0, 64 * 1024, 2048, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
+ { INFO("mx25l1633e", 0xc22415, 0, 64 * 1024, 32, SPI_NOR_QUAD_READ | SPI_NOR_4B_OPCODES | SECT_4K) },
+#endif
+
+#ifdef CONFIG_SPI_FLASH_STMICRO /* STMICRO */
+ /* Micron */
+ { INFO("n25q016a", 0x20bb15, 0, 64 * 1024, 32, SECT_4K | SPI_NOR_QUAD_READ) },
+ { INFO("n25q032", 0x20ba16, 0, 64 * 1024, 64, SPI_NOR_QUAD_READ) },
+ { INFO("n25q032a", 0x20bb16, 0, 64 * 1024, 64, SPI_NOR_QUAD_READ) },
+ { INFO("n25q064", 0x20ba17, 0, 64 * 1024, 128, SECT_4K | SPI_NOR_QUAD_READ) },
+ { INFO("n25q064a", 0x20bb17, 0, 64 * 1024, 128, SECT_4K | SPI_NOR_QUAD_READ) },
+ { INFO("n25q128a11", 0x20bb18, 0, 64 * 1024, 256, SECT_4K | SPI_NOR_QUAD_READ) },
+ { INFO("n25q128a13", 0x20ba18, 0, 64 * 1024, 256, SECT_4K | SPI_NOR_QUAD_READ) },
+ { INFO("n25q256a", 0x20ba19, 0, 64 * 1024, 512, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | SPI_NOR_4B_OPCODES) },
+ { INFO("n25q256ax1", 0x20bb19, 0, 64 * 1024, 512, SECT_4K | SPI_NOR_QUAD_READ | SPI_NOR_4B_OPCODES) },
+ { INFO("n25q512a", 0x20bb20, 0, 64 * 1024, 1024, SECT_4K | USE_FSR | SPI_NOR_QUAD_READ | SPI_NOR_4B_OPCODES) },
+ { INFO("n25q512ax3", 0x20ba20, 0, 64 * 1024, 1024, SECT_4K | USE_FSR | SPI_NOR_QUAD_READ | SPI_NOR_4B_OPCODES) },
+ { INFO("n25q00", 0x20ba21, 0, 64 * 1024, 2048, SECT_4K | USE_FSR | SPI_NOR_QUAD_READ | NO_CHIP_ERASE) },
+ { INFO("n25q00a", 0x20bb21, 0, 64 * 1024, 2048, SECT_4K | USE_FSR | SPI_NOR_QUAD_READ | NO_CHIP_ERASE) },
+ { INFO("mt25qu02g", 0x20bb22, 0, 64 * 1024, 4096, SECT_4K | USE_FSR | SPI_NOR_QUAD_READ | NO_CHIP_ERASE) },
+#endif
+#ifdef CONFIG_SPI_FLASH_SPANSION /* SPANSION */
+ /* Spansion/Cypress -- single (large) sector size only, at least
+ * for the chips listed here (without boot sectors).
+ */
+ { INFO("s25sl032p", 0x010215, 0x4d00, 64 * 1024, 64, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
+ { INFO("s25sl064p", 0x010216, 0x4d00, 64 * 1024, 128, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
+ { INFO("s25fl256s0", 0x010219, 0x4d00, 256 * 1024, 128, USE_CLSR) },
+ { INFO("s25fl256s1", 0x010219, 0x4d01, 64 * 1024, 512, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | USE_CLSR) },
+ { INFO6("s25fl512s", 0x010220, 0x4d0081, 256 * 1024, 256, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | USE_CLSR) },
+ { INFO("s25fl512s_256k", 0x010220, 0x4d00, 256 * 1024, 256, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | USE_CLSR) },
+ { INFO("s25fl512s_64k", 0x010220, 0x4d01, 64 * 1024, 1024, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | USE_CLSR) },
+ { INFO("s25fl512s_512k", 0x010220, 0x4f00, 256 * 1024, 256, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | USE_CLSR) },
+ { INFO("s25sl12800", 0x012018, 0x0300, 256 * 1024, 64, 0) },
+ { INFO("s25sl12801", 0x012018, 0x0301, 64 * 1024, 256, 0) },
+ { INFO6("s25fl128s", 0x012018, 0x4d0180, 64 * 1024, 256, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | USE_CLSR) },
+ { INFO("s25fl129p0", 0x012018, 0x4d00, 256 * 1024, 64, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | USE_CLSR) },
+ { INFO("s25fl129p1", 0x012018, 0x4d01, 64 * 1024, 256, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | USE_CLSR) },
+ { INFO("s25sl008a", 0x010213, 0, 64 * 1024, 16, 0) },
+ { INFO("s25sl016a", 0x010214, 0, 64 * 1024, 32, 0) },
+ { INFO("s25sl032a", 0x010215, 0, 64 * 1024, 64, 0) },
+ { INFO("s25sl064a", 0x010216, 0, 64 * 1024, 128, 0) },
+ { INFO("s25fl116k", 0x014015, 0, 64 * 1024, 32, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
+ { INFO("s25fl164k", 0x014017, 0, 64 * 1024, 128, SECT_4K) },
+ { INFO("s25fl208k", 0x014014, 0, 64 * 1024, 16, SECT_4K | SPI_NOR_DUAL_READ) },
+ { INFO("s25fl128l", 0x016018, 0, 64 * 1024, 256, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ | SPI_NOR_4B_OPCODES) },
+#endif
+#ifdef CONFIG_SPI_FLASH_SST /* SST */
+ /* SST -- large erase sizes are "overlays", "sectors" are 4K */
+ { INFO("sst25vf040b", 0xbf258d, 0, 64 * 1024, 8, SECT_4K | SST_WRITE) },
+ { INFO("sst25vf080b", 0xbf258e, 0, 64 * 1024, 16, SECT_4K | SST_WRITE) },
+ { INFO("sst25vf016b", 0xbf2541, 0, 64 * 1024, 32, SECT_4K | SST_WRITE) },
+ { INFO("sst25vf032b", 0xbf254a, 0, 64 * 1024, 64, SECT_4K | SST_WRITE) },
+ { INFO("sst25vf064c", 0xbf254b, 0, 64 * 1024, 128, SECT_4K) },
+ { INFO("sst25wf512", 0xbf2501, 0, 64 * 1024, 1, SECT_4K | SST_WRITE) },
+ { INFO("sst25wf010", 0xbf2502, 0, 64 * 1024, 2, SECT_4K | SST_WRITE) },
+ { INFO("sst25wf020", 0xbf2503, 0, 64 * 1024, 4, SECT_4K | SST_WRITE) },
+ { INFO("sst25wf020a", 0x621612, 0, 64 * 1024, 4, SECT_4K) },
+ { INFO("sst25wf040b", 0x621613, 0, 64 * 1024, 8, SECT_4K) },
+ { INFO("sst25wf040", 0xbf2504, 0, 64 * 1024, 8, SECT_4K | SST_WRITE) },
+ { INFO("sst25wf080", 0xbf2505, 0, 64 * 1024, 16, SECT_4K | SST_WRITE) },
+ { INFO("sst26vf064b", 0xbf2643, 0, 64 * 1024, 128, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
+ { INFO("sst26wf016", 0xbf2651, 0, 64 * 1024, 32, SECT_4K) },
+ { INFO("sst26wf032", 0xbf2622, 0, 64 * 1024, 64, SECT_4K) },
+ { INFO("sst26wf064", 0xbf2643, 0, 64 * 1024, 128, SECT_4K) },
+#endif
+#ifdef CONFIG_SPI_FLASH_STMICRO /* STMICRO */
+ /* ST Microelectronics -- newer production may have feature updates */
+ { INFO("m25p10", 0x202011, 0, 32 * 1024, 4, 0) },
+ { INFO("m25p20", 0x202012, 0, 64 * 1024, 4, 0) },
+ { INFO("m25p40", 0x202013, 0, 64 * 1024, 8, 0) },
+ { INFO("m25p80", 0x202014, 0, 64 * 1024, 16, 0) },
+ { INFO("m25p16", 0x202015, 0, 64 * 1024, 32, 0) },
+ { INFO("m25p32", 0x202016, 0, 64 * 1024, 64, 0) },
+ { INFO("m25p64", 0x202017, 0, 64 * 1024, 128, 0) },
+ { INFO("m25p128", 0x202018, 0, 256 * 1024, 64, 0) },
+ { INFO("m25pe16", 0x208015, 0, 64 * 1024, 32, SECT_4K) },
+ { INFO("m25px16", 0x207115, 0, 64 * 1024, 32, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
+ { INFO("m25px64", 0x207117, 0, 64 * 1024, 128, 0) },
+#endif
+#ifdef CONFIG_SPI_FLASH_WINBOND /* WINBOND */
+ /* Winbond -- w25x "blocks" are 64K, "sectors" are 4KiB */
+ { INFO("w25p80", 0xef2014, 0x0, 64 * 1024, 16, 0) },
+ { INFO("w25p16", 0xef2015, 0x0, 64 * 1024, 32, 0) },
+ { INFO("w25p32", 0xef2016, 0x0, 64 * 1024, 64, 0) },
+ { INFO("w25x05", 0xef3010, 0, 64 * 1024, 1, SECT_4K) },
+ { INFO("w25x40", 0xef3013, 0, 64 * 1024, 8, SECT_4K) },
+ { INFO("w25x16", 0xef3015, 0, 64 * 1024, 32, SECT_4K) },
+ {
+ INFO("w25q16dw", 0xef6015, 0, 64 * 1024, 32,
+ SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
+ SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
+ },
+ { INFO("w25x32", 0xef3016, 0, 64 * 1024, 64, SECT_4K) },
+ { INFO("w25q20cl", 0xef4012, 0, 64 * 1024, 4, SECT_4K) },
+ { INFO("w25q20bw", 0xef5012, 0, 64 * 1024, 4, SECT_4K) },
+ { INFO("w25q20ew", 0xef6012, 0, 64 * 1024, 4, SECT_4K) },
+ { INFO("w25q32", 0xef4016, 0, 64 * 1024, 64, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
+ {
+ INFO("w25q32dw", 0xef6016, 0, 64 * 1024, 64,
+ SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
+ SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
+ },
+ {
+ INFO("w25q32jv", 0xef7016, 0, 64 * 1024, 64,
+ SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
+ SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
+ },
+ { INFO("w25x64", 0xef3017, 0, 64 * 1024, 128, SECT_4K) },
+ {
+ INFO("w25q64dw", 0xef6017, 0, 64 * 1024, 128,
+ SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
+ SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
+ },
+ {
+ INFO("w25q64jv", 0xef7017, 0, 64 * 1024, 128,
+ SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
+ SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
+ },
+ {
+ INFO("w25q128fw", 0xef6018, 0, 64 * 1024, 256,
+ SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
+ SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
+ },
+ {
+ INFO("w25q128jv", 0xef7018, 0, 64 * 1024, 256,
+ SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
+ SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
+ },
+ {
+ INFO("w25q256fw", 0xef6019, 0, 64 * 1024, 512,
+ SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
+ SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
+ },
+ {
+ INFO("w25q256jw", 0xef7019, 0, 64 * 1024, 512,
+ SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
+ SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
+ },
+ { INFO("w25q80", 0xef5014, 0, 64 * 1024, 16, SECT_4K) },
+ { INFO("w25q80bl", 0xef4014, 0, 64 * 1024, 16, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
+ { INFO("w25q16cl", 0xef4015, 0, 64 * 1024, 32, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
+ { INFO("w25q64cv", 0xef4017, 0, 64 * 1024, 128, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
+ { INFO("w25q128", 0xef4018, 0, 64 * 1024, 256, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
+ { INFO("w25q256", 0xef4019, 0, 64 * 1024, 512, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
+#endif
+#ifdef CONFIG_SPI_FLASH_XMC
+ /* XMC (Wuhan Xinxin Semiconductor Manufacturing Corp.) */
+ { INFO("XM25QH64A", 0x207017, 0, 64 * 1024, 128, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
+ { INFO("XM25QH128A", 0x207018, 0, 64 * 1024, 256, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
+#endif
+ { },
+};
diff --git a/drivers/mtd/spi/spi-nor-tiny.c b/drivers/mtd/spi/spi-nor-tiny.c
new file mode 100644
index 000000000000..c5274ed6b41e
--- /dev/null
+++ b/drivers/mtd/spi/spi-nor-tiny.c
@@ -0,0 +1,810 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Based on m25p80.c, by Mike Lavender (mike at steroidmicros.com), with
+ * influence from lart.c (Abraham Van Der Merwe) and mtd_dataflash.c
+ *
+ * Copyright (C) 2005, Intec Automation Inc.
+ * Copyright (C) 2014, Freescale Semiconductor, Inc.
+ *
+ * Synced from Linux v4.19
+ */
+
+#include <common.h>
+#include <linux/err.h>
+#include <linux/errno.h>
+#include <linux/log2.h>
+#include <linux/math64.h>
+#include <linux/sizes.h>
+
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/spi-nor.h>
+#include <spi-mem.h>
+#include <spi.h>
+
+#include "sf_internal.h"
+
+/* Define max times to check status register before we give up. */
+
+/*
+ * For everything but full-chip erase; probably could be much smaller, but kept
+ * around for safety for now
+ */
+
+#define HZ CONFIG_SYS_HZ
+
+#define DEFAULT_READY_WAIT_JIFFIES (40UL * HZ)
+
+static int spi_nor_read_write_reg(struct spi_nor *nor, struct spi_mem_op
+ *op, void *buf)
+{
+ if (op->data.dir == SPI_MEM_DATA_IN)
+ op->data.buf.in = buf;
+ else
+ op->data.buf.out = buf;
+ return spi_mem_exec_op(nor->spi, op);
+}
+
+static int spi_nor_read_reg(struct spi_nor *nor, u8 code, u8 *val, int len)
+{
+ struct spi_mem_op op = SPI_MEM_OP(SPI_MEM_OP_CMD(code, 1),
+ SPI_MEM_OP_NO_ADDR,
+ SPI_MEM_OP_NO_DUMMY,
+ SPI_MEM_OP_DATA_IN(len, NULL, 1));
+ int ret;
+
+ ret = spi_nor_read_write_reg(nor, &op, val);
+ if (ret < 0)
+ dev_dbg(&flash->spimem->spi->dev, "error %d reading %x\n", ret,
+ code);
+
+ return ret;
+}
+
+static int spi_nor_write_reg(struct spi_nor *nor, u8 opcode, u8 *buf, int len)
+{
+ struct spi_mem_op op = SPI_MEM_OP(SPI_MEM_OP_CMD(opcode, 1),
+ SPI_MEM_OP_NO_ADDR,
+ SPI_MEM_OP_NO_DUMMY,
+ SPI_MEM_OP_DATA_OUT(len, NULL, 1));
+
+ return spi_nor_read_write_reg(nor, &op, buf);
+}
+
+static ssize_t spi_nor_read_data(struct spi_nor *nor, loff_t from, size_t len,
+ u_char *buf)
+{
+ struct spi_mem_op op =
+ SPI_MEM_OP(SPI_MEM_OP_CMD(nor->read_opcode, 1),
+ SPI_MEM_OP_ADDR(nor->addr_width, from, 1),
+ SPI_MEM_OP_DUMMY(nor->read_dummy, 1),
+ SPI_MEM_OP_DATA_IN(len, buf, 1));
+ size_t remaining = len;
+ int ret;
+
+ /* get transfer protocols. */
+ op.cmd.buswidth = spi_nor_get_protocol_inst_nbits(nor->read_proto);
+ op.addr.buswidth = spi_nor_get_protocol_addr_nbits(nor->read_proto);
+ op.dummy.buswidth = op.addr.buswidth;
+ op.data.buswidth = spi_nor_get_protocol_data_nbits(nor->read_proto);
+
+ /* convert the dummy cycles to the number of bytes */
+ op.dummy.nbytes = (nor->read_dummy * op.dummy.buswidth) / 8;
+
+ while (remaining) {
+ op.data.nbytes = remaining < UINT_MAX ? remaining : UINT_MAX;
+ ret = spi_mem_adjust_op_size(nor->spi, &op);
+ if (ret)
+ return ret;
+
+ ret = spi_mem_exec_op(nor->spi, &op);
+ if (ret)
+ return ret;
+
+ op.addr.val += op.data.nbytes;
+ remaining -= op.data.nbytes;
+ op.data.buf.in += op.data.nbytes;
+ }
+
+ return len;
+}
+
+#if defined(CONFIG_SPI_FLASH_SPANSION) || defined(CONFIG_SPI_FLASH_WINBOND)
+/*
+ * Read configuration register, returning its value in the
+ * location. Return the configuration register value.
+ * Returns negative if error occurred.
+ */
+static int read_cr(struct spi_nor *nor)
+{
+ int ret;
+ u8 val;
+
+ ret = spi_nor_read_reg(nor, SPINOR_OP_RDCR, &val, 1);
+ if (ret < 0) {
+ dev_dbg(nor->dev, "error %d reading CR\n", ret);
+ return ret;
+ }
+
+ return val;
+}
+#endif
+
+/*
+ * Write status register 1 byte
+ * Returns negative if error occurred.
+ */
+static inline int write_sr(struct spi_nor *nor, u8 val)
+{
+ nor->cmd_buf[0] = val;
+ return spi_nor_write_reg(nor, SPINOR_OP_WRSR, nor->cmd_buf, 1);
+}
+
+/*
+ * Set write enable latch with Write Enable command.
+ * Returns negative if error occurred.
+ */
+static inline int write_enable(struct spi_nor *nor)
+{
+ return spi_nor_write_reg(nor, SPINOR_OP_WREN, NULL, 0);
+}
+
+/*
+ * Send write disable instruction to the chip.
+ */
+static inline int write_disable(struct spi_nor *nor)
+{
+ return spi_nor_write_reg(nor, SPINOR_OP_WRDI, NULL, 0);
+}
+
+static inline struct spi_nor *mtd_to_spi_nor(struct mtd_info *mtd)
+{
+ return mtd->priv;
+}
+
+static u8 spi_nor_convert_opcode(u8 opcode, const u8 table[][2], size_t size)
+{
+ size_t i;
+
+ for (i = 0; i < size; i++)
+ if (table[i][0] == opcode)
+ return table[i][1];
+
+ /* No conversion found, keep input op code. */
+ return opcode;
+}
+
+static inline u8 spi_nor_convert_3to4_read(u8 opcode)
+{
+ static const u8 spi_nor_3to4_read[][2] = {
+ { SPINOR_OP_READ, SPINOR_OP_READ_4B },
+ { SPINOR_OP_READ_FAST, SPINOR_OP_READ_FAST_4B },
+ { SPINOR_OP_READ_1_1_2, SPINOR_OP_READ_1_1_2_4B },
+ { SPINOR_OP_READ_1_2_2, SPINOR_OP_READ_1_2_2_4B },
+ { SPINOR_OP_READ_1_1_4, SPINOR_OP_READ_1_1_4_4B },
+ { SPINOR_OP_READ_1_4_4, SPINOR_OP_READ_1_4_4_4B },
+ };
+
+ return spi_nor_convert_opcode(opcode, spi_nor_3to4_read,
+ ARRAY_SIZE(spi_nor_3to4_read));
+}
+
+static void spi_nor_set_4byte_opcodes(struct spi_nor *nor,
+ const struct flash_info *info)
+{
+ nor->read_opcode = spi_nor_convert_3to4_read(nor->read_opcode);
+}
+
+/* Enable/disable 4-byte addressing mode. */
+static inline int set_4byte(struct spi_nor *nor, const struct flash_info *info,
+ int enable)
+{
+ int status;
+ bool need_wren = false;
+ u8 cmd;
+
+ switch (JEDEC_MFR(info)) {
+ case SNOR_MFR_ST:
+ case SNOR_MFR_MICRON:
+ /* Some Micron need WREN command; all will accept it */
+ need_wren = true;
+ case SNOR_MFR_MACRONIX:
+ case SNOR_MFR_WINBOND:
+ if (need_wren)
+ write_enable(nor);
+
+ cmd = enable ? SPINOR_OP_EN4B : SPINOR_OP_EX4B;
+ status = spi_nor_write_reg(nor, cmd, NULL, 0);
+ if (need_wren)
+ write_disable(nor);
+
+ if (!status && !enable &&
+ JEDEC_MFR(info) == SNOR_MFR_WINBOND) {
+ /*
+ * On Winbond W25Q256FV, leaving 4byte mode causes
+ * the Extended Address Register to be set to 1, so all
+ * 3-byte-address reads come from the second 16M.
+ * We must clear the register to enable normal behavior.
+ */
+ write_enable(nor);
+ nor->cmd_buf[0] = 0;
+ spi_nor_write_reg(nor, SPINOR_OP_WREAR,
+ nor->cmd_buf, 1);
+ write_disable(nor);
+ }
+
+ return status;
+ default:
+ /* Spansion style */
+ nor->cmd_buf[0] = enable << 7;
+ return spi_nor_write_reg(nor, SPINOR_OP_BRWR, nor->cmd_buf, 1);
+ }
+}
+
+#if defined(CONFIG_SPI_FLASH_SPANSION) || \
+ defined(CONFIG_SPI_FLASH_WINBOND) || \
+ defined(CONFIG_SPI_FLASH_MACRONIX)
+/*
+ * Read the status register, returning its value in the location
+ * Return the status register value.
+ * Returns negative if error occurred.
+ */
+static int read_sr(struct spi_nor *nor)
+{
+ int ret;
+ u8 val;
+
+ ret = spi_nor_read_reg(nor, SPINOR_OP_RDSR, &val, 1);
+ if (ret < 0) {
+ pr_debug("error %d reading SR\n", (int)ret);
+ return ret;
+ }
+
+ return val;
+}
+
+/*
+ * Read the flag status register, returning its value in the location
+ * Return the status register value.
+ * Returns negative if error occurred.
+ */
+static int read_fsr(struct spi_nor *nor)
+{
+ int ret;
+ u8 val;
+
+ ret = spi_nor_read_reg(nor, SPINOR_OP_RDFSR, &val, 1);
+ if (ret < 0) {
+ pr_debug("error %d reading FSR\n", ret);
+ return ret;
+ }
+
+ return val;
+}
+
+static int spi_nor_sr_ready(struct spi_nor *nor)
+{
+ int sr = read_sr(nor);
+
+ if (sr < 0)
+ return sr;
+
+ return !(sr & SR_WIP);
+}
+
+static int spi_nor_fsr_ready(struct spi_nor *nor)
+{
+ int fsr = read_fsr(nor);
+
+ if (fsr < 0)
+ return fsr;
+ return fsr & FSR_READY;
+}
+
+static int spi_nor_ready(struct spi_nor *nor)
+{
+ int sr, fsr;
+
+ sr = spi_nor_sr_ready(nor);
+ if (sr < 0)
+ return sr;
+ fsr = nor->flags & SNOR_F_USE_FSR ? spi_nor_fsr_ready(nor) : 1;
+ if (fsr < 0)
+ return fsr;
+ return sr && fsr;
+}
+
+/*
+ * Service routine to read status register until ready, or timeout occurs.
+ * Returns non-zero if error.
+ */
+static int spi_nor_wait_till_ready_with_timeout(struct spi_nor *nor,
+ unsigned long timeout)
+{
+ unsigned long timebase;
+ int ret;
+
+ timebase = get_timer(0);
+
+ while (get_timer(timebase) < timeout) {
+ ret = spi_nor_ready(nor);
+ if (ret < 0)
+ return ret;
+ if (ret)
+ return 0;
+ }
+
+ dev_err(nor->dev, "flash operation timed out\n");
+
+ return -ETIMEDOUT;
+}
+
+static int spi_nor_wait_till_ready(struct spi_nor *nor)
+{
+ return spi_nor_wait_till_ready_with_timeout(nor,
+ DEFAULT_READY_WAIT_JIFFIES);
+}
+#endif /* CONFIG_SPI_FLASH_SPANSION */
+
+/*
+ * Erase an address range on the nor chip. The address range may extend
+ * one or more erase sectors. Return an error is there is a problem erasing.
+ */
+static int spi_nor_erase(struct mtd_info *mtd, struct erase_info *instr)
+{
+ return -ENOTSUPP;
+}
+
+static const struct flash_info *spi_nor_read_id(struct spi_nor *nor)
+{
+ int tmp;
+ u8 id[SPI_NOR_MAX_ID_LEN];
+ const struct flash_info *info;
+
+ tmp = spi_nor_read_reg(nor, SPINOR_OP_RDID, id, SPI_NOR_MAX_ID_LEN);
+ if (tmp < 0) {
+ dev_dbg(nor->dev, "error %d reading JEDEC ID\n", tmp);
+ return ERR_PTR(tmp);
+ }
+
+ info = spi_nor_ids;
+ for (; info->sector_size != 0; info++) {
+ if (info->id_len) {
+ if (!memcmp(info->id, id, info->id_len))
+ return info;
+ }
+ }
+ dev_dbg(nor->dev, "unrecognized JEDEC id bytes: %02x, %02x, %02x\n",
+ id[0], id[1], id[2]);
+ return ERR_PTR(-ENODEV);
+}
+
+static int spi_nor_read(struct mtd_info *mtd, loff_t from, size_t len,
+ size_t *retlen, u_char *buf)
+{
+ struct spi_nor *nor = mtd_to_spi_nor(mtd);
+ int ret;
+
+ dev_dbg(nor->dev, "from 0x%08x, len %zd\n", (u32)from, len);
+
+ while (len) {
+ loff_t addr = from;
+
+ ret = spi_nor_read_data(nor, addr, len, buf);
+ if (ret == 0) {
+ /* We shouldn't see 0-length reads */
+ ret = -EIO;
+ goto read_err;
+ }
+ if (ret < 0)
+ goto read_err;
+
+ *retlen += ret;
+ buf += ret;
+ from += ret;
+ len -= ret;
+ }
+ ret = 0;
+
+read_err:
+ return ret;
+}
+
+/*
+ * Write an address range to the nor chip. Data must be written in
+ * FLASH_PAGESIZE chunks. The address range may be any size provided
+ * it is within the physical boundaries.
+ */
+static int spi_nor_write(struct mtd_info *mtd, loff_t to, size_t len,
+ size_t *retlen, const u_char *buf)
+{
+ return -ENOTSUPP;
+}
+
+#ifdef CONFIG_SPI_FLASH_MACRONIX
+/**
+ * macronix_quad_enable() - set QE bit in Status Register.
+ * @nor: pointer to a 'struct spi_nor'
+ *
+ * Set the Quad Enable (QE) bit in the Status Register.
+ *
+ * bit 6 of the Status Register is the QE bit for Macronix like QSPI memories.
+ *
+ * Return: 0 on success, -errno otherwise.
+ */
+static int macronix_quad_enable(struct spi_nor *nor)
+{
+ int ret, val;
+
+ val = read_sr(nor);
+ if (val < 0)
+ return val;
+ if (val & SR_QUAD_EN_MX)
+ return 0;
+
+ write_enable(nor);
+
+ write_sr(nor, val | SR_QUAD_EN_MX);
+
+ ret = spi_nor_wait_till_ready(nor);
+ if (ret)
+ return ret;
+
+ ret = read_sr(nor);
+ if (!(ret > 0 && (ret & SR_QUAD_EN_MX))) {
+ dev_err(nor->dev, "Macronix Quad bit not set\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+#endif
+
+#if defined(CONFIG_SPI_FLASH_SPANSION) || defined(CONFIG_SPI_FLASH_WINBOND)
+/*
+ * Write status Register and configuration register with 2 bytes
+ * The first byte will be written to the status register, while the
+ * second byte will be written to the configuration register.
+ * Return negative if error occurred.
+ */
+static int write_sr_cr(struct spi_nor *nor, u8 *sr_cr)
+{
+ int ret;
+
+ write_enable(nor);
+
+ ret = spi_nor_write_reg(nor, SPINOR_OP_WRSR, sr_cr, 2);
+ if (ret < 0) {
+ dev_dbg(nor->dev,
+ "error while writing configuration register\n");
+ return -EINVAL;
+ }
+
+ ret = spi_nor_wait_till_ready(nor);
+ if (ret) {
+ dev_dbg(nor->dev,
+ "timeout while writing configuration register\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+/**
+ * spansion_read_cr_quad_enable() - set QE bit in Configuration Register.
+ * @nor: pointer to a 'struct spi_nor'
+ *
+ * Set the Quad Enable (QE) bit in the Configuration Register.
+ * This function should be used with QSPI memories supporting the Read
+ * Configuration Register (35h) instruction.
+ *
+ * bit 1 of the Configuration Register is the QE bit for Spansion like QSPI
+ * memories.
+ *
+ * Return: 0 on success, -errno otherwise.
+ */
+static int spansion_read_cr_quad_enable(struct spi_nor *nor)
+{
+ u8 sr_cr[2];
+ int ret;
+
+ /* Check current Quad Enable bit value. */
+ ret = read_cr(nor);
+ if (ret < 0) {
+ dev_dbg(dev, "error while reading configuration register\n");
+ return -EINVAL;
+ }
+
+ if (ret & CR_QUAD_EN_SPAN)
+ return 0;
+
+ sr_cr[1] = ret | CR_QUAD_EN_SPAN;
+
+ /* Keep the current value of the Status Register. */
+ ret = read_sr(nor);
+ if (ret < 0) {
+ dev_dbg(dev, "error while reading status register\n");
+ return -EINVAL;
+ }
+ sr_cr[0] = ret;
+
+ ret = write_sr_cr(nor, sr_cr);
+ if (ret)
+ return ret;
+
+ /* Read back and check it. */
+ ret = read_cr(nor);
+ if (!(ret > 0 && (ret & CR_QUAD_EN_SPAN))) {
+ dev_dbg(nor->dev, "Spansion Quad bit not set\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+#endif /* CONFIG_SPI_FLASH_SPANSION */
+
+struct spi_nor_read_command {
+ u8 num_mode_clocks;
+ u8 num_wait_states;
+ u8 opcode;
+ enum spi_nor_protocol proto;
+};
+
+enum spi_nor_read_command_index {
+ SNOR_CMD_READ,
+ SNOR_CMD_READ_FAST,
+
+ /* Quad SPI */
+ SNOR_CMD_READ_1_1_4,
+
+ SNOR_CMD_READ_MAX
+};
+
+struct spi_nor_flash_parameter {
+ struct spi_nor_hwcaps hwcaps;
+ struct spi_nor_read_command reads[SNOR_CMD_READ_MAX];
+};
+
+static void
+spi_nor_set_read_settings(struct spi_nor_read_command *read,
+ u8 num_mode_clocks,
+ u8 num_wait_states,
+ u8 opcode,
+ enum spi_nor_protocol proto)
+{
+ read->num_mode_clocks = num_mode_clocks;
+ read->num_wait_states = num_wait_states;
+ read->opcode = opcode;
+ read->proto = proto;
+}
+
+static int spi_nor_init_params(struct spi_nor *nor,
+ const struct flash_info *info,
+ struct spi_nor_flash_parameter *params)
+{
+ /* (Fast) Read settings. */
+ params->hwcaps.mask = SNOR_HWCAPS_READ;
+ spi_nor_set_read_settings(¶ms->reads[SNOR_CMD_READ],
+ 0, 0, SPINOR_OP_READ,
+ SNOR_PROTO_1_1_1);
+
+ if (!(info->flags & SPI_NOR_NO_FR)) {
+ params->hwcaps.mask |= SNOR_HWCAPS_READ_FAST;
+ spi_nor_set_read_settings(¶ms->reads[SNOR_CMD_READ_FAST],
+ 0, 8, SPINOR_OP_READ_FAST,
+ SNOR_PROTO_1_1_1);
+ }
+
+ if (info->flags & SPI_NOR_QUAD_READ) {
+ params->hwcaps.mask |= SNOR_HWCAPS_READ_1_1_4;
+ spi_nor_set_read_settings(¶ms->reads[SNOR_CMD_READ_1_1_4],
+ 0, 8, SPINOR_OP_READ_1_1_4,
+ SNOR_PROTO_1_1_4);
+ }
+
+ return 0;
+}
+
+static int spi_nor_select_read(struct spi_nor *nor,
+ const struct spi_nor_flash_parameter *params,
+ u32 shared_hwcaps)
+{
+ int best_match = shared_hwcaps & SNOR_HWCAPS_READ_MASK;
+ int cmd;
+ const struct spi_nor_read_command *read;
+
+ if (best_match < 0)
+ return -EINVAL;
+
+ if (best_match & SNOR_HWCAPS_READ_1_1_4)
+ cmd = SNOR_CMD_READ_1_1_4;
+ else if (best_match & SNOR_HWCAPS_READ_FAST)
+ cmd = SNOR_CMD_READ_FAST;
+ else
+ cmd = SNOR_CMD_READ;
+
+ read = ¶ms->reads[cmd];
+ nor->read_opcode = read->opcode;
+ nor->read_proto = read->proto;
+
+ /*
+ * In the spi-nor framework, we don't need to make the difference
+ * between mode clock cycles and wait state clock cycles.
+ * Indeed, the value of the mode clock cycles is used by a QSPI
+ * flash memory to know whether it should enter or leave its 0-4-4
+ * (Continuous Read / XIP) mode.
+ * eXecution In Place is out of the scope of the mtd sub-system.
+ * Hence we choose to merge both mode and wait state clock cycles
+ * into the so called dummy clock cycles.
+ */
+ nor->read_dummy = read->num_mode_clocks + read->num_wait_states;
+ return 0;
+}
+
+static int spi_nor_setup(struct spi_nor *nor, const struct flash_info *info,
+ const struct spi_nor_flash_parameter *params,
+ const struct spi_nor_hwcaps *hwcaps)
+{
+ u32 shared_mask;
+ int err;
+
+ /*
+ * Keep only the hardware capabilities supported by both the SPI
+ * controller and the SPI flash memory.
+ */
+ shared_mask = hwcaps->mask & params->hwcaps.mask;
+
+ /* Select the (Fast) Read command. */
+ err = spi_nor_select_read(nor, params, shared_mask);
+ if (err) {
+ dev_dbg(nor->dev,
+ "can't select read settings supported by both the SPI controller and memory.\n");
+ return err;
+ }
+
+ /* Enable Quad I/O if needed. */
+ if (spi_nor_get_protocol_width(nor->read_proto) == 4) {
+ switch (JEDEC_MFR(info)) {
+#ifdef CONFIG_SPI_FLASH_MACRONIX
+ case SNOR_MFR_MACRONIX:
+ err = macronix_quad_enable(nor);
+ break;
+#endif
+ case SNOR_MFR_ST:
+ case SNOR_MFR_MICRON:
+ break;
+
+ default:
+#if defined(CONFIG_SPI_FLASH_SPANSION) || defined(CONFIG_SPI_FLASH_WINBOND)
+ /* Kept only for backward compatibility purpose. */
+ err = spansion_read_cr_quad_enable(nor);
+#endif
+ break;
+ }
+ }
+ if (err) {
+ dev_dbg(nor->dev, "quad mode not supported\n");
+ return err;
+ }
+
+ return 0;
+}
+
+static int spi_nor_init(struct spi_nor *nor)
+{
+ if (nor->addr_width == 4 &&
+ (JEDEC_MFR(nor->info) != SNOR_MFR_SPANSION) &&
+ !(nor->info->flags & SPI_NOR_4B_OPCODES)) {
+ /*
+ * If the RESET# pin isn't hooked up properly, or the system
+ * otherwise doesn't perform a reset command in the boot
+ * sequence, it's impossible to 100% protect against unexpected
+ * reboots (e.g., crashes). Warn the user (or hopefully, system
+ * designer) that this is bad.
+ */
+ if (nor->flags & SNOR_F_BROKEN_RESET)
+ printf("enabling reset hack; may not recover from unexpected reboots\n");
+ set_4byte(nor, nor->info, 1);
+ }
+
+ return 0;
+}
+
+int spi_nor_scan(struct spi_nor *nor)
+{
+ struct spi_nor_flash_parameter params;
+ const struct flash_info *info = NULL;
+ struct mtd_info *mtd = &nor->mtd;
+ struct spi_nor_hwcaps hwcaps = {
+ .mask = SNOR_HWCAPS_READ |
+ SNOR_HWCAPS_READ_FAST
+ };
+ struct spi_slave *spi = nor->spi;
+ int ret;
+
+ /* Reset SPI protocol for all commands. */
+ nor->reg_proto = SNOR_PROTO_1_1_1;
+ nor->read_proto = SNOR_PROTO_1_1_1;
+ nor->write_proto = SNOR_PROTO_1_1_1;
+
+ if (spi->mode & SPI_RX_QUAD)
+ hwcaps.mask |= SNOR_HWCAPS_READ_1_1_4;
+
+ info = spi_nor_read_id(nor);
+ if (IS_ERR_OR_NULL(info))
+ return -ENOENT;
+ /* Parse the Serial Flash Discoverable Parameters table. */
+ ret = spi_nor_init_params(nor, info, ¶ms);
+ if (ret)
+ return ret;
+
+ mtd->name = "spi-flash";
+ mtd->priv = nor;
+ mtd->type = MTD_NORFLASH;
+ mtd->writesize = 1;
+ mtd->flags = MTD_CAP_NORFLASH;
+ mtd->size = info->sector_size * info->n_sectors;
+ mtd->_erase = spi_nor_erase;
+ mtd->_read = spi_nor_read;
+ mtd->_write = spi_nor_write;
+
+ nor->size = mtd->size;
+
+ if (info->flags & USE_FSR)
+ nor->flags |= SNOR_F_USE_FSR;
+ if (info->flags & USE_CLSR)
+ nor->flags |= SNOR_F_USE_CLSR;
+
+ if (info->flags & SPI_NOR_NO_FR)
+ params.hwcaps.mask &= ~SNOR_HWCAPS_READ_FAST;
+
+ /*
+ * Configure the SPI memory:
+ * - select op codes for (Fast) Read, Page Program and Sector Erase.
+ * - set the number of dummy cycles (mode cycles + wait states).
+ * - set the SPI protocols for register and memory accesses.
+ * - set the Quad Enable bit if needed (required by SPI x-y-4 protos).
+ */
+ ret = spi_nor_setup(nor, info, ¶ms, &hwcaps);
+ if (ret)
+ return ret;
+
+ if (nor->addr_width) {
+ /* already configured from SFDP */
+ } else if (info->addr_width) {
+ nor->addr_width = info->addr_width;
+ } else if (mtd->size > 0x1000000) {
+ /* enable 4-byte addressing if the device exceeds 16MiB */
+ nor->addr_width = 4;
+ if (JEDEC_MFR(info) == SNOR_MFR_SPANSION ||
+ info->flags & SPI_NOR_4B_OPCODES)
+ spi_nor_set_4byte_opcodes(nor, info);
+ } else {
+ nor->addr_width = 3;
+ }
+
+ if (nor->addr_width > SPI_NOR_MAX_ADDR_WIDTH) {
+ dev_dbg(dev, "address width is too large: %u\n",
+ nor->addr_width);
+ return -EINVAL;
+ }
+
+ /* Send all the required SPI flash commands to initialize device */
+ nor->info = info;
+ ret = spi_nor_init(nor);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(spi_nor_scan);
+
+/* U-Boot specific functions, need to extend MTD to support these */
+int spi_flash_cmd_get_sw_write_prot(struct spi_nor *nor)
+{
+ return -ENOTSUPP;
+}
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Huang Shijie <shijie8 at gmail.com>");
+MODULE_AUTHOR("Mike Lavender");
+MODULE_DESCRIPTION("framework for SPI NOR");
--
2.20.1
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