Padavan/padavan-4.4
1
0
Fork 0
Code Pull Requests Projects Releases Wiki Activity

kernel: mtd: add support for spi-nor 4B opcode

Browse Source
This commit is contained in:
hanwckf
2022-01-28 20:20:31 +08:00
parent 0ec48929c7
commit e21c9835ca
4 changed files with 106 additions and 46 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
trunk/linux-4.4.x/drivers/mtd/devices/serial_flash_cmds.h
View File

@ -18,19 +18,12 @@
#define SPINOR_OP_RDVCR 0x85
/* JEDEC Standard - Serial Flash Discoverable Parmeters (SFDP) Commands */
#define SPINOR_OP_READ_1_2_2 0xbb /* DUAL I/O READ */
#define SPINOR_OP_READ_1_4_4 0xeb /* QUAD I/O READ */
#define SPINOR_OP_WRITE 0x02 /* PAGE PROGRAM */
#define SPINOR_OP_WRITE_1_1_2 0xa2 /* DUAL INPUT PROGRAM */
#define SPINOR_OP_WRITE_1_2_2 0xd2 /* DUAL INPUT EXT PROGRAM */
#define SPINOR_OP_WRITE_1_1_4 0x32 /* QUAD INPUT PROGRAM */
#define SPINOR_OP_WRITE_1_4_4 0x12 /* QUAD INPUT EXT PROGRAM */
/* READ commands with 32-bit addressing */
#define SPINOR_OP_READ4_1_2_2 0xbc
#define SPINOR_OP_READ4_1_4_4 0xec
/* Configuration flags */
#define FLASH_FLAG_SINGLE 0x000000ff
#define FLASH_FLAG_READ_WRITE 0x00000001

24
trunk/linux-4.4.x/drivers/mtd/devices/st_spi_fsm.c
View File

@ -507,12 +507,12 @@ static struct seq_rw_config n25q_read3_configs[] = {
* - 'FAST' variants configured for 8 dummy cycles (see note above.)
*/
static struct seq_rw_config n25q_read4_configs[] = {
{FLASH_FLAG_READ_1_4_4, SPINOR_OP_READ4_1_4_4, 0, 4, 4, 0x00, 0, 8},
{FLASH_FLAG_READ_1_1_4, SPINOR_OP_READ4_1_1_4, 0, 1, 4, 0x00, 0, 8},
{FLASH_FLAG_READ_1_2_2, SPINOR_OP_READ4_1_2_2, 0, 2, 2, 0x00, 0, 8},
{FLASH_FLAG_READ_1_1_2, SPINOR_OP_READ4_1_1_2, 0, 1, 2, 0x00, 0, 8},
{FLASH_FLAG_READ_FAST, SPINOR_OP_READ4_FAST, 0, 1, 1, 0x00, 0, 8},
{FLASH_FLAG_READ_WRITE, SPINOR_OP_READ4, 0, 1, 1, 0x00, 0, 0},
{FLASH_FLAG_READ_1_4_4, SPINOR_OP_READ_1_4_4_4B, 0, 4, 4, 0x00, 0, 8},
{FLASH_FLAG_READ_1_1_4, SPINOR_OP_READ_1_1_4_4B, 0, 1, 4, 0x00, 0, 8},
{FLASH_FLAG_READ_1_2_2, SPINOR_OP_READ_1_2_2_4B, 0, 2, 2, 0x00, 0, 8},
{FLASH_FLAG_READ_1_1_2, SPINOR_OP_READ_1_1_2_4B, 0, 1, 2, 0x00, 0, 8},
{FLASH_FLAG_READ_FAST, SPINOR_OP_READ_FAST_4B, 0, 1, 1, 0x00, 0, 8},
{FLASH_FLAG_READ_WRITE, SPINOR_OP_READ_4B, 0, 1, 1, 0x00, 0, 0},
{0x00, 0, 0, 0, 0, 0x00, 0, 0},
};
@ -553,12 +553,12 @@ static int stfsm_mx25_en_32bit_addr_seq(struct stfsm_seq *seq)
* entering a state that is incompatible with the SPIBoot Controller.
*/
static struct seq_rw_config stfsm_s25fl_read4_configs[] = {
{FLASH_FLAG_READ_1_4_4, SPINOR_OP_READ4_1_4_4, 0, 4, 4, 0x00, 2, 4},
{FLASH_FLAG_READ_1_1_4, SPINOR_OP_READ4_1_1_4, 0, 1, 4, 0x00, 0, 8},
{FLASH_FLAG_READ_1_2_2, SPINOR_OP_READ4_1_2_2, 0, 2, 2, 0x00, 4, 0},
{FLASH_FLAG_READ_1_1_2, SPINOR_OP_READ4_1_1_2, 0, 1, 2, 0x00, 0, 8},
{FLASH_FLAG_READ_FAST, SPINOR_OP_READ4_FAST, 0, 1, 1, 0x00, 0, 8},
{FLASH_FLAG_READ_WRITE, SPINOR_OP_READ4, 0, 1, 1, 0x00, 0, 0},
{FLASH_FLAG_READ_1_4_4, SPINOR_OP_READ_1_4_4_4B, 0, 4, 4, 0x00, 2, 4},
{FLASH_FLAG_READ_1_1_4, SPINOR_OP_READ_1_1_4_4B, 0, 1, 4, 0x00, 0, 8},
{FLASH_FLAG_READ_1_2_2, SPINOR_OP_READ_1_2_2_4B, 0, 2, 2, 0x00, 4, 0},
{FLASH_FLAG_READ_1_1_2, SPINOR_OP_READ_1_1_2_4B, 0, 1, 2, 0x00, 0, 8},
{FLASH_FLAG_READ_FAST, SPINOR_OP_READ_FAST_4B, 0, 1, 1, 0x00, 0, 8},
{FLASH_FLAG_READ_WRITE, SPINOR_OP_READ_4B, 0, 1, 1, 0x00, 0, 0},
{0x00, 0, 0, 0, 0, 0x00, 0, 0},
};

97
trunk/linux-4.4.x/drivers/mtd/spi-nor/spi-nor.c
View File

@ -69,6 +69,7 @@ struct flash_info {
#define SPI_NOR_DUAL_READ 0x20 /* Flash supports Dual Read */
#define SPI_NOR_QUAD_READ 0x40 /* Flash supports Quad Read */
#define USE_FSR 0x80 /* use flag status register */
#define SPI_NOR_4B_OPCODES 0x200
};
#define JEDEC_MFR(info) ((info)->id[0])
@ -182,6 +183,77 @@ 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 inline u8 spi_nor_convert_3to4_program(u8 opcode)
{
static const u8 spi_nor_3to4_program[][2] = {
{ SPINOR_OP_PP, SPINOR_OP_PP_4B },
{ SPINOR_OP_PP_1_1_4, SPINOR_OP_PP_1_1_4_4B },
{ SPINOR_OP_PP_1_4_4, SPINOR_OP_PP_1_4_4_4B },
};
return spi_nor_convert_opcode(opcode, spi_nor_3to4_program,
ARRAY_SIZE(spi_nor_3to4_program));
}
static inline u8 spi_nor_convert_3to4_erase(u8 opcode)
{
static const u8 spi_nor_3to4_erase[][2] = {
{ SPINOR_OP_BE_4K, SPINOR_OP_BE_4K_4B },
{ SPINOR_OP_BE_32K, SPINOR_OP_BE_32K_4B },
{ SPINOR_OP_SE, SPINOR_OP_SE_4B },
};
return spi_nor_convert_opcode(opcode, spi_nor_3to4_erase,
ARRAY_SIZE(spi_nor_3to4_erase));
}
static void spi_nor_set_4byte_opcodes(struct spi_nor *nor,
const struct flash_info *info)
{
/* Do some manufacturer fixups first */
switch (JEDEC_MFR(info)) {
case SNOR_MFR_SPANSION:
/* No small sector erase for 4-byte command set */
nor->erase_opcode = SPINOR_OP_SE;
nor->mtd.erasesize = info->sector_size;
break;
default:
break;
}
nor->read_opcode = spi_nor_convert_3to4_read(nor->read_opcode);
nor->program_opcode = spi_nor_convert_3to4_program(nor->program_opcode);
nor->erase_opcode = spi_nor_convert_3to4_erase(nor->erase_opcode);
}
/* Enable/disable 4-byte addressing mode. */
static inline int set_4byte(struct spi_nor *nor, const struct flash_info *info,
int enable)
@ -1312,27 +1384,10 @@ int spi_nor_scan(struct spi_nor *nor, const char *name, enum read_mode mode)
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) {
/* Dedicated 4-byte command set */
switch (nor->flash_read) {
case SPI_NOR_QUAD:
nor->read_opcode = SPINOR_OP_READ4_1_1_4;
break;
case SPI_NOR_DUAL:
nor->read_opcode = SPINOR_OP_READ4_1_1_2;
break;
case SPI_NOR_FAST:
nor->read_opcode = SPINOR_OP_READ4_FAST;
break;
case SPI_NOR_NORMAL:
nor->read_opcode = SPINOR_OP_READ4;
break;
}
nor->program_opcode = SPINOR_OP_PP_4B;
/* No small sector erase for 4-byte command set */
nor->erase_opcode = SPINOR_OP_SE_4B;
mtd->erasesize = info->sector_size;
} else
if (JEDEC_MFR(info) == SNOR_MFR_SPANSION ||
info->flags & SPI_NOR_4B_OPCODES)
spi_nor_set_4byte_opcodes(nor, info);
else
set_4byte(nor, info, 1);
} else {
nor->addr_width = 3;

24
trunk/linux-4.4.x/include/linux/mtd/spi-nor.h
View File

@ -42,9 +42,13 @@
#define SPINOR_OP_WRSR 0x01 /* Write status register 1 byte */
#define SPINOR_OP_READ 0x03 /* Read data bytes (low frequency) */
#define SPINOR_OP_READ_FAST 0x0b /* Read data bytes (high frequency) */
#define SPINOR_OP_READ_1_1_2 0x3b /* Read data bytes (Dual SPI) */
#define SPINOR_OP_READ_1_1_4 0x6b /* Read data bytes (Quad SPI) */
#define SPINOR_OP_READ_1_1_2 0x3b /* Read data bytes (Dual Output SPI) */
#define SPINOR_OP_READ_1_2_2 0xbb /* Read data bytes (Dual I/O SPI) */
#define SPINOR_OP_READ_1_1_4 0x6b /* Read data bytes (Quad Output SPI) */
#define SPINOR_OP_READ_1_4_4 0xeb /* Read data bytes (Quad I/O SPI) */
#define SPINOR_OP_PP 0x02 /* Page program (up to 256 bytes) */
#define SPINOR_OP_PP_1_1_4 0x32 /* Quad page program */
#define SPINOR_OP_PP_1_4_4 0x38 /* Quad page program */
#define SPINOR_OP_BE_4K 0x20 /* Erase 4KiB block */
#define SPINOR_OP_BE_4K_PMC 0xd7 /* Erase 4KiB block on PMC chips */
#define SPINOR_OP_BE_32K 0x52 /* Erase 32KiB block */
@ -53,13 +57,21 @@
#define SPINOR_OP_RDID 0x9f /* Read JEDEC ID */
#define SPINOR_OP_RDCR 0x35 /* Read configuration register */
#define SPINOR_OP_RDFSR 0x70 /* Read flag status register */
#define SPINOR_OP_RDEAR 0xc8 /* Read Extended Address Register */
#define SPINOR_OP_WREAR 0xc5 /* Write Extended Address Register */
/* 4-byte address opcodes - used on Spansion and some Macronix flashes. */
#define SPINOR_OP_READ4 0x13 /* Read data bytes (low frequency) */
#define SPINOR_OP_READ4_FAST 0x0c /* Read data bytes (high frequency) */
#define SPINOR_OP_READ4_1_1_2 0x3c /* Read data bytes (Dual SPI) */
#define SPINOR_OP_READ4_1_1_4 0x6c /* Read data bytes (Quad SPI) */
#define SPINOR_OP_READ_4B 0x13 /* Read data bytes (low frequency) */
#define SPINOR_OP_READ_FAST_4B 0x0c /* Read data bytes (high frequency) */
#define SPINOR_OP_READ_1_1_2_4B 0x3c /* Read data bytes (Dual Output SPI) */
#define SPINOR_OP_READ_1_2_2_4B 0xbc /* Read data bytes (Dual I/O SPI) */
#define SPINOR_OP_READ_1_1_4_4B 0x6c /* Read data bytes (Quad Output SPI) */
#define SPINOR_OP_READ_1_4_4_4B 0xec /* Read data bytes (Quad I/O SPI) */
#define SPINOR_OP_PP_4B 0x12 /* Page program (up to 256 bytes) */
#define SPINOR_OP_PP_1_1_4_4B 0x34 /* Quad page program */
#define SPINOR_OP_PP_1_4_4_4B 0x3e /* Quad page program */
#define SPINOR_OP_BE_4K_4B 0x21 /* Erase 4KiB block */
#define SPINOR_OP_BE_32K_4B 0x5c /* Erase 32KiB block */
#define SPINOR_OP_SE_4B 0xdc /* Sector erase (usually 64KiB) */
/* Used for SST flashes only. */