diff options
| -rw-r--r-- | README | 20 | ||||
| -rw-r--r-- | common/cmd_sf.c | 37 | ||||
| -rw-r--r-- | drivers/mtd/spi/eeprom_m95xxx.c | 28 |
3 files changed, 57 insertions, 28 deletions
@@ -815,6 +815,7 @@ The following options need to be configured: (requires CONFIG_CMD_I2C) CONFIG_CMD_SETGETDCR Support for DCR Register access (4xx only) + CONFIG_CMD_SF * Read/write/erase SPI NOR flash CONFIG_CMD_SHA1SUM print sha1 memory digest (requires CONFIG_CMD_MEMORY) CONFIG_CMD_SOURCE "source" command Support @@ -2197,6 +2198,25 @@ The following options need to be configured: allows to read/write in Dataflash via the standard commands cp, md... +- Serial Flash support + CONFIG_CMD_SF + + Defining this option enables SPI flash commands + 'sf probe/read/write/erase/update'. + + Usage requires an initial 'probe' to define the serial + flash parameters, followed by read/write/erase/update + commands. + + The following defaults may be provided by the platform + to handle the common case when only a single serial + flash is present on the system. + + CONFIG_SF_DEFAULT_BUS Bus identifier + CONFIG_SF_DEFAULT_CS Chip-select + CONFIG_SF_DEFAULT_MODE (see include/spi.h) + CONFIG_SF_DEFAULT_SPEED in Hz + - SystemACE Support: CONFIG_SYSTEMACE diff --git a/common/cmd_sf.c b/common/cmd_sf.c index 612fd18..98e4162 100644 --- a/common/cmd_sf.c +++ b/common/cmd_sf.c @@ -17,6 +17,12 @@ #ifndef CONFIG_SF_DEFAULT_MODE # define CONFIG_SF_DEFAULT_MODE SPI_MODE_3 #endif +#ifndef CONFIG_SF_DEFAULT_CS +# define CONFIG_SF_DEFAULT_CS 0 +#endif +#ifndef CONFIG_SF_DEFAULT_BUS +# define CONFIG_SF_DEFAULT_BUS 0 +#endif static struct spi_flash *flash; @@ -63,27 +69,26 @@ static int sf_parse_len_arg(char *arg, ulong *len) static int do_spi_flash_probe(int argc, char * const argv[]) { - unsigned int bus = 0; - unsigned int cs; + unsigned int bus = CONFIG_SF_DEFAULT_BUS; + unsigned int cs = CONFIG_SF_DEFAULT_CS; unsigned int speed = CONFIG_SF_DEFAULT_SPEED; unsigned int mode = CONFIG_SF_DEFAULT_MODE; char *endp; struct spi_flash *new; - if (argc < 2) - return -1; - - cs = simple_strtoul(argv[1], &endp, 0); - if (*argv[1] == 0 || (*endp != 0 && *endp != ':')) - return -1; - if (*endp == ':') { - if (endp[1] == 0) - return -1; - - bus = cs; - cs = simple_strtoul(endp + 1, &endp, 0); - if (*endp != 0) + if (argc >= 2) { + cs = simple_strtoul(argv[1], &endp, 0); + if (*argv[1] == 0 || (*endp != 0 && *endp != ':')) return -1; + if (*endp == ':') { + if (endp[1] == 0) + return -1; + + bus = cs; + cs = simple_strtoul(endp + 1, &endp, 0); + if (*endp != 0) + return -1; + } } if (argc >= 3) { @@ -299,7 +304,7 @@ usage: U_BOOT_CMD( sf, 5, 1, do_spi_flash, "SPI flash sub-system", - "probe [bus:]cs [hz] [mode] - init flash device on given SPI bus\n" + "probe [[bus:]cs] [hz] [mode] - init flash device on given SPI bus\n" " and chip select\n" "sf read addr offset len - read `len' bytes starting at\n" " `offset' to memory at `addr'\n" diff --git a/drivers/mtd/spi/eeprom_m95xxx.c b/drivers/mtd/spi/eeprom_m95xxx.c index ef8ed6f..88b6c34 100644 --- a/drivers/mtd/spi/eeprom_m95xxx.c +++ b/drivers/mtd/spi/eeprom_m95xxx.c @@ -37,33 +37,37 @@ #define CONFIG_DEFAULT_SPI_MODE SPI_MODE_0 #endif -ssize_t spi_read (uchar *addr, int alen, uchar *buffer, int len) +#ifndef CONFIG_SYS_SPI_WRITE_TOUT +#define CONFIG_SYS_SPI_WRITE_TOUT (5 * CONFIG_SYS_HZ) +#endif + +ssize_t spi_read(uchar *addr, int alen, uchar *buffer, int len) { struct spi_slave *slave; u8 cmd = SPI_EEPROM_READ; slave = spi_setup_slave(CONFIG_DEFAULT_SPI_BUS, 1, 1000000, CONFIG_DEFAULT_SPI_MODE); - if(!slave) + if (!slave) return 0; spi_claim_bus(slave); /* command */ - if(spi_xfer(slave, 8, &cmd, NULL, SPI_XFER_BEGIN)) + if (spi_xfer(slave, 8, &cmd, NULL, SPI_XFER_BEGIN)) return -1; /* - * if alen == 3, addr[0] is the block number, we never use it here. All we - * need are the lower 16 bits + * if alen == 3, addr[0] is the block number, we never use it here. + * All we need are the lower 16 bits. */ if (alen == 3) addr++; /* address, and data */ - if(spi_xfer(slave, 16, addr, NULL, 0)) + if (spi_xfer(slave, 16, addr, NULL, 0)) return -1; - if(spi_xfer(slave, 8 * len, NULL, buffer, SPI_XFER_END)) + if (spi_xfer(slave, 8 * len, NULL, buffer, SPI_XFER_END)) return -1; spi_release_bus(slave); @@ -71,7 +75,7 @@ ssize_t spi_read (uchar *addr, int alen, uchar *buffer, int len) return len; } -ssize_t spi_write (uchar *addr, int alen, uchar *buffer, int len) +ssize_t spi_write(uchar *addr, int alen, uchar *buffer, int len) { struct spi_slave *slave; char buf[3]; @@ -85,7 +89,7 @@ ssize_t spi_write (uchar *addr, int alen, uchar *buffer, int len) spi_claim_bus(slave); buf[0] = SPI_EEPROM_WREN; - if(spi_xfer(slave, 8, buf, NULL, SPI_XFER_BEGIN | SPI_XFER_END)) + if (spi_xfer(slave, 8, buf, NULL, SPI_XFER_BEGIN | SPI_XFER_END)) return -1; buf[0] = SPI_EEPROM_WRITE; @@ -98,9 +102,9 @@ ssize_t spi_write (uchar *addr, int alen, uchar *buffer, int len) memcpy(buf + 1, addr, alen); /* command + addr, then data */ - if(spi_xfer(slave, 24, buf, NULL, SPI_XFER_BEGIN)) + if (spi_xfer(slave, 24, buf, NULL, SPI_XFER_BEGIN)) return -1; - if(spi_xfer(slave, len * 8, buffer, NULL, SPI_XFER_END)) + if (spi_xfer(slave, len * 8, buffer, NULL, SPI_XFER_END)) return -1; start = get_timer(0); @@ -115,7 +119,7 @@ ssize_t spi_write (uchar *addr, int alen, uchar *buffer, int len) } while (get_timer(start) < CONFIG_SYS_SPI_WRITE_TOUT); if (buf[1] & 1) - printf ("*** spi_write: Time out while writing!\n"); + printf("*** spi_write: Timeout while writing!\n"); spi_release_bus(slave); spi_free_slave(slave); |