mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-05 02:51:00 +00:00
2fb2604d5c
Remove command name from all command "usage" fields and update common/command.c to display "name - usage" instead of just "usage". Also remove newlines from command usage fields. Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
191 lines
3.9 KiB
C
191 lines
3.9 KiB
C
/*
|
|
* Command for accessing SPI flash.
|
|
*
|
|
* Copyright (C) 2008 Atmel Corporation
|
|
*/
|
|
#include <common.h>
|
|
#include <spi_flash.h>
|
|
|
|
#include <asm/io.h>
|
|
|
|
#ifndef CONFIG_SF_DEFAULT_SPEED
|
|
# define CONFIG_SF_DEFAULT_SPEED 1000000
|
|
#endif
|
|
#ifndef CONFIG_SF_DEFAULT_MODE
|
|
# define CONFIG_SF_DEFAULT_MODE SPI_MODE_3
|
|
#endif
|
|
|
|
static struct spi_flash *flash;
|
|
|
|
static int do_spi_flash_probe(int argc, char *argv[])
|
|
{
|
|
unsigned int bus = 0;
|
|
unsigned int cs;
|
|
unsigned int speed = CONFIG_SF_DEFAULT_SPEED;
|
|
unsigned int mode = CONFIG_SF_DEFAULT_MODE;
|
|
char *endp;
|
|
struct spi_flash *new;
|
|
|
|
if (argc < 2)
|
|
goto usage;
|
|
|
|
cs = simple_strtoul(argv[1], &endp, 0);
|
|
if (*argv[1] == 0 || (*endp != 0 && *endp != ':'))
|
|
goto usage;
|
|
if (*endp == ':') {
|
|
if (endp[1] == 0)
|
|
goto usage;
|
|
|
|
bus = cs;
|
|
cs = simple_strtoul(endp + 1, &endp, 0);
|
|
if (*endp != 0)
|
|
goto usage;
|
|
}
|
|
|
|
if (argc >= 3) {
|
|
speed = simple_strtoul(argv[2], &endp, 0);
|
|
if (*argv[2] == 0 || *endp != 0)
|
|
goto usage;
|
|
}
|
|
if (argc >= 4) {
|
|
mode = simple_strtoul(argv[3], &endp, 0);
|
|
if (*argv[3] == 0 || *endp != 0)
|
|
goto usage;
|
|
}
|
|
|
|
new = spi_flash_probe(bus, cs, speed, mode);
|
|
if (!new) {
|
|
printf("Failed to initialize SPI flash at %u:%u\n", bus, cs);
|
|
return 1;
|
|
}
|
|
|
|
if (flash)
|
|
spi_flash_free(flash);
|
|
flash = new;
|
|
|
|
printf("%u KiB %s at %u:%u is now current device\n",
|
|
flash->size >> 10, flash->name, bus, cs);
|
|
|
|
return 0;
|
|
|
|
usage:
|
|
puts("Usage: sf probe [bus:]cs [hz] [mode]\n");
|
|
return 1;
|
|
}
|
|
|
|
static int do_spi_flash_read_write(int argc, char *argv[])
|
|
{
|
|
unsigned long addr;
|
|
unsigned long offset;
|
|
unsigned long len;
|
|
void *buf;
|
|
char *endp;
|
|
int ret;
|
|
|
|
if (argc < 4)
|
|
goto usage;
|
|
|
|
addr = simple_strtoul(argv[1], &endp, 16);
|
|
if (*argv[1] == 0 || *endp != 0)
|
|
goto usage;
|
|
offset = simple_strtoul(argv[2], &endp, 16);
|
|
if (*argv[2] == 0 || *endp != 0)
|
|
goto usage;
|
|
len = simple_strtoul(argv[3], &endp, 16);
|
|
if (*argv[3] == 0 || *endp != 0)
|
|
goto usage;
|
|
|
|
buf = map_physmem(addr, len, MAP_WRBACK);
|
|
if (!buf) {
|
|
puts("Failed to map physical memory\n");
|
|
return 1;
|
|
}
|
|
|
|
if (strcmp(argv[0], "read") == 0)
|
|
ret = spi_flash_read(flash, offset, len, buf);
|
|
else
|
|
ret = spi_flash_write(flash, offset, len, buf);
|
|
|
|
unmap_physmem(buf, len);
|
|
|
|
if (ret) {
|
|
printf("SPI flash %s failed\n", argv[0]);
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
|
|
usage:
|
|
printf("Usage: sf %s addr offset len\n", argv[0]);
|
|
return 1;
|
|
}
|
|
|
|
static int do_spi_flash_erase(int argc, char *argv[])
|
|
{
|
|
unsigned long offset;
|
|
unsigned long len;
|
|
char *endp;
|
|
int ret;
|
|
|
|
if (argc < 3)
|
|
goto usage;
|
|
|
|
offset = simple_strtoul(argv[1], &endp, 16);
|
|
if (*argv[1] == 0 || *endp != 0)
|
|
goto usage;
|
|
len = simple_strtoul(argv[2], &endp, 16);
|
|
if (*argv[2] == 0 || *endp != 0)
|
|
goto usage;
|
|
|
|
ret = spi_flash_erase(flash, offset, len);
|
|
if (ret) {
|
|
printf("SPI flash %s failed\n", argv[0]);
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
|
|
usage:
|
|
puts("Usage: sf erase offset len\n");
|
|
return 1;
|
|
}
|
|
|
|
static int do_spi_flash(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
|
|
{
|
|
const char *cmd;
|
|
|
|
/* need at least two arguments */
|
|
if (argc < 2)
|
|
goto usage;
|
|
|
|
cmd = argv[1];
|
|
|
|
if (strcmp(cmd, "probe") == 0)
|
|
return do_spi_flash_probe(argc - 1, argv + 1);
|
|
|
|
/* The remaining commands require a selected device */
|
|
if (!flash) {
|
|
puts("No SPI flash selected. Please run `sf probe'\n");
|
|
return 1;
|
|
}
|
|
|
|
if (strcmp(cmd, "read") == 0 || strcmp(cmd, "write") == 0)
|
|
return do_spi_flash_read_write(argc - 1, argv + 1);
|
|
if (strcmp(cmd, "erase") == 0)
|
|
return do_spi_flash_erase(argc - 1, argv + 1);
|
|
|
|
usage:
|
|
cmd_usage(cmdtp);
|
|
return 1;
|
|
}
|
|
|
|
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"
|
|
" and chip select\n"
|
|
"sf read addr offset len - read `len' bytes starting at\n"
|
|
" `offset' to memory at `addr'\n"
|
|
"sf write addr offset len - write `len' bytes from memory\n"
|
|
" at `addr' to flash at `offset'\n"
|
|
"sf erase offset len - erase `len' bytes from `offset'\n");
|