diff options
Diffstat (limited to 'mmc_cmds.c')
| -rw-r--r-- | mmc_cmds.c | 72 |
1 files changed, 72 insertions, 0 deletions
@@ -303,6 +303,75 @@ int do_write_boot_en(int nargs, char **argv) return ret; } +int do_boot_bus_conditions_set(int nargs, char **argv) +{ + __u8 ext_csd[512]; + __u8 value = 0; + int fd, ret; + char *device; + + CHECK(nargs != 5, "Usage: mmc: bootbus set <boot_mode> " + "<reset_boot_bus_conditions> <boot_bus_width> <device>\n", + exit(1)); + + if (strcmp(argv[1], "single_backward") == 0) + value |= 0; + else if (strcmp(argv[1], "single_hs") == 0) + value |= 0x8; + else if (strcmp(argv[1], "dual") == 0) + value |= 0x10; + else { + fprintf(stderr, "illegal <boot_mode> specified\n"); + exit(1); + } + + if (strcmp(argv[2], "x1") == 0) + value |= 0; + else if (strcmp(argv[2], "retain") == 0) + value |= 0x4; + else { + fprintf(stderr, + "illegal <reset_boot_bus_conditions> specified\n"); + exit(1); + } + + if (strcmp(argv[3], "x1") == 0) + value |= 0; + else if (strcmp(argv[3], "x4") == 0) + value |= 0x1; + else if (strcmp(argv[3], "x8") == 0) + value |= 0x2; + else { + fprintf(stderr, "illegal <boot_bus_width> specified\n"); + exit(1); + } + + device = argv[4]; + fd = open(device, O_RDWR); + if (fd < 0) { + perror("open"); + exit(1); + } + + ret = read_extcsd(fd, ext_csd); + if (ret) { + fprintf(stderr, "Could not read EXT_CSD from %s\n", device); + exit(1); + } + printf("Changing ext_csd[BOOT_BUS_CONDITIONS] from 0x%02x to 0x%02x\n", + ext_csd[EXT_CSD_BOOT_BUS_CONDITIONS], value); + + ret = write_extcsd_value(fd, EXT_CSD_BOOT_BUS_CONDITIONS, value); + if (ret) { + fprintf(stderr, "Could not write 0x%02x to " + "EXT_CSD[%d] in %s\n", + value, EXT_CSD_BOOT_BUS_CONDITIONS, device); + exit(1); + } + close(fd); + return ret; +} + int do_hwreset(int value, int nargs, char **argv) { __u8 ext_csd[512]; @@ -948,6 +1017,9 @@ int do_read_extcsd(int nargs, char **argv) ext_csd_rev = ext_csd[192]; switch (ext_csd_rev) { + case 7: + str = "5.0"; + break; case 6: str = "4.5"; break; |