From be940f1a513b5167963174eca1d9509aaddda2fe Mon Sep 17 00:00:00 2001 From: Christoph Fritz Date: Mon, 18 Jun 2018 12:03:58 +0200 Subject: mmc_extcsd command: Add cmd option to set bkops-enable This patch is for convenience to set bkops-enable (EXT_CSD_BKOPS_EN[163]) on devices which have it not yet activated. Signed-off-by: Christoph Fritz Signed-off-by: Sascha Hauer --- commands/mmc_extcsd.c | 26 +++++++++++++++++++++++--- 1 file changed, 23 insertions(+), 3 deletions(-) (limited to 'commands') diff --git a/commands/mmc_extcsd.c b/commands/mmc_extcsd.c index 82e0600eaf..3a418ea5e9 100644 --- a/commands/mmc_extcsd.c +++ b/commands/mmc_extcsd.c @@ -1482,7 +1482,7 @@ static int print_field(u8 *reg, int index) str = "may"; else str = "shall not"; - printf("\t[1] AUTO_EN: Device %s perform background ops while" + printf("\t[1] AUTO_EN: Device %s perform background ops while\n" "\t not servicing the host\n", str); return 1; @@ -2371,11 +2371,12 @@ static int do_mmc_extcsd(int argc, char *argv[]) int write_operation = 0; int always_write = 0; int print_as_raw = 0; + int set_bkops_en = 0; if (argc < 2) return COMMAND_ERROR_USAGE; - while ((opt = getopt(argc, argv, "i:v:yr")) > 0) + while ((opt = getopt(argc, argv, "i:v:yrb")) > 0) switch (opt) { case 'i': index = simple_strtoul(optarg, NULL, 0); @@ -2390,6 +2391,13 @@ static int do_mmc_extcsd(int argc, char *argv[]) case 'r': print_as_raw = 1; break; + case 'b': + set_bkops_en = 1; + index = EXT_CSD_BKOPS_EN; + value = BIT(0); + write_operation = 1; + always_write = 1; + break; } if (optind == argc) @@ -2421,6 +2429,16 @@ static int do_mmc_extcsd(int argc, char *argv[]) goto error_with_mem; } + if (set_bkops_en) { + if (dst[index]) { + printf("Abort: EXT_CSD [%u] already set to %#02x!\n", + index, dst[index]); + goto error_with_mem; + } + if (dst[EXT_CSD_REV] >= 7) + value |= BIT(1); /* set AUTO_EN bit too */ + } + if (write_operation) if (!print_field(dst, index)) { printf("No field with this index found. Abort write operation!\n"); @@ -2466,12 +2484,14 @@ BAREBOX_CMD_HELP_OPT("-r", "print the register as raw data") BAREBOX_CMD_HELP_OPT("-v", "value which will be written") BAREBOX_CMD_HELP_OPT("-y", "don't request when writing to one time programmable fields") BAREBOX_CMD_HELP_OPT("", "__CAUTION__: this could damage the device!") +BAREBOX_CMD_HELP_OPT("-b", "set bkops-enable (EXT_CSD_BKOPS_EN[163])") +BAREBOX_CMD_HELP_OPT("", "__WARNING__: this is a write-once setting!") BAREBOX_CMD_HELP_END BAREBOX_CMD_START(mmc_extcsd) .cmd = do_mmc_extcsd, BAREBOX_CMD_DESC("Read/write the extended CSD register.") - BAREBOX_CMD_OPTS("dev [-r | -i index [-r | -v value [-y]]]") + BAREBOX_CMD_OPTS("dev [-r | -b | -i index [-r | -v value [-y]]]") BAREBOX_CMD_GROUP(CMD_GRP_CONSOLE) BAREBOX_CMD_HELP(cmd_mmc_extcsd_help) BAREBOX_CMD_END -- cgit v1.2.3