From: Dmitry Rokosov Date: Thu, 17 Oct 2024 14:12:07 +0000 (+0300) Subject: cmd: bcb: rework the command to U_BOOT_LONGHELP approach X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=a8ca7d46ea744381185c0bf70cbdf4db7dc734b7;p=u-boot.git cmd: bcb: rework the command to U_BOOT_LONGHELP approach U_BOOT_LONGHELP and U_BOOT_CMD_WITH_SUBCMDS offer numerous advantages, including: - common argument restrictions checking - automatic subcommand matching - improved usage and help handling By utilizing the U_BOOT_LONGHELP approach, we can reduce the amount of command management code and describe commands more succinctly. Signed-off-by: Dmitry Rokosov Reviewed-by: Mattijs Korpershoek Tested-by: Mattijs Korpershoek # vim3_android Link: https://lore.kernel.org/r/20241017-android_ab_master-v5-2-43bfcc096d95@salutedevices.com Signed-off-by: Mattijs Korpershoek --- diff --git a/cmd/bcb.c b/cmd/bcb.c index 97a96c0096..98b2a71087 100644 --- a/cmd/bcb.c +++ b/cmd/bcb.c @@ -16,15 +16,6 @@ #include #include -enum bcb_cmd { - BCB_CMD_LOAD, - BCB_CMD_FIELD_SET, - BCB_CMD_FIELD_CLEAR, - BCB_CMD_FIELD_TEST, - BCB_CMD_FIELD_DUMP, - BCB_CMD_STORE, -}; - static const char * const fields[] = { "command", "status", @@ -38,67 +29,9 @@ static struct disk_partition partition_data; static struct blk_desc *block; static struct disk_partition *partition = &partition_data; -static int bcb_cmd_get(char *cmd) -{ - if (!strcmp(cmd, "load")) - return BCB_CMD_LOAD; - if (!strcmp(cmd, "set")) - return BCB_CMD_FIELD_SET; - if (!strcmp(cmd, "clear")) - return BCB_CMD_FIELD_CLEAR; - if (!strcmp(cmd, "test")) - return BCB_CMD_FIELD_TEST; - if (!strcmp(cmd, "store")) - return BCB_CMD_STORE; - if (!strcmp(cmd, "dump")) - return BCB_CMD_FIELD_DUMP; - else - return -1; -} - -static int bcb_is_misused(int argc, char *const argv[]) +static int bcb_not_loaded(void) { - int cmd = bcb_cmd_get(argv[0]); - - switch (cmd) { - case BCB_CMD_LOAD: - if (argc != 3 && argc != 4) - goto err; - break; - case BCB_CMD_FIELD_SET: - if (argc != 3) - goto err; - break; - case BCB_CMD_FIELD_TEST: - if (argc != 4) - goto err; - break; - case BCB_CMD_FIELD_CLEAR: - if (argc != 1 && argc != 2) - goto err; - break; - case BCB_CMD_STORE: - if (argc != 1) - goto err; - break; - case BCB_CMD_FIELD_DUMP: - if (argc != 2) - goto err; - break; - default: - printf("Error: 'bcb %s' not supported\n", argv[0]); - return -1; - } - - if (cmd != BCB_CMD_LOAD && !block) { - printf("Error: Please, load BCB first!\n"); - return -1; - } - - return 0; -err: - printf("Error: Bad usage of 'bcb %s'\n", argv[0]); - + printf("Error: Please, load BCB first!\n"); return -1; } @@ -216,6 +149,9 @@ static int do_bcb_load(struct cmd_tbl *cmdtp, int flag, int argc, char *endp; char *iface = "mmc"; + if (argc < 3) + return CMD_RET_USAGE; + if (argc == 4) { iface = argv[1]; argc--; @@ -270,6 +206,12 @@ static int __bcb_set(const char *fieldp, const char *valp) static int do_bcb_set(struct cmd_tbl *cmdtp, int flag, int argc, char * const argv[]) { + if (argc < 3) + return CMD_RET_USAGE; + + if (!block) + return bcb_not_loaded(); + return __bcb_set(argv[1], argv[2]); } @@ -279,6 +221,9 @@ static int do_bcb_clear(struct cmd_tbl *cmdtp, int flag, int argc, int size; char *field; + if (!block) + return bcb_not_loaded(); + if (argc == 1) { memset(&bcb, 0, sizeof(bcb)); return CMD_RET_SUCCESS; @@ -297,7 +242,15 @@ static int do_bcb_test(struct cmd_tbl *cmdtp, int flag, int argc, { int size; char *field; - char *op = argv[2]; + char *op; + + if (argc < 4) + return CMD_RET_USAGE; + + if (!block) + return bcb_not_loaded(); + + op = argv[2]; if (bcb_field_get(argv[1], &field, &size)) return CMD_RET_FAILURE; @@ -325,6 +278,12 @@ static int do_bcb_dump(struct cmd_tbl *cmdtp, int flag, int argc, int size; char *field; + if (argc < 2) + return CMD_RET_USAGE; + + if (!block) + return bcb_not_loaded(); + if (bcb_field_get(argv[1], &field, &size)) return CMD_RET_FAILURE; @@ -356,6 +315,9 @@ err: static int do_bcb_store(struct cmd_tbl *cmdtp, int flag, int argc, char * const argv[]) { + if (!block) + return bcb_not_loaded(); + return __bcb_store(); } @@ -414,44 +376,7 @@ void bcb_reset(void) __bcb_reset(); } -static struct cmd_tbl cmd_bcb_sub[] = { - U_BOOT_CMD_MKENT(load, CONFIG_SYS_MAXARGS, 1, do_bcb_load, "", ""), - U_BOOT_CMD_MKENT(set, CONFIG_SYS_MAXARGS, 1, do_bcb_set, "", ""), - U_BOOT_CMD_MKENT(clear, CONFIG_SYS_MAXARGS, 1, do_bcb_clear, "", ""), - U_BOOT_CMD_MKENT(test, CONFIG_SYS_MAXARGS, 1, do_bcb_test, "", ""), - U_BOOT_CMD_MKENT(dump, CONFIG_SYS_MAXARGS, 1, do_bcb_dump, "", ""), - U_BOOT_CMD_MKENT(store, CONFIG_SYS_MAXARGS, 1, do_bcb_store, "", ""), -}; - -static int do_bcb(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) -{ - struct cmd_tbl *c; - - if (argc < 2) - return CMD_RET_USAGE; - - argc--; - argv++; - - c = find_cmd_tbl(argv[0], cmd_bcb_sub, ARRAY_SIZE(cmd_bcb_sub)); - if (!c) - return CMD_RET_USAGE; - - if (bcb_is_misused(argc, argv)) { - /* - * We try to improve the user experience by reporting the - * root-cause of misusage, so don't return CMD_RET_USAGE, - * since the latter prints out the full-blown help text - */ - return CMD_RET_FAILURE; - } - - return c->cmd(cmdtp, flag, argc, argv); -} - -U_BOOT_CMD( - bcb, CONFIG_SYS_MAXARGS, 1, do_bcb, - "Load/set/clear/test/dump/store Android BCB fields", +U_BOOT_LONGHELP(bcb, "load - load BCB from :\n" "load - load BCB from mmc :\n" "bcb set - set BCB to \n" @@ -472,3 +397,13 @@ U_BOOT_CMD( " NOTE: any ':' character in will be replaced by line feed\n" " during 'bcb set' and used as separator by upper layers\n" ); + +U_BOOT_CMD_WITH_SUBCMDS(bcb, + "Load/set/clear/test/dump/store Android BCB fields", bcb_help_text, + U_BOOT_SUBCMD_MKENT(load, 4, 1, do_bcb_load), + U_BOOT_SUBCMD_MKENT(set, 3, 1, do_bcb_set), + U_BOOT_SUBCMD_MKENT(clear, 2, 1, do_bcb_clear), + U_BOOT_SUBCMD_MKENT(test, 4, 1, do_bcb_test), + U_BOOT_SUBCMD_MKENT(dump, 2, 1, do_bcb_dump), + U_BOOT_SUBCMD_MKENT(store, 1, 1, do_bcb_store), +);