From: Roland Gaudig roland.gaudig@weidmueller.com
This patch extends the setexpr command with a dec operator to convert an input value to decimal.
Signed-off-by: Roland Gaudig roland.gaudig@weidmueller.com --- cmd/setexpr.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-)
diff --git a/cmd/setexpr.c b/cmd/setexpr.c index e828be3970..2d4bee2182 100644 --- a/cmd/setexpr.c +++ b/cmd/setexpr.c @@ -370,15 +370,16 @@ static int do_setexpr(struct cmd_tbl *cmdtp, int flag, int argc, int w;
/* - * We take 3, 5, or 6 arguments: + * We take 3, 4, 5, or 6 arguments: * 3 : setexpr name value + * 4 : setexpr name dec value * 5 : setexpr name val1 op val2 * setexpr name [g]sub r s * 6 : setexpr name [g]sub r s t */
/* > 6 already tested by max command args */ - if ((argc < 3) || (argc == 4)) + if (argc < 3) return CMD_RET_USAGE;
w = cmd_get_data_size(argv[0], 4); @@ -398,6 +399,13 @@ static int do_setexpr(struct cmd_tbl *cmdtp, int flag, int argc, return ret; }
+ /* hexadecimal to decimal conversion: "setexpr name dec value" */ + if (argc == 4 && (strcmp(argv[2], "dec") == 0)) { + w = cmd_get_data_size(argv[3], 4); + a = get_arg(argv[3], w); + return env_set_ulong(argv[1], a); + } + /* 5 or 6 args (6 args only with [g]sub) */ #ifdef CONFIG_REGEX /* @@ -515,4 +523,8 @@ U_BOOT_CMD( "setexpr name sub r s [t]\n" " - Just like gsub(), but replace only the first matching substring" #endif + "\n" + "setexpr name dec [*]value\n" + " - set environment variable 'name' to the result of the decimal\n" + " conversion of [*]value.\n" );