diff options
Diffstat (limited to 'cmd/fdt.c')
| -rw-r--r-- | cmd/fdt.c | 34 |
1 files changed, 28 insertions, 6 deletions
diff --git a/cmd/fdt.c b/cmd/fdt.c index 842e6cb634b..6fbd9205d38 100644 --- a/cmd/fdt.c +++ b/cmd/fdt.c @@ -48,11 +48,27 @@ void set_working_fdt_addr(ulong addr) /* * Get a value from the fdt and format it to be set in the environment */ -static int fdt_value_env_set(const void *nodep, int len, const char *var) +static int fdt_value_env_set(const void *nodep, int len, + const char *var, int index) { - if (is_printable_string(nodep, len)) - env_set(var, (void *)nodep); - else if (len == 4) { + if (is_printable_string(nodep, len)) { + const char *nodec = (const char *)nodep; + int i; + + /* + * Iterate over all members in stringlist and find the one at + * offset $index. If no such index exists, indicate failure. + */ + for (i = 0; i < len; i += strlen(nodec) + 1) { + if (index-- > 0) + continue; + + env_set(var, nodec + i); + return 0; + } + + return 1; + } else if (len == 4) { char buf[11]; sprintf(buf, "0x%08X", fdt32_to_cpu(*(fdt32_t *)nodep)); @@ -426,10 +442,14 @@ static int do_fdt(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) return 0; } else if (nodep && len > 0) { if (subcmd[0] == 'v') { + int index = 0; int ret; + if (argc == 7) + index = simple_strtoul(argv[6], NULL, 10); + ret = fdt_value_env_set(nodep, len, - var); + var, index); if (ret != 0) return ret; } else if (subcmd[0] == 'a') { @@ -1085,7 +1105,9 @@ static char fdt_help_text[] = "fdt resize [<extrasize>] - Resize fdt to size + padding to 4k addr + some optional <extrasize> if needed\n" "fdt print <path> [<prop>] - Recursive print starting at <path>\n" "fdt list <path> [<prop>] - Print one level starting at <path>\n" - "fdt get value <var> <path> <prop> - Get <property> and store in <var>\n" + "fdt get value <var> <path> <prop> [<index>] - Get <property> and store in <var>\n" + " In case of stringlist property, use optional <index>\n" + " to select string within the stringlist. Default is 0.\n" "fdt get name <var> <path> <index> - Get name of node <index> and store in <var>\n" "fdt get addr <var> <path> <prop> - Get start address of <property> and store in <var>\n" "fdt get size <var> <path> [<prop>] - Get size of [<property>] or num nodes and store in <var>\n" |