mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-29 18:19:02 +00:00
145d896e0e
Tested on BananaPi R2 (SD, eMMC), BananaPi R64 (SD, eMMC, SPI-NAND) and UniElec U7623-02 (eMMC). Signed-off-by: Daniel Golle <daniel@makrotopia.org>
117 lines
2.9 KiB
Diff
117 lines
2.9 KiB
Diff
--- a/cmd/Kconfig
|
|
+++ b/cmd/Kconfig
|
|
@@ -483,6 +483,12 @@ config CMD_ENV_EXISTS
|
|
Check if a variable is defined in the environment for use in
|
|
shell scripting.
|
|
|
|
+config CMD_ENV_READMEM
|
|
+ bool "env readmem"
|
|
+ default y
|
|
+ help
|
|
+ Store memory content into environment variable.
|
|
+
|
|
config CMD_ENV_CALLBACK
|
|
bool "env callbacks - print callbacks and their associated variables"
|
|
help
|
|
--- a/cmd/nvedit.c
|
|
+++ b/cmd/nvedit.c
|
|
@@ -408,6 +408,60 @@ int do_env_ask(struct cmd_tbl *cmdtp, in
|
|
}
|
|
#endif
|
|
|
|
+#if defined(CONFIG_CMD_ENV_READMEM)
|
|
+int do_env_readmem(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
|
|
+{
|
|
+ char varstr[CONFIG_SYS_CBSIZE];
|
|
+ const void *buf;
|
|
+ char *local_args[4];
|
|
+ ulong addr, bytes = 6;
|
|
+ int hexdump = 0;
|
|
+
|
|
+ /*
|
|
+ * Check the syntax:
|
|
+ *
|
|
+ * readmem [-b] name address [size]
|
|
+ */
|
|
+ if (argc < 3)
|
|
+ return CMD_RET_USAGE;
|
|
+
|
|
+ local_args[0] = argv[0];
|
|
+
|
|
+ if (!strncmp(argv[1], "-b", 3))
|
|
+ hexdump = 1;
|
|
+
|
|
+ local_args[1] = argv[hexdump + 1];
|
|
+ local_args[2] = varstr;
|
|
+ local_args[3] = NULL;
|
|
+
|
|
+ addr = simple_strtoul(argv[hexdump + 2], NULL, 16);
|
|
+
|
|
+ if (!hexdump)
|
|
+ bytes = simple_strtoul(argv[hexdump + 3], NULL, 16);
|
|
+
|
|
+ if (bytes < 1)
|
|
+ return 1;
|
|
+
|
|
+ if ((hexdump * 3) * bytes >= CONFIG_SYS_CBSIZE)
|
|
+ return 1;
|
|
+
|
|
+ buf = map_sysmem(addr, bytes);
|
|
+ if (!buf)
|
|
+ return 1;
|
|
+
|
|
+ if (hexdump) {
|
|
+ sprintf(varstr, "%pM", buf);
|
|
+ } else {
|
|
+ memcpy(varstr, buf, bytes);
|
|
+ varstr[bytes] = '\0';
|
|
+ }
|
|
+ unmap_sysmem(buf);
|
|
+
|
|
+ /* Continue calling setenv code */
|
|
+ return _do_env_set(flag, 3, local_args, H_INTERACTIVE);
|
|
+}
|
|
+#endif
|
|
+
|
|
#if defined(CONFIG_CMD_ENV_CALLBACK)
|
|
static int print_static_binding(const char *var_name, const char *callback_name,
|
|
void *priv)
|
|
@@ -1189,6 +1243,9 @@ static struct cmd_tbl cmd_env_sub[] = {
|
|
U_BOOT_CMD_MKENT(load, 1, 0, do_env_load, "", ""),
|
|
#endif
|
|
U_BOOT_CMD_MKENT(print, CONFIG_SYS_MAXARGS, 1, do_env_print, "", ""),
|
|
+#if defined(CONFIG_CMD_ENV_READMEM)
|
|
+ U_BOOT_CMD_MKENT(readmem, CONFIG_SYS_MAXARGS, 3, do_env_readmem, "", ""),
|
|
+#endif
|
|
#if defined(CONFIG_CMD_RUN)
|
|
U_BOOT_CMD_MKENT(run, CONFIG_SYS_MAXARGS, 1, do_run, "", ""),
|
|
#endif
|
|
@@ -1277,6 +1334,9 @@ static char env_help_text[] =
|
|
#if defined(CONFIG_CMD_NVEDIT_EFI)
|
|
"env print -e [-guid guid] [-n] [name ...] - print UEFI environment\n"
|
|
#endif
|
|
+#if defined(CONFIG_CMD_ENV_READMEM)
|
|
+ "env readmem [-b] name address size - read variable from memory\n"
|
|
+#endif
|
|
#if defined(CONFIG_CMD_RUN)
|
|
"env run var [...] - run commands in an environment variable\n"
|
|
#endif
|
|
@@ -1386,6 +1446,17 @@ U_BOOT_CMD(
|
|
);
|
|
#endif
|
|
|
|
+#if defined(CONFIG_CMD_ENV_READMEM)
|
|
+U_BOOT_CMD_COMPLETE(
|
|
+ readmem, CONFIG_SYS_MAXARGS, 3, do_env_readmem,
|
|
+ "get environment variable from memory address",
|
|
+ "name [-b] address size\n"
|
|
+ " - store memory address to env variable\n"
|
|
+ " \"-b\": read binary ethaddr",
|
|
+ var_complete
|
|
+);
|
|
+#endif
|
|
+
|
|
#if defined(CONFIG_CMD_RUN)
|
|
U_BOOT_CMD_COMPLETE(
|
|
run, CONFIG_SYS_MAXARGS, 1, do_run,
|