diff options
Diffstat (limited to 'package/boot/uboot-mediatek/patches/220-cmd-env-readmem.patch')
| -rw-r--r-- | package/boot/uboot-mediatek/patches/220-cmd-env-readmem.patch | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/package/boot/uboot-mediatek/patches/220-cmd-env-readmem.patch b/package/boot/uboot-mediatek/patches/220-cmd-env-readmem.patch new file mode 100644 index 0000000000..705b749e71 --- /dev/null +++ b/package/boot/uboot-mediatek/patches/220-cmd-env-readmem.patch @@ -0,0 +1,116 @@ +--- a/cmd/Kconfig ++++ b/cmd/Kconfig +@@ -465,6 +465,12 @@ 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 +@@ -473,6 +473,60 @@ 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) +@@ -1377,6 +1431,9 @@ 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 +@@ -1465,6 +1522,9 @@ 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 +@@ -1574,6 +1634,17 @@ 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, |