This commit adds a stage pre-load to the command bootm. Right now, this stage may be used to read a header and check the signature of the full image.
Signed-off-by: Philippe Reynes philippe.reynes@softathome.com --- cmd/Kconfig | 9 +++++++++ cmd/bootm.c | 2 +- common/bootm.c | 33 +++++++++++++++++++++++++++++++++ include/image.h | 1 + 4 files changed, 44 insertions(+), 1 deletion(-)
diff --git a/cmd/Kconfig b/cmd/Kconfig index 5b30b13e43..b20a346acf 100644 --- a/cmd/Kconfig +++ b/cmd/Kconfig @@ -194,6 +194,15 @@ config CMD_BOOTM help Boot an application image from the memory.
+config CMD_BOOTM_PRE_LOAD + bool "enable pre-load on bootm" + depends on CMD_BOOTM + default n + help + Enable support of stage pre-load for the bootm command. + This stage allow to check of modifty the image provided + to the bootm command. + config BOOTM_EFI bool "Support booting UEFI FIT images" depends on CMD_BOOTEFI && CMD_BOOTM && FIT diff --git a/cmd/bootm.c b/cmd/bootm.c index 92468d09a1..acfb8eedde 100644 --- a/cmd/bootm.c +++ b/cmd/bootm.c @@ -126,7 +126,7 @@ int do_bootm(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) }
return do_bootm_states(cmdtp, flag, argc, argv, BOOTM_STATE_START | - BOOTM_STATE_FINDOS | BOOTM_STATE_FINDOTHER | + BOOTM_STATE_FINDOS | BOOTM_STATE_PRE_LOAD | BOOTM_STATE_FINDOTHER | BOOTM_STATE_LOADOS | #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH BOOTM_STATE_RAMDISK | diff --git a/common/bootm.c b/common/bootm.c index 4482f84b40..4803c577cc 100644 --- a/common/bootm.c +++ b/common/bootm.c @@ -87,6 +87,33 @@ static int bootm_start(struct cmd_tbl *cmdtp, int flag, int argc, return 0; }
+static ulong bootm_data_addr(int argc, char *const argv[]) +{ + ulong addr; + + if (argc > 0) + addr = simple_strtoul(argv[0], NULL, 16); + else + addr = image_load_addr; + + return addr; +} + +static int bootm_pre_load(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + ulong data_addr = bootm_data_addr(argc, argv); + int ret = 0; + + if (CONFIG_IS_ENABLED(CMD_BOOTM_PRE_LOAD)) + ret = image_pre_load(data_addr); + + if (ret) + ret = CMD_RET_FAILURE; + + return ret; +} + static int bootm_find_os(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { @@ -677,6 +704,9 @@ int do_bootm_states(struct cmd_tbl *cmdtp, int flag, int argc, if (states & BOOTM_STATE_START) ret = bootm_start(cmdtp, flag, argc, argv);
+ if (!ret && (states & BOOTM_STATE_PRE_LOAD)) + ret = bootm_pre_load(cmdtp, flag, argc, argv); + if (!ret && (states & BOOTM_STATE_FINDOS)) ret = bootm_find_os(cmdtp, flag, argc, argv);
@@ -866,6 +896,9 @@ static const void *boot_get_kernel(struct cmd_tbl *cmdtp, int flag, int argc, &fit_uname_config, &fit_uname_kernel);
+ if (CONFIG_IS_ENABLED(CMD_BOOTM_PRE_LOAD)) + img_addr += image_load_offset; + bootstage_mark(BOOTSTAGE_ID_CHECK_MAGIC);
/* check image type, for FIT images get FIT kernel node */ diff --git a/include/image.h b/include/image.h index 5f83e4c747..42fb01ab07 100644 --- a/include/image.h +++ b/include/image.h @@ -351,6 +351,7 @@ typedef struct bootm_headers { #define BOOTM_STATE_OS_PREP (0x00000100) #define BOOTM_STATE_OS_FAKE_GO (0x00000200) /* 'Almost' run the OS */ #define BOOTM_STATE_OS_GO (0x00000400) +#define BOOTM_STATE_PRE_LOAD (0x00000800) int state;
#if defined(CONFIG_LMB) && !defined(USE_HOSTCC)