diff options
| author | Simon Glass | 2020-09-05 14:50:45 -0600 |
|---|---|---|
| committer | Bin Meng | 2020-09-25 11:27:09 +0800 |
| commit | 6f873f5fc64809a6fabb4dda926765683743a638 (patch) | |
| tree | 8d895537ebe1a7d268af3de94da042fc6472eca0 /arch/x86/lib/zimage.c | |
| parent | 88f1cd6c2a9f3418aa845ced90771e1333221ace (diff) | |
x86: zboot: Add an 'info' subcommand
Add a little subcommand that prints out where the kernel was loaded and
its setup pointer. Run it by default in the normal boot.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Diffstat (limited to 'arch/x86/lib/zimage.c')
| -rw-r--r-- | arch/x86/lib/zimage.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/arch/x86/lib/zimage.c b/arch/x86/lib/zimage.c index aabf911396c..4a1a3c3a720 100644 --- a/arch/x86/lib/zimage.c +++ b/arch/x86/lib/zimage.c @@ -68,9 +68,10 @@ struct zboot_state { enum { ZBOOT_STATE_START = BIT(0), - ZBOOT_STATE_GO = BIT(1), + ZBOOT_STATE_INFO = BIT(1), + ZBOOT_STATE_GO = BIT(2), - ZBOOT_STATE_COUNT = 2, + ZBOOT_STATE_COUNT = 3, }; static void build_command_line(char *command_line, int auto_boot) @@ -383,6 +384,15 @@ static int do_zboot_start(struct cmd_tbl *cmdtp, int flag, int argc, return 0; } +static int do_zboot_info(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + printf("Kernel loaded at %08lx, setup_base=%p\n", + state.load_address, state.base_ptr); + + return 0; +} + static int do_zboot_go(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { @@ -401,6 +411,7 @@ static int do_zboot_go(struct cmd_tbl *cmdtp, int flag, int argc, /* Note: This defines the complete_zboot() function */ U_BOOT_SUBCMDS(zboot, U_BOOT_CMD_MKENT(start, 6, 1, do_zboot_start, "", ""), + U_BOOT_CMD_MKENT(info, 1, 1, do_zboot_info, "", ""), U_BOOT_CMD_MKENT(go, 1, 1, do_zboot_go, "", ""), ) @@ -441,7 +452,7 @@ int do_zboot_parent(struct cmd_tbl *cmdtp, int flag, int argc, } do_zboot_states(cmdtp, flag, argc, argv, ZBOOT_STATE_START | - ZBOOT_STATE_GO); + ZBOOT_STATE_INFO | ZBOOT_STATE_GO); return CMD_RET_FAILURE; } @@ -459,6 +470,7 @@ U_BOOT_CMDREP_COMPLETE( "\n" "Sub-commands to do part of the zboot sequence:\n" "\tstart [addr [arg ...]] - specify arguments\n" + "\tinfo - show summary info\n" "\tgo - start OS\n", complete_zboot ); |