x86: zboot: Add an 'setup' subcommand
Add a subcommand that sets up the kernel ready for execution.
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>
diff --git a/arch/x86/lib/zimage.c b/arch/x86/lib/zimage.c
index 1379636..92c9cac 100644
--- a/arch/x86/lib/zimage.c
+++ b/arch/x86/lib/zimage.c
@@ -69,10 +69,11 @@
enum {
ZBOOT_STATE_START = BIT(0),
ZBOOT_STATE_LOAD = BIT(1),
- ZBOOT_STATE_INFO = BIT(2),
- ZBOOT_STATE_GO = BIT(3),
+ ZBOOT_STATE_SETUP = BIT(2),
+ ZBOOT_STATE_INFO = BIT(3),
+ ZBOOT_STATE_GO = BIT(4),
- ZBOOT_STATE_COUNT = 4,
+ ZBOOT_STATE_COUNT = 5,
};
static void build_command_line(char *command_line, int auto_boot)
@@ -382,10 +383,24 @@
}
state.base_ptr = base_ptr;
- if (setup_zimage(base_ptr, (char *)base_ptr + COMMAND_LINE_OFFSET, 0,
- state.initrd_addr, state.initrd_size)) {
+ return 0;
+}
+
+static int do_zboot_setup(struct cmd_tbl *cmdtp, int flag, int argc,
+ char *const argv[])
+{
+ struct boot_params *base_ptr = state.base_ptr;
+ int ret;
+
+ if (!base_ptr) {
+ printf("base is not set: use 'zboot load' first\n");
+ return CMD_RET_FAILURE;
+ }
+ ret = setup_zimage(base_ptr, (char *)base_ptr + COMMAND_LINE_OFFSET,
+ 0, state.initrd_addr, state.initrd_size);
+ if (ret) {
puts("Setting up boot parameters failed ...\n");
- return -1;
+ return CMD_RET_FAILURE;
}
return 0;
@@ -419,6 +434,7 @@
U_BOOT_SUBCMDS(zboot,
U_BOOT_CMD_MKENT(start, 6, 1, do_zboot_start, "", ""),
U_BOOT_CMD_MKENT(load, 1, 1, do_zboot_load, "", ""),
+ U_BOOT_CMD_MKENT(setup, 1, 1, do_zboot_setup, "", ""),
U_BOOT_CMD_MKENT(info, 1, 1, do_zboot_info, "", ""),
U_BOOT_CMD_MKENT(go, 1, 1, do_zboot_go, "", ""),
)
@@ -460,7 +476,8 @@
}
do_zboot_states(cmdtp, flag, argc, argv, ZBOOT_STATE_START |
- ZBOOT_STATE_LOAD | ZBOOT_STATE_INFO | ZBOOT_STATE_GO);
+ ZBOOT_STATE_LOAD | ZBOOT_STATE_SETUP |
+ ZBOOT_STATE_INFO | ZBOOT_STATE_GO);
return CMD_RET_FAILURE;
}
@@ -479,6 +496,7 @@
"Sub-commands to do part of the zboot sequence:\n"
"\tstart [addr [arg ...]] - specify arguments\n"
"\tload - load OS image\n"
+ "\tsetup - set up table\n"
"\tinfo - show summary info\n"
"\tgo - start OS\n",
complete_zboot