x86: zboot: Move zimage definitions to the header file

In preparation for splitting the zboot-command code into a separate
file, move the definitions into the header file.

While we are here, mention when load_address and base_ptr are set up
and explain bzimage_addr better. Make cmdline const since it cannot be
changed.

Signed-off-by: Simon Glass <sjg@chromium.org>

2 files changed, 42 insertions, 35 deletions

diff --git a/arch/x86/include/asm/zimage.h b/arch/x86/include/asm/zimage.h
index 655675b..a91cfb2 100644
--- a/arch/x86/include/asm/zimage.h
+++ b/arch/x86/include/asm/zimage.h
@@ -30,6 +30,47 @@
 #define BZIMAGE_LOAD_ADDR  0x100000
 #define ZIMAGE_LOAD_ADDR   0x10000
 
+enum {
+	ZBOOT_STATE_START	= BIT(0),
+	ZBOOT_STATE_LOAD	= BIT(1),
+	ZBOOT_STATE_SETUP	= BIT(2),
+	ZBOOT_STATE_INFO	= BIT(3),
+	ZBOOT_STATE_GO		= BIT(4),
+
+	/* This one doesn't execute automatically, so stop the count before 5 */
+	ZBOOT_STATE_DUMP	= BIT(5),
+	ZBOOT_STATE_COUNT	= 5,
+};
+
+/**
+ * struct zboot_state - Current state of the boot
+ *
+ * @bzimage_addr: Address of the bzImage to boot, or 0 if the image has already
+ *	been loaded and does not exist (as a cohesive whole) in memory
+ * @bzimage_size: Size of the bzImage, or 0 to detect this
+ * @initrd_addr: Address of the initial ramdisk, or 0 if none
+ * @initrd_size: Size of the initial ramdisk, or 0 if none
+ * @load_address: Address where the bzImage is moved before booting, either
+ *	BZIMAGE_LOAD_ADDR or ZIMAGE_LOAD_ADDR
+ *	This is set up when loading the zimage
+ * @base_ptr: Pointer to the boot parameters, typically at address
+ *	DEFAULT_SETUP_BASE
+ *	This is set up when loading the zimage
+ * @cmdline: Environment variable containing the 'override' command line, or
+ *	NULL to use the one in the setup block
+ */
+struct zboot_state {
+	ulong bzimage_addr;
+	ulong bzimage_size;
+	ulong initrd_addr;
+	ulong initrd_size;
+	ulong load_address;
+	struct boot_params *base_ptr;
+	const char *cmdline;
+};
+
+extern struct zboot_state state;
+
 /**
  * load_zimage() - Load a zImage or bzImage
  *
diff --git a/arch/x86/lib/zimage.c b/arch/x86/lib/zimage.c
index a41e1cc..b04d39b 100644
--- a/arch/x86/lib/zimage.c
+++ b/arch/x86/lib/zimage.c
@@ -56,41 +56,7 @@ DECLARE_GLOBAL_DATA_PTR;
 
 #define COMMAND_LINE_SIZE	2048
 
-/**
- * struct zboot_state - Current state of the boot
- *
- * @bzimage_addr: Address of the bzImage to boot
- * @bzimage_size: Size of the bzImage, or 0 to detect this
- * @initrd_addr: Address of the initial ramdisk, or 0 if none
- * @initrd_size: Size of the initial ramdisk, or 0 if none
- * @load_address: Address where the bzImage is moved before booting, either
- *	BZIMAGE_LOAD_ADDR or ZIMAGE_LOAD_ADDR
- * @base_ptr: Pointer to the boot parameters, typically at address
- *	DEFAULT_SETUP_BASE
- * @cmdline: Environment variable containing the 'override' command line, or
- *	NULL to use the one in the setup block
- */
-struct zboot_state {
-	ulong bzimage_addr;
-	ulong bzimage_size;
-	ulong initrd_addr;
-	ulong initrd_size;
-	ulong load_address;
-	struct boot_params *base_ptr;
-	char *cmdline;
-} state;
-
-enum {
-	ZBOOT_STATE_START	= BIT(0),
-	ZBOOT_STATE_LOAD	= BIT(1),
-	ZBOOT_STATE_SETUP	= BIT(2),
-	ZBOOT_STATE_INFO	= BIT(3),
-	ZBOOT_STATE_GO		= BIT(4),
-
-	/* This one doesn't execute automatically, so stop the count before 5 */
-	ZBOOT_STATE_DUMP	= BIT(5),
-	ZBOOT_STATE_COUNT	= 5,
-};
+struct zboot_state state;
 
 static void build_command_line(char *command_line, int auto_boot)
 {