[v3,1/3] sunxi: Factor out eGON BROM header description

diff --git a/arch/arm/include/asm/arch-sunxi/spl.h b/arch/arm/include/asm/arch-sunxi/spl.h
index 8c916e8c752..7b99c1aa12d 100644
--- a/arch/arm/include/asm/arch-sunxi/spl.h
+++ b/arch/arm/include/asm/arch-sunxi/spl.h
@@ -7,19 +7,7 @@ 
 #ifndef	_ASM_ARCH_SPL_H_
 #define	_ASM_ARCH_SPL_H_
 
-#define BOOT0_MAGIC		"eGON.BT0"
-#define SPL_SIGNATURE		"SPL" /* marks "sunxi" SPL header */
-#define SPL_MAJOR_BITS		3
-#define SPL_MINOR_BITS		5
-#define SPL_VERSION(maj, min)						\
-	((((maj) & ((1U << SPL_MAJOR_BITS) - 1)) << SPL_MINOR_BITS) | \
-	((min) & ((1U << SPL_MINOR_BITS) - 1)))
-
-#define SPL_HEADER_VERSION	SPL_VERSION(0, 2)
-
-#define SPL_ENV_HEADER_VERSION	SPL_VERSION(0, 1)
-#define SPL_DT_HEADER_VERSION	SPL_VERSION(0, 2)
-#define SPL_DRAM_HEADER_VERSION	SPL_VERSION(0, 3)
+#include <sunxi_image.h>
 
 #define SPL_ADDR		CONFIG_SUNXI_SRAM_ADDRESS
 
@@ -31,57 +19,6 @@ 
 #define SUNXI_BOOTED_FROM_MMC0_HIGH	0x10
 #define SUNXI_BOOTED_FROM_MMC2_HIGH	0x12
 
-/* boot head definition from sun4i boot code */
-struct boot_file_head {
-	uint32_t b_instruction;	/* one intruction jumping to real code */
-	uint8_t magic[8];	/* ="eGON.BT0" or "eGON.BT1", not C-style str */
-	uint32_t check_sum;	/* generated by PC */
-	uint32_t length;	/* generated by PC */
-	/*
-	 * We use a simplified header, only filling in what is needed
-	 * by the boot ROM. To be compatible with Allwinner tools we
-	 * would need to implement the proper fields here instead of
-	 * padding.
-	 *
-	 * Actually we want the ability to recognize our "sunxi" variant
-	 * of the SPL. To do so, let's place a special signature into the
-	 * "pub_head_size" field. We can reasonably expect Allwinner's
-	 * boot0 to always have the upper 16 bits of this set to 0 (after
-	 * all the value shouldn't be larger than the limit imposed by
-	 * SRAM size).
-	 * If the signature is present (at 0x14), then we know it's safe
-	 * to use the remaining 8 bytes (at 0x18) for our own purposes.
-	 * (E.g. sunxi-tools "fel" utility can pass information there.)
-	 */
-	union {
-		uint32_t pub_head_size;
-		uint8_t spl_signature[4];
-	};
-	uint32_t fel_script_address;	/* since v0.1, set by sunxi-fel */
-	/*
-	 * If the fel_uEnv_length member below is set to a non-zero value,
-	 * it specifies the size (byte count) of data at fel_script_address.
-	 * At the same time this indicates that the data is in uEnv.txt
-	 * compatible format, ready to be imported via "env import -t".
-	 */
-	uint32_t fel_uEnv_length;	/* since v0.1, set by sunxi-fel */
-	/*
-	 * Offset of an ASCIIZ string (relative to the SPL header), which
-	 * contains the default device tree name (CONFIG_DEFAULT_DEVICE_TREE).
-	 * This is optional and may be set to NULL. Is intended to be used
-	 * by flash programming tools for providing nice informative messages
-	 * to the users.
-	 */
-	uint32_t dt_name_offset;	/* since v0.2, set by mksunxiboot */
-	uint32_t dram_size;		/* in MiB, since v0.3, set by SPL */
-	uint32_t boot_media;		/* written here by the boot ROM */
-	/* A padding area (may be used for storing text strings) */
-	uint32_t string_pool[13];	/* since v0.2, filled by mksunxiboot */
-	/* The header must be a multiple of 32 bytes (for VBAR alignment) */
-};
-
-/* Compile time check to assure proper alignment of structure */
-typedef char boot_file_head_not_multiple_of_32[1 - 2*(sizeof(struct boot_file_head) % 32)];
 
 #define is_boot0_magic(addr)	(memcmp((void *)addr, BOOT0_MAGIC, 8) == 0)
 
diff --git a/include/sunxi_image.h b/include/sunxi_image.h
new file mode 100644
index 00000000000..d0d1290eb72
--- /dev/null
+++ b/include/sunxi_image.h
@@ -0,0 +1,81 @@ 
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * (C) Copyright 2007-2011
+ * Allwinner Technology Co., Ltd. <www.allwinnertech.com>
+ * Tom Cubie <tangliang@allwinnertech.com>
+ *
+ * Constants and data structures used in Allwinner "eGON" images, as
+ * parsed by the Boot-ROM.
+ *
+ * Shared between mkimage and the SPL.
+ */
+#ifndef	SUNXI_IMAGE_H
+#define	SUNXI_IMAGE_H
+
+#define BOOT0_MAGIC		"eGON.BT0"
+#define SPL_SIGNATURE		"SPL" /* marks "sunxi" SPL header */
+#define SPL_MAJOR_BITS		3
+#define SPL_MINOR_BITS		5
+#define SPL_VERSION(maj, min)						\
+	((((maj) & ((1U << SPL_MAJOR_BITS) - 1)) << SPL_MINOR_BITS) | \
+	((min) & ((1U << SPL_MINOR_BITS) - 1)))
+
+#define SPL_HEADER_VERSION	SPL_VERSION(0, 2)
+
+#define SPL_ENV_HEADER_VERSION	SPL_VERSION(0, 1)
+#define SPL_DT_HEADER_VERSION	SPL_VERSION(0, 2)
+#define SPL_DRAM_HEADER_VERSION	SPL_VERSION(0, 3)
+
+/* boot head definition from sun4i boot code */
+struct boot_file_head {
+	uint32_t b_instruction;	/* one intruction jumping to real code */
+	uint8_t magic[8];	/* ="eGON.BT0" or "eGON.BT1", not C-style str */
+	uint32_t check_sum;	/* generated by PC */
+	uint32_t length;	/* generated by PC */
+	/*
+	 * We use a simplified header, only filling in what is needed
+	 * by the boot ROM. To be compatible with Allwinner tools we
+	 * would need to implement the proper fields here instead of
+	 * padding.
+	 *
+	 * Actually we want the ability to recognize our "sunxi" variant
+	 * of the SPL. To do so, let's place a special signature into the
+	 * "pub_head_size" field. We can reasonably expect Allwinner's
+	 * boot0 to always have the upper 16 bits of this set to 0 (after
+	 * all the value shouldn't be larger than the limit imposed by
+	 * SRAM size).
+	 * If the signature is present (at 0x14), then we know it's safe
+	 * to use the remaining 8 bytes (at 0x18) for our own purposes.
+	 * (E.g. sunxi-tools "fel" utility can pass information there.)
+	 */
+	union {
+		uint32_t pub_head_size;
+		uint8_t spl_signature[4];
+	};
+	uint32_t fel_script_address;	/* since v0.1, set by sunxi-fel */
+	/*
+	 * If the fel_uEnv_length member below is set to a non-zero value,
+	 * it specifies the size (byte count) of data at fel_script_address.
+	 * At the same time this indicates that the data is in uEnv.txt
+	 * compatible format, ready to be imported via "env import -t".
+	 */
+	uint32_t fel_uEnv_length;	/* since v0.1, set by sunxi-fel */
+	/*
+	 * Offset of an ASCIIZ string (relative to the SPL header), which
+	 * contains the default device tree name (CONFIG_DEFAULT_DEVICE_TREE).
+	 * This is optional and may be set to NULL. Is intended to be used
+	 * by flash programming tools for providing nice informative messages
+	 * to the users.
+	 */
+	uint32_t dt_name_offset;	/* since v0.2, set by mksunxiboot */
+	uint32_t dram_size;		/* in MiB, since v0.3, set by SPL */
+	uint32_t boot_media;		/* written here by the boot ROM */
+	/* A padding area (may be used for storing text strings) */
+	uint32_t string_pool[13];	/* since v0.2, filled by mksunxiboot */
+	/* The header must be a multiple of 32 bytes (for VBAR alignment) */
+};
+
+/* Compile time check to assure proper alignment of structure */
+typedef char boot_file_head_not_multiple_of_32[1 - 2*(sizeof(struct boot_file_head) % 32)];
+
+#endif