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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __LINUX_BCM963XX_TAG_H__
#define __LINUX_BCM963XX_TAG_H__
#include <linux/types.h>
#define TAGVER_LEN 4 /* Length of Tag Version */
#define TAGLAYOUT_LEN 4 /* Length of FlashLayoutVer */
#define SIG1_LEN 20 /* Company Signature 1 Length */
#define SIG2_LEN 14 /* Company Signature 2 Length */
#define BOARDID_LEN 16 /* Length of BoardId */
#define ENDIANFLAG_LEN 2 /* Endian Flag Length */
#define CHIPID_LEN 6 /* Chip Id Length */
#define IMAGE_LEN 10 /* Length of Length Field */
#define ADDRESS_LEN 12 /* Length of Address field */
#define IMAGE_SEQUENCE_LEN 4 /* Image sequence Length */
#define RSASIG_LEN 20 /* Length of RSA Signature in tag */
#define TAGINFO1_LEN 30 /* Length of vendor information field1 in tag */
#define FLASHLAYOUTVER_LEN 4 /* Length of Flash Layout Version String tag */
#define TAGINFO2_LEN 16 /* Length of vendor information field2 in tag */
#define ALTTAGINFO_LEN 54 /* Alternate length for vendor information; Pirelli */
#define NUM_PIRELLI 2
#define IMAGETAG_CRC_START 0xFFFFFFFF
#define PIRELLI_BOARDS { \
"AGPF-S0", \
"DWV-S0", \
}
/* Extended flash address, needs to be subtracted
* from bcm_tag flash image offsets.
*/
#define BCM963XX_EXTENDED_SIZE 0xBFC00000
/*
* The broadcom firmware assumes the rootfs starts the image,
* therefore uses the rootfs start (flash_image_address)
* to determine where to flash the image. Since we have the kernel first
* we have to give it the kernel address, but the crc uses the length
* associated with this address (root_length), which is added to the kernel
* length (kernel_length) to determine the length of image to flash and thus
* needs to be rootfs + deadcode (jffs2 EOF marker)
*/
struct bcm_tag {
/* 0-3: Version of the image tag */
char tag_version[TAGVER_LEN];
/* 4-23: Company Line 1 */
char sig_1[SIG1_LEN];
/* 24-37: Company Line 2 */
char sig_2[SIG2_LEN];
/* 38-43: Chip this image is for */
char chip_id[CHIPID_LEN];
/* 44-59: Board name */
char board_id[BOARDID_LEN];
/* 60-61: Map endianness -- 1 BE 0 LE */
char big_endian[ENDIANFLAG_LEN];
/* 62-71: Total length of image */
char total_length[IMAGE_LEN];
/* 72-83: Address in memory of CFE */
char cfe__address[ADDRESS_LEN];
/* 84-93: Size of CFE */
char cfe_length[IMAGE_LEN];
/* 94-105: Address in memory of image start
* (kernel for OpenWRT, rootfs for stock firmware)
*/
char flash_image_start[ADDRESS_LEN];
/* 106-115: Size of rootfs */
char root_length[IMAGE_LEN];
/* 116-127: Address in memory of kernel */
char kernel_address[ADDRESS_LEN];
/* 128-137: Size of kernel */
char kernel_length[IMAGE_LEN];
/* 138-141: Image sequence number
* (to be incremented when flashed with a new image)
*/
char image_sequence[IMAGE_SEQUENCE_LEN];
/* 142-161: RSA Signature (not used; some vendors may use this) */
char rsa_signature[RSASIG_LEN];
/* 162-191: Compilation and related information (not used in OpenWrt) */
char information1[TAGINFO1_LEN];
/* 192-195: Version flash layout */
char flash_layout_ver[FLASHLAYOUTVER_LEN];
/* 196-199: kernel+rootfs CRC32 */
__u32 fskernel_crc;
/* 200-215: Unused except on Alice Gate where it is information */
char information2[TAGINFO2_LEN];
/* 216-219: CRC32 of image less imagetag (kernel for Alice Gate) */
__u32 image_crc;
/* 220-223: CRC32 of rootfs partition */
__u32 rootfs_crc;
/* 224-227: CRC32 of kernel partition */
__u32 kernel_crc;
/* 228-235: Unused at present */
char reserved1[8];
/* 236-239: CRC32 of header excluding last 20 bytes */
__u32 header_crc;
/* 240-255: Unused at present */
char reserved2[16];
};
#endif /* __LINUX_BCM63XX_TAG_H__ */
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