/***********************license start***************
* Copyright (c) 2003-2010 Cavium Inc. (support@cavium.com). All rights
* reserved.
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***********************license end**************************************/
#ifndef __CVMX_BOOTLOADER__
#define __CVMX_BOOTLOADER__
/**
* @file
*
* Bootloader definitions that are shared with other programs
*
* <hr>$Revision: 70030 $<hr>
*/
/* The bootloader_header_t structure defines the header that is present
** at the start of binary u-boot images. This header is used to locate the bootloader
** image in NAND, and also to allow verification of images for normal NOR booting.
** This structure is placed at the beginning of a bootloader binary image, and remains
** in the executable code.
*/
#define BOOTLOADER_HEADER_MAGIC 0x424f4f54 /* "BOOT" in ASCII */
#define BOOTLOADER_HEADER_COMMENT_LEN 64
#define BOOTLOADER_HEADER_VERSION_LEN 64
#define BOOTLOADER_HEADER_MAX_SIZE 0x200 /* limited by the space to the next exception handler */
#define BOOTLOADER_HEADER_CURRENT_MAJOR_REV 1
#define BOOTLOADER_HEADER_CURRENT_MINOR_REV 2
/* Revision history
* 1.1 Initial released revision. (SDK 1.9)
* 1.2 TLB based relocatable image (SDK 2.0)
*
*
*/
/* offsets to struct bootloader_header fields for assembly use */
#define GOT_ADDRESS_OFFSET 48
#define LOOKUP_STEP (64*1024)
#ifndef __ASSEMBLY__
typedef struct bootloader_header
{
uint32_t jump_instr; /* Jump to executable code following the
** header. This allows this header to
** be (and remain) part of the executable image)
*/
uint32_t nop_instr; /* Must be 0x0 */
uint32_t magic; /* Magic number to identify header */
uint32_t hcrc; /* CRC of all of header excluding this field */
uint16_t hlen; /* Length of header in bytes */
uint16_t maj_rev; /* Major revision */
uint16_t min_rev; /* Minor revision */
uint16_t board_type; /* Board type that the image is for */
uint32_t dlen; /* Length of data (immediately following header) in bytes */
uint32_t dcrc; /* CRC of data */
uint64_t address; /* Mips virtual address */
uint32_t flags;
uint16_t image_type; /* Defined in bootloader_image_t enum */
uint16_t resv0; /* pad */
uint32_t reserved1;
uint32_t reserved2;
uint32_t reserved3;
uint32_t reserved4;
char comment_string[BOOTLOADER_HEADER_COMMENT_LEN]; /* Optional, for descriptive purposes */
char version_string[BOOTLOADER_HEADER_VERSION_LEN]; /* Optional, for descriptive purposes */
} __attribute__((packed)) bootloader_header_t;
/* Defines for flag field */
#define BL_HEADER_FLAG_FAILSAFE (1)
typedef enum
{
BL_HEADER_IMAGE_UNKNOWN = 0x0,
BL_HEADER_IMAGE_STAGE2, /* Binary bootloader stage2 image (NAND boot) */
BL_HEADER_IMAGE_STAGE3, /* Binary bootloader stage3 image (NAND boot)*/
BL_HEADER_IMAGE_NOR, /* Binary bootloader for NOR boot */
BL_HEADER_IMAGE_PCIBOOT, /* Binary bootloader for PCI boot */
BL_HEADER_IMAGE_UBOOT_ENV, /* Environment for u-boot */
BL_HEADER_IMAGE_MAX,
/* Range for customer private use. Will not be used by Cavium Inc. */
BL_HEADER_IMAGE_CUST_RESERVED_MIN = 0x1000,
BL_HEADER_IMAGE_CUST_RESERVED_MAX = 0x1fff
} bootloader_image_t;
#endif /* __ASSEMBLY__ */
/* Maximum address searched for NAND boot images and environments. This is used
** by stage1 and stage2. */
#define MAX_NAND_SEARCH_ADDR 0x400000
/* Maximum address to look for start of normal bootloader */
#define MAX_NOR_SEARCH_ADDR 0x200000
/* Defines for RAM based environment set by the host or the previous bootloader
** in a chain boot configuration. */
#define U_BOOT_RAM_ENV_ADDR (0x1000)
#define U_BOOT_RAM_ENV_SIZE (0x1000)
#define U_BOOT_RAM_ENV_CRC_SIZE (0x4)
#define U_BOOT_RAM_ENV_ADDR_2 (U_BOOT_RAM_ENV_ADDR + U_BOOT_RAM_ENV_SIZE)
#endif /* __CVMX_BOOTLOADER__ */