1 /***********************license start***************
2 * Copyright (c) 2008 Cavium Networks (support@cavium.com). All rights
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are
10 * * Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
13 * * Redistributions in binary form must reproduce the above
14 * copyright notice, this list of conditions and the following
15 * disclaimer in the documentation and/or other materials provided
16 * with the distribution.
18 * * Neither the name of Cavium Networks nor the names of
19 * its contributors may be used to endorse or promote products
20 * derived from this software without specific prior written
23 * TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
24 * AND WITH ALL FAULTS AND CAVIUM NETWORKS MAKES NO PROMISES, REPRESENTATIONS
25 * OR WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH
26 * RESPECT TO THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY
27 * REPRESENTATION OR DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT
28 * DEFECTS, AND CAVIUM SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES
29 * OF TITLE, MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR
30 * PURPOSE, LACK OF VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET
31 * POSSESSION OR CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT
32 * OF USE OR PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
35 * For any questions regarding licensing please contact marketing@caviumnetworks.com
37 ***********************license end**************************************/
41 #ifndef __CVMX_BOOTLOADER__
42 #define __CVMX_BOOTLOADER__
49 * Bootloader definitions that are shared with other programs
51 * <hr>$Revision: 41586 $<hr>
55 /* The bootloader_header_t structure defines the header that is present
56 ** at the start of binary u-boot images. This header is used to locate the bootloader
57 ** image in NAND, and also to allow verification of images for normal NOR booting.
58 ** This structure is placed at the beginning of a bootloader binary image, and remains
59 ** in the executable code.
61 #define BOOTLOADER_HEADER_MAGIC 0x424f4f54 /* "BOOT" in ASCII */
63 #define BOOTLOADER_HEADER_COMMENT_LEN 64
64 #define BOOTLOADER_HEADER_VERSION_LEN 64
65 #define BOOTLOADER_HEADER_MAX_SIZE 0x200 /* limited by the space to the next exception handler */
67 #define BOOTLOADER_HEADER_CURRENT_MAJOR_REV 1
68 #define BOOTLOADER_HEADER_CURRENT_MINOR_REV 1
70 /* offsets to struct bootloader_header fields for assembly use */
78 #define LOOKUP_STEP 8192
81 typedef struct bootloader_header
83 uint32_t jump_instr; /* Jump to executable code following the
84 ** header. This allows this header to
85 ** be (and remain) part of the executable image)
87 uint32_t nop_instr; /* Must be 0x0 */
88 uint32_t magic; /* Magic number to identify header */
89 uint32_t hcrc; /* CRC of all of header excluding this field */
91 uint16_t hlen; /* Length of header in bytes */
92 uint16_t maj_rev; /* Major revision */
93 uint16_t min_rev; /* Minor revision */
94 uint16_t board_type; /* Board type that the image is for */
96 uint32_t dlen; /* Length of data (immediately following header) in bytes */
97 uint32_t dcrc; /* CRC of data */
98 uint64_t address; /* Mips virtual address */
100 uint16_t image_type; /* Defined in bootloader_image_t enum */
101 uint16_t resv0; /* pad */
103 /* The next 4 fields are placed in compile-time, not by the utility */
104 uint32_t got_address; /* compiled got address position in the image */
105 uint32_t got_num_entries; /* number of got entries */
106 uint32_t compiled_start; /* compaled start of the image address */
107 uint32_t image_start; /* relocated start of image address */
109 char comment_string[BOOTLOADER_HEADER_COMMENT_LEN]; /* Optional, for descriptive purposes */
110 char version_string[BOOTLOADER_HEADER_VERSION_LEN]; /* Optional, for descriptive purposes */
111 } __attribute__((packed)) bootloader_header_t;
115 /* Defines for flag field */
116 #define BL_HEADER_FLAG_FAILSAFE (1)
121 BL_HEADER_IMAGE_UKNOWN = 0x0,
122 BL_HEADER_IMAGE_STAGE2, /* Binary bootloader stage2 image (NAND boot) */
123 BL_HEADER_IMAGE_STAGE3, /* Binary bootloader stage3 image (NAND boot)*/
124 BL_HEADER_IMAGE_NOR, /* Binary bootloader for NOR boot */
125 BL_HEADER_IMAGE_PCIBOOT, /* Binary bootloader for PCI boot */
126 BL_HEADER_IMAGE_UBOOT_ENV, /* Environment for u-boot */
128 /* Range for customer private use. Will not be used by Cavium Networks */
129 BL_HEADER_IMAGE_CUST_RESERVED_MIN = 0x1000,
130 BL_HEADER_IMAGE_CUST_RESERVED_MAX = 0x1fff,
131 } bootloader_image_t;
133 #endif /* __ASSEMBLY__ */
135 /* Maximum address searched for NAND boot images and environments. This is used
136 ** by stage1 and stage2. */
137 #define MAX_NAND_SEARCH_ADDR 0x400000
140 /* Defines for RAM based environment set by the host or the previous bootloader
141 ** in a chain boot configuration. */
143 #define U_BOOT_RAM_ENV_ADDR (0x1000)
144 #define U_BOOT_RAM_ENV_SIZE (0x1000)
145 #define U_BOOT_RAM_ENV_CRC_SIZE (0x4)
147 #endif /* __CVMX_BOOTLOADER__ */