1 /* 2 * Image manipulator for LPC32XX SoCs 3 * 4 * (C) Copyright 2015 DENX Software Engineering GmbH 5 * Written-by: Albert ARIBAUD <albert.aribaud@3adev.fr> 6 * 7 * Derived from omapimage.c: 8 * 9 * (C) Copyright 2010 10 * Linaro LTD, www.linaro.org 11 * Author: John Rigby <john.rigby@linaro.org> 12 * Based on TI's signGP.c 13 * 14 * (C) Copyright 2009 15 * Stefano Babic, DENX Software Engineering, sbabic@denx.de. 16 * 17 * (C) Copyright 2008 18 * Marvell Semiconductor <www.marvell.com> 19 * Written-by: Prafulla Wadaskar <prafulla@marvell.com> 20 * 21 * SPDX-License-Identifier: GPL-2.0+ 22 */ 23 24 #include "imagetool.h" 25 #include <compiler.h> 26 #include <image.h> 27 28 /* 29 * NAND page 0 boot header 30 */ 31 32 struct nand_page_0_boot_header { 33 uint32_t data[129]; 34 uint32_t pad[383]; 35 }; 36 37 /* 38 * Default ICC (interface configuration data [sic]) if none specified 39 * in board config 40 */ 41 42 #ifndef LPC32XX_BOOT_ICR 43 #define LPC32XX_BOOT_ICR 0x00000096 44 #endif 45 46 /* 47 * Default boot NAND page size if none specified in board config 48 */ 49 50 #ifndef LPC32XX_BOOT_NAND_PAGESIZE 51 #define LPC32XX_BOOT_NAND_PAGESIZE 2048 52 #endif 53 54 /* 55 * Default boot NAND pages per sector if none specified in board config 56 */ 57 58 #ifndef LPC32XX_BOOT_NAND_PAGES_PER_SECTOR 59 #define LPC32XX_BOOT_NAND_PAGES_PER_SECTOR 64 60 #endif 61 62 /* 63 * Maximum size for boot code is 56K unless defined in board config 64 */ 65 66 #ifndef LPC32XX_BOOT_CODESIZE 67 #define LPC32XX_BOOT_CODESIZE (56*1024) 68 #endif 69 70 /* signature byte for a readable block */ 71 72 #define LPC32XX_BOOT_BLOCK_OK 0xaa 73 74 static struct nand_page_0_boot_header lpc32xximage_header; 75 76 static int lpc32xximage_check_image_types(uint8_t type) 77 { 78 if (type == IH_TYPE_LPC32XXIMAGE) 79 return EXIT_SUCCESS; 80 return EXIT_FAILURE; 81 } 82 83 static int lpc32xximage_verify_header(unsigned char *ptr, int image_size, 84 struct image_tool_params *params) 85 { 86 struct nand_page_0_boot_header *hdr = 87 (struct nand_page_0_boot_header *)ptr; 88 89 /* turn image size from bytes to NAND pages, page 0 included */ 90 int image_size_in_pages = ((image_size - 1) 91 / LPC32XX_BOOT_NAND_PAGESIZE); 92 93 if (hdr->data[0] != (0xff & LPC32XX_BOOT_ICR)) 94 return -1; 95 if (hdr->data[1] != (0xff & ~LPC32XX_BOOT_ICR)) 96 return -1; 97 if (hdr->data[2] != (0xff & LPC32XX_BOOT_ICR)) 98 return -1; 99 if (hdr->data[3] != (0xff & ~LPC32XX_BOOT_ICR)) 100 return -1; 101 if (hdr->data[4] != (0xff & image_size_in_pages)) 102 return -1; 103 if (hdr->data[5] != (0xff & ~image_size_in_pages)) 104 return -1; 105 if (hdr->data[6] != (0xff & image_size_in_pages)) 106 return -1; 107 if (hdr->data[7] != (0xff & ~image_size_in_pages)) 108 return -1; 109 if (hdr->data[8] != (0xff & image_size_in_pages)) 110 return -1; 111 if (hdr->data[9] != (0xff & ~image_size_in_pages)) 112 return -1; 113 if (hdr->data[10] != (0xff & image_size_in_pages)) 114 return -1; 115 if (hdr->data[11] != (0xff & ~image_size_in_pages)) 116 return -1; 117 if (hdr->data[12] != LPC32XX_BOOT_BLOCK_OK) 118 return -1; 119 if (hdr->data[128] != LPC32XX_BOOT_BLOCK_OK) 120 return -1; 121 return 0; 122 } 123 124 static void print_hdr_byte(struct nand_page_0_boot_header *hdr, int ofs) 125 { 126 printf("header[%d] = %02x\n", ofs, hdr->data[ofs]); 127 } 128 129 static void lpc32xximage_print_header(const void *ptr) 130 { 131 struct nand_page_0_boot_header *hdr = 132 (struct nand_page_0_boot_header *)ptr; 133 int ofs; 134 135 for (ofs = 0; ofs <= 12; ofs++) 136 print_hdr_byte(hdr, ofs); 137 print_hdr_byte(hdr, 128); 138 } 139 140 static void lpc32xximage_set_header(void *ptr, struct stat *sbuf, int ifd, 141 struct image_tool_params *params) 142 { 143 struct nand_page_0_boot_header *hdr = 144 (struct nand_page_0_boot_header *)ptr; 145 146 /* turn image size from bytes to NAND pages, page 0 included */ 147 int image_size_in_pages = ((sbuf->st_size 148 + LPC32XX_BOOT_NAND_PAGESIZE - 1) 149 / LPC32XX_BOOT_NAND_PAGESIZE); 150 151 /* fill header -- default byte value is 0x00, not 0xFF */ 152 memset((void *)hdr, 0, sizeof(*hdr)); 153 hdr->data[0] = (hdr->data[2] = 0xff & LPC32XX_BOOT_ICR); 154 hdr->data[1] = (hdr->data[3] = 0xff & ~LPC32XX_BOOT_ICR); 155 hdr->data[4] = (hdr->data[6] = (hdr->data[8] 156 = (hdr->data[10] = 0xff & image_size_in_pages))); 157 hdr->data[5] = (hdr->data[7] = (hdr->data[9] 158 = (hdr->data[11] = 0xff & ~image_size_in_pages))); 159 hdr->data[12] = (hdr->data[128] = LPC32XX_BOOT_BLOCK_OK); 160 } 161 162 /* 163 * lpc32xximage parameters 164 */ 165 U_BOOT_IMAGE_TYPE( 166 lpc32xximage, 167 "LPC32XX Boot Image", 168 sizeof(lpc32xximage_header), 169 (void *)&lpc32xximage_header, 170 NULL, 171 lpc32xximage_verify_header, 172 lpc32xximage_print_header, 173 lpc32xximage_set_header, 174 NULL, 175 lpc32xximage_check_image_types, 176 NULL, 177 NULL 178 ); 179