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