1 /* 2 * (C) Copyright 2014 3 * DENX Software Engineering 4 * Heiko Schocher <hs@denx.de> 5 * 6 * (C) Copyright 2008 Semihalf 7 * 8 * (C) Copyright 2000-2004 9 * DENX Software Engineering 10 * Wolfgang Denk, wd@denx.de 11 * 12 * Updated-by: Prafulla Wadaskar <prafulla@marvell.com> 13 * FIT image specific code abstracted from mkimage.c 14 * some functions added to address abstraction 15 * 16 * All rights reserved. 17 * 18 * SPDX-License-Identifier: GPL-2.0+ 19 */ 20 21 #include "imagetool.h" 22 #include "mkimage.h" 23 #include "fit_common.h" 24 #include <image.h> 25 #include <u-boot/crc.h> 26 27 int fit_verify_header(unsigned char *ptr, int image_size, 28 struct image_tool_params *params) 29 { 30 return fdt_check_header(ptr); 31 } 32 33 int fit_check_image_types(uint8_t type) 34 { 35 if (type == IH_TYPE_FLATDT) 36 return EXIT_SUCCESS; 37 else 38 return EXIT_FAILURE; 39 } 40 41 int mmap_fdt(const char *cmdname, const char *fname, size_t size_inc, 42 void **blobp, struct stat *sbuf, bool delete_on_error) 43 { 44 void *ptr; 45 int fd; 46 47 /* Load FIT blob into memory (we need to write hashes/signatures) */ 48 fd = open(fname, O_RDWR | O_BINARY); 49 50 if (fd < 0) { 51 fprintf(stderr, "%s: Can't open %s: %s\n", 52 cmdname, fname, strerror(errno)); 53 goto err; 54 } 55 56 if (fstat(fd, sbuf) < 0) { 57 fprintf(stderr, "%s: Can't stat %s: %s\n", 58 cmdname, fname, strerror(errno)); 59 goto err; 60 } 61 62 if (size_inc) { 63 sbuf->st_size += size_inc; 64 if (ftruncate(fd, sbuf->st_size)) { 65 fprintf(stderr, "%s: Can't expand %s: %s\n", 66 cmdname, fname, strerror(errno)); 67 goto err; 68 } 69 } 70 71 errno = 0; 72 ptr = mmap(0, sbuf->st_size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0); 73 if ((ptr == MAP_FAILED) || (errno != 0)) { 74 fprintf(stderr, "%s: Can't read %s: %s\n", 75 cmdname, fname, strerror(errno)); 76 goto err; 77 } 78 79 /* check if ptr has a valid blob */ 80 if (fdt_check_header(ptr)) { 81 fprintf(stderr, "%s: Invalid FIT blob\n", cmdname); 82 goto err; 83 } 84 85 /* expand if needed */ 86 if (size_inc) { 87 int ret; 88 89 ret = fdt_open_into(ptr, ptr, sbuf->st_size); 90 if (ret) { 91 fprintf(stderr, "%s: Cannot expand FDT: %s\n", 92 cmdname, fdt_strerror(ret)); 93 goto err; 94 } 95 } 96 97 *blobp = ptr; 98 return fd; 99 100 err: 101 if (fd >= 0) 102 close(fd); 103 if (delete_on_error) 104 unlink(fname); 105 106 return -1; 107 } 108