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tools/fit_common.c
2.31 KB
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// SPDX-License-Identifier: GPL-2.0+ |
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/* * (C) Copyright 2014 * DENX Software Engineering * Heiko Schocher <hs@denx.de> * * (C) Copyright 2008 Semihalf * * (C) Copyright 2000-2004 * DENX Software Engineering * Wolfgang Denk, wd@denx.de * * Updated-by: Prafulla Wadaskar <prafulla@marvell.com> * FIT image specific code abstracted from mkimage.c * some functions added to address abstraction * * All rights reserved. |
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*/ #include "imagetool.h" #include "mkimage.h" #include "fit_common.h" #include <image.h> #include <u-boot/crc.h> int fit_verify_header(unsigned char *ptr, int image_size, struct image_tool_params *params) { |
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if (fdt_check_header(ptr) != EXIT_SUCCESS || !fit_check_format(ptr)) return EXIT_FAILURE; return EXIT_SUCCESS; |
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} int fit_check_image_types(uint8_t type) { if (type == IH_TYPE_FLATDT) return EXIT_SUCCESS; else return EXIT_FAILURE; } |
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int mmap_fdt(const char *cmdname, const char *fname, size_t size_inc, |
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void **blobp, struct stat *sbuf, bool delete_on_error, bool read_only) |
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{ void *ptr; int fd; /* Load FIT blob into memory (we need to write hashes/signatures) */ |
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fd = open(fname, (read_only ? O_RDONLY : O_RDWR) | O_BINARY); |
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if (fd < 0) { fprintf(stderr, "%s: Can't open %s: %s ", cmdname, fname, strerror(errno)); |
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goto err; |
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} if (fstat(fd, sbuf) < 0) { fprintf(stderr, "%s: Can't stat %s: %s ", cmdname, fname, strerror(errno)); |
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goto err; |
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} |
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if (size_inc) { sbuf->st_size += size_inc; if (ftruncate(fd, sbuf->st_size)) { fprintf(stderr, "%s: Can't expand %s: %s ", cmdname, fname, strerror(errno)); goto err; } } |
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errno = 0; |
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ptr = mmap(0, sbuf->st_size, (read_only ? PROT_READ : PROT_READ | PROT_WRITE), MAP_SHARED, fd, 0); |
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if ((ptr == MAP_FAILED) || (errno != 0)) { fprintf(stderr, "%s: Can't read %s: %s ", cmdname, fname, strerror(errno)); |
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goto err; |
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} /* check if ptr has a valid blob */ if (fdt_check_header(ptr)) { fprintf(stderr, "%s: Invalid FIT blob ", cmdname); |
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goto err; |
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} |
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/* expand if needed */ if (size_inc) { int ret; ret = fdt_open_into(ptr, ptr, sbuf->st_size); if (ret) { fprintf(stderr, "%s: Cannot expand FDT: %s ", cmdname, fdt_strerror(ret)); goto err; } } |
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*blobp = ptr; return fd; |
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err: if (fd >= 0) close(fd); if (delete_on_error) unlink(fname); return -1; |
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} |