/* * Copyright (C) 2010 "Wu Zhangjin" <wuzhangjin@gmail.com> * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. */ #include <sys/types.h> #include <sys/stat.h> #include <errno.h> #include <stdint.h> #include <stdio.h> #include <stdlib.h> #include "../../../../include/linux/sizes.h" int main(int argc, char *argv[]) { unsigned long long vmlinux_size, vmlinux_load_addr, vmlinuz_load_addr; struct stat sb; if (argc != 3) { fprintf(stderr, "Usage: %s <pathname> <vmlinux_load_addr>\n", argv[0]); return EXIT_FAILURE; } if (stat(argv[1], &sb) == -1) { perror("stat"); return EXIT_FAILURE; } /* Convert hex characters to dec number */ errno = 0; if (sscanf(argv[2], "%llx", &vmlinux_load_addr) != 1) { if (errno != 0) perror("sscanf"); else fprintf(stderr, "No matching characters\n"); return EXIT_FAILURE; } vmlinux_size = (uint64_t)sb.st_size; vmlinuz_load_addr = vmlinux_load_addr + vmlinux_size; /* * Align with 64KB: KEXEC needs load sections to be aligned to PAGE_SIZE, * which may be as large as 64KB depending on the kernel configuration. */ vmlinuz_load_addr += (SZ_64K - vmlinux_size % SZ_64K); printf("0x%llx\n", vmlinuz_load_addr); return EXIT_SUCCESS; }