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/*
* 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 <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;
}
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