diff options
Diffstat (limited to 'kexec_tools/kexecload.c')
| -rw-r--r-- | kexec_tools/kexecload.c | 90 |
1 files changed, 49 insertions, 41 deletions
diff --git a/kexec_tools/kexecload.c b/kexec_tools/kexecload.c index cef01475..71365435 100644 --- a/kexec_tools/kexecload.c +++ b/kexec_tools/kexecload.c @@ -1,10 +1,10 @@ #include <errno.h> -#include <fcntl.h> #include <getopt.h> -#include <stdio.h> +#include <fcntl.h> +#include <sys/mman.h> #include <stdlib.h> +#include <stdio.h> #include <string.h> -#include <sys/mman.h> #include <sys/stat.h> #include <sys/syscall.h> #include <sys/types.h> @@ -14,19 +14,20 @@ #include "kexec.h" // Offsets same as in kernel asm/kexec.h -#define KEXEC_ARM_ATAGS_OFFSET 0x1000 +#define KEXEC_ARM_ATAGS_OFFSET 0x1000 #define KEXEC_ARM_ZIMAGE_OFFSET 0x8000 #define MEMORY_SIZE 0x0800000 // Physical buffer address cannot overlap with other regions #define START_ADDRESS 0x44000000 -#define ROUND_TO_PAGE(address, pagesize) (((address) + (pagesize)-1) & (~((pagesize)-1))) +#define ROUND_TO_PAGE(address,pagesize) (((address) + (pagesize) - 1) & (~((pagesize) - 1))) /* * Gives file position and resets current position to begining of file */ -int get_file_size(int f) { +int get_file_size(int f) +{ struct stat st; fstat(f, &st); return st.st_size; @@ -47,33 +48,40 @@ int test_kexeccall() { return 0; } -void usage(void) { +void usage(void) +{ fprintf(stderr, "usage: kexecload [ <option> ] <atags path> <kernel path>\n" "\n" "options:\n" " -t tests syscall\n" - " -s <start address> specify start address of kernel\n"); + " -s <start address> specify start address of kernel\n" + ); } /* * Loads kexec into the kernel and sets kexec on crash */ -int main(int argc, char* argv[]) { +int main(int argc, char *argv[]) +{ int rv; - int atag_file, zimage_file; - int atag_size, zimage_size; - void* atag_buffer; - void* zimage_buffer; + int atag_file, + zimage_file; + int atag_size, + zimage_size; + void *atag_buffer; + void *zimage_buffer; struct kexec_segment segment[2]; int page_size = getpagesize(); - void* start_address = (void*)START_ADDRESS; + void *start_address = (void *)START_ADDRESS; int c; - const struct option longopts[] = {{"start_address", required_argument, 0, 's'}, - {"test", 0, 0, 't'}, - {"help", 0, 0, 'h'}, - {0, 0, 0, 0}}; + const struct option longopts[] = { + {"start_address", required_argument, 0, 's'}, + {"test", 0, 0, 't'}, + {"help", 0, 0, 'h'}, + {0, 0, 0, 0} + }; while (1) { c = getopt_long(argc, argv, "s:th", longopts, NULL); @@ -82,19 +90,19 @@ int main(int argc, char* argv[]) { } /* Alphabetical cases */ switch (c) { - case 's': - start_address = (void*)strtoul(optarg, 0, 16); - break; - case 'h': - usage(); - return 1; - case 't': - test_kexeccall(); - return 1; - case '?': - return 1; - default: - abort(); + case 's': + start_address = (void *) strtoul(optarg, 0, 16); + break; + case 'h': + usage(); + return 1; + case 't': + test_kexeccall(); + return 1; + case '?': + return 1; + default: + abort(); } } @@ -110,8 +118,7 @@ int main(int argc, char* argv[]) { zimage_file = open(argv[1], O_RDONLY); if (atag_file < 0 || zimage_file < 0) { - fprintf(stderr, "Error during opening of atag file or the zImage file %s\n", - strerror(errno)); + fprintf(stderr, "Error during opening of atag file or the zImage file %s\n", strerror(errno)); return 1; } @@ -123,27 +130,26 @@ int main(int argc, char* argv[]) { return 1; } - atag_buffer = (char*)mmap(NULL, atag_size, PROT_READ, MAP_POPULATE | MAP_PRIVATE, atag_file, 0); - zimage_buffer = - (char*)mmap(NULL, zimage_size, PROT_READ, MAP_POPULATE | MAP_PRIVATE, zimage_file, 0); + atag_buffer = (char *) mmap(NULL, atag_size, PROT_READ, MAP_POPULATE | MAP_PRIVATE, atag_file, 0); + zimage_buffer = (char *) mmap(NULL, zimage_size, PROT_READ, MAP_POPULATE | MAP_PRIVATE, zimage_file, 0); - if (atag_buffer == MAP_FAILED || zimage_buffer == MAP_FAILED) { + if(atag_buffer == MAP_FAILED || zimage_buffer == MAP_FAILED) { fprintf(stderr, "Unable to map files into memory"); return 1; } segment[0].buf = zimage_buffer; segment[0].bufsz = zimage_size; - segment[0].mem = (void*)((uintptr_t)start_address + KEXEC_ARM_ZIMAGE_OFFSET); + segment[0].mem = (void *) ((uintptr_t) start_address + KEXEC_ARM_ZIMAGE_OFFSET); segment[0].memsz = zimage_size; segment[1].buf = atag_buffer; segment[1].bufsz = atag_size; - segment[1].mem = (void*)((uintptr_t)start_address + KEXEC_ARM_ATAGS_OFFSET); + segment[1].mem = (void *) ((uintptr_t) start_address + KEXEC_ARM_ATAGS_OFFSET); segment[1].memsz = atag_size; - rv = kexec_load(((uintptr_t)start_address + KEXEC_ARM_ZIMAGE_OFFSET), 2, (void*)segment, - KEXEC_ARCH_DEFAULT | KEXEC_ON_CRASH); + rv = kexec_load(((uintptr_t) start_address + KEXEC_ARM_ZIMAGE_OFFSET), + 2, (void *) segment, KEXEC_ARCH_DEFAULT | KEXEC_ON_CRASH); if (rv != 0) { fprintf(stderr, "Kexec_load returned non-zero exit code: %d with errno %d\n", rv, errno); @@ -154,4 +160,6 @@ int main(int argc, char* argv[]) { printf("New kernel should start at 0x%08x\n", START_ADDRESS + KEXEC_ARM_ZIMAGE_OFFSET); return 0; + } + |