brain-hackers_pepepper-mirror/nkbin_maker
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Chiharu Shirasaka 2020-10-12 17:13:52 +09:00
parent 9e49a0152d
commit 0252289f9f
2 changed files with 141 additions and 142 deletions
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51
bsd-ce.c
View File

@ -1,28 +1,27 @@
#include <sys/types.h>
#include <fcntl.h> #include <fcntl.h>
#include <unistd.h> #include <stdint.h>
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
#include <stdint.h> #include <sys/types.h>
#include <unistd.h>
char* outfile = "nk.bin"; char *outfile = "nk.bin";
int verbose = 0; int verbose = 0;
FILE* fout = NULL; FILE *fout = NULL;
FILE* kfile = NULL; FILE *kfile = NULL;
FILE* lfile = NULL; FILE *lfile = NULL;
char* loader = NULL; char *loader = NULL;
unsigned int loader_size = 0; unsigned int loader_size = 0;
#define WRITE(arg,size) \ #define WRITE(arg, size) \
if(!fwrite(arg, size, 1, fout)) \ if (!fwrite(arg, size, 1, fout)) \
errx(1,"fwrite"); errx(1, "fwrite");
unsigned char magic[7] = "B000FF\n"; unsigned char magic[7] = "B000FF\n";
unsigned int start = 0xa0200000; unsigned int start = 0xa0200000;
unsigned int len = 0; unsigned int len = 0;
void void usage() {
usage(){
fprintf(stderr, "usage: bsd-ce [-h] [-o outfile] u-boot.bin\n"); fprintf(stderr, "usage: bsd-ce [-h] [-o outfile] u-boot.bin\n");
fprintf(stderr, "\n"); fprintf(stderr, "\n");
fprintf(stderr, " -h this help\n"); fprintf(stderr, " -h this help\n");
@ -30,14 +29,13 @@ usage(){
fprintf(stderr, " default: %s\n", outfile); fprintf(stderr, " default: %s\n", outfile);
} }
int int main(int argc, char *argv[]) {
main(int argc, char* argv[]){
int n, i; int n, i;
unsigned int i32, cksum, ch; unsigned int i32, cksum, ch;
long len; long len;
while((i = getopt(argc, argv, "hvo:l:")) != -1) { while ((i = getopt(argc, argv, "hvo:l:")) != -1) {
switch(i) { switch (i) {
case 'o': case 'o':
outfile = optarg; outfile = optarg;
break; break;
@ -47,21 +45,21 @@ main(int argc, char* argv[]){
return 1; return 1;
} }
} }
argc -= optind; argv += optind; argc -= optind;
argv += optind;
if (argc != 1) { if (argc != 1) {
fprintf(stderr, "missing kernel name\n"); fprintf(stderr, "missing kernel name\n");
usage(); usage();
return 1; return 1;
} }
/* load the loader (err...) */ /* load the loader (err...) */
if ((lfile = fopen(argv[0], "rb")) == NULL) if ((lfile = fopen(argv[0], "rb")) == NULL)
errx(1, "unable to open '%s'", argv[0]); errx(1, "unable to open '%s'", argv[0]);
fseek(lfile, 0, SEEK_END); fseek(lfile, 0, SEEK_END);
loader_size = ftell(lfile); loader_size = ftell(lfile);
fseek(lfile, 0, SEEK_SET); fseek(lfile, 0, SEEK_SET);
if ((loader = (char*)malloc(loader_size)) == NULL) if ((loader = (char *)malloc(loader_size)) == NULL)
errx(1, "can't allocate %u bytes for loader", loader_size); errx(1, "can't allocate %u bytes for loader", loader_size);
if (!fread(loader, loader_size, 1, lfile)) if (!fread(loader, loader_size, 1, lfile))
errx(1, "can't read loader file"); errx(1, "can't read loader file");
@ -79,11 +77,11 @@ main(int argc, char* argv[]){
WRITE(&start, sizeof(start)); WRITE(&start, sizeof(start));
WRITE(&loader_size, sizeof(loader_size)); WRITE(&loader_size, sizeof(loader_size));
/* Calculate the loader checksum */ /* Calculate the loader checksum */
cksum = 0; cksum = 0;
for (len = 0; len < loader_size; len++) { for (len = 0; len < loader_size; len++) {
ch = (unsigned char)loader[len]; cksum += ch; ch = (unsigned char)loader[len];
cksum += ch;
} }
i32 = start; i32 = start;
WRITE(&i32, sizeof(unsigned int)); WRITE(&i32, sizeof(unsigned int));
@ -103,9 +101,12 @@ main(int argc, char* argv[]){
* Write NK.BIN footer - this is just a series of 3x uint32_t indicating * Write NK.BIN footer - this is just a series of 3x uint32_t indicating
* a file of zero length, starting at our init code. * a file of zero length, starting at our init code.
*/ */
i32 = 0; WRITE(&i32, sizeof(i32)); i32 = 0;
i32 = start; WRITE(&i32, sizeof(i32)); WRITE(&i32, sizeof(i32));
i32 = 0; WRITE(&i32, sizeof(i32)); i32 = start;
WRITE(&i32, sizeof(i32));
i32 = 0;
WRITE(&i32, sizeof(i32));
free(loader); free(loader);
fclose(fout); fclose(fout);

20
nk-dump.c
View File

@ -1,26 +1,24 @@
#include <sys/types.h>
#include <fcntl.h> #include <fcntl.h>
#include <gelf.h> #include <gelf.h>
#include <unistd.h>
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
uint8_t magic[7] = "B000FF\n"; uint8_t magic[7] = "B000FF\n";
#define READ(buf,len) \ #define READ(buf, len) \
if (!fread(buf,len,1,f)) \ if (!fread(buf, len, 1, f)) \
err(1, "read error"); err(1, "read error");
int int main(int argc, char *argv[]) {
main(int argc, char* argv[]) FILE *f;
{
FILE* f;
uint8_t marker[7]; uint8_t marker[7];
uint32_t i32, addr, cksum, len, i; uint32_t i32, addr, cksum, len, i;
int n, ch, c; int n, ch, c;
if (argc != 2) { if (argc != 2) {
fprintf(stderr,"usage: nk-dump filename\n"); fprintf(stderr, "usage: nk-dump filename\n");
return 1; return 1;
} }
@ -43,7 +41,8 @@ main(int argc, char* argv[])
printf("image %u\n", n); printf("image %u\n", n);
c = 0; c = 0;
for (i = 0; i < len; i++) { for (i = 0; i < len; i++) {
ch = getc(f); c += ch; ch = getc(f);
c += ch;
} }
printf(" addr %08x\n", addr); printf(" addr %08x\n", addr);
printf(" len %08x\n", len); printf(" len %08x\n", len);
@ -55,7 +54,6 @@ main(int argc, char* argv[])
} }
n++; n++;
} }
fclose(f); fclose(f);