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allow to set manually blocks to load for second

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This commit is contained in:
Laurent Vivier 2006-09-12 00:58:31 +00:00
parent 5596502a8d
commit 916b8de203
1 changed files with 72 additions and 9 deletions
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81
tools/emile-first-tune.c
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@ -13,8 +13,11 @@
#include <string.h>
#include <getopt.h>
#include "emile.h"
#include "libemile.h"
#define BLOCK_SIZE 512
enum {
ARG_NONE = 0,
ARG_HELP ='h',
@ -22,6 +25,7 @@ enum {
ARG_OFFSET ='o',
ARG_SIZE = 's',
ARG_PATH = 'p',
ARG_SCSI = 'i',
};
static struct option long_options[] =
@ -31,17 +35,19 @@ static struct option long_options[] =
{"offset", 1, NULL, ARG_OFFSET },
{"size", 1, NULL, ARG_SIZE },
{"path", 1, NULL, ARG_PATH },
{"scsi", 0, NULL, ARG_SCSI },
{NULL, 0, NULL, 0 },
};
static void usage(int argc, char** argv)
{
fprintf(stderr, "Usage: %s [-d <drive>][-o <offset>][-s <size>] <image>\n", argv[0]);
fprintf(stderr, "Usage: %s [-p <path>] <image>\n", argv[0]);
fprintf(stderr, "Set EMILE first level boot block info (floppy):\n");
fprintf(stderr, "Usage: %s [-i][-d <drive>][-o <offset>][-s <size>] <image>\n", argv[0]);
fprintf(stderr, "Usage: %s [-p <path>|-b <id> <start> <length>] <image>\n", argv[0]);
fprintf(stderr, "Set EMILE first level boot block info (floppy or scsi):\n");
fprintf(stderr, " -d, --drive <drive> set the drive number (default 1)\n");
fprintf(stderr, " -o, --offset <offset> set offset of second level in bytes\n");
fprintf(stderr, " -s, --size <size> set size of second level in bytes\n");
fprintf(stderr, " -i, --scsi specify scsi first level format (offset is a block number)\n");
fprintf(stderr, "Set EMILE first level boot block info (scsi):\n");
fprintf(stderr, " -p, --path <path> set path of second level\n");
fprintf(stderr, "Display current values if no flags provided\n");
@ -83,7 +89,7 @@ int first_tune( char* image, unsigned short tune_mask, int drive_num,
return 0;
}
int first_tune_scsi( char* image, char *second_path)
int first_tune_path( char* image, char *second_path)
{
int fd;
int ret;
@ -101,6 +107,56 @@ int first_tune_scsi( char* image, char *second_path)
return ret;
}
int first_tune_scsi( char* image, int drive_num, int second_offset, int size)
{
int fd;
int ret;
char first[1024];
int current;
unsigned short max_blocks;
fd = open(image, O_RDWR);
if (fd == -1)
{
perror("Cannot open image file");
return 2;
}
ret = read(fd, first, 1024);
if (ret == -1)
return EEMILE_CANNOT_READ_FIRST;
max_blocks = read_short((u_int16_t*)&first[1022]) / 6;
write_short((u_int16_t*)&first[1014], BLOCK_SIZE);
write_short((u_int16_t*)&first[1016], drive_num);
write_long((u_int32_t*)&first[1018], 0);
current = 1014;
current -= 2;
write_short((u_int16_t*)&first[current], (size + BLOCK_SIZE - 1) / BLOCK_SIZE);
current -= 4;
write_long((u_int32_t*)&first[current], second_offset);
/* mark end of blocks list */
current -= 2;
write_short((u_int16_t*)(&first[current]), 0);
/* set second level size */
write_long((u_int32_t*)&first[1018], (size + BLOCK_SIZE - 1) / BLOCK_SIZE * BLOCK_SIZE);
ret = lseek(fd, 0, SEEK_SET);
if (ret != 0)
return EEMILE_CANNOT_WRITE_FIRST;
ret = write(fd, first, 1024);
if (ret == -1)
return EEMILE_CANNOT_WRITE_FIRST;
close(fd);
return 0;
}
int main(int argc, char** argv)
{
int ret;
@ -110,10 +166,11 @@ int main(int argc, char** argv)
char* path = NULL;
unsigned short tune_mask = 0;
int drive_num, second_offset, second_size;
int use_scsi = 0;
while(1)
{
c = getopt_long(argc, argv, "hd:o:f:p:", long_options,
c = getopt_long(argc, argv, "hd:o:s:p:i", long_options,
&option_index);
if (c == EOF)
break;
@ -130,16 +187,17 @@ int main(int argc, char** argv)
case ARG_OFFSET:
tune_mask |= EMILE_FIRST_TUNE_OFFSET;
second_offset = atoi(optarg);
second_offset = (second_offset + 0x1FF) & 0xFFFFFE00;
break;
case ARG_SIZE:
tune_mask |= EMILE_FIRST_TUNE_SIZE;
second_size = atoi(optarg);
second_size = (second_size + 0x1FF) & 0xFFFFFE00;
break;
case ARG_PATH:
path = optarg;
break;
case ARG_SCSI:
use_scsi = 1;
break;
}
}
@ -161,9 +219,14 @@ int main(int argc, char** argv)
}
if (path)
ret = first_tune_scsi( image, path);
else
ret = first_tune_path( image, path);
else if (use_scsi)
ret = first_tune_scsi( image, drive_num, second_offset, second_size);
else {
second_offset = (second_offset + 0x1FF) & 0xFFFFFE00;
second_size = (second_size + 0x1FF) & 0xFFFFFE00;
ret = first_tune( image, tune_mask, drive_num, second_offset, second_size);
}
switch(ret)
{
case 0: