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Check boot signature and flush caches

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This commit is contained in:
Laurent Vivier 2007-11-05 21:21:02 +00:00
parent 6bd242d7ce
commit bef869a741
1 changed files with 26 additions and 3 deletions
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29
second/load.c
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@ -4,6 +4,7 @@
*
*/
extern void list_unit(void);
#define __NO_INLINE__
#include <stdio.h>
@ -14,6 +15,8 @@
#include <macos/types.h>
#include <macos/devices.h>
#include <macos/lowmem.h>
#include <macos/osutils.h>
#include <libui.h>
#include <libstream.h>
@ -22,6 +25,7 @@
#include "misc.h"
#include "load.h"
#include "driver.h"
#define PAGE_SHIFT 12
#define PAGE_SIZE (1UL << PAGE_SHIFT)
@ -267,8 +271,9 @@ char* load_chainloader(char *path)
{
stream_t *stream;
struct stream_stat stat;
char *loader;
char *memory, *loader;
int ret;
int unit;
stream = stream_open(path);
if (stream == NULL)
@ -277,8 +282,10 @@ char* load_chainloader(char *path)
return NULL;
}
stream_fstat(stream, &stat);
loader = (char*)malloc(stat.st_size + 4);
loader = (char*)(((unsigned long)loader + 3) & 0xFFFFFFFC);
unit = stat.st_dev;
memory = (char*)malloc(stat.st_size + 4);
loader = (char*)(((unsigned long)memory + 3) & 0xFFFFFFFC);
ret = stream_read(stream, loader, stat.st_size);
@ -291,5 +298,21 @@ char* load_chainloader(char *path)
return NULL;
}
unit = refnum_to_drive(scsi_id_to_refnum(unit));
LMSetBootDrive(unit);
if (loader[0] != 'L' || loader[1] != 'K')
{
printf("Error: not a boot sector\n");
free(memory);
return NULL;
}
FlushDataCache();
FlushInstructionCache();
FlushExtCache();
loader += 2;
return loader;
}