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Check the uploaded ARM binary prior to executing.

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dhewg 2009-04-17 18:22:04 +02:00 committed by bushing
parent a922a7c0f2
commit 50c4b6f441
3 changed files with 21 additions and 9 deletions
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8
boot2.c
View File

@ -22,6 +22,7 @@ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "types.h"
#include "elf.h"
#include "nand.h"
#include "memory.h"
#include "crypto.h"
@ -49,13 +50,6 @@ typedef struct {
u32 padding[3];
} boot2header;
typedef struct {
u32 hdrsize;
u32 loadersize;
u32 elfsize;
u32 argument;
} ioshdr;
typedef struct {
u64 signature;
u32 generation;

7
elf.h
View File

@ -62,5 +62,12 @@ typedef struct {
#define PT_SHLIB 5
#define PT_PHDR 6
typedef struct {
u32 hdrsize;
u32 loadersize;
u32 elfsize;
u32 argument;
} ioshdr;
#endif

15
gecko.c
View File

@ -29,6 +29,7 @@ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#include "string.h"
#include "utils.h"
#include "hollywood.h"
#include "elf.h"
#include "powerpc.h"
#include "powerpc_elf.h"
#include "gecko.h"
@ -343,11 +344,21 @@ void gecko_timer(void) {
return;
}
ioshdr *h;
// done receiving, handle the command
switch (_gecko_cmd) {
case GECKO_CMD_BIN_ARM:
// skip headerlen, which is stored at u32[0]
ipc_enqueue_slow(IPC_DEV_SYS, IPC_SYS_JUMP, 1, ((u32 *) 0x0)[0]);
h = (ioshdr *) (u32 *) 0x0;
if (h->hdrsize != sizeof (ioshdr))
goto cleanup;
if (memcmp("\x7F" "ELF\x01\x02\x01",
(void *) (h->hdrsize + h->loadersize), 7))
goto cleanup;
ipc_enqueue_slow(IPC_DEV_SYS, IPC_SYS_JUMP, 1, h->hdrsize);
break;
case GECKO_CMD_BIN_PPC: