On Tue, Jan 17, 2006 at 03:28:44PM +0100, Janosch Machowinski wrote:
> >
> >Ok. Well maybe that little tool attached could give us the
> >information.
> >
> Nope, scotchmobil pmtools # ./a.out
> read: Bad address
Sometimes I'm stupid. Try this version instead.
--
Bruno Ducrot
-- Which is worse: ignorance or apathy?
-- Don't know. Don't care.
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
int main(void)
{
int fd;
off_t c;
unsigned char *p;
fd = open("/dev/mem", O_RDONLY);
if (fd < 0) {
perror("open /dev/mem");
exit(1);
}
/*
* SS1, 1, <- 0
* SS2, 1,
* SS3, 1,
* SS4, 1,
* Offset (0x01),
* IOST, 16, <- 1, 2
* SPIO, 16, <- 3, 4
* PMBS, 16, <- 5, 6
* PMLN, 8, <- 7
* SMBS, 16, <- 8, 9
* SMLN, 8, <- A
* IO1B, 16, <- B, C
* IO1L, 8, <- D
* IO2B, 16, <- E, F
* IO2L, 8,
* TOPM, 32,
* ROMS, 32,
*/
p = mmap(NULL, 1024, PROT_READ, MAP_SHARED, fd, 0x1FF50000);
if (p == MAP_FAILED) {
perror("mmap");
exit(1);
}
close(fd);
printf("0x%x\n", ((p[0x64 + 0xf] & 0xff) << 8) | (p[0x64 + 0xe] & 0xff));
munmap(p, 1024);
return 0;
}
