Just received my 7260 with Dev USB Drive w/ Debian
Booted TS-Linux OK
/usr/bin/loadUSBModules.sh
/usr/bin/loadUSB.sh
Booted Debian on USB drive OK
vim'd testlight.c as root (see below)
failed on the return to mmap after success on open /dev/mem
strerror set to No Such Device, and file descriptor was 0 ???
expected > 2
I'm new to Linux and probably missed something simple.
(mknod ???, gcc -???, someother ???.sh, chmod ???)
mmap is byte aligned to the correct 7260 address.
Details are below, code, ps, perms on /dev:(Thanks in advance)
ts7200:~# whoami
root
ts7200:~# cd /usr/rich
ts7200:/usr/rich# cat testlight.c
#include<stdio.h>
#include<unistd.h>
#include<errno.h>
#include<sys/types.h>
#include<sys/mman.h>
#include<sys/time.h>
#include<fcntl.h>
#include<string.h>
#define BASE_ADDRESS 0x80840000
#define DIAG_LED_OFFSET 0x020
extern int errno;
int main(int argc, char **argv) {
int fd;
unsigned char *start;
volatile unsigned int *dat;
int i, psize;
if((fd = open("/dev/mem", O_RDWR | O_SYNC) == -1)) {
printf("Cannot open /dev/mem\n");
exit(-1);
}
psize = getpagesize();
if((start = (unsigned char*) mmap(0, psize,
PROT_READ | PROT_WRITE,
MAP_SHARED, fd,
BASE_ADDRESS)) == MAP_FAILED) {
printf("Cannot map /dev/mem ret=%d ps=%d fd=%d\n",
start, psize, fd);
printf("Why: %s\n",strerror(errno));
close(fd);
exit(-1);
}
close(fd);
exit(0);
}
ts7200:/usr/rich# gcc -o testlight testlight.c
ts7200:/usr/rich# ls -l
total 7
-rwxr-xr-x 1 root root 5692 Apr 15 21:04 testlight
-rw-r--r-- 1 root root 975 Apr 15 19:27 testlight.c
ts7200:/usr/rich# ./testlight
Cannot map /dev/mem ret=-1 ps=4096 fd=0
Why: No such device
ts7200:/usr/rich#ls -l /dev/mem /dev/kmem
crw-r----- 1 root kmem 1, 2 Dec 31 1969 /dev/kmem
crw-r----- 1 root kmem 1, 1 Dec 31 1969 /dev/mem
some other devices, updated today but not /dev/mem ???
lr-xr-xr-x 1 root root 4 Apr 15 21:00 ram0 -> rd/0
lr-xr-xr-x 1 root root 4 Apr 15 21:00 ram1 -> rd/1
lr-xr-xr-x 1 root root 33 Apr 15 21:00 sda ->
scsi/host0/bus0/target0/lun0/disc
lr-xr-xr-x 1 root root 34 Apr 15 21:00 sda1 ->
scsi/host0/bus0/target0/lun0/part1
lr-xr-xr-x 1 root root 4 Dec 31 1969 stderr ->
fd/2
lr-xr-xr-x 1 root root 4 Dec 31 1969 stdin -> fd/0
lr-xr-xr-x 1 root root 4 Dec 31 1969 stdout ->
fd/1
crw-rw-rw- 1 root tty 5, 0 Dec 31 1969 tty
lr-xr-xr-x 1 root root 4 Apr 15 21:00 tty0 -> vc/0
crw------- 1 root root 204, 16 Apr 15 21:05 ttyAM0
crw--w--w- 1 root root 204, 17 Apr 15 20:58 ttyAM1
ps aux
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME
COMMAND
root 1 0.6 0.7 1432 468 ? S 20:58 0:01 init
[3]
root 2 0.0 0.0 0 0 ? SW 20:58 0:00
[keventd]
root 3 0.2 0.0 0 0 ? RWN 20:58 0:00
[ksoftirqd_CPU0]
root 4 0.0 0.0 0 0 ? SW 20:58 0:00
[kswapd]
root 5 0.0 0.0 0 0 ? SW 20:58 0:00
[bdflush]
root 6 0.0 0.0 0 0 ? SW 20:58 0:00
[kupdated]
root 7 0.0 0.0 0 0 ? SW 20:58 0:00
[mtdblockd]
daemon 54 0.0 0.7 1628 456 ? S 20:58
0:00 /sbin/portmap
root 59 0.0 1.1 3768 676 ? S 20:58
0:00 /usr/sbin/inetd
root 64 0.0 0.6 3432 412 ? S 20:58
0:00 /usr/sbin/telnetd
root 73 0.0 1.7 3088 1080 ? S 20:58
0:00 /www/apache/bin/h
#200 78 0.0 1.7 3088 1068 ? S 20:58
0:00 /www/apache/bin/h
#200 79 0.0 1.7 3088 1068 ? S 20:58
0:00 /www/apache/bin/h
#200 80 0.0 1.7 3088 1068 ? S 20:58
0:00 /www/apache/bin/h
#200 81 0.0 1.7 3088 1068 ? S 20:58
0:00 /www/apache/bin/h
#200 82 0.0 1.7 3088 1068 ? S 20:58
0:00 /www/apache/bin/h
root 89 0.0 1.0 3568 648 ? S 20:58 0:00 -sh
root 90 0.0 0.8 3564 536 ? S 20:58
0:00 /sbin/getty -L 11
root 93 0.0 0.0 0 0 ? SW 20:59 0:00
[khubd]
root 101 0.5 0.0 0 0 ? SW 20:59 0:01 [usb-
storage-0]
root 102 0.0 0.0 0 0 ? SW 20:59 0:00
[scsi_eh_0]
root 104 0.0 0.8 3560 536 ? S 21:00
0:00 /bin/sh /usr/bin/
root 107 0.0 1.5 2240 968 ttyAM0 S 21:00
0:00 /bin/sh /etc/init
root 122 0.0 1.2 1672 780 ? S 21:00
0:00 /sbin/devfsd /dev
root 272 0.0 1.3 2380 832 ? S 21:01
0:00 /sbin/syslogd
root 334 0.0 0.9 1432 588 ? S 21:01
0:00 /sbin/klogd
root 338 0.0 1.2 1608 744 ? S 21:01
0:00 /sbin/rpc.statd
root 343 0.0 1.3 2380 808 ? S 21:01
0:00 /usr/sbin/inetd
root 363 0.0 1.2 1872 740 ? S 21:01
0:00 /usr/sbin/cron
root 370 0.0 2.1 2484 1288 ttyAM0 S 21:01 0:00 bash
root 371 0.0 1.4 2832 900 ttyAM0 R 21:03 0:00 ps -
aux
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