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-rw-r--r--util/resetcf/resetcf.c42
1 files changed, 42 insertions, 0 deletions
diff --git a/util/resetcf/resetcf.c b/util/resetcf/resetcf.c
new file mode 100644
index 0000000000..1977f7dbcb
--- /dev/null
+++ b/util/resetcf/resetcf.c
@@ -0,0 +1,42 @@
+#include <stdio.h>
+#include <fcntl.h>
+
+#include <unistd.h>
+#include <sys/mman.h>
+
+main(int argc, char *argv[])
+{
+ int i;
+ volatile unsigned char *cp;
+ int fd;
+ void *v;
+ off_t nvram;
+ size_t length = 0x1000;
+
+ fd = open("/proc/bus/pci/00/0a.1",O_RDONLY);
+ lseek(fd,0x10,0);
+ read(fd,&nvram,sizeof(nvram));
+ close(fd);
+ //printf("Star %x\n",nvram);
+
+ if((fd = open("/dev/mem",O_RDWR)) != -1)
+ {
+ v = mmap(0, length, PROT_READ | PROT_WRITE, MAP_SHARED,fd,nvram);
+ fprintf(stderr, "mmap returns %p\n", v);
+
+ if ( v == (void *) -1)
+ {
+ perror("mmap");
+ exit(1);
+ }
+ } else {
+ perror("open /dev/mem");
+ exit(1);
+ }
+
+ for( i = 0x836 ; i < 0x840 ; i++){
+ *(unsigned char *)(v+i) = 0;
+ }
+
+
+}