fixed up sytem revsion to mx27

original fsl code used to look into /proc/cpuinfo for cpu version and revison.
It doesn't work on a mainline mxc kernel though. For now we fix the system
revision to mx27 rev. 0x20 since we only have the microcode for mx27 anyway.

Signed-off-by: Luotao Fu <l.fu@pengutronix.de>

1 files changed, 7 insertions, 32 deletions

diff --git a/src/vpu_io.c b/src/vpu_io.c
index 5c8765c..d462106 100644
--- a/src/vpu_io.c
+++ b/src/vpu_io.c
@@ -54,38 +54,13 @@ isVpuInitialized(void)
 static int
 get_system_rev()
 {
-	FILE *fp;
-	char buf[1024];
-	int nread;
-	char *tmp, *rev;
-	int ret = -1;
-
-	fp = fopen("/proc/cpuinfo", "r");
-	if (fp == NULL) {
-		perror("/proc/cpuinfo\n");
-		return ret;
-	}
-
-	nread = fread(buf, 1, sizeof (buf), fp);
-	fclose(fp);
-	if ((nread == 0) || (nread == sizeof (buf))) {
-		fclose(fp);
-		return ret;
-	}
-
-	buf[nread] = '\0';
-
-	tmp = strstr(buf, "Revision");
-	if (tmp != NULL) {
-		rev = index(tmp, ':');
-		if (rev != NULL) {
-			rev++;
-			system_rev = strtoul(rev, NULL, 16);
-			ret = 0;
-		}
-	}
-
-	return ret;
+	/* FIXME: incredibly ugly hack. original fsl code used to look into
+	 * /proc/cpuinfo for cpu version and revison. It doesn't work on a
+	 * mainline mxc kernel though. For now
+	 * we fix the system revision to mx27 rev. 0x20 since we only have the
+	 * microcode for mx27 anyway. */
+	system_rev = 0x27020;
+	return 0;
 }
 
 /* make consideration for both register and physical mem access */