changed values in conditions to make it work

Author: bswiercz

random/imx6ull-rngb.c

@@ -106,7 +106,7 @@ static int systemInit(void)
 	int err;
 	oid_t dev;
 
-	common_rngb.base = mmap(NULL, MMAP_SIZE, PROT_READ | PROT_WRITE, MAP_DEVICE | MAP_UNCACHED, OID_PHYSMEM, RNGB_START_ADDRESS);
+	common_rngb.base = mmap(NULL, MMAP_SIZE, PROT_READ | PROT_WRITE, MAP_DEVICE, OID_PHYSMEM, RNGB_START_ADDRESS);
 	if (common_rngb.base == MAP_FAILED) {
 		printf("rngb: could not map addr\n");
 		return -1;
@@ -154,13 +154,13 @@ static int hardwareInit(void)
 	/* Reset and wait until rngb is sleeping */
 	*(common_rngb.base + rng_cmd) = 0x40;
 	do {
-		err = *(common_rngb.base + rng_sr) & 0x4;
+		err = *(common_rngb.base + rng_sr) & 0x04;
 	} while (err == 0);
 
 	interrupt(RNGB_IRQ, rngb_intr, NULL, common_rngb.cond, NULL);
 
 	/* Run self test */
-	*(common_rngb.base + rng_cmd) = 0x1;
+	*(common_rngb.base + rng_cmd) = 0x01;
 	mutexLock(common_rngb.lock);
 	while (common_rngb.intr_st == 0) {
 		condWait(common_rngb.cond, common_rngb.lock, 3000);
@@ -177,7 +177,7 @@ static int hardwareInit(void)
 	common_rngb.intr_st = 0;
 
 	/* Run seeding */
-	*(common_rngb.base + rng_cmd) = 0x2;
+	*(common_rngb.base + rng_cmd) = 0x02;
 	mutexLock(common_rngb.lock);
 	while (common_rngb.intr_st == 0) {
 		condWait(common_rngb.cond, common_rngb.lock, 3000);
@@ -195,6 +195,9 @@ static int hardwareInit(void)
 
 	/* Enable automatic seeding */
 	*(common_rngb.base + rng_cr) = 0x10;
+
+    printf("imx6ull-rngb: initialized\n");
+
 	return 0;
 }
 
@@ -217,7 +220,7 @@ static int readRandoms(char *buff, size_t size, unsigned mode)
 	while (i < size) {
 		if ((i % sizeof(uint32_t)) == 0) {
 			status = *(common_rngb.base + rng_sr);
-			if ((status & (1 << 16)) == 0) {
+			if ((status & (1 << 16)) == 1) {
 				mutexUnlock(common_rngb.lock);
 				return -EIO;
 			}