1 files changed, 124 insertions, 0 deletions
diff --git a/src/vendorcode/cavium/bdk/libbdk-driver/bdk-driver-rnm.c b/src/vendorcode/cavium/bdk/libbdk-driver/bdk-driver-rnm.c
new file mode 100644
index 0000000000..8394ad8c5e
--- /dev/null
+++ b/src/vendorcode/cavium/bdk/libbdk-driver/bdk-driver-rnm.c
@@ -0,0 +1,124 @@
+/***********************license start***********************************
+* Copyright (c) 2003-2017  Cavium Inc. (support@cavium.com). All rights
+* reserved.
+*
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions are
+* met:
+*
+*   * Redistributions of source code must retain the above copyright
+*     notice, this list of conditions and the following disclaimer.
+*
+*   * Redistributions in binary form must reproduce the above
+*     copyright notice, this list of conditions and the following
+*     disclaimer in the documentation and/or other materials provided
+*     with the distribution.
+*
+*   * Neither the name of Cavium Inc. nor the names of
+*     its contributors may be used to endorse or promote products
+*     derived from this software without specific prior written
+*     permission.
+*
+* This Software, including technical data, may be subject to U.S. export
+* control laws, including the U.S. Export Administration Act and its
+* associated regulations, and may be subject to export or import
+* regulations in other countries.
+*
+* TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
+* AND WITH ALL FAULTS AND CAVIUM INC. MAKES NO PROMISES, REPRESENTATIONS OR
+* WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT
+* TO THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY
+* REPRESENTATION OR DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT
+* DEFECTS, AND CAVIUM SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES
+* OF TITLE, MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR
+* PURPOSE, LACK OF VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT,
+* QUIET POSSESSION OR CORRESPONDENCE TO DESCRIPTION. THE ENTIRE  RISK
+* ARISING OUT OF USE OR PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
+***********************license end**************************************/
+#include <bdk.h>
+#include "libbdk-arch/bdk-csrs-pccpf.h"
+#include "libbdk-arch/bdk-csrs-rnm.h"
+
+BDK_REQUIRE_DEFINE(RNM);
+
+/**
+ * Reads 8 bits of random data from Random number generator
+ *
+ * @return random data
+ */
+uint8_t bdk_rng_get_random8(void)
+{
+
+    return bdk_read64_uint8(bdk_numa_get_address(bdk_numa_local(), BDK_RNM_RANDOM));
+}
+
+/**
+ * Reads 16 bits of random data from Random number generator
+ *
+ * @return random data
+ */
+uint16_t bdk_rng_get_random16(void)
+{
+    return bdk_read64_uint16(bdk_numa_get_address(bdk_numa_local(), BDK_RNM_RANDOM));
+}
+
+/**
+ * Reads 32 bits of random data from Random number generator
+ *
+ * @return random data
+ */
+uint32_t bdk_rng_get_random32(void)
+{
+    return bdk_read64_uint32(bdk_numa_get_address(bdk_numa_local(), BDK_RNM_RANDOM));
+}
+
+/**
+ * Reads 64 bits of random data from Random number generator
+ *
+ * @return random data
+ */
+uint64_t bdk_rng_get_random64(void)
+{
+    return bdk_read64_uint64(bdk_numa_get_address(bdk_numa_local(), BDK_RNM_RANDOM));
+}
+
+/**
+ * The RNM probe function
+ *
+ * @param device RNM to probe
+ *
+ * @return Zero on success, negative on failure
+ */
+static int probe(bdk_device_t *device)
+{
+    bdk_device_rename(device, "N%d.RNM%d", device->node, device->instance);
+    return 0;
+}
+
+/**
+ * RNM init() function
+ *
+ * @param device RNM to initialize
+ *
+ * @return Zero on success, negative on failure
+ */
+static int init(bdk_device_t *device)
+{
+    BDK_BAR_MODIFY(c, device, BDK_RNM_CTL_STATUS,
+        c.s.ent_en = 1;
+        c.s.rng_en = 1);
+    /* Read back after enable so we know it is done. Needed on t88 pass 2.0 emulator */
+    BDK_BAR_READ(device, BDK_RNM_CTL_STATUS);
+    /* Errata (RNM-22528) First consecutive reads to RNM_RANDOM return same
+       value. Before using the random entropy, read RNM_RANDOM at least once
+       and discard the data */
+    bdk_rng_get_random64();
+    return 0;
+}
+
+bdk_driver_t __bdk_driver_rnm = {
+    .id = (BDK_PCC_PROD_E_GEN << 24) | BDK_PCC_VENDOR_E_CAVIUM | (BDK_PCC_DEV_IDL_E_RNM << 16),
+    .probe = probe,
+    .init = init,
+};