rockchip: implement hdcp key decryption feature for rk3399
Decrypt device private keys which transfer from kernel, then stuff it to
DP controller. So that DP driver could start HDCP authentication in
kernel.
Change-Id: If3c2cd99bca811fe5fc30acc88bf5dc1afd7416d
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>
diff --git a/plat/rockchip/rk3399/drivers/dp/cdn_dp.h b/plat/rockchip/rk3399/drivers/dp/cdn_dp.h
new file mode 100644
index 0000000..3b9a108
--- /dev/null
+++ b/plat/rockchip/rk3399/drivers/dp/cdn_dp.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef __SOC_ROCKCHIP_RK3399_DP_H__
+#define __SOC_ROCKCHIP_RK3399_DP_H__
+#include <plat_private.h>
+
+enum {
+ CDN_DP_HDCP_1X_KSV_LEN = 5,
+ CDN_DP_HDCP_KSV_LEN = 8,
+ CDN_DP_HDCP_RESERVED_LEN = 10,
+ CDN_DP_HDCP_UID_LEN = 16,
+ CDN_DP_HDCP_SHA_LEN = 20,
+ CDN_DP_HDCP_DPK_LEN = 280,
+ CDN_DP_HDCP_1X_KEYS_LEN = 285,
+ CDN_DP_HDCP_KEY_LEN = 326,
+};
+
+struct cdn_dp_hdcp_key_1x {
+ uint8_t ksv[CDN_DP_HDCP_KSV_LEN];
+ uint8_t device_key[CDN_DP_HDCP_DPK_LEN];
+ uint8_t sha1[CDN_DP_HDCP_SHA_LEN];
+ uint8_t uid[CDN_DP_HDCP_UID_LEN];
+ uint16_t seed;
+ uint8_t reserved[CDN_DP_HDCP_RESERVED_LEN];
+};
+
+#define HDCP_KEY_DATA_START_TRANSFER 0
+#define HDCP_KEY_DATA_START_DECRYPT 1
+#define HDCP_KEY_1X_STORE_DATA_ALIGN_SIZE (6 * 64) / 8
+
+/* Checks the cdn_dp_hdcp_key_1x must be aligned on 6 x 64-bit word boundary */
+CASSERT(sizeof(struct cdn_dp_hdcp_key_1x) % HDCP_KEY_1X_STORE_DATA_ALIGN_SIZE, \
+ assert_hdcp_key_1x_store_data_align_size_mismatch);
+
+uint64_t dp_hdcp_ctrl(uint64_t type);
+
+uint64_t dp_hdcp_store_key(uint64_t x1,
+ uint64_t x2,
+ uint64_t x3,
+ uint64_t x4,
+ uint64_t x5,
+ uint64_t x6);
+#endif