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/*
* Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <assert.h>
#include <cdefs.h>
#include <stdlib.h>
#include <string.h>
#include <lib/smccc.h>
#include <cdn_dp.h>
__asm__(
".pushsection .text.hdcp_handler, \"ax\", %progbits\n"
".global hdcp_handler\n"
".balign 4\n"
"hdcp_handler:\n"
".incbin \"" HDCPFW "\"\n"
".type hdcp_handler, %function\n"
".size hdcp_handler, .- hdcp_handler\n"
".popsection\n"
);
static uint64_t *hdcp_key_pdata;
static struct cdn_dp_hdcp_key_1x key;
int hdcp_handler(struct cdn_dp_hdcp_key_1x *key);
uint64_t dp_hdcp_ctrl(uint64_t type)
{
switch (type) {
case HDCP_KEY_DATA_START_TRANSFER:
memset(&key, 0x00, sizeof(key));
hdcp_key_pdata = (uint64_t *)&key;
return 0;
case HDCP_KEY_DATA_START_DECRYPT:
if (hdcp_key_pdata == (uint64_t *)(&key + 1))
return hdcp_handler(&key);
else
return PSCI_E_INVALID_PARAMS;
assert(0); /* Unreachable */
default:
return SMC_UNK;
}
}
uint64_t dp_hdcp_store_key(uint64_t x1,
uint64_t x2,
uint64_t x3,
uint64_t x4,
uint64_t x5,
uint64_t x6)
{
if (hdcp_key_pdata < (uint64_t *)&key ||
hdcp_key_pdata + 6 > (uint64_t *)(&key + 1))
return PSCI_E_INVALID_PARAMS;
hdcp_key_pdata[0] = x1;
hdcp_key_pdata[1] = x2;
hdcp_key_pdata[2] = x3;
hdcp_key_pdata[3] = x4;
hdcp_key_pdata[4] = x5;
hdcp_key_pdata[5] = x6;
hdcp_key_pdata += 6;
return 0;
}
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