plat_sip_calls.c

/*
 * Copyright (c) 2015, ARM Limited and Contributors. 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 ARM 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 IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
#include <crypt.h>
#include <debug.h>
#include <mmio.h>
#include <mtk_sip_svc.h>
#include <mtcmos.h>
#include <plat_sip_calls.h>
#include <runtime_svc.h>

/* Authorized secure register list */
enum {
	SREG_HDMI_COLOR_EN = 0x14000904
};

static const uint32_t authorized_sreg[] = {
	SREG_HDMI_COLOR_EN
};

#define authorized_sreg_cnt	\
	(sizeof(authorized_sreg) / sizeof(authorized_sreg[0]))

uint64_t mt_sip_set_authorized_sreg(uint32_t sreg, uint32_t val)
{
	uint64_t i;

	for (i = 0; i < authorized_sreg_cnt; i++) {
		if (authorized_sreg[i] == sreg) {
			mmio_write_32(sreg, val);
			return MTK_SIP_E_SUCCESS;
		}
	}

	return MTK_SIP_E_INVALID_PARAM;
}

static uint64_t mt_sip_pwr_on_mtcmos(uint32_t val)
{
	uint32_t ret;

	ret = mtcmos_non_cpu_ctrl(1, val);
	if (ret)
		return MTK_SIP_E_INVALID_PARAM;
	else
		return MTK_SIP_E_SUCCESS;
}

static uint64_t mt_sip_pwr_off_mtcmos(uint32_t val)
{
	uint32_t ret;

	ret = mtcmos_non_cpu_ctrl(0, val);
	if (ret)
		return MTK_SIP_E_INVALID_PARAM;
	else
		return MTK_SIP_E_SUCCESS;
}

static uint64_t mt_sip_pwr_mtcmos_support(void)
{
	return MTK_SIP_E_SUCCESS;
}

uint64_t mediatek_plat_sip_handler(uint32_t smc_fid,
				   uint64_t x1,
				   uint64_t x2,
				   uint64_t x3,
				   uint64_t x4,
				   void *cookie,
				   void *handle,
				   uint64_t flags)
{
	uint64_t ret;

	switch (smc_fid) {
	case MTK_SIP_PWR_ON_MTCMOS:
		ret = mt_sip_pwr_on_mtcmos((uint32_t)x1);
		SMC_RET1(handle, ret);

	case MTK_SIP_PWR_OFF_MTCMOS:
		ret = mt_sip_pwr_off_mtcmos((uint32_t)x1);
		SMC_RET1(handle, ret);

	case MTK_SIP_PWR_MTCMOS_SUPPORT:
		ret = mt_sip_pwr_mtcmos_support();
		SMC_RET1(handle, ret);

	case MTK_SIP_SET_HDCP_KEY_EX:
		ret = crypt_set_hdcp_key_ex(x1, x2, x3);
		SMC_RET1(handle, ret);

	case MTK_SIP_SET_HDCP_KEY_NUM:
		ret = crypt_set_hdcp_key_num((uint32_t)x1);
		SMC_RET1(handle, ret);

	case MTK_SIP_CLR_HDCP_KEY:
		ret = crypt_clear_hdcp_key();
		SMC_RET1(handle, ret);

	default:
		ERROR("%s: unhandled SMC (0x%x)\n", __func__, smc_fid);
		break;
	}

	SMC_RET1(handle, SMC_UNK);
}