1 /* 2 * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are met: 6 * 7 * Redistributions of source code must retain the above copyright notice, this 8 * list of conditions and the following disclaimer. 9 * 10 * Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 14 * Neither the name of ARM nor the names of its contributors may be used 15 * to endorse or promote products derived from this software without specific 16 * prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 #include <debug.h> 31 #include <mmio.h> 32 #include <mtk_sip_svc.h> 33 #include <mtcmos.h> 34 #include <plat_sip_calls.h> 35 #include <runtime_svc.h> 36 37 /* Authorized secure register list */ 38 enum { 39 SREG_HDMI_COLOR_EN = 0x14000904 40 }; 41 42 static const uint32_t authorized_sreg[] = { 43 SREG_HDMI_COLOR_EN 44 }; 45 46 #define authorized_sreg_cnt \ 47 (sizeof(authorized_sreg) / sizeof(authorized_sreg[0])) 48 49 uint64_t mt_sip_set_authorized_sreg(uint32_t sreg, uint32_t val) 50 { 51 uint64_t i; 52 53 for (i = 0; i < authorized_sreg_cnt; i++) { 54 if (authorized_sreg[i] == sreg) { 55 mmio_write_32(sreg, val); 56 return MTK_SIP_E_SUCCESS; 57 } 58 } 59 60 return MTK_SIP_E_INVALID_PARAM; 61 } 62 63 static uint64_t mt_sip_pwr_on_mtcmos(uint32_t val) 64 { 65 uint32_t ret; 66 67 ret = mtcmos_non_cpu_ctrl(1, val); 68 if (ret) 69 return MTK_SIP_E_INVALID_PARAM; 70 else 71 return MTK_SIP_E_SUCCESS; 72 } 73 74 static uint64_t mt_sip_pwr_off_mtcmos(uint32_t val) 75 { 76 uint32_t ret; 77 78 ret = mtcmos_non_cpu_ctrl(0, val); 79 if (ret) 80 return MTK_SIP_E_INVALID_PARAM; 81 else 82 return MTK_SIP_E_SUCCESS; 83 } 84 85 static uint64_t mt_sip_pwr_mtcmos_support(void) 86 { 87 return MTK_SIP_E_SUCCESS; 88 } 89 90 uint64_t mediatek_plat_sip_handler(uint32_t smc_fid, 91 uint64_t x1, 92 uint64_t x2, 93 uint64_t x3, 94 uint64_t x4, 95 void *cookie, 96 void *handle, 97 uint64_t flags) 98 { 99 uint64_t ret; 100 101 switch (smc_fid) { 102 case MTK_SIP_PWR_ON_MTCMOS: 103 ret = mt_sip_pwr_on_mtcmos((uint32_t)x1); 104 SMC_RET1(handle, ret); 105 106 case MTK_SIP_PWR_OFF_MTCMOS: 107 ret = mt_sip_pwr_off_mtcmos((uint32_t)x1); 108 SMC_RET1(handle, ret); 109 110 case MTK_SIP_PWR_MTCMOS_SUPPORT: 111 ret = mt_sip_pwr_mtcmos_support(); 112 SMC_RET1(handle, ret); 113 114 default: 115 ERROR("%s: unhandled SMC (0x%x)\n", __func__, smc_fid); 116 break; 117 } 118 119 SMC_RET1(handle, SMC_UNK); 120 } 121