1 /* 2 * Copyright (c) 2020-2023, Arm Limited. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #include <drivers/arm/css/css_mhu_doorbell.h> 8 #include <drivers/arm/css/scmi.h> 9 #include <drivers/arm/css/sds.h> 10 #include <lib/smccc.h> 11 #include <plat/arm/common/plat_arm.h> 12 #include <services/arm_arch_svc.h> 13 14 #include "morello_def.h" 15 #include <platform_def.h> 16 17 #ifdef TARGET_PLATFORM_SOC 18 struct morello_plat_info plat_info; 19 #endif 20 21 static scmi_channel_plat_info_t morello_scmi_plat_info = { 22 .scmi_mbx_mem = MORELLO_SCMI_PAYLOAD_BASE, 23 .db_reg_addr = PLAT_CSS_MHU_BASE + CSS_SCMI_MHU_DB_REG_OFF, 24 .db_preserve_mask = 0xfffffffe, 25 .db_modify_mask = 0x1, 26 .ring_doorbell = &mhu_ring_doorbell 27 }; 28 29 scmi_channel_plat_info_t *plat_css_get_scmi_info(unsigned int channel_id) 30 { 31 return &morello_scmi_plat_info; 32 } 33 34 const plat_psci_ops_t *plat_arm_psci_override_pm_ops(plat_psci_ops_t *ops) 35 { 36 return css_scmi_override_pm_ops(ops); 37 } 38 39 void bl31_platform_setup(void) 40 { 41 #ifdef TARGET_PLATFORM_SOC 42 int ret; 43 44 ret = sds_init(); 45 if (ret != SDS_OK) { 46 ERROR("SDS initialization failed. ret:%d\n", ret); 47 panic(); 48 } 49 50 ret = sds_struct_read(MORELLO_SDS_PLATFORM_INFO_STRUCT_ID, 51 MORELLO_SDS_PLATFORM_INFO_OFFSET, 52 &plat_info, 53 MORELLO_SDS_PLATFORM_INFO_SIZE, 54 SDS_ACCESS_MODE_NON_CACHED); 55 if (ret != SDS_OK) { 56 ERROR("Error getting platform info from SDS. ret:%d\n", ret); 57 panic(); 58 } 59 #endif 60 arm_bl31_platform_setup(); 61 } 62 63 #ifdef TARGET_PLATFORM_SOC 64 /***************************************************************************** 65 * plat_is_smccc_feature_available() - This function checks whether SMCCC 66 * feature is availabile for platform. 67 * @fid: SMCCC function id 68 * 69 * Return SMC_ARCH_CALL_SUCCESS if SMCCC feature is available and 70 * SMC_ARCH_CALL_NOT_SUPPORTED otherwise. 71 *****************************************************************************/ 72 int32_t plat_is_smccc_feature_available(u_register_t fid) 73 { 74 switch (fid) { 75 case SMCCC_ARCH_SOC_ID: 76 return SMC_ARCH_CALL_SUCCESS; 77 default: 78 return SMC_ARCH_CALL_NOT_SUPPORTED; 79 } 80 } 81 82 /* Get SOC version */ 83 int32_t plat_get_soc_version(void) 84 { 85 int ssc_version; 86 87 ssc_version = mmio_read_32(SSC_VERSION); 88 89 return (int32_t) 90 (SOC_ID_SET_JEP_106(ARM_SOC_CONTINUATION_CODE, 91 ARM_SOC_IDENTIFICATION_CODE) | 92 (GET_SSC_VERSION_PART_NUM(ssc_version) & SOC_ID_IMPL_DEF_MASK)); 93 } 94 95 /* Get SOC revision */ 96 int32_t plat_get_soc_revision(void) 97 { 98 return (int32_t)plat_info.silicon_revision; 99 } 100 #endif 101