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 "morello_private.h" 16 #include <platform_def.h> 17 18 #ifdef TARGET_PLATFORM_SOC 19 struct morello_plat_info plat_info; 20 #endif 21 22 static scmi_channel_plat_info_t morello_scmi_plat_info = { 23 .scmi_mbx_mem = MORELLO_SCMI_PAYLOAD_BASE, 24 .db_reg_addr = PLAT_CSS_MHU_BASE + CSS_SCMI_MHU_DB_REG_OFF, 25 .db_preserve_mask = 0xfffffffe, 26 .db_modify_mask = 0x1, 27 .ring_doorbell = &mhu_ring_doorbell 28 }; 29 30 scmi_channel_plat_info_t *plat_css_get_scmi_info(unsigned int channel_id) 31 { 32 return &morello_scmi_plat_info; 33 } 34 35 const plat_psci_ops_t *plat_arm_psci_override_pm_ops(plat_psci_ops_t *ops) 36 { 37 ops->pwr_domain_off = morello_pwr_domain_off; 38 return css_scmi_override_pm_ops(ops); 39 } 40 41 void bl31_platform_setup(void) 42 { 43 #ifdef TARGET_PLATFORM_SOC 44 int ret; 45 46 ret = sds_init(); 47 if (ret != SDS_OK) { 48 ERROR("SDS initialization failed. ret:%d\n", ret); 49 panic(); 50 } 51 52 ret = sds_struct_read(MORELLO_SDS_PLATFORM_INFO_STRUCT_ID, 53 MORELLO_SDS_PLATFORM_INFO_OFFSET, 54 &plat_info, 55 MORELLO_SDS_PLATFORM_INFO_SIZE, 56 SDS_ACCESS_MODE_NON_CACHED); 57 if (ret != SDS_OK) { 58 ERROR("Error getting platform info from SDS. ret:%d\n", ret); 59 panic(); 60 } 61 #endif 62 arm_bl31_platform_setup(); 63 } 64 65 #ifdef TARGET_PLATFORM_SOC 66 /***************************************************************************** 67 * plat_is_smccc_feature_available() - This function checks whether SMCCC 68 * feature is availabile for platform. 69 * @fid: SMCCC function id 70 * 71 * Return SMC_ARCH_CALL_SUCCESS if SMCCC feature is available and 72 * SMC_ARCH_CALL_NOT_SUPPORTED otherwise. 73 *****************************************************************************/ 74 int32_t plat_is_smccc_feature_available(u_register_t fid) 75 { 76 switch (fid) { 77 case SMCCC_ARCH_SOC_ID: 78 return SMC_ARCH_CALL_SUCCESS; 79 default: 80 return SMC_ARCH_CALL_NOT_SUPPORTED; 81 } 82 } 83 84 /* Get SOC version */ 85 int32_t plat_get_soc_version(void) 86 { 87 int ssc_version; 88 89 ssc_version = mmio_read_32(SSC_VERSION); 90 91 return (int32_t) 92 (SOC_ID_SET_JEP_106(ARM_SOC_CONTINUATION_CODE, 93 ARM_SOC_IDENTIFICATION_CODE) | 94 (GET_SSC_VERSION_PART_NUM(ssc_version) & SOC_ID_IMPL_DEF_MASK)); 95 } 96 97 /* Get SOC revision */ 98 int32_t plat_get_soc_revision(void) 99 { 100 return (int32_t)plat_info.silicon_revision; 101 } 102 #endif 103