1 /* 2 * Copyright (c) 2020, Arm Limited. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #include <common/debug.h> 8 #include <drivers/arm/css/css_mhu_doorbell.h> 9 #include <drivers/arm/css/scmi.h> 10 #include <drivers/arm/css/sds.h> 11 #include <plat/arm/common/plat_arm.h> 12 13 #include "morello_def.h" 14 #include <platform_def.h> 15 16 /* 17 * Platform information structure stored in SDS. 18 * This structure holds information about platform's DDR 19 * size which is an information about multichip setup 20 * - multichip mode 21 * - slave_count 22 * - Local DDR size in GB, DDR memory in master board 23 * - Remote DDR size in GB, DDR memory in slave board 24 */ 25 struct morello_plat_info { 26 bool multichip_mode; 27 uint8_t slave_count; 28 uint8_t local_ddr_size; 29 uint8_t remote_ddr_size; 30 } __packed; 31 32 /* 33 * BL33 image information structure stored in SDS. 34 * This structure holds the source & destination addresses and 35 * the size of the BL33 image which will be loaded by BL31. 36 */ 37 struct morello_bl33_info { 38 uint32_t bl33_src_addr; 39 uint32_t bl33_dst_addr; 40 uint32_t bl33_size; 41 }; 42 43 static scmi_channel_plat_info_t morello_scmi_plat_info = { 44 .scmi_mbx_mem = MORELLO_SCMI_PAYLOAD_BASE, 45 .db_reg_addr = PLAT_CSS_MHU_BASE + CSS_SCMI_MHU_DB_REG_OFF, 46 .db_preserve_mask = 0xfffffffe, 47 .db_modify_mask = 0x1, 48 .ring_doorbell = &mhu_ring_doorbell 49 }; 50 51 scmi_channel_plat_info_t *plat_css_get_scmi_info(int channel_id) 52 { 53 return &morello_scmi_plat_info; 54 } 55 56 const plat_psci_ops_t *plat_arm_psci_override_pm_ops(plat_psci_ops_t *ops) 57 { 58 return css_scmi_override_pm_ops(ops); 59 } 60 61 static void copy_bl33(uint32_t src, uint32_t dst, uint32_t size) 62 { 63 unsigned int i; 64 65 INFO("Copying BL33 to DDR memory...\n"); 66 for (i = 0U; i < size; (i = i + 8U)) 67 mmio_write_64((dst + i), mmio_read_64(src + i)); 68 69 for (i = 0U; i < size; (i = i + 8U)) { 70 if (mmio_read_64(src + i) != mmio_read_64(dst + i)) { 71 ERROR("Copy failed!\n"); 72 panic(); 73 } 74 } 75 INFO("done\n"); 76 } 77 78 void bl31_platform_setup(void) 79 { 80 int ret; 81 struct morello_plat_info plat_info; 82 struct morello_bl33_info bl33_info; 83 84 ret = sds_init(); 85 if (ret != SDS_OK) { 86 ERROR("SDS initialization failed. ret:%d\n", ret); 87 panic(); 88 } 89 90 ret = sds_struct_read(MORELLO_SDS_PLATFORM_INFO_STRUCT_ID, 91 MORELLO_SDS_PLATFORM_INFO_OFFSET, 92 &plat_info, 93 MORELLO_SDS_PLATFORM_INFO_SIZE, 94 SDS_ACCESS_MODE_NON_CACHED); 95 if (ret != SDS_OK) { 96 ERROR("Error getting platform info from SDS. ret:%d\n", ret); 97 panic(); 98 } 99 100 /* Validate plat_info SDS */ 101 if ((plat_info.local_ddr_size == 0U) 102 || (plat_info.local_ddr_size > MORELLO_MAX_DDR_CAPACITY_GB) 103 || (plat_info.remote_ddr_size > MORELLO_MAX_DDR_CAPACITY_GB) 104 || (plat_info.slave_count > MORELLO_MAX_SLAVE_COUNT)) { 105 ERROR("platform info SDS is corrupted\n"); 106 panic(); 107 } 108 109 arm_bl31_platform_setup(); 110 111 ret = sds_struct_read(MORELLO_SDS_BL33_INFO_STRUCT_ID, 112 MORELLO_SDS_BL33_INFO_OFFSET, 113 &bl33_info, 114 MORELLO_SDS_BL33_INFO_SIZE, 115 SDS_ACCESS_MODE_NON_CACHED); 116 if (ret != SDS_OK) { 117 ERROR("Error getting BL33 info from SDS. ret:%d\n", ret); 118 panic(); 119 } 120 copy_bl33(bl33_info.bl33_src_addr, 121 bl33_info.bl33_dst_addr, 122 bl33_info.bl33_size); 123 /* 124 * Pass platform information to BL33. This method is followed as 125 * currently there is no BL1/BL2 involved in boot flow of MORELLO. 126 * When TBBR is implemented for MORELLO, this method should be removed 127 * and platform information should be passed to BL33 using NT_FW_CONFIG 128 * passing mechanism. 129 */ 130 mmio_write_32(MORELLO_PLATFORM_INFO_BASE, *(uint32_t *)&plat_info); 131 } 132