1 /* 2 * Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #include <bl_common.h> 8 #include <debug.h> 9 #include <desc_image_load.h> 10 #include <errno.h> 11 #include <io/io_storage.h> 12 #include <platform.h> 13 #include <platform_def.h> 14 #include <xlat_tables_v2.h> 15 16 #include "uniphier.h" 17 18 static int uniphier_bl2_kick_scp; 19 20 void bl2_el3_early_platform_setup(u_register_t x0, u_register_t x1, 21 u_register_t x2, u_register_t x3) 22 { 23 uniphier_console_setup(); 24 } 25 26 static const struct mmap_region uniphier_bl2_mmap[] = { 27 /* for SCP, BL33 */ 28 MAP_REGION_FLAT(UNIPHIER_NS_DRAM_BASE, UNIPHIER_NS_DRAM_SIZE, 29 MT_MEMORY | MT_RW | MT_NS), 30 { .size = 0 }, 31 }; 32 33 void bl2_el3_plat_arch_setup(void) 34 { 35 unsigned int soc; 36 int skip_scp = 0; 37 int ret; 38 39 uniphier_mmap_setup(UNIPHIER_SEC_DRAM_BASE, UNIPHIER_SEC_DRAM_SIZE, 40 uniphier_bl2_mmap); 41 enable_mmu_el3(0); 42 43 soc = uniphier_get_soc_id(); 44 if (soc == UNIPHIER_SOC_UNKNOWN) { 45 ERROR("unsupported SoC\n"); 46 plat_error_handler(-ENOTSUP); 47 } 48 49 ret = uniphier_io_setup(soc); 50 if (ret) { 51 ERROR("failed to setup io devices\n"); 52 plat_error_handler(ret); 53 } 54 55 switch (uniphier_get_boot_master(soc)) { 56 case UNIPHIER_BOOT_MASTER_THIS: 57 INFO("Booting from this SoC\n"); 58 skip_scp = 1; 59 break; 60 case UNIPHIER_BOOT_MASTER_SCP: 61 INFO("Booting from on-chip SCP\n"); 62 if (uniphier_scp_is_running()) { 63 INFO("SCP is already running. SCP_BL2 load will be skipped.\n"); 64 skip_scp = 1; 65 } 66 67 /* 68 * SCP must be kicked every time even if it is already running 69 * because it polls this event after the reboot of the backend. 70 */ 71 uniphier_bl2_kick_scp = 1; 72 break; 73 case UNIPHIER_BOOT_MASTER_EXT: 74 INFO("Booting from external SCP\n"); 75 skip_scp = 1; 76 break; 77 default: 78 plat_error_handler(-ENOTSUP); 79 } 80 81 if (!skip_scp) { 82 ret = uniphier_check_image(SCP_BL2_IMAGE_ID); 83 if (ret) { 84 WARN("SCP_BL2 image not found. SCP_BL2 load will be skipped.\n"); 85 WARN("You must setup SCP by other means.\n"); 86 skip_scp = 1; 87 uniphier_bl2_kick_scp = 0; 88 } 89 } 90 91 if (skip_scp) 92 uniphier_image_descs_fixup(); 93 } 94 95 void bl2_platform_setup(void) 96 { 97 } 98 99 void plat_flush_next_bl_params(void) 100 { 101 flush_bl_params_desc(); 102 } 103 104 bl_load_info_t *plat_get_bl_image_load_info(void) 105 { 106 return get_bl_load_info_from_mem_params_desc(); 107 } 108 109 bl_params_t *plat_get_next_bl_params(void) 110 { 111 return get_next_bl_params_from_mem_params_desc(); 112 } 113 114 int bl2_plat_handle_post_image_load(unsigned int image_id) 115 { 116 if (image_id == SCP_BL2_IMAGE_ID && uniphier_bl2_kick_scp) 117 uniphier_scp_start(); 118 119 return 0; 120 } 121