1 /* 2 * Copyright (c) 2017, 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 meminfo_t uniphier_bl2_tzram_layout __aligned(CACHE_WRITEBACK_GRANULE); 19 static int uniphier_bl2_kick_scp; 20 bl2_early_platform_setup(meminfo_t * mem_layout)21void bl2_early_platform_setup(meminfo_t *mem_layout) 22 { 23 uniphier_bl2_tzram_layout = *mem_layout; 24 25 uniphier_console_setup(); 26 } 27 28 static const struct mmap_region uniphier_bl2_mmap[] = { 29 /* for SCP, BL33 */ 30 MAP_REGION_FLAT(UNIPHIER_NS_DRAM_BASE, UNIPHIER_NS_DRAM_SIZE, 31 MT_MEMORY | MT_RW | MT_NS), 32 { .size = 0 }, 33 }; 34 bl2_plat_arch_setup(void)35void bl2_plat_arch_setup(void) 36 { 37 unsigned int soc; 38 int skip_scp = 0; 39 int ret; 40 41 uniphier_mmap_setup(UNIPHIER_SEC_DRAM_BASE, UNIPHIER_SEC_DRAM_SIZE, 42 uniphier_bl2_mmap); 43 enable_mmu_el1(0); 44 45 soc = uniphier_get_soc_id(); 46 if (soc == UNIPHIER_SOC_UNKNOWN) { 47 ERROR("unsupported SoC\n"); 48 plat_error_handler(-ENOTSUP); 49 } 50 51 ret = uniphier_io_setup(soc); 52 if (ret) { 53 ERROR("failed to setup io devices\n"); 54 plat_error_handler(ret); 55 } 56 57 switch (uniphier_get_boot_master(soc)) { 58 case UNIPHIER_BOOT_MASTER_THIS: 59 INFO("Booting from this SoC\n"); 60 skip_scp = 1; 61 break; 62 case UNIPHIER_BOOT_MASTER_SCP: 63 INFO("Booting from on-chip SCP\n"); 64 if (uniphier_scp_is_running()) { 65 INFO("SCP is already running. SCP_BL2 load will be skipped.\n"); 66 skip_scp = 1; 67 } 68 69 /* 70 * SCP must be kicked every time even if it is already running 71 * because it polls this event after the reboot of the backend. 72 */ 73 uniphier_bl2_kick_scp = 1; 74 break; 75 case UNIPHIER_BOOT_MASTER_EXT: 76 INFO("Booting from external SCP\n"); 77 skip_scp = 1; 78 break; 79 default: 80 plat_error_handler(-ENOTSUP); 81 } 82 83 if (!skip_scp) { 84 ret = uniphier_check_image(SCP_BL2_IMAGE_ID); 85 if (ret) { 86 WARN("SCP_BL2 image not found. SCP_BL2 load will be skipped.\n"); 87 WARN("You must setup SCP by other means.\n"); 88 skip_scp = 1; 89 uniphier_bl2_kick_scp = 0; 90 } 91 } 92 93 if (skip_scp) 94 uniphier_image_descs_fixup(); 95 } 96 bl2_platform_setup(void)97void bl2_platform_setup(void) 98 { 99 } 100 plat_flush_next_bl_params(void)101void plat_flush_next_bl_params(void) 102 { 103 flush_bl_params_desc(); 104 } 105 plat_get_bl_image_load_info(void)106bl_load_info_t *plat_get_bl_image_load_info(void) 107 { 108 return get_bl_load_info_from_mem_params_desc(); 109 } 110 plat_get_next_bl_params(void)111bl_params_t *plat_get_next_bl_params(void) 112 { 113 return get_next_bl_params_from_mem_params_desc(); 114 } 115 bl2_plat_handle_post_image_load(unsigned int image_id)116int bl2_plat_handle_post_image_load(unsigned int image_id) 117 { 118 if (image_id == SCP_BL2_IMAGE_ID && uniphier_bl2_kick_scp) 119 uniphier_scp_start(); 120 121 return 0; 122 } 123