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 <image_decompress.h> 13 #include <platform.h> 14 #include <platform_def.h> 15 #ifdef UNIPHIER_DECOMPRESS_GZIP 16 #include <tf_gunzip.h> 17 #endif 18 #include <xlat_tables_v2.h> 19 20 #include "uniphier.h" 21 22 #define BL2_END (unsigned long)(&__BL2_END__) 23 #define BL2_SIZE ((BL2_END) - (BL2_BASE)) 24 25 static int uniphier_bl2_kick_scp; 26 27 void bl2_el3_early_platform_setup(u_register_t x0, u_register_t x1, 28 u_register_t x2, u_register_t x3) 29 { 30 uniphier_console_setup(); 31 } 32 33 static const struct mmap_region uniphier_bl2_mmap[] = { 34 /* for BL31, BL32 */ 35 MAP_REGION_FLAT(UNIPHIER_SEC_DRAM_BASE, UNIPHIER_SEC_DRAM_SIZE, 36 MT_MEMORY | MT_RW | MT_SECURE), 37 /* for SCP, BL33 */ 38 MAP_REGION_FLAT(UNIPHIER_NS_DRAM_BASE, UNIPHIER_NS_DRAM_SIZE, 39 MT_MEMORY | MT_RW | MT_NS), 40 { .size = 0 }, 41 }; 42 43 void bl2_el3_plat_arch_setup(void) 44 { 45 unsigned int soc; 46 int skip_scp = 0; 47 int ret; 48 49 uniphier_mmap_setup(BL2_BASE, BL2_SIZE, uniphier_bl2_mmap); 50 enable_mmu_el3(0); 51 52 soc = uniphier_get_soc_id(); 53 if (soc == UNIPHIER_SOC_UNKNOWN) { 54 ERROR("unsupported SoC\n"); 55 plat_error_handler(-ENOTSUP); 56 } 57 58 ret = uniphier_io_setup(soc); 59 if (ret) { 60 ERROR("failed to setup io devices\n"); 61 plat_error_handler(ret); 62 } 63 64 switch (uniphier_get_boot_master(soc)) { 65 case UNIPHIER_BOOT_MASTER_THIS: 66 INFO("Booting from this SoC\n"); 67 skip_scp = 1; 68 break; 69 case UNIPHIER_BOOT_MASTER_SCP: 70 INFO("Booting from on-chip SCP\n"); 71 if (uniphier_scp_is_running()) { 72 INFO("SCP is already running. SCP_BL2 load will be skipped.\n"); 73 skip_scp = 1; 74 } 75 76 /* 77 * SCP must be kicked every time even if it is already running 78 * because it polls this event after the reboot of the backend. 79 */ 80 uniphier_bl2_kick_scp = 1; 81 break; 82 case UNIPHIER_BOOT_MASTER_EXT: 83 INFO("Booting from external SCP\n"); 84 skip_scp = 1; 85 break; 86 default: 87 plat_error_handler(-ENOTSUP); 88 break; 89 } 90 91 if (skip_scp) { 92 struct image_info *image_info; 93 94 image_info = uniphier_get_image_info(SCP_BL2_IMAGE_ID); 95 image_info->h.attr |= IMAGE_ATTRIB_SKIP_LOADING; 96 } 97 } 98 99 void bl2_platform_setup(void) 100 { 101 } 102 103 void plat_flush_next_bl_params(void) 104 { 105 flush_bl_params_desc(); 106 } 107 108 bl_load_info_t *plat_get_bl_image_load_info(void) 109 { 110 return get_bl_load_info_from_mem_params_desc(); 111 } 112 113 bl_params_t *plat_get_next_bl_params(void) 114 { 115 return get_next_bl_params_from_mem_params_desc(); 116 } 117 118 void bl2_plat_preload_setup(void) 119 { 120 #ifdef UNIPHIER_DECOMPRESS_GZIP 121 image_decompress_init(UNIPHIER_IMAGE_BUF_BASE, 122 UNIPHIER_IMAGE_BUF_SIZE, 123 gunzip); 124 #endif 125 } 126 127 int bl2_plat_handle_pre_image_load(unsigned int image_id) 128 { 129 #ifdef UNIPHIER_DECOMPRESS_GZIP 130 image_decompress_prepare(uniphier_get_image_info(image_id)); 131 #endif 132 return 0; 133 } 134 135 int bl2_plat_handle_post_image_load(unsigned int image_id) 136 { 137 #ifdef UNIPHIER_DECOMPRESS_GZIP 138 struct image_info *image_info; 139 int ret; 140 141 image_info = uniphier_get_image_info(image_id); 142 143 if (!(image_info->h.attr & IMAGE_ATTRIB_SKIP_LOADING)) { 144 ret = image_decompress(uniphier_get_image_info(image_id)); 145 if (ret) 146 return ret; 147 } 148 #endif 149 150 if (image_id == SCP_BL2_IMAGE_ID && uniphier_bl2_kick_scp) 151 uniphier_scp_start(); 152 153 return 0; 154 } 155