1 /* 2 * Copyright (c) 2019, ARM Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #include <assert.h> 8 #include <common/bl_common.h> 9 #include <common/interrupt_props.h> 10 #include <drivers/arm/gicv2.h> 11 #include <lib/mmio.h> 12 #include <lib/xlat_tables/xlat_mmu_helpers.h> 13 #include <plat/common/platform.h> 14 #include <platform_def.h> 15 16 #include "aml_private.h" 17 18 /* 19 * Placeholder variables for copying the arguments that have been passed to 20 * BL31 from BL2. 21 */ 22 static entry_point_info_t bl32_image_ep_info; 23 static entry_point_info_t bl33_image_ep_info; 24 static image_info_t bl30_image_info; 25 static image_info_t bl301_image_info; 26 27 /******************************************************************************* 28 * Return a pointer to the 'entry_point_info' structure of the next image for 29 * the security state specified. BL33 corresponds to the non-secure image type 30 * while BL32 corresponds to the secure image type. A NULL pointer is returned 31 * if the image does not exist. 32 ******************************************************************************/ 33 entry_point_info_t *bl31_plat_get_next_image_ep_info(uint32_t type) 34 { 35 entry_point_info_t *next_image_info; 36 37 next_image_info = (type == NON_SECURE) ? 38 &bl33_image_ep_info : &bl32_image_ep_info; 39 40 /* None of the images can have 0x0 as the entrypoint. */ 41 if (next_image_info->pc != 0U) 42 return next_image_info; 43 44 return NULL; 45 } 46 47 /******************************************************************************* 48 * Perform any BL31 early platform setup. Here is an opportunity to copy 49 * parameters passed by the calling EL (S-EL1 in BL2 & S-EL3 in BL1) before 50 * they are lost (potentially). This needs to be done before the MMU is 51 * initialized so that the memory layout can be used while creating page 52 * tables. BL2 has flushed this information to memory, so we are guaranteed 53 * to pick up good data. 54 ******************************************************************************/ 55 struct g12a_bl31_param { 56 param_header_t h; 57 image_info_t *bl31_image_info; 58 entry_point_info_t *bl32_ep_info; 59 image_info_t *bl32_image_info; 60 entry_point_info_t *bl33_ep_info; 61 image_info_t *bl33_image_info; 62 image_info_t *scp_image_info[]; 63 }; 64 65 void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1, 66 u_register_t arg2, u_register_t arg3) 67 { 68 struct g12a_bl31_param *from_bl2; 69 70 /* Initialize the console to provide early debug support */ 71 aml_console_init(); 72 73 from_bl2 = (struct g12a_bl31_param *)arg0; 74 75 /* Check params passed from BL2 are not NULL. */ 76 assert(from_bl2 != NULL); 77 assert(from_bl2->h.type == PARAM_BL31); 78 assert(from_bl2->h.version >= VERSION_1); 79 80 /* 81 * Copy BL32 and BL33 entry point information. It is stored in Secure 82 * RAM, in BL2's address space. 83 */ 84 bl32_image_ep_info = *from_bl2->bl32_ep_info; 85 bl33_image_ep_info = *from_bl2->bl33_ep_info; 86 87 if (bl33_image_ep_info.pc == 0U) { 88 ERROR("BL31: BL33 entrypoint not obtained from BL2\n"); 89 panic(); 90 } 91 92 bl30_image_info = *from_bl2->scp_image_info[0]; 93 bl301_image_info = *from_bl2->scp_image_info[1]; 94 } 95 96 void bl31_plat_arch_setup(void) 97 { 98 aml_setup_page_tables(); 99 100 enable_mmu_el3(0); 101 } 102 103 /******************************************************************************* 104 * GICv2 driver setup information 105 ******************************************************************************/ 106 static const interrupt_prop_t g12a_interrupt_props[] = { 107 INTR_PROP_DESC(IRQ_SEC_PHY_TIMER, GIC_HIGHEST_SEC_PRIORITY, 108 GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL), 109 INTR_PROP_DESC(IRQ_SEC_SGI_0, GIC_HIGHEST_SEC_PRIORITY, 110 GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL), 111 INTR_PROP_DESC(IRQ_SEC_SGI_1, GIC_HIGHEST_SEC_PRIORITY, 112 GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL), 113 INTR_PROP_DESC(IRQ_SEC_SGI_2, GIC_HIGHEST_SEC_PRIORITY, 114 GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL), 115 INTR_PROP_DESC(IRQ_SEC_SGI_3, GIC_HIGHEST_SEC_PRIORITY, 116 GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL), 117 INTR_PROP_DESC(IRQ_SEC_SGI_4, GIC_HIGHEST_SEC_PRIORITY, 118 GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL), 119 INTR_PROP_DESC(IRQ_SEC_SGI_5, GIC_HIGHEST_SEC_PRIORITY, 120 GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL), 121 INTR_PROP_DESC(IRQ_SEC_SGI_6, GIC_HIGHEST_SEC_PRIORITY, 122 GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL), 123 INTR_PROP_DESC(IRQ_SEC_SGI_7, GIC_HIGHEST_SEC_PRIORITY, 124 GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL) 125 }; 126 127 static const gicv2_driver_data_t g12a_gic_data = { 128 .gicd_base = AML_GICD_BASE, 129 .gicc_base = AML_GICC_BASE, 130 .interrupt_props = g12a_interrupt_props, 131 .interrupt_props_num = ARRAY_SIZE(g12a_interrupt_props) 132 }; 133 134 void bl31_platform_setup(void) 135 { 136 aml_mhu_secure_init(); 137 138 gicv2_driver_init(&g12a_gic_data); 139 gicv2_distif_init(); 140 gicv2_pcpu_distif_init(); 141 gicv2_cpuif_enable(); 142 } 143