Soby Mathew | 7b75418 | 2016-07-11 14:15:27 +0100 | [diff] [blame] | 1 | /* |
Soby Mathew | 7d5a2e7 | 2018-01-10 15:59:31 +0000 | [diff] [blame] | 2 | * Copyright (c) 2016-2018, ARM Limited and Contributors. All rights reserved. |
Soby Mathew | 7b75418 | 2016-07-11 14:15:27 +0100 | [diff] [blame] | 3 | * |
dp-arm | fa3cf0b | 2017-05-03 09:38:09 +0100 | [diff] [blame] | 4 | * SPDX-License-Identifier: BSD-3-Clause |
Soby Mathew | 7b75418 | 2016-07-11 14:15:27 +0100 | [diff] [blame] | 5 | */ |
| 6 | |
| 7 | #include <assert.h> |
Antonio Nino Diaz | e0b757d | 2018-08-24 16:30:29 +0100 | [diff] [blame] | 8 | #include <bl_common.h> |
Soby Mathew | 7b75418 | 2016-07-11 14:15:27 +0100 | [diff] [blame] | 9 | #include <console.h> |
Yatharth Kochar | 1c16a4c | 2016-06-30 14:50:58 +0100 | [diff] [blame] | 10 | #include <debug.h> |
Soby Mathew | 7b75418 | 2016-07-11 14:15:27 +0100 | [diff] [blame] | 11 | #include <mmio.h> |
Daniel Boulby | 05e7f56 | 2018-09-19 13:58:20 +0100 | [diff] [blame] | 12 | #include <pl011.h> |
Soby Mathew | 7b75418 | 2016-07-11 14:15:27 +0100 | [diff] [blame] | 13 | #include <plat_arm.h> |
| 14 | #include <platform.h> |
| 15 | #include <platform_def.h> |
| 16 | #include <platform_sp_min.h> |
| 17 | |
Soby Mathew | 7b75418 | 2016-07-11 14:15:27 +0100 | [diff] [blame] | 18 | static entry_point_info_t bl33_image_ep_info; |
| 19 | |
| 20 | /* Weak definitions may be overridden in specific ARM standard platform */ |
Soby Mathew | 7b75418 | 2016-07-11 14:15:27 +0100 | [diff] [blame] | 21 | #pragma weak sp_min_platform_setup |
| 22 | #pragma weak sp_min_plat_arch_setup |
Soby Mathew | 6d07e67 | 2018-03-01 10:53:33 +0000 | [diff] [blame] | 23 | #pragma weak plat_arm_sp_min_early_platform_setup |
Soby Mathew | 7b75418 | 2016-07-11 14:15:27 +0100 | [diff] [blame] | 24 | |
Daniel Boulby | 45a2c9e | 2018-07-06 16:54:44 +0100 | [diff] [blame] | 25 | #define MAP_BL_SP_MIN_TOTAL MAP_REGION_FLAT( \ |
| 26 | BL32_BASE, \ |
| 27 | BL32_END - BL32_BASE, \ |
| 28 | MT_MEMORY | MT_RW | MT_SECURE) |
| 29 | |
Soby Mathew | af14b46 | 2018-06-01 16:53:38 +0100 | [diff] [blame] | 30 | /* |
| 31 | * Check that BL32_BASE is above ARM_TB_FW_CONFIG_LIMIT. The reserved page |
| 32 | * is required for SOC_FW_CONFIG/TOS_FW_CONFIG passed from BL2. |
| 33 | */ |
| 34 | CASSERT(BL32_BASE >= ARM_TB_FW_CONFIG_LIMIT, assert_bl32_base_overflows); |
Soby Mathew | 7b75418 | 2016-07-11 14:15:27 +0100 | [diff] [blame] | 35 | |
| 36 | /******************************************************************************* |
| 37 | * Return a pointer to the 'entry_point_info' structure of the next image for the |
| 38 | * security state specified. BL33 corresponds to the non-secure image type |
| 39 | * while BL32 corresponds to the secure image type. A NULL pointer is returned |
| 40 | * if the image does not exist. |
| 41 | ******************************************************************************/ |
| 42 | entry_point_info_t *sp_min_plat_get_bl33_ep_info(void) |
| 43 | { |
| 44 | entry_point_info_t *next_image_info; |
| 45 | |
| 46 | next_image_info = &bl33_image_ep_info; |
| 47 | |
| 48 | /* |
| 49 | * None of the images on the ARM development platforms can have 0x0 |
| 50 | * as the entrypoint |
| 51 | */ |
| 52 | if (next_image_info->pc) |
| 53 | return next_image_info; |
| 54 | else |
| 55 | return NULL; |
| 56 | } |
| 57 | |
| 58 | /******************************************************************************* |
Soby Mathew | 6d07e67 | 2018-03-01 10:53:33 +0000 | [diff] [blame] | 59 | * Utility function to perform early platform setup. |
Soby Mathew | 7b75418 | 2016-07-11 14:15:27 +0100 | [diff] [blame] | 60 | ******************************************************************************/ |
Soby Mathew | 7d5a2e7 | 2018-01-10 15:59:31 +0000 | [diff] [blame] | 61 | void arm_sp_min_early_platform_setup(void *from_bl2, uintptr_t tos_fw_config, |
| 62 | uintptr_t hw_config, void *plat_params_from_bl2) |
Soby Mathew | 7b75418 | 2016-07-11 14:15:27 +0100 | [diff] [blame] | 63 | { |
| 64 | /* Initialize the console to provide early debug support */ |
Daniel Boulby | 05e7f56 | 2018-09-19 13:58:20 +0100 | [diff] [blame] | 65 | arm_console_boot_init(); |
Soby Mathew | 7b75418 | 2016-07-11 14:15:27 +0100 | [diff] [blame] | 66 | |
Yatharth Kochar | 1c16a4c | 2016-06-30 14:50:58 +0100 | [diff] [blame] | 67 | #if RESET_TO_SP_MIN |
| 68 | /* There are no parameters from BL2 if SP_MIN is a reset vector */ |
| 69 | assert(from_bl2 == NULL); |
| 70 | assert(plat_params_from_bl2 == NULL); |
| 71 | |
Soby Mathew | 7b75418 | 2016-07-11 14:15:27 +0100 | [diff] [blame] | 72 | /* Populate entry point information for BL33 */ |
| 73 | SET_PARAM_HEAD(&bl33_image_ep_info, |
| 74 | PARAM_EP, |
| 75 | VERSION_1, |
| 76 | 0); |
| 77 | /* |
| 78 | * Tell SP_MIN where the non-trusted software image |
| 79 | * is located and the entry state information |
| 80 | */ |
Soby Mathew | 7b75418 | 2016-07-11 14:15:27 +0100 | [diff] [blame] | 81 | bl33_image_ep_info.pc = plat_get_ns_image_entrypoint(); |
Soby Mathew | 7b75418 | 2016-07-11 14:15:27 +0100 | [diff] [blame] | 82 | bl33_image_ep_info.spsr = arm_get_spsr_for_bl33_entry(); |
| 83 | SET_SECURITY_STATE(bl33_image_ep_info.h.attr, NON_SECURE); |
Yatharth Kochar | 1c16a4c | 2016-06-30 14:50:58 +0100 | [diff] [blame] | 84 | |
Manish Pandey | 37c4ec2 | 2018-11-02 13:28:25 +0000 | [diff] [blame] | 85 | # if ARM_LINUX_KERNEL_AS_BL33 |
| 86 | /* |
| 87 | * According to the file ``Documentation/arm/Booting`` of the Linux |
| 88 | * kernel tree, Linux expects: |
| 89 | * r0 = 0 |
| 90 | * r1 = machine type number, optional in DT-only platforms (~0 if so) |
| 91 | * r2 = Physical address of the device tree blob |
| 92 | */ |
| 93 | bl33_image_ep_info.args.arg0 = 0U; |
| 94 | bl33_image_ep_info.args.arg1 = ~0U; |
| 95 | bl33_image_ep_info.args.arg2 = (u_register_t)ARM_PRELOADED_DTB_BASE; |
| 96 | # endif |
| 97 | |
Yatharth Kochar | 1c16a4c | 2016-06-30 14:50:58 +0100 | [diff] [blame] | 98 | #else /* RESET_TO_SP_MIN */ |
| 99 | |
| 100 | /* |
| 101 | * Check params passed from BL2 should not be NULL, |
| 102 | */ |
| 103 | bl_params_t *params_from_bl2 = (bl_params_t *)from_bl2; |
| 104 | assert(params_from_bl2 != NULL); |
| 105 | assert(params_from_bl2->h.type == PARAM_BL_PARAMS); |
| 106 | assert(params_from_bl2->h.version >= VERSION_2); |
| 107 | |
| 108 | bl_params_node_t *bl_params = params_from_bl2->head; |
| 109 | |
| 110 | /* |
| 111 | * Copy BL33 entry point information. |
| 112 | * They are stored in Secure RAM, in BL2's address space. |
| 113 | */ |
| 114 | while (bl_params) { |
| 115 | if (bl_params->image_id == BL33_IMAGE_ID) { |
| 116 | bl33_image_ep_info = *bl_params->ep_info; |
| 117 | break; |
| 118 | } |
| 119 | |
| 120 | bl_params = bl_params->next_params_info; |
| 121 | } |
| 122 | |
| 123 | if (bl33_image_ep_info.pc == 0) |
| 124 | panic(); |
| 125 | |
| 126 | #endif /* RESET_TO_SP_MIN */ |
| 127 | |
Soby Mathew | 7b75418 | 2016-07-11 14:15:27 +0100 | [diff] [blame] | 128 | } |
| 129 | |
Soby Mathew | 6d07e67 | 2018-03-01 10:53:33 +0000 | [diff] [blame] | 130 | /******************************************************************************* |
| 131 | * Default implementation for sp_min_platform_setup2() for ARM platforms |
| 132 | ******************************************************************************/ |
| 133 | void plat_arm_sp_min_early_platform_setup(u_register_t arg0, u_register_t arg1, |
Soby Mathew | 7d5a2e7 | 2018-01-10 15:59:31 +0000 | [diff] [blame] | 134 | u_register_t arg2, u_register_t arg3) |
Soby Mathew | 7b75418 | 2016-07-11 14:15:27 +0100 | [diff] [blame] | 135 | { |
Soby Mathew | 7d5a2e7 | 2018-01-10 15:59:31 +0000 | [diff] [blame] | 136 | arm_sp_min_early_platform_setup((void *)arg0, arg1, arg2, (void *)arg3); |
Soby Mathew | 7b75418 | 2016-07-11 14:15:27 +0100 | [diff] [blame] | 137 | |
| 138 | /* |
| 139 | * Initialize Interconnect for this cluster during cold boot. |
| 140 | * No need for locks as no other CPU is active. |
| 141 | */ |
| 142 | plat_arm_interconnect_init(); |
| 143 | |
| 144 | /* |
| 145 | * Enable Interconnect coherency for the primary CPU's cluster. |
| 146 | * Earlier bootloader stages might already do this (e.g. Trusted |
| 147 | * Firmware's BL1 does it) but we can't assume so. There is no harm in |
| 148 | * executing this code twice anyway. |
| 149 | * Platform specific PSCI code will enable coherency for other |
| 150 | * clusters. |
| 151 | */ |
| 152 | plat_arm_interconnect_enter_coherency(); |
| 153 | } |
| 154 | |
Soby Mathew | 6d07e67 | 2018-03-01 10:53:33 +0000 | [diff] [blame] | 155 | void sp_min_early_platform_setup2(u_register_t arg0, u_register_t arg1, |
| 156 | u_register_t arg2, u_register_t arg3) |
| 157 | { |
| 158 | plat_arm_sp_min_early_platform_setup(arg0, arg1, arg2, arg3); |
| 159 | } |
| 160 | |
Soby Mathew | 7b75418 | 2016-07-11 14:15:27 +0100 | [diff] [blame] | 161 | /******************************************************************************* |
Dimitris Papastamos | 52323b0 | 2017-06-07 13:45:41 +0100 | [diff] [blame] | 162 | * Perform any SP_MIN platform runtime setup prior to SP_MIN exit. |
| 163 | * Common to ARM standard platforms. |
| 164 | ******************************************************************************/ |
| 165 | void arm_sp_min_plat_runtime_setup(void) |
| 166 | { |
| 167 | /* Initialize the runtime console */ |
Daniel Boulby | 05e7f56 | 2018-09-19 13:58:20 +0100 | [diff] [blame] | 168 | arm_console_runtime_init(); |
Dimitris Papastamos | 52323b0 | 2017-06-07 13:45:41 +0100 | [diff] [blame] | 169 | } |
| 170 | |
| 171 | /******************************************************************************* |
Soby Mathew | 7b75418 | 2016-07-11 14:15:27 +0100 | [diff] [blame] | 172 | * Perform platform specific setup for SP_MIN |
| 173 | ******************************************************************************/ |
| 174 | void sp_min_platform_setup(void) |
| 175 | { |
| 176 | /* Initialize the GIC driver, cpu and distributor interfaces */ |
| 177 | plat_arm_gic_driver_init(); |
| 178 | plat_arm_gic_init(); |
| 179 | |
| 180 | /* |
| 181 | * Do initial security configuration to allow DRAM/device access |
| 182 | * (if earlier BL has not already done so). |
Soby Mathew | 7b75418 | 2016-07-11 14:15:27 +0100 | [diff] [blame] | 183 | */ |
Yatharth Kochar | 1c16a4c | 2016-06-30 14:50:58 +0100 | [diff] [blame] | 184 | #if RESET_TO_SP_MIN |
Soby Mathew | 7b75418 | 2016-07-11 14:15:27 +0100 | [diff] [blame] | 185 | plat_arm_security_setup(); |
Roberto Vargas | 550eb08 | 2018-01-05 16:00:05 +0000 | [diff] [blame] | 186 | |
| 187 | #if defined(PLAT_ARM_MEM_PROT_ADDR) |
| 188 | arm_nor_psci_do_dyn_mem_protect(); |
| 189 | #endif /* PLAT_ARM_MEM_PROT_ADDR */ |
| 190 | |
Yatharth Kochar | 1c16a4c | 2016-06-30 14:50:58 +0100 | [diff] [blame] | 191 | #endif |
Soby Mathew | 7b75418 | 2016-07-11 14:15:27 +0100 | [diff] [blame] | 192 | |
| 193 | /* Enable and initialize the System level generic timer */ |
| 194 | mmio_write_32(ARM_SYS_CNTCTL_BASE + CNTCR_OFF, |
Antonio Nino Diaz | e0b757d | 2018-08-24 16:30:29 +0100 | [diff] [blame] | 195 | CNTCR_FCREQ(0U) | CNTCR_EN); |
Soby Mathew | 7b75418 | 2016-07-11 14:15:27 +0100 | [diff] [blame] | 196 | |
| 197 | /* Allow access to the System counter timer module */ |
| 198 | arm_configure_sys_timer(); |
| 199 | |
| 200 | /* Initialize power controller before setting up topology */ |
| 201 | plat_arm_pwrc_setup(); |
| 202 | } |
| 203 | |
Dimitris Papastamos | 52323b0 | 2017-06-07 13:45:41 +0100 | [diff] [blame] | 204 | void sp_min_plat_runtime_setup(void) |
| 205 | { |
| 206 | arm_sp_min_plat_runtime_setup(); |
| 207 | } |
| 208 | |
Soby Mathew | 7b75418 | 2016-07-11 14:15:27 +0100 | [diff] [blame] | 209 | /******************************************************************************* |
| 210 | * Perform the very early platform specific architectural setup here. At the |
| 211 | * moment this only initializes the MMU |
| 212 | ******************************************************************************/ |
| 213 | void sp_min_plat_arch_setup(void) |
| 214 | { |
Daniel Boulby | 45a2c9e | 2018-07-06 16:54:44 +0100 | [diff] [blame] | 215 | const mmap_region_t bl_regions[] = { |
| 216 | MAP_BL_SP_MIN_TOTAL, |
Daniel Boulby | 4e97abd | 2018-07-16 14:09:15 +0100 | [diff] [blame] | 217 | ARM_MAP_BL_RO, |
Soby Mathew | 7b75418 | 2016-07-11 14:15:27 +0100 | [diff] [blame] | 218 | #if USE_COHERENT_MEM |
Daniel Boulby | 45a2c9e | 2018-07-06 16:54:44 +0100 | [diff] [blame] | 219 | ARM_MAP_BL_COHERENT_RAM, |
Soby Mathew | 7b75418 | 2016-07-11 14:15:27 +0100 | [diff] [blame] | 220 | #endif |
Daniel Boulby | 45a2c9e | 2018-07-06 16:54:44 +0100 | [diff] [blame] | 221 | {0} |
| 222 | }; |
| 223 | |
Roberto Vargas | 344ff02 | 2018-10-19 16:44:18 +0100 | [diff] [blame] | 224 | setup_page_tables(bl_regions, plat_arm_get_mmap()); |
Soby Mathew | 7b75418 | 2016-07-11 14:15:27 +0100 | [diff] [blame] | 225 | |
Antonio Nino Diaz | 533d3a8 | 2018-08-07 16:35:19 +0100 | [diff] [blame] | 226 | enable_mmu_svc_mon(0); |
Soby Mathew | 7b75418 | 2016-07-11 14:15:27 +0100 | [diff] [blame] | 227 | } |