1 /* 2 * Copyright 2019-2022 NXP 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #include <assert.h> 8 #include <stdbool.h> 9 10 #include <arch_helpers.h> 11 #include <common/bl_common.h> 12 #include <common/debug.h> 13 #include <context.h> 14 #include <drivers/arm/tzc380.h> 15 #include <drivers/console.h> 16 #include <drivers/generic_delay_timer.h> 17 #include <lib/el3_runtime/context_mgmt.h> 18 #include <lib/mmio.h> 19 #include <lib/xlat_tables/xlat_tables_v2.h> 20 #include <plat/common/platform.h> 21 22 #include <dram.h> 23 #include <gpc.h> 24 #include <imx_aipstz.h> 25 #include <imx_uart.h> 26 #include <imx_rdc.h> 27 #include <imx8m_caam.h> 28 #include <imx8m_ccm.h> 29 #include <imx8m_csu.h> 30 #include <imx8m_snvs.h> 31 #include <platform_def.h> 32 #include <plat_imx8.h> 33 34 #define TRUSTY_PARAMS_LEN_BYTES (4096*2) 35 36 static const mmap_region_t imx_mmap[] = { 37 GIC_MAP, AIPS_MAP, OCRAM_S_MAP, DDRC_MAP, 38 CAAM_RAM_MAP, NS_OCRAM_MAP, ROM_MAP, DRAM_MAP, 39 {0}, 40 }; 41 42 static const struct aipstz_cfg aipstz[] = { 43 {IMX_AIPSTZ1, 0x77777777, 0x77777777, .opacr = {0x0, 0x0, 0x0, 0x0, 0x0}, }, 44 {IMX_AIPSTZ2, 0x77777777, 0x77777777, .opacr = {0x0, 0x0, 0x0, 0x0, 0x0}, }, 45 {IMX_AIPSTZ3, 0x77777777, 0x77777777, .opacr = {0x0, 0x0, 0x0, 0x0, 0x0}, }, 46 {IMX_AIPSTZ4, 0x77777777, 0x77777777, .opacr = {0x0, 0x0, 0x0, 0x0, 0x0}, }, 47 {0}, 48 }; 49 50 static const struct imx_rdc_cfg rdc[] = { 51 /* Master domain assignment */ 52 RDC_MDAn(RDC_MDA_M7, DID1), 53 54 /* peripherals domain permission */ 55 RDC_PDAPn(RDC_PDAP_UART4, D1R | D1W), 56 RDC_PDAPn(RDC_PDAP_UART2, D0R | D0W), 57 58 /* memory region */ 59 RDC_MEM_REGIONn(16, 0x0, 0x0, 0xff), 60 RDC_MEM_REGIONn(17, 0x0, 0x0, 0xff), 61 RDC_MEM_REGIONn(18, 0x0, 0x0, 0xff), 62 63 /* Sentinel */ 64 {0}, 65 }; 66 67 static const struct imx_csu_cfg csu_cfg[] = { 68 /* peripherals csl setting */ 69 CSU_CSLx(CSU_CSL_OCRAM, CSU_SEC_LEVEL_2, UNLOCKED), 70 CSU_CSLx(CSU_CSL_OCRAM_S, CSU_SEC_LEVEL_2, UNLOCKED), 71 72 /* master HP0~1 */ 73 74 /* SA setting */ 75 76 /* HP control setting */ 77 78 /* Sentinel */ 79 {0} 80 }; 81 82 83 static entry_point_info_t bl32_image_ep_info; 84 static entry_point_info_t bl33_image_ep_info; 85 86 /* get SPSR for BL33 entry */ 87 static uint32_t get_spsr_for_bl33_entry(void) 88 { 89 unsigned long el_status; 90 unsigned long mode; 91 uint32_t spsr; 92 93 /* figure out what mode we enter the non-secure world */ 94 el_status = read_id_aa64pfr0_el1() >> ID_AA64PFR0_EL2_SHIFT; 95 el_status &= ID_AA64PFR0_ELX_MASK; 96 97 mode = (el_status) ? MODE_EL2 : MODE_EL1; 98 99 spsr = SPSR_64(mode, MODE_SP_ELX, DISABLE_ALL_EXCEPTIONS); 100 return spsr; 101 } 102 103 static void bl31_tzc380_setup(void) 104 { 105 unsigned int val; 106 107 val = mmio_read_32(IMX_IOMUX_GPR_BASE + 0x28); 108 if ((val & GPR_TZASC_EN) != GPR_TZASC_EN) 109 return; 110 111 tzc380_init(IMX_TZASC_BASE); 112 113 /* 114 * Need to substact offset 0x40000000 from CPU address when 115 * programming tzasc region for i.mx8mn. 116 */ 117 118 /* Enable 1G-5G S/NS RW */ 119 tzc380_configure_region(0, 0x00000000, TZC_ATTR_REGION_SIZE(TZC_REGION_SIZE_4G) | 120 TZC_ATTR_REGION_EN_MASK | TZC_ATTR_SP_ALL); 121 } 122 123 void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1, 124 u_register_t arg2, u_register_t arg3) 125 { 126 unsigned int console_base = IMX_BOOT_UART_BASE; 127 static console_t console; 128 unsigned int val; 129 int i; 130 131 /* Enable CSU NS access permission */ 132 for (i = 0; i < 64; i++) { 133 mmio_write_32(IMX_CSU_BASE + i * 4, 0x00ff00ff); 134 } 135 136 imx_aipstz_init(aipstz); 137 138 imx_rdc_init(rdc); 139 140 imx_csu_init(csu_cfg); 141 142 /* config the ocram memory range for secure access */ 143 mmio_write_32(IMX_IOMUX_GPR_BASE + 0x2c, 0x4c1); 144 val = mmio_read_32(IMX_IOMUX_GPR_BASE + 0x2c); 145 mmio_write_32(IMX_IOMUX_GPR_BASE + 0x2c, val | 0x3DFF0000); 146 147 if (console_base == 0U) { 148 console_base = imx8m_uart_get_base(); 149 } 150 151 console_imx_uart_register(console_base, IMX_BOOT_UART_CLK_IN_HZ, 152 IMX_CONSOLE_BAUDRATE, &console); 153 /* This console is only used for boot stage */ 154 console_set_scope(&console, CONSOLE_FLAG_BOOT); 155 156 imx8m_caam_init(); 157 158 /* 159 * tell BL3-1 where the non-secure software image is located 160 * and the entry state information. 161 */ 162 bl33_image_ep_info.pc = PLAT_NS_IMAGE_OFFSET; 163 bl33_image_ep_info.spsr = get_spsr_for_bl33_entry(); 164 SET_SECURITY_STATE(bl33_image_ep_info.h.attr, NON_SECURE); 165 166 #if defined(SPD_opteed) || defined(SPD_trusty) 167 /* Populate entry point information for BL32 */ 168 SET_PARAM_HEAD(&bl32_image_ep_info, PARAM_EP, VERSION_1, 0); 169 SET_SECURITY_STATE(bl32_image_ep_info.h.attr, SECURE); 170 bl32_image_ep_info.pc = BL32_BASE; 171 bl32_image_ep_info.spsr = 0; 172 173 /* Pass TEE base and size to bl33 */ 174 bl33_image_ep_info.args.arg1 = BL32_BASE; 175 bl33_image_ep_info.args.arg2 = BL32_SIZE; 176 177 #ifdef SPD_trusty 178 bl32_image_ep_info.args.arg0 = BL32_SIZE; 179 bl32_image_ep_info.args.arg1 = BL32_BASE; 180 #else 181 /* Make sure memory is clean */ 182 mmio_write_32(BL32_FDT_OVERLAY_ADDR, 0); 183 bl33_image_ep_info.args.arg3 = BL32_FDT_OVERLAY_ADDR; 184 bl32_image_ep_info.args.arg3 = BL32_FDT_OVERLAY_ADDR; 185 #endif 186 #endif 187 188 #if !defined(SPD_opteed) && !defined(SPD_trusty) 189 enable_snvs_privileged_access(); 190 #endif 191 192 bl31_tzc380_setup(); 193 } 194 195 #define MAP_BL31_TOTAL \ 196 MAP_REGION_FLAT(BL31_START, BL31_SIZE, MT_MEMORY | MT_RW | MT_SECURE) 197 #define MAP_BL31_RO \ 198 MAP_REGION_FLAT(BL_CODE_BASE, BL_CODE_END - BL_CODE_BASE, MT_MEMORY | MT_RO | MT_SECURE) 199 #define MAP_COHERENT_MEM \ 200 MAP_REGION_FLAT(BL_COHERENT_RAM_BASE, BL_COHERENT_RAM_END - BL_COHERENT_RAM_BASE, \ 201 MT_DEVICE | MT_RW | MT_SECURE) 202 #define MAP_BL32_TOTAL \ 203 MAP_REGION_FLAT(BL32_BASE, BL32_SIZE, MT_MEMORY | MT_RW) 204 205 void bl31_plat_arch_setup(void) 206 { 207 const mmap_region_t bl_regions[] = { 208 MAP_BL31_TOTAL, 209 MAP_BL31_RO, 210 #if USE_COHERENT_MEM 211 MAP_COHERENT_MEM, 212 #endif 213 /* Map TEE memory */ 214 MAP_BL32_TOTAL, 215 {0} 216 }; 217 218 setup_page_tables(bl_regions, imx_mmap); 219 enable_mmu_el3(0); 220 } 221 222 void bl31_platform_setup(void) 223 { 224 generic_delay_timer_init(); 225 226 /* select the CKIL source to 32K OSC */ 227 mmio_write_32(IMX_ANAMIX_BASE + ANAMIX_MISC_CTL, 0x1); 228 229 /* Init the dram info */ 230 dram_info_init(SAVED_DRAM_TIMING_BASE); 231 232 plat_gic_driver_init(); 233 plat_gic_init(); 234 235 imx_gpc_init(); 236 } 237 238 entry_point_info_t *bl31_plat_get_next_image_ep_info(unsigned int type) 239 { 240 if (type == NON_SECURE) 241 return &bl33_image_ep_info; 242 if (type == SECURE) 243 return &bl32_image_ep_info; 244 245 return NULL; 246 } 247 248 unsigned int plat_get_syscnt_freq2(void) 249 { 250 return COUNTER_FREQUENCY; 251 } 252 253 #ifdef SPD_trusty 254 void plat_trusty_set_boot_args(aapcs64_params_t *args) 255 { 256 args->arg0 = BL32_SIZE; 257 args->arg1 = BL32_BASE; 258 args->arg2 = TRUSTY_PARAMS_LEN_BYTES; 259 } 260 #endif 261