1 /* 2 * Copyright (c) 2015, Linaro Limited 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 11 * 2. Redistributions in binary form must reproduce the above copyright notice, 12 * this list of conditions and the following disclaimer in the documentation 13 * and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25 * POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include <platform_config.h> 29 #include <console.h> 30 #include <stdint.h> 31 #include <string.h> 32 #include <assert.h> 33 #include <drivers/gic.h> 34 #include <drivers/serial8250_uart.h> 35 #include <arm.h> 36 #include <kernel/generic_boot.h> 37 #include <kernel/panic.h> 38 #include <kernel/pm_stubs.h> 39 #include <trace.h> 40 #include <kernel/misc.h> 41 #include <kernel/mutex.h> 42 #include <kernel/tee_time.h> 43 #include <mm/core_mmu.h> 44 #include <mm/core_memprot.h> 45 #include <tee/entry_std.h> 46 #include <tee/entry_fast.h> 47 #include <console.h> 48 #include <sm/sm.h> 49 50 #define PLAT_HW_UNIQUE_KEY_LENGTH 32 51 52 static struct gic_data gic_data; 53 static struct serial8250_uart_data console_data __early_bss; 54 static uint8_t plat_huk[PLAT_HW_UNIQUE_KEY_LENGTH]; 55 56 register_phys_mem(MEM_AREA_IO_SEC, SECRAM_BASE, SECRAM_SIZE); 57 register_phys_mem(MEM_AREA_IO_SEC, GICC_BASE, GICC_SIZE); 58 register_phys_mem(MEM_AREA_IO_SEC, GICD_BASE, GICD_SIZE); 59 register_phys_mem(MEM_AREA_IO_NSEC, CONSOLE_UART_BASE, 60 SERIAL8250_UART_REG_SIZE); 61 62 register_phys_mem(MEM_AREA_IO_SEC, 63 ROUNDDOWN(SECRAM_BASE, CORE_MMU_DEVICE_SIZE), 64 CORE_MMU_DEVICE_SIZE); 65 66 void main_init_gic(void) 67 { 68 vaddr_t gicc_base; 69 vaddr_t gicd_base; 70 71 gicc_base = (vaddr_t)phys_to_virt(GICC_BASE, MEM_AREA_IO_SEC); 72 gicd_base = (vaddr_t)phys_to_virt(GICD_BASE, MEM_AREA_IO_SEC); 73 74 if (!gicc_base || !gicd_base) 75 panic(); 76 77 gic_init(&gic_data, gicc_base, gicd_base); 78 itr_init(&gic_data.chip); 79 } 80 81 void main_secondary_init_gic(void) 82 { 83 gic_cpu_init(&gic_data); 84 } 85 86 static void main_fiq(void) 87 { 88 gic_it_handle(&gic_data); 89 } 90 91 static const struct thread_handlers handlers = { 92 .std_smc = tee_entry_std, 93 .fast_smc = tee_entry_fast, 94 .nintr = main_fiq, 95 .cpu_on = pm_panic, 96 .cpu_off = pm_panic, 97 .cpu_suspend = pm_panic, 98 .cpu_resume = pm_panic, 99 .system_off = pm_panic, 100 .system_reset = pm_panic, 101 }; 102 103 const struct thread_handlers *generic_boot_get_handlers(void) 104 { 105 return &handlers; 106 } 107 108 struct plat_nsec_ctx { 109 uint32_t usr_sp; 110 uint32_t usr_lr; 111 uint32_t svc_sp; 112 uint32_t svc_lr; 113 uint32_t svc_spsr; 114 uint32_t abt_sp; 115 uint32_t abt_lr; 116 uint32_t abt_spsr; 117 uint32_t und_sp; 118 uint32_t und_lr; 119 uint32_t und_spsr; 120 uint32_t irq_sp; 121 uint32_t irq_lr; 122 uint32_t irq_spsr; 123 uint32_t fiq_sp; 124 uint32_t fiq_lr; 125 uint32_t fiq_spsr; 126 uint32_t fiq_rx[5]; 127 uint32_t mon_lr; 128 uint32_t mon_spsr; 129 }; 130 131 struct plat_boot_args { 132 struct plat_nsec_ctx nsec_ctx; 133 uint8_t huk[PLAT_HW_UNIQUE_KEY_LENGTH]; 134 }; 135 136 void init_sec_mon(unsigned long nsec_entry) 137 { 138 struct plat_boot_args *plat_boot_args; 139 struct sm_nsec_ctx *nsec_ctx; 140 141 plat_boot_args = phys_to_virt(nsec_entry, MEM_AREA_IO_SEC); 142 if (!plat_boot_args) 143 panic(); 144 145 /* Invalidate cache to fetch data from external memory */ 146 cache_op_inner(DCACHE_AREA_INVALIDATE, 147 plat_boot_args, sizeof(*plat_boot_args)); 148 149 /* Initialize secure monitor */ 150 nsec_ctx = sm_get_nsec_ctx(); 151 152 nsec_ctx->mode_regs.usr_sp = plat_boot_args->nsec_ctx.usr_sp; 153 nsec_ctx->mode_regs.usr_lr = plat_boot_args->nsec_ctx.usr_lr; 154 nsec_ctx->mode_regs.irq_spsr = plat_boot_args->nsec_ctx.irq_spsr; 155 nsec_ctx->mode_regs.irq_sp = plat_boot_args->nsec_ctx.irq_sp; 156 nsec_ctx->mode_regs.irq_lr = plat_boot_args->nsec_ctx.irq_lr; 157 nsec_ctx->mode_regs.svc_spsr = plat_boot_args->nsec_ctx.svc_spsr; 158 nsec_ctx->mode_regs.svc_sp = plat_boot_args->nsec_ctx.svc_sp; 159 nsec_ctx->mode_regs.svc_lr = plat_boot_args->nsec_ctx.svc_lr; 160 nsec_ctx->mode_regs.abt_spsr = plat_boot_args->nsec_ctx.abt_spsr; 161 nsec_ctx->mode_regs.abt_sp = plat_boot_args->nsec_ctx.abt_sp; 162 nsec_ctx->mode_regs.abt_lr = plat_boot_args->nsec_ctx.abt_lr; 163 nsec_ctx->mode_regs.und_spsr = plat_boot_args->nsec_ctx.und_spsr; 164 nsec_ctx->mode_regs.und_sp = plat_boot_args->nsec_ctx.und_sp; 165 nsec_ctx->mode_regs.und_lr = plat_boot_args->nsec_ctx.und_lr; 166 nsec_ctx->mon_lr = plat_boot_args->nsec_ctx.mon_lr; 167 nsec_ctx->mon_spsr = plat_boot_args->nsec_ctx.mon_spsr; 168 169 memcpy(plat_huk, plat_boot_args->huk, sizeof(plat_boot_args->huk)); 170 } 171 172 void console_init(void) 173 { 174 serial8250_uart_init(&console_data, CONSOLE_UART_BASE, 175 CONSOLE_UART_CLK_IN_HZ, CONSOLE_BAUDRATE); 176 register_serial_console(&console_data.chip); 177 } 178