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 30 #include <stdint.h> 31 #include <string.h> 32 #include <assert.h> 33 #include <drivers/gic.h> 34 #include <arm.h> 35 #include <kernel/generic_boot.h> 36 #include <kernel/panic.h> 37 #include <kernel/pm_stubs.h> 38 #include <trace.h> 39 #include <kernel/misc.h> 40 #include <kernel/mutex.h> 41 #include <kernel/tee_time.h> 42 #include <mm/core_mmu.h> 43 #include <mm/core_memprot.h> 44 #include <tee/entry_std.h> 45 #include <tee/entry_fast.h> 46 #include <console.h> 47 #include <sm/sm.h> 48 49 static void main_fiq(void) 50 { 51 panic(); 52 } 53 54 static const struct thread_handlers handlers = { 55 .std_smc = tee_entry_std, 56 .fast_smc = tee_entry_fast, 57 .fiq = main_fiq, 58 .cpu_on = pm_panic, 59 .cpu_off = pm_panic, 60 .cpu_suspend = pm_panic, 61 .cpu_resume = pm_panic, 62 .system_off = pm_panic, 63 .system_reset = pm_panic, 64 }; 65 66 const struct thread_handlers *generic_boot_get_handlers(void) 67 { 68 return &handlers; 69 } 70 71 struct plat_nsec_ctx { 72 uint32_t usr_sp; 73 uint32_t usr_lr; 74 uint32_t svc_sp; 75 uint32_t svc_lr; 76 uint32_t svc_spsr; 77 uint32_t abt_sp; 78 uint32_t abt_lr; 79 uint32_t abt_spsr; 80 uint32_t und_sp; 81 uint32_t und_lr; 82 uint32_t und_spsr; 83 uint32_t irq_sp; 84 uint32_t irq_lr; 85 uint32_t irq_spsr; 86 uint32_t fiq_sp; 87 uint32_t fiq_lr; 88 uint32_t fiq_spsr; 89 uint32_t fiq_rx[5]; 90 uint32_t mon_lr; 91 uint32_t mon_spsr; 92 }; 93 94 void init_sec_mon(unsigned long nsec_entry) 95 { 96 struct plat_nsec_ctx *plat_ctx; 97 struct sm_nsec_ctx *nsec_ctx; 98 99 plat_ctx = phys_to_virt(nsec_entry, MEM_AREA_IO_SEC); 100 if (!plat_ctx) 101 panic(); 102 103 /* Invalidate cache to fetch data from external memory */ 104 cache_maintenance_l1(DCACHE_AREA_INVALIDATE, 105 plat_ctx, sizeof(*plat_ctx)); 106 107 /* Initialize secure monitor */ 108 nsec_ctx = sm_get_nsec_ctx(); 109 110 nsec_ctx->mode_regs.usr_sp = plat_ctx->usr_sp; 111 nsec_ctx->mode_regs.usr_lr = plat_ctx->usr_lr; 112 nsec_ctx->mode_regs.irq_spsr = plat_ctx->irq_spsr; 113 nsec_ctx->mode_regs.irq_sp = plat_ctx->irq_sp; 114 nsec_ctx->mode_regs.irq_lr = plat_ctx->irq_lr; 115 nsec_ctx->mode_regs.svc_spsr = plat_ctx->svc_spsr; 116 nsec_ctx->mode_regs.svc_sp = plat_ctx->svc_sp; 117 nsec_ctx->mode_regs.svc_lr = plat_ctx->svc_lr; 118 nsec_ctx->mode_regs.abt_spsr = plat_ctx->abt_spsr; 119 nsec_ctx->mode_regs.abt_sp = plat_ctx->abt_sp; 120 nsec_ctx->mode_regs.abt_lr = plat_ctx->abt_lr; 121 nsec_ctx->mode_regs.und_spsr = plat_ctx->und_spsr; 122 nsec_ctx->mode_regs.und_sp = plat_ctx->und_sp; 123 nsec_ctx->mode_regs.und_lr = plat_ctx->und_lr; 124 nsec_ctx->mon_lr = plat_ctx->mon_lr; 125 nsec_ctx->mon_spsr = plat_ctx->mon_spsr; 126 } 127