1 /* 2 * Copyright (c) 2014, Allwinner Technology Co., Ltd. 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 34 #include <sm/sm.h> 35 #include <sm/tee_mon.h> 36 #include <sm/teesmc.h> 37 #include <sm/teesmc_optee.h> 38 39 #include <arm.h> 40 #include <kernel/thread.h> 41 #include <kernel/time_source.h> 42 #include <kernel/panic.h> 43 #include <kernel/pm_stubs.h> 44 #include <kernel/misc.h> 45 #include <mm/tee_pager.h> 46 #include <mm/tee_mmu.h> 47 #include <mm/core_mmu.h> 48 #include <mm/tee_mmu_defs.h> 49 #include <tee/entry.h> 50 #include <tee/arch_svc.h> 51 #include <platform.h> 52 #include <util.h> 53 #include <trace.h> 54 #include <malloc.h> 55 56 /* teecore heap address/size is defined in scatter file */ 57 extern unsigned char teecore_heap_start; 58 extern unsigned char teecore_heap_end; 59 60 static void main_fiq(void); 61 static void main_tee_entry(struct thread_smc_args *args); 62 63 static const struct thread_handlers handlers = { 64 .std_smc = main_tee_entry, 65 .fast_smc = main_tee_entry, 66 .fiq = main_fiq, 67 .svc = tee_svc_handler, 68 .abort = tee_pager_abort_handler, 69 .cpu_on = pm_panic, 70 .cpu_off = pm_panic, 71 .cpu_suspend = pm_panic, 72 .cpu_resume = pm_panic, 73 .system_off = pm_panic, 74 .system_reset = pm_panic, 75 }; 76 77 void main_init(uint32_t nsec_entry); /* called from assembly only */ 78 void main_init(uint32_t nsec_entry) 79 { 80 struct sm_nsec_ctx *nsec_ctx; 81 size_t pos = get_core_pos(); 82 83 /* 84 * Mask IRQ and FIQ before switch to the thread vector as the 85 * thread handler requires IRQ and FIQ to be masked while executing 86 * with the temporary stack. The thread subsystem also asserts that 87 * IRQ is blocked when using most if its functions. 88 */ 89 write_cpsr(read_cpsr() | CPSR_F | CPSR_I); 90 91 if (pos == 0) { 92 thread_init_primary(&handlers); 93 94 /* initialize platform */ 95 platform_init(); 96 } 97 98 thread_init_per_cpu(); 99 100 /* Initialize secure monitor */ 101 nsec_ctx = sm_get_nsec_ctx(); 102 nsec_ctx->mon_lr = nsec_entry; 103 nsec_ctx->mon_spsr = CPSR_MODE_SVC | CPSR_I; 104 105 if (pos == 0) { 106 unsigned long a, s; 107 /* core malloc pool init */ 108 #ifdef CFG_TEE_MALLOC_START 109 a = CFG_TEE_MALLOC_START; 110 s = CFG_TEE_MALLOC_SIZE; 111 #else 112 a = (unsigned long)&teecore_heap_start; 113 s = (unsigned long)&teecore_heap_end; 114 a = ((a + 1) & ~0x0FFFF) + 0x10000; /* 64kB aligned */ 115 s = s & ~0x0FFFF; /* 64kB aligned */ 116 s = s - a; 117 #endif 118 malloc_init((void *)a, s); 119 120 teecore_init_ta_ram(); 121 122 if (init_teecore() != TEE_SUCCESS) { 123 panic(); 124 } 125 } 126 127 IMSG("optee initialize finished\n"); 128 } 129 130 static void main_fiq(void) 131 { 132 panic(); 133 } 134 135 static void main_tee_entry(struct thread_smc_args *args) 136 { 137 /* TODO move to main_init() */ 138 if (init_teecore() != TEE_SUCCESS) 139 panic(); 140 141 /* 142 * This function first catches platform specific SMC functions 143 * if none matches, the generic tee_entry is called. 144 */ 145 if (args->a0 == TEESMC32_OPTEE_FASTCALL_GET_SHM_CONFIG) { 146 args->a0 = TEESMC_RETURN_OK; 147 args->a1 = default_nsec_shm_paddr; 148 args->a2 = default_nsec_shm_size; 149 /* Should this be TEESMC cache attributes instead? */ 150 args->a3 = core_mmu_is_shm_cached(); 151 return; 152 } 153 154 if (args->a0 == TEESMC32_OPTEE_FASTCALL_L2CC_MUTEX) { 155 switch (args->a1) { 156 case TEESMC_OPTEE_L2CC_MUTEX_GET_ADDR: 157 case TEESMC_OPTEE_L2CC_MUTEX_SET_ADDR: 158 case TEESMC_OPTEE_L2CC_MUTEX_ENABLE: 159 case TEESMC_OPTEE_L2CC_MUTEX_DISABLE: 160 /* A80 platform not support L2CC_MUTEX */ 161 args->a0 = TEESMC_RETURN_UNKNOWN_FUNCTION; 162 return; 163 default: 164 args->a0 = TEESMC_RETURN_EBADCMD; 165 return; 166 } 167 } 168 169 /* SiP Service Call Count */ 170 if (args->a0 == TEESMC32_SIP_SUNXI_CALLS_COUNT) { 171 args->a0 = 1; 172 return; 173 } 174 175 /* SiP Service Call UID */ 176 if (args->a0 == TEESMC32_SIP_SUNXI_CALLS_UID) { 177 args->a0 = TEESMC_SIP_SUNXI_UID_R0; 178 args->a1 = TEESMC_SIP_SUNXI_UID_R1; 179 args->a2 = TEESMC_SIP_SUNXI_UID_R2; 180 args->a3 = TEESMC_SIP_SUNXI_UID_R3; 181 return; 182 } 183 184 /* SiP Service Calls */ 185 if (args->a0 == TEESMC32_OPTEE_FAST_CALL_SIP_SUNXI) { 186 platform_smc_handle(args); 187 return; 188 } 189 190 tee_entry(args); 191 } 192 193 194 /* Override weak function in tee/entry.c */ 195 void tee_entry_get_api_call_count(struct thread_smc_args *args) 196 { 197 args->a0 = tee_entry_generic_get_api_call_count() + 2; 198 } 199 200 /* Override weak function in tee/entry.c */ 201 void tee_entry_get_api_uuid(struct thread_smc_args *args) 202 { 203 args->a0 = TEESMC_OPTEE_UID_R0; 204 args->a1 = TEESMC_OPTEE_UID_R1; 205 args->a2 = TEESMC_OPTEE_UID_R2; 206 args->a3 = TEESMC_OPTEE_UID32_R3; 207 } 208 209 /* Override weak function in tee/entry.c */ 210 void tee_entry_get_api_revision(struct thread_smc_args *args) 211 { 212 args->a0 = TEESMC_OPTEE_REVISION_MAJOR; 213 args->a1 = TEESMC_OPTEE_REVISION_MINOR; 214 } 215 216 /* Override weak function in tee/entry.c */ 217 void tee_entry_get_os_uuid(struct thread_smc_args *args) 218 { 219 args->a0 = TEESMC_OS_OPTEE_UUID_R0; 220 args->a1 = TEESMC_OS_OPTEE_UUID_R1; 221 args->a2 = TEESMC_OS_OPTEE_UUID_R2; 222 args->a3 = TEESMC_OS_OPTEE_UUID_R3; 223 } 224 225 /* Override weak function in tee/entry.c */ 226 void tee_entry_get_os_revision(struct thread_smc_args *args) 227 { 228 args->a0 = TEESMC_OS_OPTEE_REVISION_MAJOR; 229 args->a1 = TEESMC_OS_OPTEE_REVISION_MINOR; 230 } 231