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 <arm.h> 29 #include <assert.h> 30 #include <console.h> 31 #include <drivers/sunxi_uart.h> 32 #include <kernel/misc.h> 33 #include <kernel/panic.h> 34 #include <kernel/pm_stubs.h> 35 #include <kernel/thread.h> 36 #include <kernel/time_source.h> 37 #include <malloc.h> 38 #include <mm/core_mmu.h> 39 #include <mm/tee_mmu.h> 40 #include <optee_msg.h> 41 #include <platform_config.h> 42 #include <platform.h> 43 #include <sm/optee_smc.h> 44 #include <sm/sm.h> 45 #include <sm/tee_mon.h> 46 #include <stdint.h> 47 #include <string.h> 48 #include <tee/entry_fast.h> 49 #include <tee/entry_std.h> 50 #include <trace.h> 51 #include <util.h> 52 53 /* teecore heap address/size is defined in scatter file */ 54 extern unsigned char teecore_heap_start; 55 extern unsigned char teecore_heap_end; 56 57 static void main_fiq(void); 58 static void main_tee_entry_std(struct thread_smc_args *args); 59 static void main_tee_entry_fast(struct thread_smc_args *args); 60 61 static const struct thread_handlers handlers = { 62 .std_smc = main_tee_entry_std, 63 .fast_smc = main_tee_entry_fast, 64 .nintr = main_fiq, 65 .cpu_on = pm_panic, 66 .cpu_off = pm_panic, 67 .cpu_suspend = pm_panic, 68 .cpu_resume = pm_panic, 69 .system_off = pm_panic, 70 .system_reset = pm_panic, 71 }; 72 73 void main_init(uint32_t nsec_entry); /* called from assembly only */ 74 void main_init(uint32_t nsec_entry) 75 { 76 struct sm_nsec_ctx *nsec_ctx; 77 size_t pos = get_core_pos(); 78 79 /* 80 * Mask the interrupts before switch to the thread vector as the 81 * thread handler requires the interrupts to be masked while executing 82 * with the temporary stack. The thread subsystem also asserts that 83 * foreign interrupts are blocked when using most if its functions. 84 */ 85 thread_mask_exceptions( 86 THREAD_EXCP_NATIVE_INTR | THREAD_EXCP_FOREIGN_INTR); 87 88 if (pos == 0) { 89 thread_init_primary(&handlers); 90 91 /* initialize platform */ 92 platform_init(); 93 } 94 95 thread_init_per_cpu(); 96 97 /* Initialize secure monitor */ 98 nsec_ctx = sm_get_nsec_ctx(); 99 nsec_ctx->mon_lr = nsec_entry; 100 nsec_ctx->mon_spsr = CPSR_MODE_SVC | CPSR_I; 101 102 if (pos == 0) { 103 unsigned long a, s; 104 /* core malloc pool init */ 105 #ifdef CFG_TEE_MALLOC_START 106 a = CFG_TEE_MALLOC_START; 107 s = CFG_TEE_MALLOC_SIZE; 108 #else 109 a = (unsigned long)&teecore_heap_start; 110 s = (unsigned long)&teecore_heap_end; 111 a = ((a + 1) & ~0x0FFFF) + 0x10000; /* 64kB aligned */ 112 s = s & ~0x0FFFF; /* 64kB aligned */ 113 s = s - a; 114 #endif 115 malloc_add_pool((void *)a, s); 116 117 teecore_init_ta_ram(); 118 119 if (init_teecore() != TEE_SUCCESS) { 120 panic(); 121 } 122 } 123 124 IMSG("optee initialize finished\n"); 125 } 126 127 static void main_fiq(void) 128 { 129 panic(); 130 } 131 132 static void main_tee_entry_fast(struct thread_smc_args *args) 133 { 134 /* TODO move to main_init() */ 135 if (init_teecore() != TEE_SUCCESS) 136 panic(); 137 138 /* SiP Service Call Count */ 139 if (args->a0 == OPTEE_SMC_SIP_SUNXI_CALLS_COUNT) { 140 args->a0 = 1; 141 return; 142 } 143 144 /* SiP Service Call UID */ 145 if (args->a0 == OPTEE_SMC_SIP_SUNXI_CALLS_UID) { 146 args->a0 = OPTEE_SMC_SIP_SUNXI_UID_R0; 147 args->a1 = OPTEE_SMC_SIP_SUNXI_UID_R1; 148 args->a2 = OPTEE_SMC_SIP_SUNXI_UID_R2; 149 args->a3 = OPTEE_SMC_SIP_SUNXI_UID_R3; 150 return; 151 } 152 153 /* SiP Service Calls */ 154 if (args->a0 == OPTEE_SMC_OPTEE_FAST_CALL_SIP_SUNXI) { 155 platform_smc_handle(args); 156 return; 157 } 158 159 tee_entry_fast(args); 160 } 161 162 163 164 static void main_tee_entry_std(struct thread_smc_args *args) 165 { 166 /* TODO move to main_init() */ 167 if (init_teecore() != TEE_SUCCESS) 168 panic(); 169 170 tee_entry_std(args); 171 } 172 173 /* main_tee_entry_fast() supports 3 platform-specific functions */ 174 void tee_entry_get_api_call_count(struct thread_smc_args *args) 175 { 176 args->a0 = tee_entry_generic_get_api_call_count() + 3; 177 } 178 179 static struct sunxi_uart_data console_data; 180 181 void console_init(void) 182 { 183 sunxi_uart_init(&console_data, CONSOLE_UART_BASE); 184 register_serial_console(&console_data.chip); 185 } 186