1b1d27b48SRoberto Vargas/* 2*f461fe34SAnthony Steinhauser * Copyright (c) 2017-2020, ARM Limited and Contributors. All rights reserved. 3b1d27b48SRoberto Vargas * 4b1d27b48SRoberto Vargas * SPDX-License-Identifier: BSD-3-Clause 5b1d27b48SRoberto Vargas */ 6b1d27b48SRoberto Vargas 7b1d27b48SRoberto Vargas#include <arch.h> 8b1d27b48SRoberto Vargas#include <asm_macros.S> 909d40e0eSAntonio Nino Diaz#include <common/bl_common.h> 10b1d27b48SRoberto Vargas#include <el3_common_macros.S> 11b1d27b48SRoberto Vargas 12b1d27b48SRoberto Vargas .globl bl2_entrypoint 13b1d27b48SRoberto Vargas .globl bl2_el3_run_image 14b1d27b48SRoberto Vargas .globl bl2_run_next_image 15b1d27b48SRoberto Vargas 16b1d27b48SRoberto Vargasfunc bl2_entrypoint 17b1d27b48SRoberto Vargas /* Save arguments x0-x3 from previous Boot loader */ 18b1d27b48SRoberto Vargas mov x20, x0 19b1d27b48SRoberto Vargas mov x21, x1 20b1d27b48SRoberto Vargas mov x22, x2 21b1d27b48SRoberto Vargas mov x23, x3 22b1d27b48SRoberto Vargas 23b1d27b48SRoberto Vargas el3_entrypoint_common \ 24b1d27b48SRoberto Vargas _init_sctlr=1 \ 25b1d27b48SRoberto Vargas _warm_boot_mailbox=!PROGRAMMABLE_RESET_ADDRESS \ 26b1d27b48SRoberto Vargas _secondary_cold_boot=!COLD_BOOT_SINGLE_CPU \ 27b1d27b48SRoberto Vargas _init_memory=1 \ 28b1d27b48SRoberto Vargas _init_c_runtime=1 \ 29da90359bSManish Pandey _exception_vectors=bl2_el3_exceptions \ 30da90359bSManish Pandey _pie_fixup_size=0 31b1d27b48SRoberto Vargas 32dcbfa11bSAntonio Nino Diaz /* --------------------------------------------- 33b1d27b48SRoberto Vargas * Restore parameters of boot rom 34dcbfa11bSAntonio Nino Diaz * --------------------------------------------- 35b1d27b48SRoberto Vargas */ 36b1d27b48SRoberto Vargas mov x0, x20 37b1d27b48SRoberto Vargas mov x1, x21 38b1d27b48SRoberto Vargas mov x2, x22 39b1d27b48SRoberto Vargas mov x3, x23 40b1d27b48SRoberto Vargas 41dcbfa11bSAntonio Nino Diaz /* --------------------------------------------- 42dcbfa11bSAntonio Nino Diaz * Perform BL2 setup 43dcbfa11bSAntonio Nino Diaz * --------------------------------------------- 44dcbfa11bSAntonio Nino Diaz */ 45dcbfa11bSAntonio Nino Diaz bl bl2_el3_setup 46dcbfa11bSAntonio Nino Diaz 47dcbfa11bSAntonio Nino Diaz#if ENABLE_PAUTH 489fc59639SAlexei Fedorov /* --------------------------------------------- 49ed108b56SAlexei Fedorov * Program APIAKey_EL1 and enable pointer authentication. 509fc59639SAlexei Fedorov * --------------------------------------------- 519fc59639SAlexei Fedorov */ 52ed108b56SAlexei Fedorov bl pauth_init_enable_el3 53dcbfa11bSAntonio Nino Diaz#endif /* ENABLE_PAUTH */ 54b1d27b48SRoberto Vargas 55b1d27b48SRoberto Vargas /* --------------------------------------------- 56b1d27b48SRoberto Vargas * Jump to main function. 57b1d27b48SRoberto Vargas * --------------------------------------------- 58b1d27b48SRoberto Vargas */ 59b1d27b48SRoberto Vargas bl bl2_main 60b1d27b48SRoberto Vargas 61b1d27b48SRoberto Vargas /* --------------------------------------------- 62b1d27b48SRoberto Vargas * Should never reach this point. 63b1d27b48SRoberto Vargas * --------------------------------------------- 64b1d27b48SRoberto Vargas */ 65b1d27b48SRoberto Vargas no_ret plat_panic_handler 66b1d27b48SRoberto Vargasendfunc bl2_entrypoint 67b1d27b48SRoberto Vargas 68b1d27b48SRoberto Vargasfunc bl2_run_next_image 69b1d27b48SRoberto Vargas mov x20,x0 70dcbfa11bSAntonio Nino Diaz /* --------------------------------------------- 71b1d27b48SRoberto Vargas * MMU needs to be disabled because both BL2 and BL31 execute 72b1d27b48SRoberto Vargas * in EL3, and therefore share the same address space. 73b1d27b48SRoberto Vargas * BL31 will initialize the address space according to its 74b1d27b48SRoberto Vargas * own requirement. 75dcbfa11bSAntonio Nino Diaz * --------------------------------------------- 76b1d27b48SRoberto Vargas */ 77b1d27b48SRoberto Vargas bl disable_mmu_icache_el3 78b1d27b48SRoberto Vargas tlbi alle3 79b1d27b48SRoberto Vargas bl bl2_el3_plat_prepare_exit 80b1d27b48SRoberto Vargas 81ed108b56SAlexei Fedorov#if ENABLE_PAUTH 82dcbfa11bSAntonio Nino Diaz /* --------------------------------------------- 83ed108b56SAlexei Fedorov * Disable pointer authentication before jumping 84ed108b56SAlexei Fedorov * to next boot image. 85dcbfa11bSAntonio Nino Diaz * --------------------------------------------- 86dcbfa11bSAntonio Nino Diaz */ 87ed108b56SAlexei Fedorov bl pauth_disable_el3 88dcbfa11bSAntonio Nino Diaz#endif /* ENABLE_PAUTH */ 89dcbfa11bSAntonio Nino Diaz 90b1d27b48SRoberto Vargas ldp x0, x1, [x20, #ENTRY_POINT_INFO_PC_OFFSET] 91b1d27b48SRoberto Vargas msr elr_el3, x0 92b1d27b48SRoberto Vargas msr spsr_el3, x1 93b1d27b48SRoberto Vargas 94b1d27b48SRoberto Vargas ldp x6, x7, [x20, #(ENTRY_POINT_INFO_ARGS_OFFSET + 0x30)] 95b1d27b48SRoberto Vargas ldp x4, x5, [x20, #(ENTRY_POINT_INFO_ARGS_OFFSET + 0x20)] 96b1d27b48SRoberto Vargas ldp x2, x3, [x20, #(ENTRY_POINT_INFO_ARGS_OFFSET + 0x10)] 97b1d27b48SRoberto Vargas ldp x0, x1, [x20, #(ENTRY_POINT_INFO_ARGS_OFFSET + 0x0)] 98*f461fe34SAnthony Steinhauser exception_return 99b1d27b48SRoberto Vargasendfunc bl2_run_next_image 100