1/* 2 * Copyright (c) 2017-2025, Arm Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7#include <platform_def.h> 8 9#include <arch.h> 10#include <asm_macros.S> 11#include <common/bl_common.h> 12#include <el3_common_macros.S> 13 14 .globl bl2_entrypoint 15 16#if BL2_IN_XIP_MEM || ENABLE_RME 17#define FIXUP_SIZE 0 18#else 19#define FIXUP_SIZE ((BL2_LIMIT) - (BL2_BASE)) 20#endif 21 22func bl2_entrypoint 23 /* Save arguments x0-x3 from previous Boot loader */ 24 mov x20, x0 25 mov x21, x1 26 mov x22, x2 27 mov x23, x3 28 29 el3_entrypoint_common \ 30 _init_sctlr=RESET_TO_BL2 \ 31 _warm_boot_mailbox=!PROGRAMMABLE_RESET_ADDRESS && RESET_TO_BL2 \ 32 _secondary_cold_boot=!COLD_BOOT_SINGLE_CPU && RESET_TO_BL2 \ 33 _init_memory=RESET_TO_BL2 \ 34 _init_c_runtime=1 \ 35 _exception_vectors=bl2_el3_exceptions \ 36 _pie_fixup_size=FIXUP_SIZE 37 38 /* --------------------------------------------- 39 * Restore parameters of boot rom 40 * --------------------------------------------- 41 */ 42 mov x0, x20 43 mov x1, x21 44 mov x2, x22 45 mov x3, x23 46 47 /* --------------------------------------------- 48 * Perform BL2 setup 49 * --------------------------------------------- 50 */ 51#if RESET_TO_BL2 52 bl bl2_el3_setup 53#else 54 bl bl2_setup 55#endif 56 57#if ENABLE_PAUTH 58 /* --------------------------------------------- 59 * Program APIAKey_EL1 and enable pointer authentication. 60 * --------------------------------------------- 61 */ 62 bl pauth_init_enable_el3 63#endif /* ENABLE_PAUTH */ 64 65 /* --------------------------------------------- 66 * Jump to main function. 67 * --------------------------------------------- 68 */ 69 bl bl2_main 70 71 /* --------------------------------------------- 72 * Should never reach this point. 73 * --------------------------------------------- 74 */ 75 no_ret plat_panic_handler 76endfunc bl2_entrypoint 77