| Zelalem Aweke | 688fbf7 | 2021-07-09 11:37:10 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2021, Arm Limited. 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 | |
| 17 | func bl2_entrypoint |
| 18 | /* Save arguments x0-x3 from previous Boot loader */ |
| 19 | mov x20, x0 |
| 20 | mov x21, x1 |
| 21 | mov x22, x2 |
| 22 | mov x23, x3 |
| 23 | |
| 24 | el3_entrypoint_common \ |
| 25 | _init_sctlr=0 \ |
| 26 | _warm_boot_mailbox=0 \ |
| 27 | _secondary_cold_boot=0 \ |
| 28 | _init_memory=0 \ |
| 29 | _init_c_runtime=1 \ |
| 30 | _exception_vectors=bl2_el3_exceptions \ |
| 31 | _pie_fixup_size=0 |
| 32 | |
| 33 | /* --------------------------------------------- |
| 34 | * Restore parameters of boot rom |
| 35 | * --------------------------------------------- |
| 36 | */ |
| 37 | mov x0, x20 |
| 38 | mov x1, x21 |
| 39 | mov x2, x22 |
| 40 | mov x3, x23 |
| 41 | |
| 42 | /* --------------------------------------------- |
| 43 | * Perform BL2 setup |
| 44 | * --------------------------------------------- |
| 45 | */ |
| 46 | bl bl2_setup |
| 47 | |
| 48 | #if ENABLE_PAUTH |
| 49 | /* --------------------------------------------- |
| 50 | * Program APIAKey_EL1 and enable pointer authentication. |
| 51 | * --------------------------------------------- |
| 52 | */ |
| 53 | bl pauth_init_enable_el3 |
| 54 | #endif /* ENABLE_PAUTH */ |
| 55 | |
| 56 | /* --------------------------------------------- |
| 57 | * Jump to main function. |
| 58 | * --------------------------------------------- |
| 59 | */ |
| 60 | bl bl2_main |
| 61 | |
| 62 | /* --------------------------------------------- |
| 63 | * Should never reach this point. |
| 64 | * --------------------------------------------- |
| 65 | */ |
| 66 | no_ret plat_panic_handler |
| 67 | endfunc bl2_entrypoint |