diff options
Diffstat (limited to 'bl1/aarch64/bl1_context_mgmt.c')
| -rw-r--r-- | bl1/aarch64/bl1_context_mgmt.c | 38 |
1 files changed, 37 insertions, 1 deletions
diff --git a/bl1/aarch64/bl1_context_mgmt.c b/bl1/aarch64/bl1_context_mgmt.c index 2a8d58efd..b9a7e5ba6 100644 --- a/bl1/aarch64/bl1_context_mgmt.c +++ b/bl1/aarch64/bl1_context_mgmt.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2015-2020, ARM Limited and Contributors. All rights reserved. + * Copyright (c) 2015-2021, Arm Limited and Contributors. All rights reserved. * * SPDX-License-Identifier: BSD-3-Clause */ @@ -16,6 +16,7 @@ /* Following contains the cpu context pointers. */ static void *bl1_cpu_context_ptr[2]; +entry_point_info_t *bl2_ep_info; void *cm_get_context(uint32_t security_state) @@ -30,6 +31,40 @@ void cm_set_context(void *context, uint32_t security_state) bl1_cpu_context_ptr[security_state] = context; } +#if ENABLE_RME +/******************************************************************************* + * This function prepares the entry point information to run BL2 in Root world, + * i.e. EL3, for the case when FEAT_RME is enabled. + ******************************************************************************/ +void bl1_prepare_next_image(unsigned int image_id) +{ + image_desc_t *bl2_desc; + + assert(image_id == BL2_IMAGE_ID); + + /* Get the image descriptor. */ + bl2_desc = bl1_plat_get_image_desc(BL2_IMAGE_ID); + assert(bl2_desc != NULL); + + /* Get the entry point info. */ + bl2_ep_info = &bl2_desc->ep_info; + + bl2_ep_info->spsr = (uint32_t)SPSR_64(MODE_EL3, MODE_SP_ELX, + DISABLE_ALL_EXCEPTIONS); + + /* + * Flush cache since bl2_ep_info is accessed after MMU is disabled + * before jumping to BL2. + */ + flush_dcache_range((uintptr_t)bl2_ep_info, sizeof(entry_point_info_t)); + + /* Indicate that image is in execution state. */ + bl2_desc->state = IMAGE_STATE_EXECUTED; + + /* Print debug info and flush the console before running BL2. */ + print_entry_point_info(bl2_ep_info); +} +#else /******************************************************************************* * This function prepares the context for Secure/Normal world images. * Normal world images are transitioned to EL2(if supported) else EL1. @@ -93,3 +128,4 @@ void bl1_prepare_next_image(unsigned int image_id) print_entry_point_info(next_bl_ep); } +#endif /* ENABLE_RME */ |