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plat/arm/css/sgi: Map flash used for mem_protect 

The SGI platform defines the macro PLAT_ARM_MEM_PROT_ADDR which
indicates that the platform has mitigation for cold reboot attacks.

However, the flash memory used for the mem_protect region was not
mapped. This results in a crash when an OS calls PSCI MEM_PROTECT.

To fix this map the flash region used for mem_protect.

Change-Id: Ia494f924ecfe2ce835c045689ba8f942bf0941f4
Signed-off-by: Sami Mujawar <sami.mujawar@arm.com>
This commit is contained in:
Sami Mujawar 2020-04-30 15:50:34 +01:00 committed by Thomas Abraham
parent 73740d98d9
commit 7c15a8c14f
2 changed files with 9 additions and 3 deletions
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4
plat/arm/css/sgi/include/sgi_base_platform_def.h
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 2018-2020, ARM Limited and Contributors. All rights reserved.
* Copyright (c) 2018-2020, Arm Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@ -39,7 +39,7 @@
# define PLAT_SP_IMAGE_MAX_XLAT_TABLES 10
# else
# define PLAT_ARM_MMAP_ENTRIES (5 + ((CSS_SGI_CHIP_COUNT - 1) * 3))
# define MAX_XLAT_TABLES (5 + ((CSS_SGI_CHIP_COUNT - 1) * 3))
# define MAX_XLAT_TABLES (6 + ((CSS_SGI_CHIP_COUNT - 1) * 3))
# endif
#elif defined(IMAGE_BL32)
# define PLAT_ARM_MMAP_ENTRIES 8

8
plat/arm/css/sgi/sgi_plat.c
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 2018-2020, ARM Limited and Contributors. All rights reserved.
* Copyright (c) 2018-2020, Arm Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@ -43,6 +43,9 @@ const mmap_region_t plat_arm_mmap[] = {
const mmap_region_t plat_arm_mmap[] = {
ARM_MAP_SHARED_RAM,
SGI_MAP_FLASH0_RO,
#ifdef PLAT_ARM_MEM_PROT_ADDR
ARM_V2M_MAP_MEM_PROTECT,
#endif
CSS_SGI_MAP_DEVICE,
SOC_CSS_MAP_DEVICE,
ARM_MAP_NS_DRAM1,
@ -63,6 +66,9 @@ const mmap_region_t plat_arm_mmap[] = {
ARM_MAP_SHARED_RAM,
V2M_MAP_IOFPGA,
CSS_SGI_MAP_DEVICE,
#ifdef PLAT_ARM_MEM_PROT_ADDR
ARM_V2M_MAP_MEM_PROTECT,
#endif
SOC_CSS_MAP_DEVICE,
#if SPM_MM
ARM_SPM_BUF_EL3_MMAP,