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fix(rpi3): expose BL1_RW to BL2 map for mboot

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BL2 requires the ability to access the TCG Event Log during
Measured Boot. Currently the Platform hangs since the Event Log
is not exposed to BL2's mmap. Define a RPI3_BL1_RW region to be
added to the BL2 Image, if Measured Boot is enabled.

Change-Id: Ic236a80e73ea342b4590cfb65bafbb8ffac17085
Signed-off-by: Abhi Singh <abhi.singh@arm.com>
This commit is contained in:
Abhi Singh 2024-11-07 17:41:58 -06:00 • committed by Abhi Singh
parent 4f9894db35
commit 9acaaded3c
2 changed files with 11 additions and 0 deletions
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3
plat/rpi/common/rpi3_common.c
View file

@ -75,6 +75,9 @@ static const mmap_region_t plat_rpi3_mmap[] = {
#endif #endif
MAP_DEVICE0, MAP_DEVICE0,
MAP_FIP, MAP_FIP,
#if MEASURED_BOOT
RPI3_MAP_BL1_RW,
#endif
MAP_NS_DRAM0, MAP_NS_DRAM0,
#ifdef BL32_BASE #ifdef BL32_BASE
MAP_BL32_MEM, MAP_BL32_MEM,

8
plat/rpi/rpi3/include/platform_def.h
View file

@ -171,6 +171,14 @@
#define BL1_RW_BASE (BL1_RW_LIMIT - PLAT_MAX_BL1_RW_SIZE) #define BL1_RW_BASE (BL1_RW_LIMIT - PLAT_MAX_BL1_RW_SIZE)
#define BL1_RW_LIMIT (BL_RAM_BASE + BL_RAM_SIZE) #define BL1_RW_LIMIT (BL_RAM_BASE + BL_RAM_SIZE)
/*
* In order to access the TCG Event Log in BL2, we need to expose the BL1_RW region
* where the log resides.
*/
#define RPI3_MAP_BL1_RW MAP_REGION_FLAT(BL1_RW_BASE, \
BL1_RW_LIMIT - BL1_RW_BASE, \
MT_MEMORY | MT_RW | MT_SECURE)
/* /*
* BL2 specific defines. * BL2 specific defines.
* *