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| author | Yatharth Kochar <yatharth.kochar@arm.com> | 2016-06-28 16:58:26 +0100 |
|---|---|---|
| committer | Yatharth Kochar <yatharth.kochar@arm.com> | 2016-09-21 16:27:15 +0100 |
| commit | 1a0a3f0622e4b569513304109d9a0d093b71228a (patch) | |
| tree | 9850566923168a92a6ec7ebbabe03119f14b2786 /docs | |
| parent | a8aa7fec1d4a6df8617c0d0463f1e10f1827a609 (diff) | |
AArch32: Common changes needed for BL1/BL2
This patch adds common changes to support AArch32 state in
BL1 and BL2. Following are the changes:
* Added functions for disabling MMU from Secure state.
* Added AArch32 specific SMC function.
* Added semihosting support.
* Added reporting of unhandled exceptions.
* Added uniprocessor stack support.
* Added `el3_entrypoint_common` macro that can be
shared by BL1 and BL32 (SP_MIN) BL stages. The
`el3_entrypoint_common` is similar to the AArch64
counterpart with the main difference in the assembly
instructions and the registers that are relevant to
AArch32 execution state.
* Enabled `LOAD_IMAGE_V2` flag in Makefile for
`ARCH=aarch32` and added check to make sure that
platform has not overridden to disable it.
Change-Id: I33c6d8dfefb2e5d142fdfd06a0f4a7332962e1a3
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/porting-guide.md | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/docs/porting-guide.md b/docs/porting-guide.md index f42ff649..93c0169a 100644 --- a/docs/porting-guide.md +++ b/docs/porting-guide.md @@ -776,11 +776,15 @@ called in the following circumstances: The default implementation doesn't do anything, to avoid making assumptions about the way the platform displays its status information. -This function receives the exception type as its argument. Possible values for -exceptions types are listed in the [include/common/bl_common.h] header file. -Note that these constants are not related to any architectural exception code; -they are just an ARM Trusted Firmware convention. +For AArch64, this function receives the exception type as its argument. +Possible values for exceptions types are listed in the +[include/common/bl_common.h] header file. Note that these constants are not +related to any architectural exception code; they are just an ARM Trusted +Firmware convention. +For AArch32, this function receives the exception mode as its argument. +Possible values for exception modes are listed in the +[include/lib/aarch32/arch.h] header file. ### Function : plat_reset_handler() @@ -2234,6 +2238,7 @@ _Copyright (c) 2013-2016, ARM Limited and Contributors. All rights reserved._ [plat/common/aarch64/platform_up_stack.S]: ../plat/common/aarch64/platform_up_stack.S [plat/arm/board/fvp/fvp_pm.c]: ../plat/arm/board/fvp/fvp_pm.c [include/common/bl_common.h]: ../include/common/bl_common.h +[include/lib/aarch32/arch.h]: ../include/lib/aarch32/arch.h [include/plat/arm/common/arm_def.h]: ../include/plat/arm/common/arm_def.h [include/plat/common/common_def.h]: ../include/plat/common/common_def.h [include/plat/common/platform.h]: ../include/plat/common/platform.h |