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
diff --git a/plat/common/aarch32/platform_helpers.S b/plat/common/aarch32/platform_helpers.S
index 481dd68..069d96d 100644
--- a/plat/common/aarch32/platform_helpers.S
+++ b/plat/common/aarch32/platform_helpers.S
@@ -33,6 +33,7 @@
.weak plat_my_core_pos
.weak plat_reset_handler
+ .weak plat_disable_acp
.weak platform_mem_init
.weak plat_panic_handler
@@ -59,6 +60,15 @@
bx lr
endfunc plat_reset_handler
+ /* -----------------------------------------------------
+ * Placeholder function which should be redefined by
+ * each platform.
+ * -----------------------------------------------------
+ */
+func plat_disable_acp
+ bx lr
+endfunc plat_disable_acp
+
/* ---------------------------------------------------------------------
* Placeholder function which should be redefined by
* each platform.