refactor(build): distinguish BL2 as TF-A entry point and BL2 running at EL3
BL2_AT_EL3 is an overloaded macro which has two uses:
1. When BL2 is entry point into TF-A(no BL1)
2. When BL2 is running at EL3 exception level
These two scenarios are not exactly same even though first implicitly
means second to be true. To distinguish between these two use cases we
introduce new macros.
BL2_AT_EL3 is renamed to RESET_TO_BL2 to better convey both 1. and 2.
Additional macro BL2_RUNS_AT_EL3 is added to cover all scenarious where
BL2 runs at EL3 (including four world systems).
BREAKING CHANGE: BL2_AT_EL3 renamed to RESET_TO_BL2 across the
repository.
Change-Id: I477e1d0f843b44b799c216670e028fcb3509fb72
Signed-off-by: Arvind Ram Prakash <arvind.ramprakash@arm.com>
Signed-off-by: Maksims Svecovs <maksims.svecovs@arm.com>
diff --git a/include/plat/arm/common/arm_def.h b/include/plat/arm/common/arm_def.h
index 38793cd..1bb7db7 100644
--- a/include/plat/arm/common/arm_def.h
+++ b/include/plat/arm/common/arm_def.h
@@ -554,7 +554,7 @@
/*******************************************************************************
* BL2 specific defines.
******************************************************************************/
-#if BL2_AT_EL3
+#if RESET_TO_BL2
#if ENABLE_PIE
/*
* As the BL31 image size appears to be increased when built with the ENABLE_PIE
@@ -614,10 +614,11 @@
- PLAT_ARM_MAX_BL31_SIZE)
#define BL31_PROGBITS_LIMIT BL2_BASE
/*
- * For BL2_AT_EL3 make sure the BL31 can grow up until BL2_BASE. This is
- * because in the BL2_AT_EL3 configuration, BL2 is always resident.
+ * For RESET_TO_BL2 make sure the BL31 can grow up until BL2_BASE.
+ * This is because in the RESET_TO_BL2 configuration,
+ * BL2 is always resident.
*/
-#if BL2_AT_EL3
+#if RESET_TO_BL2
#define BL31_LIMIT BL2_BASE
#else
#define BL31_LIMIT (ARM_BL_RAM_BASE + ARM_BL_RAM_SIZE)