Remove coherent memory from the BL memory maps
This patch extends the build option `USE_COHERENT_MEMORY` to
conditionally remove coherent memory from the memory maps of
all boot loader stages. The patch also adds necessary
documentation for coherent memory removal in firmware-design,
porting and user guides.
Fixes ARM-Software/tf-issues#106
Change-Id: I260e8768c6a5c2efc402f5804a80657d8ce38773
diff --git a/bl1/aarch64/bl1_entrypoint.S b/bl1/aarch64/bl1_entrypoint.S
index 82330c1..cfc6292 100644
--- a/bl1/aarch64/bl1_entrypoint.S
+++ b/bl1/aarch64/bl1_entrypoint.S
@@ -131,9 +131,11 @@
ldr x1, =__BSS_SIZE__
bl zeromem16
+#if USE_COHERENT_MEM
ldr x0, =__COHERENT_RAM_START__
ldr x1, =__COHERENT_RAM_UNALIGNED_SIZE__
bl zeromem16
+#endif
ldr x0, =__DATA_RAM_START__
ldr x1, =__DATA_ROM_START__