linker_script: move bss section to bl_common.ld.h
Move the bss section to the common header. This adds BAKERY_LOCK_NORMAL
and PMF_TIMESTAMP, which previously existed only in BL31. This is not
a big deal because unused data should not be compiled in the first
place. I believe this should be controlled by BL*_SOURCES in Makefiles,
not by linker scripts.
I investigated BL1, BL2, BL2U, BL31 for plat=fvp, and BL2-AT-EL3,
BL31, BL31 for plat=uniphier. I did not see any more unexpected
code addition.
The bss section has bigger alignment. I added BSS_ALIGN for this.
Currently, SORT_BY_ALIGNMENT() is missing in sp_min.ld.S, and with this
change, the BSS symbols in SP_MIN will be sorted by the alignment.
This is not a big deal (or, even better in terms of the image size).
Change-Id: I680ee61f84067a559bac0757f9d03e73119beb33
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/bl32/sp_min/sp_min.ld.S b/bl32/sp_min/sp_min.ld.S
index f652f17..da005db 100644
--- a/bl32/sp_min/sp_min.ld.S
+++ b/bl32/sp_min/sp_min.ld.S
@@ -107,20 +107,7 @@
__STACKS_END__ = .;
} >RAM
- /*
- * The .bss section gets initialised to 0 at runtime.
- * Its base address should be 8-byte aligned for better performance of the
- * zero-initialization code.
- */
- .bss (NOLOAD) : ALIGN(8) {
- __BSS_START__ = .;
- *(.bss*)
- *(COMMON)
- BAKERY_LOCK_NORMAL
- PMF_TIMESTAMP
- __BSS_END__ = .;
- } >RAM
-
+ BSS_SECTION >RAM
XLAT_TABLE_SECTION >RAM
__BSS_SIZE__ = SIZEOF(.bss);