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authordanh-arm <dan.handley@arm.com>2014-08-12 16:38:11 +0100
committerdanh-arm <dan.handley@arm.com>2014-08-12 16:38:11 +0100
commit46339731477bbed24f9dbf81d38deb5ad3b5727c (patch)
tree3266c3ad040b04979f8ee40be5d0223c0c0f0b91 /docs
parente08098c2597fc20b36962d283abe2afda0964819 (diff)
parentaa442d3461d5cdb35febcfe5d89a67ae31207b60 (diff)
Merge pull request #182 from soby-mathew/sm/stack_optimize
Reduce runtime stack size and add compilation macro for each BL stage
Diffstat (limited to 'docs')
-rw-r--r--docs/firmware-design.md5
1 files changed, 5 insertions, 0 deletions
diff --git a/docs/firmware-design.md b/docs/firmware-design.md
index 3203a52..23cae19 100644
--- a/docs/firmware-design.md
+++ b/docs/firmware-design.md
@@ -1226,6 +1226,11 @@ categories. Based upon the above, the code layout looks like this:
lib Yes Yes Yes
services No No Yes
+The build system provides a non configurable build option IMAGE_BLx for each
+boot loader stage (where x = BL stage). e.g. for BL1 , IMAGE_BL1 will be
+defined by the build system. This enables the Trusted Firmware to compile
+certain code only for specific boot loader stages
+
All assembler files have the `.S` extension. The linker source files for each
boot stage have the extension `.ld.S`. These are processed by GCC to create the
linker scripts which have the extension `.ld`.