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Add compilation macro for each BL stage

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This patch defines a compile time macro for each boot loader stage
which allows compilation of code only for a specific stage.

Change-Id: I3a4068404cd3dc26d652556ca9ca7afea8dd28ef
This commit is contained in:
Soby Mathew
2014-07-16 15:12:21 +01:00
parent c1efc4c066
commit 27905d0a10
2 changed files with 10 additions and 5 deletions
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5
docs/firmware-design.md
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@@ -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`.