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authorShawn Guo <shawn.guo@linaro.org>2013-03-14 08:48:06 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2013-03-15 17:18:52 +0000
commit3b4af9bc24472a9411837ad0794312028df1fbd9 (patch)
tree083cc2f00a97eae2ec968eeebb561b72e21aa5bc /arch/arm/Kconfig.debug
parent615967b00fecc9e636dc59bf1ee322274f7dd041 (diff)
downloadlinux-3b4af9bc24472a9411837ad0794312028df1fbd9.tar.gz
ARM: 7672/1: uncompress debug support for multiplatform build
Instead of giving zero support of uncompress debug for multiplatform build, the patch turns uncompress debug into one part of DEBUG_LL support. When DEBUG_LL is turned on for a particular platform, uncompress debug works too for that platform. OMAP and Tegra are exceptions here. OMAP low-level debug code places data in the .data section, and that is not allowed in decompressor. And Tegra code has reference to variable that's unavailable in decompressor but only in kernel. That's why Kconfig symbol DEBUG_UNCOMPRESS controlling multiplatform uncompress debug support is defined with !DEBUG_OMAP2PLUS_UART && !DEBUG_TEGRA_UART. It creates arch/arm/boot/compressed/debug.S with CONFIG_DEBUG_LL_INCLUDE included there, implements a generic putc() using those macros, which will be built when DEBUG_UNCOMPRESS is defined. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/Kconfig.debug')
-rw-r--r--arch/arm/Kconfig.debug6
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index fc54a5bcf5a..7aa30e43cb8 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -601,6 +601,12 @@ config DEBUG_LL_INCLUDE
default "debug/zynq.S" if DEBUG_ZYNQ_UART0 || DEBUG_ZYNQ_UART1
default "mach/debug-macro.S"
+config DEBUG_UNCOMPRESS
+ bool
+ default y if ARCH_MULTIPLATFORM && DEBUG_LL && \
+ !DEBUG_OMAP2PLUS_UART && \
+ !DEBUG_TEGRA_UART
+
config UNCOMPRESS_INCLUDE
string
default "debug/uncompress.h" if ARCH_MULTIPLATFORM