linux-kernel - [PATCH] ARM: mutually exclude ZBOOT_ROM and AUTO

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Date:	Fri, 14 Oct 2011 08:59:05 -0700
From:	Olof Johansson <olof@...om.net>
To:	Russell King - ARM Linux <linux@....linux.org.uk>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-tegra@...r.kernel.org,
	linux-kernel@...r.kernel.org, ccross@...roid.com, arnd@...db.de,
	swarren@...dia.com, pdeschrijver@...dia.com,
	Olof Johansson <olof@...om.net>
Subject: [PATCH] ARM: mutually exclude ZBOOT_ROM and AUTO_ZRELADDR

This way platforms that want it can select AUTO_ZRELADDR without issues caused by
someone manually also enabling ZBOOT_ROM.

Signed-off-by: Olof Johansson <olof@...om.net>
---
 arch/arm/Kconfig |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)


Russell King wrote at Friday, October 14, 2011 1:15 AM:

> I'll point out that this makes Tegra incompatible with ZBOOT_ROM, which
> can still be enabled.  ZBOOT_ROM=y AUTO_ZRELADDR=y is an invalid
> configuration at runtime.

Ah, looks like the dependency is only one-way. Since they are mutually
exclusive, how about the below?


diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 82973b2..2ad58e8 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1814,6 +1814,7 @@ config ZBOOT_ROM_BSS
 config ZBOOT_ROM
 	bool "Compressed boot loader in ROM/flash"
 	depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
+	depends on !AUTO_ZRELADDR
 	help
 	  Say Y here if you intend to execute your compressed kernel image
 	  (zImage) directly from ROM or flash.  If unsure, say N.
-- 
1.7.4.1

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