From mboxrd@z Thu Jan 1 00:00:00 1970 From: arnd@arndb.de (Arnd Bergmann) Date: Fri, 19 Feb 2016 09:33:39 +0100 Subject: [PATCH 4/9] ARM: add CONFIG_PHYS_OFFSET default values In-Reply-To: References: <1455804123-2526139-1-git-send-email-arnd@arndb.de> <1455804123-2526139-5-git-send-email-arnd@arndb.de> Message-ID: <3974581.yknKb3tq7o@wuerfel> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Thursday 18 February 2016 11:02:33 Nicolas Pitre wrote: > > Acked-by: Nicolas Pitre > > Is there a way to provide a default for defaults? We could have something like config PHYS_OFFSET_0 bool config PHYS_OFFSET_1 bool config PHYS_OFFSET_2 bool ... (we need 8 of the 16 possible addresses) config PHYS_OFFSET hex "Physical address of main memory" if MMU default DRAM_BASE if !MMU default 0x00000000 if PHYS_OFFSET_0 default 0x10000000 if PHYS_OFFSET_1 default 0x20000000 if PHYS_OFFSET_2 default 0x30000000 if PHYS_OFFSET_3 default 0x70000000 if PHYS_OFFSET_7 default 0x80000000 if PHYS_OFFSET_8 default 0xa0000000 if PHYS_OFFSET_A default 0xc0000000 if PHYS_OFFSET_C and then select one of the bool symbols from each platform. Would that address your question? FWIW, that would also let us do: config XIP_KERNEL bool "Kernel Execute-In-Place from ROM" depends on PHYS_OFFSET_0 || PHYS_OFFSET_1 || PHYS_OFFSET_2 || PHYS_OFFSET_3 || PHYS_OFFSET_7 || PHYS_OFFSET_8 || PHYS_OFFSET_A || PHYS_OFFSET_C We can probably come up with a more elaborate way to prevent configurations that have more than one of these set. Arnd