From 270429baa928fa6beff4042a7701944e23396417 Mon Sep 17 00:00:00 2001 From: Scott Wood Date: Tue, 17 Apr 2007 09:24:51 +1000 Subject: [POWERPC] bootwrapper: Add CONFIG_DEVICE_TREE This provides a way to tell the bootwrapper makefile which device tree to include by default. The wrapper can still be invoked standalone to wrap with a different device tree without reconfiguring the kernel, if that is desired. The user will only be asked to provide a device tree if the platform selects CONFIG_WANT_DEVICE_TREE. Signed-off-by: Scott Wood Signed-off-by: Paul Mackerras --- arch/powerpc/Kconfig | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) (limited to 'arch/powerpc') diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 26713da1b524..9b9c00ee688d 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -162,6 +162,7 @@ config PPC_83xx select FSL_SOC select 83xx select PPC_FPU + select WANT_DEVICE_TREE config PPC_85xx bool "Freescale 85xx" @@ -572,6 +573,29 @@ config SECCOMP If unsure, say Y. Only embedded should say N here. +config WANT_DEVICE_TREE + bool + default n + +config DEVICE_TREE + string "Static device tree source file" + depends on WANT_DEVICE_TREE + help + This specifies the device tree source (.dts) file to be + compiled and included when building the bootwrapper. If a + relative filename is given, then it will be relative to + arch/powerpc/boot/dts. If you are not using the bootwrapper, + or do not need to build a dts into the bootwrapper, this + field is ignored. + + For example, this is required when building a cuImage target + for an older U-Boot, which cannot pass a device tree itself. + Such a kernel will not work with a newer U-Boot that tries to + pass a device tree (unless you tell it not to). If your U-Boot + does not mention a device tree in "help bootm", then use the + cuImage target and specify a device tree here. Otherwise, use + the uImage target and leave this field blank. + endmenu config ISA_DMA_API -- cgit v1.2.2