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authorScott Wood <scottwood@freescale.com>2007-04-16 19:24:51 -0400
committerPaul Mackerras <paulus@samba.org>2007-04-24 07:31:53 -0400
commit270429baa928fa6beff4042a7701944e23396417 (patch)
tree025a98f94e1fc721726c152118d305fcd55b805a /arch/powerpc/Kconfig
parentb97d27914354619ec6883ffe08dbd9c8e4b826b7 (diff)
[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 <scottwood@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/Kconfig')
-rw-r--r--arch/powerpc/Kconfig24
1 files changed, 24 insertions, 0 deletions
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
162 select FSL_SOC 162 select FSL_SOC
163 select 83xx 163 select 83xx
164 select PPC_FPU 164 select PPC_FPU
165 select WANT_DEVICE_TREE
165 166
166config PPC_85xx 167config PPC_85xx
167 bool "Freescale 85xx" 168 bool "Freescale 85xx"
@@ -572,6 +573,29 @@ config SECCOMP
572 573
573 If unsure, say Y. Only embedded should say N here. 574 If unsure, say Y. Only embedded should say N here.
574 575
576config WANT_DEVICE_TREE
577 bool
578 default n
579
580config DEVICE_TREE
581 string "Static device tree source file"
582 depends on WANT_DEVICE_TREE
583 help
584 This specifies the device tree source (.dts) file to be
585 compiled and included when building the bootwrapper. If a
586 relative filename is given, then it will be relative to
587 arch/powerpc/boot/dts. If you are not using the bootwrapper,
588 or do not need to build a dts into the bootwrapper, this
589 field is ignored.
590
591 For example, this is required when building a cuImage target
592 for an older U-Boot, which cannot pass a device tree itself.
593 Such a kernel will not work with a newer U-Boot that tries to
594 pass a device tree (unless you tell it not to). If your U-Boot
595 does not mention a device tree in "help bootm", then use the
596 cuImage target and specify a device tree here. Otherwise, use
597 the uImage target and leave this field blank.
598
575endmenu 599endmenu
576 600
577config ISA_DMA_API 601config ISA_DMA_API