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| author | Andres Salomon <dilinger@queued.net> | 2010-11-17 07:09:52 +0100 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2010-12-16 02:11:30 +0100 |
| commit | c10d1e260f7cb6766dc76b4e36ed8f4be53f195a (patch) | |
| tree | bcbeb1e08d65cd24a4c471d0fe8345ada28a076e /arch/x86/Kconfig | |
| parent | x86, of: Define irq functions to allow drivers/of/* to build on x86 (diff) | |
| download | linux-c10d1e260f7cb6766dc76b4e36ed8f4be53f195a.tar.xz linux-c10d1e260f7cb6766dc76b4e36ed8f4be53f195a.zip | |
x86, olpc: Add OLPC device-tree support
Make use of PROC_DEVICETREE to export the tree, and sparc's PROMTREE code to
call into OLPC's Open Firmware to build the tree.
v5: fix buglet with root node check (introduced in v4)
v4: address some minor style issues pointed out by Grant, and explicitly cast
negative phandle checks to s32.
v3: rename olpc_prom to olpc_dt
- rework Kconfig entries
- drop devtree build hook from proc, instead adding a call to x86's
paging_init (similarly to how sparc64 does it)
- switch allocation from using slab to alloc_bootmem. this allows
the DT to be built earlier during boot (during setup_arch); the
downside is that there are some 1200 bootmem reservations that are
done during boot. Not ideal..
- add a helper olpc_ofw_is_installed function to test for the
existence and successful detection of OLPC's OFW.
Signed-off-by: Andres Salomon <dilinger@queued.net>
LKML-Reference: <20101116220952.26526a80@queued.net>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/x86/Kconfig')
| -rw-r--r-- | arch/x86/Kconfig | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index e330da21b84f..ef34031a8339 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -2049,11 +2049,17 @@ config OLPC_OPENFIRMWARE bool "Support for OLPC's Open Firmware" depends on !X86_64 && !X86_PAE default n + select OF help This option adds support for the implementation of Open Firmware that is used on the OLPC XO-1 Children's Machine. If unsure, say N here. +config OLPC_OPENFIRMWARE_DT + bool + default y if OLPC_OPENFIRMWARE && PROC_DEVICETREE + select OF_PROMTREE + endif # X86_32 config AMD_NB |