From c10d1e260f7cb6766dc76b4e36ed8f4be53f195a Mon Sep 17 00:00:00 2001 From: Andres Salomon Date: Wed, 17 Nov 2010 06:09:52 +0000 Subject: 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 LKML-Reference: <20101116220952.26526a80@queued.net> Signed-off-by: H. Peter Anvin --- arch/x86/include/asm/prom.h | 1 + 1 file changed, 1 insertion(+) create mode 100644 arch/x86/include/asm/prom.h (limited to 'arch/x86/include/asm/prom.h') diff --git a/arch/x86/include/asm/prom.h b/arch/x86/include/asm/prom.h new file mode 100644 index 000000000000..b4ec95f07518 --- /dev/null +++ b/arch/x86/include/asm/prom.h @@ -0,0 +1 @@ +/* dummy prom.h; here to make linux/of.h's #includes happy */ -- cgit v1.2.3