From 4722d194e648fb5755faecee895b96b26f9732f3 Mon Sep 17 00:00:00 2001 From: Andres Salomon Date: Fri, 12 Nov 2010 05:45:26 +0000 Subject: x86, of: Define irq functions to allow drivers/of/* to build on x86 - Define a stub irq_create_of_mapping for x86 as a stop-gap solution until drivers/of/irq is further along. - Define irq_dispose_mapping for x86 to appease of_i2c.c These are needed to allow stuff in drivers/of/ to build on x86. This stuff will eventually get replaced; quoting Grant, "The long term plan is to have the drivers/of/ code handling the mapping intelligently like powerpc currently does." But for now, just provide these functions. Signed-off-by: Andres Salomon LKML-Reference: <20101111214526.5de7121b@queued.net> Signed-off-by: H. Peter Anvin --- arch/x86/include/asm/irq.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'arch/x86/include/asm') diff --git a/arch/x86/include/asm/irq.h b/arch/x86/include/asm/irq.h index 13b0eba..8d2c671 100644 --- a/arch/x86/include/asm/irq.h +++ b/arch/x86/include/asm/irq.h @@ -10,6 +10,9 @@ #include #include +/* Even though we don't support this, supply it to appease OF */ +static inline void irq_dispose_mapping(unsigned int virq) { } + static inline int irq_canonicalize(int irq) { return ((irq == 2) ? 9 : irq); -- cgit v1.1 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/olpc_ofw.h | 9 +++++++++ arch/x86/include/asm/prom.h | 1 + 2 files changed, 10 insertions(+) create mode 100644 arch/x86/include/asm/prom.h (limited to 'arch/x86/include/asm') diff --git a/arch/x86/include/asm/olpc_ofw.h b/arch/x86/include/asm/olpc_ofw.h index 2a84781..641988e 100644 --- a/arch/x86/include/asm/olpc_ofw.h +++ b/arch/x86/include/asm/olpc_ofw.h @@ -8,6 +8,8 @@ #ifdef CONFIG_OLPC_OPENFIRMWARE +extern bool olpc_ofw_is_installed(void); + /* run an OFW command by calling into the firmware */ #define olpc_ofw(name, args, res) \ __olpc_ofw((name), ARRAY_SIZE(args), args, ARRAY_SIZE(res), res) @@ -26,10 +28,17 @@ extern bool olpc_ofw_present(void); #else /* !CONFIG_OLPC_OPENFIRMWARE */ +static inline bool olpc_ofw_is_installed(void) { return false; } static inline void olpc_ofw_detect(void) { } static inline void setup_olpc_ofw_pgd(void) { } static inline bool olpc_ofw_present(void) { return false; } #endif /* !CONFIG_OLPC_OPENFIRMWARE */ +#ifdef CONFIG_OLPC_OPENFIRMWARE_DT +extern void olpc_dt_build_devicetree(void); +#else +static inline void olpc_dt_build_devicetree(void) { } +#endif /* CONFIG_OLPC_OPENFIRMWARE_DT */ + #endif /* _ASM_X86_OLPC_OFW_H */ diff --git a/arch/x86/include/asm/prom.h b/arch/x86/include/asm/prom.h new file mode 100644 index 0000000..b4ec95f --- /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 v1.1