From 83125a3a189ec34fb22a04e8efad69ae6d52674a Mon Sep 17 00:00:00 2001 From: Alessandro Rubini Date: Wed, 4 Apr 2012 19:40:21 +0200 Subject: x86, platform: Initial support for sta2x11 I/O hub The "ConneXt" sta2x11 I/O Hub is a bridge from PCIe to AMBA, and is used as main chipset in some Atom boards. The set of peripherals it exports live in an AMBA bus internal to the chip, so a custom remapping of addresses is needed. This is implemented by fixup calls for the PCI deivices, based on CONFIG_X86_DEV_DMA_OPS and CONFIG_X86_DMA_REMAP . Signed-off-by: Alessandro Rubini Link: http://lkml.kernel.org/r/ddca670ca8180e52d49b3fe642742ddd23ab2cb2.1333560789.git.rubini@gnudd.com Acked-by: Giancarlo Asnaghi Cc: Alan Cox Signed-off-by: H. Peter Anvin --- arch/x86/Kconfig | 28 +++++++++++++++++++++++----- 1 file changed, 23 insertions(+), 5 deletions(-) (limited to 'arch/x86/Kconfig') diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 95ca56036030..f9ed801abaf9 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -329,6 +329,7 @@ config X86_EXTENDED_PLATFORM NUMAQ (IBM/Sequent) RDC R-321x SoC SGI 320/540 (Visual Workstation) + STA2X11-based (e.g. Northville) Summit/EXA (IBM x440) Unisys ES7000 IA32 series Moorestown MID devices @@ -461,10 +462,10 @@ config X86_32_NON_STANDARD depends on X86_32 && SMP depends on X86_EXTENDED_PLATFORM ---help--- - This option compiles in the NUMAQ, Summit, bigsmp, ES7000, default - subarchitectures. It is intended for a generic binary kernel. - if you select them all, kernel will probe it one by one. and will - fallback to default. + This option compiles in the NUMAQ, Summit, bigsmp, ES7000, + STA2X11, default subarchitectures. It is intended for a generic + binary kernel. If you select them all, kernel will probe it + one by one and will fallback to default. # Alphabetically sorted list of Non standard 32 bit platforms @@ -504,6 +505,22 @@ config X86_VISWS A kernel compiled for the Visual Workstation will run on general PCs as well. See for details. +config STA2X11 + bool "STA2X11 Companion Chip Support" + depends on X86_32_NON_STANDARD && PCI + select X86_DEV_DMA_OPS + select X86_DMA_REMAP + select SWIOTLB + select MFD_STA2X11 + select ARCH_REQUIRE_GPIOLIB + default n + ---help--- + This adds support for boards based on the STA2X11 IO-Hub, + a.k.a. "ConneXt". The chip is used in place of the standard + PC chipset, so all "standard" peripherals are missing. If this + option is selected the kernel will still be able to boot on + standard PC machines. + config X86_SUMMIT bool "Summit/EXA (IBM x440)" depends on X86_32_NON_STANDARD @@ -2218,10 +2235,11 @@ config HAVE_TEXT_POKE_SMP config X86_DEV_DMA_OPS bool - depends on X86_64 + depends on X86_64 || STA2X11 config X86_DMA_REMAP bool + depends on STA2X11 source "net/Kconfig" -- cgit v1.2.3