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* x86: Move olpc to platformThomas Gleixner2010-10-271-281/+0
| | | | | Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Andres Salomon <dilinger@queued.net>
* x86, olpc: Register XO-1 platform devicesDaniel Drake2010-10-131-0/+24
| | | | | | | | | | | | | | The upcoming XO-1 rfkill driver (for drivers/platform/x86) will register itself with the name "xo1-rfkill", and the already-merged XO-1 poweroff code uses name "olpc-xo1" Add the necessary mechanics so that these devices are properly initialized on XO-1 laptops. Signed-off-by: Daniel Drake <dsd@laptop.org> LKML-Reference: <20101013181042.90C8F9D401B@zog.reactivated.net> Cc: Matthew Garrett <mjg@redhat.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
* x86, olpc: Don't retry EC commands foreverPaul Fox2010-10-081-1/+4
| | | | | | | | | | | | Avoids a potential infinite loop. It was observed once, during an EC hacking/debugging session - not in regular operation. Signed-off-by: Daniel Drake <dsd@laptop.org> Cc: dilinger@queued.net Cc: <stable@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86, olpc: Rework BIOS signature checkDaniel Drake2010-09-231-33/+25
| | | | | | | | | | | | | | | | | | The XO-1.5 laptop is not currently detected as an OLPC machine because it fails this XO-1-centric check. Now that we have OLPC OFW support in the kernel, a more sensible check is to see if we found OFW during boot and check the architecture property. Also remove a now-meaningless codepath, as we're always going to have OFW support with OLPC. Signed-off-by: Daniel Drake <dsd@laptop.org> LKML-Reference: <20100923162846.D8D409D401B@zog.reactivated.net> Cc: Andres Salomon <dilinger@queued.net> Cc: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
* x86, olpc: Only enable PCI configuration type override on XO-1Daniel Drake2010-09-231-2/+4
| | | | | | | | | | | This configuration type override is for XO-1 only and must not happen on XO-1.5. Signed-off-by: Daniel Drake <dsd@laptop.org> LKML-Reference: <20100923162805.0F6549D401B@zog.reactivated.net> Cc: Andres Solomon <dilinger@queued.net> Cc: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
* x86, olpc: Constify an olpc_ofw() argAndres Salomon2010-07-301-1/+1
| | | | | | | | | | The arguments passed to OFW shouldn't be modified; update the 'args' argument of olpc_ofw to reflect this. This saves us some later casting away of consts. Signed-off-by: Andres Salomon <dilinger@queued.net> LKML-Reference: <20100628220029.1555ac24@debian> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
* x86, olpc: Use pr_debug() for EC commandsAndres Salomon2010-07-301-5/+3
| | | | | | | | | | Unconditionally printing EC debug messages was helpful when we were actually debugging the EC, but during normal operation it can get pretty annoying. Using pr_debug allows us finer-grained control. Signed-off-by: Andres Salomon <dilinger@queued.net> LKML-Reference: <20100616231928.16b539f0@dev.queued.net> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
* x86, olpc: Add support for calling into OpenFirmwareAndres Salomon2010-06-181-7/+5
| | | | | | | | | | | | | | | | | Add support for saving OFW's cif, and later calling into it to run OFW commands. OFW remains resident in memory, living within virtual range 0xff800000 - 0xffc00000. A single page directory entry points to the pgdir that OFW actually uses, so rather than saving the entire page table, we grab and install that one entry permanently in the kernel's page table. This is currently only used by the OLPC XO. Note that this particular calling convention breaks PAE and PAT, and so cannot be used on newer x86 hardware. Signed-off-by: Andres Salomon <dilinger@queued.net> LKML-Reference: <20100618174653.7755a39a@dev.queued.net> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
* x86, olpc: Use pci subarch init for OLPCThomas Gleixner2010-02-251-3/+7
| | | | | | | | | | | | | Replace the #ifdef'ed OLPC-specific init functions by a conditional x86_init function. If the function returns 0 we leave pci_arch_init, otherwise we continue. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: Andres Salomon <dilinger@collabora.co.uk> LKML-Reference: <43F901BD926A4E43B106BF17856F0755A318CE89@orsmsx508.amr.corp.intel.com> Signed-off-by: Jacob Pan <jacob.jun.pan@intel.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
* cs5535: move VSA2 checks into linux/cs5535.hAndres Salomon2009-12-151-2/+2
| | | | | | | | | | | Signed-off-by: Andres Salomon <dilinger@collabora.co.uk> Cc: Jordan Crouse <jordan@cosmicpenguin.net> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: john stultz <johnstul@us.ibm.com> Cc: Chris Ball <cjb@laptop.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* x86, olpc: fix model detection without OFWChris Ball2009-02-141-1/+1
| | | | | | | | | | | | | | | | | | Impact: fix "garbled display, laptop is unusable" bug Commit e51a1ac2dfca9ad869471e88f828281db7e810c0 ("x86, olpc: fix endian bug in openfirmware workaround") breaks model comparison on OLPC; the value 0xc2 needs to be scaled up by olpc_board(). The pre-patch version was wrong, but accidentally worked anyway (big-endian 0xc2 is big enough to satisfy all other board revisions, but little endian 0xc2 is not). Signed-off-by: Chris Ball <cjb@laptop.org> Cc: Andrew Morton <akpm@linux-foundation.org> Acked-by: Andres Salomon <dilinger@queued.net> Cc: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86, olpc: fix endian bug in openfirmware workaroundHarvey Harrison2008-09-241-3/+3
| | | | | | | | | | | | | | | | | | | | | | | Boardrev is always treated as a u32 everywhere else, no reason to byteswap the 0xc2 value. The only use is to print out if it is a prerelease board, the test being: (olpc_platform_info.boardrev & 0xf) < 8 Which is currently always true as be32_to_cpu(0xc2) & 0xf = 0 but I doubt that was the intention here. The consequences of the bug are pretty minor though (incorrect boardrev displayed in dmesg when ofw support not configured) Also annotate the temporary used to read the boardrev in the ofw case. The confusion was noticed by Sparse: arch/x86/kernel/olpc.c:206:32: warning: cast to restricted __be32 Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: olpc: add One Laptop Per Child architecture supportAndres Salomon2008-04-291-0/+260
This adds support for OLPC XO hardware. Open Firmware on XOs don't contain the VSA, so it is necessary to emulate the PCI BARs in the kernel. This also adds functionality for running EC commands, and a CONFIG_OLPC. A number of OLPC drivers depend upon CONFIG_OLPC. olpc_ec_timeout is a hack to work around Embedded Controller bugs. [akpm@linux-foundation.org: build fix] [akpm@linux-foundation.org: geode_has_vsa build fix] [akpm@linux-foundation.org: olpc_register_battery_callback doesn't exist] Signed-off-by: Andres Salomon <dilinger@debian.org> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Andi Kleen <ak@suse.de> Cc: Jordan Crouse <jordan.crouse@amd.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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