aboutsummaryrefslogtreecommitdiffstats
path: root/arch/ppc
Commit message (Collapse)AuthorAgeFilesLines
* [PATCH] ppc: fix-up schedule_timeout() usageNishanth Aravamudan2005-11-072-12/+8
| | | | | | | | | | | | Use schedule_timeout_interruptible() instead of set_current_state()/schedule_timeout() to reduce kernel size. Also use human-time conversion functions instead of hard-coded HZ division to avoid rounding errors. Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] rapidio: message interface updatesMatt Porter2005-11-071-5/+11
| | | | | | | | | Updates the RIO messaging interface to pass a device instance into the event registeration and callbacks. Signed-off-by: Matt Porter <mporter@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] RapidIO support: ppc32Matt Porter2005-11-079-34/+1091
| | | | | | | | | Adds PPC32 RIO support. Init code for the MPC85xx RIO ports and glue for the STx GP3 board to use it. Signed-off-by: Matt Porter <mporter@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fix remaining missing includesTim Schmielau2005-11-071-0/+1
| | | | | | | | | | Fix more include file problems that surfaced since I submitted the previous fix-missing-includes.patch. This should now allow not to include sched.h from module.h, which is done by a followup patch. Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: Add CPM1 config optionPantelis Antoniou2005-11-071-0/+10
| | | | | | | | | | Kconfig patch needed by fs_enet to work. Works like CONFIG_CPM2. Cc: Kumar <kumar.gala@freescale.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Matt Porter <mporter@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: Add missing initrd header on ppc440Matt Porter2005-11-071-0/+1
| | | | | | | | | This missing initrd header slipped though last time. Signed-off-by: Stefan Roese <sr@denx.de> Signed-off-by: Matt Porter <mporter@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: Remove internal PCI arbiter check on PPC40xMatt Porter2005-11-071-7/+0
| | | | | | | | | | | | On PPC405GP/GPR it should be possible to enable PCI support, even when the internal PCI arbiter is disabled (e.g. when using an external PCI arbiter). The removed code didn't allow this, and also generated a warning on PPC405EP platforms. Signed-off-by: Stefan Roese <sr@denx.de> Signed-off-by: Matt Porter <mporter@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: cleanup AMCC PPC40x eval boards to support U-BootMatt Porter2005-11-0711-141/+217
| | | | | | | | | | | | | | Cleanup PPC40x eval boards (bubinga, walnut and sycamore) to support U-Boot as bootloader. The OpenBIOS bd_info struct is not used in the kernel anymore (only U-Boot now). uImage (U-Boot) tested on walnut, sycamore and bubinga zImage (OpenBIOS) tested on sycamore, bubinga and ebony Signed-off-by: Stefan Roese <sr@denx.de> Signed-off-by: Matt Porter <mporter@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: Add Yucca (440SPe eval board) platformRoland Dreier2005-11-076-2/+523
| | | | | | | | | Add support for AMCC PowerPC 440SPe "Yucca" eval board platform. Signed-off-by: Roland Dreier <rolandd@cisco.com> Cc: Matt Porter <mporter@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: Add 440SPe supportRoland Dreier2005-11-0710-6/+852
| | | | | | | | | | Add support for the AMCC PowerPC 440SPe SoC, including PCI Express in root port mode. Signed-off-by: Roland Dreier <rolandd@cisco.com> Cc: Matt Porter <mporter@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: Dump error status for both PLB segments on 440SPRoland Dreier2005-11-071-0/+11
| | | | | | | | | | | | The PowerPC 440SP SoC has two Processor Local Bus (PLB) segments (a high-throughput segment and a low-latency segment). Fix our PLB register definitions to cope with this, and add code to dump the status of both segments when a machine check occurs. Signed-off-by: Roland Dreier <rolandd@cisco.com> Cc: Matt Porter <mporter@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: Allow ERPN for early serial to depend on CPU typeRoland Dreier2005-11-071-2/+2
| | | | | | | | | | | | | The PowerPC 440SPe supports up to 16 GB of RAM, and therefore its IO registers are at 0x4_xxxx_xxxx instead of being at 0x1_xxxx_xxxx like most other PPC 440 chips. To allow for this, this patch moves the definition of the ERPN used for mapping UART0 from being hard-coded in the head_44x.S assembly code to being defined in ibm44x.h. Signed-off-by: Roland Dreier <rolandd@cisco.com> Signed-off-by: Matt Porter <mporter@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: add watchdog & RTC support for Marvell EV64360BP boardLee Nicks2005-11-073-20/+66
| | | | | | | | This patch adds watchdog, RTC support for Marvell EV64360BP board. Signed-off-by: Lee Nicks <allinux@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* powerpc: Merge smp.c and smp.hPaul Mackerras2005-11-052-2/+1
| | | | | | | This also moves setup_cpu_maps to setup-common.c (calling it smp_setup_cpu_maps) and uses it on both 32-bit and 64-bit. Signed-off-by: Paul Mackerras <paulus@samba.org>
* Merge with PaulusMichael Ellerman2005-11-044-7/+12
|\
| * [PATCH] ppc32: Fixed warning in m8xx_setup.cVitaly Bordug2005-11-031-0/+1
| | | | | | | | | | | | | | This adds missing header and thus fix the warning issued by ming prototype. Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [PATCH] ppc32 8xx: fix cpm_dpalloc() commentMarcelo Tosatti2005-11-031-3/+2
| | | | | | | | | | | | | | Current comment on top of m8xx_cpm_dpinit is wrong. Signed-off-by: Marcelo Tosatti <marcelo.tosatti@cyclades.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [PATCH] ppc32 8xx: export symbols required for modular IDEMarcelo Tosatti2005-11-031-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | This fixes these warnings: Building modules, stage 2. MODPOST *** Warning: "__ide_mm_insl" [drivers/ide/ide-core.ko] undefined! *** Warning: "__ide_mm_outsw" [drivers/ide/ide-core.ko] undefined! *** Warning: "__ide_mm_insw" [drivers/ide/ide-core.ko] undefined! *** Warning: "__ide_mm_outsl" [drivers/ide/ide-core.ko] undefined! Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [PATCH] ppc: Fix build warnings in arch/ppc/kernel/traps.cBecky Bruce2005-11-031-4/+4
| | | | | | | | | | | | | | | | | | The latest updates to bug.h generate build warnings in traps.c in arch/ppc. Fix print format specifiers to account for change of line type to long from int. Signed-off-by: Becky Bruce <becky.bruce@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | powerpc: Merge asm-ppc/kexec.h and asm-ppc64/kexec.hMichael Ellerman2005-11-031-1/+1
|/ | | | | | | | | | | | | Merge include/asm-ppc/kexec.h and include/asm-ppc64/kexec.h. The only thing that's really changed is that we now allocate crash_notes properly on PPC32. It's address is exported via sysfs, so it's not correct for it to be a pointer. I've also removed some of the "we don't use this" comments, because they're wrong (or perhaps were referring only to arch code). Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
* Merge ../linux-2.6Paul Mackerras2005-11-0214-4/+14
|\
| * Merge master.kernel.org:/home/rmk/linux-2.6-drvmodelLinus Torvalds2005-10-3114-4/+14
| |\ | | | | | | | | | Manual #include fixups for clashes - there may be some unnecessary
| | * Create platform_device.h to contain all the platform device details.Russell King2005-10-2914-4/+14
| | | | | | | | | | | | | | | | | | | | | | | | Convert everyone who uses platform_bus_type to include linux/platform_device.h. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
* | | [PATCH] powerpc: Merge bitops.hDavid Gibson2005-11-012-127/+2
|/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Here's a revised version. This re-introduces the set_bits() function from ppc64, which I removed because I thought it was unused (it exists on no other arch). In fact it is used in the powermac interrupt code (but not on pSeries). - We use LARXL/STCXL macros to generate the right (32 or 64 bit) instructions, similar to LDL/STL from ppc_asm.h, used in fpu.S - ppc32 previously used a full "sync" barrier at the end of test_and_*_bit(), whereas ppc64 used an "isync". The merged version uses "isync", since I believe that's sufficient. - The ppc64 versions of then minix_*() bitmap functions have changed semantics. Previously on ppc64, these functions were big-endian (that is bit 0 was the LSB in the first 64-bit, big-endian word). On ppc32 (and x86, for that matter, they were little-endian. As far as I can tell, the big-endian usage was simply wrong - I guess no-one ever tried to use minixfs on ppc64. - On ppc32 find_next_bit() and find_next_zero_bit() are no longer inline (they were already out-of-line on ppc64). - For ppc64, sched_find_first_bit() has moved from mmu_context.h to the merged bitops. What it was doing in mmu_context.h in the first place, I have no idea. - The fls() function is now implemented using the cntlzw instruction on ppc64, instead of generic_fls(), as it already was on ppc32. - For ARCH=ppc, this patch requires adding arch/powerpc/lib to the arch/ppc/Makefile. This in turn requires some changes to arch/powerpc/lib/Makefile which didn't correctly handle ARCH=ppc. Built and running on G5. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | Merge ../linux-2.6 by handPaul Mackerras2005-10-317-29/+9
|\ \
| * | [PATCH] fix missing includesTim Schmielau2005-10-301-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I recently picked up my older work to remove unnecessary #includes of sched.h, starting from a patch by Dave Jones to not include sched.h from module.h. This reduces the number of indirect includes of sched.h by ~300. Another ~400 pointless direct includes can be removed after this disentangling (patch to follow later). However, quite a few indirect includes need to be fixed up for this. In order to feed the patches through -mm with as little disturbance as possible, I've split out the fixes I accumulated up to now (complete for i386 and x86_64, more archs to follow later) and post them before the real patch. This way this large part of the patch is kept simple with only adding #includes, and all hunks are independent of each other. So if any hunk rejects or gets in the way of other patches, just drop it. My scripts will pick it up again in the next round. Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | [PATCH] jiffies_64 cleanupThomas Gleixner2005-10-301-5/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | Define jiffies_64 in kernel/timer.c rather than having 24 duplicated defines in each architecture. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | [PATCH] unify sys_ptrace prototypeChristoph Hellwig2005-10-301-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make sure we always return, as all syscalls should. Also move the common prototype to <linux/syscalls.h> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Miklos Szeredi <miklos@szeredi.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | [PATCH] remove some more check_region stuffJeff Garzik2005-10-301-5/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Removed some more references to check_region(). I checked these changes into the 'checkreg' branch of rsync://rsync.kernel.org/pub/scm/linux/kernel/git/jgarzik/misc-2.6.git The only valid references remaining are in: drivers/scsi/advansys.c drivers/scsi/BusLogic.c drivers/cdrom/sbpcd.c sound/oss/pss.c Remove last vestiges of ide_check_region() drivers/char/specialix: trim trailing whitespace drivers/char/specialix: eliminate use of check_region() Remove outdated and unused references to check_region() [sound oss] remove check_region() usage from cs4232, wavfront [netdrvr eepro] trim trailing whitespace [netdrvr eepro] remove check_region() usage Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | [PATCH] mm: init_mm without ptlockHugh Dickins2005-10-293-12/+2
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | First step in pushing down the page_table_lock. init_mm.page_table_lock has been used throughout the architectures (usually for ioremap): not to serialize kernel address space allocation (that's usually vmlist_lock), but because pud_alloc,pmd_alloc,pte_alloc_kernel expect caller holds it. Reverse that: don't lock or unlock init_mm.page_table_lock in any of the architectures; instead rely on pud_alloc,pmd_alloc,pte_alloc_kernel to take and drop it when allocating a new one, to check lest a racing task already did. Similarly no page_table_lock in vmalloc's map_vm_area. Some temporary ugliness in __pud_alloc and __pmd_alloc: since they also handle user mms, which are converted only by a later patch, for now they have to lock differently according to whether or not it's init_mm. If sources get muddled, there's a danger that an arch source taking init_mm.page_table_lock will be mixed with common source also taking it (or neither take it). So break the rules and make another change, which should break the build for such a mismatch: remove the redundant mm arg from pte_alloc_kernel (ppc64 scrapped its distinct ioremap_mm in 2.6.13). Exceptions: arm26 used pte_alloc_kernel on user mm, now pte_alloc_map; ia64 used pte_alloc_map on init_mm, now pte_alloc_kernel; parisc had bad args to pmd_alloc and pte_alloc_kernel in unused USE_HPPA_IOREMAP code; ppc64 map_io_page forgot to unlock on failure; ppc mmu_mapin_ram and ppc64 im_free took page_table_lock for no good reason. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] gfp_t: remaining bits of arch/*Al Viro2005-10-281-2/+2
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] gfp_t: soundAl Viro2005-10-282-3/+3
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] gfp_t: dma-mapping (ppc)Al Viro2005-10-281-2/+2
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] ppc32: Tell userland about lack of standard TBBenjamin Herrenschmidt2005-10-121-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Glibc is about to get some new high precision timer stuff that relies on the standard timebase of the PPC architecture. However, some (rare & old) CPUs do not have such timebase and it is a bit annoying to have your stuff just crash because you are running on the wrong CPU... This exposes to userland a CPU feature bit that tells that the current processor doesn't have a standard timebase. It's negative logic so that glibc will still "just work" on older kernels (it will just be unhappy on those old CPUs but that doesn't really matter as distro tend to update glibc & kernel at the same time). Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | ppc: remove duplicate export of cur_cpu_specPaul Mackerras2005-10-311-1/+0
| | | | | | | | Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [PATCH] ppc32: ppc_sys fixes for 8xx and 82xxVitaly Bordug2005-10-296-2/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes a numbers of issues regarding to that both 8xx and 82xx began to use ppc_sys model: - Platform is now identified by default deviceless SOC, if no BOARD_CHIP_NAME is specified in the bard-specific header. For the list of supported names refer to (arch/ppc/syslib/) mpc8xx_sys.c and mpc82xx_sys.c for 8xx and 82xx respectively. - Fixed a bug in identification by name - if the name was not found, it returned -1 instead of default deviceless ppc_spec. - fixed devices amount in the 8xx platform system descriptions Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com> Signed-off-by: Marcelo Tosatti <marcelo.tosatti@cyclades.com> Signed-off-by: Kumar Gala <kumar.gala@freescale.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [PATCH] ppc32: 85xx PHY Platform UpdateAndy Fleming2005-10-297-74/+119
| | | | | | | | | | | | | | | | | | This patch updates the 85xx platform code to support the new PHY Layer. Signed-off-by: Andy Fleming <afleming@freescale.com> Signed-off-by: Kumar Gala <Kumar.gala@freescale.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [PATCH] chrp_pegasos_eth: Added Marvell Discovery II SRAM supportNicolas DET2005-10-291-6/+118
| | | | | | | | | | | | | | | | | | | | | | Add proper entry to support the Marvell MV64361 (Marvell Discovery II) SRAM. This feature may be used by the mv643xx_eth driver. Signed-off-by: Nicolas DET <det.nicolas@free.fr> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [PATCH] ppc32: nvram driver for chrpOlaf Hering2005-10-293-2/+87
| | | | | | | | | | | | | | | | | | | | This implements a nvram acccess method, similar to arch/ppc64/kernel/pSeries_nvram.c tested on CHRP B50. Signed-off-by: Olaf Hering <olh@suse.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [PATCH] ppc: make phys_mem_access_prot() work with pfns instead of addressesRoland Dreier2005-10-292-8/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Change the phys_mem_access_prot() function to take a pfn instead of an address. This allows mmap64() to work on /dev/mem for addresses above 4G on 32-bit architectures. We start with a pfn in mmap_mem(), so there's no need to convert to an address; in fact, it's actively bad, since the conversion can overflow when the address is above 4G. Similarly fix the ppc32 page_is_ram() function to avoid a conversion to an address by directly comparing to max_pfn. Working with max_pfn instead of high_memory fixes page_is_ram() to give the right answer for highmem pages. Signed-off-by: Roland Dreier <rolandd@cisco.com> Cc: Anton Blanchard <anton@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [PATCH] ppc32: update xmon help textOlaf Hering2005-10-291-2/+7
| | | | | | | | | | | | | | | | | | Mention a few more commands in xmon. System.map processing was replaced with kallsyms. Signed-off-by: Olaf Hering <olh@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [PATCH] ppc32: #ifdef out ALTIVEC specific code in __switch_toMarcelo Tosatti2005-10-291-0/+2
| | | | | | | | | | | | | | | | #ifdef out an ALTIVEC specific tweak in __switch_to() Signed-off-by: Marcelo Tosatti <marcelo.tosatti@cyclades.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [PATCH] ppc32: Cleanup AMCC PPC44x eval board U-Boot supportMatt Porter2005-10-296-56/+53
| | | | | | | | | | | | | | | | | | | | Cleanup PPC440 eval boards (bamboo, ebony, luan and ocotea) to better support U-Boot as bootloader. Signed-off-by: Stefan Roese <sr@denx.de> Signed-off-by: Matt Porter <mporter@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [PATCH] ppc32 8xx: use io accessor macros instead of direct memory referenceMarcelo Tosatti2005-10-294-52/+44
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Convert core 8xx drivers to use in_xxxbe/in_xxx macros instead of direct memory references. Other than making IO accesses explicit (which is a plus for readability), a common set of macros provides a unified place for the volatile flag to constraint compiler code reordering. There are several unlucky places at the moment which lack the volatile flag. Signed-off-by: Marcelo Tosatti <marcelo.tosatti@cyclades.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [PATCH] ppc: prevent GCC 4 from generating AltiVec instructions in kernelLee Nicks2005-10-291-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Depending on how GCC is built, GCC 4 may generate altivec instructions without user explicitly requesting vector operations in the code. Although this is a performance booster for user applications, it is a problem for kernel. This patch explicitly instruct GCC to NOT generate altivec instructions while building the kernel. Here are some test cases I ran. (1) build gcc 4.0.1 with '--with-cpu=7450 --enable-altivec --enable-cxx-flags=-mcpu=7450', and use this gcc to build kernel WITHOUT this kernel patch. Kernel fail to boot up on a 7450 board because of altivec instructions in kernel. (2) build gcc 4.0.1 with "--with-cpu=7450 --enable-altivec --enable-cxx-flags=-mcpu=7450", and use this gcc to build kernel WITH this kernel patch. Kernel boot up on a 7450 board without any problem. (3) build gcc 4.0.1 with "--with-cpu=750 --enable-cxx-flags=-mcpu=750", and use this gcc to build kernel with or without this kernel patch. Kernel boot up on a 7450 board without any problem. This patch should also work with GCC 3 or even earlier GCC 2.95.3. Signed-off-by: Lee Nicks <allinux@gmail.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [PATCH] powerpc: Moved dcr support to arch/powerpcKumar Gala2005-10-272-43/+0
| | | | | | | | | | Signed-off-by: Kumar K. Gala <kumar.gala@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [PATCH] powerpc: Fix handling of fpscr on 64-bitDavid Gibson2005-10-275-32/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The recent merge of fpu.S broken the handling of fpscr for ARCH=powerpc and CONFIG_PPC64=y. FP registers could be corrupted, leading to strange random application crashes. The confusion arises, because the thread_struct has (and requires) a 64-bit area to save the fpscr, because we use load/store double instructions to get it in to/out of the FPU. However, only the low 32-bits are actually used, so we want to treat it as a 32-bit quantity when manipulating its bits to avoid extra load/stores on 32-bit. This patch replaces the current definition with a structure of two 32-bit quantities (pad and val), to clarify things as much as is possible. The 'val' field is used when manipulating bits, the structure itself is used when obtaining the address for loading/unloading the value from the FPU. While we're at it, consolidate the 4 (!) almost identical versions of cvt_fd() and cvt_df() (arch/ppc/kernel/misc.S, arch/ppc64/kernel/misc.S, arch/powerpc/kernel/misc_32.S, arch/powerpc/kernel/misc_64.S) into a single version in fpu.S. The new version takes a pointer to thread_struct and applies the correct offset itself, rather than a pointer to the fpscr field itself, again to avoid confusion as to which is the correct field to use. Finally, this patch makes ARCH=ppc64 also use the consolidated fpu.S code, which it previously did not. Built for G5 (ARCH=ppc64 and ARCH=powerpc), 32-bit powermac (ARCH=ppc and ARCH=powerpc) and Walnut (ARCH=ppc, CONFIG_MATH_EMULATION=y). Booted on G5 (ARCH=powerpc) and things which previously fell over no longer do. Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | powerpc: Fixes to get the Longtrail CHRP a bit furtherPaul Mackerras2005-10-262-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Talk about buggy firmware... the OF on the Longtrail returns 0 from the claim client service rather than -1 when the claim fails. It also has no device_type on the /memory node and blows up if the output buffer for package-to-path is too big. This also fixes a bug with calling alloc_up with align == 0, where we did _ALIGN_UP(alloc_bottom, 0) which will end up as 0. Lastly, we now check the return value (in r3) from calling the prom, and return -1 from call_prom if we get a negative value back. That is supposed to indicate that the requested client service doesn't exist. Signed-off-by: Paul Mackerras <paulus@samba.org>
* | powerpc: Merge i8259.c into arch/powerpc/sysdevPaul Mackerras2005-10-2611-259/+32
| | | | | | | | | | | | | | | | | | | | | | | | This changes the parameters for i8259_init so that it takes two parameters: a physical address for generating an interrupt acknowledge cycle, and an interrupt number offset. i8259_init now sets the irq_desc[] for its interrupts; all the callers were doing this, and that code is gone now. This also defines a CONFIG_PPC_I8259 symbol to select i8259.o for inclusion, and makes the platforms that need it select that symbol. Signed-off-by: Paul Mackerras <paulus@samba.org>
* | ppc: Use the indirect_pci.c from arch/powerpc/sysdevPaul Mackerras2005-10-264-154/+39
| | | | | | | | | | | | | | | | This defines a CONFIG_INDIRECT_PCI symbol to control whether it gets used or not, and fixes the Kconfig to select that symbol for platforms that need it. Signed-off-by: Paul Mackerras <paulus@samba.org>
generated by cgit v1.1 at 2024-12-26 04:38:16 +0000