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* powerpc: Fix module building for gcc 4.5 and 64 bitStephen Rothwell2010-07-081-2/+2
| | | | | | | | Gcc 4.5 is now generating out of line register save and restore in the function prefix and postfix when we use -Os. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc: Add configurable -Werror for arch/powerpcMichael Ellerman2009-06-161-0/+2
| | | | | | | | | | | | | | | | | | | | Add the option to build the code under arch/powerpc with -Werror. The intention is to make it harder for people to inadvertantly introduce warnings in the arch/powerpc code. It needs to be configurable so that if a warning is introduced, people can easily work around it while it's being fixed. The option is a negative, ie. don't enable -Werror, so that it will be turned on for allyes and allmodconfig builds. The default is n, in the hope that developers will build with -Werror, that will probably lead to some build breaks, I am prepared to be flamed. It's not enabled for math-emu, which is a steaming pile of warnings. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc: Move dma-noncoherent.c from arch/powerpc/lib to arch/powerpc/mmBenjamin Herrenschmidt2009-05-271-1/+0
| | | | | | (pre-requisite to make the next patches more palatable) Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc/ppc32: static ftrace fixes for PPC32Steven Rostedt2008-11-281-0/+3
| | | | | | | | | | | | | | | | Impact: fix for PowerPC 32 code There were some early init code that was not safe for static ftrace to boot on my PowerBook. This code must only use relative addressing, and static mcount performs a compare of the ftrace_trace_function pointer, and gets that with an absolute address. In the early init boot up code, this will cause a fault. This patch removes tracing from the files containing the offending functions. Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* powerpc: Remove use of CONFIG_PPC_MERGEKumar Gala2008-08-041-2/+0
| | | | | | | | | Now that arch/ppc is gone and CONFIG_PPC_MERGE is always set, remove the dead code associated with !CONFIG_PPC_MERGE from arch/powerpc and include/asm-powerpc. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* powerpc: Add self-tests of the feature fixup codeMichael Ellerman2008-07-011-0/+1
| | | | | | | | | | | | | This commit adds tests of the feature fixup code, they are run during boot if CONFIG_FTR_FIXUP_SELFTEST=y. Some of the tests manually invoke the patching routines to check their behaviour, and others use the macros and so are patched during the normal patching done during boot. Because we have two sets of macros with different names, we use a macro to generate the test of the macros, very niiiice. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* powerpc: Split out do_feature_fixups() from cputable.cMichael Ellerman2008-07-011-0/+1
| | | | | | | | | | | | | The logic to patch CPU feature sections lives in cputable.c, but these days it's used for CPU features as well as firmware features. Move it into it's own file for neatness and as preparation for some additions. While we're moving the code, we pull the loop body logic into a separate routine, and remove a comment which doesn't apply anymore. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Acked-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* powerpc: Move code patching code into arch/powerpc/lib/code-patching.cMichael Ellerman2008-07-011-0/+2
| | | | | | | | | | | | | | | We currently have a few routines for patching code in asm/system.h, because they didn't fit anywhere else. I'd like to clean them up a little and add some more, so first move them into a dedicated C file - they don't need to be inlined. While we're moving the code, drop create_function_call(), it's intended caller never got merged and will be replaced in future with something different. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Acked-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Fix -Os kernel builds with newer gcc versionsKumar Gala2008-06-161-1/+1
| | | | | | | | | | | | | | | | | | | | | GCC 4.4.x looks to be adding support for generating out-of-line register saves/restores based on: http://gcc.gnu.org/ml/gcc-patches/2008-04/msg01678.html This breaks the kernel if we enable CONFIG_CC_OPTIMIZE_FOR_SIZE. To fix this we add the use the save/restore code from gcc and simplified it down for our needs (integer only). Additionally, we have to link this code into each module. The other solution was to add EXPORT_SYMBOL() which meant going through the trampoline which seemed nonsensical for these out-of-line routines. Finally, we add some checks to prom_init_check.sh to ignore the out-of-line save/restore functions. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] ppc: More compile fixesPaul Mackerras2008-05-121-1/+1
| | | | | | | | | | | | This fixes a few more miscellaneous compile problems with ARCH=ppc. 1. Don't compile devres.c on ARCH=ppc, it doesn't have ioremap_flags. 2. Include <asm/irq.h> in setup.c for the __DO_IRQ_CANON definition. 3. Include <linux/proc_fs.h> in residual.c for the definition of create_proc_read_entry. 4. Fix xchg_ptr to be a static inline to eliminate a compiler warning. Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] devres: Add devm_ioremap_prot()Emil Medve2008-05-051-0/+1
| | | | | | | | | | | | | | We provide an ioremap_flags, so this provides a corresponding devm_ioremap_prot. The slight name difference is at Ben Herrenschmidt's request as he plans on changing ioremap_flags to ioremap_prot in the future. Signed-off-by: Emil Medve <Emilian.Medve@Freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Acked-by: Tejun Heo <htejun@gmail.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] rheap: Changes config mechanismSylvain Munaut2007-10-161-4/+1
| | | | | | | | | Instead of having in the makefile all the option that requires rheap, we define a configuration symbol and when needed we make sure it's selected. Signed-off-by: Sylvain Munaut <tnt@246tNt.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* [POWERPC] Create and use CONFIG_WORD_SIZEStephen Rothwell2007-10-031-3/+4
| | | | | | | | | Linus made this suggestion for the x86 merge and this starts the process for powerpc. We assume that CONFIG_PPC64 implies CONFIG_PPC_MERGE and CONFIG_PPC_STD_MMU_32 implies CONFIG_PPC_STD_MMU. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Fix section mismatch in PCI codeStephen Rothwell2007-09-191-1/+1
| | | | | | | | | | | | | | Create a helper function (alloc_maybe_bootmem) that is marked __init_refok to limit the chances of mistakenly referring to other __init routines. WARNING: vmlinux.o(.text+0x2a9c4): Section mismatch: reference to .init.text:.__alloc_bootmem (between '.update_dn_pci_info' and '.pci_dn_reconfig_notifier') WARNING: vmlinux.o(.text+0x36430): Section mismatch: reference to .init.text:.__alloc_bootmem (between '.mpic_msi_init_allocator' and '.find_ht_magic_addr') WARNING: vmlinux.o(.text+0x5e804): Section mismatch: reference to .init.text:.__alloc_bootmem (between '.celleb_setup_phb' and '.celleb_fake_pci_write_config') WARNING: vmlinux.o(.text+0x5e8e8): Section mismatch: reference to .init.text:.__alloc_bootmem (between '.celleb_setup_phb' and '.celleb_fake_pci_write_config') WARNING: vmlinux.o(.text+0x5e968): Section mismatch: reference to .init.text:.__alloc_bootmem (between '.celleb_setup_phb' and '.celleb_fake_pci_write_config') Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] User rheap from arch/powerpc/libKumar Gala2007-05-091-2/+0
| | | | | | | Removed rheap in arch/ppc/lib and changed build system to use the one in arch/powerpc/lib. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* [STRING]: Move strcasecmp/strncasecmp to lib/string.cDavid S. Miller2007-04-261-3/+2
| | | | | | | We have several platforms using local copies of identical code. Signed-off-by: David S. Miller <davem@davemloft.net>
* [POWERPC] Added kprobes support to ppc32Kumar Gala2007-02-061-1/+1
| | | | | | | | Added kprobes to ppc32 platforms that have use single_step_exception. This excludes 4xx and anything Book-E since their debug mechanisms for single stepping are completely different. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* [POWERPC] 8xx: generic 8xx code arch/powerpc portVitaly Bordug2007-02-071-0/+2
| | | | | | | | | | | | | | | | | Including support for non-coherent cache, some mm-related things + relevant field in Kconfig and Makefiles. Also included rheap.o compilation if 8xx is defined. Non-coherent mapping were refined and renamed according to Cristoph Hellwig. Orphaned functions were cleaned up. [Also removed arch/ppc/kernel/dma-mapping.c, because otherwise compiling with ARCH=ppc for a non DMA-cache-coherent platform ends up with two copies of __dma_alloc_coherent etc. -- paulus.] Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Fix rheap alignment problemLi Yang2006-10-021-0/+1
| | | | | | | | | | | Honor alignment parameter in the rheap allocator. This is needed by qe_lib. Remove compile warning. Signed-off-by: Pantelis Antoniou <pantelis@embeddedalley.com> Signed-off-by: Li Yang <leoli@freescale.com> Acked-by: Kumar Galak <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* POWERPC: Move generic cpm2 stuff to powerpcVitaly Bordug2006-09-211-0/+5
| | | | | | | This moves the cpm2 common code and PIC stuff to the powerpc. Most of the files were just copied from ppc/, with minor tuning to make it compile, and, subsequently, work. Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
* [POWERPC] iseries: Move e2a()/strne2a() into their only callerMichael Ellerman2006-07-131-1/+0
| | | | | | | | The ASCII -> EBCDIC functions, e2a() and strne2a() are now only used in dt.c, so move them in there. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
* [POWERPC] Optimise some TOC usageAnton Blanchard2006-06-151-0/+4
| | | | | | | Micro-optimisation - add no-minimal-toc to some more arch/powerpc Makefiles. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [PATCH] remove powerpc bitops in favor of existing generic bitopsJon Mason2006-05-241-1/+0
| | | | | | | | | | | There already exists a big endian safe bitops implementation in lib/find_next_bit.c. The code in it is 90%+ common with the powerpc specific version, so the powerpc version is redundant. This patch makes the necessary changes to use the generic bitops in powerpc, and removes the powerpc specific version. Signed-off-by: Jon Mason <jdmason@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [PATCH] powerpc: Merge bitops.hDavid Gibson2005-11-011-4/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* powerpc: fix __strnlen_user in merge treeStephen Rothwell2005-11-011-1/+1
| | | | | | | | Change USER/KERNEL_DS so that the merged version of __strnlen_user can be used which allows us to complete the removal of arch/ppc64/lib/. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
* powerpc: Merge xmonPaul Mackerras2005-10-281-0/+2
| | | | | | | | | | | The merged version follows the ppc64 version pretty closely mostly, and in fact ARCH=ppc64 now uses the arch/powerpc/xmon version. The main difference for ppc64 is that the 'p' command to call show_state (which was always pretty dodgy) has been replaced by the ppc32 'p' command, which calls a given procedure (so in fact the old 'p' command behaviour can be achieved with 'p $show_state'). Signed-off-by: Paul Mackerras <paulus@samba.org>
* ppc64: use mem_64.S from powerpc/libStephen Rothwell2005-10-281-2/+1
| | | | | | and remove the same bits from ppc64/lib/string.S. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
* ppc64: use usercopy_64.c from powerpc/libStephen Rothwell2005-10-281-2/+2
| | | | | | since it is identical to usercopy.c from ppc64/lib. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
* ppc64: user strcase.c from powerpc/libStephen Rothwell2005-10-281-2/+3
| | | | | | since it is identical to strcase.c from ppc64/lib. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
* ppc64: use sstep.c from powerpc/libStephen Rothwell2005-10-281-1/+2
| | | | | | since it is identical to sstep.c from ppc64/lib. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
* ppc64: use memcpy_64.S from powerpc/libStephen Rothwell2005-10-281-3/+3
| | | | | | since it is identical to mempcy.S from ppc64/lib. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
* ppc64: use lockc.c from powerpc/libStephen Rothwell2005-10-281-3/+3
| | | | | | since it is effectively the same as locks.c from ppc64/lib. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
* ppc64: use copyuser_64.S from powerpc/libStephen Rothwell2005-10-281-2/+2
| | | | | | since it is identical to copyuser.S from ppc64/lib. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
* ppc64: use copypage_64.S from powerpc/libStephen Rothwell2005-10-281-2/+2
| | | | | | since it is identical to copypage.S from ppc64/lib. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
* ppc64: use e2a.c from powerpc/libStephen Rothwell2005-10-281-1/+1
| | | | | | since it is identical to e2a.c from ppc64/lib Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
* ppc64: use checksum_64.S from powerpcStephen Rothwell2005-10-281-1/+4
| | | | | | as it is identical to checksum.S from ppc64. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
* powerpc: Get 64-bit configs to compile with ARCH=powerpcPaul Mackerras2005-10-101-0/+4
| | | | | | | | This is a bunch of mostly small fixes that are needed to get ARCH=powerpc to compile for 64-bit. This adds setup_64.c from arch/ppc64/kernel/setup.c and locks.c from arch/ppc64/lib/locks.c. Signed-off-by: Paul Mackerras <paulus@samba.org>
* powerpc: Rename files to have consistent _32/_64 suffixesPaul Mackerras2005-10-101-3/+3
| | | | | | | | This doesn't change any code, just renames things so we consistently have foo_32.c and foo_64.c where we have separate 32- and 64-bit versions. Signed-off-by: Paul Mackerras <paulus@samba.org>
* powerpc: Merge enough to start building in arch/powerpc.Paul Mackerras2005-09-261-0/+9
This creates the directory structure under arch/powerpc and a bunch of Kconfig files. It does a first-cut merge of arch/powerpc/mm, arch/powerpc/lib and arch/powerpc/platforms/powermac. This is enough to build a 32-bit powermac kernel with ARCH=powerpc. For now we are getting some unmerged files from arch/ppc/kernel and arch/ppc/syslib, or arch/ppc64/kernel. This makes some minor changes to files in those directories and files outside arch/powerpc. The boot directory is still not merged. That's going to be interesting. Signed-off-by: Paul Mackerras <paulus@samba.org>
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