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* [POWERPC] Reworking machine check handling and Fix 440/440ABenjamin Herrenschmidt2007-12-231-4/+10
| | | | | | | | | | | | | | | This adds a cputable function pointer for the CPU-side machine check handling. The semantic is still the same as the old one, the one in ppc_md. overrides the one in cputable, though ultimately we'll want to change that so the CPU gets first. This removes CONFIG_440A which was a problem for multiplatform kernels and instead fixes up the IVOR at runtime from a setup_cpu function. The "A" version of the machine check also tweaks the regs->trap value to differenciate the 2 versions at the C level. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
* [POWERPC] Fix swapper_pg_dir size when CONFIG_PTE_64BIT=y on FSL_BOOKEKumar Gala2007-12-061-1/+1
| | | | | | | | | The size of swapper_pg_dir is 8k instead of 4k when using 64-bit PTEs (CONFIG_PTE_64BIT). This was reported by Cedric Hombourger <chombourger@gmail.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* [POWERPC] Use PAGE_OFFSET to tell if an address is user/kernel in SW TLB ↵Kumar Gala2007-10-111-3/+3
| | | | | | | | | | handlers Move to using PAGE_OFFSET instead of TASK_SIZE or KERNELBASE value on 6xx/40x/44x/fsl-booke to determine if the faulting address is a kernel or user space address. This mimics how the macro is_kernel_addr() works. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* [POWERPC] 4xx: Move 440EP(x) FPU setup from head_44x to cpu_setup_4xxValentine Barshak2007-10-031-10/+0
| | | | | | | | | | The PowerPC 440EP(x) FPU init is currently done in head_44x under ifdefs. Since we should support more then one board in the same kernel, we move FPU initialization code from head_44x to cpu_setup_44x and add cpu_setup callbacks for 440EP(x). Signed-off-by: Valentine Barshak <vbarshak@ru.mvista.com> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
* [POWERPC] Remove cmd_line from head*.SStephen Rothwell2007-09-191-8/+0
| | | | | | | It is just a C char array, so declare it thusly. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Fix modpost warnings from head*.S on ppc32Kumar Gala2007-09-141-3/+3
| | | | | | | | | | | | | | | We get warnings like the following from the various ppc32 head*.S files: WARNING: vmlinux.o(.text+0x358): Section mismatch: reference to .init.text:early_init (between 'skpinv' and 'interrupt_base') WARNING: vmlinux.o(.text+0x380): Section mismatch: reference to .init.text:machine_init (between 'skpinv' and 'interrupt_base') WARNING: vmlinux.o(.text+0x384): Section mismatch: reference to .init.text:MMU_init (between 'skpinv' and 'interrupt_base') WARNING: vmlinux.o(.text+0x3aa): Section mismatch: reference to .init.text:start_kernel (between 'skpinv' and 'interrupt_base') WARNING: vmlinux.o(.text+0x3ae): Section mismatch: reference to .init.text:start_kernel (between 'skpinv' and 'interrupt_base') Added a .text.head section simliar to what other architectures do since modpost already excludes this from its warnings. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* [POWERPC] PowerPC 440EPx: Sequoia board supportValentine Barshak2007-09-071-1/+1
| | | | | | | | AMCC PPC440EPx Sequoia board support. Signed-off-by: Valentine Barshak <vbarshak@ru.mvista.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
* [POWERPC] Early serial debug support for PPC44xDavid Gibson2007-05-081-21/+13
| | | | | | | | | | This adds support for early serial debugging via the built in port on IBM/AMCC PowerPC 44x CPUs. It uses a bolted TLB entry in address space 1 for the UART's mapping, allowing robust debugging both before and after the initialization of the MMU. Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Add powerpc/platforms/44x, disable platforms/4xx for nowDavid Gibson2007-05-081-10/+0
| | | | | | | | | | | | | | | | | | | This prepares for Ebony/440 support by creating an arch/powerpc/platforms/44x directory. It is populated with a single misc_44x.S file, into which is moved the 44x specific reset code from head_44x.S (on the grounds that we should really stop clogging up the head_* files with random asm helper routines). At the same time, we disable the (empty save Kconfig and Makefile) arch/powerpc/platforms/4xx directory from the arch/powerpc/platforms Makefile. Contrary to the comment in arch/powerpc/platforms/4xx/Makefile, attempting to build such an empty Makefile will fail, thus breaking compile for the 44x platforms we're about to add. It can go back in once we start porting some of the 40x platforms (and thus it becomes non-empty). Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Revise PPC44x MMU code for arch/powerpcDavid Gibson2007-05-021-2/+2
| | | | | | | | | | | | This patch takes the definitions for the PPC44x MMU (a software loaded TLB) from asm-ppc/mmu.h, cleans them up of things no longer necessary in arch/powerpc and puts them in a new asm-powerpc/mmu_44x.h file. It also substantially simplifies arch/powerpc/mm/44x_mmu.c and makes a couple of small fixes necessary for the 44x MMU code to build and work properly in arch/powerpc. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Remove ibm4{xx,4x}.h from arch/powerpcDavid Gibson2007-02-131-2/+0
| | | | | | | | | ARCH=powerpc should not use the ghastly un-multiplatformable tangle of includes that starts with asm-ppc/ibm4xx.h. This patch removes a compile-breaking include of it from head_44x.S. Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* Remove obsolete #include <linux/config.h>Jörn Engel2006-06-301-1/+0
| | | | | Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* [PATCH] powerpc: trivial: modify comments to refer to new location of filesJon Mason2006-02-101-2/+0
| | | | | | | | | This patch removes all self references and fixes references to files in the now defunct arch/ppc64 tree. I think this accomplises everything wanted, though there might be a few references I missed. Signed-off-by: Jon Mason <jdmason@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [PATCH] powerpc: replace use of _GLOBAL with .globlKumar Gala2005-10-171-7/+11
| | | | | | | | The _GLOBAL() macro is for text symbols only. Changed to using .globl for .data symbols. Signed-off-by: Kumar K. Gala <kumar.gala@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* powerpc: merge idle_power4.S and trapc.sStephen Rothwell2005-10-011-7/+7
| | | | | | | | | | | | | Use idle_power4.S from ppc64 as we are not going to support 32 bit power4 in the merged tree. Merge ppc64 traps.c into powerpc traps.c: use ppc64 versions of exception routine names (as they don't have StudlyCaps) make all the versions if die() have the same prototype Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
* powerpc: Merge enough to start building in arch/powerpc.Paul Mackerras2005-09-261-0/+778
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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