linux-toradex.git/arch/powerpc/kernel/head_32.S, branch v2.6.25.12

[POWERPC] Fix swapper_pg_dir size when CONFIG_PTE_64BIT=y on FSL_BOOKE

2007-12-06T19:11:04+00:00

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 

Signed-off-by: Kumar Gala

[POWERPC] Use PAGE_OFFSET to tell if an address is user/kernel in SW TLB handlers

2007-10-11T18:36:52+00:00

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

[POWERPC] Add early debug console for CPM serial ports.

2007-10-04T01:35:43+00:00

This code assumes that the ports have been previously set up, with
buffers in DPRAM.

Signed-off-by: Scott Wood 
Acked-by: David Gibson 
Signed-off-by: Kumar Gala

[POWERPC] Remove cmd_line from head*.S

2007-09-19T05:25:34+00:00

It is just a C char array, so declare it thusly.

Signed-off-by: Stephen Rothwell 
Signed-off-by: Paul Mackerras

[POWERPC] Fix modpost warnings from head*.S on ppc32

2007-09-14T13:53:36+00:00

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

[POWERPC] Check _PAGE_RW and _PAGE_PRESENT on kernel addresses

2007-09-13T15:33:23+00:00

Previously, the TLB miss handlers assumed that pages above KERNELBASE are
always present and read/write.  This assumption is false in the case of
CONFIG_DEBUG_PAGEALLOC.

Signed-off-by: Scott Wood 
Signed-off-by: Paul Mackerras

[POWERPC] Remove the dregs of APUS support from arch/powerpc

2007-06-14T12:30:15+00:00

APUS (the Amiga Power-Up System) is not supported under arch/powerpc
and it's unlikely it ever will be.  Therefore, this patch removes the
fragments of APUS support code from arch/powerpc which have been
copied from arch/ppc.

A few APUS references are left in asm-powerpc in .h files which are
still used from arch/ppc.

Signed-off-by: David Gibson 
Signed-off-by: Paul Mackerras

[POWERPC] Remove the broken Gemini support

2007-01-24T10:13:58+00:00

Signed-off-by: Adrian Bunk 
Signed-off-by: Paul Mackerras

[POWERPC] Add support for FP emulation for the e300c2 core

2006-12-08T08:43:30+00:00

The e300c2 has no FPU.  Its MSR[FP] is grounded to zero.  If an attempt
is made to execute a floating point instruction (including floating-point
load, store, or move instructions), the e300c2 takes a floating-point
unavailable interrupt.

This patch adds support for FP emulation on the e300c2 by declaring a
new CPU_FTR_FP_TAKES_FPUNAVAIL, where FP unavail interrupts are
intercepted and redirected to the ProgramCheck exception path for
correct emulation handling.

(If we run out of CPU_FTR bits we could look to reclaim this bit by adding
support to test the cpu_user_features for PPC_FEATURE_HAS_FPU instead)

It adds a nop to the exception path for 32-bit processors with a FPU.

Signed-off-by: Kim Phillips 
Signed-off-by: Kumar Gala

Remove obsolete #include

2006-06-30T17:25:36+00:00

Signed-off-by: Jörn Engel 
Signed-off-by: Adrian Bunk