kernel.git/arch/powerpc/kernel/head_32.S, branch linux-2.6.28.y

powerpc: Fix 32-bit SMP boot on CHRP

2008-10-14T23:13:29Z

prom_init was changed to take a new argument, the address where the kernel is loaded, which is now used to copy the SMP spin loop down before use. However, only head_64.S was adapted to pass this new value, not head_32.S, thus breaking SMP boot on 32-bit SMP CHRP machines. Signed-off-by: Benjamin Herrenschmidt

POWERPC: Allow 32-bit hashed pgtable code to support 36-bit physical

2008-09-24T21:29:44Z

This rearranges a bit of code, and adds support for 36-bit physical addressing for configs that use a hashed page table. The 36b physical support is not enabled by default on any config - it must be explicitly enabled via the config system. This patch *only* expands the page table code to accomodate large physical addresses on 32-bit systems and enables the PHYS_64BIT config option for 86xx. It does *not* allow you to boot a board with more than about 3.5GB of RAM - for that, SWIOTLB support is also required (and coming soon). Signed-off-by: Becky Bruce Signed-off-by: Kumar Gala

powerpc: Fix TLB invalidation on boot on 32-bit

2008-08-18T04:22:34Z

The intent of "flush_tlbs" is to invalidate all TLB entries by doing a TLB invalidate instruction for all pages in the address range 0 to 0x00400000. A loop counter is set up at the high value and decremented by page size. However, the loop is only done once as the sense of the conditional branch at the loop end does not match the setup/decrement. This fixes it to do the whole range by correcting the branch condition. Signed-off-by: Rocky Craig Signed-off-by: Paul Mackerras

powerpc: Make load_up_fpu and load_up_altivec callable

2008-07-01T01:28:45Z

Make load_up_fpu and load_up_altivec callable so they can be reused by the VSX code. Signed-off-by: Michael Neuling Signed-off-by: Paul Mackerras

[POWERPC] Move stackframe definitions to common header

2008-04-18T05:37:18Z

This moves various definitions used all over the place to parse stack frames to ptrace.h so only one definition is needed. Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Paul Mackerras

[POWERPC] Remove dead code at KernelAltiVec

2008-02-26T11:17:03Z

This code isn't referenced anywhere, so remove it. Signed-off-by: Dale Farnsworth Signed-off-by: Paul Mackerras

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

2007-12-06T19:11:04Z

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

2007-10-11T18:36:52Z

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.

2007-10-04T01:35:43Z

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

2007-09-19T05:25:34Z

It is just a C char array, so declare it thusly. Signed-off-by: Stephen Rothwell Signed-off-by: Paul Mackerras