Commit Graph

157 Commits

Author SHA1 Message Date
Paul Mundt 19f9a34f87 sh: Initial vsyscall page support.
This implements initial support for the vsyscall page on SH.
At the moment we leave it configurable due to having nommu
to support from the same code base. We hook it up for the
signal trampoline return at present, with more to be added
later, once uClibc catches up.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 18:33:49 +09:00
Paul Mundt 8c12b5dc13 sh: Clean up PAGE_SIZE definition for assembly use.
We want to be able to use PAGE_SIZE all over the place,
this is the same approach adopted by other architectures..

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 18:31:06 +09:00
Paul Mundt 72c35543f8 sh: Support for L2 cache on newer SH-4A CPUs.
This implements preliminary support for the L2 caches found
on newer SH-4A CPUs.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 18:27:43 +09:00
Paul Mundt 9d549a7d8e sh: Update kexec support for API changes.
This was falling a bit behind..

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 18:26:05 +09:00
Paul Mundt 05ae915851 sh: Optimized readsl()/writesl() support.
Implement optimized copies of readsl()/writesl().

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 18:25:24 +09:00
Paul Mundt 2220d16493 sh: Report movli.l/movco.l capabilities.
Add llsc to cpu_flags[] and comment cpu-features.h.

Signed-off-by: Jamie Lenehan <nynaeve@twibble.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 18:24:28 +09:00
Paul Mundt 315bb96824 sh: CPU flags in AT_HWCAP in ELF auxvt.
Encode processor flags in AT_HWCAP in the ELF auxiliary vector.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 18:22:53 +09:00
Paul Mundt a6a3113989 sh: Add support for 4K stacks.
This enables support for 4K stacks on SH.

Currently this depends on DEBUG_KERNEL, but likely all boards
will switch to this as the default in the future.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 18:22:14 +09:00
Paul Mundt d153ea88dc sh: stack debugging support.
This adds a DEBUG_STACK_USAGE and DEBUG_STACKOVERFLOW for SH.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 18:20:16 +09:00
Paul Mundt 2c7834a6f1 sh: machvec rework.
Some more machvec overhauling and setup code cleanup. Kill off
get_system_type() and platform_setup(), we can do these both
through the machvec. While we're add it, kill off more useless
mach.c's and drop some legacy cruft from setup.c.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 18:17:31 +09:00
Paul Mundt bc8fb5d047 sh: Solution Engine SH7343 board support.
This adds support for the SE7343 board.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 18:09:34 +09:00
Paul Mundt 5a4053b232 sh: Kill off dead boards.
None of these have been maintained in years, and no one seems to
be interested in doing so, so just get rid of them.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 18:00:19 +09:00
Paul Mundt 781125ca58 sh: New atomic ops for SH-4A movli.l/movco.l
SH-4A implements LL/SC instructions, so we implement a simple
set of atomic operations using these.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 17:52:19 +09:00
Paul Mundt 91550f715b sh: Kill off the rest of the legacy rtc mess.
With the new RTC class driver, we can get rid of most of the
old left over cruft.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 17:45:01 +09:00
Takashi YOSHII 51e22e7a05 sh: SHMIN board support.
This adds support for the SHMIN SH7706 board.

Signed-off-by: Takashi YOSHII <takasi-y@ops.dti.ne.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 17:41:31 +09:00
Paul Mundt e5723e0eeb sh: Add support for SH7706/SH7710/SH7343 CPUs.
This adds support for the aforementioned CPU subtypes, and cleans
up some build issues encountered as a result.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 17:38:11 +09:00
Paul Mundt ecd9561687 serial: Add SERIAL_SH_SCI_NR_UARTS for sh-sci.
sh-sci needs to be able to define its number of ports to
support, we do this with a config option, like most other
ports do.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 17:32:30 +09:00
Paul Mundt 9f23e7e94f sh: pselect6 and ppoll, along with signal trampoline rework.
This implements support for ppoll() and pselect6()..

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 17:27:00 +09:00
Yoshinori Sato a2d1a5fae6 sh: __addr_ok() and other misc nommu fixups.
A few more outstanding nommu fixups..

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 17:25:07 +09:00
Yoshinori Sato e96636ccfa sh: Various nommu fixes.
This fixes up some of the various outstanding nommu bugs on
SH.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 17:21:02 +09:00
Paul Mundt e7f93a355c sh: Make PAGE_OFFSET configurable.
nommu needs to be able to shift PAGE_OFFSET, so we switch it to a
non-user-visible CONFIG_PAGE_OFFSET and use that in the few places
where it matters.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 17:19:13 +09:00
Paul Mundt adf1890b0c sh: Move voyagergx_reg.h to a more sensible place.
Other boards require this as well, so move it out of the
rts7751r2d directory.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 17:17:27 +09:00
Takashi YOSHII 4b565680d1 sh: math-emu support
This implements initial math-emu support, aimed primarily at SH-3.

Signed-off-by: Takashi YOSHII <takasi-y@ops.dti.ne.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 17:15:32 +09:00
Paul Mundt af514ca7d2 sh: Rename rtc_get/set_time() to avoid RTC_CLASS conflict.
We have a clash with RTC_CLASS over these names, so we
change them..

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 17:11:32 +09:00
Paul Mundt 2991be7252 sh: Fixup __strnlen_user() behaviour.
Drop TIF_USERSPACE and add addr_limit to the thread_info struct.
Subsequently, use that for address checking in strnlen_user() to
ward off bogus -EFAULTs.

Make __strnlen_user() return 0 on exception, rather than -EFAULT.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 17:07:07 +09:00
Paul Mundt 0f08f33808 sh: More cosmetic cleanups and trivial fixes.
Nothing exciting here, just trivial fixes..

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 17:03:56 +09:00
Paul Mundt 959f85f8a3 sh: Consolidated SH7751/SH7780 PCI support.
This cleans up quite a lot of the PCI mess that we
currently have, and attempts to consolidate the
duplication in the SH7780 and SH7751 PCI controllers.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 16:43:28 +09:00
Paul Mundt 56e8d7b578 sh: kgdb stub cleanups.
Some kgdb cleanup. Move hexchars/highhex/lowhex to the header, so it can
be reused by sh-sci. Also drop silly ctrl_inl/outl() overloading being
done by the kgdb stub.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 16:24:55 +09:00
Andriy Skulysh 3aa770e797 sh: APM/PM support.
This adds some simple PM stubs and the basic APM interfaces,
primarily for use by hp6xx, where the existing userland
expects it.

Signed-off-by: Andriy Skulysh <askulysh@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 16:20:22 +09:00
Paul Mundt ef48e8e349 sh: Free up some and document PTEL flags.
Drop _PAGE_SHARED/_PAGE_U0_SHARED and document Linux PTE encodings in
the PTEL value. Preserve the swap cache entry encoding semantics for
now, though it will need rework to free up _PAGE_WT from _PAGE_FILE.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 16:17:17 +09:00
Paul Mundt 00b3aa3fc9 sh: xchg()/__xchg() always_inline fixes for gcc4.
Make __xchg() a macro, so that gcc 4.0 doesn't blow up thanks to
always_inline..

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 16:05:56 +09:00
Paul Mundt f151749440 sh: Cleanup and document register bank usage.
Initial register bank cleanup. Make SR.RB configurable, and add some
preliminary documentation on register bank usage within the kernel.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 16:01:12 +09:00
Paul Mundt 5283ecb5cc sh: Add support for R7780RP and R7780MP boards.
This adds support for the Renesas SH7780 development boards,
R7780RP and R7780MP.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 15:59:17 +09:00
Paul Mundt d7c30c682a sh: Store Queue API rework.
Rewrite the store queue API for a per-cpu interface in the driver
model. The old miscdevice is dropped, due to TASK_SIZE limitations,
and no one was using it anyways.

Carve up and allocate store queue space with a bitmap, back sq
mapping objects with a slab cache, and let userspace worry about
its own prefetching.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 15:49:57 +09:00
Paul Mundt 373e68b547 sh: Board updates for I/O routine rework.
This updates the various boards for some of the recent I/O routine
updates.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 15:41:24 +09:00
Paul Mundt c470662854 sh: Fixup SHMLBA definition for SH7705.
We need this set to something sensible anywhere were we have
an aliasing dcache..

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 15:29:18 +09:00
Paul Mundt d7cdc9e8ac sh: ioremap() overhaul.
ioremap() overhaul. Add support for transparent PMB mapping, get rid of
p3_ioremap(), etc. Also drop ioremap() and iounmap() routines from the
machvec, as everyone can use the generic ioremap() API instead. For PCI
memory apertures and other special cases, use the pci_iomap() API, as
boards are already required to get the mapping right there.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 15:16:42 +09:00
Paul Mundt 26ff6c11ef sh: page table alloc cleanups and page fault optimizations.
Cleanup of page table allocators, using generic folded PMD and PUD
helpers. TLB flushing operations are moved to a more sensible spot.

The page fault handler is also optimized slightly, we no longer waste
cycles on IRQ disabling for flushing of the page from the ITLB, since
we're already under CLI protection by the initial exception handler.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 15:13:36 +09:00
Paul Mundt 0c7b1df69c sh: SH-4A Privileged Space Mapping Buffer (PMB) support.
Add support for 32-bit physical addressing through the SH-4A
Privileged Space Mapping Buffer (PMB).

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 15:08:07 +09:00
Jamie Lenehan a09749dd86 sh: Titan board support.
Add support for the titan board.

Signed-off-by: Jamie Lenehan <lenehan@twibble.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 15:05:39 +09:00
Paul Mundt 298476220d sh: Add control register barriers.
Currently when making changes to control registers, we
typically need some time for changes to take effect (8
nops, generally).  However, for sh4a we simply need to
do an icbi..

This is a simple patch for implementing a general purpose
ctrl_barrier() which functions as a control register write
barrier. There's some additional documentation in the patch
itself, but it's pretty self explanatory.

There were also some places where we were not doing the
barrier, which didn't seem to have any adverse effects on
legacy parts, but certainly did on sh4a. It's safer to have
the barrier in place for legacy parts as well in these cases,
though this does make flush_tlb_all() more expensive (by an
order of 8 nops).  We can ifdef around the flush_tlb_all()
case for now if it's clear that all legacy parts won't have
a problem with this.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 14:57:44 +09:00
kogiidena 94c0fa520c sh: landisk board support.
This adds support for the I-O DATA Landisk.

Signed-off-by: kogiidena <kogiidena@eggplant.ddo.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 14:53:35 +09:00
Paul Mundt 634bf4f69b sh: Fix libata build.
Drop virt_to_bus() from sg_dma_address() so libata builds.
While we're at it, move sg_dma_address() and sg_dma_len()
from pci.h to scatterlist.h.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 14:48:09 +09:00
Paul Mundt 8b395265f8 sh: Fix fatal oops in copy_user_page() on sh4a (SH7780).
We had a pretty interesting oops happening, where copy_user_page()
was down()'ing p3map_sem[] with a bogus offset (particularly, an
offset that hadn't been initialized with sema_init(), due to the
mismatch between cpu_data->dcache.n_aliases and what was assumed
based off of the old CACHE_ALIAS value).

Luckily, spinlock debugging caught this for us, and so we drop
the old hardcoded CACHE_ALIAS for sh4 completely and rely on the
run-time probed cpu_data->dcache.alias_mask. This in turn gets
the p3map_sem[] index right, and everything works again.

While we're at it, also convert to 4-level page tables..

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 14:38:02 +09:00
Paul Mundt 75c92acdd5 sh: Wire up new syscalls.
The syscall table has lagged behind a bit, wire up the new ones..

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 14:36:44 +09:00
Alexey Dobriyan ef9a1d4c0c sh: remove cpu_online() definition from <asm/smp.h>
It's defined in <linux/cpumask.h> and log is horribly flooded by
"redefined" messages.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 14:32:57 +09:00
Paul Mundt 5b19c9081f sh: Support for SH7770/SH7780 CPU subtypes.
Merge support for SH7770 and SH7780 SH-4A subtypes.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 14:31:40 +09:00
Paul Mundt a80fd21e52 sh: earlyprintk= support and cleanups.
Allow multiple early printk consoles via earlyprintk=.

With this change earlyprintk is no longer enabled by default,
it must be specified on the kernel command line. Optionally
with ,keep to prevent unreg by tty_io.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 14:26:53 +09:00
Paul Mundt e86d6b66f5 sh: prefetch()/prefetchw() support.
SH-2/3/4 are able to prefetch, add support for it..

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 14:20:54 +09:00
Richard Curnow b638d0b921 sh: Optimized cache handling for SH-4/SH-4A caches.
This reworks some of the SH-4 cache handling code to more easily
accomodate newer-style caches (particularly for the > direct-mapped
case), as well as optimizing some of the old code.

Signed-off-by: Richard Curnow <richard.curnow@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 14:09:26 +09:00