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2007-05-07sh: Solution Engine SH7705 board and CPU updates.Nobuhiro Iwamatsu3-7/+105
This fixes up SH7705 CPU support and the SE7705 board for some of the recent changes. Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.zh@hitachi.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-05-07sh: SH7722 clock framework support.dmitry pervushin4-6/+627
This adds support for the SH7722 (MobileR) to the clock framework. Signed-off-by: dmitry pervushin <dimka@nomadgs.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-05-07sh: Kill off udivdi3 div64_32 wrapping.Paul Mundt1-1/+0
Previously we've been handling udivdi3 references and wrapping them in to div64_32() automatically. This doesn't get a lot of use, however, and as akpm noted in the recent thread on l-k: http://lkml.org/lkml/2007/2/27/241 we're better off simply ripping it out and going the do_div() route if there happen to be any places that need it. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-05-07sh: bootmem tidying for discontig/sparsemem preparation.Paul Mundt1-69/+95
This reworks some of the node 0 bootmem initialization in preparation for discontigmem and sparsemem support. ARCH_POPULATES_NODE_MAP is switched to as a result of this. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-05-07sh: MS7712SE01 board support.Nobuhiro Iwamatsu5-1/+67
Support the SH7712 (SH3-DSP) Solution Engine reference board. Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-05-07sh: Add SH7785 Highlander board support (R7785RP).Paul Mundt6-2/+275
This adds preliminary support for the SH7785-based Highlander board. Some of the Highlander support code is reordered so that most of it can be reused directly. This also plugs in missing SH7785 checks in the places that need it, as this is the first board to support the CPU. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-05-07sh: NR_IRQS consolidation.Paul Mundt1-2/+3
Each board sets the total number of IRQs that it's interested in via the machvec. Previously we cared about the off vs on-chip IRQ range, but any code relying on that is long dead. Set NR_IRQS to something sensible given the vector range, and allow boards to cap it if they really care. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-05-07sh: generic BUG() support.Paul Mundt2-71/+30
Wire up GENERIC_BUG for SH. This moves off of the special bug frame and on to the generic struct bug_entry. Roughly the same semantics are retained, and we can kill off some of the verbose BUG() reporting code. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-05-07sh: speculative execution support for SH7780.Paul Mundt1-0/+19
SH7780 has a speculative execution mode where it can speculatively perform an instruction fetch for subroutine returns, this allows it to be enabled. There are some various pitfalls associated with this mode, so it's left as depending on CONFIG_EXPERIMENTAL and not enabled by default. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-05-07sh: Rip out broken kgdb thread support.Paul Mundt1-382/+4
The kgdb thread support is woefully out of date (it predates the pidhash), and needs a complete rewrite before it's useful again. Just rip it out entirely. Updating the unified kgdb stub is a more worthwhile endeavour for anyone that happens to be interested in this, at present it's just limping along. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-05-07sh: Bring kgdb back from the dead.Paul Mundt2-145/+55
This code has suffered quite a bit of bitrot, do some basic tidying to get it to a reasonably functional state again. This gets the basic support and the console working again. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-05-02[PATCH] x86: Allow percpu variables to be page-alignedJeremy Fitzhardinge1-1/+1
Let's allow page-alignment in general for per-cpu data (wanted by Xen, and Ingo suggested KVM as well). Because larger alignments can use more room, we increase the max per-cpu memory to 64k rather than 32k: it's getting a little tight. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Andi Kleen <ak@suse.de> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2007-03-28sh: Kill bogus GCC4 symbol exports.Paul Mundt1-3/+0
__sdivsi3_i4i, __udiv_qrnnd_16, and __udivsi3_i4i don't exist outside of the ST compiler, so kill them off. This causes compile failures with other GCC4 compilers. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-03-14sh: Fix bogus regs pointer in do_IRQ().Paul Mundt3-14/+7
SH-3 and SH-4 were trampling the register, and SH-2 wasn't even setting it in the first place. This ended up with some rather broken behaviour in the sysrq show_regs(). Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-03-12sh: Fix SH-3 cache entry_mask and way_size calculation.Paul Mundt2-16/+17
The code for performing the calculation was only in the SH-4 probe path, move it out to the common path so the other parts get this right too. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-03-05sh: Revert lazy dcache writeback changes.Paul Mundt1-3/+0
These ended up causing too many problems on older parts, revert for now.. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-03-05sh: Use L1_CACHE_BYTES for .data.cacheline_aligned.Paul Mundt1-1/+2
Previously this was using a hardcoded 32, use L1_CACHE_BYTES for cacheline alignment instead. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-03-05sh: Fix kernel thread stack corruption with preempt.Hideo Saito1-3/+2
When I run a preemptive kernel-2.6.20 for SH7780, a created kthread(pdflush) can not exit by do_exit() in kernel_thread_helper. I think that the created kthread should have a room for 'struct pt_regs' space on the stack top, because __switch_to() will refer to the space as follows using 'regs = task_pt_regs(prev)' and next condition may be true. Signed-off-by: Hideo Saito <saito@densan.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-03-05sh: Fix sigmask trampling in signal delivery.Ryusuke Sakato1-1/+3
There was a missing return in do_signal() that caused the saved sigmask to be written back after having successfully delivered the signal. Signed-off-by: Ryusuke Sakato <sakato@hsdv.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-03-05sh: Clear UBC when not in use.Stuart Menefy2-13/+34
This takes care of tearing down the UBC so it's not inadvertently left configured at the next context switch time. Failure to do this results in spurious SIGTRAPs in certain debug sequences. Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-17Storage class should be before const qualifierTobias Klauser2-4/+4
The C99 specification states in section 6.11.5: The placement of a storage-class specifier other than at the beginning of the declaration specifiers in a declaration is an obsolescent feature. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2007-02-15sh: rts7751r2d board updates.Paul Mundt2-5/+9
This tidies up some of the rts7751r2d mess and gets it booting again. Update the defconfig, too. Signed-off-by: Masayuki Hosokawa <hosokawa@ace-jp.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-14sh: Revert TLB miss fast-path changes that broke PTEA parts.Paul Mundt1-181/+20
This ended up causing problems for older parts (particularly ones using PTEA). Revert this for now, it can be added back in once it's had some more testing. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-13sh: Fix syscall numbering breakage.Paul Mundt1-4/+4
We accidentally broke the inotify syscalls, fix those up again. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-13sh: Local TLB flushing variants for SMP prep.Paul Mundt1-1/+0
Rename the existing flush routines to local_ variants for use by the IPI-backed global flush routines on SMP. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-13sh: Fixup cpu_data references for the non-boot CPUs.Paul Mundt9-178/+189
There are a lot of bogus cpu_data-> references that only end up working for the boot CPU, convert these to current_cpu_data to fixup SMP. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-13sh: Use a per-cpu ASID cache.Paul Mundt2-40/+37
Previously this was implemented using a global cache, cache this per-CPU instead and bump up the number of context IDs to match NR_CPUS. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-13sh: SH-DMAC compile fixesManuel Lauss1-1/+1
This patch does the following: - remove the make_ipr_irq stuff from dma-sh.c and replace it with a simple channel<->irq mapping table. - add DMTEx_IRQ constants for sh4 cpus - fix sh7751 DMAE irq number The SH7780 uses the same IRQs for DMA as other SH4 types, so I put the constants on top of the dma.h file. Other CPU types need to #define their own DMTEx_IRQ contants in their appropriate header. Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-13sh: add SH7760 IPR IRQ dataManuel Lauss1-15/+51
Add SH7760 IPR IRQ data; makes 2.6.20-rc bootable again. Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-13sh: Fix handle_BUG() compile error.Nobuhiro Iwamatsu1-1/+1
handle_BUG() uses TRAPA_BUG_OPCODE which is only defined for CONFIG_BUG, make sure it's not built when CONFIG_BUG=n. Signed-off-by: Nobuhiro Iwamatsu <hemamu@t-base.ne.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-13sh: Lazy dcache writeback optimizations.Paul Mundt1-4/+0
This converts the lazy dcache handling to the model described in Documentation/cachetlb.txt and drops the ptep_get_and_clear() hacks used for the aliasing dcaches on SH-4 and SH7705 in 32kB mode. As a bonus, this slightly cuts down on the cache flushing frequency. With that and the PTEA handling out of the way, the update_mmu_cache() implementations can be consolidated, and we no longer have to worry about which configuration the cache is in for the SH7705 case. And finally, explicitly disable the lazy writeback on SMP (SH-4A). Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-13sh: More tidying for large base pages.Paul Mundt1-7/+3
There were a few more things that needed fixing up, namely THREAD_SIZE and the TLB miss handler where certain PTRS_PER_PGD == PTRS_PER_PTE assumptions were being made. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-13sh: shmin updates.Takashi YOSHII2-3/+37
This fixes up shmin (and SH7706/SH7708) IPR support for some of the recent API changes. Signed-off-by: Takashi YOSHII <takasi-y@ops.dti.ne.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-13sh: allow earlyprintk baud rate to be set via command lineJamie Lenehan1-2/+22
This allows the baud rate for earlyprintk for sh4 without the standard BIOS to be set via the command line. This uses the same format as i386 and x86_64, which is: earlyprintk=serial,ttySC1,38400 The second parameter (ttySC1 above) is usually the console device name or the io address of the serial port. I allow that to be specified but ignore it in order to keep the format the same as i386/x86_64. Signed-off-by: Jamie Lenehan <lenehan@twibble.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-13sh: sh7619 / sh7206 IPR initialize updateYoshinori Sato2-79/+72
IPR initialize proceduere update. Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-13sh: Update SH-2 to use the debug trap jump table.Yoshinori Sato1-6/+4
Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-13sh: Use a jump call table for debug trap handlers.Paul Mundt7-85/+113
This rips out most of the needlessly complicated sh_bios and kgdb trap handling, and forces it all through a common fast dispatch path. As more debug traps are inserted, it's important to keep them in sync for all of the parts, not just SH-3/4. As the SH-2 parts are unable to do traps in the >= 0x40 range, we restrict the debug traps to the 0x30-0x3f range on all parts, and also bump the kgdb breakpoint trap down in to this range (from 0xff to 0x3c) so it's possible to use for nommu. Optionally, this table can be padded out to catch spurious traps for SH-3/4, but we don't do that yet.. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-02-12[PATCH] Dynamic kernel command-line: shAlon Bar-Lev1-3/+3
1. Rename saved_command_line into boot_command_line. 2. Set command_line as __initdata. Signed-off-by: Alon Bar-Lev <alon.barlev@gmail.com> Acked-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] Consolidate default sched_clock()Alexey Dobriyan1-8/+0
Use attribute(weak). Signed-off-by: Alexey Dobriyan <adobriyan@openvz.org> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] disable init/initramfs.c: architecturesJean-Paul Saman1-0/+4
Update all arch/*/kernel/vmlinux.lds.S to not include space for initramfs when CONFIG_BLK_DEV_INITRAMFS is not selected. This saves another 4 kbytes on most platfoms (some reserve PAGE_SIZE for initramfs). Signed-off-by: Jean-Paul Saman <jean-paul.saman@nxp.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-09Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-apmLinus Torvalds2-539/+0
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-apm: [APM] SH: Convert to use shared APM emulation. [APM] MIPS: Convert to use shared APM emulation. [APM] ARM: Convert to use shared APM emulation. [APM] Add shared version of APM emulation
2007-02-09[PATCH] SH vdso: use install_special_mapping()Paul Mundt1-49/+9
Signed-off-by: Paul Mundt <lethal@linux-sh.org> Cc: Roland McGrath <roland@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-09[APM] SH: Convert to use shared APM emulation.Paul Mundt2-539/+0
Signed-off-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-12-12sh: Fixup SH-2 BUG() trap handling.Yoshinori Sato1-18/+14
This adds in support for the BUG() trap on SH-2. Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-12sh: Use early_param() for earlyprintk parsing.Paul Mundt2-31/+16
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-12sh: Fix .empty_zero_page alignment for PAGE_SIZE > 4096.Paul Mundt1-1/+2
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-12sh: Fixup .data.page_aligned.Paul Mundt1-1/+1
This had a bogus .data.idt reference, fix it up.. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-12sh: Hook up SH7722 scif ipr interrupts.Paul Mundt1-0/+4
Add the SCIF IRQs to the IPR table for SH7722. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-12sh: Fixup sh_bios() trap handling.Paul Mundt1-2/+13
This was inadvertently broken when the entry.S code split up, restore the missing branch and get subsequent traps working under debug again. This manifested itself as a lockup when attempting to reload the VBR base. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-12sh: SH-MobileR SH7722 CPU support.Paul Mundt14-12/+215
This adds CPU support for the SH7722. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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