- 16 1月, 2010 1 次提交
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由 Matt Fleming 提交于
Some devices need to be ioremap'd and accessed very early in the boot process. It is not possible to use the standard ioremap() function in this case because that requires kmalloc()'ing some virtual address space and kmalloc() may not be available so early in boot. This patch provides fixmap mappings that allow physical address ranges to be remapped into the kernel address space during the early boot stages. Signed-off-by: NMatt Fleming <matt@console-pimps.org>
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- 15 1月, 2010 1 次提交
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由 Paul Mundt 提交于
Presently the secondary CPU entry point is only aimed at 29bit phys mode, causing it to point to a stray virtual address in 32bit mode. Fix it up after consulting with our shiny new __in_29bit_mode(). Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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- 13 1月, 2010 4 次提交
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由 Paul Mundt 提交于
Valid sizes include 256kB, not 258kB. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
This introduces some much overdue chainsawing of the fixed PMB support. fixed PMB was introduced initially to work around the fact that dynamic PMB mode was relatively broken, though they were never intended to converge. The main areas where there are differences are whether the system is booted in 29-bit mode or 32-bit mode, and whether legacy mappings are to be preserved. Any system booting in true 32-bit mode will not care about legacy mappings, so these are roughly decoupled. Regardless of the entry point, PMB and 32BIT are directly related as far as the kernel is concerned, so we also switch back to having one select the other. With legacy mappings iterated through and applied in the initialization path it's now possible to finally merge the two implementations and permit dynamic remapping overtop of remaining entries regardless of whether boot mappings are crafted by hand or inherited from the boot loader. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Matt Fleming 提交于
The mass produced cuts use an updated PVR value, add them to the list. Signed-off-by: NMatt Fleming <matt@console-pimps.org> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
This follows the x86 xstate changes and implements a task_xstate slab cache that is dynamically sized to match one of hard FP/soft FP/FPU-less. This also tidies up and consolidates some of the SH-2A/SH-4 FPU fragmentation. Now fpu state restorers are commonly defined, with the init_fpu()/fpu_init() mess reworked to follow the x86 convention. The fpu_init() register initialization has been replaced by xstate setup followed by writing out to hardware via the standard restore path. As init_fpu() now performs a slab allocation a secondary lighterweight restorer is also introduced for the context switch. In the future the DSP state will be rolled in here, too. More work remains for math emulation and the SH-5 FPU, which presently uses its own special (UP-only) interfaces. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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- 12 1月, 2010 9 次提交
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由 Paul Mundt 提交于
Presently this has a BUG_ON() for failure cases, as powerpc does. Switch this over to a SLAB_PANIC instead. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
Presently the thread_info allocators are special cased, depending on THREAD_SHIFT < PAGE_SHIFT. This provides a sensible definition for them regardless of configuration, in preparation for extended CPU state. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
start_thread() will become a bit heavier with the xstate freeing to be added in, so move it out-of-line in preparation. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
This adds some VBR sanity checks in the sh_bios code to ensure that the BIOS VBR is in range before blindly trapping in to it. This permits boards with varying boot loader configurations to always leave support for sh-bios enabled and it will just be disabled at run-time if not found. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
This splits out the unaligned access counters and userspace bits in to their own generic interface, which will allow them to be wired up on sh64 too. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
Now that the sh-sci earlyprintk is taken care of by the sh-sci driver directly, there's no longer any reason for having a split-out early_printk framework. sh_bios is the only other thing that uses it, so we just migrate the leftovers in to there. As it's possible to have multiple early_param()'s for the same string, there's not much point in having this split out anymore anyways, particularly since the sh_bios dependencies are still special-cased within sh-sci itself. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
sh_bios_char_out() is not used by anything in-tree these days, so just get rid of it. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
This was conditionalized on CONFIG_EARLY_PRINTK, which has subsequently gone away. Now that the serial driver always supports the early console, make sure we always establish the mapping. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
This moves the VBR handling out of the main trap handling code and in to the sh-bios helper code. A couple of accessors are added in order to permit other kernel code to get at the VBR value for state save/restore paths. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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- 05 1月, 2010 3 次提交
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由 Paul Mundt 提交于
Nothing is using these now, so kill them all off. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
This is the next big chunk of hw_breakpoint support. This decouples the SH-4A support from the core and moves it out in to its own stub, following many of the conventions established with the perf events layering. In addition to extending SH-4A support to encapsulate the remainder of the UBC channels, clock framework support for handling the UBC interface clock is added as well, allowing for dynamic clock gating. This also fixes up a regression introduced by the SIGTRAP handling that broke the ksym_tracer, to the extent that the current support works well with all of the ksym_tracer/ptrace/kgdb. The kprobes singlestep code will follow in turn. With this in place, the remaining UBC variants (SH-2A and SH-4) can now be trivially plugged in. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
SH-2A was referencing the old handler that no longer exists, fix it up. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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- 28 12月, 2009 1 次提交
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由 Paul Mundt 提交于
This is the initial step for converting singlestep handling via ptrace over to hw_breakpoints. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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- 22 12月, 2009 2 次提交
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由 Paul Mundt 提交于
This kills off kgdb's breakpoint handler and ties in to the notifier chain instead. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
Presently the hw_breakpoint code is the primary notifier dispatch for breakpoint traps, although it's only UBC traps that are of particular interest there. This patches in a check to allow non-UBC generated breakpoints to pass through down the remainder of the notifier chain, giving things like kgdb a chance at getting notified. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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- 21 12月, 2009 3 次提交
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由 Paul Mundt 提交于
The event callback handling has been removed in favour of going through a generic event handler to handle overflows. Follows the x86 change. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
We don't actually require this in the cpu_relax() polling case, so just cuddle these around the sleeping version. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
This fixes up some crashes with IRQs racing the need_resched() test under QEMU. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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- 17 12月, 2009 2 次提交
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由 Nobuhiro Iwamatsu 提交于
Add dmaengine platform device to SH7785. Signed-off-by: NNobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Guennadi Liakhovetski 提交于
Add a dmaengine platform device to sh7724, fix DMA channel interrupt numbers. Signed-off-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: NNobuhiro Iwamatsu <iwamatsu@nigauri.org> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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- 15 12月, 2009 11 次提交
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由 Matt Fleming 提交于
After the recent FPU optimisation commit the signature of save_fpu() changed. "regs" wasn't used in the implementation of save_fpu() anyway. Signed-off-by: NMatt Fleming <matt@console-pimps.org> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Magnus Damm 提交于
Now when the sh-sci driver can do early serial output, get rid of the old duplicated code. This patch is V2 and removes support for "earlyprintk=serial" together with the following kconfig options: CONFIG_EARLY_SCIF_CONSOLE CONFIG_EARLY_SCIF_CONSOLE_PORT CONFIG_EARLY_PRINTK With this patch applied "earlyprintk=" support is always built-in the SuperH kernel. For this to work the serial driver must have early platform support and in the case of sh-sci the serial console needs to be enabled: CONFIG_SERIAL_SH_SCI_CONSOLE=y So after enabling the SuperH SCI console kconfig option you also need to point out port using the kernel command line: "earlyprintk=sh-sci.N[,baudrate][,keep]" Remember that clocks may be disabled by the boot loader so you may have to do some board specific static clock setup before earlyprintk will work on your platform. Signed-off-by: NMagnus Damm <damm@opensource.se> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Magnus Damm 提交于
This patch breaks out the sh5 scif serial port platform data from a shared platform device to one platform device per port. Also, move the serial port to the list of early platform devices. Signed-off-by: NMagnus Damm <damm@opensource.se> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Magnus Damm 提交于
This patch breaks out the sh4a scif serial port platform data from a shared platform device to one platform device per port. Also, add serial ports to the list of early platform devices. All sh4a except SuperH Mobile processors are modified by this patch. While at it, sh7757 gets early platform device support. Signed-off-by: NMagnus Damm <damm@opensource.se> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Magnus Damm 提交于
This patch breaks out the sh4a scif serial port platform data from a shared platform device to one platform device per port. Also, add serial ports to the list of early platform devices. Only sh4a SuperH Mobile processors are modified by this patch. Signed-off-by: NMagnus Damm <damm@opensource.se> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Magnus Damm 提交于
This patch breaks out the sh4 scif serial port platform data from a shared platform device to one platform device per port. Also, add serial ports to the list of early platform devices. While at it, get rid of the R2D ifdef in the processor code and adjust the defconfigs to use ttySC1. Signed-off-by: NMagnus Damm <damm@opensource.se> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Magnus Damm 提交于
This patch breaks out the sh3 scif serial port platform data from a shared platform device to one platform device per port. Also, add serial ports to the list of early platform devices. Signed-off-by: NMagnus Damm <damm@opensource.se> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Magnus Damm 提交于
This patch breaks out the sh2a scif serial port platform data from a shared platform device to one platform device per port. Also, add serial ports to the list of early platform devices. Signed-off-by: NMagnus Damm <damm@opensource.se> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Magnus Damm 提交于
This patch breaks out the sh2 scif serial port platform data from a shared platform device to one platform device per port. Also, add serial ports to the list of early platform devices. Signed-off-by: NMagnus Damm <damm@opensource.se> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Magnus Damm 提交于
This is V2 of early serial console support for the sh-sci driver. The early serial console is using early platform devices and "earlyprintk". To use this feature the early platform devices must be broken out to one device per port and the desired port should be selected on the kernel command line like: "earlyprintk=sh-sci.N[,baudrate][,keep]" Signed-off-by: NMagnus Damm <damm@opensource.se> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Thomas Gleixner 提交于
Convert locks which cannot be sleeping locks in preempt-rt to raw_spinlocks. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Acked-by: NPeter Zijlstra <peterz@infradead.org> Acked-by: NIngo Molnar <mingo@elte.hu>
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- 14 12月, 2009 1 次提交
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由 Paul Mundt 提交于
Presently there are a couple of paths in to the alignment handler, where only the address error path presently quiets the notificiation messages based on the configuration settings. We carry over the notification level tests to the default alignment handler itself incase so that they behave uniformly. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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- 11 12月, 2009 2 次提交
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由 Al Viro 提交于
New helper - sys_mmap_pgoff(); switch syscalls to using it. Acked-by: NDavid S. Miller <davem@davemloft.net> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Paul Mundt 提交于
The stub already existed in the _64 syscall table, but was lacking a __NR_recvmmsg definition, while it was absent entirely for _32 variants. Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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