summaryrefslogtreecommitdiffstats
path: root/arch/sh
Commit message (Collapse)AuthorAgeFilesLines
* sh: Add in PCI bus for DMA API debugging.Paul Mundt2009-04-141-0/+3
| | | | | | This adds in the pci_bus_type for DMA API debug. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Pre-allocate a reasonable number of DMA debug entries.Paul Mundt2009-04-141-1/+11
| | | | | | | | This prevents the DMA API debugging from running out of entries right away on boot. Defines 4096 entries by default, which while a bit on the heavy side, ought to leave enough breathing room for some time. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: sh7786: modify usb setup timeout judgment bug.Kuninori Morimoto2009-04-141-7/+7
| | | | | | | | | | | | | | | This corrects a race with the PHY RST bit not being set properly if the PLL status changes right before timeout. This resulted in it potentially failing even if the device came up in time. Special thanks to Mr. Juha Leppanen and Iwamatsu-san for reporting this out and reviewing it. Reported-by: Juha Leppanen <juha_motorsportcom@luukku.com> Reviewed-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com> Tested-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: ap325: use edge control for ov772x cameraKuninori Morimoto2009-04-131-0/+1
| | | | | Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Plug in support for ARCH=sh64 using sh SRCARCH.Paul Mundt2009-04-111-2/+15
| | | | | | | | | This adds in support for building with ARCH=sh64 using the sh SRCARCH. This tidies up the randconfig generation somewhat to make sure that we don't end up with impossible configurations, and without having to rely on things like KCONFIG_ALLCONFIG to detect the proper CPU support subset. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: urquell: Fix up address mapping in board comments.Kuninori Morimoto2009-04-101-15/+18
| | | | | Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Add support for DMA API debugging.Paul Mundt2009-04-094-16/+51
| | | | | | This wires up support for the generic DMA API debugging. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Provide cpumask_of_pcibus() to fix NUMA build.Paul Mundt2009-04-071-2/+5
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: urquell: Add board commentKuninori Morimoto2009-04-071-0/+27
| | | | | Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: wire up sys_preadv/sys_pwritev() syscalls.Paul Mundt2009-04-064-2/+10
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: sh7785lcr: fix PCI address map for 32-bit modeYoshihiro Shimoda2009-04-062-0/+7
| | | | | | | | | | | Fix the problem that cannot work PCI device on 32-bit mode because influence of the commit 68b42d1b548be1840aff7122fdebeb804daf0fa3 ("sh: sh7785lcr: Map whole PCI address space."). So this patch was implement like a 29-bit mode, map whole physical address space of DDR-SDRAM. Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6Linus Torvalds2009-04-0565-1512/+2608
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (23 commits) sh: sh7785lcr: Map whole PCI address space. sh: Fix up DSP context save/restore. sh: Fix up number of on-chip DMA channels on SH7091. sh: update defconfigs. sh: Kill off broken direct-mapped cache mode. sh: Wire up ARCH_HAS_DEFAULT_IDLE for cpuidle. sh: Add a command line option for disabling I/O trapping. sh: Select ARCH_HIBERNATION_POSSIBLE. sh: migor: Fix up CEU use flags. input: migor_ts: add wakeup support rtc: rtc-sh: use set_irq_wake() input: sh_keysc: use enable/disable_irq_wake() sh: intc: set_irq_wake() support sh: intc: install enable, disable and shutdown callbacks clocksource: sh_cmt: use remove_irq() and remove clockevent workaround sh: ap325 and Migo-R use new sh_mobile_ceu_info flags sh: Fix up -Wformat-security whining. sh: ap325rxa: Add ov772x support, again. sh: Sanitize asm/mmu.h for assembly use. sh: Tidy up sh7786 pinmux table. ...
| * sh: sh7785lcr: Map whole PCI address space.Takashi Yoshii2009-04-042-17/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | PCI still doesn't work on sh7785lcr 29bit 256M map mode. On SH7785, PCI -> SHwy address translation is not base+offset but somewhat like base|offset (See HW Manual (rej09b0261) Fig. 13.11). So, you can't export CS2,3,4,5 by 256M at CS2 (results CS0,1,2,3 exported, I guess). There are two candidates. a) 128M@CS2 + 128M@CS4 b) 512M@CS0 Attached patch is B. It maps 512M Byte at 0 independently of memory size. It results CS0 to CS6 and perhaps some more being accessible from PCI. Tested on 7785lcr 29bit 128M map 7785lcr 29bit 256M map (NOT tested on 32bit) Signed-off-by: Takashi YOSHII <yoshii.takashi@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: Fix up DSP context save/restore.Michael Trimarchi2009-04-047-137/+161
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There were a number of issues with the DSP context save/restore code, mostly left-over relics from when it was introduced on SH3-DSP with little follow-up testing, resulting in things like task_pt_dspregs() referencing incorrect state on the stack. This follows the MIPS convention of tracking the DSP state in the thread_struct and handling the state save/restore in switch_to() and finish_arch_switch() respectively. The regset interface is also updated, which allows us to finally be rid of task_pt_dspregs() and the special cased task_pt_regs(). Signed-off-by: Michael Trimarchi <michael@evidence.eu.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: Fix up number of on-chip DMA channels on SH7091.Paul Mundt2009-04-041-8/+12
| | | | | | | | | | | | | | | | | | This accidentally regressed when the multi-IRQ changes went in, switching SH7091 from 4 to 6 channels. Add SH7091 back in to the 4-channel dependency list. Reported-by: Adrian McMenamin <adrian@mcmen.demon.co.uk> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: update defconfigs.Paul Mundt2009-04-0242-1022/+2212
| | | | | | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: Kill off broken direct-mapped cache mode.Paul Mundt2009-04-022-17/+0
| | | | | | | | | | | | | | | | | | | | Forcing direct-mapped worked on certain older 2-way set associative parts, but was always error prone on 4-way parts. As these are the norm these days, there is not much point in continuing to support this mode. Most of the folks that used direct-mapped mode generally just wanted writethrough caching in the first place.. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: Wire up ARCH_HAS_DEFAULT_IDLE for cpuidle.Paul Mundt2009-04-023-1/+5
| | | | | | | | | | | | | | | | cpuidle wants ARCH_HAS_DEFAULT_IDLE defined in order to use the default idle loop. So, make it accessible and enable it for all sh machines. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: Add a command line option for disabling I/O trapping.Paul Mundt2009-04-021-0/+13
| | | | | | | | | | | | | | | | This adds a 'noiotrap' kernel command line option to permit disabling of I/O trapping. This is mostly useful for running on emulators where the physical device limitations are not an issue. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: Select ARCH_HIBERNATION_POSSIBLE.Paul Mundt2009-04-021-0/+1
| | | | | | | | | | | | | | Now that the requisite patches have gone in, this can safely be enabled across the board for all of the 32-bit SH platforms. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: migor: Fix up CEU use flags.Paul Mundt2009-04-021-3/+1
| | | | | | | | | | | | Follows the same change as per ap325rxa, which was inadvertently omitted. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * Merge branch 'master' of ↵Paul Mundt2009-04-025-5/+0
| |\ | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
| * | sh: ap325 and Migo-R use new sh_mobile_ceu_info flagsKuninori Morimoto2009-03-311-3/+1
| | | | | | | | | | | | | | | Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | sh: Fix up -Wformat-security whining.Paul Mundt2009-03-311-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Triggers -Werror on gcc-4.3: arch/sh/kernel/setup.c: In function 'early_parse_mem': arch/sh/kernel/setup.c:111: error: format not a string literal and no format arguments ... Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | sh: ap325rxa: Add ov772x support, again.Kuninori Morimoto2009-03-311-3/+50
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that the V4L bits have finally settled.. This patch adds support for a secondary ov772x camera on ap325rxa. This is supported in addition to the regular soc_camera_platform camera. Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | sh: Sanitize asm/mmu.h for assembly use.Francesco VIRLINZI2009-03-311-16/+19
| | | | | | | | | | | | | | | | | | | | | | | | This patch adds the ifndef __ASSEMBLY__ preprocessor to allow the defines in the file to be used also in assembly code. Signed-off-by: Francesco Virlinzi <francesco.virlinzi@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | sh: Tidy up sh7786 pinmux table.Kuninori Morimoto2009-03-312-280/+118
| | | | | | | | | | | | | | | | | | | | | Formatting and typo fix. Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | sh: Add MMU dependency for kexecNobuhiro Iwamatsu2009-03-311-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | Kexec is not likely to work on NON-MMU CPU because this added depend on MMU for kexec. Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | sh: urquell: enable LAN deviceKuninori Morimoto2009-03-311-0/+4
| | | | | | | | | | | | | | | Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | sh: Remove buggy definition from SH7786 pinmux_data[]Kuninori Morimoto2009-03-311-1/+0
| | | | | | | | | | | | | | | Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* | | Merge branch 'for-linus' of ↵Linus Torvalds2009-04-031-2/+2
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (28 commits) trivial: Update my email address trivial: NULL noise: drivers/mtd/tests/mtd_*test.c trivial: NULL noise: drivers/media/dvb/frontends/drx397xD_fw.h trivial: Fix misspelling of "Celsius". trivial: remove unused variable 'path' in alloc_file() trivial: fix a pdlfush -> pdflush typo in comment trivial: jbd header comment typo fix for JBD_PARANOID_IOFAIL trivial: wusb: Storage class should be before const qualifier trivial: drivers/char/bsr.c: Storage class should be before const qualifier trivial: h8300: Storage class should be before const qualifier trivial: fix where cgroup documentation is not correctly referred to trivial: Give the right path in Documentation example trivial: MTD: remove EOL from MODULE_DESCRIPTION trivial: Fix typo in bio_split()'s documentation trivial: PWM: fix of #endif comment trivial: fix typos/grammar errors in Kconfig texts trivial: Fix misspelling of firmware trivial: cgroups: documentation typo and spelling corrections trivial: Update contact info for Jochen Hein trivial: fix typo "resgister" -> "register" ...
| * | | trivial: fix typos/grammar errors in Kconfig textsMatt LaPlante2009-03-301-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* | | | Allow rwlocks to re-enable interruptsRobin Holt2009-04-021-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pass the original flags to rwlock arch-code, so that it can re-enable interrupts if implemented for that architecture. Initially, make __raw_read_lock_flags and __raw_write_lock_flags stubs which just do the same thing as non-flags variants. Signed-off-by: Petr Tesarik <ptesarik@suse.cz> Signed-off-by: Robin Holt <holt@sgi.com> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: <linux-arch@vger.kernel.org> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | Simplify copy_thread()Alexey Dobriyan2009-04-022-2/+2
| |_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | First argument unused since 2.3.11. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumaskLinus Torvalds2009-03-305-5/+0
|\ \ \ | |_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask: oprofile: Thou shalt not call __exit functions from __init functions cpumask: remove the now-obsoleted pcibus_to_cpumask(): generic cpumask: remove cpumask_t from core cpumask: convert rcutorture.c cpumask: use new cpumask_ functions in core code. cpumask: remove references to struct irqaction's mask field. cpumask: use mm_cpumask() wrapper: kernel/fork.c cpumask: use set_cpu_active in init/main.c cpumask: remove node_to_first_cpu cpumask: fix seq_bitmap_*() functions. cpumask: remove dangerous CPU_MASK_ALL_PTR, &CPU_MASK_ALL
| * | cpumask: remove references to struct irqaction's mask field.Rusty Russell2009-03-304-4/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup It's unused, since about 1995. So remove all initialization of it in preparation for actually removing the field. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Thomas Gleixner <tglx@linutronix.de>
| * | cpumask: remove node_to_first_cpuRusty Russell2009-03-301-1/+0
| |/ | | | | | | | | | | | | | | Everyone defines it, and only one person uses it (arch/mips/sgi-ip27/ip27-nmi.c). So just open code it there. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: linux-mips@linux-mips.org
* | V4L/DVB (10665): soc-camera: add data signal polarity flags to driversGuennadi Liakhovetski2009-03-302-3/+5
|/ | | | | | | | | All soc-camera camera and host drivers must specify supported data signal polarity, after all drivers are fixed, we'll add a suitable test to soc_camera_bus_param_compatible(). Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* i2c-algo-pca: Rework waiting for a free busWolfram Sang2009-03-281-1/+1
| | | | | | | | Waiting for a free bus now accepts the timeout value in jiffies and does proper checking using time_before. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Jean Delvare <khali@linux-fr.org>
* Merge branch 'irq-for-linus' of ↵Linus Torvalds2009-03-261-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'irq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (32 commits) x86: disable __do_IRQ support sparseirq, powerpc/cell: fix unused variable warning in interrupt.c genirq: deprecate obsolete typedefs and defines genirq: deprecate __do_IRQ genirq: add doc to struct irqaction genirq: use kzalloc instead of explicit zero initialization genirq: make irqreturn_t an enum genirq: remove redundant if condition genirq: remove unused hw_irq_controller typedef irq: export remove_irq() and setup_irq() symbols irq: match remove_irq() args with setup_irq() irq: add remove_irq() for freeing of setup_irq() irqs genirq: assert that irq handlers are indeed running in hardirq context irq: name 'p' variables a bit better irq: further clean up the free_irq() code flow irq: refactor and clean up the free_irq() code flow irq: clean up manage.c irq: use GFP_KERNEL for action allocation in request_irq() kernel/irq: fix sparse warning: make symbol static irq: optimize init_kstat_irqs/init_copy_kstat_irqs ...
| * Merge branches 'irq/genirq' and 'linus' into irq/coreIngo Molnar2009-03-162-52/+6
| |\
| | \
| | \
| *-. \ Merge branches 'irq/genirq', 'irq/sparseirq' and 'irq/urgent' into irq/coreIngo Molnar2009-02-131-1/+1
| |\ \ \
| | | * | sparseirq: use kstat_irqs_cpu insteadYinghai Lu2009-01-111-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: build fix Ingo Molnar wrote: > tip/arch/blackfin/kernel/irqchip.c: In function 'show_interrupts': > tip/arch/blackfin/kernel/irqchip.c:85: error: 'struct kernel_stat' has no member named 'irqs' > make[2]: *** [arch/blackfin/kernel/irqchip.o] Error 1 > make[2]: *** Waiting for unfinished jobs.... > So could move kstat_irqs array to irq_desc struct. (s390, m68k, sparc) are not touched yet, because they don't support genirq Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | | | Merge branch 'master' of /home/davem/src/GIT/linux-2.6/David S. Miller2009-03-26111-1743/+10177
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: drivers/net/wimax/i2400m/usb-notif.c
| * | | | | sh: add support for SMSC Polaris platformSteve Glendinning2009-03-215-0/+1127
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Polaris is an SMSC reference platform with a SH7709S CPU and LAN9118 ethernet controller. This patch adds support for it. Updated following feedback from Nobuhiro Iwamatsu. Signed-off-by: Steve Glendinning <steve.glendinning@smsc.com> Reviewed-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | | | sh: fix the HD64461 level-triggered interrupts handlingRafael Ignacio Zurita2009-03-203-15/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Rework the hd64461 demuxer code to fix the HD64461 level-triggered interrupts handling, using handle_level_irq() as needed. Signed-off-by: Rafael Ignacio Zurita <rizurita@yahoo.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | | | sh: disallow kexec virtual entryMagnus Damm2009-03-201-1/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Older versions of kexec-tools has a zImage loader that passes a virtual address as entry point. The elf loader otoh it passes a physical address as entry point, and pages are always passed as physical addresses as well. Only allow physical addresses from now on. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | | | sh: kexec jump: fix for ftrace.Paul Mundt2009-03-181-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Save and restore ftrace state when returning from kexec jump in machine_kexec(). Follows the x86 change. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | | | sh: kexec: Drop SR.BL bit toggling.Paul Mundt2009-03-181-4/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For the time being, this creates far more problems than it solves, evident by the second local_irq_disable(). Kill all of this off and rely on IRQ disabling to protect against the VBR reload. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | | | sh: add kexec jump supportMagnus Damm2009-03-183-32/+202
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add kexec jump support to the SuperH architecture. Similar to the x86 implementation, with the following exceptions: - Instead of separating the assembly code flow into two parts for regular kexec and kexec jump we use a single code path. In the assembly snippet regular kexec is just kexec jump that never comes back. - Instead of using a swap page when moving data between pages the page copy assembly routine has been modified to exchange the data between the pages using registers. - We walk the page list twice in machine_kexec() to do and undo physical to virtual address conversion. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
OpenPOWER on IntegriCloud