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2006-07-03[POWERPC] Add new interrupt mapping core and change platforms to use itBenjamin Herrenschmidt
This adds the new irq remapper core and removes the old one. Because there are some fundamental conflicts with the old code, like the value of NO_IRQ which I'm now setting to 0 (as per discussions with Linus), etc..., this commit also changes the relevant platform and driver code over to use the new remapper (so as not to cause difficulties later in bisecting). This patch removes the old pre-parsing of the open firmware interrupt tree along with all the bogus assumptions it made to try to renumber interrupts according to the platform. This is all to be handled by the new code now. For the pSeries XICS interrupt controller, a single remapper host is created for the whole machine regardless of how many interrupt presentation and source controllers are found, and it's set to match any device node that isn't a 8259. That works fine on pSeries and avoids having to deal with some of the complexities of split source controllers vs. presentation controllers in the pSeries device trees. The powerpc i8259 PIC driver now always requests the legacy interrupt range. It also has the feature of being able to match any device node (including NULL) if passed no device node as an input. That will help porting over platforms with broken device-trees like Pegasos who don't have a proper interrupt tree. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-07-03[POWERPC] Copy i8259 code back to arch/ppcBenjamin Herrenschmidt
This copies the i8259 interrupt controller driver from arch/powerpc to arch/ppc. It's currently shared by both architectures, but the upcoming arch/powerpc interrupt changes will break the arch/ppc builds. The changes are too important to just use #ifdef's in the driver. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-07-03[POWERPC] New device-tree interrupt parsing codeBenjamin Herrenschmidt
Adds new routines to prom_parse to walk the device-tree for interrupt information. This includes both direct mapping of interrupts and low level parsing functions for use with partial trees. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-07-03[POWERPC] Use the genirq frameworkBenjamin Herrenschmidt
This adapts the generic powerpc interrupt handling code, and all of the platforms except for the embedded 6xx machines, to use the new genirq framework. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-07-03[POWERPC] Fix error handling in detecting legacy serial portsBenjamin Herrenschmidt
Previously we weren't checking for failures in translating device addresses from the firmware. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-07-03[POWERPC] Fix booting on Momentum "Apache" board (a Maple derivative)Benjamin Herrenschmidt
This extends the maple device-tree workarounds to work on the Apache board as well, and extends the maple platform probing code to recognize the Apache board. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-07-03[POWERPC] Fix various offb and BootX-related issuesBenjamin Herrenschmidt
This patch fixes various issues with offb (the default fbdev used on powerpc when no proper fbdev is supported). It was broken when using BootX under some circumstances and would fail to properly get the framebuffer base address in others. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-07-03[POWERPC] Add a default config for 32-bit CHRP machinesPaul Mackerras
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-07-03[POWERPC] fix implicit declaration on cell.Dave Jones
(Only fails with -Werror-implicit-function-declaration, but it should still be fixed). arch/powerpc/platforms/cell/setup.c:145: error: implicit declaration of function 'udbg_init_rtas_console' Signed-off-by: Dave Jones <davej@redhat.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-07-03[POWERPC] change get_property to return void *Jeremy Kerr
Change the get_property() function to return a void *. This allows us to later remove the cast done in the majority of callers. Built for pseries, iseries, pmac32, cell, cbesim, g5, systemsim, maple, and mpc* defconfigs Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-07-02[PATCH] irq-flags: POWERPC: Use the new IRQF_ constantsThomas Gleixner
Use the new IRQF_ constants and remove the SA_INTERRUPT define Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: "David S. Miller" <davem@davemloft.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-30Remove obsolete #include <linux/config.h>Jörn Engel
Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-06-30typo fixes: occuring -> occurringAdrian Bunk
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-06-30typo fixes: mecanism -> mechanismAdrian Bunk
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-06-29[PATCH] KConfig: Spellchecking 'similarity' and 'independent'Matt LaPlante
Several KConfig files had 'similarity' and 'independent' spelled incorrectly... Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-29Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpcLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (43 commits) [POWERPC] Use little-endian bit from firmware ibm,pa-features property [POWERPC] Make sure smp_processor_id works very early in boot [POWERPC] U4 DART improvements [POWERPC] todc: add support for Time-Of-Day-Clock [POWERPC] Make lparcfg.c work when both iseries and pseries are selected [POWERPC] Fix idr locking in init_new_context [POWERPC] mpc7448hpc2 (taiga) board config file [POWERPC] Add tsi108 pci and platform device data register function [POWERPC] Add general support for mpc7448hpc2 (Taiga) platform [POWERPC] Correct the MAX_CONTEXT definition powerpc: minor cleanups for mpc86xx [POWERPC] Make sure we select CONFIG_NEW_LEDS if ADB_PMU_LED is set [POWERPC] Simplify the code defining the 64-bit CPU features [POWERPC] powerpc: kconfig warning fix [POWERPC] Consolidate some of kernel/misc*.S [POWERPC] Remove unused function call_with_mmu_off [POWERPC] update asm-powerpc/time.h [POWERPC] Clean up it_lp_queue.h [POWERPC] Skip the "copy down" of the kernel if it is already at zero. [POWERPC] Add the use of the firmware soft-reset-nmi to kdump. ...
2006-06-29Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6Linus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6: [PATCH] i386: export memory more than 4G through /proc/iomem [PATCH] 64bit Resource: finally enable 64bit resource sizes [PATCH] 64bit Resource: convert a few remaining drivers to use resource_size_t where needed [PATCH] 64bit resource: change pnp core to use resource_size_t [PATCH] 64bit resource: change pci core and arch code to use resource_size_t [PATCH] 64bit resource: change resource core to use resource_size_t [PATCH] 64bit resource: introduce resource_size_t for the start and end of struct resource [PATCH] 64bit resource: fix up printks for resources in misc drivers [PATCH] 64bit resource: fix up printks for resources in arch and core code [PATCH] 64bit resource: fix up printks for resources in pcmcia drivers [PATCH] 64bit resource: fix up printks for resources in video drivers [PATCH] 64bit resource: fix up printks for resources in ide drivers [PATCH] 64bit resource: fix up printks for resources in mtd drivers [PATCH] 64bit resource: fix up printks for resources in pci core and hotplug drivers [PATCH] 64bit resource: fix up printks for resources in networks drivers [PATCH] 64bit resource: fix up printks for resources in sound drivers [PATCH] 64bit resource: C99 changes for struct resource declarations Fixed up trivial conflict in drivers/ide/pci/cmd64x.c (the printk that was changed by the 64-bit resources had been deleted in the meantime ;)
2006-06-29[PATCH] genirq: cleanup: turn ARCH_HAS_IRQ_PER_CPU into CONFIG_IRQ_PER_CPUIngo Molnar
Cleanup: change ARCH_HAS_IRQ_PER_CPU into a Kconfig method. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-29[PATCH] genirq: cleanup: remove irq_descp()Ingo Molnar
Cleanup: remove irq_descp() - explicit use of irq_desc[] is shorter and more readable. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-29[PATCH] genirq: cleanup: merge irq_affinity[] into irq_desc[]Ingo Molnar
Consolidation: remove the irq_affinity[NR_IRQS] array and move it into the irq_desc[NR_IRQS].affinity field. [akpm@osdl.org: sparc64 build fix] Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-29[PATCH] genirq: rename desc->handler to desc->chipIngo Molnar
This patch-queue improves the generic IRQ layer to be truly generic, by adding various abstractions and features to it, without impacting existing functionality. While the queue can be best described as "fix and improve everything in the generic IRQ layer that we could think of", and thus it consists of many smaller features and lots of cleanups, the one feature that stands out most is the new 'irq chip' abstraction. The irq-chip abstraction is about describing and coding and IRQ controller driver by mapping its raw hardware capabilities [and quirks, if needed] in a straightforward way, without having to think about "IRQ flow" (level/edge/etc.) type of details. This stands in contrast with the current 'irq-type' model of genirq architectures, which 'mixes' raw hardware capabilities with 'flow' details. The patchset supports both types of irq controller designs at once, and converts i386 and x86_64 to the new irq-chip design. As a bonus side-effect of the irq-chip approach, chained interrupt controllers (master/slave PIC constructs, etc.) are now supported by design as well. The end result of this patchset intends to be simpler architecture-level code and more consolidation between architectures. We reused many bits of code and many concepts from Russell King's ARM IRQ layer, the merging of which was one of the motivations for this patchset. This patch: rename desc->handler to desc->chip. Originally i did not want to do this, because it's a big patch. But having both "desc->handler", "desc->handle_irq" and "action->handler" caused a large degree of confusion and made the code appear alot less clean than it truly is. I have also attempted a dual approach as well by introducing a desc->chip alias - but that just wasnt robust enough and broke frequently. So lets get over with this quickly. The conversion was done automatically via scripts and converts all the code in the kernel. This renaming patch is the first one amongst the patches, so that the remaining patches can stay flexible and can be merged and split up without having some big monolithic patch act as a merge barrier. [akpm@osdl.org: build fix] [akpm@osdl.org: another build fix] Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-29[PATCH] solve config broken: undefined reference to `online_page'Yasunori Goto
Memory hotplug code of i386 adds memory to only highmem. So, if CONFIG_HIGHMEM is not set, CONFIG_MEMORY_HOTPLUG shouldn't be set. Otherwise, it causes compile error. In addition, many architecture can't use memory hotplug feature yet. So, I introduce CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG. Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-29[POWERPC] Use little-endian bit from firmware ibm,pa-features propertyPaul Mackerras
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-29[POWERPC] Make sure smp_processor_id works very early in bootMichael Ellerman
There's a small period early in boot where we don't know which cpu we're running on. That's ok, except that it means we have no paca, or more correctly that our paca pointer points somewhere random. So that we can safely call things like smp_processor_id(), we need a paca, so just assume we're on cpu 0. No code should _write_ to the paca before we've set the correct one up. We setup the proper paca after we've scanned the flat device tree in early_setup(), so there's no need to do it again in start_here_common. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-29[POWERPC] U4 DART improvementsOlof Johansson
Better late than never... Respin based on previous comment. Only remaining issue last time was an extra mb() that I've taken out. Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-29[POWERPC] todc: add support for Time-Of-Day-ClockMark A. Greer
This is a resubmit with a proper subject and with all comments addressed. Applies cleanly to powerpc.git 649e85797259162f7fdc696420e7492f20226f2d Mark -- The todc code from arch/ppc supports many todc/rtc chips and is needed in arch/powerpc. This patch adds the todc code to arch/powerpc. Signed-off-by: Mark A. Greer <mgreer@mvista.com> -- arch/powerpc/Kconfig | 7 arch/powerpc/sysdev/Makefile | 1 arch/powerpc/sysdev/todc.c | 392 ++++++++++++++++++++++++++++++++++ include/asm-powerpc/todc.h | 487 +++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 887 insertions(+) -- Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-29[POWERPC] Make lparcfg.c work when both iseries and pseries are selectedStephen Rothwell
This also consolidates the initial bits of lparcfg_data() and adds the partition number to the iSeries flattened device tree. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-29[POWERPC] Fix idr locking in init_new_contextSonny Rao
We always need to serialize accesses to mmu_context_idr. I hit this bug when testing with a small number of mmu contexts. Signed-off-by: Sonny Rao <sonny@burdell.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-29[POWERPC] mpc7448hpc2 (taiga) board config fileZang Roy-r61911
Add default config for mpc7448 hpc2 (taiga) board. Signed-off-by: Roy Zang <tie-fei.zang@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-29[POWERPC] Add tsi108 pci and platform device data register functionZang Roy-r61911
Add Tundra Semiconductor tsi108 pci and platform device data register function support. Signed-off-by: Alexandre Bounine <alexandreb@tundra.com> Signed-off-by: Roy Zang <tie-fei.zang@freescale.com> --- Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-29[POWERPC] Add general support for mpc7448hpc2 (Taiga) platformZang Roy-r61911
Add support for Freescale mpc7448 (Taiga) board support Signed-off-by: Roy Zang <tie-fei.zang@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-28[PATCH] powermac backlight fixesMichael Hanselmann
Fix a erroneous calculation of the legacy brightness values as reported by Paul Collins. Additionally, it moves the calculation of the negative value in the radeonfb driver after the value check. Signed-off-by: Michael Hanselmann <linux-kernel@hansmi.ch> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Paul Collins <paul@briny.ondioline.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-28Merge branch 'for_paulus' of ↵Paul Mackerras
master.kernel.org:/pub/scm/linux/kernel/git/galak/powerpc
2006-06-28powerpc: minor cleanups for mpc86xxKumar Gala
* Remove duplicated cputable entry for 8641 (matches w/7448) * Removed __init from function prototypes in mpc86xx.h * Moved pci fixups into board specific code * Moved mpc86xx_exclude_device to generic mpc86xx pci code * Fixed sparse warnings in mpc86xx_smp.c * Removed board specific header include from asm-powerpc/mpc86xx.h Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2006-06-28[POWERPC] powerpc: kconfig warning fixAndrew Morton
arch/powerpc/Kconfig:420:warning: leading whitespace ignored Stop doing that. Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-28[POWERPC] Consolidate some of kernel/misc*.SStephen Rothwell
There were some common functions (mainly i/o). Also some small white space cleanups and remove a couple of small unused functions. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-28[POWERPC] Remove unused function call_with_mmu_offStephen Rothwell
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-28[POWERPC] Clean up it_lp_queue.hStephen Rothwell
No more StudlyCaps. Remove from a couple of places it is no longer needed. Use C style comments. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-28[POWERPC] Skip the "copy down" of the kernel if it is already at zero.Jimi Xenidis
This patch allows the kernel to recognized that it was loaded at zero and the copy down of the image is unnecessary. This is useful for Simulators and kexec models. On a typical 3.8 MiB vmlinux.strip this saves about 2.3 million instructions. Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-28[POWERPC] Add the use of the firmware soft-reset-nmi to kdump.David Wilder
With this patch, kdump uses the firmware soft-reset NMI for two purposes: 1) Initiate the kdump (take a crash dump) by issuing a soft-reset. 2) Break a CPU out of a deadlock condition that is detected during kdump processing. When a soft-reset is initiated each CPU will enter system_reset_exception() and set its corresponding bit in the global bit-array cpus_in_sr then call die(). When die() finds the CPU's bit set in cpu_in_sr crash_kexec() is called to initiate a crash dump. The first CPU to enter crash_kexec() is called the "crashing CPU". All other CPUs are "secondary CPUs". The secondary CPU's pass through to crash_kexec_secondary() and sleep. The crashing CPU waits for all CPUs to enter via soft-reset then boots the kdump kernel (see crash_soft_reset_check()) When the system crashes due to a panic or exception, crash_kexec() is called by panic() or die(). The crashing CPU sends an IPI to all other CPUs to notify them of the pending shutdown. If a CPU is in a deadlock or hung state with interrupts disabled, the IPI will not be delivered. The result being, that the kdump kernel is not booted. This problem is solved with the use of a firmware generated soft-reset. After the crashing_cpu has issued the IPI, it waits for 10 sec for all CPUs to enter crash_ipi_callback(). A CPU signifies its entry to crash_ipi_callback() by setting its corresponding bit in the cpus_in_crash bit array. After 10 sec, if one or more CPUs have not set their bit in cpus_in_crash we assume that the CPU(s) is deadlocked. The operator is then prompted to generate a soft-reset to break the deadlock. Each CPU enters the soft reset handler as described above. Two conditions must be handled at this point: 1) The system crashed because the operator generated a soft-reset. See 2) The system had crashed before the soft-reset was generated ( in the case of a Panic or oops). The first CPU to enter crash_kexec() uses the state of the kexec_lock to determine this state. If kexec_lock is already held then condition 2 is true and crash_kexec_secondary() is called, else; this CPU is flagged as the crashing CPU, the kexec_lock is acquired and crash_kexec() proceeds as described above. Each additional CPUs responding to the soft-reset will pass through crash_kexec() to kexec_secondary(). All secondary CPUs call crash_ipi_callback() readying them self's for the shutdown. When ready they clear their bit in cpus_in_sr. The crashing CPU waits in kexec_secondary() until all other CPUs have cleared their bits in cpus_in_sr. The kexec kernel boot is then started. Signed-off-by: Haren Myneni <haren@us.ibm.com> Signed-off-by: David Wilder <dwilder@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-28[POWERPC] spufs: fix class0 interrupt assignmentArnd Bergmann
The class zero interrupt handling for spus was confusing alignment and error interrupts, so swap them. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-28[POWERPC] spufs: fix memory hotplug dependencyGeoff Levand
spufs_base.c calls __add_pages, which depends on CONFIG_MEMORY_HOTPLUG. Moved the selection of CONFIG_MEMORY_HOTPLUG from CONFIG_SPUFS_MMAP to CONFIG_SPU_FS. Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-28[POWERPC] spufs: fix MFC command queue purgeBenjamin Herrenschmidt
In the context save/restore code, the SPU MFC command queue purge code has a bug: static inline void wait_purge_complete(struct spu_state *csa, struct spu *spu) { struct spu_priv2 __iomem *priv2 = spu->priv2; /* Save, Step 28: * Poll MFC_CNTL[Ps] until value '11' is * read * (purge complete). */ POLL_WHILE_FALSE(in_be64(&priv2->mfc_control_RW) & MFC_CNTL_PURGE_DMA_COMPLETE); } This will exit as soon as _one_ of the 2 bits that compose MFC_CNTL_PURGE_DMA_COMPLETE is set, and one of them happens to be "purge in progress"... which means that we'll happily continue restoring the MFC while it's being purged at the same time. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-28[POWERPC] spufs: map mmio space as guarded into user spaceBenjamin Herrenschmidt
This fixes a bug where we don't properly map SPE MMIO space as guarded, causing various test cases to fail, probably due to write combining and other niceties caused by the lack of the G bit. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-28[POWERPC] Enable XMON in cell_defconfigMichael Ellerman
Now that we have the udbg callbacks we can enable XMON by default. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-28[POWERPC] Enable the RTAS udbg console on IBM Cell BladeMichael Ellerman
Enable the RTAS udbg console on IBM Cell Blade, this allows xmon to work. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-28[POWERPC] Add udbg support for RTAS consoleMichael Ellerman
Add udbg hooks for the RTAS console, based on the RTAS put-term-char and get-term-char calls. Along with my previous patches, this should enable debugging as soon as early_init_dt_scan_rtas() is called. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-28[POWERPC] Setup RTAS values earlier, to enable rtas_call() earlierMichael Ellerman
Althought RTAS is instantiated when we enter the kernel, we can't actually call into it until we know its entry point address. Currently we grab that in rtas_initialize(), however that's quite late in the boot sequence. To enable rtas_call() earlier, we can grab the RTAS entry etc. values while we're scanning the flattened device tree. There's existing code to retrieve the values from /chosen, however we don't store them there anymore, so remove that code. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-28[POWERPC] Move RTAS exports next to their declarationsMichael Ellerman
Move RTAS exports next to their declarations. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-28[POWERPC] Make rtas_call() safe if RTAS hasn't been initialisedMichael Ellerman
Currently it's unsafe to call rtas_call() prior to rtas_initialize(). This is because the rtas.entry value hasn't been setup and so we don't know where to enter, but we just try anyway. We can't do anything intelligent without rtas.entry, so if it's not set, just return. Code that calls rtas_call() early needs to be aware that the call might fail. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>