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2007-09-14[POWERPC] Document and implement an improved flash device binding for powerpcDavid Gibson
This replaces the binding for flash chips in booting-without-of.txt with an clarified and improved version. It also makes drivers/mtd/maps/physmap_of.c recognize this new binding. Finally it revises the Ebony device tree source to use the new binding as an example. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Acked-by: Segher Boessenkool <segher@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-14[POWERPC] setup_64.c and prom.c comment cleanupLinas Vepstas
Grammatical corrections to comments. Signed-off-by: Linas Vepstas <linas@austin.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-14[POWERPC] prom.c whitespace cleanupLinas Vepstas
Whitespace cleanup: badly indented lines. Signed-off-by: Linas Vepstas <linas@austin.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-14[POWERPC] prom_init whitespace cleanup, typo fixLinas Vepstas
Whitespace cleanup: badly indented lines. Typo in comment. Signed-off-by: Linas Vepstas <linas@austin.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-14[POWERPC] Check _PAGE_RW and _PAGE_PRESENT on kernel addressesScott Wood
Previously, the TLB miss handlers assumed that pages above KERNELBASE are always present and read/write. This assumption is false in the case of CONFIG_DEBUG_PAGEALLOC. Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-14[POWERPC] bootwrapper: Only print MAC addresses when the node is actually ↵Scott Wood
present Some firmwares (such as PlanetCore) only provide a base MAC address, and expect the kernel to set certain bits to generate the addresses for the other ports. As such, MAC addresses are generated that may not correspond to actual hardware. Signed-off-by: Scott Wood <scottwood@freescale.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-14[POWERPC] bootwrapper: Add get_path()Scott Wood
This will be used by the PlanetCore firmware support to construct a linux,stdout-path from the serial node that it finds. Signed-off-by: Scott Wood <scottwood@freescale.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-14[POWERPC] bootwrapper: Add strtoull()Scott Wood
This will be needed by PlanetCore firmware support. Signed-off-by: Scott Wood <scottwood@freescale.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-14[POWERPC] bootwrapper: flatdevtree fixesScott Wood
1. ft_create_node was returning the internal pointer rather than a phandle. 2. ft_find_device_rel was treating a "top" phandle of NULL as an error, rather than as the root of the tree. The old, absolute ft_find_device is removed, and the relative version is renamed to ft_find_device(). Signed-off-by: Scott Wood <scottwood@freescale.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-14[POWERPC] Remove warning in arch/powerpc/kernel/sysfs.cOlof Johansson
Fixes: arch/powerpc/kernel/sysfs.c: In function 'cpu_add_sysdev_attr_group': arch/powerpc/kernel/sysfs.c:388: warning: ignoring return value of 'sysfs_create_group', declared with attribute warn_unused_result Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-14[POWERPC] Move lowlevel runlatch calls under cpu feature controlOlof Johansson
There's no need to call the runlatch on functions on processors that don't implement them (CPU_FTR_CTRL). Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-14[POWERPC] Remove unused platform_machine_check()Olof Johansson
Remove leftover cruft from ARCH=ppc. There are no users of platform_machine_check() in ARCH=powerpc, and none should be added (they should use ppc_md.machine_check_handler instead). Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-14[POWERPC] pasemi: Move pasemi_idle_init() to late_initcall()Olof Johansson
Move pasemi_idle_init() to be a late_initcall instead of being called from setup_arch(). This way the cpufreq driver has a chance to initialize and save away the boot time astate before we go to idle for the first time. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-14[POWERPC] pasemi: Print more information at machine checkOlof Johansson
Add printout of some SoC error status registers, and dump the SLB contents for those machine check events where it makes sense. Since we can't go about and ioremap registers at machine check time, and we generally want to do as little as possible to print out the information, pre-build a table of the registers to dump and their address in the common PCI config space range. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-14[POWERPC] pasemi: Export more SPRs to sysfs when CONFIG_DEBUG_KERNEL=yOlof Johansson
Export some of the implementation-specific registers via sysfs. Useful when debugging, etc. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-14[POWERPC] pasemi: Add workaround for erratum 5945Olof Johansson
Erratum 5945 causes some of the registers on the PCIe root ports to not read correctly. Do a small dance to avoid this: Write an unused register, read the value and write it back. Thankfully this is not in a hot code path. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-14[POWERPC] pasemi: Add pasemi_pci_getcfgaddr()Olof Johansson
Add pasemi_pci_getcfgaddr(), to get the remapped address of a specific config register for a PCI device. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-14[POWERPC] Export new __io{re,un}map_at() symbolsOlof Johansson
Export new __io{re,un}map_at() symbols so modules can use them. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-14[POWERPC] Export virq mapping via debugfsMichael Ellerman
This adds a debugfs file "powerpc/virq_mapping", which shows the virtual to real mapping of irq numbers. Enable it with CONFIG_VIRQ_DEBUG. Signed-off-by: Zhang Wei <wei.zhang@freescale.com> Signed-off-by: Chen Gong <G.Chen@freescale.com> Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-14[POWERPC] Initialise hwirq for legacy irqsMichael Ellerman
Although no one uses the hwirq value for legacy irqs at the moment, we should really setup the correct value in the irq_map. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-14[POWERPC] Provide a default irq_host match, which matches on an exact of_nodeMichael Ellerman
The most common match semantic is an exact match based on the device node. So provide a default implementation that does this, and hook it up if no match routine is specified. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-14[POWERPC] Invert null match behaviour for irq_hostsMichael Ellerman
Currently if you don't specify a match callback for your irq_host it's assumed you match everything. This is a kind of opt-out approach, and turns out to be the exception rather than the rule. So change the semantics to be opt-in, ie. you don't match anything unless you provide a match callback. This in itself isn't very useful, but will allow us to provide a default match implementation in a subsequent patch. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-14[POWERPC] Add an optional device_node pointer to the irq_hostMichael Ellerman
The majority of irq_host implementations (3 out of 4) are associated with a device_node, and need to stash it somewhere. Rather than having it somewhere different for each host, add an optional device_node pointer to the irq_host structure. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-14[POWERPC] Move bootwrapper's strchr() and strncmp() from .h to string.SDavid Gibson
Currently the bootwrapper has implementations of strchr() and strncmp(), but they're inlines in flatdevtree_env.h, rather than in string.S with all the rest of the string functions. This moves them to string.S. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-14[POWERPC] IOMMU virtual merge is no longer experimentalLinas Vepstas
Per conversations with BenH, IOMMU virtual merging should no longer be considered to be an "experimental" feature. In particular, CONFIG_VMERGE has been set to "y" in the defconfigs for quite a while. Signed-off-by: Linas Vepstas <linas@austin.ibm.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> ---- arch/powerpc/Kconfig | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-14Merge branch 'linux-2.6' into for-2.6.24Paul Mackerras
2007-09-12Merge branch 'merge' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: [POWERPC] Move serial_dev_init to device_initcall() [POWERPC] Enable GENERIC_ISA_DMA if FSL_ULI1575 to fix compile issue [POWERPC] cpm2: Fix off-by-one error in setbrg(). [PPC] 8xx: Fix r3 trashing due to 8MB TLB page instantiation [POWERPC] 8{5,6}xx: Fix build issue with !CONFIG_PCI
2007-09-13[POWERPC] Move serial_dev_init to device_initcall()Olof Johansson
With the I/O space rewrite by BenH, the legacy_serial serial_dev_init() initcall is now called before I/O space is setup, but it's dependent on it being available. Since there's no way to make dependencies between initcalls, we'll just have to move it to device_initcall(). Yes, it's suboptimal but I'm not aware of any better solution at this time, and it fixes a regression from 2.6.22. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-12[POWERPC] Enable GENERIC_ISA_DMA if FSL_ULI1575 to fix compile issueKumar Gala
Since the ULI1575 has a ISA bus we need to enable the generic ISA dma support for drivers that might expect it. Without this we get compile errors like the following: ound/built-in.o: In function `claim_dma_lock': /home/galak/git/linux-8572/include/asm/dma.h:189: undefined reference to `dma_spin_lock' /home/galak/git/linux-8572/include/asm/dma.h:189: undefined reference to `dma_spin_lock' sound/built-in.o: In function `release_dma_lock': /home/galak/git/linux-8572/include/asm/dma.h:195: undefined reference to `dma_spin_lock' sound/built-in.o: In function `claim_dma_lock': /home/galak/git/linux-8572/include/asm/dma.h:189: undefined reference to `dma_spin_lock' /home/galak/git/linux-8572/include/asm/dma.h:189: undefined reference to `dma_spin_lock' sound/built-in.o:/home/galak/git/linux-8572/include/asm/dma.h:195: more undefined references to `dma_spin_lock' follow make: *** [.tmp_vmlinux1] Error 1 Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-09-10[POWERPC] cpm2: Fix off-by-one error in setbrg().Scott Wood
The hardware adds one to the BRG value to get the divider, so it must be subtracted by software. Without this patch, characters will occasionally be corrupted. Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-09-10[POWERPC] 8{5,6}xx: Fix build issue with !CONFIG_PCIKumar Gala
We needed some ifdef CONFIG_PCI protection for pcibios_fixup so we can build !CONFIG_PCI. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-09-11[POWERPC] ibmebus: Prevent bus_id collisionsJoachim Fenkes
Previously, ibmebus derived a device's bus_id from its location code. The location code is not guaranteed to be unique, so we might get bus_id collisions if two devices share the same location code. The OFDT full_name, however, is unique, so we use that instead (truncating it on the left if it is too long). Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-11[POWERPC] cell/PS3: Ignore storage devices that are still being probedGeert Uytterhoeven
On PS3, A storage device may show up in the repository before the hypervisor has finished probing: - If its type is not yet known, it shows up as PS3_DEV_TYPE_STOR_DUMMY, - If its regions are being probed, it shows up as having zero regions. If any of these happen, consider the device not yet present. The storage probe thread will retry later. This fixes the timing-dependent problem where a kernel booted from FLASH ROM sometimes cannot find the hard disk. Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Acked-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-11[POWERPC] cell/PS3: Always set master run control bit in mfc_sr1_setJeremy Kerr
At present, running any SPE program on the ps3 will trigger a BUG_ON when spufs_run_spu tries to clear the master run control bit, as lv1 does not make the master run control available to Linux. This change makes SPE apps work again by disabling changes to the master run control on PS3. Although we don't have the facility to disable a SPE with supervisor-level privileges, it's better than hitting the BUG_ON unconditionally. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Acked-by: Masato Noguchi <Masato.Noguchi@jp.sony.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-11[POWERPC] cell/PS3: Fix a bug that causes the PS3 to hang on the SPU Class 0 ↵Masato Noguchi
interrupt. The Cell BE Architecture spec states that the SPU MFC Class 0 interrupt is edge-triggered. The current spu interrupt handler assumes this behavior and does not clear the interrupt status. The PS3 hypervisor visualizes all SPU interrupts as level, and on return from the interrupt handler the hypervisor will deliver a new virtual interrupt for any unmasked interrupts which for which the status has not been cleared. This fix clears the interrupt status in the interrupt handler. Signed-off-by: Masato Noguchi <Masato.Noguchi@jp.sony.com> Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Acked-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-09-07[POWERPC] Walnut zImage wrapperJosh Boyer
Add zImage wrapper for walnut board Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com> Acked-by: David Gibson <david@gibson.dropbear.id.au>
2007-09-07[POWERPC] Walnut board supportJosh Boyer
Board support for the PPC405 Walnut evaluation board Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com> Acked-by: David Gibson <david@gibson.dropbear.id.au>
2007-09-07[POWERPC] Walnut defconfigJosh Boyer
Walnut board defconfig Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-09-07[POWERPC] Walnut DTSJosh Boyer
Device tree source file for the PPC405 Walnut evaluation board. Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com> Acked-by: David Gibson <david@gibson.dropbear.id.au>
2007-09-07[POWERPC] Fix bus probe on Bamboo boardJosh Boyer
Commit 804ace8881d21 changed the behavior of how compatible nodes are found. This highlighted a bug on the Bamboo board where it wasn't probing the bus specified in the DTS file. We fix it by being explicit about which bus to probe. Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com> Acked-by: David Gibson <david@gibson.dropbvear.id.au>
2007-09-07[POWERPC] Remove dtc build cruft from DTS filesJosh Boyer
The patch below removes the dtc incantation instructions from the in-kernel DTS files. It's not needed, and is prone to being out-of-date most of the time. Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com> Acked-by: David Gibson <david@gibson.dropbear.id.au>
2007-09-07[POWERPC] PowerPC 440EPx: Sequoia bootwrapperValentine Barshak
Bootwrapper code for AMCC PPC440EPx Sequoia. Signed-off-by: Valentine Barshak <vbarshak@ru.mvista.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-09-07[POWERPC] PowerPC 440EPx: Sequoia board supportValentine Barshak
AMCC PPC440EPx Sequoia board support. Signed-off-by: Valentine Barshak <vbarshak@ru.mvista.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-09-07[POWERPC] PowerPC 440EPx: Sequoia defconfigValentine Barshak
AMCC PPC440EPx Sequoia default config. Signed-off-by: Valentine Barshak <vbarshak@ru.mvista.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-09-07[POWERPC] PowerPC 440EPx: Sequoia device treeValentine Barshak
AMCC PPC440EPx Sequoia device tree. Signed-off-by: Valentine Barshak <vbarshak@ru.mvista.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-08-30[POWERPC] PS3: Fix bug where the major version part is not comparedMasakazu Mokuno
Fix the bug that the major version part of the firmware version number is ignored in the comparison done by ps3_compare_firmware_version because the difference of two 64-bit quantities is returned as an int. Signed-off-by: Masakazu Mokuno <mokuno@sm.sony.co.jp> Acked-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-08-30[POWERPC] Update defconfigsPaul Mackerras
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-08-30[POWERPC] spufs: Don't call spu_run_init from spu_reacquire_runnableAndre Detsch
This fixes a major bug which was happening when a SPU thread advances its execution right after being restored to a SPU. A potentially outdated NPC value was being (re)written to the SPU. So, spu_run_init, in this case, was either not doing anything relevant, or breaking the execution of the SPU thread. This fixes a common problem of losing a mailbox write when it was done to a saved context. Signed-off-by: Andre Detsch <adetsch@br.ibm.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-08-30[POWERPC] spufs: Fix update of mailbox status register during backed wbox writeArnd Bergmann
When a process writes into the inbound spu mailbox (wbox) while the context is saved, we accidentally break the contents of the mb_stat_R register by clearing other entries of the mailbox status register. This can cause the user side to hang. This change fixes the problem by only altering the appropriate bits of the mailbox status register during a backing-store write. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-08-30[POWERPC] spu_manage: fix spu_unit_number for celleb device treeChristian Krafft
This fixes a regression introduced with 2.6.23-rc4 after on some confusion about the device tree interfaces. IBM QS21 device trees provide "physical-id", so we changed the code to run on that and remain compatible with all IBM machines. However, the Toshiba Celleb device tree provides the "unit-id" property, which was in the Linux code, but never used in this way on IBM hardware. Legacy device tree used the reg property for the physical id of an spe. This patch fixes find_spu_unit_number to look for the spu id in that order. The length is checked to avoid misinterpretation in case the attributes unit-id or reg do not contain the id. Signed-off-by: Christian Krafft <krafft@de.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Cc: Jeremy Kerr <jk@ozlabs.org>
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