- 31 Oct, 2013 9 commits
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Sudeep KarkadaNagesha authored
Currently big endianness of the device tree data is assumed in of_find_next_cache_node for 'handle' when calling of_find_node_by_phandle. In preparation to move this function to common code, this patch fixes the endianness using 'be32_to_cpup' Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rob Herring <rob.herring@calxeda.com> Signed-off-by:
Sudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com> Signed-off-by:
Benjamin Herrenschmidt <benh@kernel.crashing.org>
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Michael Neuling authored
We currently turn IRQs off in __switch_to(0 but this is unnecessary as it's already disabled in the caller. This removes the IRQ disable but adds a check to make sure it is really off in case this changes in future. Signed-off-by:
Michael Neuling <mikey@neuling.org> Signed-off-by:
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Philippe Bergheaud authored
This is an optimization for the PowerPC in 64-bit little-endian. Bit counting is used in find_zero(), instead of the multiply and shift. It is modelled after Alan Modra's PowerPC LE strlen patch http://sourceware.org/ml/libc-alpha/2013-08/msg00097.html. Signed-off-by:
Philippe Bergheaud <felix@linux.vnet.ibm.com> Signed-off-by:
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Philippe Bergheaud authored
This enables the Berkeley Packet Filter JIT compiler for the PowerPC running in 64bit Little Endian. Signed-off-by:
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Dan Streetman authored
Currently, when not in hypervisor mode the kernel Oopses during suspend or hibernation when accessing the SDR1 register, because it is only available in hypervisor mode. Access to it needs to be protected in BEGIN/END_FW_FTR_SECTION. Signed-off-by:
Dan Streetman <ddstreet@ieee.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Reported-by:
Jimmy Pan <jipan@redhat.com> Tested-by:
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Christian Kujau authored
for quite some time the following is printed (twice) after doing "make oldconfig": [...] scripts/kconfig/conf --oldconfig Kconfig warning: (ADB_PMU_LED_IDE) selects LEDS_TRIGGER_IDE_DISK which has unmet direct dependencies (NEW_LEDS && IDE_GD_ATA && LEDS_TRIGGERS) warning: (ADB_PMU_LED_IDE) selects LEDS_TRIGGER_IDE_DISK which has unmet direct dependencies (NEW_LEDS && IDE_GD_ATA && LEDS_TRIGGERS) The following patch causes ADB_PMU_LED to depend on IDE_GD_ATA, so that the options above are only available when IDE_GD_ATA is actually selected and thus eliminates the warning. Signed-off-by:
Christian Kujau <lists@nerdbynature.de> Signed-off-by:
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Cedric Le Goater authored
When reading partitions, the length has to be translated from big endian to the endian order of the host. Similarly, when writing partitions, the length needs to be in big endian order. The userspace tool 'nvram' needs a similar fix as it is reading and writing partitions through /dev/nram : http://sourceforge.net/p/powerpc-utils/mailman/message/31571277/Signed-off-by:Cedric Le Goater <clg@fr.ibm.com> Signed-off-by:
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Cedric Le Goater authored
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Cedric Le Goater authored
nvram_scan_partitions() is called twice when initializing the "lnx,oops-log" partition and the "ibm,rtas-log" partition. This fills the partition list with duplicate entries. This patch moves the partition scan in the init routine pseries_nvram_init_log_partitions() which is called only once. Signed-off-by:
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- 30 Oct, 2013 24 commits
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Vasant Hegde authored
Code update interface for powernv platform. This provides sysfs interface to pass new image, validate, update and commit images. This patch includes: - Below OPAL APIs for code update - opal_validate_flash() - opal_manage_flash() - opal_update_flash() - Create below sysfs files under /sys/firmware/opal - image : Interface to pass new FW image - validate_flash : Validate candidate image - manage_flash : Commit/Reject operations - update_flash : Flash new candidate image Updating Image: "update_flash" is an interface to indicate flash new FW. It just passes image SG list to FW. Actual flashing is done during system reboot time. Note: - SG entry format: I have kept version number to keep this list similar to what PAPR is defined. Signed-off-by:Vasant Hegde <hegdevasant@linux.vnet.ibm.com> Signed-off-by:
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Vasant Hegde authored
Create /sys/firmware/opal directory. We wil use this interface to fetch opal error logs, firmware update, etc. Signed-off-by:
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Anton Blanchard authored
Add a VMX optimised xor, used primarily for RAID5. On a POWER7 blade this is a decent win: 32regs : 17932.800 MB/sec altivec : 19724.800 MB/sec The bigger gain is when the same test is run in SMT4 mode, as it would if there was a lot of work going on: 8regs : 8377.600 MB/sec altivec : 15801.600 MB/sec I tested this against an array created without the patch, and also verified it worked as expected on a little endian kernel. [ Fix !CONFIG_ALTIVEC build -- BenH ] Signed-off-by:
Anton Blanchard <anton@samba.org> Signed-off-by:
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Geert Uytterhoeven authored
Correct reference to the location of the kexec_sequence() assembly helper. There never was a kexec_stub.S in mainline. Signed-off-by:
Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by:
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Anton Blanchard authored
The condition register (CR) is a 32 bit quantity so we should use 32 bit loads and stores. Signed-off-by:
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Anton Blanchard authored
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Anton Blanchard authored
Enable a few modules required to boot on a POWER multipath box. Signed-off-by:
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Anton Blanchard authored
Run savedefconfig over the ppc64, ppc64e and pseries config Signed-off-by:
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Anton Blanchard authored
Using -mcpu=power7 allows gcc to use a number of new instructions including 64 bit byte reversed loads. Signed-off-by:
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Anton Blanchard authored
commit f13c13a0 (powerpc: Stop using non-architected shared_proc field in lppaca) fixed a potential issue with shared/dedicated partition detection. The old method of detection relied on an unarchitected field (shared_proc), and this patch switched to using something architected (a non zero yield_count). Unfortunately the assertion in the Linux header that yield_count is only non zero on shared processor partitions is not true. It turns out dedicated processor partitions can increment yield_count and as such we falsely detect dedicated partitions as shared. Fix the comment, and switch back to using the old method. Signed-off-by:
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Tom Musta authored
This patch addresses unaligned single precision floating point loads and stores in the single-step code. The old implementation improperly treated an 8 byte structure as an array of two 4 byte words, which is a classic little endian bug. Signed-off-by:
Tom Musta <tmusta@gmail.com> Signed-off-by:
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Tom Musta authored
This patch modifies the unaligned access routines of the sstep.c module so that it properly reverses the bytes of storage operands in the little endian kernel kernel. This is implemented by breaking an unaligned little endian access into a combination of single byte accesses plus an overal byte reversal operation. Signed-off-by:
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Tom Musta authored
This patch enables alignment handling for the load/store floating point pair instructions (lfdp, lfdpx, stfdp, stfdpx). The handler routine is properly coded and only needs to be enabled. Signed-off-by:
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Tom Musta authored
The alignment handler is incorrect for unaligned string instructions in little endian mode. These instructions access data as arrays of bytes and thus are endian neutral. However, the routine also handles the load/store multiple instructions, which are NOT endian neutral. This patch toggles the byte swapping flag for the string instructions in little endian builds. This effectively disables the byte swapping logic. Signed-off-by:
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Anton Blanchard authored
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Anton Blanchard authored
This issue was causing the QEMU emulated USB device to fail dring PCI probe. Signed-off-by:
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Prarit Bhargava authored
Commit e82b89a6 used strcat instead of strcpy which can result in an overflow of newlines on the buffer. Signed-off-by: Prarit Bhargava Cc: benh@kernel.crashing.org Cc: ben@decadent.org.uk Cc: stable@vger.kernel.org Signed-off-by:
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Alistair Popple authored
PPC44x supports page sizes other than 4K however when 64K page sizes are selected compilation fails. This is due to a change in the definition of pgtable_t introduced by the following patch: commit 5c1f6ee9 Author: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> powerpc: Reduce PTE table memory wastage The above patch only implements the new layout for PPC64 so it doesn't compile for PPC32 with a 64K page size. Ideally we should implement the same layout for PPC32 however for the meantime this patch reverts the definition of pgtable_t for PPC32. Signed-off-by:
Alistair Popple <alistair@popple.id.au> Signed-off-by:
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Michael Ellerman authored
If you try and build the FA_DUMP code with CONFIG_KEXEC=n, you see errors such as the following: arch/powerpc/kernel/fadump.c 408:2: error: 'crashing_cpu' undeclared (first use in this function) 410:2: error: implicit declaration of function 'crash_save_vmcoreinfo' 513:22: error: storage size of 'prstatus' isn't known 520:2: error: implicit declaration of function 'elf_core_copy_kernel_regs' 521:36: error: 'KEXEC_CORE_NOTE_NAME' undeclared (first use in this function) 624:49: error: 'note_buf_t' undeclared (first use in this function) 872:2: error: implicit declaration of function 'paddr_vmcoreinfo_note' 874:18: error: 'vmcoreinfo_max_size' undeclared (first use in this function) This is because although FA_DUMP doesn't use kexec as the actual reboot mechanism, it does use parts of the kexec code to assemble/disassemble the crash image. Signed-off-by:
Michael Ellerman <michael@ellerman.id.au> Signed-off-by:
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Vaishnavi Bhat authored
This patch fixes typo in comments virtual to physical address conversion. Signed-off-by:
Vaishnavi Bhat <vaishnavi@linux.vnet.ibm.com> Signed-off-by:
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Robert Jennings authored
Move the few declarations from arch/powerpc/kernel/setup.h into arch/powerpc/include/asm/setup.h. This resolves a sparse warning for arch/powerpc/mm/numa.c which defines do_init_bootmem() but can't include the setup.h header in the prior path. Resolves: arch/powerpc/mm/numa.c:998:13: warning: symbol 'do_init_bootmem' was not declared. Should it be static? Signed-off-by:Robert C Jennings <rcj@linux.vnet.ibm.com> Signed-off-by:
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Robert Jennings authored
Simple fixes for sparse warnings in this file. Resolves: arch/powerpc/mm/numa.c:198:24: warning: Using plain integer as NULL pointer arch/powerpc/mm/numa.c:1157:5: warning: symbol 'hot_add_node_scn_to_nid' was not declared. Should it be static? arch/powerpc/mm/numa.c:1238:28: warning: Using plain integer as NULL pointer arch/powerpc/mm/numa.c:1538:6: warning: symbol 'topology_schedule_update' was not declared. Should it be static? Signed-off-by: -
Paul Mackerras authored
Commit c55aef0e ("powerpc/boot: Change the load address for the wrapper to fit the kernel") adjusts the wrapper address unnecessarily for platforms that use arch/powerpc/boot/of.c, since the code there allocates space for the kernel wherever it can find it and doesn't necessarily load the kernel at address 0. Changing the link address is actually harmful since it can cause the zImage to overlap with Open Firmware and thus fail to boot. To fix this, we set make_space to n for all of the platforms that use of.o. Signed-off-by:
Paul Mackerras <paulus@samba.org> Signed-off-by:
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Stephen Rothwell authored
Caused by commit a4da0d50 ("powerpc: Implement arch_get_random_long/int() for powernv") from the powerpc tree interacting with commit b5b4bb3f ("of: only include prom.h on sparc") from the dt-rh tree. I added this merge fix patch (which will need to be sent to Linus when these two trees get merged, or could be applied now to the powerpc tree): [ Also add linux/smp.h to get cpu_to_chip_id -- BenH ] Signed-off-by:
Stephen Rothwell <sfr@canb.auug.org.au> Acked-by:
Rob Herring <rob.herring@calxeda.com> Signed-off-by:
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- 29 Oct, 2013 7 commits
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Benjamin Herrenschmidt authored
Highlights include corenet board file consolidation, the ability to run userspaces with lwsync on e500v1/v2, some cleanup patches that other KVM patches will build on, support for stripped-down e6500 emulation targets, and some fixes of minor longstanding issues.
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Benjamin Herrenschmidt authored
Add Paul's fix for 32-bit register corruption in the new FP code
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Scott Wood authored
Commit 9863c28a ("powerpc: Emulate sync instruction variants") introduced a build breakage with CONFIG_PPC_EMULATED_STATS enabled. Signed-off-by:
Scott Wood <scottwood@freescale.com> Cc: Kumar Gala <galak@kernel.org> Cc: James Yang <James.Yang@freescale.com> ---
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Christian Kujau authored
During "make ppc6xx_defconfig" the following happens: HOSTCC scripts/basic/fixdep GEN /usr/local/src/tmp/lnx/Makefile HOSTCC scripts/kconfig/conf.o HOSTCC scripts/kconfig/zconf.tab.o HOSTLD scripts/kconfig/conf arch/powerpc/configs/ppc6xx_defconfig:74:warning: symbol value 'm' invalid for MCU_MPC8349EMITX Setting CONFIG_MCU_MPC8349EMITX=y in ppc6xx_defconfig makes the warning go away. This too has been reported by Geert Uytterhoeven a long time ago: https://lkml.org/lkml/2011/11/13/11 - I only came across this because I needed a "clean" defconfig for this Powerbook G5. Signed-off-by:
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Wei Yongjun authored
In case of error, the function platform_device_register_simple() returns RR_PTR() and never returns NULL. The NULL test in the return value check should be replaced with IS_ERR(). Signed-off-by:
Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by:
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Zhao Qiang authored
The P1010RDB-PB is similar to P1010RDB(P1010RDB-PA). So, P1010RDB-PB use the same platform file as P1010RDB. Then Add support for P1010RDB-PB platform. Signed-off-by:
Zhao Qiang <B45475@freescale.com> Signed-off-by:
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Wolfram Sang authored
A few new i2c-drivers came into the kernel which clear the clientdata-pointer on exit or error. This is obsolete meanwhile, the core will do it. Signed-off-by:
Wolfram Sang <wsa@the-dreams.de> Signed-off-by:
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