- 17 4月, 2008 16 次提交
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由 Kumar Gala 提交于
* Determine the RPN we are running the kernel at runtime rather than using compile time constant for initial TLB * Cleanup adjust_total_lowmem() to respect memstart_addr and be a bit more clear on variables that are sizes vs addresses. Signed-off-by: NKumar Gala <galak@kernel.crashing.org> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Kumar Gala 提交于
total_lowmem represents the amount of low memory, not the physical address that low memory ends at. If the start of memory is at 0 it happens that total_lowmem can be used as both the size and the address that lowmem ends at (or more specifically one byte beyond the end). To make the code a bit more clear and deal with the case when the start of memory isn't at physical 0, we introduce lowmem_end_addr that represents one byte beyond the last physical address in the lowmem region. Signed-off-by: NKumar Gala <galak@kernel.crashing.org> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Kumar Gala 提交于
A number of users of PPC_MEMSTART (40x, ppc_mmu_32) can just always use 0 as we don't support booting these kernels at non-zero physical addresses since their exception vectors must be at 0 (or 0xfffx_xxxx). For the sub-arches that support relocatable interrupt vectors (book-e), it's reasonable to have memory start at a non-zero physical address. For those cases use the variable memstart_addr instead of the #define PPC_MEMSTART since the only uses of PPC_MEMSTART are for initialization and in the future we can set memstart_addr at runtime to have a relocatable kernel. Signed-off-by: NKumar Gala <galak@kernel.crashing.org> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Kumar Gala 提交于
There does not appear to be any reason that we shouldn't just have -Iarch/$(ARCH) on both ppc32 and ppc64 builds. Signed-off-by: NKumar Gala <galak@kernel.crashing.org> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Kumar Gala 提交于
Nothing appears to use BOOT_LOAD so remove it as a configurable option. Signed-off-by: NKumar Gala <galak@kernel.crashing.org> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Adrian Bunk 提交于
This adds the missing MODULE_LICENSE("GPL"). Signed-off-by: NAdrian Bunk <bunk@kernel.org> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 David Woodhouse 提交于
Fedora 9 works on Efika without the separate 'device-tree supplement', thanks to the kernel's own fixups. With one exception -- because 'CHRP' still appears on the 'machine:' line in /proc/cpuinfo, the installer misdetects the platform and misconfigures yaboot, putting it into a PReP boot partition instead of in the /boot filesystem where the Efika's firmware could find it. The kernel's fixups for Efika already correct one instance of 'chrp', in the 'device_type' property. This fixes it in the 'CODEGEN,description' property too, since that's what's exposed to userspace in /proc/cpuinfo. Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org> Acked-by: NGrant Likely <grant.likely@secretlab.ca> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Jochen Friedrich 提交于
This implements various helpers to support OF bindings for the i2c API. Signed-off-by: NJochen Friedrich <jochen@scram.de> Acked-by: NDavid S. Miller <davem@davemloft.net> Acked-by: NStephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Anton Vorontsov 提交于
This implements support for the GPIO LIB API. Two calls are still unimplemented though: irq_to_gpio and gpio_to_irq. Signed-off-by: NAnton Vorontsov <avorontsov@ru.mvista.com> Acked-by: NGrant Likely <grant.likely@secretlab.ca> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Anton Vorontsov 提交于
This implements various helpers to support OF bindings for the GPIO LIB API. Previously this was PowerPC specific, but it seems this code isn't arch-dependent anyhow, so let's place it into of/. SPARC will not see this addition yet, real hardware seem to not use GPIOs at all. But this might change: http://www.leox.org/docs/faq_MLleon.html "16-bit I/O port" sounds promising. :-) Signed-off-by: NAnton Vorontsov <avorontsov@ru.mvista.com> Acked-by: NGrant Likely <grant.likely@secretlab.ca> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Benjamin Herrenschmidt 提交于
The iSeries veth driver uses an on-stack struct completion that it initializes using the COMPLETION_INITIALIZER instead of COMPLETION_INITIALIZER_ONSTACK macro, causing problems with lockdep. Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Benjamin Herrenschmidt 提交于
This fixes the handling of the preempt count when switching interrupt stacks so that HW interrupt properly get the softirq mask copied over from the previous stack. It also initializes the softirq stack preempt_count to 0 instead of SOFTIRQ_OFFSET, like x86, as __do_softirq() does the increment, and we hit some lockdep checks if we have it twice. That means we do run for a little while off the softirq stack with the preempt-count set to 0, which could be deadly if we try to take a softirq at that point, however we do so with interrupts disabled, so I think we are ok. Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Benjamin Herrenschmidt 提交于
Currently, we initialize the "current" pointer in the PACA (which is used by the "current" macro in the kernel) before calling setup_system(). That means that early_setup() is called with current still "NULL" which is -not- a good idea. It happens to work so far but breaks with lockdep when early code calls printk. This changes it so that all PACAs are statically initialized with __current pointing to the init task. For non-0 CPUs, this is fixed up before use. Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Ishizaki Kou 提交于
This fixes a potential bug at drivers/char/hvc_beat.c. - hvc_put_term_char routine will decrement "rest" variable twice, and forget to advance "buf" pointer by "nlen" bytes. This bug was not hit previously because the output handler in drivers/char/hvc_console.c splits given output into 16 bytes at maximum. Reported-by: NTimur Tabi <timur@freescale.com> Signed-off-by: NKou Ishizaki <kou.ishizaki@toshiba.co.jp> Acked-by: NArnd Bergmann <arnd@arndb.de> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Ishizaki Kou 提交于
Signed-off-by: NKou Ishizaki <kou.ishizaki@toshiba.co.jp> Acked-by: NArnd Bergmann <arnd@arndb.de> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Paul Mackerras 提交于
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- 16 4月, 2008 2 次提交
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由 Jerone Young 提交于
This changes the cpu_idle loop for 44x platforms to utilize the Wait Enable feature of the CPU. This helps virtulization solutions know when the guest Linux kernel is in an idle state. A command line option called "idle" is also added to allow people to change the idle loop back to the original variation. This is done by setting "idle=spin" on the kernel command line. Signed-off-by: NJerone Young <jyoung5@us.ibm.com> Signed-off-by: NJosh Boyer <jwboyer@linux.vnet.ibm.com>
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由 Josh Boyer 提交于
Add a multi-board PowerPC 40x defconfig file Signed-off-by: NJosh Boyer <jwboyer@linux.vnet.ibm.com>
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- 15 4月, 2008 18 次提交
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由 Josh Boyer 提交于
Board specific defconfigs are useful, however with the ability to do multi-board defconfigs they aren't needed in the top level configs directory. Move the 4xx board specific defconfigs to individual directories under arch/powerpc/configs. Signed-off-by: NJosh Boyer <jwboyer@linux.vnet.ibm.com>
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由 Paul Mackerras 提交于
There is a potential bug in __lmb_alloc_base where we subtract `size' from the base address of a reserved region without checking whether the subtraction could wrap around and produce a very large unsigned value. In fact it probably isn't possible to hit the bug in practice since it would only occur in the situation where we can't satisfy the allocation request and there is a reserved region starting at 0. This fixes the potential bug by breaking out of the loop when we get to the point where the base of the reserved region is less than the size requested. This also restructures the loop to be a bit easier to follow. The same logic got copied into lmb_alloc_nid_unreserved, so this makes a similar change there. Here the bug is more likely to be hit because the outer loop (in lmb_alloc_nid) goes through the memory regions in increasing order rather than decreasing order as __lmb_alloc_base does, and we are therefore more likely to hit the case where we are testing against a reserved region with a base address of 0. Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Paul Mackerras 提交于
This makes no semantic changes. It fixes the whitespace and formatting a bit, gets rid of a local DBG macro and uses the equivalent pr_debug instead, and restructures one while loop that had a function call and assignment in the condition to be a bit more readable. Some comments about functions being called with relocation disabled were also removed as they would just be confusing to most readers now that the code is in lib/. Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 David S. Miller 提交于
A variant of lmb_alloc() that tries to allocate memory on a specified NUMA node 'nid' but falls back to normal lmb_alloc() if that fails. The caller provides a 'nid_range' function pointer which assists the allocator. It is given args 'start', 'end', and pointer to integer 'this_nid'. It places at 'this_nid' the NUMA node id that corresponds to 'start', and returns the end address within 'start' to 'end' at which memory assosciated with 'nid' ends. This callback allows a platform to use lmb_alloc_nid() in just about any context, even ones in which early_pfn_to_nid() might not be working yet. This function will be used by the NUMA setup code on sparc64, and also it can be used by powerpc, replacing it's hand crafted "careful_allocation()" function in arch/powerpc/mm/numa.c If x86 ever converts it's NUMA support over to using the LMB helpers, it can use this too as it has something entirely similar. Signed-off-by: NDavid S. Miller <davem@davemloft.net> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Stephen Rothwell 提交于
Signed-off-by: NStephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Stephen Rothwell 提交于
pmi.h does not diectly reference anything in of_device.h and of the two files that include asm/pmi.h, one includes of_device.h and the other includes of_platform.h (which includes of_device.h). Signed-off-by: NStephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Stephen Rothwell 提交于
Signed-off-by: NStephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Stephen Rothwell 提交于
Now that we have the alpaca, the reg_save_ptr is no longer needed in the paca. Eradicate all global uses of it and make it static in the iSeries lpardata.c Signed-off-by: NStephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Stephen Rothwell 提交于
The iSeries HV only needs the first two fields of the paca statically initialised, so create an alternate paca that contains only those and switch to our real paca immediately after boot. This is in order to make the 1024 cpu patches easier since they will no longer have to statically initialise the pacas for iSeries. Signed-off-by: NStephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Dale Farnsworth 提交于
The prpmc2800 platform requires a zImage formatted file with an embedded dtb file. Rename the requested boot image file to dtbImage.prpmc2800. Signed-off-by: NDale Farnsworth <dale@farnsworth.org> Acked-by: NMark A. Greer <mgreer@mvista.com> Acked-by: NGrant Likely <grant.likely@secretlab.ca> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Dale Farnsworth 提交于
Add the device tree bindings for the Marvell mv64x60 series of system controller chips in booting-without-of.text. Signed-off-by: NDale Farnsworth <dale@farnsworth.org> Acked-by: NMark A. Greer <mgreer@mvista.com> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Dale Farnsworth 提交于
The mv643xx_eth driver is being modified to support multiple instances of the ethernet silicon block on the same platform. Each block contains a single register bank containing the registers for up to three ports interleaved within that bank. This patch updates the PowerPC OF to platform_device glue code to support multiple silicon blocks, each with up to three ethernet ports. The main difference is that we now allow multiple mv64x60_shared platform_devices to be registered and we provide each port platform_device with a pointer to its associated shared platform_device. The pointer will not be used until the mv643xx_eth driver changes are committed. Signed-off-by: NDale Farnsworth <dale@farnsworth.org> Acked-by: NMark Greer <mgreer@mvista.com> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Mark A. Greer 提交于
Remove several unused (or software config only) properties. Rename marvel node to "system-controller". Also, rename the "block-index" property to "cell-index" to conform to current practice. Signed-off-by: NMark A. Greer <mgreer@mvista.com> Signed-off-by: NDale Farnsworth <dale@farnsworth.org> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Dale Farnsworth 提交于
Replace several device node absolute path lookups in the mv64x60 bootwrapper code with lookups by compatible or device_type properties. Signed-off-by: NDale Farnsworth <dale@farnsworth.org> Acked-by: NMark A. Greer <mgreer@mvista.com> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Mark A. Greer 提交于
Compatible names should refer to a specific version of the hardware, without wildcards. Change each instance of mv64x60 to mv64360, which is the oldest version we currently support. Signed-off-by: NMark A. Greer <mgreer@mvista.com> Signed-off-by: NDale Farnsworth <dale@farnsworth.org> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Dale Farnsworth 提交于
After the conversion to dts v1 format, seeing the frequencies in decimal made it obvious that some of them had been incorrectly truncated. This fixes them. Note that the PCI frequency comes from a different source and is documented as 66MHz, so it was left at 66000000. Signed-off-by: NDale Farnsworth <dale@farnsworth.org> Acked-by: NMark A. Greer <mgreer@mvista.com> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Mark A. Greer 提交于
Update the prpmc2800 DTS file to version 1 and add labels. I verified that there was no change in the resulting dtb file. Signed-off-by: NMark A. Greer <mgreer@mvista.com> Signed-off-by: NDale Farnsworth <dale@farnsworth.org> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Stephen Rothwell 提交于
The allyesconfig (among others) build was giving this: In file included from include/linux/gfp.h:4, from include/linux/slab.h:14, from include/linux/percpu.h:5, from include2/asm/time.h:18, from include2/asm/cputime.h:26, from include/linux/sched.h:67, from arch/powerpc/kernel/asm-offsets.c:17: include/linux/mmzone.h:791:2: error: #error Allocator MAX_ORDER exceeds SECTION_SIZE Kconfig options are order depenendent, so move the setting of FORCE_MAX_ZONEORDER to after the setting of PPC_64K_PAGES. Also add an explicit !PPC_64K_PAGES. Signed-off-by: NStephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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- 14 4月, 2008 2 次提交
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由 Paul Mackerras 提交于
If an SLB miss interrupt happens while the RI bit of MSR is zero, we can't just return, because RI being zero indicates that SRR0/SRR1 potentially had live values in them, and the process of taking an interrupt overwrites them. This should never happen, but if it does, we try to print a nice oops message. That doesn't work, however, because the code at unrecov_slb assumes that the MMU has been turned on, but we call it with the MMU off (and have done so since the SLB miss handler was rewritten to run without turning the MMU on) -- except on iSeries, where everything runs with the MMU on. This fixes it by adding the necessary code to turn the MMU on if necessary. Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Paul Mackerras 提交于
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- 12 4月, 2008 2 次提交
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由 Linus Torvalds 提交于
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git://git.lwn.net/linux-2.6由 Linus Torvalds 提交于
* 'docs' of git://git.lwn.net/linux-2.6: Add additional examples in Documentation/spinlocks.txt Move sched-rt-group.txt to scheduler/ Documentation: move rpc-cache.txt to filesystems/ Documentation: move nfsroot.txt to filesystems/ Spell out behavior of atomic_dec_and_lock() in kerneldoc Fix a typo in highres.txt Fixes to the seq_file document Fill out information on patch tags in SubmittingPatches Add the seq_file documentation
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