- 03 Oct, 2007 40 commits
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Grant Likely authored
Allows the bootwrapper to use the uartlite device for console output. Signed-off-by:
Grant Likely <grant.likely@secretlab.ca> Signed-off-by:
Josh Boyer <jwboyer@linux.vnet.ibm.com>
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Valentine Barshak authored
Add a workaround for PowerPC 440EPx/GRx incorrect write to DDR SDRAM errata. Data can be written to wrong address in SDRAM when write pipelining enabled on plb0. We disable it in the cpu_setup for these processors at early init. Signed-off-by:
Valentine Barshak <vbarshak@ru.mvista.com> Signed-off-by:
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Valentine Barshak authored
The PowerPC 440EP(x) FPU init is currently done in head_44x under ifdefs. Since we should support more then one board in the same kernel, we move FPU initialization code from head_44x to cpu_setup_44x and add cpu_setup callbacks for 440EP(x). Signed-off-by:
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Valentine Barshak authored
This adds cpu_setup functionality for ppc44x platform. Low level cpu-spefic initialization routines should be placed in cpu_setup_44x.S and a callback should be added to cputable. The cpu_setup is invoked by identify_cpu() function at early init. Signed-off-by:
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Josh Boyer authored
Pass the appropriate -mcpu flag to the treeboot-walnut.o object to prevent some toolchains from erroring out with unknown opcodes Signed-off-by: -
Tony Breeds authored
Signed-off-by:
Tony Breeds <tony@bakeyournoodle.com> Signed-off-by:
Paul Mackerras <paulus@samba.org>
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Tony Breeds authored
This registers a clock event structure for the decrementer and turns on CONFIG_GENERIC_CLOCKEVENTS, which means that we now don't need most of timer_interrupt(), since the work is done in generic code. For secondary CPUs, their decrementer clockevent is registered when the CPU comes up (the generic code automatically removes the clockevent when the CPU goes down). Signed-off-by:
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git://git.bocc.de/dbox2Paul Mackerras authored
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Paul Mackerras authored
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Tony Breeds authored
Some older pSeries machines were panicking in pSeries_log_error because it was getting called before it was ready. This is a result of commit "[POWERPC] pseries: Fix jumbled no_logging flag." (79c0108d). This fixes it by explicitly enabling RTAS error logging when it has been initialized, and also makes the code clearer by renaming the "no_more_logging" variable to "logging_enabled". Signed-off-by:
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Linas Vepstas authored
Use alloc_maybe_bootmem() which wraps the if (mem_init_done) malloc clause. Signed-off-by:
Linas Vepstas <linas@austin.ibm.com> Signed-off-by:
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Ishizaki Kou authored
This adds support for the PCI bus on Celleb with new "I/O routines for PowerPC." External PCI on Celleb must do explicit synchronization with devices (Bus has no automatic synchronization feature). Signed-off-by:
Kou Ishizaki <Kou.Ishizaki@toshiba.co.jp> Acked-by:
Arnd Bergmann <arnd@arndb.de> Signed-off-by:
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Ishizaki Kou authored
This is an update for Serial I/O on Celleb. - Detection algorithm has been changed Signed-off-by:
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Ishizaki Kou authored
This changes the Celleb code to work with new Guest OS Interface to tweak HTAB on Beat. It detects old and new Guest OS Interfaces automatically. Signed-off-by:
Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by:
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Ishizaki Kou authored
This supports Power/Reset buttons on Beat on Celleb. On Beat, we have an event from Beat if Power button or Reset button is pressed. This patch catches the event and convert it to a signal to INIT process by calling ctrl_alt_del() function. /sbin/inittab have no entry to turn the machine power off so we have to detect if power button is pressed or not internally in our driver. This idea is taken from PS3's event handling subsystem. Signed-off-by:
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Ishizaki Kou authored
This is an update for "Beat on Celleb" - Move beat_pause(), beat_kexec_cpu_down() from setup.c to beat.c Signed-off-by: <Kou.Ishizaki@toshiba.co.jp> Acked-by:
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Joachim Fenkes authored
Signed-off-by:
Joachim Fenkes <fenkes@de.ibm.com> Signed-off-by:
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Michael Ellerman authored
Now that dcr_host_t contains the base address, we can use that in the axon_msi code, rather than storing it separately. Signed-off-by:
Michael Ellerman <michael@ellerman.id.au> Acked-by:
Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by:
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Michael Ellerman authored
Now that dcr_host_t contains the base address, we can use that in the mpic code, rather than storing it separately. Signed-off-by:
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Michael Ellerman authored
In its current form, dcr_map() doesn't remember the base address you passed it, which means you need to store it somewhere else. Rather than adding the base to another struct it seems simpler to store it in the dcr_host_t. Signed-off-by:
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Adrian Bunk authored
The trick for finding the right defconfig is neat, but you forgot to provide an i686_defconfig. ;-) More seriously, cross compiling the defconfig is often useful, e.g. for testing the compilation of patches that touch multiple architectures, and this patch therefore chooses g5_defconfig if $(CROSS_COMPILE) is non-empty. Signed-off-by:
Adrian Bunk <bunk@kernel.org> Acked-by:
Sam Ravnborg <sam@ravnborg.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Olof Johansson <olof@lixom.net> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
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Cyrill Gorcunov authored
This patch changes proc interface to be used with single_file/seq_open calls. Signed-off-by:
Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by:
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Cyrill Gorcunov authored
This changes structure item init format to C99, and removes useless structure items init. Signed-off-by:
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Cyrill Gorcunov authored
Adds checking of create_proc_entry call to prevent possible NULL pointer usage. Signed-off-by:
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Cyrill Gorcunov authored
Add adds checking for platform_get_resource() return code to prevent possible NULL pointer usage. Signed-off-by:
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Cyrill Gorcunov authored
Add #include <asm/io.h> directive to properly declare ioremap() and writel(). Signed-off-by:
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Cyrill Gorcunov authored
Remove useless spaces and adds some empty lines to make code more readable. Also marker for printk is added. Signed-off-by:
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Roland McGrath authored
This keeps an unstripped copy of the vDSO images built before they are stripped and embedded in the kernel. The unstripped copies get installed in $(MODLIB)/vdso/ by "make install". These files can be useful when they contain source-level debugging information. Signed-off-by:
Roland McGrath <roland@redhat.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by:
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Mathieu Desnoyers authored
Fixes this powerpc build error in 2.6.22-rc6-mm1 for powerpc 64 with CONFIG_SWAP=n : In file included from include2/asm/tlb.h:60, from /home/compudj/git/linux-2.6-lttng/arch/powerpc/mm/init_64. c:56: /home/compudj/git/linux-2.6-lttng/include/asm-generic/tlb.h: In function 'tlb_flush_mmu': /home/compudj/git/linux-2.6-lttng/include/asm-generic/tlb.h:76: error: implicit declaration of function 'release_pages' /home/compudj/git/linux-2.6-lttng/include/asm-generic/tlb.h: In function 'tlb_remove_page': /home/compudj/git/linux-2.6-lttng/include/asm-generic/tlb.h:105: error: implicit declaration of function 'page_cache_release' make[2]: *** [arch/powerpc/mm/init_64.o] Error 1 release_pages is declared in linux/pagemap.h, but cannot be included in linux/swap.h because of a sparc related comment: /* only sparc can not include linux/pagemap.h in this file * so leave page_cache_release and release_pages undeclared... */ #define free_page_and_swap_cache(page) \ page_cache_release(page) #define free_pages_and_swap_cache(pages, nr) \ release_pages((pages), (nr), 0); Signed-off-by:Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Kumar Gala <galak@kernel.crashing.org> Signed-off-by:
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Hugh Dickins authored
Add CONFIG_DEBUG_PREEMPT support to ppc64: it was useful for testing get_paca() preemption. Cheat a little, just use debug_smp_processor_id() in the debug version of get_paca(): it contains all the right checks and reporting, though get_paca() doesn't really use smp_processor_id(). Use local_paca for what might have been called __raw_get_paca(). Silence harmless warnings from io.h and lparcfg.c with local_paca - it is okay for iseries_lparcfg_data to be referencing shared_proc with preemption enabled: all cpus should show the same value for shared_proc. Why do other architectures need TRACE_IRQFLAGS_SUPPORT for DEBUG_PREEMPT? I don't know, ppc64 appears to get along fine without it. Signed-off-by:
Hugh Dickins <hugh@veritas.com> Signed-off-by:
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Stephen Rothwell authored
This patch introduces zalloc_maybe_bootmem and uses it so that we don't have to mark a whole (largish) routine as __init_ref_ok. Signed-off-by:
Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by:
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Mark A. Greer authored
Powerpc patches should be posted to linuxppc-dev@ozlabs.org, so modify MAINTAINERS to no longer reference linuxppc-embedded@ozlabs.org. Signed-off-by:
Mark A. Greer <mgreer@mvista.com> Signed-off-by:
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Scott Wood authored
On non-book-E, exceptions execute in real mode. If a fault happens that leads to a register dump, the kernel currently prints XXXXXXXX because it doesn't realize that PC is a physical address. This patch checks whether instruction address translation is turned on, and if not converts PC into a virtual address. Signed-off-by:
Scott Wood <scottwood@freescale.com> Acked-by:
Kumar Gala <galak@kernel.crashing.org> Acked-by:
Olof Johansson <olof@lixom.net> Signed-off-by:
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Arnd Bergmann authored
The /proc/bus/pci/* files list PCI domain numbers only for devices that claim to be on a multi-domain system. The check for this is broken on powerpc, because the buid value is truncated to 32 bits. There is at least one machine (IBM QS21) that only uses the high-order bits of the buid, so the return value of pci_proc_domain() ends up being always zero, which makes /proc/bus/pci useless. Change the logic to always return '1' for a nonzero buid value. Signed-off-by:
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Roland McGrath authored
This restores the CHECK_FULL_REGS sanity check to every place that can access the nonvolatile GPRs for ptrace. This is already done for native-bitwidth PTRACE_PEEKUSR, but was omitted for many other cases (32-bit ptrace, PTRACE_GETREGS, etc.); I think there may have been more uniform checks before that were lost in the recent cleanup of GETREGS et al. Signed-off-by:
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Scott Wood authored
This is a library that board code can use to extract information from the PlanetCore configuration keys. PlanetCore is used on various boards from Embedded Planet. Signed-off-by:
David Gibson <david@gibson.dropbear.id.au> Signed-off-by:
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Scott Wood authored
This allows callers to set addresses one at a time when that would be more convenient. Signed-off-by:
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Milton Miller authored
Call gunzip_partial to calculate the remaining length and copy the data to the user buffer. This makes it shorter and reduces duplication. Signed-off-by:
Milton Miller <miltonm@bga.com> Acked-by:
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Milton Miller authored
Record the number of header bytes skipped in the total bytes read field. This is needed for the initramfs parsing code to find the end of the zip file. Signed-off-by:
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Stephen Rothwell authored
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