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2011-07-05ARM: move memory layout sanity checking before meminfo initializationRussell King1-0/+2
Ensure that the meminfo array is sanity checked before we pass the memory to memblock. This helps to ensure that memblock and meminfo agree on the dimensions of memory, especially when more memory is passed than the kernel can deal with. Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-05-25Merge branch 'devicetree/arm-next' of git://git.secretlab.ca/git/linux-2.6 into devel-stableRussell King1-32/+58
2011-05-23arm/dt: probe for platforms via the device treeGrant Likely1-4/+19
If a dtb is passed to the kernel then the kernel needs to iterate through compiled-in mdescs looking for one that matches and move the dtb data to a safe location before it gets accidentally overwritten by the kernel. This patch creates a new function, setup_machine_fdt() which is analogous to the setup_machine_atags() created in the previous patch. It does all the early setup needed to use a device tree machine description. v5: - Print warning with neither dtb nor atags are passed to the kernel - Fix bug in setting of __machine_arch_type to the selected machine, not just the last machine in the list. Reported-by: Tixy <tixy@yxit.co.uk> - Copy command line directly into boot_command_line instead of cmd_line v4: - Dump some output when a matching machine_desc cannot be found v3: - Added processing of reserved list. - Backed out the v2 change that copied instead of reserved the dtb. dtb is reserved again and the real problem was fixed by using alloc_bootmem_align() for early allocation of RAM for unflattening the tree. - Moved cmd_line and initrd changes to earlier patch to make series bisectable. v2: Changed to save the dtb by copying into an allocated buffer. - Since the dtb will very likely be passed in the first 16k of ram where the interrupt vectors live, memblock_reserve() is insufficient to protect the dtb data. [based on work originally written by Jeremy Kerr <jeremy.kerr@canonical.com>] Tested-by: Tony Lindgren <tony@atomide.com> Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-05-23arm/dt: consolidate atags setup into setup_machine_atagsGrant Likely1-29/+40
In preparation for adding device tree support, this patch consolidates all of the atag-specific setup into a single function. v5: - drop double printk("Machine; %s\n", ...); call. - leave copying boot_command_line in setup_arch() since it isn't atags specific. v4: - adapt to the removal of lookup_machine_type() - break out dump of machine_desc table into dump_machine_table() because the device tree probe code will use it. - Add for_each_machine_desc() macro Tested-by: Tony Lindgren <tony@atomide.com> Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-05-12ARM: 6893/1: Allow for kernel command line concatenationVictor Boivie1-4/+9
This patch allows the provided CONFIG_CMDLINE to be concatenated with the one provided by the boot loader. This is useful to merge the static values defined in CONFIG_CMDLINE with the boot loader's (possibly) more dynamic values, such as startup reasons and more. Signed-off-by: Victor Boivie <victor.boivie@sonyericsson.com> Reviewed-by: Bjorn Andersson <bjorn.andersson@sonyericsson.com> Signed-off-by: Oskar Andero <oskar.andero@sonyericsson.com> Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-05-11arm/dt: Allow CONFIG_OF on ARMGrant Likely1-1/+1
Add some basic empty infrastructure for DT support on ARM. v5: - Fix off-by-one error in size calculation of initrd - Stop mucking with cmd_line, and load command line from dt into boot_command_line instead which matches the behaviour of ATAGS booting v3: - moved cmd_line export and initrd setup to this patch to make the series bisectable. - switched to alloc_bootmem_align() for allocation when unflattening the device tree. memblock_alloc() was not the right interface. Signed-off-by: Jeremy Kerr <jeremy.kerr@canonical.com> Tested-by: Tony Lindgren <tony@atomide.com> Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-03-23Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds1-3/+4
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (35 commits) ARM: Update (and cut down) mach-types ARM: 6771/1: vexpress: add support for multiple core tiles ARM: 6797/1: hw_breakpoint: Fix newlines in WARNings ARM: 6751/1: vexpress: select applicable errata workarounds in Kconfig ARM: 6753/1: omap4: Enable ARM local timers with OMAP4430 es1.0 exception ARM: 6759/1: smp: Select local timers vs broadcast timer support runtime ARM: pgtable: add pud-level code ARM: 6673/1: LPAE: use phys_addr_t instead of unsigned long for start of membanks ARM: Use long long format when printing meminfo physical addresses ARM: integrator: add Integrator/CP sched_clock support ARM: realview/vexpress: consolidate SMP bringup code ARM: realview/vexpress: consolidate localtimer support ARM: integrator/versatile: consolidate FPGA IRQ handling code ARM: rationalize versatile family Kconfig/Makefile ARM: realview: remove old AMBA device DMA definitions ARM: versatile: remove old AMBA device DMA definitions ARM: vexpress: use new init_early for clock tree and sched_clock init ARM: realview: use new init_early for clock tree and sched_clock init ARM: versatile: use new init_early for clock tree and sched_clock init ARM: integrator: use new init_early for clock tree init ...
2011-03-23crash_dump: export is_kdump_kernel to modules, consolidate elfcorehdr_addr, setup_elfcorehdr and saved_max_pfnOlaf Hering1-24/+0
The Xen PV drivers in a crashed HVM guest can not connect to the dom0 backend drivers because both frontend and backend drivers are still in connected state. To run the connection reset function only in case of a crashdump, the is_kdump_kernel() function needs to be available for the PV driver modules. Consolidate elfcorehdr_addr, setup_elfcorehdr and saved_max_pfn into kernel/crash_dump.c Also export elfcorehdr_addr to make is_kdump_kernel() usable for modules. Leave 'elfcorehdr' as early_param(). This changes powerpc from __setup() to early_param(). It adds an address range check from x86 also on ia64 and powerpc. [akpm@linux-foundation.org: additional #includes] [akpm@linux-foundation.org: remove elfcorehdr_addr export] [akpm@linux-foundation.org: fix for Tejun's mm/nobootmem.c changes] Signed-off-by: Olaf Hering <olaf@aepfle.de> Cc: Russell King <rmk@arm.linux.org.uk> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-20Merge branches 'fixes', 'pgt-next' and 'versatile' into develRussell King1-3/+4
2011-03-16Merge branch 'p2v' into develRussell King1-34/+39
Conflicts: arch/arm/kernel/module.c arch/arm/mach-s5pv210/sleep.S
2011-03-16Merge branch 'misc' into develRussell King1-1/+38
Conflicts: arch/arm/Kconfig
2011-02-23ARM: 6748/1: ignore mdesc->boot_params if out of rangeNicolas Pitre1-2/+19
The initial MMU table created in head.S contains a 1 MB mapping at the start of memory to let the early kernel boot code access the boot params specified by mdesc->boot_params. When using CONFIG_ARM_PATCH_PHYS_VIRT it is possible for the kernel to have a different idea of where the start of memory is at run time, making the compile-time determined mdesc->boot_params pointing to a memory area which is not mapped. Any access to the boot params in that case will fault and silently hang the kernel at that point. It is therefore a better idea to simply ignore mdesc->boot_params in that case and give the kernel a chance to print some diagnostic on the console later. If the bootloader provides a valid pointer in r2 to the kernel then this is used instead of mdesc->boot_params, and an explicit mapping is already created in the initial MMU table for it. It is therefore a good idea to use that facility when using a relocated kernel. Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-02-23ARM: 6749/1: fold lookup_machine_type() into setup_machine()Nicolas Pitre1-31/+17
Since commit 6fc31d54 there is no callers for lookup_machine_type() other than setup_machine(). And if the former fails it won't return, therefore the error path in the later is dead code. Let's clean things up by merging them together. Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-02-21ARM: 6673/1: LPAE: use phys_addr_t instead of unsigned long for start of membanksWill Deacon1-2/+3
The unsigned long datatype is not sufficient for mapping physical addresses >= 4GB. This patch ensures that the phys_addr_t datatype is used to represent the start address of a membank, which may reside above the 4GB boundary. Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-02-19ARM: 6676/1: Correct the cpu_architecture() function for ARMv7Catalin Marinas1-2/+2
If ID_MMFR0[3:0] >= 3, the architecture version is ARMv7. The code was currently only testing for ID_MMFR0[3:0] == 3. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-02-17ARM: P2V: avoid initializers and assembly using PHYS_OFFSETRussell King1-1/+3
As PHYS_OFFSET will be becoming a variable, we can't have it used in initializers nor assembly code. Replace those in generic code with a run-time initialization. Replace those in platform code using the individual platform specific PLAT_PHYS_OFFSET. Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org> Acked-by: Tony Lindgren <tony@atomide.com> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Acked-by: David Brown <davidb@codeaurora.org> Acked-by: Eric Miao <eric.y.miao@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-02-15ARM: Defer lookup of machine_type to setup.cRussell King1-1/+38
Since the debug macros no longer depend on the machine type information, the machine type lookup can be deferred to setup_arch() in setup.c which simplifies the code somewhat. We also move the __error_a functionality into setup.c for displaying a message when a bad machine ID is passed to the kernel via the LL debug code. We also log this into the kernel ring buffer which makes it possible to retrieve the message via a debugger. Original idea from Grant Likely. Acked-by: Grant Likely <grant.likely@secretlab.ca> Tested-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-02-15ARM: 6674/1: LPAE: use long long format when printing physical addresses and ptesWill Deacon1-1/+1
For the Kernel to support 2 level and 3 level page tables, physical addresses (and also page table entries) need to be 32 or 64-bits depending upon the configuration. This patch uses the %08llx conversion specifier for physical addresses and page table entries, ensuring that they are cast to (long long) so that common code can be used regardless of the datatype widths. Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-01-14ARM: 6625/1: use memblock memory regions for "System RAM" I/O resourcesDima Zavin1-10/+6
Do not use memory bank info to request the "system ram" resources as they do not track holes created by memblock_remove inside machine's reserve callback. If the removed memory is passed as platform_device's ioresource, then drivers that call request_mem_region would fail due to a conflict with the incorrectly configured system ram resource. Instead, iterate through the regions of memblock.memory and add those as "System RAM" resources. Signed-off-by: Dima Zavin <dima@android.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-01-12ARM: 6620/1: Change misleading warning when CONFIG_CMDLINE_FORCE is usedAlexander Holler1-2/+4
When CONFIG_CMDLINE_FORCE is used, the warning Ignoring unrecognised tag 0x54410009 was displayed. Change this to Ignoring tag cmdline (using the default kernel command line) Signed-off-by: Alexander Holler <holler@ahsoftware.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-24ARM: provide an early platform initialization hookRussell King1-0/+3
This allows platforms to hook into the initialization early to setup things like scheduler clocks, etc. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-24ARM: simplify early machine init hooksRussell King1-11/+4
Rather than storing each machine init hook separately, store a pointer to the machine description record and dereference this instead. This pointer is only available while the init sections are present, which is not a problem as we only use it from init code. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-24ARM: 6532/1: Allow machine to specify it's own IRQ handlers at run-timeeric miao1-0/+3
Normally different ARM platform has different way to decode the IRQ hardware status and demultiplex to the corresponding IRQ handler. This is highly optimized by macro irq_handler in entry-armv.S, and each machine defines their own macro to decode the IRQ number. However, this prevents multiple machine classes to be built into a single kernel. By allowing each machine to specify thier own handler, and making function pointer 'handle_arch_irq' to point to it at run time, this can be solved. And introduce CONFIG_MULTI_IRQ_HANDLER to allow both solutions to work. Comparing with the highly optimized macro of irq_handler, the new function must be written with care not to lose too much performance. And the IPI stuff on SMP is expected to move to the provided arch IRQ handler as well. The assembly code to invoke handle_arch_irq is optimized by Russell King. Signed-off-by: Eric Miao <eric.miao@canonical.com> Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-05ARM: move high-usage mostly read variables in setup.c to __read_mostlyRussell King1-8/+8
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-18Merge branches 'at91', 'dcache', 'ftrace', 'hwbpt', 'misc', 'mmci', 's3c', 'st-ux' and 'unwind' into develRussell King1-5/+41
2010-10-08ARM: vmlinux.lds: Refer to start of .data using _sdata rather than _dataRussell King1-1/+1
Use _sdata as the start of the data section, rather than _data. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-08ARM: 6431/1: fix isb regression on CPU < v7Linus Walleij1-4/+5
The kernel does not compile for my ARM926EJ-S system U300 due to the isb instruction inserted in generic assember statement from commit 8925ec4c530094b878e7e28a1fd78e7122afd973, "ARM: 6385/1: setup: detect aliasing I-cache when D-cache is non-aliasing" hey the isb is only available when assembling for v7 so let's use the generic isb() macro from setup.h instead. Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-04ARM: 6385/1: setup: detect aliasing I-cache when D-cache is non-aliasingWill Deacon1-3/+36
Currently, the Kernel assumes that if a CPU has a non-aliasing D-cache then the I-cache is also non-aliasing. This may not be true on ARM cores from v6 onwards, which may have aliasing I-caches but non-aliasing D-caches. This patch adds a cpu_has_aliasing_icache function, which is called from cacheid_init and adds CACHEID_VIPT_I_ALIASING to the cacheid when appropriate. A utility macro, icache_is_vipt_aliasing(), is also provided. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-04ARM: Allow SMP kernels to boot on UP systemsRussell King1-1/+3
UP systems do not implement all the instructions that SMP systems have, so in order to boot a SMP kernel on a UP system, we need to rewrite parts of the kernel. Do this using an 'alternatives' scheme, where the kernel code and data is modified prior to initialization to replace the SMP instructions, thereby rendering the problematical code ineffectual. We use the linker to generate a list of 32-bit word locations and their replacement values, and run through these replacements when we detect a UP system. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-07-31Merge branch 'devel-stable' into develRussell King1-0/+11
Conflicts: arch/arm/kernel/entry-armv.S arch/arm/kernel/setup.c arch/arm/mm/init.c
2010-07-31Merge branches 'at91', 'ep93xx', 'kexec', 'iop', 'lmb', 'nomadik', 'nuc', 'pl', 'spear' and 'versatile' into develRussell King1-2/+98
2010-07-27ARM: Convert platform reservations to use LMB rather than bootmemRussell King1-1/+1
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-07-27ARM: initial LMB trialRussell King1-0/+3
Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-07-16ARM: Remove DISCONTIGMEM supportRussell King1-2/+1
Everything should now be using sparsemem rather than discontigmem, so remove the code supporting discontigmem from ARM. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-07-09ARM: 6122/1: kdump: add support for elfcorehdr parameterMika Westerberg1-0/+25
This parameter is used by primary kernel to pass address of vmcore header to the dump capture kernel. Signed-off-by: Mika Westerberg <ext-mika.1.westerberg@nokia.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-07-09ARM: 6116/1: kdump: reserve memory for crashkernelMika Westerberg1-0/+51
Implemented ARM support for command line option "crashkernel=size@start" which allows user to reserve some memory for a dump capture kernel. Signed-off-by: Mika Westerberg <ext-mika.1.westerberg@nokia.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-07-09ARM: 6207/1: Replace CONFIG_HAS_TLS_REG with HWCAP_TLS and check for it on V6Tony Lindgren1-0/+17
The TLS register is only available on ARM1136 r1p0 and later. Set HWCAP_TLS flags if hardware TLS is available and test for it if CONFIG_CPU_32v6K is not set for V6. Note that we set the TLS instruction in __kuser_get_tls dynamically as suggested by Jamie Lokier <jamie@shareable.org>. Also the __switch_to code is optimized out in most cases as suggested by Nicolas Pitre <nico@fluxnic.net>. Reviewed-by: Nicolas Pitre <nicolas.pitre@linaro.org> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-07-09ARM: 6197/2: preliminary support for sparse IRQeric miao1-0/+1
So to allow NR_IRQS to be dynamic and platforms to specify the number of IRQs really needed. Acked-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Eric Miao <eric.y.miao@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-07-07ARM: deprecate support for old way to pass kernel parametersUwe Kleine-König1-0/+11
This was deprecated in 2001 and announced to live on for 5 years. For now provide a kernel parameter for those who still need it. Acked-by: Eric Miao <eric.miao@canonical.com> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2010-05-24ARM: 5939/1: ARM: Add option CMDLINE_FORCE to force usage of the in-kernel cmdlineAlexander Holler1-0/+2
Add an option to force usage of the in-kernel cmdline even if the boot loader passes another command string to the kernel. Useful if someone cannot or don't want to change the command-line options of the boot loader but is able to change the kernel. Signed-off-by: Alexander Holler <holler@ahsoftware.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-03-01Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds1-48/+31
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (100 commits) ARM: Eliminate decompressor -Dstatic= PIC hack ARM: 5958/1: ARM: U300: fix inverted clk round rate ARM: 5956/1: misplaced parentheses ARM: 5955/1: ep93xx: move timer defines into core.c and document ARM: 5954/1: ep93xx: move gpio interrupt support to gpio.c ARM: 5953/1: ep93xx: fix broken build of clock.c ARM: 5952/1: ARM: MM: Add ARM_L1_CACHE_SHIFT_6 for handle inside each ARCH Kconfig ARM: 5949/1: NUC900 add gpio virtual memory map ARM: 5948/1: Enable timer0 to time4 clock support for nuc910 ARM: 5940/2: ARM: MMCI: remove custom DBG macro and printk ARM: make_coherent(): fix problems with highpte, part 2 MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself ARM: 5945/1: ep93xx: include correct irq.h in core.c ARM: 5933/1: amba-pl011: support hardware flow control ARM: 5930/1: Add PKMAP area description to memory.txt. ARM: 5929/1: Add checks to detect overlap of memory regions. ARM: 5928/1: Change type of VMALLOC_END to unsigned long. ARM: 5927/1: Make delimiters of DMA area globally visibly. ARM: 5926/1: Add "Virtual kernel memory..." printout. ARM: 5920/1: OMAP4: Enable L2 Cache ... Fix up trivial conflict in arch/arm/mach-mx25/clock.c
2010-02-18ARM: 5938/1: ARM: L2: export outer_cache_fnsSantosh Shilimkar1-0/+1
The 'outer_cache' variable is needed by the outer_inv_range(), outer_clean_range() and outer_flush_range() functions, which are declared as inline in asm/cacheflush.h. Otherwise drivers built as a loadable module, which access these functions, will have an undefined symbol. Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-02-15ARM: 5906/1: arm: change command_line to cmd_lineJeremy Kerr1-4/+4
drivers/of/fdt expects a cmd_line symbol, while arm uses command_line. Change to the former, so that we can eventually share with the fdt code. Signed-off-by: Jeremy Kerr <jeremy.kerr@canonical.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-02-15ARM: 5880/1: arm: use generic infrastructure for early paramsJeremy Kerr1-46/+16
The ARM setup code includes its own parser for early params, there's also one in the generic init code. This patch removes __early_init (and related code) from arch/arm/kernel/setup.c, and changes users to the generic early_init macro instead. The generic macro takes a char * argument, rather than char **, so we need to update the parser functions a little. Signed-off-by: Jeremy Kerr <jeremy.kerr@canonical.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-02-15ARM: Move creation of /proc/cpu out of alignment.cRussell King1-1/+14
Always creating this directory avoids other users having to jump through silly hoops when they want to share this directory. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-09-15ARM: 5580/2: ARM TCM (Tightly-Coupled Memory) support v3Linus Walleij1-0/+2
This adds the TCM interface to Linux, when active, it will detect and report TCM memories and sizes early in boot if present, introduce generic TCM memory handling, provide a generic TCM memory pool and select TCM memory for the U300 platform. See the Documentation/arm/tcm.txt for documentation. Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-07-24Thumb-2: Implementation of the unified start-up and exceptions codeCatalin Marinas1-7/+21
This patch implements the ARM/Thumb-2 unified kernel start-up and exception handling code. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2009-03-13Merge branch 'for-rmk' of git://git.pengutronix.de/git/imx/linux-2.6 into develRussell King1-6/+7
Conflicts: arch/arm/mach-at91/gpio.c
2009-03-03[ARM] 5417/1: Set the correct cacheid for ARMv6 CPUs with ARMv7 style MMUCatalin Marinas1-6/+7
The cacheid_init() function assumes that if cpu_architecture() returns 7, the caches are VIPT_NONALIASING. The cpu_architecture() function returns the version of the supported MMU features (e.g. TEX remapping) but it doesn't make any assumptions about the cache type. The patch adds the checking of the Cache Type Register for the ARMv7 format. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-02-19[ARM] 5383/2: unwind: Add core support for ARM stack unwindingCatalin Marinas1-0/+3
This patch adds the main functionality for parsing the stack unwinding information generated by the ARM EABI toolchains. The unwinding information consists of an index with a pair of words per function and a table with unwinding instructions. For more information, see "Exception Handling ABI for the ARM Architecture" at: http://infocenter.arm.com/help/topic/com.arm.doc.subset.swdev.abi/index.html Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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