aboutsummaryrefslogtreecommitdiff
path: root/arch/arm/kernel/setup.c
AgeCommit message (Collapse)AuthorFilesLines
2011-12-05Merge branch 'vmalloc' of git://git.linaro.org/people/nico/linux into ↵Russell King1-0/+8
devel-stable
2011-12-05Merge branch 'for-rmk' of ↵Russell King1-2/+4
git://git.kernel.org/pub/scm/linux/kernel/git/will/linux into devel-stable Conflicts: arch/arm/common/gic.c arch/arm/plat-omap/include/plat/common.h
2011-11-18ARM: sort the meminfo array earlierNicolas Pitre1-0/+8
The meminfo array has to be sorted before sanity_check_meminfo() in arch/arm/mm/mmu.c is called for it to work properly. This also allows for a simpler find_limits() in arch/arm/mm/init.c. The sort is moved to arch/arm/kernel/setup.c because that's where the meminfo array is populated. Eventually this should be improved upon to make the memory bank parser a bit more robust against problems such as overlapping memory ranges. Signed-off-by: Nicolas Pitre <[email protected]>
2011-11-12ARM: 7160/1: setup: avoid overflowing {elf,arch}_name from proc_info_listWill Deacon1-2/+4
setup_processor copies the arch_name and elf_name fields out of the selected proc_info_list into two fixed size buffers. Since the proc_info_list structure is defined in a proc_*.S assembly file, this can lead to subtle errors if the strings defined there are too long (for example, corrupting the machine ID). This patch uses snprintf instead of sprintf to ensure that these buffers are not overrun. Signed-off-by: Will Deacon <[email protected]> Signed-off-by: Russell King <[email protected]>
2011-11-10ARM: restart: allow platforms more flexibility specifying restart modeRussell King1-2/+2
Change 'soft_reboot' into a more generic 'restart_mode' variable, allowing the default restart mode to be specified. Acked-by: Nicolas Pitre <[email protected]> Acked-by: Will Deacon <[email protected]> Acked-by: H Hartley Sweeten <[email protected]> Signed-off-by: Russell King <[email protected]>
2011-11-10ARM: restart: add restart hook to machine_desc recordRussell King1-0/+3
Add a restart hook to the machine_desc record so we don't have to populate all platforms with init_early methods to initialize the arm_pm_restart function pointer. Acked-by: Nicolas Pitre <[email protected]> Acked-by: Will Deacon <[email protected]> Acked-by: H Hartley Sweeten <[email protected]> Acked-by: Tony Lindgren <[email protected]> Signed-off-by: Russell King <[email protected]>
2011-10-31arm: convert core files from module.h to export.hPaul Gortmaker1-1/+1
Many of the core ARM kernel files are not modules, but just including module.h for exporting symbols. Now these files can use the lighter footprint export.h for this role. There are probably lots more, but ARM files of mach-* and plat-* don't get coverage via a simple yesconfig build. They will have to be cleaned up and tested via using their respective configs. Signed-off-by: Paul Gortmaker <[email protected]>
2011-10-28Merge branch 'devel-stable' of ↵Linus Torvalds1-19/+2
http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm * 'devel-stable' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm: (178 commits) ARM: 7139/1: fix compilation with CONFIG_ARM_ATAG_DTB_COMPAT and large TEXT_OFFSET ARM: gic, local timers: use the request_percpu_irq() interface ARM: gic: consolidate PPI handling ARM: switch from NO_MACH_MEMORY_H to NEED_MACH_MEMORY_H ARM: mach-s5p64x0: remove mach/memory.h ARM: mach-s3c64xx: remove mach/memory.h ARM: plat-mxc: remove mach/memory.h ARM: mach-prima2: remove mach/memory.h ARM: mach-zynq: remove mach/memory.h ARM: mach-bcmring: remove mach/memory.h ARM: mach-davinci: remove mach/memory.h ARM: mach-pxa: remove mach/memory.h ARM: mach-ixp4xx: remove mach/memory.h ARM: mach-h720x: remove mach/memory.h ARM: mach-vt8500: remove mach/memory.h ARM: mach-s5pc100: remove mach/memory.h ARM: mach-tegra: remove mach/memory.h ARM: plat-tcc: remove mach/memory.h ARM: mach-mmp: remove mach/memory.h ARM: mach-cns3xxx: remove mach/memory.h ... Fix up mostly pretty trivial conflicts in: - arch/arm/Kconfig - arch/arm/include/asm/localtimer.h - arch/arm/kernel/Makefile - arch/arm/mach-shmobile/board-ap4evb.c - arch/arm/mach-u300/core.c - arch/arm/mm/dma-mapping.c - arch/arm/mm/proc-v7.S - arch/arm/plat-omap/Kconfig largely due to some CONFIG option renaming (ie CONFIG_PM_SLEEP -> CONFIG_ARM_CPU_SUSPEND for the arm-specific suspend code etc) and addition of NEED_MACH_MEMORY_H next to HAVE_IDE.
2011-10-17ARM: 7062/1: cache: detect PIPT I-cache using CTRWill Deacon1-2/+13
The Cache Type Register L1Ip field identifies I-caches with a PIPT policy using the encoding 11b. This patch extends the cache policy parsing to identify PIPT I-caches correctly and prevent them from being treated as VIPT aliasing in cases where they are sufficiently large. Signed-off-by: Will Deacon <[email protected]> Signed-off-by: Russell King <[email protected]>
2011-10-17ARM: platform fixups: remove mdesc argument to fixup functionRussell King1-1/+1
Get rid of the mdesc pointer in the fixup function call. No one uses the mdesc pointer, it shouldn't be modified anyway, and we can't wrap it, so let's remove it. Platform files found by: $ regexp=$(git grep -h '\.fixup.*=' arch/arm | sed 's!.*= *\([^,]*\),* *!\1!' | sort -u | tr '\n' '|' | sed 's,|$,,;s,|,\\|,g') $ git grep $regexp arch/arm Acked-by: Nicolas Pitre <[email protected]> Signed-off-by: Russell King <[email protected]>
2011-10-17ARM: 7029/1: Make cpu_architecture into a global variableDave Martin1-1/+19
The CPU architecture really should not be changing at runtime, so make it a global variable instead of a function. The cpu_architecture() function declared in <asm/system.h> remains the correct way to read this variable from C code. Signed-off-by: Dave Martin <[email protected]> Reviewed-by: Jon Medhurst <[email protected]> Signed-off-by: Russell King <[email protected]>
2011-09-16Merge branch 'for-rmk' of git://linux-arm.org/linux-2.6-wd into devel-stableRussell King1-7/+8
Conflicts: arch/arm/mach-imx/mach-cpuimx27.c
2011-08-21ARM: remove boot_params from struct machine_descNicolas Pitre1-19/+0
Now that there is no more users, we can remove it from the kernel. Signed-off-by: Nicolas Pitre <[email protected]> Acked-by: Arnd Bergmann <[email protected]>
2011-08-21ARM: introduce atag_offset to replace boot_paramsNicolas Pitre1-0/+2
The boot_params member of the mdesc structure is used to provide a default physical address for the ATAG list. Since this value is fixed at compile time and sometimes based on constants such as ARCH_PHYS_OFFSET, it gets in the way of runtime PHYS_OFFSET and CONFIG_ARM_PATCH_PHYS_VIRT usage. Let's introduce atag_offset which should contains only the relative offset from PHYS_OFFSET instead of an absolute value, in preparation to move all instance of boot_params over to it. Signed-off-by: Nicolas Pitre <[email protected]> Tested-by: H Hartley Sweeten <[email protected]> Tested-by: Petr Štetiar <[email protected]> Acked-by: Arnd Bergmann <[email protected]>
2011-08-12ARM: cache: detect VIPT aliasing I-cache on ARMv6Will Deacon1-7/+8
The current cache detection code does not check for an aliasing I-cache if the D-cache is found to be VIPT aliasing. This patch fixes the problem by always checking for an aliasing I-cache on v6 and later. Signed-off-by: Will Deacon <[email protected]>
2011-07-22Merge branch 'devel-stable' into for-nextRussell King1-0/+10
Conflicts: arch/arm/kernel/entry-armv.S
2011-07-22Merge branches 'btc', 'dma', 'entry', 'fixes', 'linker-layout', 'misc', ↵Russell King1-49/+52
'mmci', 'suspend' and 'vfp' into for-next
2011-07-18Merge branch 'dma' of http://git.linaro.org/git/people/nico/linux into ↵Russell King1-0/+6
devel-stable
2011-07-18ARM: add dma_zone_size to the machine_desc structureNicolas Pitre1-0/+6
Signed-off-by: Nicolas Pitre <[email protected]>
2011-07-15Merge branch 'kprobes-thumb' of git://git.yxit.co.uk/linux into devel-stableRussell King1-0/+2
2011-07-07ARM: hwcaps: add new HWCAP defines for ARMv7-AWill Deacon1-0/+4
Modern ARMv7-A cores can optionally implement these new hardware features: - VFPv4: The latest version of the ARMv7 vector floating-point extensions, including hardware support for fused multiple accumulate. D16 or D32 variants may be implemented. - Integer divide: The SDIV and UDIV instructions provide signed and unsigned integer division in hardware. When implemented, these instructions may be available in either both Thumb and ARM, or Thumb only. This patch adds new HWCAP defines to describe these new features. The integer divide capabilities are split into two bits for ARM and Thumb respectively. Whilst HWCAP_IDIVA should never be set if HWCAP_IDIVT is clear, separating the bits makes it easier to interpret from userspace. Signed-off-by: Will Deacon <[email protected]>
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 <[email protected]> Signed-off-by: Russell King <[email protected]>
2011-06-24ARM: pm: arrange for cpu_proc_init() to be called on resumeRussell King1-49/+50
cpu_proc_init() does processor specific initialization, which we do at boot time. We have been omitting to do this on resume, which causes some of this initialization to be skipped. We've also been skipping this on SMP initialization too. Ensure that cpu_proc_init() is always called appropriately by moving it into cpu_init(), and move cpu_init() to a more appropriate point in the boot initialization. Tested-by: Kevin Hilman <[email protected]> Acked-by: Jean Pihet <[email protected]> Signed-off-by: Russell King <[email protected]>
2011-05-25Merge branch 'devicetree/arm-next' of git://git.secretlab.ca/git/linux-2.6 ↵Russell King1-32/+58
into devel-stable
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 <[email protected]> - 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 <[email protected]>] Tested-by: Tony Lindgren <[email protected]> Acked-by: Nicolas Pitre <[email protected]> Acked-by: Russell King <[email protected]> Signed-off-by: Grant Likely <[email protected]>
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 <[email protected]> Acked-by: Nicolas Pitre <[email protected]> Acked-by: Russell King <[email protected]> Signed-off-by: Grant Likely <[email protected]>
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 <[email protected]> Reviewed-by: Bjorn Andersson <[email protected]> Signed-off-by: Oskar Andero <[email protected]> Acked-by: Nicolas Pitre <[email protected]> Acked-by: Uwe Kleine-König <[email protected]> Signed-off-by: Russell King <[email protected]>
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 <[email protected]> Tested-by: Tony Lindgren <[email protected]> Acked-by: Nicolas Pitre <[email protected]> Acked-by: Russell King <[email protected]> Signed-off-by: Grant Likely <[email protected]>
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, ↵Olaf Hering1-24/+0
setup_elfcorehdr and saved_max_pfn 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. [[email protected]: additional #includes] [[email protected]: remove elfcorehdr_addr export] [[email protected]: fix for Tejun's mm/nobootmem.c changes] Signed-off-by: Olaf Hering <[email protected]> Cc: Russell King <[email protected]> Cc: "Luck, Tony" <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Paul Mundt <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: "H. Peter Anvin" <[email protected]> Cc: Johannes Weiner <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
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 <[email protected]> Signed-off-by: Russell King <[email protected]>
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 <[email protected]> Signed-off-by: Russell King <[email protected]>
2011-02-21ARM: 6673/1: LPAE: use phys_addr_t instead of unsigned long for start of ↵Will Deacon1-2/+3
membanks 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 <[email protected]> Signed-off-by: Will Deacon <[email protected]> Signed-off-by: Russell King <[email protected]>
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 <[email protected]> Signed-off-by: Russell King <[email protected]>
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 <[email protected]> Acked-by: Tony Lindgren <[email protected]> Acked-by: Kukjin Kim <[email protected]> Acked-by: David Brown <[email protected]> Acked-by: Eric Miao <[email protected]> Signed-off-by: Russell King <[email protected]>
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 <[email protected]> Tested-by: Tony Lindgren <[email protected]> Signed-off-by: Russell King <[email protected]>
2011-02-15ARM: 6674/1: LPAE: use long long format when printing physical addresses and ↵Will Deacon1-1/+1
ptes 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 <[email protected]> Signed-off-by: Will Deacon <[email protected]> Signed-off-by: Russell King <[email protected]>
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 <[email protected]> Signed-off-by: Russell King <[email protected]>
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 <[email protected]> Signed-off-by: Russell King <[email protected]>
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 <[email protected]>
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 <[email protected]>
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 <[email protected]> Acked-by: Nicolas Pitre <[email protected]> Signed-off-by: Russell King <[email protected]>
2010-12-05ARM: move high-usage mostly read variables in setup.c to __read_mostlyRussell King1-8/+8
Signed-off-by: Russell King <[email protected]>
2010-10-18Merge branches 'at91', 'dcache', 'ftrace', 'hwbpt', 'misc', 'mmci', 's3c', ↵Russell King1-5/+41
'st-ux' and 'unwind' into devel
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 <[email protected]>
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 <[email protected]> Signed-off-by: Linus Walleij <[email protected]> Signed-off-by: Russell King <[email protected]>
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 <[email protected]> Signed-off-by: Russell King <[email protected]>
Powered by cgit, Gruvboxed by Blaster4385.