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* MIPS: Octeon: Changes to support readq()/writeq() usage.Steven J. Hill2016-07-111-1/+19
| | | | | | | | | | | | | | Update OCTEON port mangling code to support readq() and writeq() functions to allow driver code to be more portable. Updates also for word and long function pairs. We also remove SWAP_IO_SPACE for OCTEON platforms as the function macros are redundant with the new mangling code. Signed-off-by: Steven J. Hill <steven.hill@cavium.com> Acked-by: David Daney <david.daney@cavium.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/13780/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Octeon: device_tree_init: fill mac addresses when using appended dtbAaro Koskinen2016-05-131-1/+7
| | | | | | | | | | Fill MAC addresses from bootinfo when using appended DTB. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Acked-by: David Daney <david.daney@cavium.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/12590/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Octeon: device_tree_init: use separate pass to fill mac addressesAaro Koskinen2016-05-131-0/+2
| | | | | | | | | | | Use separate pass to fill MAC addresses. This is needed because we want to do this also for the appended DTB. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Acked-by: David Daney <david.daney@cavium.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/12588/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Octeon: Use model string from DTB for unknown board typeAaro Koskinen2016-05-131-2/+10
| | | | | | | | | | | | | Use model string from DTB for board type if the board is unknown. This is more informative, e.g. with EdgeRouter Pro the /proc/cpuinfo will display "ubnt,e200 (CN6120p1.1-1000-NSP)" instead of misleading "Unsupported Board". Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Cc: David Daney <ddaney.cavm@gmail.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/12582/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Octeon: Initialize system type string after device tree init.Aaro Koskinen2016-05-131-4/+2
| | | | | | | | | | Initialize system type string after device tree init. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Cc: David Daney <ddaney.cavm@gmail.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/12583/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Octeon: board_type_to_string: return NULL for unsupported boardAaro Koskinen2016-05-131-2/+7
| | | | | | | | | | Return NULL for unsupported board. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Cc: David Daney <ddaney.cavm@gmail.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/12581/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: OCTEON: Add SMP support for OCTEON cn78xx et al.David Daney2016-05-131-3/+1
| | | | | | | | | | | | | | OCTEON chips with the CIU3 interrupt controller use a different IPI mechanism that previous models. Add plat_smp_ops for the cn78xx and probing code to choose between the two types of ops. Signed-off-by: David Daney <david.daney@cavium.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/12499/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: OCTEON: Don't attempt to use nonexistent registers on OCTEON III models.David Daney2016-05-131-13/+21
| | | | | | | | | | | Attempts to read the nonexistent registers results in bus errors. Either use registers that exist, or don't do the access as appropriate. Signed-off-by: David Daney <david.daney@cavium.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/12502/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: OCTEON: Extend number of supported CPUs past 32David Daney2016-05-131-3/+16
| | | | | | | | | | | | To support more than 48 CPUs, the bootinfo structure grows a new coremask structure. Add the definition of the structure and add it to struct cvmx_bootinfo. In prom_init(), copy the new coremask data into the sysinfo structure, and use it in smp_setup(). Signed-off-by: David Daney <david.daney@cavium.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/12319/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Octeon: Support APPENDED_DTBAaro Koskinen2015-11-121-2/+9
| | | | | | | | | Use appended DTB when available. Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/11115/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Octeon: Fix kernel panic on startup from memory corruptionMatt Bennett2015-10-021-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | During development it was found that a number of builds would panic during the kernel init process, more specifically in 'delayed_fput()'. The panic showed the kernel trying to access a memory address of '0xb7fdc00' while traversing the 'delayed_fput_list' structure. Comparing this memory address to the value of the pointer used on builds that did not panic confirmed that the pointer on crashing builds must have been corrupted at some stage earlier in the init process. By traversing the list earlier and earlier in the code it was found that 'plat_mem_setup()' was responsible for corrupting the list. Specifically the line: memory = cvmx_bootmem_phy_alloc(mem_alloc_size, __pa_symbol(&__init_end), -1, 0x100000, CVMX_BOOTMEM_FLAG_NO_LOCKING); Which would eventually call: cvmx_bootmem_phy_set_size(new_ent_addr, cvmx_bootmem_phy_get_size (ent_addr) - (desired_min_addr - ent_addr)); Where 'new_ent_addr'=0x4800000 (the address of 'delayed_fput_list') and the second argument (size)=0xb7fdc00 (the address causing the kernel panic). The job of this part of 'plat_mem_setup()' is to allocate chunks of memory for the kernel to use. At the start of each chunk of memory the size of the chunk is written, hence the value 0xb7fdc00 is written onto memory at 0x4800000, therefore the kernel panics when it goes back to access 'delayed_fput_list' later on in the initialisation process. On builds that were not crashing it was found that the compiler had placed 'delayed_fput_list' at 0x4800008, meaning it wasn't corrupted (but something else in memory was overwritten). As can be seen in the first function call above the code begins to allocate chunks of memory beginning from the symbol '__init_end'. The MIPS linker script (vmlinux.lds.S) however defines the .bss section to begin after '__init_end'. Therefore memory within the .bss section is allocated to the kernel to use (System.map shows 'delayed_fput_list' and other kernel structures to be in .bss). To stop the kernel panic (and the .bss section being corrupted) memory should begin being allocated from the symbol '_end'. Signed-off-by: Matt Bennett <matt.bennett@alliedtelesis.co.nz> Acked-by: David Daney <david.daney@cavium.com> Cc: linux-mips@linux-mips.org Cc: aleksey.makarov@auriga.com Patchwork: https://patchwork.linux-mips.org/patch/11251/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: mark prom_free_prom_memory() everywhere with __initAaro Koskinen2015-04-011-1/+1
| | | | | | | | | | | On OCTEON the function is non-trivial and we can potentially even save some memory. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Acked-by: David Daney <david.daney@cavium.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/9338/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: OCTEON: Use correct CSR to soft resetChandrakala Chavva2015-04-011-1/+4
| | | | | | | | | | | | | | | This fixes reboot for Octeon III boards [ralf@linux-mips.org: Dropped segment for function cvmx_reset_octeon() which was removed by the preceeding commit.] Signed-off-by: Chandrakala Chavva <cchavva@caviumnetworks.com> Signed-off-by: Aleksey Makarov <aleksey.makarov@auriga.com> Cc: David Daney <david.daney@cavium.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/9464/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: OCTEON: Add semaphore to serialize bootbus accesses.David Daney2015-04-011-0/+3
| | | | | | | | | | | | | | | | | | | | | Some hardware blocks attached to the OCTEON bootbus run asynchronously to accesses from the CPUs. These include MMC/SD host, CF(when using DMA), and NAND controller. A bus error, or corrupt data may occur if a CPU is trying to access a bootbus connected device at the same time the bus is running asynchronous operations. To work around these problems we add this semaphore that must be acquired before initiating bootbus activity. Subsequent patches will add users for this. Signed-off-by: David Daney <david.daney@cavium.com> [aleksey.makarov@auriga.com: combine the patches] Signed-off-by: Aleksey Makarov <aleksey.makarov@auriga.com> Signed-off-by: Chandrakala Chavva <cchavva@caviumnetworks.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/9459/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: OCTEON: More OCTEONIII supportChandrakala Chavva2015-02-201-1/+7
| | | | | | | | | | | | Read clock rate from the correct CSR. Don't clear COP0_DCACHE for OCTEONIII. Signed-off-by: Chandrakala Chavva <cchavva@caviumnetworks.com> Signed-off-by: Aleksey Makarov <aleksey.makarov@auriga.com> Signed-off-by: David Daney <david.daney@cavium.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/8945/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: OCTEON: Core-15169 Workaround and general CVMSEG cleanup.David Daney2015-02-201-3/+1
| | | | | | | | | Signed-off-by: David Daney <david.daney@cavium.com> Signed-off-by: Aleksey Makarov <aleksey.makarov@auriga.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/8943/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: OCTEON: Update octeon-model.h code for new SoCs.David Daney2015-02-201-1/+1
| | | | | | | | | | | Add coverage for OCTEON III models. Signed-off-by: David Daney <david.daney@cavium.com> Signed-off-by: Aleksey Makarov <aleksey.makarov@auriga.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/8942/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: OCTEON: Implement DCache errata workaround for all CN6XXXDavid Daney2015-02-201-3/+4
| | | | | | | | | | | Make messages refer to all CN6XXX. Signed-off-by: David Daney <david.daney@cavium.com> Signed-off-by: Aleksey Makarov <aleksey.makarov@auriga.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/8941/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: OCTEON: Save/Restore wider multiply registers in OCTEON III CPUsDavid Daney2015-02-201-0/+37
| | | | | | | | | | | | | | | | | | The wide multiplier is twice as wide, so we need to save twice as much state. Detect the multiplier type (CPU type) at start up and install model specific handlers. [aleksey.makarov@auriga.com: conflict resolution, support for old compilers] Signed-off-by: David Daney <david.daney@cavium.com> Signed-off-by: Leonid Rosenboim <lrosenboim@caviumnetworks.com> Signed-off-by: Aleksey Makarov <aleksey.makarov@auriga.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/8933/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* treewide: fix typo in printk and KconfigMasanari Iida2014-11-201-2/+2
| | | | | | | | | This patch fix spelling typo in printk and Kconfig within various part of kernel sources. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* MIPS: Octeon: Remove special case for simulator command line.David Daney2014-10-221-9/+0
| | | | | | | | | | | | | | | There is no reason to have the kernel to append commands when running under the simulator, the simulator is perfectly capable of supplying the necessary command line arguments. Furthermore, if the simulator needs something different than what is hard coded in the kernel, it cannot get it if the kernel overrides it. Fix/Simplify the whole thing by removing this bit. Signed-off-by: David Daney <david.daney@cavium.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/8152/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: OCTEON: make get_system_type() thread-safeAaro Koskinen2014-08-191-5/+13
| | | | | | | | | | | | | | | | | | | | | get_system_type() is not thread-safe on OCTEON. It uses static data, also more dangerous issue is that it's calling cvmx_fuse_read_byte() every time without any synchronization. Currently it's possible to get processes stuck looping forever in kernel simply by launching multiple readers of /proc/cpuinfo: (while true; do cat /proc/cpuinfo > /dev/null; done) & (while true; do cat /proc/cpuinfo > /dev/null; done) & ... Fix by initializing the system type string only once during the early boot. Signed-off-by: Aaro Koskinen <aaro.koskinen@nsn.com> Cc: stable@vger.kernel.org Reviewed-by: Markos Chandras <markos.chandras@imgtec.com> Patchwork: http://patchwork.linux-mips.org/patch/7437/ Signed-off-by: James Hogan <james.hogan@imgtec.com>
* MIPS: Add common plat_irq_dispatch declarationSergey Ryazanov2014-08-191-1/+0
| | | | | | | | | | Add common declaration to get rid of following sparse warning: "symbol 'plat_irq_dispatch' was not declared. Should it be static?" Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com> Cc: Linux MIPS <linux-mips@linux-mips.org> Patchwork: https://patchwork.linux-mips.org/patch/7539/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds2014-06-101-17/+0
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull MIPS updates from Ralf Baechle: - three fixes for 3.15 that didn't make it in time - limited Octeon 3 support. - paravirtualization support - improvment to platform support for Netlogix SOCs. - add support for powering down the Malta eval board in software - add many instructions to the in-kernel microassembler. - add support for the BPF JIT. - minor cleanups of the BCM47xx code. - large cleanup of math emu code resulting in significant code size reduction, better readability of the code and more accurate emulation. - improvments to the MIPS CPS code. - support C3 power status for the R4k count/compare clock device. - improvments to the GIO support for older SGI workstations. - increase number of supported CPUs to 256; this can be reached on certain embedded multithreaded ccNUMA configurations. - various small cleanups, updates and fixes * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (173 commits) MIPS: IP22/IP28: Improve GIO support MIPS: Octeon: Add twsi interrupt initialization for OCTEON 3XXX, 5XXX, 63XX DEC: Document the R4k MB ASIC mini interrupt controller DEC: Add self as the maintainer MIPS: Add microMIPS MSA support. MIPS: Replace calls to obsolete strict_strto call with kstrto* equivalents. MIPS: Replace obsolete strict_strto call with kstrto MIPS: BFP: Simplify code slightly. MIPS: Call find_vma with the mmap_sem held MIPS: Fix 'write_msa_##' inline macro. MIPS: Fix MSA toolchain support detection. mips: Update the email address of Geert Uytterhoeven MIPS: Add minimal defconfig for mips_paravirt MIPS: Enable build for new system 'paravirt' MIPS: paravirt: Add pci controller for virtio MIPS: Add code for new system 'paravirt' MIPS: Add functions for hypervisor call MIPS: OCTEON: Add OCTEON3 to __get_cpu_type MIPS: Add function get_ebase_cpunum MIPS: Add minimal support for OCTEON3 to c-r4k.c ...
| * MIPS: Octeon: Remove checks for CONFIG_CAVIUM_GDBPaul Bolle2014-05-231-11/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Three checks for CONFIG_CAVIUM_GDB were added in v2.6.29. But the Kconfig symbol CAVIUM_GDB was never added to the tree. Remove these checks. Also remove the last reference to octeon_get_boot_debug_flag(). There is no definition of that function anyway. Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Tested-by: Andreas Herrmann <andreas.herrmann@caviumnetworks.com>) Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/6976/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * MIPS: Remove check for CONFIG_CAVIUM_REPORT_SINGLE_BIT_ECCPaul Bolle2014-05-231-6/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A check for CONFIG_CAVIUM_REPORT_SINGLE_BIT_ECC was added in v2.6.29, but without the related Kconfig symbol. Remove this check. Also remove the test for an "ecc_verbose" kernel parameter. It is undocumented and has no effect anyway. Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/6955/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* | mips: octeon: convert to use unflatten_and_copy_device_treeRob Herring2014-04-301-15/+5
|/ | | | | | | | | | | The octeon FDT code can be simplified by using unflatten_and_copy_device_tree function. This removes all accesses to FDT header data by the arch code. Signed-off-by: Rob Herring <robh@kernel.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: linux-mips@linux-mips.org Tested-by: Grant Likely <grant.likely@linaro.org>
* MIPS: Panic messages should not end in \n.Ralf Baechle2013-10-291-2/+2
| | | | | | | Panic() is going to add a \n itself and it's annoying if a panic message rolls of the screen on a device with no scrollback. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: cavium-octeon: fix I/O space setup on non-PCI systemsAaro Koskinen2013-08-261-0/+28
| | | | | | | | | | | | | | | | | | | Fix I/O space setup, so that on non-PCI systems using inb()/outb() won't crash the system. Some drivers may try to probe I/O space and for that purpose we can just allocate some normal memory initially. Drivers trying to reserve a region will fail early as we set the size to 0. If a real I/O space is present, the PCI/PCIe support code will re-adjust the values accordingly. Tested with EdgeRouter Lite by enabling CONFIG_SERIO_I8042 that caused the originally reported crash. Reported-by: Faidon Liambotis <paravoid@debian.org> Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Acked-by: David Daney <david.daney@cavium.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5626/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* Merge branch '3.10-fixes' into mips-for-linux-nextRalf Baechle2013-07-121-2/+3
|\ | | | | | | | | This that should have been fixed but weren't, way to much, intrusive and late.
| * MIPS: Octeon: Don't clobber bootloader data structures.David Daney2013-06-211-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit abe77f90dc (MIPS: Octeon: Add kexec and kdump support) added a bootmem region for the kernel image itself. The problem is that this is rounded up to a 0x100000 boundary, which is memory that may not be owned by the kernel. Depending on the kernel's configuration based size, this 'extra' memory may contain data passed from the bootloader to the kernel itself, which if clobbered makes the kernel crash in various ways. The fix: Quit rounding the size up, so that we only use memory assigned to the kernel. Signed-off-by: David Daney <david.daney@cavium.com> Cc: <stable@vger.kernel.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5449/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * MIPS: Oceton: Fix build error.Ralf Baechle2013-06-181-1/+2
| | | | | | | | | | | | | | | | | | | | | | If CONFIG_CAVIUM_OCTEON_LOCK_L2_TLB, CONFIG_CAVIUM_OCTEON_LOCK_L2_EXCEPTION, CONFIG_CAVIUM_OCTEON_LOCK_L2_LOW_LEVEL_INTERRUPT and CONFIG_CAVIUM_OCTEON_LOCK_L2_INTERRUPT are all undefined: arch/mips/cavium-octeon/setup.c: In function ‘prom_init’: arch/mips/cavium-octeon/setup.c:715:12: error: unused variable ‘ebase’ [-Werror=unused-variable] Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* | MIPS: Octeon: Remove vestiges of CONFIG_CAVIUM_DECODE_RSLDavid Daney2013-06-101-27/+0
|/ | | | | | | | | | This config option doesn't exist any more, remove the leftover code for it too. Signed-off-by: David Daney <david.daney@cavium.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5302/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: OCTEON: Improve _machine_halt implementation.David Daney2013-06-061-6/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As noted by Wladislav Wiebe: $ halt .. Sent SIGKILL to all processes Requesting system halt [66.729373] System halted. [66.733244] [66.734761] ===================================== [66.739473] [ BUG: lock held at task exit time! ] [66.744188] 3.8.7-0-sampleversion-fct #49 Tainted: G O [66.750202] ------------------------------------- [66.754913] init/21479 is exiting with locks still held! [66.760234] 1 lock held by init/21479: [66.763990] #0: (reboot_mutex){+.+...}, at: [<ffffffff801776c8>] SyS_reboot+0xe0/0x218 [66.772165] [66.772165] stack backtrace: [66.776532] Call Trace: [66.778992] [<ffffffff805780a8>] dump_stack+0x8/0x34 [66.783972] [<ffffffff801618b0>] do_exit+0x610/0xa70 [66.788948] [<ffffffff801777a8>] SyS_reboot+0x1c0/0x218 [66.794186] [<ffffffff8013d6a4>] handle_sys64+0x44/0x64 This is an alternative fix to the one sent by Wladislav. We kill the watchdog for each CPU and then spin in WAIT with interrupts disabled. This is the lowest power mode for the OCTEON. If we were to spin with interrupts enabled, we would get a continual stream of warning messages and backtraces from the lockup detector, so I chose to disable interrupts. Signed-off-by: David Daney <david.daney@cavium.com> Cc: Maxim Uvarov <muvarov@gmail.com> Cc: Wladislav Wiebe <wladislav.kw@gmail.com> Cc: linux-mips@linux-mips.org Cc: David Daney <david.daney@cavium.com> Patchwork: https://patchwork.linux-mips.org/patch/5324/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Fix build error cavium-octeon without CONFIG_SMPEunBong Song2013-04-051-1/+4
| | | | | | | Singed-off-by: EunBong Song <eunb.song@samsung.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Whitespace cleanup.Ralf Baechle2013-02-011-4/+4
| | | | | | | | Having received another series of whitespace patches I decided to do this once and for all rather than dealing with this kind of patches trickling in forever. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS/EDAC: Improve OCTEON EDAC support.David Daney2012-12-131-4/+26
| | | | | | | | | Some initialization errors are reported with the existing OCTEON EDAC support patch. Also some parts have more than one memory controller. Fix the errors and add multiple controllers if present. Signed-off-by: David Daney <david.daney@cavium.com>
* MIPS: Octeon: Add kexec and kdump supportRalf Baechle2012-12-131-7/+305
| | | | | | | | | | | | [ralf@linux-mips.org: Original patch by Maxim Uvarov <muvarov@gmail.com> with plenty of further shining, polishing, debugging and testing by me.] Signed-off-by: Maxim Uvarov <muvarov@gmail.com> Cc: linux-mips@linux-mips.org Cc: kexec@lists.infradead.org Cc: horms@verge.net.au Patchwork: https://patchwork.linux-mips.org/patch/1026/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Octeon: Simplify code by assuming CONFIG_64BIT is always set.Ralf Baechle2012-12-121-6/+0
| | | | | | No 32-bit kernels supported on Octeon. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Octeon: Remove use of CONFIG_64BIT_PHYS_ADDR.Ralf Baechle2012-12-121-1/+1
| | | | | | | Only supporting 64-bit kernels there is no point in depending on this symbol. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Octeon: Remove highmem code.Ralf Baechle2012-12-121-4/+0
| | | | | | | On Cavium hardware only 64-bit kernels are supported so CONFIG_HIGHMEM is never set. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Cavium: Add EDAC support.Ralf Baechle2012-12-121-1/+29
| | | | | | | | | | | | | | | | | | Drivers for EDAC on Cavium. Supported subsystems are: o CPU primary caches. These are parity protected only, so only error reporting. o Second level cache - ECC protected, provides SECDED. o Memory: ECC / SECDEC if used with suitable DRAM modules. The driver will will only initialize if ECC is enabled on a system so is safe to run on non-ECC memory. o PCI: Parity error reporting Since it is very hard to test this sort of code the implementation is very conservative and uses polling where possible for now. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Reviewed-by: Borislav Petkov <borislav.petkov@amd.com>
* MIPS: Octeon: Add octeon_io_clk_delay() function.David Daney2012-08-311-1/+2
| | | | | | | Also cleanup and fix octeon_init_cvmcount() Signed-off-by: David Daney <ddaney@caviumnetworks.com> Acked-by: David S. Miller <davem@davemloft.net>
* MIPS: Octeon: Initialize and fixup device tree.David Daney2012-07-231-0/+45
| | | | | | | | | | | | | | | If a compiled in device tree template is used, trim out unwanted parts based on legacy platform probing. Signed-off-by: David Daney <david.daney@cavium.com> Cc: linux-mips@linux-mips.org Cc: devicetree-discuss@lists.ozlabs.org Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Rob Herring <rob.herring@calxeda.com> Cc: linux-kernel@vger.kernel.org Cc: David Daney <david.daney@cavium.com> Patchwork: https://patchwork.linux-mips.org/patch/3935/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Fix several implicit uses of export.h/module.hPaul Gortmaker2012-05-151-0/+1
| | | | | | | | | | | | | | | | | | | | | | These will show up as a build failure once we clean up a misuse of module.h in the mips termios header. Uses export.h: (EXPORT_SYMBOL) arch/mips/cavium-octeon/setup.c arch/mips/pmc-sierra/yosemite/setup.c arch/mips/rb532/devices.c arch/mips/sni/setup.c Uses module.h: (symbol_get/put) arch/mips/alchemy/devboards/db1200.c Uses module.h: (print_modules) arch/mips/kernel/traps.c Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/3448/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* Disintegrate asm/system.h for MIPSDavid Howells2012-03-281-1/+0
| | | | | | | | Disintegrate asm/system.h for MIPS. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Ralf Baechle <ralf@linux-mips.org> cc: linux-mips@linux-mips.org
* Merge branch 'next/generic' into mips-for-linux-nextRalf Baechle2012-01-111-8/+0
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| * MIPS: Handle initmem in systems with kernel not in add_memory_region() memDavid Daney2011-12-071-8/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch addresses a couple of related problems: 1) The kernel may reside in physical memory outside of the ranges set by plat_mem_setup(). If this is the case, init mem cannot be reused as it resides outside of the range of pages that the kernel memory allocators control. 2) initrd images might be loaded in physical memory outside of the ranges set by plat_mem_setup(). The memory likewise cannot be reused. The patch doesn't handle this specific case, but the infrastructure is useful for future patches that do. The crux of the problem is that there are memory regions that need be memory_present(), but that cannot be free_bootmem() at the time of arch_mem_init(). We create a new type of memory (BOOT_MEM_INIT_RAM) for use with add_memory_region(). Then arch_mem_init() adds the init mem with this type if the init mem is not already covered by existing ranges. When memory is being freed into the bootmem allocator, we skip the BOOT_MEM_INIT_RAM ranges so they are not clobbered, but we do signal them as memory_present(). This way when they are later freed, the necessary memory manager structures have initialized and the Sparse allocater is prevented from crashing. The Octeon specific code that handled this case is removed, because the new general purpose code handles the case. Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/1988/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* | MIPS: Fix up inconsistency in panic() string argument.Ralf Baechle2011-12-071-3/+3
|/ | | | | | | | Panic() invokes printk() to add a \n internally, so panic arguments should not themselves end in \n. Panic invocations in arch/mips and elsewhere are inconsistently sometimes terminating in \n, sometimes not. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* Octeon: Fix interrupt irq settings for performance counters.Chandrakala Chavva2011-05-191-7/+0
| | | | | | | | | | | | Octeon uses different interrupt irq for timer and performance counters. Set CvmCtl[IPPCI] to correct irq value very early. Signed-off-by: Chandrakala Chavva <cchavva@caviumnetworks.com> Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org Cc: Chandrakala Chavva <cchavva@caviumnetworks.com> Patchwork: https://patchwork.linux-mips.org/patch/2085/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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