- 24 Nov, 2014 40 commits
-
-
Andrew Bresticker authored
Bump up the rating of the GIC timer so that it gets prioritized over the CP0 timer. Signed-off-by:
Andrew Bresticker <abrestic@chromium.org> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Paul Burton <paul.burton@imgtec.com> Cc: Qais Yousef <qais.yousef@imgtec.com> Cc: John Crispin <blogic@openwrt.org> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/8141/Signed-off-by:
Ralf Baechle <ralf@linux-mips.org>
-
Andrew Bresticker authored
Use clockevents_config_and_register to setup the clock_event_device based on frequency and min/max ticks instead of doing it ourselves. Signed-off-by:
-
Andrew Bresticker authored
Instead of requiring an explicit call to gic_clockevent_init in the SMP startup path, use CPU notifiers to register and enable the GIC timer on CPU startup. Signed-off-by:
-
Andrew Bresticker authored
Since the GIC timer IRQ is a percpu IRQ, we can use percpu_dev_id to pass the IRQ handler the correct clock_event_device. Signed-off-by:
-
Andrew Bresticker authored
Remove gic_event_handler since it is completely unnecessary. Signed-off-by:
-
Andrew Bresticker authored
There's no reason for gic_frequency to be global any more and it certainly doesn't belong in the GIC irqchip driver, so move it to the GIC clocksource driver. Signed-off-by:
-
Andrew Bresticker authored
There are a number of variables and functions which are unnecessarily global. Mark them static. Signed-off-by:
-
Andrew Bresticker authored
Combine the GIC clocksource driver with the GIC clockevent driver from arch/mips/kernel/cevt-gic.c and remove the clockevent driver's separate Kconfig symbol. Signed-off-by:
-
Andrew Bresticker authored
Move the GIC clocksource driver to drivers/clocksource/mips-gic-timer.c. Signed-off-by:
-
Andrew Bresticker authored
Use the GIC_SH_WEDGE_{SET,CLR} macros provided by mips-gic.h. Signed-off-by: -
Andrew Bresticker authored
There's no reason for the pending and masked interrupt bitmasks to be global. Just declare them on the stack in gic_get_int() since they only consume (256*2)/8 = 64 bytes. Signed-off-by:
-
Andrew Bresticker authored
Sort the #includes and remove those which are unnecessary. Signed-off-by:
-
Andrew Bresticker authored
Remove duplicate #defines and unnecessary #includes, fix parenthesization, and re-order register definitions in ascending order. Signed-off-by:
-
Kevin Cernekee authored
This hardware shows up on the newly-supported BCM3384 cable chip, as well as several old BCM63xx DSL chips. Signed-off-by:
Kevin Cernekee <cernekee@gmail.com> Cc: f.fainelli@gmail.com Cc: mbizon@freebox.fr Cc: jogo@openwrt.org Cc: jfraser@broadcom.com Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/8172/Signed-off-by:
-
Kevin Cernekee authored
Add myself as a maintainer for the new BCM3384 board support code. Signed-off-by:
-
Kevin Cernekee authored
This supports SMP Linux running on the BCM3384 Zephyr (BMIPS5000) application processor, with fully functional UART and USB 1.1/2.0. Device Tree is used to configure the following items: - All peripherals - Early console base address - SMP or UP mode - MIPS counter frequency - Memory size / regions - DMA offset - Kernel command line The DT-enabled bootloader and build instructions are posted at https://github.com/Broadcom/aeolusSigned-off-by:
-
Kevin Cernekee authored
We have a bunch of platforms using "mti,cpu-interrupt-controller" but the "mti" prefix isn't documented. Fix this. Signed-off-by:
-
Kevin Cernekee authored
This covers the new "brcm,*" devices added in the upcoming bcm3384 commit. Signed-off-by:
-
Kevin Cernekee authored
A couple of platforms register two buses and call of_platform_populate(). Move this into a common function to reduce duplication. Signed-off-by:
-
Kevin Cernekee authored
This is a dual core (quad thread) BMIPS5000. It needs a little extra code to boot the second core (CPU2/CPU3), but for now we can treat it the same as a single core BMIPS5000. Signed-off-by:
-
Kevin Cernekee authored
BMIPS435x and BMIPS438x have a single shared L1 D$ and load/store unit, so it isn't necessary to raise IPIs to keep both CPUs coherent. BMIPS5000 has VIPT L1 caches that handle aliases in hardware, and its I$ fills from D$. But a special sequence with 2 SYNCs and 32 NOPs is needed to ensure coherency. Signed-off-by:
-
Kevin Cernekee authored
On some chips like bcm3384, "other stuff" gets wired up to CPU1's IE_IRQ1 input, generating spurious IRQs. In this case we want the platform code to be able to mask it off. Signed-off-by:
-
Kevin Cernekee authored
BMIPS438x has a 64-byte D$ line size and BMIPS5000 has a 128-byte L2 line size. If L1_CACHE_SHIFT is undersized, DMA buffers will not be cacheline-aligned and terrible things will happen. Signed-off-by:
-
Kevin Cernekee authored
CONFIG_MIPS_CPU_SCACHE determines whether to build sc-mips.c. However, it is currently hardwired to use an L1_SHIFT of 6 (64 bytes). Move the L1_SHIFT selection into the CPU or SoC section so that other SoCs can select different values. Signed-off-by:
-
Kevin Cernekee authored
The secondary CPU's reset vector needs to be set to KSEG1 for a cold boot (release from reset), or KSEG0 for a warm restart. On a cold boot KSEG0 may be unavailable (BMIPS4380), and on a warm restart KSEG1 may be unavailable (XKS01 mode on 4380 or 5000). Signed-off-by:
-
Jon Fraser authored
CPU interrupts need to be disabled on a cpu being taken down. When a cpu is hot-plugged out of the system the following sequence occurs. On the CPU where the hotplug sequence was initiated: cpu_down _cpu_down { __cpu_notify(CPU_DOWN_PREPARE __stop_machine(take_cpu_down wait for cpu to run disable code. __cpu_die } On the CPU being disabled: take_cpu_down __cpu_disable { mp_ops->cpu_disable bmips_cpu_disable clear_c0_status(IE_IRQ5) (added) cpu_notify(CPU_DYING... } Before the cpu_notifier is called with CPU_DYING, all interrupts on the dying cpu must be disabled. This guarantees that before tick_notify is called with the CPU_DYING event and sets the clock device pointer to NULL, there can not be any more clock interrupts. When this wasn't done, an unfortunately-timed timer interrupt sometimes caused hangs immediately prior to system suspend: Debug PM is not enabled. To enable partial suspend, rebuild kernel with CONFIG_PM_DEBUG Pass 1 out of 1,PM: Syncing filesystems ... mode=none, tp1=done. 1, flags=5, cycle_tp=, sleep= Freezing user space processes ... (elapsed 0.01 seconds) done. Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done. PM: suspend of devices complete after 54.199 msecs PM: late suspend of devices complete after 0.172 msecs Disabling non-boot CPUs ... SMP: CPU1 is offline INFO: rcu_sched detected stalls on CPUs/tasks: { 3} (detected by 0, t=62537 jiffies) Call Trace: [<804baa78>] dump_stack+0x8/0x34 [<8008a2d8>] __rcu_pending+0x4b8/0x55c [<8008adf4>] rcu_check_callbacks+0x78/0x180 [<80037830>] update_process_times+0x40/0x6c [<80072fe4>] tick_sched_timer+0x74/0xe4 [<80050180>] __run_hrtimer.clone.30+0x64/0x140 [<80051150>] hrtimer_interrupt+0x19c/0x4bc [<8000cdb8>] c0_compare_interrupt+0x50/0x88 [<80081b18>] handle_irq_event_percpu+0x5c/0x2f4 [<80086490>] handle_percpu_irq+0x8c/0xc0 [<800811b4>] generic_handle_irq+0x34/0x54 [<800067dc>] do_IRQ+0x18/0x2c [<8000375c>] plat_irq_dispatch+0xd0/0x128 [<80004a04>] ret_from_irq+0x0/0x4 [<80004c40>] r4k_wait+0x20/0x40 [<80006b6c>] cpu_idle+0x98/0xf0 [<805d3988>] start_kernel+0x424/0x440 Signed-off-by:Jon Fraser <jfraser@broadcom.com> Signed-off-by:
-
Jon Fraser authored
BMIPS3300 processors do not have the hardware to support SMP, but with a small tweak, the SMP ebase relocation code allows BMIPS3300-based platforms to reuse the S2/S3 power management code from BMIPS4380-based chips. Normally this is as simple as adding one line to prom_init(): board_ebase_setup = &bmips_ebase_setup; Signed-off-by: -
Kevin Cernekee authored
This will need to be called from a few different places, and the logic is starting to get a bit hairy (with the need for IPIs, CPU bug workarounds, and hazards). Signed-off-by:
-
Kevin Cernekee authored
On some older BMIPS5200 (dual core / quad thread) platforms, the PROM code set up CPU2/CPU3 so they would be started through an NMI instead of through the ACTION register. But this was incompatible with some power management features that were later added, so the scheme was changed so that Linux is fully responsible for booting CPU2/CPU3. Signed-off-by:
-
Kelvin Cheung authored
- Add clock lookups for APB devices. - Update clock relationship to make it more exact and clear. _____ _______________________| | OSC ___/ | MUX |___ XXX CLK \___ PLL ___ XXX DIV ___| | |_____| Signed-off-by:Kelvin Cheung <keguang.zhang@gmail.com> Cc: linux-kernel@vger.kernel.org Cc: mturquette@linaro.org Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/8026/Signed-off-by:
-
Kelvin Cheung authored
This patch add a clockevent/clocksource using PWM Timer for Loongson1B, which is based on earlier work by Tang, Haifeng. Signed-off-by:
-
Kelvin Cheung authored
- Fix hanging ethernet issue of LS1B v2.0 by adding pbl field in plat data. (It seems that the MAC controller of LS1B v2.0 can only accept pbl=1) - Add GMAC1 support and setup MUX in terms of PHY mode. - Add CPUFreq support. - Add MUX Register Definitions. - Add PWM Register Definitions. - Update clock register bitfields according to the latest spec. - Update clock related stuff. Signed-off-by:
-
Kelvin Cheung authored
- Determine serial port for early printk according to kernel command line. - Move to 8250/16550 serial early printk driver. Signed-off-by:
-
Kelvin Cheung authored
- Correct the header file of watchdog registers - Use ioremap_nocache() to access watchdog registers instead Signed-off-by:
-
Ralf Baechle authored
Signed-off-by: -
Rafał Miłecki authored
1) Move private defines to the .c file 2) Move SPROM helper to the sprom.c 3) Drop unused code 4) Rename magic to the NVRAM_MAGIC 5) Add const to the char pointer we never modify Signed-off-by:
Rafał Miłecki <zajec5@gmail.com> Acked-by:
Hauke Mehrtens <hauke@hauke-m.de> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/8289/Signed-off-by:
-
Rafał Miłecki authored
NVRAM can be read using magic memory offset, but after all it's just a flash partition. On platforms where NVRAM isn't needed early we can get it using mtd subsystem. Signed-off-by:
-
Paul Burton authored
The hybrid FPR scheme exists to allow for compatibility between existing FP32 code and newly compiled FP64A code. Such code should hopefully be rare in the real world, and for the moment is difficult to come across. All code except that built for the FP64 ABI can correctly execute using the hybrid FPR scheme, so debugging the hybrid FPR implementation can be eased by forcing all such code to use it. This is undesirable in general due to the trap & emulate overhead of the hybrid FPR implementation, but is a very useful option to have for debugging. Signed-off-by:
Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: linux-fsdevel@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/7680/Signed-off-by:
-
Paul Burton authored
This patch reads the .MIPS.abiflags section when it is present, and sets the FP mode of the task accordingly. Any loaded ELF files which do not contain a .MIPS.abiflags section will continue to observe the previous behaviour, that is FR=1 if EF_MIPS_FP64 is set else FR=0. Signed-off-by:
-
Paul Burton authored
New toolchains will generate a .MIPS.abiflags section, referenced by a new PT_MIPS_ABIFLAGS program header. This section will provide information about the requirements of the ELF, including the ISA level the code is built for, the ASEs it requires, the size of various registers and its expectations of the floating point mode. This patch introduces a definition of the structure of this section and the program header, for use in a subsequent patch. Signed-off-by:
-
