On 12 May 2015 at 21:03, Guillaume Tucker <[email protected]> wrote:
> > Then i run startx, i can see the desktop on the monitor. > > But i found that the X process doesn't load any EGL and GLES libs by > > seeing the info of /proc/X process ID/task/*/smaps file. > > Most X11 desktop environments use OpenGL, not OpenGL ES. Then like most > embedded GPUs, Mali-450 only supports OpenGL ES so the X11 desktop is > not hardware-accelerated. > Do you mean it makes no sense that to enable a OpenGL ES mali GPU on X11 desktop environments, such as debain? > > [ 23.793] (II) GLX: no usable GL providers found for screen 0 > > This means that although X11 found a valid armsoc driver and is enabled > to run OpenGL ES apps it won't run desktop-like OpenGL apps or desktop > environments that need OpenGL. > > If you run an accelerated OpenGL ES X11 app such as es2gears then it > should work and use the Mali driver. I guess this is what es2_info is > trying to do except that it looks like something went wrong in your > driver build or configuration. That would take more investigation to > find out the actual cause; might be related to how GPU registers are > being used in the kernel, or how buffers are being used and shared with > user-space. > > Cheers, > Guillaume > > On 12/05/15 13:30, Xinliang Liu wrote: > >> Hello, >> Recently, i am working on enabling mali 450 gpu at debian xorg X windows >> for hikey board which is one of 96boards <https://www.96boards.org/>. >> >> >> I first implement xf86-video-armsoc(ver1.1.0) video driver, compile and >> cp armsoc_drv.so to directory "/usr/lib/xorg/modules/drivers". >> And then compile arm mali r5p0 DDK and cp egl and gles libs(libEGL.so >> libEGL.so.1 libEGL.so.1.4 libGLESv1_CM.so libGLESv1_CM.so.1 >> libGLESv1_CM.so.1.1 libGLESv2.so libGLESv2.so.2 libGLESv2.so.2.0 >> libMali.so) to directory "/usr/lib/aarch64-linux-gnu/" or "/usr/lib". >> >> my xorg.conf is show as bellow: >> ----------------------------xorg.conf start-------------------------- >> cat /etc/X11/xorg.conf >> Section "Device" >> Identifier "Card0" >> Driver "armsoc" >> EndSection >> >> Section "Screen" >> Identifier "Screen0" >> Device "Card0" >> DefaultDepth 24 >> EndSection >> ----------------------------xorg.conf end-------------------------- >> Then i run startx, i can see the desktop on the monitor. >> But i found that the X process doesn't load any EGL and GLES libs by >> seeing the info of /proc/X process ID/task/*/smaps file. >> And even when i run #es2_info , i get bellow error: >> ----------------------------es2_info log start-------------------------- >> # es2_info >> [ 1010.459771] es2_info[1858]: unhandled level 3 translation fault (7) >> at 0x7f9dbe66b0, esr 0x92000047 >> [ 1010.468920] pgd = ffffffc03209b000 >> [ 1010.472324] [7f9dbe66b0] *pgd=000000003aad5003, >> *pud=000000003aad5003, *pmd=00000000384ae003, *pte=0000000000000000 >> [ 1010.482838] >> [ 1010.484335] CPU: 2 PID: 1858 Comm: es2_info Tainted: G W >> 3.18.0-linaro-hikey #37 >> [ 1010.492802] task: ffffffc032b28780 ti: ffffffc0329c0000 task.ti: >> ffffffc0329c0000 >> [ 1010.500322] PC is at 0x7f9dbfd744 >> [ 1010.503639] LR is at 0x7f9dbecbb0 >> [ 1010.507000] pc : [<0000007f9dbfd744>] lr : [<0000007f9dbecbb0>] >> pstate: 20000000 >> [ 1010.514402] sp : 0000007fffe87800 >> [ 1010.517764] x29: 0000007fffe87930 x28: 0000007f9dc0f570 >> [ 1010.523098] x27: 0000007fffe87bb0 x26: 0000007fffe87830 >> [ 1010.528473] x25: 0000000000000001 x24: 0000007fffe87b70 >> [ 1010.533806] x23: 0000000000000000 x22: 0000000000000002 >> [ 1010.539179] x21: 0000000000000006 x20: 0000007f9dc12000 >> [ 1010.544511] x19: 00000000002c9978 x18: 0000000000000000 >> [ 1010.549886] x17: 0000007f9dbfa8d0 x16: 0000007f9dc13000 >> [ 1010.555259] x15: 0000007f9dbfa338 x14: 0000007f9dbfa410 >> [ 1010.560594] x13: 00000000002ca6af x12: 0000000000007978 >> [ 1010.565965] x11: 0000007f9d91d000 x10: 0000007fffe87860 >> [ 1010.571299] x9 : 0000000000000004 x8 : 0000007f9dbe66b0 >> [ 1010.576672] x7 : 0000000000000000 x6 : 000000000000003f >> [ 1010.582006] x5 : 0000000000000040 x4 : 0000000000000010 >> [ 1010.587382] x3 : 00000000000002b8 x2 : 00000000000002b8 >> [ 1010.592716] x1 : 0000000000000000 x0 : 0000007f9dbe66b0 >> [ 1010.598088] >> Bus error >> ---------------------------es2_info log end-------------------------- >> >> >> What's wrong? >> Am I missing something on integrating xf86-video-armsoc? >> And why X doesn't load any EGL and GLES so libs? >> I paste the Xorg.0.log at the end. >> Please tell me if you know what's going wrong, thanks. >> >> Best regards, >> -Xinliang Liu >> >> >> >> ----------------------------Xorg.0.log start-------------------------- >> cat /var/log/Xorg.0.log >> [ 23.704] >> X.Org X Server 1.16.4 >> Release Date: 2014-12-20 >> [ 23.704] X Protocol Version 11, Revision 0 >> [ 23.704] Build Operating System: Linux 3.16.0-4-arm64 aarch64 Debian >> [ 23.704] Current Operating System: Linux linaro-alip >> 3.18.0-linaro-hikey #37 SMP PREEMPT Tue May 12 19:01:21 HKT 2015 aarch64 >> [ 23.704] Kernel command line: iommu_ddr_size=0x40000000 console=tty0 >> console=ttyAMA0,115200n8 loglevel=7 root=/dev/mmcblk0p7 rootwait rw >> mem=908M boardid=0x48696220,0x00000011,0x0000002b >> thermal_trim=0xb6aaaa09 pd_charge=0 boottype=defaultnormal >> enter_recovery=0 androidboot.swtype=normal fastboot_version= himn >> [ 23.704] Build Date: 11 February 2015 01:19:23AM >> [ 23.704] xorg-server 2:1.16.4-1 (http://www.debian.org/support) >> [ 23.704] Current version of pixman: 0.32.6 >> [ 23.704] Before reporting problems, check http://wiki.x.org >> to make sure that you have the latest version. >> [ 23.704] Markers: (--) probed, (**) from config file, (==) default >> setting, >> (++) from command line, (!!) notice, (II) informational, >> (WW) warning, (EE) error, (NI) not implemented, (??) unknown. >> [ 23.705] (==) Log file: "/var/log/Xorg.0.log", Time: Tue May 12 >> 09:11:51 2015 >> [ 23.705] (==) Using config file: "/etc/X11/xorg.conf" >> [ 23.705] (==) Using system config directory >> "/usr/share/X11/xorg.conf.d" >> [ 23.706] (==) No Layout section. Using the first Screen section. >> [ 23.706] (**) |-->Screen "Screen0" (0) >> [ 23.706] (**) | |-->Monitor "<default monitor>" >> [ 23.707] (**) | |-->Device "Card0" >> [ 23.707] (==) No monitor specified for screen "Screen0". >> Using a default monitor configuration. >> [ 23.707] (==) Automatically adding devices >> [ 23.707] (==) Automatically enabling devices >> [ 23.707] (==) Automatically adding GPU devices >> [ 23.707] (WW) The directory "/usr/share/fonts/X11/misc" does not >> exist. >> [ 23.707] Entry deleted from font path. >> [ 23.707] (WW) The directory "/usr/share/fonts/X11/cyrillic" does not >> exist. >> [ 23.707] Entry deleted from font path. >> [ 23.707] (WW) The directory "/usr/share/fonts/X11/100dpi/" does not >> exist. >> [ 23.707] Entry deleted from font path. >> [ 23.707] (WW) The directory "/usr/share/fonts/X11/75dpi/" does not >> exist. >> [ 23.707] Entry deleted from font path. >> [ 23.707] (WW) The directory "/usr/share/fonts/X11/Type1" does not >> exist. >> [ 23.707] Entry deleted from font path. >> [ 23.707] (WW) The directory "/usr/share/fonts/X11/100dpi" does not >> exist. >> [ 23.707] Entry deleted from font path. >> [ 23.707] (WW) The directory "/usr/share/fonts/X11/75dpi" does not >> exist. >> [ 23.707] Entry deleted from font path. >> [ 23.707] (==) FontPath set to: >> built-ins >> [ 23.707] (==) ModulePath set to "/usr/lib/xorg/modules" >> [ 23.707] (II) The server relies on udev to provide the list of input >> devices. >> If no devices become available, reconfigure udev or disable >> AutoAddDevices. >> [ 23.707] (II) Loader magic: 0x7fa49a7ce8 >> [ 23.707] (II) Module ABI versions: >> [ 23.707] X.Org ANSI C Emulation: 0.4 >> [ 23.707] X.Org Video Driver: 18.0 >> [ 23.708] X.Org XInput driver : 21.0 >> [ 23.708] X.Org Server Extension : 8.0 >> [ 23.708] (II) xfree86: Adding drm device (/dev/dri/card0) >> [ 23.709] (II) no primary bus or device found >> [ 23.709] falling back to >> /sys/devices/smb/smb:display-subsystem/drm/card0 >> [ 23.709] (II) LoadModule: "glx" >> [ 23.710] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so >> [ 23.717] (II) Module glx: vendor="X.Org Foundation" >> [ 23.717] compiled for 1.16.4, module version = 1.0.0 >> [ 23.717] ABI class: X.Org Server Extension, version 8.0 >> [ 23.717] (==) AIGLX enabled >> [ 23.718] (II) LoadModule: "armsoc" >> [ 23.718] (II) Loading /usr/lib/xorg/modules/drivers/armsoc_drv.so >> [ 23.718] (II) Module armsoc: vendor="X.Org Foundation" >> [ 23.718] compiled for 1.16.4, module version = 1.1.0 >> [ 23.718] Module class: X.Org Video Driver >> [ 23.718] ABI class: X.Org Video Driver, version 18.0 >> [ 23.718] (II) ARMSOC: Driver for ARM Mali compatible chipsets >> [ 23.718] (++) using VT number 7 >> >> [ 23.719] (WW) Falling back to old probe method for armsoc >> [ 23.719] (II) No BusID or DriverName specified - opening >> /dev/dri/card0 >> [ 23.719] (II) Got BusID platform:smb:display-subsystem:00 >> [ 23.719] (II) Opened DRM >> [ 23.719] (II) DeviceName is [/dev/dri/card0] >> [ 23.719] (II) bus_id is [platform:smb:display-subsystem:00] >> [ 23.719] (II) DriverName is [hisi] >> [ 23.719] (II) version is [1.0.0] >> [ 23.719] (II) Screen:0, CRTC:-1 >> [ 23.720] (II) ARMSOC(0): Creating default Display subsection in >> Screen section >> "Screen0" for depth/fbbpp 24/32 >> [ 23.720] (**) ARMSOC(0): Depth 24, (--) framebuffer bpp 32 >> [ 23.720] (==) ARMSOC(0): RGB weight 888 >> [ 23.720] (==) ARMSOC(0): Using gamma correction (1.0, 1.0, 1.0) >> [ 23.720] (==) ARMSOC(0): Default visual is TrueColor >> [ 23.720] (II) No BusID or DriverName specified - opening >> /dev/dri/card0 >> [ 23.720] (II) Got BusID platform:smb:display-subsystem:00 >> [ 23.720] (II) Opened DRM >> [ 23.720] (II) DeviceName is [/dev/dri/card0] >> [ 23.720] (II) bus_id is [platform:smb:display-subsystem:00] >> [ 23.720] (II) DriverName is [hisi] >> [ 23.720] (II) version is [1.0.0] >> [ 23.720] (II) ARMSOC(0): Chipset: Mali >> [ 23.720] (II) ARMSOC(0): Buffer Flipping is Enabled >> [ 23.720] (II) ARMSOC(0): Setting the video modes ... >> [ 23.721] (II) ARMSOC(0): Adding all CRTCs >> [ 23.721] (II) ARMSOC(0): Got CRTC: 0 (id: 6) >> [ 23.725] (II) ARMSOC(0): Output HDMI-1 has no monitor section >> [ 23.730] (II) ARMSOC(0): Printing probed modes for output HDMI-1 >> [ 23.730] (II) ARMSOC(0): Modeline "1280x720"x60.6 75.00 1280 1500 >> 1540 1650 720 740 745 750 -hsync -vsync (45.5 kHz e) >> [ 23.730] (II) ARMSOC(0): Output HDMI-1 connected >> [ 23.730] (II) ARMSOC(0): Using sloppy heuristic for initial modes >> [ 23.730] (II) ARMSOC(0): Output HDMI-1 using initial mode 1280x720 >> [ 23.730] (II) ARMSOC(0): Got KMS resources >> [ 23.730] (==) ARMSOC(0): DPI set to (96, 96) >> [ 23.730] (II) Loading sub module "dri2" >> [ 23.730] (II) LoadModule: "dri2" >> [ 23.730] (II) Module "dri2" already built-in >> [ 23.730] (II) Loading sub module "exa" >> [ 23.730] (II) LoadModule: "exa" >> [ 23.731] (II) Loading /usr/lib/xorg/modules/libexa.so >> [ 23.731] (II) Module exa: vendor="X.Org Foundation" >> [ 23.731] compiled for 1.16.4, module version = 2.6.0 >> [ 23.731] ABI class: X.Org Video Driver, version 18.0 >> [ 23.731] (II) Loading sub module "fb" >> [ 23.731] (II) LoadModule: "fb" >> [ 23.732] (II) Loading /usr/lib/xorg/modules/libfb.so >> [ 23.732] (II) Module fb: vendor="X.Org Foundation" >> [ 23.732] compiled for 1.16.4, module version = 1.0.0 >> [ 23.732] ABI class: X.Org ANSI C Emulation, version 0.4 >> [ 23.732] (--) Depth 24 pixmap format is 32 bpp >> [ 23.734] (II) ARMSOC(0): Soft EXA mode >> [ 23.734] (II) EXA(0): Driver allocated offscreen pixmaps >> [ 23.735] (II) EXA(0): Driver registered support for the following >> operations: >> [ 23.735] (II) Solid >> [ 23.735] (II) Copy >> [ 23.735] (II) Composite (RENDER acceleration) >> [ 23.735] (II) ARMSOC(0): Setting swap chain size: 2 >> [ 23.735] (II) ARMSOC(0): [DRI2] Setup complete >> [ 23.735] (II) ARMSOC(0): [DRI2] DRI driver: armsoc >> [ 23.735] (==) ARMSOC(0): Backing store enabled >> [ 23.735] (==) ARMSOC(0): Silken mouse enabled >> [ 23.735] (II) ARMSOC(0): HW cursor init() >> [ 23.735] (II) ARMSOC(0): HW cursor initialized >> [ 23.763] (II) ARMSOC(0): RandR 1.2 enabled, ignore the following >> RandR disabled message. >> [ 23.764] (==) ARMSOC(0): DPMS enabled >> [ 23.764] (--) RandR disabled >> [ 23.790] (II) SELinux: Disabled on system >> [ 23.793] (EE) AIGLX error: dlopen of >> /usr/lib/aarch64-linux-gnu/dri/armsoc_dri.so failed >> (/usr/lib/aarch64-linux-gnu/dri/armsoc_dri.so: cannot open shared object >> file: No su) >> [ 23.793] (EE) AIGLX: reverting to software rendering >> [ 23.793] (EE) AIGLX error: dlopen of >> /usr/lib/aarch64-linux-gnu/dri/swrast_dri.so failed >> (/usr/lib/aarch64-linux-gnu/dri/swrast_dri.so: cannot open shared object >> file: No su) >> [ 23.793] (EE) GLX: could not load software renderer >> [ 23.793] (II) GLX: no usable GL providers found for screen 0 >> [ 23.793] (II) ARMSOC(0): Setting screen physical size to 338 x 190 >> [ 23.880] (II) config/udev: Adding input device USB OPTICAL MOUSE >> (/dev/input/event0) >> [ 23.880] (**) USB OPTICAL MOUSE : Applying InputClass "evdev pointer >> catchall" >> [ 23.880] (II) LoadModule: "evdev" >> [ 23.881] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so >> [ 23.882] (II) Module evdev: vendor="X.Org Foundation" >> [ 23.882] compiled for 1.16.0, module version = 2.9.0 >> [ 23.882] Module class: X.Org XInput Driver >> [ 23.882] ABI class: X.Org XInput driver, version 21.0 >> [ 23.882] (II) Using input driver 'evdev' for 'USB OPTICAL MOUSE ' >> [ 23.882] (**) USB OPTICAL MOUSE : always reports core events >> [ 23.882] (**) evdev: USB OPTICAL MOUSE : Device: "/dev/input/event0" >> [ 23.882] (--) evdev: USB OPTICAL MOUSE : Vendor 0x101 Product 0x7 >> [ 23.882] (--) evdev: USB OPTICAL MOUSE : Found 9 mouse buttons >> [ 23.883] (--) evdev: USB OPTICAL MOUSE : Found scroll wheel(s) >> [ 23.883] (--) evdev: USB OPTICAL MOUSE : Found relative axes >> [ 23.883] (--) evdev: USB OPTICAL MOUSE : Found x and y relative axes >> [ 23.883] (II) evdev: USB OPTICAL MOUSE : Configuring as mouse >> [ 23.883] (II) evdev: USB OPTICAL MOUSE : Adding scrollwheel support >> [ 23.883] (**) evdev: USB OPTICAL MOUSE : YAxisMapping: buttons 4 and 5 >> [ 23.883] (**) evdev: USB OPTICAL MOUSE : EmulateWheelButton: 4, >> EmulateWheelInertia: 10, EmulateWheelTimeout: 200 >> [ 23.883] (**) Option "config_info" >> >> "udev:/sys/devices/f72c0000.usb/usb1/1-1/1-1.1/1-1.1:1.0/0003:0101:0007.0001/input/input0/event0" >> [ 23.883] (II) XINPUT: Adding extended input device "USB OPTICAL >> MOUSE " (type: MOUSE, id 6) >> [ 23.883] (II) evdev: USB OPTICAL MOUSE : initialized for relative >> axes. >> [ 23.884] (**) USB OPTICAL MOUSE : (accel) keeping acceleration scheme >> 1 >> [ 23.884] (**) USB OPTICAL MOUSE : (accel) acceleration profile 0 >> [ 23.884] (**) USB OPTICAL MOUSE : (accel) acceleration factor: 2.000 >> [ 23.884] (**) USB OPTICAL MOUSE : (accel) acceleration threshold: 4 >> [ 23.885] (II) config/udev: Adding input device USB OPTICAL MOUSE >> (/dev/input/mouse0) >> [ 23.885] (II) No input driver specified, ignoring this device. >> [ 23.885] (II) This device may have been added with another device >> file. >> [ 23.886] (II) config/udev: Adding input device SIGMACHIP USB >> Keyboard (/dev/input/event1) >> [ 23.886] (**) SIGMACHIP USB Keyboard: Applying InputClass "evdev >> keyboard catchall" >> [ 23.886] (II) Using input driver 'evdev' for 'SIGMACHIP USB Keyboard' >> [ 23.886] (**) SIGMACHIP USB Keyboard: always reports core events >> [ 23.886] (**) evdev: SIGMACHIP USB Keyboard: Device: >> "/dev/input/event1" >> [ 23.886] (--) evdev: SIGMACHIP USB Keyboard: Vendor 0x1c4f Product 0x2 >> [ 23.886] (--) evdev: SIGMACHIP USB Keyboard: Found keys >> [ 23.886] (II) evdev: SIGMACHIP USB Keyboard: Configuring as keyboard >> [ 23.887] (**) Option "config_info" >> >> "udev:/sys/devices/f72c0000.usb/usb1/1-1/1-1.2/1-1.2:1.0/0003:1C4F:0002.0002/input/input1/event1" >> [ 23.887] (II) XINPUT: Adding extended input device "SIGMACHIP USB >> Keyboard" (type: KEYBOARD, id 7) >> [ 23.887] (**) Option "xkb_rules" "evdev" >> [ 23.887] (**) Option "xkb_model" "pc105" >> [ 23.887] (**) Option "xkb_layout" "us" >> [ 23.889] (II) config/udev: Adding input device SIGMACHIP USB >> Keyboard (/dev/input/event2) >> [ 23.889] (**) SIGMACHIP USB Keyboard: Applying InputClass "evdev >> keyboard catchall" >> [ 23.889] (II) Using input driver 'evdev' for 'SIGMACHIP USB Keyboard' >> [ 23.889] (**) SIGMACHIP USB Keyboard: always reports core events >> [ 23.889] (**) evdev: SIGMACHIP USB Keyboard: Device: >> "/dev/input/event2" >> [ 23.889] (--) evdev: SIGMACHIP USB Keyboard: Vendor 0x1c4f Product 0x2 >> [ 23.889] (--) evdev: SIGMACHIP USB Keyboard: Found 1 mouse buttons >> [ 23.889] (--) evdev: SIGMACHIP USB Keyboard: Found scroll wheel(s) >> [ 23.889] (--) evdev: SIGMACHIP USB Keyboard: Found relative axes >> [ 23.889] (II) evdev: SIGMACHIP USB Keyboard: Forcing relative x/y >> axes to exist. >> [ 23.889] (--) evdev: SIGMACHIP USB Keyboard: Found absolute axes >> [ 23.889] (II) evdev: SIGMACHIP USB Keyboard: Forcing absolute x/y >> axes to exist. >> [ 23.889] (--) evdev: SIGMACHIP USB Keyboard: Found keys >> [ 23.889] (II) evdev: SIGMACHIP USB Keyboard: Configuring as mouse >> [ 23.889] (II) evdev: SIGMACHIP USB Keyboard: Configuring as keyboard >> [ 23.889] (II) evdev: SIGMACHIP USB Keyboard: Adding scrollwheel >> support >> [ 23.889] (**) evdev: SIGMACHIP USB Keyboard: YAxisMapping: buttons 4 >> and 5 >> [ 23.889] (**) evdev: SIGMACHIP USB Keyboard: EmulateWheelButton: 4, >> EmulateWheelInertia: 10, EmulateWheelTimeout: 200 >> [ 23.890] (**) Option "config_info" >> >> "udev:/sys/devices/f72c0000.usb/usb1/1-1/1-1.2/1-1.2:1.1/0003:1C4F:0002.0003/input/input2/event2" >> [ 23.890] (II) XINPUT: Adding extended input device "SIGMACHIP USB >> Keyboard" (type: KEYBOARD, id 8) >> [ 23.890] (**) Option "xkb_rules" "evdev" >> [ 23.890] (**) Option "xkb_model" "pc105" >> [ 23.890] (**) Option "xkb_layout" "us" >> [ 23.890] (II) evdev: SIGMACHIP USB Keyboard: initialized for >> relative axes. >> [ 23.890] (WW) evdev: SIGMACHIP USB Keyboard: ignoring absolute axes. >> [ 23.891] (**) SIGMACHIP USB Keyboard: (accel) keeping acceleration >> scheme 1 >> [ 23.891] (**) SIGMACHIP USB Keyboard: (accel) acceleration profile 0 >> [ 23.891] (**) SIGMACHIP USB Keyboard: (accel) acceleration factor: >> 2.000 >> [ 23.891] (**) SIGMACHIP USB Keyboard: (accel) acceleration threshold: >> 4 >> [ 24.324] (II) evdev: SIGMACHIP USB Keyboard: Close >> [ 24.325] (II) UnloadModule: "evdev" >> [ 24.325] (II) evdev: SIGMACHIP USB Keyboard: Close >> [ 24.326] (II) UnloadModule: "evdev" >> [ 24.326] (II) evdev: USB OPTICAL MOUSE : Close >> [ 24.326] (II) UnloadModule: "evdev" >> [ 24.332] (EE) Server terminated successfully (0). Closing log file. >> ----------------------------Xorg.0.log end--------------------------- >> >> > -- IMPORTANT NOTICE: The contents of this email and any attachments are > confidential and may also be privileged. If you are not the intended > recipient, please notify the sender immediately and do not disclose the > contents to any other person, use it for any purpose, or store or copy the > information in any medium. Thank you. > > ARM Limited, Registered office 110 Fulbourn Road, Cambridge CB1 9NJ, > Registered in England & Wales, Company No: 2557590 > ARM Holdings plc, Registered office 110 Fulbourn Road, Cambridge CB1 9NJ, > Registered in England & Wales, Company No: 2548782 > >
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