On Wed, Jun 15, 2016 at 10:58:29AM +0200, vinoth eswaran wrote: > Hello, > > I working on an embedded project with Minnowboard Turbot. The goal is > to have a camera application running as fast as possible (within 2 > sec). > > For this, I have replaced the UEFI bootloader with the U-boot (Latest > git version - uboot-x86). In u-boot I am seeing that the VGA run on > bios is taking too much time , around 2 sec. i915.ko can't initialize the hw without the vbios settings stuff up first. No idea how much additional init code would be required to make it work. -Daniel > > realmode_call(addr + 0x0003, num_dev, 0xffff, 0x0000, 0xffff, 0x0, > > 0x0); -- This function call takes more time around 2 seconds. > > So I had removed the VESA config from u-boot. Now the u-boot boots up > fast, but I am facing some other issue in the i915 driver Linux > kernel. It seems that the i915 driver is not getting initialized > properly. When the Weston compositor tries to run it crashes. I have > tried to dump the VBIOS using the following commands > > echo 1 > /sys/devices/pci0000:00/0000:00:02.0/rom > cat /sys/devices/pci0000:00/0000:00:02.0/rom > > and found that it is unable to access the VBIOS > i915 0000:00:02.0: Invalid ROM contents > > I think that it is due to the fact that VGA bios is not runned by the > U-boot. Is it possible to run this in linux kernel or any config in > i915 driver to support this? > > or due have any idea to optimize the vga run on bios in u-boot. The > currrent time taken to run VGA bios in u-boot is unacceptable in my > case. > > Any help on this is much appreciated :) > > The logs with drm.debug=0x06 enabled: > [ 0.218171] calling i915_init+0x0/0x99 @ 1 > [ 0.220432] [drm:i915_dump_device_info] i915 device info: gen=7, > pciid=0x0f31 rev=0x11 > flags=is_mobile,need_gfx_hws,is_valleyview,has_hotplug, > [ 0.220566] [drm:i915_gem_gtt_init] GMADR size = 256M > [ 0.220570] [drm:i915_gem_gtt_init] GTT stolen size = 64M > [ 0.220574] [drm:i915_gem_gtt_init] ppgtt mode: 1 > [ 0.221964] i915 0000:00:02.0: Invalid ROM contents > [ 0.227568] [drm:i915_gem_init_stolen] Memory reserved for graphics > device: 65536K, usable: 65536K > [ 0.358545] [drm:i915_gem_setup_global_gtt] clearing unused GTT > space: [0, 7ffff000] > [ 0.364276] [drm:i915_gem_context_init] HW context support initialized > [ 0.364289] [drm:i915_gem_object_create_stolen] creating stolen > object: size=20000 > [ 0.364296] [drm:i915_pages_create_for_stolen] offset=0x0, size=131072 > [ 0.364405] [drm:i915_gem_object_create_stolen] creating stolen > object: size=20000 > [ 0.364411] [drm:i915_pages_create_for_stolen] offset=0x20000, size=131072 > [ 0.364463] [drm:i915_gem_object_create_stolen] creating stolen > object: size=20000 > [ 0.364470] [drm:i915_pages_create_for_stolen] offset=0x40000, size=131072 > [ 0.366181] [drm:i915_gem_object_create_stolen_for_preallocated] > creating preallocated stolen object: stolen_offset=3efa000, > gtt_offset=ffffffff, size=6000 > [ 0.366189] [drm:i915_pages_create_for_stolen] offset=0x3efa000, size=24576 > [ 0.388566] [drm:i915_redisable_vga_power_on] Something enabled VGA > plane, disabling it > [ 0.452154] [drm] GMBUS [i915 gmbus vga] timed out, falling back to > bit banging on pin 2 > [ 0.460168] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent > adapter i915 gmbus vga > [ 0.484566] [drm:i915_redisable_vga_power_on] Something enabled VGA > plane, disabling it > [ 0.588705] [drm:i915_redisable_vga_power_on] Something enabled VGA > plane, disabling it > [ 0.678697] i915 0000:00:02.0: No connectors reported connected with modes > [ 0.678750] [drm] Initialized i915 1.6.0 20151010 for 0000:00:02.0 on minor 0 > [ 0.678853] initcall i915_init+0x0/0x99 returned 0 after 449419 usecs > [ 0.679607] [drm:i915_gem_object_create_stolen] creating stolen > object: size=300000 > [ 0.679615] [drm:i915_pages_create_for_stolen] offset=0x60000, size=3145728 > [ 0.682422] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device > [ 2.945260] [drm:i915_gem_open] > [ 3.487206] [drm:i915_redisable_vga_power_on] Something enabled VGA > plane, disabling it > [ 3.507204] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent > adapter i915 gmbus vga > [ 3.531477] [drm:i915_redisable_vga_power_on] Something enabled VGA > plane, disabling it > [ 3.635502] [drm:i915_redisable_vga_power_on] Something enabled VGA > plane, disabling it > [ 3.778482] [drm:i915_redisable_vga_power_on] Something enabled VGA > plane, disabling it > [ 3.799069] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent > adapter i915 gmbus vga > [ 3.822530] [drm:i915_redisable_vga_power_on] Something enabled VGA > plane, disabling it > [ 3.926638] [drm:i915_redisable_vga_power_on] Something enabled VGA > plane, disabling it > > Mit Freundlichen Grüßen > VinothKumar > _______________________________________________ > Intel-gfx mailing list > Intel-gfx@xxxxxxxxxxxxxxxxxxxxx > https://lists.freedesktop.org/mailman/listinfo/intel-gfx -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
