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. 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
