I found the solution!

I used to /usr/lib/arm-linux-gnueabihf/libgbm.so.1 library and not your 
library /usr/local/lib/libgbm.so.1.0.0, so now it's good for launch kmscube 
AND weston 1.11 !
I will post my experience on my thread:
https://groups.google.com/forum/#!category-topic/beagleboard/beaglebone-black/Xx6NxdUkqAw

Regards,
Rémi A.

Le mercredi 13 mars 2019 16:36:24 UTC+1, [email protected] a écrit :
>
> Dear Matthijs van Duin,
>
> I follow your very good tutorial!
> I want to successfully run kmscube too but I have one error.
> That's why I allow myself to write to you to find the reason and to help 
> other people in the same case as me and I share my experience.
> I use this kernel of debian: 4.9.78-ti-r94
>
> I patched my kernel like you said here :
> So, I have */sys/devices/platform/ocp/56000000.sgx* it's perfect.
>
>
> I generated my dtbo file with the old step like :
> root@beaglebone ~ #dtc -O dtb -o /lib/firmware/CAPE-LVDS-1024-00A0.dtbo 
> -b 0 -@ CAPE-LVDS-1024-00A0.dts
> root@beaglebone ~ #echo "CAPE=CAPE=CAPE-LVDS-1024" > /etc/default/capemgr
> root@beaglebone ~ #reboot
>
>
> If I run "/usr/bin/pvrsrvctl --start --no-module", I have a kernel 
> exception on linux:
> [   69.719666] PVR_K: UM DDK-(3699939) and KM DDK-(3699939) match. [ OK ]
> [   69.740399] Unhandled fault*: external abort on non-linefetch (0x1008) 
> at 0xe0430ca8*
> [   69.748119] *pgd = db488000*
> [   69.750837] *[e0430ca8] *pgd=9b7e6811, *pte=56000653, *ppte=56000453*
> [   69.757172] Internal error: : 1008 [#1] PREEMPT SMP ARM
> [   69.762423] Modules linked in: joydev pvrsrvkm(O) hid_multitouch evdev 
> uio_pdrv_genirq uio usb_f_mass_storage usb_f_acm u_serial usb_f_ecm 
> usb_f_rndis u_ether libcomposite iptable_nat nf_conntrack_ipv4 
> nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle 
> iptable_filter spidev pru_rproc pruss_intc pruss tieqep ip_tables x_tables
> [   69.792588] CPU: 0 PID: 906 Comm: pvrsrvctl Tainted: G           O    
> 4.9.78-ti-r94 #1
> [   69.800538] Hardware name: Generic AM33XX (Flattened Device Tree)
> [   69.806657] task: dc4767c0 task.stack: daf74000
> [   69.811498] PC is at PollForValueKM+0x18/0x11c [pvrsrvkm]
> [   69.817001] LR is at SGXResetInvalDC.constprop.1+0x74/0xa0 [pvrsrvkm]
> [   69.823470] pc : [<bf12e54c>]    lr : [<bf1410e4>]    psr: 60070013
>                sp : daf75a88  ip : daf75ad0  fp : daf75acc
> [   69.834998] r10: daf75e2c  r9 : daf75c84  r8 : 00000000
> [   69.840244] r7 : e0555140  r6 : bf156e30  r5 : 00000000  r4 : daf3f000
> [   69.846800] r3 : 000f4240  r2 : 000000ff  r1 : 00000000  r0 : e0430ca8
> [   69.853357] Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  
> Segment none
> [   69.860522] Control: 10c5387d  Table: 9b488019  DAC: 00000051
> [   69.866292] Process pvrsrvctl (pid: 906, stack limit = 0xdaf74218)
> ...
>
> So I have remove this part on my CAPE-LVDS-1024-00A0.dts:
> mylvds4 {
> target = <&sgx>;
> __overlay__ {
> status = "okay";
> };
> };
>
> And I use a HDMI screen for the tests with default /boot/uEnv.txt file.
>
> I build https://github.com/mvduin/omap5-sgx-ddk-linux  with 
> *ti-img-sgx/1.14.3699939/k4.9* branch.
> That work but I haven't bc_example module (may be it's not important 
> module).
>
> I used your configuration for powervr.ini file config:
> root@beaglebone /opt/kms/kmsxx/build/bin # cat /etc/powervr.ini
> [default]
> WindowSystem=libpvrDRMWSEGL.so
> DefaultPixelFormat=RGB565
>
>
> If I used /usr/lib/arm-linux-gnueabihf/libgbm.so.1.0.0, I have this error:
> root@beaglebone# /usr/bin/pvrsrvctl --start --no-module
> PVR:(Error): OpenServices: PVRDRMOpenRender failed [0, ]
> PVR:(Error): PVRSRVInitSrvConnect: PVRSRVConnect failed [0, ]
> PVR:(Error): SrvInit: PVRSRVInitSrvConnect failed (4) [0, ]
>
>
> So I used your libgbm.so on /usr/local/lib/libgbm.so.1.0.0.
> The command "*/usr/bin/pvrsrvctl --start --no-module*" start perfectly
> PS : I have found th libgmb.so.2.0.0 from Ti git, it's work fine too : 
> https://git.ti.com/glsdk/libgbm
> ( git clone git://git.ti.com/glsdk/libgbm.git )
>
>
> root@beaglebone /opt/kms/kmsxx/build/bin # dmesg |grep -i PVR
> [   20.675978] pvrsrvkm: loading out-of-tree module taints kernel.
> [   20.975742] [drm] Initialized pvr 1.14.3699939 20110701 on minor 1
> [  395.355242] PVR_K: UM DDK-(3699939) and KM DDK-(3699939) match. [ OK ]
> Yeahh all is done here!
>
> Now I compile your kmscube, and When I execute it I have this error:
> root@beaglebone / # kmscube
> trying to load module tilcdc...success.
> ### Display [0]: CRTC = 24, Connector = 26
>        Mode chosen [1024x768] : Clock => 65000, Vertical refresh => 60, 
> Type => 72
>        Horizontal => 1024, 1048, 1184, 1344, 0
>        Vertical => 768, 771, 777, 806, 0
> ### Primary display => ConnectorId = 26, Resolution = 1024x768
> loaded module : gbm_pvr.so
> found valid GBM backend : gbm_pvr.so
> *failed to initialize*
> *failed to initialize EGL*
>
>
>
> Hum... I haven't the good drivers of EGL. So like for libgbm.so , I change 
> that:
> root@beaglebone ~ # ldd /usr/local/bin/kmscube
>        linux-vdso.so.1 (0xbed11000)
>        libm.so.6 => /lib/arm-linux-gnueabihf/libm.so.6 (0xb6e56000)
>        libdrm.so.2 => /usr/lib/arm-linux-gnueabihf/libdrm.so.2 (0xb6e3a000)
>        libgbm.so.2 => /usr/local/lib/libgbm.so.2 (0xb6e27000)
>        *libEGL.so.1 => **/usr/lib/arm-linux-gnueabihf/**libEGL.so.1* 
> (0xb6e15000)
>        libIMGegl.so.1 => /usr/lib/libIMGegl.so.1 (0xb6df0000)
>        libdrm_omap.so.1 => /usr/lib/arm-linux-gnueabihf/libdrm_omap.so.1 
> (0xb6ddd000)
>        *libGLESv2.so.2 => /usr/lib/arm-linux-gnueabihf/libGLESv2.so.2* 
> (0xb6dbf000)
>        libsrv_um.so.1 => /usr/lib/libsrv_um.so.1 (0xb6d88000)
>        libc.so.6 => /lib/arm-linux-gnueabihf/libc.so.6 (0xb6c9a000)
>        /lib/ld-linux-armhf.so.3 (0xb6ef1000)
>        libudev.so.1 => /lib/arm-linux-gnueabihf/libudev.so.1 (0xb6c83000)
>        libwayland-server.so.0 => 
> /usr/lib/arm-linux-gnueabihf/libwayland-server.so.0 (0xb6c68000)
>        libffi.so.6 => /usr/lib/arm-linux-gnueabihf/libffi.so.6 (0xb6c52000)
>        libdbm.so.1 => /usr/lib/libdbm.so.1 (0xb6c40000)
>        libpthread.so.0 => /lib/arm-linux-gnueabihf/libpthread.so.0 
> (0xb6c1c000)
>        libGLdispatch.so.0 => 
> /usr/lib/arm-linux-gnueabihf/libGLdispatch.so.0 (0xb6b9e000)
>        libdl.so.2 => /lib/arm-linux-gnueabihf/libdl.so.2 (0xb6b8b000)
>        librt.so.1 => /lib/arm-linux-gnueabihf/librt.so.1 (0xb6b75000)
>        libgcc_s.so.1 => /lib/arm-linux-gnueabihf/libgcc_s.so.1 (0xb6b4c000)
>
> to:
>
> root@beaglebone /opt/kms/kmsxx/build/bin # ldd /usr/local/bin/kmscube
>        linux-vdso.so.1 (0xbeb72000)
>        libm.so.6 => /lib/arm-linux-gnueabihf/libm.so.6 (0xb6edc000)
>        libdrm.so.2 => /usr/lib/arm-linux-gnueabihf/libdrm.so.2 (0xb6ec0000)
>        libgbm.so.2 => /usr/local/lib/libgbm.so.2 (0xb6ead000)
>        *libEGL.so.1 => /usr/lib/libEGL.so.1* (0xb6e9b000)
>        libIMGegl.so.1 => /usr/lib/libIMGegl.so.1 (0xb6e76000)
>        libdrm_omap.so.1 => /usr/lib/arm-linux-gnueabihf/libdrm_omap.so.1 
> (0xb6e63000)
>        *libGLESv2.so.2 => /usr/lib/libGLESv2.so.2* (0xb6dfb000)
>        libsrv_um.so.1 => /usr/lib/libsrv_um.so.1 (0xb6dc4000)
>        libc.so.6 => /lib/arm-linux-gnueabihf/libc.so.6 (0xb6cd6000)
>        /lib/ld-linux-armhf.so.3 (0xb6f77000)
>        libudev.so.1 => /lib/arm-linux-gnueabihf/libudev.so.1 (0xb6cbf000)
>        libwayland-server.so.0 => 
> /usr/lib/arm-linux-gnueabihf/libwayland-server.so.0 (0xb6ca4000)
>        libffi.so.6 => /usr/lib/arm-linux-gnueabihf/libffi.so.6 (0xb6c8e000)
>        libdbm.so.1 => /usr/lib/libdbm.so.1 (0xb6c7c000)
>        libpthread.so.0 => /lib/arm-linux-gnueabihf/libpthread.so.0 
> (0xb6c58000)
>        libdl.so.2 => /lib/arm-linux-gnueabihf/libdl.so.2 (0xb6c45000)
>        librt.so.1 => /lib/arm-linux-gnueabihf/librt.so.1 (0xb6c2f000)
>        libgcc_s.so.1 => /lib/arm-linux-gnueabihf/libgcc_s.so.1 (0xb6c06000)
>
>
>
> And I execute again kmscube:
> root@beaglebone / # kmscube
> trying to load module tilcdc...success.
> ### Display [0]: CRTC = 24, Connector = 26
>        Mode chosen [1024x768] : Clock => 65000, Vertical refresh => 60, 
> Type => 72
>        Horizontal => 1024, 1048, 1184, 1344, 0
>        Vertical => 768, 771, 777, 806, 0
> ### Primary display => ConnectorId = 26, Resolution = 1024x768
> loaded module : gbm_pvr.so
> found valid GBM backend : gbm_pvr.so
> Using display 0x1 with EGL version 1.4
> EGL Version "1.4 build 1.14@3699939 (MAIN)"
> EGL Vendor "Imagination Technologies"
> EGL Extensions "EGL_IMG_client_api_ogl EGL_KHR_image EGL_KHR_image_base 
> EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image 
> EGL_KHR_gl_renderbuffer_image EGL_KHR_vg_parent_image EGL_IMG_cl_image 
> EGL_KHR_fence_sync EGL_IMG_context_priority EGL_IMG_hibernate_process 
> EGL_IMG_image_plane_attribs EGL_KHR_surfaceless_context EGL_KHR_wait_sync 
> EGL_KHR_create_context EGL_WL_bind_wayland_display 
> EGL_EXT_image_dma_buf_import"
> *Segmentation fault*
>
>
> ***Arggggg** !!!* *** *I think I'm not far from finish it, but why do I 
> have this error now? Do you have an idea of ​​what I miss?
>
> May be this command can help to solve my problem:
> root@beaglebone ~ # ll /sys/class/drm
> total 0
> drwxr-xr-x  2 root root    0 Mar 13 16:33 .
> drwxr-xr-x 59 root root    0 Mar 13 16:33 ..
> lrwxrwxrwx  1 root root    0 Mar 13 16:33 card0 -> 
> ../../devices/platform/ocp/4830e000.lcdc/drm/card0
> lrwxrwxrwx  1 root root    0 Mar 13 16:33 card0-HDMI-A-1 -> 
> ../../devices/platform/ocp/4830e000.lcdc/drm/card0/card0-HDMI-A-1
> lrwxrwxrwx  1 root root    0 Mar 13 16:33 card1 -> 
> ../../devices/platform/ocp/56000000.sgx/drm/card1
> lrwxrwxrwx  1 root root    0 Mar 13 16:33 controlD64 -> 
> ../../devices/platform/ocp/4830e000.lcdc/drm/controlD64
> lrwxrwxrwx  1 root root    0 Mar 13 16:33 renderD128 -> 
> ../../devices/platform/ocp/56000000.sgx/drm/renderD128
> -r--r--r--  1 root root 4.0K Mar 13 16:33 version
>
> I don't understand what I miss ...
>
> Thanks so much for any support.
>
> Best regards,
> Rémi A.
>
> Le lundi 6 février 2017 04:49:19 UTC+1, Matthijs van Duin a écrit :
>>
>> On Sunday, 22 January 2017 01:12:53 UTC+1, RobertCNelson wrote:
>>>
>>> It's a different stack, and we don't really have TI's new userspace 
>>> working yet.
>>
>>
>> I have been able to successfully run kmscube on the new stack today!
>>
>> Here's the set of magic ingredients:
>>
>>
>> https://github.com/dutchanddutch/bb-kernel/tree/am33x-v4.9/patches/drivers/ti/sgx
>>  
>> <https://www.google.com/url?q=https%3A%2F%2Fgithub.com%2Fdutchanddutch%2Fbb-kernel%2Ftree%2Fam33x-v4.9%2Fpatches%2Fdrivers%2Fti%2Fsgx&sa=D&sntz=1&usg=AFQjCNFHQ7tFiwOMtWnaVf1mXtOQX3eaKA>
>> https://github.com/mvduin/omap5-sgx-ddk-linux  (I included my build 
>> script)
>> https://github.com/mvduin/omap5-sgx-ddk-um-linux
>> https://github.com/mvduin/libgbm
>> https://github.com/mvduin/kmscube
>>
>> The last four repos are all clones of git.ti.com repositories with minor 
>> patches applied.
>>
>> The key observation is that libpvrGBMWSEGL is not just a WSEGL backend 
>> but also a GBM backend under the alias "gbm_pvr.so". This requires a libgbm 
>> which supports backend plugins, which seems to have been removed from 
>> mainline libgbm. Beware that libgbm only searches for plugins in 
>> ${prefix}/lib/gbm/ so be sure to use the same prefix for libgbm as for 
>> omap5-sgx-ddk-um-linux, or add appropriate symlinks.
>>
>> (The libraries have quite a few completely bogus dependencies, e.g. 
>> libdrm_omap is of course of no use on an am335x, but it doesn't cause any 
>> real issues.)
>>
>> I currently have this in my /etc/powervr.ini:
>> [default]
>> WindowSystem=libpvrDRMWSEGL.so
>> DefaultPixelFormat=RGB565
>>
>> kmscube ignores the WindowSystem but some older apps like gles1test1 do 
>> still care. I'm not sure where I picked up the DefaultPixelFormat or 
>> whether it does anything useful, but if it does anything it's probably 
>> desirable.
>>
>> Now, who's going to give Wayland a swing? :-) 
>>
>

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