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Getting started with custom VHDL and Linux

Former Member

Hello all,
I'm just getting started with a zedboard where I have to write some application software. So I'm fine with using the standard Linux that comes with it. But the thing is that our electronics guy has to write a custom VHDL for it.

What does he need to give me exactly to put on the card ? A boot.bin and a dts file ? Is that all ?

So after I convert the dts to dtd, all I need to have on the card is:
System.map
boot.bin
devicetree.dtb
uImage
uramdisk.image.gz

Is that correct or do I need to recreate the files (System.map, uImage, uramdisk) as well ?
Thanks

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    OK, almost there. I now get to:

    ...
    [   12.877328] TCP: cubic registered
    [   12.877329] NET: Registered protocol family 17
    [   12.877330] Registering SWP/SWPB emulation handler
    [   12.877331] drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
    [   12.877335] mmc0: new high speed SDHC card at address 59b4
    [   12.877336] Freeing unused kernel memory: 196K (c0672000 - c06a3000)
    [   12.877339] mmcblk0: mmc0:59b4 NCard 14.7 GiB
    [   12.877340]  mmcblk0: p1
    INIT: version 2.88 booting
    Starting Bootlog daemon: bootlogd.
    Creating /dev/flash/* device nodes
    [   12.877351] random: dd urandom read with 7 bits of entropy available
    Configuring network interfaces... [   12.877347] xemacps e000b000.ps7-ethernet: eth0: no PHY found
    [   12.877348] xemacps e000b000.ps7-ethernet: XEMACPS mii bus mii_probe fail.
    ifconfig: SIOCSIFFLAGS: No such device or address
    starting Busybox inet Daemon: inetd... done.
    INIT: Entering runlevel: 5
    Starting Dropbear SSH server: Will output 1024 bit rsa secret key to '/etc/dropbear/dropbear_rsa_host_key'
    Generating key, this may take a while...
    Public key portion is:
    ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAAAgwCdzj9ip66OT9BEuPp3x+ptaq1YlJYwNul3M7KMQx4DWdgO+TMYL4nauHb0HHJcO8cUJvbvDmRqc6afaJ34n80N4lUVrGkLrO5g3lJq
    Fingerprint: md5 3b:86:db:74:04:36:38:a0:f1:67:18:54:41:7a:5f:8c
    dropbear.
    Stopping Bootlog daemon: bootlogd.
    Starting tcf-agent: OK

    INIT: Id "PS0" respawning too fast: disabled for 5 minutes
    INIT: no more processes left in this runlevel
    INIT: Id "PS0" respawning too fast: disabled for 5 minutes


    But then it hangs. I'm using serial port 1 instead of 0, as shown in the dts file:
    bootargs = "console=ttyPS1,115200 root=/dev/ram rw earlyprintk";
    linux,stdout-path = "/amba@0/serial@e0001000";
    Could that be the reason (say init expects the console to be on port 0). Any other idea ?

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  • 0

    OK, almost there. I now get to:

    ...
    [   12.877328] TCP: cubic registered
    [   12.877329] NET: Registered protocol family 17
    [   12.877330] Registering SWP/SWPB emulation handler
    [   12.877331] drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
    [   12.877335] mmc0: new high speed SDHC card at address 59b4
    [   12.877336] Freeing unused kernel memory: 196K (c0672000 - c06a3000)
    [   12.877339] mmcblk0: mmc0:59b4 NCard 14.7 GiB
    [   12.877340]  mmcblk0: p1
    INIT: version 2.88 booting
    Starting Bootlog daemon: bootlogd.
    Creating /dev/flash/* device nodes
    [   12.877351] random: dd urandom read with 7 bits of entropy available
    Configuring network interfaces... [   12.877347] xemacps e000b000.ps7-ethernet: eth0: no PHY found
    [   12.877348] xemacps e000b000.ps7-ethernet: XEMACPS mii bus mii_probe fail.
    ifconfig: SIOCSIFFLAGS: No such device or address
    starting Busybox inet Daemon: inetd... done.
    INIT: Entering runlevel: 5
    Starting Dropbear SSH server: Will output 1024 bit rsa secret key to '/etc/dropbear/dropbear_rsa_host_key'
    Generating key, this may take a while...
    Public key portion is:
    ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAAAgwCdzj9ip66OT9BEuPp3x+ptaq1YlJYwNul3M7KMQx4DWdgO+TMYL4nauHb0HHJcO8cUJvbvDmRqc6afaJ34n80N4lUVrGkLrO5g3lJq
    Fingerprint: md5 3b:86:db:74:04:36:38:a0:f1:67:18:54:41:7a:5f:8c
    dropbear.
    Stopping Bootlog daemon: bootlogd.
    Starting tcf-agent: OK

    INIT: Id "PS0" respawning too fast: disabled for 5 minutes
    INIT: no more processes left in this runlevel
    INIT: Id "PS0" respawning too fast: disabled for 5 minutes


    But then it hangs. I'm using serial port 1 instead of 0, as shown in the dts file:
    bootargs = "console=ttyPS1,115200 root=/dev/ram rw earlyprintk";
    linux,stdout-path = "/amba@0/serial@e0001000";
    Could that be the reason (say init expects the console to be on port 0). Any other idea ?

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