Add network device to L4Linux

Yiyang Su suyiyang at hotmail.com
Wed Sep 27 19:13:10 CEST 2017


Hi all,


I created a new device tree based on the simple.dts file and the L4Linux could be booted.

But there is no progress with adding network device.


One problem is hwirq is too large for L4-icu such as:

    WARNING: CPU: 0 PID: 6 at /home/yiyang/Workplace/Microkernel/l4re/src/l4linux/kernel/irq/irqdomain.c:342 irq_domain_associate+0x13c/0x1c8
    error: hwirq 0x75 is too large for L4-icu
    Modules linked in:
    CPU: 0 PID: 6 Comm: kworker/u2:0 Tainted: G        W       4.7.0-l4 #9
    Hardware name: L4Linux (DT)

Another problem is: sun7i-dwmac 1c50000.ethernet: could not get tx clock
This problem may be explained by the comment in l4linux/arch/arm/boot/dts/sun7i-a20.dtsi line 611 such as:
"""
  The following two are dummy clocks, placeholders used in the gmac_tx clock. The gmac driver will choose one parent
  depending on the PHY interface mode, using clk_set_rate auto-reparenting. The actual TX clock rate is not controlled
  by the gmac_tx clock.
"""
Any suggestion is very appreciated.


----------  new dts file start -----------

/*
 * Basic DT for L4Linux.
 */

/dts-v1/;

/ {
    interrupt-parent = <&intc>;

    model = "L4Linux (DT)";
    compatible = "L4Linux";

    #address-cells = <1>;
    #size-cells = <1>;
    chosen { };
    aliases {
        ethernet0 = &gmac;
    };

    intc: l4icu {
        compatible = "l4,icu";
        interrupt-controller;
        /* type can be 'gic' or 'single' currently */
        l4icu-type = "gic";
        #interrupt-cells = <3>;
        /*
        l4icu-type = "single";
        #interrupt-cells = <1>;
        */
    };

    clocks {
        #address-cells = <1>;
        #size-cells = <1>;
        ranges;

        osc24M: clk at 01c20050 {
            #clock-cells = <0>;
            compatible = "allwinner,sun4i-a10-osc-clk";
            reg = <0x01c20050 0x4>;
            clock-frequency = <24000000>;
            clock-output-names = "osc24M";
        };

        osc32k: clk at 0 {
            #clock-cells = <0>;
            compatible = "fixed-clock";
            clock-frequency = <32768>;
            clock-output-names = "osc32k";
        };

        pll1: clk at 01c20000 {
            #clock-cells = <0>;
            compatible = "allwinner,sun4i-a10-pll1-clk";
            reg = <0x01c20000 0x4>;
            clocks = <&osc24M>;
            clock-output-names = "pll1";
        };

        pll6: clk at 01c20028 {
            #clock-cells = <1>;
            compatible = "allwinner,sun4i-a10-pll6-clk";
            reg = <0x01c20028 0x4>;
            clocks = <&osc24M>;
            clock-output-names = "pll6_sata", "pll6_other", "pll6",
                         "pll6_div_4";
        };

        cpu: cpu at 01c20054 {
            #clock-cells = <0>;
            compatible = "allwinner,sun4i-a10-cpu-clk";
            reg = <0x01c20054 0x4>;
            clocks = <&osc32k>, <&osc24M>, <&pll1>, <&pll6 1>;
            clock-output-names = "cpu";
        };

        axi: axi at 01c20054 {
            #clock-cells = <0>;
            compatible = "allwinner,sun4i-a10-axi-clk";
            reg = <0x01c20054 0x4>;
            clocks = <&cpu>;
            clock-output-names = "axi";
        };

        ahb: ahb at 01c20054 {
            #clock-cells = <0>;
            compatible = "allwinner,sun5i-a13-ahb-clk";
            reg = <0x01c20054 0x4>;
            clocks = <&axi>, <&pll6 3>, <&pll6 1>;
            clock-output-names = "ahb";
            /*
             * Use PLL6 as parent, instead of CPU/AXI
             * which has rate changes due to cpufreq
             */
            assigned-clocks = <&ahb>;
            assigned-clock-parents = <&pll6 3>;
        };

        ahb_gates: clk at 01c20060 {
            #clock-cells = <1>;
            compatible = "allwinner,sun7i-a20-ahb-gates-clk";
            reg = <0x01c20060 0x8>;
            clocks = <&ahb>;
            clock-indices = <0>, <1>,
                    <2>, <3>, <4>,
                    <5>, <6>, <7>, <8>,
                    <9>, <10>, <11>, <12>,
                    <13>, <14>, <16>,
                    <17>, <18>, <20>, <21>,
                    <22>, <23>, <25>,
                    <28>, <32>, <33>, <34>,
                    <35>, <36>, <37>, <40>,
                    <41>, <42>, <43>,
                    <44>, <45>, <46>,
                    <47>, <49>, <50>,
                    <52>;
            clock-output-names = "ahb_usb0", "ahb_ehci0",
                "ahb_ohci0", "ahb_ehci1", "ahb_ohci1",
                "ahb_ss", "ahb_dma", "ahb_bist", "ahb_mmc0",
                "ahb_mmc1", "ahb_mmc2", "ahb_mmc3", "ahb_ms",
                "ahb_nand", "ahb_sdram", "ahb_ace",
                "ahb_emac", "ahb_ts", "ahb_spi0", "ahb_spi1",
                "ahb_spi2", "ahb_spi3", "ahb_sata",
                "ahb_hstimer", "ahb_ve", "ahb_tvd", "ahb_tve0",
                "ahb_tve1", "ahb_lcd0", "ahb_lcd1", "ahb_csi0",
                "ahb_csi1", "ahb_hdmi1", "ahb_hdmi0",
                "ahb_de_be0", "ahb_de_be1", "ahb_de_fe0",
                "ahb_de_fe1", "ahb_gmac", "ahb_mp",
                "ahb_mali";
        };

        apb0: apb0 at 01c20054 {
            #clock-cells = <0>;
            compatible = "allwinner,sun4i-a10-apb0-clk";
            reg = <0x01c20054 0x4>;
            clocks = <&ahb>;
            clock-output-names = "apb0";
        };

        apb0_gates: clk at 01c20068 {
            #clock-cells = <1>;
            compatible = "allwinner,sun7i-a20-apb0-gates-clk";
            reg = <0x01c20068 0x4>;
            clocks = <&apb0>;
            clock-indices = <0>, <1>,
                    <2>, <3>, <4>,
                    <5>, <6>, <7>,
                    <8>, <10>;
            clock-output-names = "apb0_codec", "apb0_spdif",
                "apb0_ac97", "apb0_iis0", "apb0_iis1",
                "apb0_pio", "apb0_ir0", "apb0_ir1",
                "apb0_iis2", "apb0_keypad";
        };

        /*
         * The following two are dummy clocks, placeholders
         * used in the gmac_tx clock. The gmac driver will
         * choose one parent depending on the PHY interface
         * mode, using clk_set_rate auto-reparenting.
         *
         * The actual TX clock rate is not controlled by the
         * gmac_tx clock.
         */
        mii_phy_tx_clk: clk at 2 {
            #clock-cells = <0>;
            compatible = "fixed-clock";
            clock-frequency = <25000000>;
            clock-output-names = "mii_phy_tx";
        };

        gmac_int_tx_clk: clk at 3 {
            #clock-cells = <0>;
            compatible = "fixed-clock";
            clock-frequency = <125000000>;
            clock-output-names = "gmac_int_tx";
        };

        gmac_tx_clk: clk at 01c20164 {
            #clock-cells = <0>;
            compatible = "allwinner,sun7i-a20-gmac-clk";
            reg = <0x01c20164 0x4>;
            clocks = <&mii_phy_tx_clk>, <&gmac_int_tx_clk>;
            clock-output-names = "gmac_tx";
        };
    };

    soc at 01c00000 {
        compatible = "simple-bus";
        #address-cells = <1>;
        #size-cells = <1>;
        ranges;

        pio: pinctrl at 01c20800 {
            compatible = "allwinner,sun7i-a20-pinctrl";
            reg = <0x01c20800 0x400>;

            /**
             * l4linux/include/dt-bindings/interrupt-controller/arm-gic.h
             * #define GIC_SPI 0
             * l4linux/include/dt-bindings/interrupt-controller/irq.h
             * #define IRQ_TYPE_LEVEL_HIGH    4
             */
            //interrupts = <GIC_SPI 28 IRQ_TYPE_LEVEL_HIGH>;
            interrupts = <0 28 4>;

            clocks = <&apb0_gates 5>;
            gpio-controller;
            interrupt-controller;
            #interrupt-cells = <3>;
            #gpio-cells = <3>;

            gmac_pins_rgmii_a: gmac_rgmii at 0 {
                allwinner,pins = "PA0", "PA1", "PA2",
                        "PA3", "PA4", "PA5", "PA6",
                        "PA7", "PA8", "PA10",
                        "PA11", "PA12", "PA13",
                        "PA15", "PA16";
                allwinner,function = "gmac";
                /*
                 * data lines in RGMII mode use DDR mode
                 * and need a higher signal drive strength
                 */

                /**
                 * l4linux/include/dt-bindings/pinctrl/sun4i-a10.h
                 * #define SUN4I_PINCTRL_40_MA 3
                 * #define SUN4I_PINCTRL_NO_PULL 0
                 */
                //allwinner,drive = <SUN4I_PINCTRL_40_MA>;
                //allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
                allwinner,drive = <3>;
                allwinner,pull = <0>;
            };
        };

        gmac: ethernet at 01c50000 {
            compatible = "allwinner,sun7i-a20-gmac";
            reg = <0x01c50000 0x10000>;

            /**
             * l4linux/include/dt-bindings/interrupt-controller/arm-gic.h
             * #define GIC_SPI 0
             * l4linux/include/dt-bindings/interrupt-controller/irq.h
             * #define IRQ_TYPE_LEVEL_HIGH    4
             */
            //interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>;
            interrupts = <0 85 4>;
            interrupt-names = "macirq";
            clocks = <&ahb_gates 49>, <&gmac_tx_clk>;
            clock-names = "stmmaceth", "allwinner_gmac_tx";
            snps,pbl = <2>;
            snps,fixed-burst;
            snps,force_sf_dma_mode;
            #address-cells = <1>;
            #size-cells = <0>;

            /**
             * following refer to sun7i-a20-cubietruck.dts at &gmac
             */
            pinctrl-names = "default";
            pinctrl-0 = <&gmac_pins_rgmii_a>;
            phy = <&phy1>;
            phy-mode = "rgmii";
            status = "okay";

            phy1: ethernet-phy at 1 {
                reg = <1>;
            };
        };
    };
};


----------  new dts file end  -----------


----------  boot log start  ----------

L4 Bootstrapper
  Build: #23 Mi 27. Sep 18:01:17 CEST 2017, 5.4.1 20170404
  Scanning up to 1024 MB RAM, starting at offset 32MB
  Memory size is 1024MB (40000000 - 7fffffff)
  RAM: 0000000040000000 - 000000007fffffff: 1048576kB
  Total RAM: 1024MB
  Scanning fiasco
  Scanning sigma0
  Scanning moe
  Moving up to 12 modules behind 41100000
  moving module 02 { 41a1b000-41a4c4ab } -> { 41b0b000-41b3c4ab } [201900]
  moving module 01 { 41a09000-41a1a33f } -> { 41af9000-41b0a33f } [70464]
  moving module 00 { 41986000-41a08b9b } -> { 41a76000-41af8b9b } [535452]
  moving module 11 { 41686000-41985fff } -> { 41776000-41a75fff } [3145728]
  moving module 10 { 41244000-41685487 } -> { 41334000-41775487 } [4461704]
  moving module 09 { 41243000-412430fa } -> { 41333000-413330fa } [251]
  moving module 08 { 41242000-41242363 } -> { 41332000-41332363 } [868]
  moving module 07 { 41241000-4124139d } -> { 41331000-4133139d } [926]
  moving module 06 { 4123f000-4124023d } -> { 4132f000-4133023d } [4670]
  moving module 05 { 41094000-4123e8e7 } -> { 41184000-4132e8e7 } [1747176]
  moving module 04 { 41032000-410936b3 } -> { 41122000-411836b3 } [399028]
  moving module 03 { 41010000-4103146f } -> { 41100000-4112146f } [136304]
  Loading fiasco
  Loading sigma0
  Loading moe
  find kernel info page...
  found kernel info page (via ELF) at 40002000
Regions of list 'regions'
    [ 40000000,  400001c3] {      1c4} Root   mbi_rt
    [ 40001000,  40001a7f] {      a80} Kern   fiasco
    [ 40002000,  40092fff] {    91000} Kern   fiasco
    [ 400c0000,  400ca3e7] {     a3e8} Sigma0 sigma0
    [ 400d0000,  400d6177] {     6178} Sigma0 sigma0
    [ 40140000,  4016eb7b] {    2eb7c} Root   moe
    [ 40170000,  4017661b] {     661c} Root   moe
    [ 41000000,  4100f5cb] {     f5cc} Boot   bootstrap
    [ 41100000,  41a75fff] {   976000} Root   Module
  found kernel options (via ELF) at 40003000
  API Version: (87) experimental
  Sigma0 config    ip:400c0100 sp:00000000
  Roottask config  ip:40140210 sp:00000000
  Starting kernel fiasco at 400011bc
  Non-HYP kernel detected but running in HYP mode, switching back.
Hello from Startup::stage2
Number of IRQs available at this GIC: 160
FPU: Initialize
FPU0: Subarch: 2, Part: 30, Rev: 4, Var: 7, Impl: 41
ARM generic timer: freq=24000000 interval=24000 cnt=213224466
SERIAL ESC: allocated IRQ 33 for serial uart
Not using serial hack in slow timer handler.
Welcome to L4/Fiasco.OC!
L4/Fiasco.OC microkernel on arm
Rev: unknown compiled with gcc 5.4.1 20170404 for Allwinner A20    []
Build: #5 Thu Sep 21 16:27:20 CEST 2017

Calibrating timer loop... done.
MDB: use page size: 20
MDB: use page size: 12
SIGMA0: Hello!
  KIP @ 40002000
  allocated 4KB for maintenance structures
SIGMA0: Dump of all resource maps
RAM:------------------------
[4:40000000;40000fff]
[0:40093000;400bffff]
[0:400cb000;400cffff]
[0:400d7000;4013ffff]
[4:40140000;4016efff]
[0:4016f000;4016ffff]
[4:40170000;40176fff]
[0:40177000;410fffff]
[4:41100000;41a75fff]
[0:41a76000;7effffff]
IOMEM:----------------------
[0:0;3fffffff]
[0:80000000;ffffffff]
mmap() called: unimplemented!
MOE: Hello world
MOE: found 1021628 KByte free memory
MOE: found RAM from 40000000 to 7f000000
MOE: allocated 1008 KByte for the page array @0x40177000
MOE: virtual user address space [0-bfffffff]
MOE: rom name space cap -> [C:103000]
  BOOTFS: [41100000-41121470] [C:105000] l4re
  BOOTFS: [41122000-411836b4] [C:107000] ned
  BOOTFS: [41184000-4132e8e8] [C:109000] io
  BOOTFS: [4132f000-4133023e] [C:10b000] cubietruck.dtb
  BOOTFS: [41331000-4133139e] [C:10d000] l4lx-net-cubi.cfg
  BOOTFS: [41332000-41332364] [C:10f000] l4lx-net-cubi.devs
  BOOTFS: [41333000-413330fb] [C:111000] l4lx-net-cubi.io
  BOOTFS: [41334000-41775488] [C:113000] vmlinuz
  BOOTFS: [41776000-41a76000] [C:115000] ramdisk-arm.rd
MOE: cmdline: moe rom/l4lx-net-cubi.cfg
MOE: Starting: rom/ned rom/l4lx-net-cubi.cfg
MOE: loading 'rom/ned'
Ned says: Hi World!
Ned: loading file: 'rom/l4lx-net-cubi.cfg'
IO      | Io service
IO      | Verboseness level: 4
IO      | unused physical memory space:
IO      |   [00000000000000-0000003fffffff]
IO      |   [00000080000000-000000ffffffff]
IO      | no 'iommu' capability found use CPU-phys for DMA
IO      | Loading: config 'rom/l4lx-net-cubi.devs'
IO      | warning: inconsistent fixed resource @ device: /System Bus/
IO      |   : hid=sun7ia20gmac
IO      |   DMADOM  [00000000000000-00000000000000 1] non-pref (32bit) (align=0 flags=6)
IO      | Loading: config 'rom/l4lx-net-cubi.io'
IO      | Real Hardware -----------------------------------
IO      | System Bus: hid=
IO      |   Resources: ==== start ====
IO      |   DMADOM  [00000000000000-00000000000000 1] non-pref (32bit) (align=0 flags=6)
IO      |   Resources: ===== end =====
IO      |   NIC: hid=sun7ia20gmac
IO      |     Clients: ===== start ====
IO      |       NIC: [N2Vi9Proxy_devE]
IO      |     Clients: ===== end ====
IO      |     Resources: ==== start ====
IO      |     IOMEM   [00000001c50000-00000001c5ffff 10000] non-pref (32bit) (align=ffff flags=2)
IO      |     IRQ     [00000000000000-00000000000000 1] none (32bit) (align=0 flags=1)
IO      |     IRQ     [00000000000055-00000000000055 1] none (32bit) (align=0 flags=1)
IO      |     IRQ     [00000000000004-00000000000004 1] none (32bit) (align=0 flags=1)
IO      |     DMADOM  [00000000000000-00000000000000 1] non-pref (32bit) (align=0 flags=6)
IO      |     Resources: ===== end =====
IO      | warning: could not register control interface at cap 'platform_ctl'
IO      | Ready. Waiting for request.
PH  0 offs=00010000 flags=rwx PH-type=0x1
      virt=02000000 evirt=0249973c
      phys=02000000 ephys=0249973c
      f_sz=00410653 memsz=0049973c
PH  1 offs=003cec78 flags=r-x PH-type=0x4
      virt=023bec78 evirt=023bec9c
      phys=023bec78 ephys=023bec9c
      f_sz=00000024 memsz=00000024
PH  2 offs=00000000 flags=rwx PH-type=0x6474e551
      virt=00000000 evirt=00000000
      phys=00000000 ephys=00000000
      f_sz=00000000 memsz=00000000
Starting binary at 0x2000330, argc=10 argv=0xafff4f7c *argv=0xb1007ff4 argv0=rom/vmlinuz
External resolver is at 0xa80007f0
======> L4Linux starting... <========
Linux version 4.7.0-l4 (yiyang at i85217) (gcc version 5.4.1 20170404 (Linaro GCC 5.4-2017.05) ) #9 Thu Sep 21 16:20:48 CEST 2017
Binary name: rom/vmlinuz
   This is an AEABI build.
Linux kernel command line (9 args): mem=64M console=ttyLv0 earlyprintk=1 l4x_rd=rom/ramdisk-arm.rd root=1:0 rw ramdisk_size=4000 l4x_dtb=rom/cubietruck.dtb ip=192.168.0.16::192.168.0.1:255.255.255.0:l4box:eth0:on
CPU mapping (l:p)[1]: 0:0
Image: 02000000 - 02600000 [6144 KiB].
Areas: Text:     02000000 - 023bec9c [3835kB]
       RO-Data:  022ce000 - 023a9000 [876kB]
       Data:     023e8000 - 0240bd80 [143kB]
       Init:     023bf000 - 023e8000 [164kB]
       BSS:      02410653 - 0249973c [548kB]
Device scan:
  Device: L4ICU
  Device: NIC
    MEM: 01c50000 - 01c5ffff
    IRQ: 00000000 - 00000000
    IRQ: 00000055 - 00000055
    IRQ: 00000004 - 00000004
    DMAD: 00000000 - 00000000
Device scan done.
l4lx_thread_create: Created thread 41e (cpu0) (u:b3000e00, v:b3000c00, sp:023e9fa4)
main thread will be 41e
L4x: section-with-init(-data): Virt: 0x2000000 to 0x2499fff [4712 KiB]
section-with-init(-data): Phys: 0x40273000 to 0x4070cfff, [4712 KiB]
L4x: section-with-init-text: Virt: 0x2000000 to 0x2499fff [4712 KiB]
error: failed to get physical address for 2000000.
L4x: Main thread running, waiting...
L4x: Memory size: 64MB
L4x: Setting superpages for main memory
L4x: Adjusted memory start: 02000000
L4x:     Main memory: Virt: 0x2600000 to 0x65fffff [65536 KiB]
    Main memory: Phys: 0x41c00000 to 0x45bfffff, [65536 KiB]
l4x: vmalloc area: 06600000 - 0e600000
L4x:            text: Virt: 0x2000000 to 0x2499fff [4712 KiB]
error: failed to get physical address for 2000000.
Booting Linux on physical CPU 0x0
Linux version 4.7.0-l4 (yiyang at i85217) (gcc version 5.4.1 20170404 (Linaro GCC 5.4-2017.05) ) #9 Thu Sep 21 16:20:48 CEST 2017
DTB: virt=02600100 phys=41c00100
CPU: Fiasco [410fc074] revision 4 (ARMv7), cr=00400000
CPU: div instructions available: patching division code
CPU: PIPT / VIPT nonaliasing data cache, VIPT nonaliasing instruction cache
Machine model: L4Linux (DT)
bootconsole [earlykdb0] enabled
Memory policy: Data cache writealloc
CPU: All CPU(s) started in SVC mode.
Loading: rom/ramdisk-arm.rd
INITRD: Size of RAMdisk is 3072KiB
INITRD: 00002000 - 00302000
RAMdisk from 00002000 to 00302000 [3072KiB]
Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 17717
Kernel command line: mem=64M console=ttyLv0 earlyprintk=1 l4x_rd=rom/ramdisk-arm.rd root=1:0 rw ramdisk_size=4000 l4x_dtb=rom/cubietruck.dtb ip=192.168.0.16::192.168.0.1:255.255.255.0:l4box:eth0:on
PID hash table entries: 512 (order: -1, 2048 bytes)
Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
Memory: 64752K/71684K available (2959K kernel code, 143K rwdata, 876K rodata, 164K init, 548K bss, 6932K reserved, 0K cma-reserved)
Virtual kernel memory layout:
    vector  : 0xbffff000 - 0xc0000000   (   4 kB)
    fixmap  : 0xffc00000 - 0xfff00000   (3072 kB)
    vmalloc : 0x06600000 - 0x0e600000   ( 128 MB)
    lowmem  : 0x00000000 - 0x06600000   ( 102 MB)
    modules : 0x01010000 - 0x02000000   (  15 MB)
      .text : 0x02000000 - 0x023bec9c   (3836 kB)
      .init : 0x023bf000 - 0x023e8000   ( 164 kB)
      .data : 0x023e8000 - 0x0240bd80   ( 144 kB)
       .bss : 0x02410653 - 0x0249973c   ( 549 kB)
NR_IRQS:282
clocksource: l4kipclk: mask: 0xffffffffffffffff max_cycles: 0x1d854df40, max_idle_ns: 3526361616960 ns
l4timer: Using IRQ210
l4lx_thread_create: Created thread 423 (timer0) (u:b3000a00, v:00000000, sp:02431fa0)
sched_clock: 64 bits at 1000kHz, resolution 1000ns, wraps every 2199023255500ns
Console: colour dummy device 80x30
console [ttyLv0] enabled
console [ttyLv0] enabled
bootconsole [earlykdb0] disabled
bootconsole [earlykdb0] disabled
Calibrating delay loop... 1810.43 BogoMIPS (lpj=9052160)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
CPU: Testing write buffer coherency: ok
Setting up static identity map for 0x2000000 - 0x2000000
VFP support v0.3: implementor 41 architecture 2 part 30 variant 7 rev 4
clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
NET: Registered protocol family 16
DMA: preallocated 256 KiB pool for atomic coherent allocations
L4IRQ: set irq type of 60 to 4
------------[ cut here ]------------
WARNING: CPU: 0 PID: 1 at /home/yiyang/Workplace/Microkernel/l4re/src/l4linux/kernel/irq/irqdomain.c:342 irq_domain_associate+0x13c/0x1c8
error: hwirq 0x75 is too large for L4-icu
Modules linked in:
CPU: 0 PID: 1 Comm: swapper Not tainted 4.7.0-l4 #9
Hardware name: L4Linux (DT)
[<0200d5bc>] (unwind_backtrace) from [<02005a54>] (show_stack+0x10/0x14)
[<02005a54>] (show_stack) from [<0201f8f4>] (__warn+0xe4/0xfc)
[<0201f8f4>] (__warn) from [<0201f944>] (warn_slowpath_fmt+0x38/0x48)
[<0201f944>] (warn_slowpath_fmt) from [<0204eca8>] (irq_domain_associate+0x13c/0x1c8)
[<0204eca8>] (irq_domain_associate) from [<0204f260>] (irq_create_mapping+0x60/0xc4)
[<0204f260>] (irq_create_mapping) from [<0204f3a0>] (irq_create_fwspec_mapping+0xdc/0x17c)
[<0204f3a0>] (irq_create_fwspec_mapping) from [<0204f494>] (irq_create_of_mapping+0x54/0x5c)
[<0204f494>] (irq_create_of_mapping) from [<0221b320>] (irq_of_parse_and_map+0x24/0x2c)
[<0221b320>] (irq_of_parse_and_map) from [<0221b340>] (of_irq_to_resource+0x18/0xbc)
[<0221b340>] (of_irq_to_resource) from [<0221b420>] (of_irq_to_resource_table+0x3c/0x54)
[<0221b420>] (of_irq_to_resource_table) from [<02219104>] (of_device_alloc+0xf8/0x168)
[<02219104>] (of_device_alloc) from [<022191cc>] (of_platform_device_create_pdata+0x58/0xdc)
[<022191cc>] (of_platform_device_create_pdata) from [<02219348>] (of_platform_bus_create+0xec/0x378)
[<02219348>] (of_platform_bus_create) from [<022193a4>] (of_platform_bus_create+0x148/0x378)
[<022193a4>] (of_platform_bus_create) from [<02219704>] (of_platform_populate+0x5c/0xc0)
[<02219704>] (of_platform_populate) from [<023c340c>] (customize_machine+0x20/0x40)
[<023c340c>] (customize_machine) from [<02000494>] (do_one_initcall+0x44/0x174)
[<02000494>] (do_one_initcall) from [<023bf9f8>] (kernel_init_freeable+0x130/0x1c0)
[<023bf9f8>] (kernel_init_freeable) from [<022c6684>] (kernel_init+0xc/0xec)
[<022c6684>] (kernel_init) from [<020080c0>] (ret_from_fork+0x14/0x20)
[<020080c0>] (ret_from_fork) from [<00000000>] (  (null))
---[ end trace 3e08f811161fcc2c ]---
Failed to create "l4x" debugfs directory: 1
pps_core: LinuxPPS API ver. 1 registered
pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti at linux.it>
PTP clock support registered
l4vbus: is running
L4IRQ: set irq type of 212 to 1
l4vbus-root :l4vbus-root:0: added vbus root driver
clocksource: Switched to clocksource l4kipclk
NET: Registered protocol family 2
TCP established hash table entries: 1024 (order: 0, 4096 bytes)
TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
TCP: Hash tables configured (established 1024 bind 1024)
UDP hash table entries: 256 (order: 0, 4096 bytes)
UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
NET: Registered protocol family 1
Trying to unpack rootfs image as initramfs...
rootfs image is not initramfs (junk in compressed archive); looks like an initrd
INITRD: Freeing memory.
l4x: Checks passed.
NetWinder Floating Point Emulator V0.97 (double precision)
futex hash table entries: 256 (order: -1, 3072 bytes)
workingset: timestamp_bits=29 max_order=14 bucket_order=0
io scheduler noop registered
io scheduler deadline registered
io scheduler cfq registered (default)
l4fb.0: looking for capability 'fb' as goos session
l4fb.0: init failed err=-2
could not allocate fb device: fb
L4 serial driver
serial-ttyLv.0: ttyLv0 at MMIO 0x1 (irq = 211, base_baud = 230400) is a L4-vcon
l4ser_shm: L4 shared mem serial driver
l4cdds: No name given, not starting.
brd: module loaded
l4bdds: No name given, not starting.
------------[ cut here ]------------
WARNING: CPU: 0 PID: 1 at /home/yiyang/Workplace/Microkernel/l4re/src/l4linux/kernel/irq/irqdomain.c:342 irq_domain_associate+0x13c/0x1c8
error: hwirq 0x75 is too large for L4-icu
Modules linked in:
CPU: 0 PID: 1 Comm: swapper Tainted: G        W       4.7.0-l4 #9
Hardware name: L4Linux (DT)
[<0200d5bc>] (unwind_backtrace) from [<02005a54>] (show_stack+0x10/0x14)
[<02005a54>] (show_stack) from [<0201f8f4>] (__warn+0xe4/0xfc)
[<0201f8f4>] (__warn) from [<0201f944>] (warn_slowpath_fmt+0x38/0x48)
[<0201f944>] (warn_slowpath_fmt) from [<0204eca8>] (irq_domain_associate+0x13c/0x1c8)
[<0204eca8>] (irq_domain_associate) from [<0204f260>] (irq_create_mapping+0x60/0xc4)
[<0204f260>] (irq_create_mapping) from [<0204f3a0>] (irq_create_fwspec_mapping+0xdc/0x17c)
[<0204f3a0>] (irq_create_fwspec_mapping) from [<0204f494>] (irq_create_of_mapping+0x54/0x5c)
[<0204f494>] (irq_create_of_mapping) from [<0221b490>] (of_irq_get+0x58/0x68)
[<0221b490>] (of_irq_get) from [<021ddc98>] (platform_get_irq_byname+0x1c/0x58)
[<021ddc98>] (platform_get_irq_byname) from [<022007b4>] (stmmac_get_platform_resources+0x28/0xdc)
[<022007b4>] (stmmac_get_platform_resources) from [<022009ec>] (sun7i_gmac_probe+0x14/0x138)
[<022009ec>] (sun7i_gmac_probe) from [<021dd884>] (platform_drv_probe+0x4c/0xb0)
[<021dd884>] (platform_drv_probe) from [<021dc0ac>] (driver_probe_device+0x224/0x2b4)
[<021dc0ac>] (driver_probe_device) from [<021dc1f4>] (__driver_attach+0xb8/0xbc)
[<021dc1f4>] (__driver_attach) from [<021da3f0>] (bus_for_each_dev+0x68/0x9c)
[<021da3f0>] (bus_for_each_dev) from [<021db534>] (bus_add_driver+0x1a0/0x218)
[<021db534>] (bus_add_driver) from [<021dc8e8>] (driver_register+0x78/0xf8)
[<021dc8e8>] (driver_register) from [<02000494>] (do_one_initcall+0x44/0x174)
[<02000494>] (do_one_initcall) from [<023bf9f8>] (kernel_init_freeable+0x130/0x1c0)
[<023bf9f8>] (kernel_init_freeable) from [<022c6684>] (kernel_init+0xc/0xec)
[<022c6684>] (kernel_init) from [<020080c0>] (ret_from_fork+0x14/0x20)
[<020080c0>] (ret_from_fork) from [<00000000>] (  (null))
---[ end trace 3e08f811161fcc2d ]---
IO      | new iomem region: p=1c00000 v=400000 s=400000 (bmb=0x27628)
__l4x_ioremap: Mapping physaddr 01c50000 [0x10000 Bytes, 01c50000+010000] to 00002000+000000
sun7i-dwmac 1c50000.ethernet: could not get tx clock
mousedev: PS/2 mouse device common for all mice
NET: Registered protocol family 17
------------[ cut here ]------------
WARNING: CPU: 0 PID: 6 at /home/yiyang/Workplace/Microkernel/l4re/src/l4linux/kernel/irq/irqdomain.c:342 irq_domain_associate+0x13c/0x1c8
error: hwirq 0x75 is too large for L4-icu
Modules linked in:
CPU: 0 PID: 6 Comm: kworker/u2:0 Tainted: G        W       4.7.0-l4 #9
Hardware name: L4Linux (DT)
Workqueue: deferwq deferred_probe_work_func
[<0200d5bc>] (unwind_backtrace) from [<02005a54>] (show_stack+0x10/0x14)
[<02005a54>] (show_stack) from [<0201f8f4>] (__warn+0xe4/0xfc)
[<0201f8f4>] (__warn) from [<0201f944>] (warn_slowpath_fmt+0x38/0x48)
[<0201f944>] (warn_slowpath_fmt) from [<0204eca8>] (irq_domain_associate+0x13c/0x1c8)
[<0204eca8>] (irq_domain_associate) from [<0204f260>] (irq_create_mapping+0x60/0xc4)
[<0204f260>] (irq_create_mapping) from [<0204f3a0>] (irq_create_fwspec_mapping+0xdc/0x17c)
[<0204f3a0>] (irq_create_fwspec_mapping) from [<0204f494>] (irq_create_of_mapping+0x54/0x5c)
[<0204f494>] (irq_create_of_mapping) from [<0221b490>] (of_irq_get+0x58/0x68)
[<0221b490>] (of_irq_get) from [<021ddc98>] (platform_get_irq_byname+0x1c/0x58)
[<021ddc98>] (platform_get_irq_byname) from [<022007b4>] (stmmac_get_platform_resources+0x28/0xdc)
[<022007b4>] (stmmac_get_platform_resources) from [<022009ec>] (sun7i_gmac_probe+0x14/0x138)
[<022009ec>] (sun7i_gmac_probe) from [<021dd884>] (platform_drv_probe+0x4c/0xb0)
[<021dd884>] (platform_drv_probe) from [<021dc0ac>] (driver_probe_device+0x224/0x2b4)
[<021dc0ac>] (driver_probe_device) from [<021da498>] (bus_for_each_drv+0x60/0x94)
[<021da498>] (bus_for_each_drv) from [<021dbda8>] (__device_attach+0xb0/0x114)
[<021dbda8>] (__device_attach) from [<021db288>] (bus_probe_device+0x84/0x8c)
[<021db288>] (bus_probe_device) from [<021db718>] (deferred_probe_work_func+0x68/0x94)
[<021db718>] (deferred_probe_work_func) from [<02031a64>] (process_one_work+0x11c/0x3dc)
[<02031a64>] (process_one_work) from [<02031d5c>] (worker_thread+0x38/0x548)
[<02031d5c>] (worker_thread) from [<02036934>] (kthread+0xd4/0xec)
[<02036934>] (kthread) from [<020080c0>] (ret_from_fork+0x14/0x20)
[<020080c0>] (ret_from_fork) from [<00000000>] (  (null))
---[ end trace 3e08f811161fcc2f ]---
__l4x_ioremap: Mapping physaddr 01c50000 [0x10000 Bytes, 01c50000+010000] to 00002000+000000
sun7i-dwmac 1c50000.ethernet: could not get tx clock
L4IRQ: set irq type of 211 to 1
RAMDISK: ext2 filesystem found at block 0
RAMDISK: Loading 3072KiB [1 disk] into ram disk... done.
EXT4-fs (ram0): couldn't mount as ext3 due to feature incompatibilities
EXT4-fs (ram0): mounting ext2 file system using the ext4 subsystem
EXT4-fs (ram0): mounted filesystem without journal. Opts: (null)
VFS: Mounted root (ext2 filesystem) on device 1:0.
Freeing unused kernel memory: 164K (023bf000 - 023e8000)
This architecture does not have kernel memory protection.

Please press Enter to activate this console.


----------  boot log end  ----------

________________________________
From: Manolis Ragkousis <manolis837 at gmail.com>
Sent: 23 September 2017 10:12
To: l4-hackers at os.inf.tu-dresden.de
Cc: Yiyang Su
Subject: Re: Add network device to L4Linux

Hello everyone,

Yesterday with Yang we found why adding the device tree caused the
L4linux boot to fail on Cubietruck with "failed to get physical address
for 2000000". I am sharing this here for future references in case
anyone needs it.

Yang was using the sun7i-a20-cubietruck.dts [1] device tree which is
normally supposed to be used by Linux running on bare-metal arm. In
L4Linux's case it's running on top of L4 which controls what L4linux can
see. As a result of using sun7i-a20-cubietruck.dts it tries to map a
physical address which it's not allowed to.

Using what Matthias described in [2], one needs to create a new device
tree based on the simple.dts inside l4linux-source/arch/l4/boot/dts/ and
add the information about the ethernet device and its dependencies
there. Also don't forget to write the io configuration for those devices.

Another mail from Matthias which serves as a really nice explanation of
the process is [3].

Thank you,
Manolis

[1]
http://elixir.free-electrons.com/u-boot/latest/source/arch/arm/dts/sun7i-a20-cubietruck.dts
u-boot/arch/arm/dts/sun7i-a20-cubietruck.dts - Elixir - Free Electrons<http://elixir.free-electrons.com/u-boot/latest/source/arch/arm/dts/sun7i-a20-cubietruck.dts>
elixir.free-electrons.com
Elixir Cross Referencer


[2] https://os.inf.tu-dresden.de/pipermail/l4-hackers/2016/007747.html
[3] https://os.inf.tu-dresden.de/pipermail/l4-hackers/2017/008069.html
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