Linux boot stuck at bootcmd execution

[Heomere]

Is there an existing CVA6-SDK task for this?

• I have searched the existing task issues

Task Description

Hello,

I am trying to boot Linux on the cv32a6 running on the Nexys video target which has been recently added to the cva6 support. I followed the instructions from the Readme to build my image using make images and flashing the results on a 4Gb SD card using sudo -E make flash-sdcard SDDEVICE=<my_device>.
The OpenSBI firmware and the u-boot seem to execute properly but the boot process gets stuck at the execution of the bootcmd of u-boot to get the kernel. Here is what I get when booting :

Hello World!
init SPI
status: 0x0000000000000025
status: 0x0000000000000025
SPI initialized!
initializing SD...
SD command cmd0         response : 01
SD command cmd55        response : 01
SD command cmd41        response : 01
SD command cmd55        response : 01
SD command cmd41        response : 01
SD command cmd55        response : 01
SD command cmd41        response : 01
SD command cmd55        response : 01
SD command cmd41        response : 01
SD command cmd55        response : 01
SD command cmd41        response : 00
sd initialized!
gpt partition table header:
        signature:      5452415020494645
        revision:       00010000
        size:           0000005C
        crc_header:     A1C813DD
        reserved:       00000000
        current lba:    0000000000000001
        backup lda:     0000000000747FFF
        partition entries lba:          0000000000000002
        number partition entries:       00000080
        size partition entries:         00000080
gpt partition entry 00
        partition type guid:    D5F7127456A1134B81DC867174929325
        partition guid:         EE9DD9C1C20E7C4689F3DD39521A8723
        first lba:      0000000000000800
        last lba:       0000000000002B6B
        attributes:     0000000000000000
        name:   000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
gpt partition entry 01
        partition type guid:    AF3DC60F838472478E793D69D8477DE4
        partition guid:         37BB12CA47E46A4C9406CE014A04194E
        first lba:      0000000000100000
        last lba:       0000000000747FDE
        attributes:     0000000000000000
        name:   000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
gpt partition entry 02
        partition type guid:    00000000000000000000000000000000
        partition guid:         00000000000000000000000000000000
        first lba:      0000000000000000
        last lba:       0000000000000000
        attributes:     0000000000000000
        name:   000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
gpt partition entry 03
        partition type guid:    00000000000000000000000000000000
        partition guid:         00000000000000000000000000000000
        first lba:      0000000000000000
        last lba:       0000000000000000
        attributes:     0000000000000000
        name:   000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
copying boot image ......... done!

OpenSBI v0.9
   ____                    _____ ____ _____
  / __ \                  / ____|  _ \_   _|
 | |  | |_ __   ___ _ __ | (___ | |_) || |
 | |  | | '_ \ / _ \ '_ \ \___ \|  _ < | |
 | |__| | |_) |  __/ | | |____) | |_) || |_
  \____/| .__/ \___|_| |_|_____/|____/_____|
        | |
        |_|

Platform Name             : ARIANE RISC-V
Platform Features         : medeleg
Platform HART Count       : 1
Platform IPI Device       : aclint-mswi
Platform Timer Device     : aclint-mtimer @ 1000000Hz
Platform Console Device   : uart8250
Platform HSM Device       : ---
Platform Reboot Device    : ---
Platform Shutdown Device  : ---
Firmware Base             : 0x80000000
Firmware Size             : 196 KB
Runtime SBI Version       : 0.3

Domain0 Name              : root
Domain0 Boot HART         : 0
Domain0 HARTs             : 0*
Domain0 Region00          : 0x02008000-0x0200bfff (I)
Domain0 Region01          : 0x02000000-0x02007fff (I)
Domain0 Region02          : 0x80000000-0x8003ffff ()
Domain0 Region03          : 0x00000000-0xffffffff (R,W,X)
Domain0 Next Address      : 0x80400000
Domain0 Next Arg1         : 0x82200000
Domain0 Next Mode         : S-mode
Domain0 SysReset          : yes

Boot HART ID              : 0
Boot HART Domain          : root
Boot HART ISA             : rv32imasu
Boot HART Features        : scounteren,mcounteren
Boot HART PMP Count       : 0
Boot HART PMP Granularity : 0
Boot HART PMP Address Bits: 0
Boot HART MHPM Count      : 0
Boot HART MIDELEG         : 0x00000222
Boot HART MEDELEG         : 0x0000b109


U-Boot 2021.07-rc4-g920075ecfa-dirty (Jun 04 2024 - 10:01:34 +0200)

CPU:   rv32ima
Model: eth,ariane-bare
DRAM:  128 MiB
MMC:   xps-spi@20000000:mmc@0: 0
Loading Environment from nowhere... OK
In:    uart@10000000
Out:   uart@10000000
Err:   uart@10000000
Net:   No ethernet found.
Hit any key to stop autoboot:  0

When the countdown hits 0, it then hang there without output message. This corresponds to the execution of the boot command configured in u-boot : CONFIG_BOOTCOMMAND="mmc info; mmc read 90000000 100000 7000; setenv fdt_high 0xffffffff; bootm 90000000 - $(fdtcontroladdr)". I observe the same behavior if I manually run mmc command which try to access the mmc device (e.g mmc info, mmc dev, mmc read, ...) : the system gets stuck without error message.

In order to run on the new target, I had to add/modify a few files in the configuration :

• added u-boot/configs/openhwgroup_cv32a6_nexys_defconfig :

CONFIG_RISCV=y
CONFIG_DEFAULT_DEVICE_TREE="cv32a6_nexys"
CONFIG_TARGET_OPENHWGROUP_CVA6_GENESYSII=y
CONFIG_RISCV_SMODE=y
# CONFIG_RISCV_ISA_C is not set
CONFIG_OF_BOARD_SETUP=y
CONFIG_BOOTDELAY=5
CONFIG_USE_BOOTCOMMAND=y
CONFIG_BOOTCOMMAND="mmc info; mmc read 90000000 100000 7000; setenv fdt_high 0xffffffff; bootm 90000000 - $(fdtcontroladdr)"
CONFIG_DISPLAY_CPUINFO=y
CONFIG_SPL_SPI_FLASH_MTD=y
CONFIG_CMD_GPT=y
# CONFIG_RANDOM_UUID is not set
CONFIG_CMD_MMC=y
CONFIG_CMD_MTD=y
CONFIG_CMD_PART=y
CONFIG_OF_EMBED=y
CONFIG_MMC=y
# CONFIG_MMC_WRITE is not set
CONFIG_MMC_SPI=y
CONFIG_DM_MTD=y
CONFIG_MTD_SPI_NAND=y
CONFIG_SPI_FLASH_ATMEL=y
CONFIG_SPI_FLASH_EON=y
CONFIG_SPI_FLASH_GIGADEVICE=y
CONFIG_SPI_FLASH_ISSI=y
CONFIG_SPI_FLASH_MACRONIX=y
CONFIG_SPI_FLASH_SPANSION=y
CONFIG_SPI_FLASH_STMICRO=y
CONFIG_SPI_FLASH_SST=y
CONFIG_SPI_FLASH_WINBOND=y
CONFIG_SPI_FLASH_XMC=y
# CONFIG_SPI_FLASH_USE_4K_SECTORS is not set
CONFIG_SPI_FLASH_MTD=y
CONFIG_SYS_NS16550=y
CONFIG_SPI=y
CONFIG_XILINX_SPI=y

CONFIG_BAUDRATE=57600

CONFIG_DISPLAY_BOARDINFO=y

Changed uboot baudrate to match the baudrate required by the nexys uart.
Changed device tree target (see next point)

• added u-boot/arch/riscv/dts/cv32a6_nexys.dts :

/dts-v1/;

/ {
  #address-cells = <1>;
  #size-cells = <1>;
  compatible = "eth,ariane-bare-dev";
  model = "eth,ariane-bare";
  chosen {
    stdout-path = "/soc/uart@10000000:57600";
  };
  cpus {
    #address-cells = <1>;
    #size-cells = <0>;
    timebase-frequency = <12500000 >;
    CPU0: cpu@0 {
      clock-frequency = <25000000 >;
      device_type = "cpu";
      reg = <0>;
      status = "okay";
      compatible = "eth, ariane", "riscv";
      riscv,isa = "rv32ima";
      mmu-type = "riscv,sv32";
      tlb-split;
      // HLIC - hart local interrupt controller
      CPU0_intc: interrupt-controller {
        #interrupt-cells = <1>;
        interrupt-controller;
        compatible = "riscv,cpu-intc";
      };
    };
  };
  memory@80000000 {
    device_type = "memory";
    reg = <0x80000000 0x08000000 >;
  };
  leds {
    compatible = "gpio-leds";
    heartbeat-led {
      gpios = <&xlnx_gpio 1 0>;
      linux,default-trigger = "heartbeat";
      retain-state-suspended;
    };
  };
  L26: soc {
    #address-cells = <1>;
    #size-cells = <1>;
    compatible = "eth,ariane-bare-soc", "simple-bus";
    ranges;
    clint@2000000 {
      compatible = "riscv,clint0";
      interrupts-extended = <&CPU0_intc 3 &CPU0_intc 7>;
      reg = <0x2000000 0xc0000>;
      reg-names = "control";
    };
    PLIC0: interrupt-controller@c000000 {
      #address-cells = <0>;
      #interrupt-cells = <1>;
      compatible = "riscv,plic0";
      interrupt-controller;
      interrupts-extended = <&CPU0_intc 11 &CPU0_intc 9>;
      reg = <0xc000000 0x4000000>;
      riscv,max-priority = <7>;
      riscv,ndev = <30>;
    };
    // Specifying the interrupt controller in the devicetree is not necessary.
    // Furthermore, the IRQ 65535 will cause a `hwirq 0xffff is too large` during
    // Linux boot (occured with mainline linux 5.14.0).
    // debug-controller@0 {
    //   compatible = "riscv,debug-013";
    //   interrupts-extended = <&CPU0_intc 65535>;
    //   reg = <0x0 0x1000>;
    //   reg-names = "control";
    // };
    uart@10000000 {
      compatible = "ns16550a";
      reg = < 0x10000000 0x1000>;
      clock-frequency = <25000000 >;
      current-speed = <57600>;
      interrupt-parent = <&PLIC0>;
      interrupts = <1>;
      reg-shift = <2>; // regs are spaced on 32 bit boundary
      reg-io-width = <4>; // only 32-bit access are supported
    };
    timer@18000000 {
      compatible = "pulp,apb_timer";
      interrupts = <0x00000004 0x00000005 0x00000006 0x00000007>;
      reg = <0x18000000 0x00001000>;
      interrupt-parent = <&PLIC0>;
      reg-names = "control";
    };
    xps-spi@20000000 {
      compatible = "xlnx,xps-spi-2.00.b", "xlnx,xps-spi-2.00.a";
      #address-cells = <1>;
      #size-cells = <0>;
      interrupt-parent = <&PLIC0>;
      interrupts = < 2 2 >;
      reg = < 0x20000000 0x1000 >;
      xlnx,family = "kintex7";
      xlnx,fifo-exist = <0x1>;
      xlnx,num-ss-bits = <0x1>;
      xlnx,num-transfer-bits = <0x8>;
      xlnx,sck-ratio = <0x4>;

      mmc@0 {
        compatible = "mmc-spi-slot";
        reg = <0>;
        spi-max-frequency = <12500000>;
        voltage-ranges = <3300 3300>;
        disable-wp;
      };

      // mmc-slot@0 {
      //   compatible = "fsl,mpc8323rdb-mmc-slot", "mmc-spi-slot";
      //   reg = <0>;  //Chip select 0
      //   spi-max-frequency = <12500000>;
      //   voltage-ranges = <3300 3300>;
      //   //interrupts = < 2 2 >;
      //   //interrupt-parent = <&PLIC0>;
      // };
    };
    eth: lowrisc-eth@30000000 {
      compatible = "lowrisc-eth";
      device_type = "network";
      interrupt-parent = <&PLIC0>;
      interrupts = <3 0>;
      local-mac-address = [00 18 3e 02 e3 7f]; // This needs to change if more than one GenesysII on a VLAN
      reg = <0x30000000 0x8000>;
    };
    xlnx_gpio: gpio@40000000 {
      #gpio-cells = <2>;
      compatible = "xlnx,xps-gpio-1.00.a";
      gpio-controller ;
      reg = <0x40000000 0x10000 >;
      xlnx,all-inputs = <0x0>;
      xlnx,all-inputs-2 = <0x0>;
      xlnx,dout-default = <0x0>;
      xlnx,dout-default-2 = <0x0>;
      xlnx,gpio-width = <0x8>;
      xlnx,gpio2-width = <0x8>;
      xlnx,interrupt-present = <0x0>;
      xlnx,is-dual = <0x1>;
      xlnx,tri-default = <0xffffffff>;
      xlnx,tri-default-2 = <0xffffffff>;
    };
  };
};
// delete ethernet device if disabled
/delete-node/ &eth; // DELETE_ETH

Device tree built from https://github.com/openhwgroup/cva6/tree/master/corev_apu/fpga/src/bootrom

• Deactivation of Ethernet configuration based on Add support for Nexys Video board cva6#1925 (comment)

I wonder what may be the issue? Where should I look at?

Thank a lot in advance !

Description of Done

I am sorry, I used the "task" template where I should have used of a blank issue.