SMP Linux on two core

[Alexmojito]

Hi
I want to realize the SMP Linux on two core ,so how to configure the ariane.dts,and i dont kown how do this interrupts of Peripherals connect with PLIC, the interrupt number is how to define?

/dts-v1/;

/ {
#address-cells = <2>;
#size-cells = <2>;
compatible = "eth,ariane-bare-dev";
model = "eth,ariane-bare";
chosen {
stdout-path = "/soc/uart@10000000:115200";
};
cpus {
#address-cells = <1>;
#size-cells = <0>;
timebase-frequency = <25000000>; // 25 MHz
CPU0: cpu@0 {
clock-frequency = <50000000>; // 50 MHz
device_type = "cpu";
reg = <0>;
status = "okay";
compatible = "eth, ariane", "riscv";
riscv,isa = "rv64imafdc";
mmu-type = "riscv,sv39";
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 = <0x0 0x80000000 0x0 0x40000000>;
};
leds {
compatible = "gpio-leds";
heartbeat-led {
gpios = <&xlnx_gpio 1 0>;
linux,default-trigger = "heartbeat";
retain-state-suspended;
};
};
L26: soc {
#address-cells = <2>;
#size-cells = <2>;
compatible = "eth,ariane-bare-soc", "simple-bus";
ranges;
clint@2000000 {
compatible = "riscv,clint0";
interrupts-extended = <&CPU0_intc 3 &CPU0_intc 7>;
reg = <0x0 0x2000000 0x0 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 = <0x0 0xc000000 0x0 0x4000000>;
riscv,max-priority = <7>;
riscv,ndev = <30>;
};
debug-controller@0 {
compatible = "riscv,debug-013";
interrupts-extended = <&CPU0_intc 65535>;
reg = <0x0 0x0 0x0 0x1000>;
reg-names = "control";
};
uart@10000000 {
compatible = "ns16750";
reg = <0x0 0x10000000 0x0 0x1000>;
clock-frequency = <50000000>;
current-speed = <115200>;
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 = <0x00000000 0x18000000 0x00000000 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 = < 0x0 0x20000000 0x0 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 = <0x0 0x30000000 0x0 0x8000>;
};
xlnx_gpio: gpio@40000000 {
  #gpio-cells = <2>;
  compatible = "xlnx,xps-gpio-1.00.a";
  gpio-controller ;
  reg = <0x0 0x40000000 0x0 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>;
};

};
};

[Jbalkind]

Our device tree is automatically generated for the correct number of cores based on what you compile. You shouldn't need to manually edit the device tree to change the core count.

I'm not quite sure of your question?