/dts-v1/; / { #address-cells = <2>; #size-cells = <2>; /* 64 bits memory addresses */ compatible = "riscv,rv64i"; model = "Barcelona Supercomputing Center - Lagarto Ox (NixOS)"; aliases { serial0 = &uart_console; // ttyS0 // serial1 = &uart_testing; // ttyS1 }; // chosen { // bootargs = "earlyprintk ignore_loglevel earlycon=sbi console=hvc0 root=/dev/pmem0p1 ro init=/bin/bash"; // }; cpus { #address-cells = <1>; #size-cells = <0>; // The RTC timer is clocked at the CPU frequency / 1525, so // around 32786.88 Hz timebase-frequency = <32786>; CPU0: cpu@0 { clock-frequency = <50000000>; /* 50 MHz */ device_type = "cpu"; reg = <0>; status = "okay"; compatible = "riscv"; riscv,isa = "rv64imafd"; mmu-type = "riscv,sv39"; tlb-split; // OpenPiton+Ariane Platform // L1I Size / Assoc: 16 kB / 4 // L1D Size / Assoc: 32 kB / 4 // L15 Size / Assoc: 128 kB / 8 // L2 Size / Assoc: 256 kB / 4 // L15/L1D Cacheline size 64 i-cache-block-size = <64>; // Guess i-cache-sets = <4>; i-cache-size = <16384>; i-tlb-sets = <1>; // Guess i-tlb-size = <32>; // Guess d-cache-block-size = <64>; // Guess d-cache-sets = <4>; d-cache-size = <32768>; d-tlb-sets = <1>; // Guess d-tlb-size = <32>; // Guess phandle = <0x00000004>; /* Hart-Level Interrupt Controller: Every interrupt is * ultimately routed through a hart's HLIC before it * interrupts that hart. */ HLIC0: interrupt-controller { #interrupt-cells = <1>; interrupt-controller; /* Receives interrupts */ compatible = "riscv,cpu-intc"; phandle = <0x5>; }; }; cpu-map { cluster0 { core0 { cpu = <&CPU0>; }; }; }; }; /* Memory layout: * * [0x0_6000_0000, 0x0_7000_0000) -> DMA pool (256 MiB) * [0x0_7000_0000, 0x0_8000_0000) -> DMA pool (256 MiB) * [0x0_8000_0000, 0x0_b000_0000) -> RAM memory (768 MiB) * [0x0_b000_0000, 0x0_c000_0000) -> Broken? (256 MiB) * [0x0_c000_0000, 0x1_0000_0000) -> Empty (1024 MiB) * [0x1_0000_0000, 0x1_c000_0000) -> PMEM (3072 MiB) * [0x1_c000_0000, 0x2_8000_0000) -> Empty (3072 MiB) */ memory@80000000 { device_type = "memory"; reg = <0x0 0x80000000 0x0 0x30000000>; }; reserved-memory { #address-cells = <2>; /* Starting address and size */ #size-cells = <2>; /* 64 bits memory addresses */ ranges; eth_pool: dma_pool@60000000 { reg = <0x0 0x60000000 0x0 0x10000000>; compatible = "shared-dma-pool"; }; onic_pool: dma_pool@70000000 { reg = <0x0 0x70000000 0x0 0x10000000>; compatible = "shared-dma-pool"; }; }; dma_clk: dma_clk { compatible = "fixed-clock"; #clock-cells = <0x00000000>; clock-frequency = <0x09502f90>; phandle = <0x00000002>; }; pmem@100000000 { /* volatile; This property indicates that this region is * actually backed by non-persistent memory. This lets the OS * know that it may skip the cache flushes required to ensure * data is made persistent after a write. */ volatile; compatible = "pmem-region"; reg = <0x1 0x00000000 0x0 0xc0000000>; }; soc { #address-cells = <0x00000002>; #size-cells = <0x00000002>; compatible = "BSC,Lagarto-ox-soc", "simple-bus"; ranges; /* For bitstream e97dd7b2-397f-11ef-abe0-bbd201a5a630 with two * consoles */ /* The serial for the kernel console */ uart_console: serial@40001000 { compatible = "ns16550"; reg = <0x0 0x40001000 0x0 0x1000>; reg-shift = <2>; /* No interrupts for this UART, use console=hvc0 */ /* This clock is the SERIAL_CLK */ clock-frequency = <50000000>; current-speed = <115200>; status = "okay"; }; /* The serial for interrupt tests */ uart_testing: serial@40003000 { compatible = "ns16550"; reg = <0x0 0x40003000 0x0 0x1000>; reg-shift = <2>; /* Output interrupt 1 (the first one) */ interrupts = <1>; interrupt-parent = <&PLIC>; clock-frequency = <50000000>; current-speed = <115200>; status = "okay"; }; ethernet0 { xlnx,rxmem = <0x000005f2>; carv,mtu = <0x000005dc>; carv,no-mac; device_type = "network"; local-mac-address = [02 05 00 01 00 05]; axistream-connected = <&axi_dma>; compatible = "xlnx,xxv-ethernet-1.0-carv"; memory-region = <ð_pool>; }; axi_dma: dma@40400000 { xlnx,include-dre; #dma-cells = <0x00000001>; compatible = "xlnx,axi-dma-1.00.a"; clock-names = "s_axi_lite_aclk", "m_axi_mm2s_aclk", "m_axi_s2mm_aclk", "m_axi_sg_aclk"; clocks = <&dma_clk>, <&dma_clk>, <&dma_clk>, <&dma_clk>; reg = <0x00000000 0x40400000 0x00000000 0x00400000>; interrupt-names = "mm2s_introut", "s2mm_introut"; interrupt-parent = <&PLIC>; interrupts = <2 3>; xlnx,addrwidth = <0x28>; xlnx,include-sg; xlnx,sg-length-width = <0x17>; dma-channel@40400000 { compatible = "xlnx,axi-dma-mm2s-channel"; dma-channels = <0>; interrupts = <2>; xlnx,datawidth = <0x40>; xlnx,device-id = <0x0>; xlnx,include-dre; }; dma-channel@40400030 { compatible = "xlnx,axi-dma-s2mm-channel"; dma-channels = <1>; interrupts = <3>; xlnx,datawidth = <0x40>; xlnx,device-id = <0x0>; xlnx,include-dre; }; }; /* Platform-Level Interrupt Controller: Delivers interrupts to * HARTs. */ PLIC: plic@40800000 { compatible = "riscv,plic0"; interrupt-controller; /* Receives interrupts */ #address-cells = <0>; #interrupt-cells = <1>; /* Sends interrupts to HART interrupt controllers */ /* * From: linux-6.6.1/arch/riscv/include/asm/csr.h * * Interrupt causes (minus the high bit) * #define IRQ_S_SOFT 1 * #define IRQ_VS_SOFT 2 * #define IRQ_M_SOFT 3 * #define IRQ_S_TIMER 5 * #define IRQ_VS_TIMER 6 * #define IRQ_M_TIMER 7 * #define IRQ_S_EXT 9 * #define IRQ_VS_EXT 10 * #define IRQ_M_EXT 11 * #define IRQ_S_GEXT 12 * #define IRQ_PMU_OVF 13 * #define IRQ_LOCAL_MAX (IRQ_PMU_OVF + 1) * #define IRQ_LOCAL_MASK GENMASK((IRQ_LOCAL_MAX - 1), 0) */ interrupts-extended = <&HLIC0 11>, <&HLIC0 9>; reg = < 0x0 0x40800000 0x0 0x00400000>; riscv,ndev = <4>; //riscv,max-priority = <0x7>; phandle = <0x3>; }; /* Core Local Interruptor: It directly connects to the timer and * inter-processor interrupt lines of various HARTs (or CPUs) so * RISC-V per-HART (or per-CPU) local interrupt controller is * the parent interrupt controller for CLINT device. The clock * frequency of CLINT is specified via "timebase-frequency" DT * property of "/cpus" DT node. The "timebase-frequency" DT * property is described in * Documentation/devicetree/bindings/riscv/cpus.yaml */ clint: clint@40100000 { reg = <0x0 0x40100000 0x0 0x00010000>; reg-names = "control"; interrupts-extended = <&HLIC0 3>, <&HLIC0 7>; compatible = "riscv,clint0"; }; // aux_timer: clint@40010000 { // reg = <0x0 0x40010000 0x0 0x00010000>; // reg-names = "control"; // interrupts = <4>; /* PLIC input source 4 */ // interrupt-parent = <&PLIC>; // compatible = "riscv,clint0"; // }; // clint: clint@40002000 { // /* MTIME and MTIMECMP address and size pairs */ // reg = <0x0 0x40002000 0x0 0x8>, <0x0 0x40002008 0x0 0x8>; // interrupts-extended = <&HLIC0 3>, <&HLIC0 7>; // /*<&CPU0 0x3>, <&CPU0 0x7>,*/ // /*<&onic_pool 0x3>, <&onic_pool 0x7>,*/ // /*<&SERIAL 0x3>, <&SERIAL 0x7>*/ // // /* Allows using the "generic" platform in OpenSBI. */ // compatible = "riscv,aclint-mtimer"; // }; /* Guesswork: There must be a timer at 0x40170000 as it is * initialized in OpenSBI. It seems to drive the console. */ //SERIAL_CLK: timer@40170000 { // clock-frequency = <100000000>; // clocks = <&clk_bus_0>; // compatible = "xlnx,xps-timer-1.00.a"; // interrupt-parent = <&axi_intc_1>; // interrupts = <2 2>; // reg = <0x41c00000 0x10000>; // xlnx,count-width = <0x20>; // xlnx,one-timer-only = <0x0>; //}; }; };