RVOS/platform.h at master · GartonChan/RVOS · GitHub

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#ifndef __PLATFORM_H__
#define __PLATFORM_H__

/* ---------- For different target platforms ---------- */

#define CONFIG_SYSCALL

/*
 * QEMU RISC-V Virt machine with 16550a UART and VirtIO MMIO
 */

/*
 * maximum number of CPUs
 * see https://github.com/qemu/qemu/blob/master/include/hw/riscv/virt.h
 * #define VIRT_CPUS_MAX 8
 */
#define MAXNUM_CPU 8

/*
 * MemoryMap
 * see https://github.com/qemu/qemu/blob/master/hw/riscv/virt.c, virt_memmap[]
 * 0x00001000 -- boot ROM, provided by qemu
 * 0x02000000 -- CLINT
 * 0x0C000000 -- PLIC
 * 0x10000000 -- UART0
 * 0x10001000 -- virtio disk
 * 0x80000000 -- boot ROM jumps here in machine mode, where we load our kernel
 */
#define UART0_BASE 0x10000000L
#define PLIC_BASE 0x0C000000L
#define CLINT_BASE 0x02000000L

/*
 * Interrupt Source ID
 * see https://github.com/qemu/qemu/blob/master/include/hw/riscv/virt.h
 * enum {
 *     UART0_IRQ = 10,
 *     ......
 * };
 */
#define UART0_IRQ 10

#endif /* __PLATFORM_H__ */