blob: 3647980d14c3c9c853c3541b0907a951c8ef4716 [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0
* Copyright (c) 2019 Christoph Hellwig.
#include <linux/io.h>
#include <linux/of_address.h>
#include <linux/types.h>
#include <asm/clint.h>
#include <asm/csr.h>
#include <asm/timex.h>
#include <asm/smp.h>
* This is the layout used by the SiFive clint, which is also shared by the qemu
* virt platform, and the Kendryte KD210 at least.
#define CLINT_IPI_OFF 0
#define CLINT_TIME_CMP_OFF 0x4000
#define CLINT_TIME_VAL_OFF 0xbff8
u32 __iomem *clint_ipi_base;
void clint_init_boot_cpu(void)
struct device_node *np;
void __iomem *base;
np = of_find_compatible_node(NULL, NULL, "riscv,clint0");
if (!np) {
panic("clint not found");
base = of_iomap(np, 0);
if (!base)
panic("could not map CLINT");
clint_ipi_base = base + CLINT_IPI_OFF;
riscv_time_cmp = base + CLINT_TIME_CMP_OFF;
riscv_time_val = base + CLINT_TIME_VAL_OFF;