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/*
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2020 Western Digital Corporation or its affiliates.
*
* Authors:
* Anup Patel <anup.patel@wdc.com>
*/
#include <libfdt.h>
#include <sbi/sbi_error.h>
#include <sbi_utils/fdt/fdt_helper.h>
#include <sbi_utils/timer/fdt_timer.h>
#include <sbi_utils/sys/clint.h>
#define CLINT_TIMER_MAX_NR 16
static unsigned long clint_timer_count = 0;
static struct clint_data clint_timer[CLINT_TIMER_MAX_NR];
static int timer_clint_cold_init(void *fdt, int nodeoff,
const struct fdt_match *match)
{
int rc;
unsigned long ctsize;
struct clint_data *ct, *ctmaster = NULL;
if (CLINT_TIMER_MAX_NR <= clint_timer_count)
return SBI_ENOSPC;
ct = &clint_timer[clint_timer_count++];
if (1 < clint_timer_count)
ctmaster = &clint_timer[0];
rc = fdt_parse_aclint_node(fdt, nodeoff, true, &ct->addr, &ctsize,
&ct->first_hartid, &ct->hart_count);
if (rc)
return rc;
ct->has_64bit_mmio = true;
if (fdt_getprop(fdt, nodeoff, "clint,has-no-64bit-mmio", &rc))
ct->has_64bit_mmio = false;
return clint_cold_timer_init(ct, ctmaster);
}
static const struct fdt_match timer_clint_match[] = {
{ .compatible = "riscv,clint0" },
{ .compatible = "sifive,clint0" },
{ },
};
struct fdt_timer fdt_timer_clint = {
.match_table = timer_clint_match,
.cold_init = timer_clint_cold_init,
.warm_init = clint_warm_timer_init,
.exit = NULL,
};
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