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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 <sbi/sbi_scratch.h>
#include <sbi_utils/fdt/fdt_helper.h>
#include <sbi_utils/reset/fdt_reset.h>
extern struct fdt_reset fdt_reset_sifive;
extern struct fdt_reset fdt_reset_htif;
static struct fdt_reset *reset_drivers[] = {
&fdt_reset_sifive,
&fdt_reset_htif,
};
static struct fdt_reset *current_driver = NULL;
int fdt_system_reset_check(u32 reset_type, u32 reset_reason)
{
if (current_driver && current_driver->system_reset_check)
return current_driver->system_reset_check(reset_type,
reset_reason);
return 0;
}
void fdt_system_reset(u32 reset_type, u32 reset_reason)
{
if (current_driver && current_driver->system_reset)
current_driver->system_reset(reset_type, reset_reason);
}
int fdt_reset_init(void)
{
int pos, noff, rc;
struct fdt_reset *drv;
const struct fdt_match *match;
void *fdt = sbi_scratch_thishart_arg1_ptr();
for (pos = 0; pos < array_size(reset_drivers); pos++) {
drv = reset_drivers[pos];
noff = fdt_find_match(fdt, -1, drv->match_table, &match);
if (noff < 0)
continue;
if (drv->init) {
rc = drv->init(fdt, noff, match);
if (rc)
return rc;
}
current_driver = drv;
break;
}
return 0;
}
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