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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;
- extern struct fdt_reset fdt_reset_thead;
- static struct fdt_reset *reset_drivers[] = {
- &fdt_reset_sifive,
- &fdt_reset_htif,
- &fdt_reset_thead,
- };
- 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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