mirror of
https://github.com/riscv-software-src/opensbi
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62e178a0a7
In DT, multiple reset devices may use the same driver, and they may have different priorities. If rc is returned after the first initialization, the highest priority device may be lost. Fixes: a73ff043e991 (lib: utils/reset: Fix fdt_reset to search for more dt nodes) Signed-off-by: Xiang W <wxjstz@126.com> Reviewed-by: Anup Patel <anup@brainfault.org>
53 lines
1.1 KiB
C
53 lines
1.1 KiB
C
/*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2020 Western Digital Corporation or its affiliates.
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*
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* Authors:
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* Anup Patel <anup.patel@wdc.com>
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*/
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#include <sbi/sbi_console.h>
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#include <sbi/sbi_error.h>
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#include <sbi/sbi_scratch.h>
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#include <sbi_utils/fdt/fdt_helper.h>
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#include <sbi_utils/reset/fdt_reset.h>
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/* List of FDT reset drivers generated at compile time */
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extern struct fdt_reset *fdt_reset_drivers[];
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extern unsigned long fdt_reset_drivers_size;
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int fdt_reset_driver_init(void *fdt, struct fdt_reset *drv)
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{
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int noff, rc, cnt = 0;
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const struct fdt_match *match;
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noff = -1;
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while ((noff = fdt_find_match(fdt, noff,
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drv->match_table, &match)) >= 0) {
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if (!fdt_node_is_enabled(fdt, noff))
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continue;
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if (drv->init) {
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rc = drv->init(fdt, noff, match);
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if (!rc)
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cnt++;
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else if (rc != SBI_ENODEV) {
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sbi_printf("%s: %s init failed, %d\n",
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__func__, match->compatible, rc);
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}
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}
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}
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return cnt > 0 ? 0 : SBI_ENODEV;
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}
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void fdt_reset_init(void)
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{
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int pos;
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void *fdt = fdt_get_address();
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for (pos = 0; pos < fdt_reset_drivers_size; pos++)
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fdt_reset_driver_init(fdt, fdt_reset_drivers[pos]);
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}
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