mirror of
https://github.com/riscv-software-src/opensbi
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d30bb68448
We can have multiple matching DT nodes of the same FDT irqchip driver so in this case we should call cold_init() for all matching DT nodes instead of just first matching DT node. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
75 lines
1.4 KiB
C
75 lines
1.4 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_scratch.h>
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#include <sbi_utils/fdt/fdt_helper.h>
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#include <sbi_utils/irqchip/fdt_irqchip.h>
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extern struct fdt_irqchip fdt_irqchip_plic;
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static struct fdt_irqchip *irqchip_drivers[] = {
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&fdt_irqchip_plic
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};
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static struct fdt_irqchip *current_driver = NULL;
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void fdt_irqchip_exit(void)
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{
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if (current_driver && current_driver->exit)
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current_driver->exit();
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}
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static int fdt_irqchip_warm_init(void)
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{
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if (current_driver && current_driver->warm_init)
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return current_driver->warm_init();
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return 0;
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}
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static int fdt_irqchip_cold_init(void)
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{
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int pos, noff, rc;
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struct fdt_irqchip *drv;
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const struct fdt_match *match;
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void *fdt = sbi_scratch_thishart_arg1_ptr();
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for (pos = 0; pos < array_size(irqchip_drivers); pos++) {
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drv = irqchip_drivers[pos];
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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 (drv->cold_init) {
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rc = drv->cold_init(fdt, noff, match);
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if (rc)
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return rc;
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}
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current_driver = drv;
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}
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if (current_driver)
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break;
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}
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return 0;
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}
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int fdt_irqchip_init(bool cold_boot)
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{
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int rc;
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if (cold_boot) {
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rc = fdt_irqchip_cold_init();
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if (rc)
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return rc;
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}
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return fdt_irqchip_warm_init();
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}
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