forked from Mirrors/opensbi
66d018499c
Ideally, the SBI implementation ID for OpenSBI should always be 0x1 (as mentioned in SBI v0.2 spec) but external firmware (such as EDK2) which use OpenSBI as library might want to override the SBI implementation ID with their custom implementation ID. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
60 lines
1.5 KiB
C
60 lines
1.5 KiB
C
/*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2019 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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#ifndef __SBI_ECALL_H__
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#define __SBI_ECALL_H__
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#include <sbi/sbi_types.h>
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#include <sbi/sbi_list.h>
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#define SBI_ECALL_VERSION_MAJOR 0
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#define SBI_ECALL_VERSION_MINOR 2
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#define SBI_OPENSBI_IMPID 1
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struct sbi_trap_regs;
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struct sbi_trap_info;
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struct sbi_ecall_extension {
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struct sbi_dlist head;
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unsigned long extid_start;
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unsigned long extid_end;
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int (* probe)(unsigned long extid, unsigned long *out_val);
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int (* handle)(unsigned long extid, unsigned long funcid,
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unsigned long *args, unsigned long *out_val,
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struct sbi_trap_info *out_trap);
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};
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extern struct sbi_ecall_extension ecall_base;
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extern struct sbi_ecall_extension ecall_legacy;
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extern struct sbi_ecall_extension ecall_time;
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extern struct sbi_ecall_extension ecall_rfence;
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extern struct sbi_ecall_extension ecall_ipi;
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extern struct sbi_ecall_extension ecall_vendor;
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extern struct sbi_ecall_extension ecall_hsm;
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u16 sbi_ecall_version_major(void);
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u16 sbi_ecall_version_minor(void);
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unsigned long sbi_ecall_get_impid(void);
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void sbi_ecall_set_impid(unsigned long impid);
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struct sbi_ecall_extension *sbi_ecall_find_extension(unsigned long extid);
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int sbi_ecall_register_extension(struct sbi_ecall_extension *ext);
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void sbi_ecall_unregister_extension(struct sbi_ecall_extension *ext);
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int sbi_ecall_handler(struct sbi_trap_regs *regs);
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int sbi_ecall_init(void);
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#endif
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