src/sbi/sys_reset.zig


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// SPDX-FileCopyrightText: 2024 Himbeer <himbeer@disroot.org>
//
// SPDX-License-Identifier: AGPL-3.0-or-later

const base = @import("base.zig");
const instructions = @import("../instructions.zig");
const sbierr = @import("error.zig");

const SBIError = sbierr.SBIError;

const ExtId: usize = 0x53525354;

const FnId = enum(usize) {
    Reset = 0,
};

pub const Type = enum(u32) {
    Shutdown = 0,
    ColdReboot = 1,
    WarmReboot = 2,
};

pub const Reason = enum(u32) {
    None = 0,
    SysErr = 1,
};

pub fn reset(@"type": Type, reset_reason: Reason) !void {
    if (!try base.probeExt(ExtId)) {
        return SbiError.NotSupported;
    }

    const typeId = @intFromEnum(reset_type);
    const reasonId = @intFromEnum(reset_reason);

    const ret = instructions.ecall(ExtId, @intFromEnum(FnId.Reset), ty, reason, 0);
    if (ret.err != 0) {
        return sbierr.errorFromCode(ret.err);
    }
}