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提交 f0785732 编写于 作者: B BernardXiong
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[bsp] Use sbi from freebsd

上级 50368169
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Showing with 485 addition and 101 deletion
bsp/qemu-riscv-virt64/driver/board.c
浏览文件 @ f0785732
......@@ -38,7 +38,8 @@ void primary_cpu_entry(void)
extern void entry(void);
/* disable global interrupt */
init_bss();
rt_memset(&__bss_start, 0x0, &__bss_end - &__bss_start);
// init_bss();
rt_hw_interrupt_disable();
entry();
}
......@@ -76,7 +77,7 @@ void rt_hw_board_init(void)
void rt_hw_cpu_reset(void)
{
SBI_CALL_0(SBI_SHUTDOWN);
sbi_shutdown();
while(1);
}
MSH_CMD_EXPORT_ALIAS(rt_hw_cpu_reset, reboot, reset machine);
......
bsp/qemu-riscv-virt64/driver/drv_uart.c
浏览文件 @ f0785732
......@@ -98,23 +98,25 @@ static rt_err_t uart_control(struct rt_serial_device *serial, int cmd, void *arg
static int drv_uart_putc(struct rt_serial_device *serial, char c)
{
SBI_CALL_1(SBI_CONSOLE_PUTCHAR, c);
sbi_console_putchar(c);
return (1);
}
static int drv_uart_getc(struct rt_serial_device *serial)
{
return SBI_CALL_0(SBI_CONSOLE_GETCHAR);
return sbi_console_getchar();
}
#if 0
void drv_uart_puts(char *str)
{
sbi_console_putstr(str);
}
#endif
char rt_hw_console_getchar(void)
{
return SBI_CALL_0(SBI_CONSOLE_GETCHAR);
return sbi_console_getchar();
}
static void uart_rx(void *param)
......
bsp/qemu-riscv-virt64/driver/sbi.c 0 → 100644
浏览文件 @ f0785732
/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-05-18 Bernard port from FreeBSD
*/
/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2019 Mitchell Horne <mhorne@FreeBSD.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "sbi.h"
#include <stdbool.h>
#include <rtthread.h>
/* SBI Implementation-Specific Definitions */
#define OPENSBI_VERSION_MAJOR_OFFSET 16
#define OPENSBI_VERSION_MINOR_MASK 0xFFFF
unsigned long sbi_spec_version;
unsigned long sbi_impl_id;
unsigned long sbi_impl_version;
static bool has_time_extension = false;
static bool has_ipi_extension = false;
static bool has_rfnc_extension = false;
static struct sbi_ret
sbi_get_spec_version(void)
{
return (SBI_CALL0(SBI_EXT_ID_BASE, SBI_BASE_GET_SPEC_VERSION));
}
static struct sbi_ret
sbi_get_impl_id(void)
{
return (SBI_CALL0(SBI_EXT_ID_BASE, SBI_BASE_GET_IMPL_ID));
}
static struct sbi_ret
sbi_get_impl_version(void)
{
return (SBI_CALL0(SBI_EXT_ID_BASE, SBI_BASE_GET_IMPL_VERSION));
}
void
sbi_print_version(void)
{
u_int major;
u_int minor;
/* For legacy SBI implementations. */
if (sbi_spec_version == 0)
{
rt_kprintf("SBI: Unknown (Legacy) Implementation\n");
rt_kprintf("SBI Specification Version: 0.1\n");
return;
}
switch (sbi_impl_id)
{
case (SBI_IMPL_ID_BBL):
rt_kprintf("SBI: Berkely Boot Loader %lu\n", sbi_impl_version);
break;
case (SBI_IMPL_ID_XVISOR):
rt_kprintf("SBI: eXtensible Versatile hypervISOR %lu\n", sbi_impl_version);
break;
case (SBI_IMPL_ID_KVM):
rt_kprintf("SBI: Kernel-based Virtual Machine %lu\n", sbi_impl_version);
break;
case (SBI_IMPL_ID_RUSTSBI):
rt_kprintf("SBI: RustSBI %lu\n", sbi_impl_version);
break;
case (SBI_IMPL_ID_DIOSIX):
rt_kprintf("SBI: Diosix %lu\n", sbi_impl_version);
break;
case (SBI_IMPL_ID_OPENSBI):
major = sbi_impl_version >> OPENSBI_VERSION_MAJOR_OFFSET;
minor = sbi_impl_version & OPENSBI_VERSION_MINOR_MASK;
rt_kprintf("SBI: OpenSBI v%u.%u\n", major, minor);
break;
default:
rt_kprintf("SBI: Unrecognized Implementation: %lu\n", sbi_impl_id);
break;
}
major = (sbi_spec_version & SBI_SPEC_VERS_MAJOR_MASK) >>
SBI_SPEC_VERS_MAJOR_OFFSET;
minor = (sbi_spec_version & SBI_SPEC_VERS_MINOR_MASK);
rt_kprintf("SBI Specification Version: %u.%u\n", major, minor);
}
void
sbi_set_timer(uint64_t val)
{
struct sbi_ret ret;
/* Use the TIME legacy replacement extension, if available. */
if (has_time_extension)
{
ret = SBI_CALL1(SBI_EXT_ID_TIME, SBI_TIME_SET_TIMER, val);
RT_ASSERT(ret.error == SBI_SUCCESS);
}
else
{
(void)SBI_CALL1(SBI_SET_TIMER, 0, val);
}
}
void
sbi_send_ipi(const unsigned long *hart_mask)
{
struct sbi_ret ret;
/* Use the IPI legacy replacement extension, if available. */
if (has_ipi_extension)
{
ret = SBI_CALL2(SBI_EXT_ID_IPI, SBI_IPI_SEND_IPI,
*hart_mask, 0);
RT_ASSERT(ret.error == SBI_SUCCESS);
}
else
{
(void)SBI_CALL1(SBI_SEND_IPI, 0, (uint64_t)hart_mask);
}
}
void
sbi_remote_fence_i(const unsigned long *hart_mask)
{
struct sbi_ret ret;
/* Use the RFENCE legacy replacement extension, if available. */
if (has_rfnc_extension)
{
ret = SBI_CALL2(SBI_EXT_ID_RFNC, SBI_RFNC_REMOTE_FENCE_I,
*hart_mask, 0);
RT_ASSERT(ret.error == SBI_SUCCESS);
}
else
{
(void)SBI_CALL1(SBI_REMOTE_FENCE_I, 0, (uint64_t)hart_mask);
}
}
void
sbi_remote_sfence_vma(const unsigned long *hart_mask, unsigned long start, unsigned long size)
{
struct sbi_ret ret;
/* Use the RFENCE legacy replacement extension, if available. */
if (has_rfnc_extension)
{
ret = SBI_CALL4(SBI_EXT_ID_RFNC, SBI_RFNC_REMOTE_SFENCE_VMA,
*hart_mask, 0, start, size);
RT_ASSERT(ret.error == SBI_SUCCESS);
}
else
{
(void)SBI_CALL3(SBI_REMOTE_SFENCE_VMA, 0, (uint64_t)hart_mask,
start, size);
}
}
void
sbi_remote_sfence_vma_asid(const unsigned long *hart_mask, unsigned long start, unsigned long size,
unsigned long asid)
{
struct sbi_ret ret;
/* Use the RFENCE legacy replacement extension, if available. */
if (has_rfnc_extension)
{
ret = SBI_CALL5(SBI_EXT_ID_RFNC, SBI_RFNC_REMOTE_SFENCE_VMA_ASID,
*hart_mask, 0, start, size, asid);
RT_ASSERT(ret.error == SBI_SUCCESS);
}
else
{
(void)SBI_CALL4(SBI_REMOTE_SFENCE_VMA_ASID, 0,
(uint64_t)hart_mask, start, size, asid);
}
}
int
sbi_hsm_hart_start(unsigned long hart, unsigned long start_addr, unsigned long priv)
{
struct sbi_ret ret;
ret = SBI_CALL3(SBI_EXT_ID_HSM, SBI_HSM_HART_START, hart, start_addr, priv);
return (ret.error != 0 ? (int)ret.error : 0);
}
void
sbi_hsm_hart_stop(void)
{
(void)SBI_CALL0(SBI_EXT_ID_HSM, SBI_HSM_HART_STOP);
}
int
sbi_hsm_hart_status(unsigned long hart)
{
struct sbi_ret ret;
ret = SBI_CALL1(SBI_EXT_ID_HSM, SBI_HSM_HART_STATUS, hart);
return (ret.error != 0 ? (int)ret.error : (int)ret.value);
}
void
sbi_init(void)
{
struct sbi_ret sret;
/*
* Get the spec version. For legacy SBI implementations this will
* return an error, otherwise it is guaranteed to succeed.
*/
sret = sbi_get_spec_version();
if (sret.error != 0)
{
/* We are running a legacy SBI implementation. */
sbi_spec_version = 0;
return;
}
/* Set the SBI implementation info. */
sbi_spec_version = sret.value;
sbi_impl_id = sbi_get_impl_id().value;
sbi_impl_version = sbi_get_impl_version().value;
/* Probe for legacy replacement extensions. */
if (sbi_probe_extension(SBI_EXT_ID_TIME) != 0)
has_time_extension = true;
if (sbi_probe_extension(SBI_EXT_ID_IPI) != 0)
has_ipi_extension = true;
if (sbi_probe_extension(SBI_EXT_ID_RFNC) != 0)
has_rfnc_extension = true;
}
bsp/qemu-riscv-virt64/driver/sbi.h
浏览文件 @ f0785732
/*
* Copyright (C) 2015 Regents of the University of California
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, version 2.
* SPDX-License-Identifier: Apache-2.0
*
* This program is distributed in the hope that it will be
* useful, but WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
* Change Logs:
* Date Author Notes
* 2021-05-18 Bernard port from FreeBSD
*/
#ifndef _ASM_RISCV_SBI_H
#define _ASM_RISCV_SBI_H
#include <asm/sbidef.h>
#include <sys/types.h>
#define SBI_CALL(which, arg0, arg1, arg2) \
({ \
register uintptr_t a0 asm("a0") = (uintptr_t)(arg0); \
register uintptr_t a1 asm("a1") = (uintptr_t)(arg1); \
register uintptr_t a2 asm("a2") = (uintptr_t)(arg2); \
register uintptr_t a7 asm("a7") = (uintptr_t)(which); \
asm volatile("ecall" \
: "+r"(a0) \
: "r"(a1), "r"(a2), "r"(a7) \
: "memory"); \
a0; \
})
/* Lazy implementations until SBI is finalized */
#define SBI_CALL_0(which) SBI_CALL(which, 0, 0, 0)
#define SBI_CALL_1(which, arg0) SBI_CALL(which, arg0, 0, 0)
#define SBI_CALL_2(which, arg0, arg1) \
SBI_CALL(which, arg0, arg1, 0)
#define SBI_CALL_3(which, arg0, arg1, arg2) \
SBI_CALL(which, arg0, arg1, arg2)
static inline void sbi_console_putstr(char *str)
{
// FIXME: machine mode cannot access `str`
// if `str` is a virtual address. So we use
// SBI_CONSOLE_PUTCHAR to implement this function.
while (*str != '\0') {
SBI_CALL_1(SBI_CONSOLE_PUTCHAR, *str++);
}
}
/*-
* Copyright (c) 2016-2017 Ruslan Bukin <br@bsdpad.com>
* All rights reserved.
* Copyright (c) 2019 Mitchell Horne <mhorne@FreeBSD.org>
*
* Portions of this software were developed by SRI International and the
* University of Cambridge Computer Laboratory under DARPA/AFRL contract
* FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme.
*
* Portions of this software were developed by the University of Cambridge
* Computer Laboratory as part of the CTSRD Project, with support from the
* UK Higher Education Innovation Fund (HEIF).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
static inline uintptr_t sbi_sd_write(
unsigned int mem_address, unsigned int num_of_blocks,
unsigned int block_id)
{
return SBI_CALL_3(
SBI_SD_WRITE, mem_address, num_of_blocks, block_id);
}
#ifndef _MACHINE_SBI_H_
#define _MACHINE_SBI_H_
#include <rtdef.h>
/* SBI Specification Version */
#define SBI_SPEC_VERS_MAJOR_OFFSET 24
#define SBI_SPEC_VERS_MAJOR_MASK (0x7F << SBI_SPEC_VERS_MAJOR_OFFSET)
#define SBI_SPEC_VERS_MINOR_OFFSET 0
#define SBI_SPEC_VERS_MINOR_MASK (0xFFFFFF << SBI_SPEC_VERS_MINOR_OFFSET)
/* SBI Implementation IDs */
#define SBI_IMPL_ID_BBL 0
#define SBI_IMPL_ID_OPENSBI 1
#define SBI_IMPL_ID_XVISOR 2
#define SBI_IMPL_ID_KVM 3
#define SBI_IMPL_ID_RUSTSBI 4
#define SBI_IMPL_ID_DIOSIX 5
/* SBI Error Codes */
#define SBI_SUCCESS 0
#define SBI_ERR_FAILURE -1
#define SBI_ERR_NOT_SUPPORTED -2
#define SBI_ERR_INVALID_PARAM -3
#define SBI_ERR_DENIED -4
#define SBI_ERR_INVALID_ADDRESS -5
#define SBI_ERR_ALREADY_AVAILABLE -6
/* SBI Base Extension */
#define SBI_EXT_ID_BASE 0x10
#define SBI_BASE_GET_SPEC_VERSION 0
#define SBI_BASE_GET_IMPL_ID 1
#define SBI_BASE_GET_IMPL_VERSION 2
#define SBI_BASE_PROBE_EXTENSION 3
#define SBI_BASE_GET_MVENDORID 4
#define SBI_BASE_GET_MARCHID 5
#define SBI_BASE_GET_MIMPID 6
/* Timer (TIME) Extension */
#define SBI_EXT_ID_TIME 0x54494D45
#define SBI_TIME_SET_TIMER 0
/* IPI (IPI) Extension */
#define SBI_EXT_ID_IPI 0x735049
#define SBI_IPI_SEND_IPI 0
/* RFENCE (RFNC) Extension */
#define SBI_EXT_ID_RFNC 0x52464E43
#define SBI_RFNC_REMOTE_FENCE_I 0
#define SBI_RFNC_REMOTE_SFENCE_VMA 1
#define SBI_RFNC_REMOTE_SFENCE_VMA_ASID 2
#define SBI_RFNC_REMOTE_HFENCE_GVMA_VMID 3
#define SBI_RFNC_REMOTE_HFENCE_GVMA 4
#define SBI_RFNC_REMOTE_HFENCE_VVMA_ASID 5
#define SBI_RFNC_REMOTE_HFENCE_VVMA 6
/* Hart State Management (HSM) Extension */
#define SBI_EXT_ID_HSM 0x48534D
#define SBI_HSM_HART_START 0
#define SBI_HSM_HART_STOP 1
#define SBI_HSM_HART_STATUS 2
#define SBI_HSM_STATUS_STARTED 0
#define SBI_HSM_STATUS_STOPPED 1
#define SBI_HSM_STATUS_START_PENDING 2
#define SBI_HSM_STATUS_STOP_PENDING 3
/* Legacy Extensions */
#define SBI_SET_TIMER 0
#define SBI_CONSOLE_PUTCHAR 1
#define SBI_CONSOLE_GETCHAR 2
#define SBI_CLEAR_IPI 3
#define SBI_SEND_IPI 4
#define SBI_REMOTE_FENCE_I 5
#define SBI_REMOTE_SFENCE_VMA 6
#define SBI_REMOTE_SFENCE_VMA_ASID 7
#define SBI_SHUTDOWN 8
#define SBI_CALL0(e, f) SBI_CALL5(e, f, 0, 0, 0, 0, 0)
#define SBI_CALL1(e, f, p1) SBI_CALL5(e, f, p1, 0, 0, 0, 0)
#define SBI_CALL2(e, f, p1, p2) SBI_CALL5(e, f, p1, p2, 0, 0, 0)
#define SBI_CALL3(e, f, p1, p2, p3) SBI_CALL5(e, f, p1, p2, p3, 0, 0)
#define SBI_CALL4(e, f, p1, p2, p3, p4) SBI_CALL5(e, f, p1, p2, p3, p4, 0)
#define SBI_CALL5(e, f, p1, p2, p3, p4, p5) sbi_call(e, f, p1, p2, p3, p4, p5)
static inline uintptr_t sbi_sd_read(
unsigned int mem_address, unsigned int num_of_blocks,
unsigned int block_id)
{
return SBI_CALL_3(
SBI_SD_READ, mem_address, num_of_blocks, block_id);
}
/*
* Documentation available at
* https://github.com/riscv/riscv-sbi-doc/blob/master/riscv-sbi.adoc
*/
static inline void sbi_console_putchar(int ch)
struct sbi_ret
{
SBI_CALL_1(SBI_CONSOLE_PUTCHAR, ch);
}
long error;
long value;
};
static inline int sbi_console_getchar(void)
static __inline struct sbi_ret
sbi_call(uint64_t arg7, uint64_t arg6, uint64_t arg0, uint64_t arg1,
uint64_t arg2, uint64_t arg3, uint64_t arg4)
{
return SBI_CALL_0(SBI_CONSOLE_GETCHAR);
struct sbi_ret ret;
register uintptr_t a0 __asm("a0") = (uintptr_t)(arg0);
register uintptr_t a1 __asm("a1") = (uintptr_t)(arg1);
register uintptr_t a2 __asm("a2") = (uintptr_t)(arg2);
register uintptr_t a3 __asm("a3") = (uintptr_t)(arg3);
register uintptr_t a4 __asm("a4") = (uintptr_t)(arg4);
register uintptr_t a6 __asm("a6") = (uintptr_t)(arg6);
register uintptr_t a7 __asm("a7") = (uintptr_t)(arg7);
__asm __volatile(\
"ecall" \
: "+r"(a0), "+r"(a1) \
: "r"(a2), "r"(a3), "r"(a4), "r"(a6), "r"(a7) \
: "memory");
ret.error = a0;
ret.value = a1;
return (ret);
}
static inline void sbi_set_timer(uint64_t stime_value)
/* Base extension functions and variables. */
extern unsigned long sbi_spec_version;
extern unsigned long sbi_impl_id;
extern unsigned long sbi_impl_version;
static __inline long
sbi_probe_extension(long id)
{
#if __riscv_xlen == 32
SBI_CALL_2(SBI_SET_TIMER, stime_value, stime_value >> 32);
#else
SBI_CALL_1(SBI_SET_TIMER, stime_value);
#endif
return (SBI_CALL1(SBI_EXT_ID_BASE, SBI_BASE_PROBE_EXTENSION, id).value);
}
static inline void sbi_shutdown(void) { SBI_CALL_0(SBI_SHUTDOWN); }
/* TIME extension functions. */
void sbi_set_timer(uint64_t val);
static inline void sbi_clear_ipi(void)
{
SBI_CALL_0(SBI_CLEAR_IPI);
}
/* IPI extension functions. */
void sbi_send_ipi(const unsigned long *hart_mask);
static inline void sbi_send_ipi(const unsigned long *hart_mask)
{
SBI_CALL_1(SBI_SEND_IPI, hart_mask);
}
/* RFENCE extension functions. */
void sbi_remote_fence_i(const unsigned long *hart_mask);
void sbi_remote_sfence_vma(const unsigned long *hart_mask, unsigned long start, unsigned long size);
void sbi_remote_sfence_vma_asid(const unsigned long *hart_mask, unsigned long start,
unsigned long size, unsigned long asid);
/* Hart State Management extension functions. */
/*
* Start execution on the specified hart at physical address start_addr. The
* register a0 will contain the hart's ID, and a1 will contain the value of
* priv.
*/
int sbi_hsm_hart_start(unsigned long hart, unsigned long start_addr, unsigned long priv);
static inline void sbi_remote_fence_i(
const unsigned long *hart_mask)
/*
* Stop execution on the current hart. Interrupts should be disabled, or this
* function may return.
*/
void sbi_hsm_hart_stop(void);
/*
* Get the execution status of the specified hart. The status will be one of:
* - SBI_HSM_STATUS_STARTED
* - SBI_HSM_STATUS_STOPPED
* - SBI_HSM_STATUS_START_PENDING
* - SBI_HSM_STATUS_STOP_PENDING
*/
int sbi_hsm_hart_status(unsigned long hart);
/* Legacy extension functions. */
static __inline void
sbi_console_putchar(int ch)
{
SBI_CALL_1(SBI_REMOTE_FENCE_I, hart_mask);
(void)SBI_CALL1(SBI_CONSOLE_PUTCHAR, 0, ch);
}
static inline void sbi_remote_sfence_vma(
const unsigned long *hart_mask, unsigned long start,
unsigned long size)
static __inline int
sbi_console_getchar(void)
{
SBI_CALL_1(SBI_REMOTE_SFENCE_VMA, hart_mask);
/*
* XXX: The "error" is returned here because legacy SBI functions
* continue to return their value in a0.
*/
return (SBI_CALL0(SBI_CONSOLE_GETCHAR, 0).error);
}
static inline void sbi_remote_sfence_vma_asid(
const unsigned long *hart_mask, unsigned long start,
unsigned long size, unsigned long asid)
static __inline void
sbi_shutdown(void)
{
SBI_CALL_1(SBI_REMOTE_SFENCE_VMA_ASID, hart_mask);
}
static inline void sbi_net_write(char * buffer, int length) {
SBI_CALL_2(SBI_NET_WRITE, buffer, length);
(void)SBI_CALL0(SBI_SHUTDOWN, 0);
}
static inline void sbi_net_read() {
SBI_CALL_0(SBI_NET_READ);
}
void sbi_print_version(void);
void sbi_init(void);
#endif
#endif /* !_MACHINE_SBI_H_ */
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