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Add missing files from r354720

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MFC with:	r354720
Differential Revision:	https://reviews.freebsd.org/D22326
This commit is contained in:
Mitchell Horne 2019-11-15 03:37:49 +00:00
parent ff33210c04
commit 0a0f40c768
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=354721
2 changed files with 66 additions and 6 deletions
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3
sys/riscv/include/md_var.h
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@ -39,6 +39,9 @@ extern int szsigcode;
extern uint64_t *vm_page_dump;
extern int vm_page_dump_size;
extern u_long elf_hwcap;
extern register_t mvendorid;
extern register_t marchid;
extern register_t mimpid;
struct dumperinfo;

69
sys/riscv/include/sbi.h
View File

@ -1,6 +1,7 @@
/*-
* 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
@ -37,6 +38,35 @@
#ifndef _MACHINE_SBI_H_
#define _MACHINE_SBI_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
/* 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
/* 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
/* Legacy Extensions */
#define SBI_SET_TIMER 0
#define SBI_CONSOLE_PUTCHAR 1
#define SBI_CONSOLE_GETCHAR 2
@ -55,13 +85,20 @@
/*
* Documentation available at
* https://github.com/riscv/riscv-sbi-doc/blob/master/riscv-sbi.md
* https://github.com/riscv/riscv-sbi-doc/blob/master/riscv-sbi.adoc
*/
static __inline uint64_t
struct sbi_ret {
long error;
long value;
};
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)
{
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);
@ -71,13 +108,27 @@ sbi_call(uint64_t arg7, uint64_t arg6, uint64_t arg0, uint64_t arg1,
__asm __volatile( \
"ecall" \
:"+r"(a0) \
:"r"(a1), "r"(a2), "r"(a3), "r"(a6), "r"(a7) \
:"+r"(a0), "+r"(a1) \
:"r"(a2), "r"(a3), "r"(a6), "r"(a7) \
:"memory");
return (a0);
ret.error = a0;
ret.value = a1;
return (ret);
}
/* Base extension functions and variables. */
extern u_long sbi_spec_version;
extern u_long sbi_impl_id;
extern u_long sbi_impl_version;
static __inline long
sbi_probe_extension(long id)
{
return (SBI_CALL1(SBI_EXT_ID_BASE, SBI_BASE_PROBE_EXTENSION, id).value);
}
/* Legacy extension functions. */
static __inline void
sbi_console_putchar(int ch)
{
@ -89,7 +140,11 @@ static __inline int
sbi_console_getchar(void)
{
return (SBI_CALL0(SBI_CONSOLE_GETCHAR, 0));
/*
* 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
@ -146,4 +201,6 @@ sbi_remote_sfence_vma_asid(const unsigned long *hart_mask,
start, size, asid);
}
void sbi_init(void);
#endif /* !_MACHINE_SBI_H_ */