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lib: Rename existing SBI implementation as 0.1.

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Current SBI implementation is now considered as version 0.1 and will be
removed/replaced with newer extension/functions in future.

Rename the existing implementations accordingly to be in sync with the
specification.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Zong Li <zong.li@sifive.com>
This commit is contained in:
Atish Patra
2019-10-02 13:59:37 -07:00
committed by Anup Patel
parent 3d335bc54b
commit 26aec6afed
3 changed files with 48 additions and 28 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
firmware/payloads/test_main.c
View File

@@ -26,7 +26,7 @@
#define SBI_ECALL_1(__num, __a0) SBI_ECALL(__num, __a0, 0, 0)
#define SBI_ECALL_2(__num, __a0, __a1) SBI_ECALL(__num, __a0, __a1, 0)
#define sbi_ecall_console_putc(c) SBI_ECALL_1(SBI_ECALL_CONSOLE_PUTCHAR, (c))
#define sbi_ecall_console_putc(c) SBI_ECALL_1(SBI_EXT_0_1_CONSOLE_PUTCHAR, (c))
static inline void sbi_ecall_console_puts(const char *str)
{

20
include/sbi/sbi_ecall_interface.h
View File

@@ -12,15 +12,17 @@
/* clang-format off */
#define SBI_ECALL_SET_TIMER 0
#define SBI_ECALL_CONSOLE_PUTCHAR 1
#define SBI_ECALL_CONSOLE_GETCHAR 2
#define SBI_ECALL_CLEAR_IPI 3
#define SBI_ECALL_SEND_IPI 4
#define SBI_ECALL_REMOTE_FENCE_I 5
#define SBI_ECALL_REMOTE_SFENCE_VMA 6
#define SBI_ECALL_REMOTE_SFENCE_VMA_ASID 7
#define SBI_ECALL_SHUTDOWN 8
enum sbi_ext_id {
SBI_EXT_0_1_SET_TIMER = 0x0,
SBI_EXT_0_1_CONSOLE_PUTCHAR = 0x1,
SBI_EXT_0_1_CONSOLE_GETCHAR = 0x2,
SBI_EXT_0_1_CLEAR_IPI = 0x3,
SBI_EXT_0_1_SEND_IPI = 0x4,
SBI_EXT_0_1_REMOTE_FENCE_I = 0x5,
SBI_EXT_0_1_REMOTE_SFENCE_VMA = 0x6,
SBI_EXT_0_1_REMOTE_SFENCE_VMA_ASID = 0x7,
SBI_EXT_0_1_SHUTDOWN = 0x8,
};
/* clang-format on */

54
lib/sbi/sbi_ecall.c
View File

@@ -31,16 +31,16 @@ u16 sbi_ecall_version_minor(void)
return SBI_ECALL_VERSION_MINOR;
}
int sbi_ecall_handler(u32 hartid, ulong mcause, struct sbi_trap_regs *regs,
struct sbi_scratch *scratch)
int sbi_ecall_0_1_handler(u32 hartid, struct sbi_trap_regs *regs,
struct sbi_scratch *scratch,
struct unpriv_trap *uptrap)
{
int ret = SBI_ENOTSUPP;
struct unpriv_trap uptrap;
struct sbi_tlb_info tlb_info;
u32 source_hart = sbi_current_hartid();
switch (regs->a7) {
case SBI_ECALL_SET_TIMER:
case SBI_EXT_0_1_SET_TIMER:
#if __riscv_xlen == 32
sbi_timer_event_start(scratch,
(((u64)regs->a1 << 32) | (u64)regs->a0));
@@ -49,60 +49,78 @@ int sbi_ecall_handler(u32 hartid, ulong mcause, struct sbi_trap_regs *regs,
#endif
ret = 0;
break;
case SBI_ECALL_CONSOLE_PUTCHAR:
case SBI_EXT_0_1_CONSOLE_PUTCHAR:
sbi_putc(regs->a0);
ret = 0;
break;
case SBI_ECALL_CONSOLE_GETCHAR:
case SBI_EXT_0_1_CONSOLE_GETCHAR:
regs->a0 = sbi_getc();
ret = 0;
break;
case SBI_ECALL_CLEAR_IPI:
case SBI_EXT_0_1_CLEAR_IPI:
sbi_ipi_clear_smode(scratch);
ret = 0;
break;
case SBI_ECALL_SEND_IPI:
ret = sbi_ipi_send_many(scratch, &uptrap, (ulong *)regs->a0,
case SBI_EXT_0_1_SEND_IPI:
ret = sbi_ipi_send_many(scratch, uptrap, (ulong *)regs->a0,
SBI_IPI_EVENT_SOFT, NULL);
break;
case SBI_ECALL_REMOTE_FENCE_I:
case SBI_EXT_0_1_REMOTE_FENCE_I:
tlb_info.start = 0;
tlb_info.size = 0;
tlb_info.type = SBI_ITLB_FLUSH;
tlb_info.shart_mask = 1UL << source_hart;
ret = sbi_ipi_send_many(scratch, &uptrap, (ulong *)regs->a0,
ret = sbi_ipi_send_many(scratch, uptrap, (ulong *)regs->a0,
SBI_IPI_EVENT_FENCE_I, &tlb_info);
break;
case SBI_ECALL_REMOTE_SFENCE_VMA:
case SBI_EXT_0_1_REMOTE_SFENCE_VMA:
tlb_info.start = (unsigned long)regs->a1;
tlb_info.size = (unsigned long)regs->a2;
tlb_info.type = SBI_TLB_FLUSH_VMA;
tlb_info.shart_mask = 1UL << source_hart;
ret = sbi_ipi_send_many(scratch, &uptrap, (ulong *)regs->a0,
ret = sbi_ipi_send_many(scratch, uptrap, (ulong *)regs->a0,
SBI_IPI_EVENT_SFENCE_VMA, &tlb_info);
break;
case SBI_ECALL_REMOTE_SFENCE_VMA_ASID:
case SBI_EXT_0_1_REMOTE_SFENCE_VMA_ASID:
tlb_info.start = (unsigned long)regs->a1;
tlb_info.size = (unsigned long)regs->a2;
tlb_info.asid = (unsigned long)regs->a3;
tlb_info.type = SBI_TLB_FLUSH_VMA_ASID;
tlb_info.shart_mask = 1UL << source_hart;
ret = sbi_ipi_send_many(scratch, &uptrap, (ulong *)regs->a0,
ret = sbi_ipi_send_many(scratch, uptrap, (ulong *)regs->a0,
SBI_IPI_EVENT_SFENCE_VMA_ASID,
&tlb_info);
break;
case SBI_ECALL_SHUTDOWN:
case SBI_EXT_0_1_SHUTDOWN:
sbi_system_shutdown(scratch, 0);
ret = 0;
break;
default:
regs->a0 = SBI_ENOTSUPP;
ret = 0;
break;
ret = 0;
};
return ret;
}
int sbi_ecall_handler(u32 hartid, ulong mcause, struct sbi_trap_regs *regs,
struct sbi_scratch *scratch)
{
int ret = SBI_ENOTSUPP;
struct unpriv_trap uptrap;
u32 extension_id = regs->a7;
if (extension_id >= SBI_EXT_0_1_SET_TIMER &&
extension_id <= SBI_EXT_0_1_SHUTDOWN) {
ret = sbi_ecall_0_1_handler(hartid, regs, scratch, &uptrap);
} else {
regs->a0 = SBI_ENOTSUPP;
ret = 0;
}
if (!ret) {
regs->mepc += 4;
} else if (ret == SBI_ETRAP) {