/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2015 Regents of the University of California
+ * Copyright (c) 2020 Western Digital Corporation or its affiliates.
*
* Taken from Linux arch/riscv/include/asm/sbi.h
*/
#include <linux/types.h>
-#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
+enum sbi_ext_id {
+#ifdef CONFIG_SBI_V01
+ 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,
+#endif
+ SBI_EXT_BASE = 0x10,
+ SBI_EXT_TIME = 0x54494D45,
+ SBI_EXT_IPI = 0x735049,
+ SBI_EXT_RFENCE = 0x52464E43,
+};
-#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; \
-})
+enum sbi_ext_base_fid {
+ SBI_EXT_BASE_GET_SPEC_VERSION = 0,
+ SBI_EXT_BASE_GET_IMP_ID,
+ SBI_EXT_BASE_GET_IMP_VERSION,
+ SBI_EXT_BASE_PROBE_EXT,
+ SBI_EXT_BASE_GET_MVENDORID,
+ SBI_EXT_BASE_GET_MARCHID,
+ SBI_EXT_BASE_GET_MIMPID,
+};
-/* 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)
+enum sbi_ext_time_fid {
+ SBI_EXT_TIME_SET_TIMER = 0,
+};
-static inline void sbi_console_putchar(int ch)
-{
- SBI_CALL_1(SBI_CONSOLE_PUTCHAR, ch);
-}
+enum sbi_ext_ipi_fid {
+ SBI_EXT_IPI_SEND_IPI = 0,
+};
-static inline int sbi_console_getchar(void)
-{
- return SBI_CALL_0(SBI_CONSOLE_GETCHAR);
-}
+enum sbi_ext_rfence_fid {
+ SBI_EXT_RFENCE_REMOTE_FENCE_I = 0,
+ SBI_EXT_RFENCE_REMOTE_SFENCE_VMA,
+ SBI_EXT_RFENCE_REMOTE_SFENCE_VMA_ASID,
+};
-static inline void sbi_set_timer(uint64_t stime_value)
-{
-#if __riscv_xlen == 32
- SBI_CALL_2(SBI_SET_TIMER, stime_value, stime_value >> 32);
+#ifdef CONFIG_SBI_V01
+#define SBI_EXT_SET_TIMER SBI_EXT_0_1_SET_TIMER
+#define SBI_FID_SET_TIMER 0
+#define SBI_EXT_SEND_IPI SBI_EXT_0_1_SEND_IPI
+#define SBI_FID_SEND_IPI 0
+#define SBI_EXT_REMOTE_FENCE_I SBI_EXT_0_1_REMOTE_FENCE_I
+#define SBI_FID_REMOTE_FENCE_I 0
+#define SBI_EXT_REMOTE_SFENCE_VMA SBI_EXT_0_1_REMOTE_SFENCE_VMA
+#define SBI_FID_REMOTE_SFENCE_VMA 0
+#define SBI_EXT_REMOTE_SFENCE_VMA_ASID SBI_EXT_0_1_REMOTE_SFENCE_VMA_ASID
+#define SBI_FID_REMOTE_SFENCE_VMA_ASID 0
#else
- SBI_CALL_1(SBI_SET_TIMER, stime_value);
+#define SBI_EXT_SET_TIMER SBI_EXT_TIME
+#define SBI_FID_SET_TIMER SBI_EXT_TIME_SET_TIMER
+#define SBI_EXT_SEND_IPI SBI_EXT_IPI
+#define SBI_FID_SEND_IPI SBI_EXT_IPI_SEND_IPI
+#define SBI_EXT_REMOTE_FENCE_I SBI_EXT_RFENCE
+#define SBI_FID_REMOTE_FENCE_I SBI_EXT_RFENCE_REMOTE_FENCE_I
+#define SBI_EXT_REMOTE_SFENCE_VMA SBI_EXT_RFENCE
+#define SBI_FID_REMOTE_SFENCE_VMA SBI_EXT_RFENCE_REMOTE_SFENCE_VMA
+#define SBI_EXT_REMOTE_SFENCE_VMA_ASID SBI_EXT_RFENCE
+#define SBI_FID_REMOTE_SFENCE_VMA_ASID SBI_EXT_RFENCE_REMOTE_SFENCE_VMA_ASID
#endif
-}
-
-static inline void sbi_shutdown(void)
-{
- SBI_CALL_0(SBI_SHUTDOWN);
-}
-static inline void sbi_clear_ipi(void)
-{
- SBI_CALL_0(SBI_CLEAR_IPI);
-}
+#define SBI_SPEC_VERSION_MAJOR_SHIFT 24
+#define SBI_SPEC_VERSION_MAJOR_MASK 0x7f
+#define SBI_SPEC_VERSION_MINOR_MASK 0xffffff
-static inline void sbi_send_ipi(const unsigned long *hart_mask)
-{
- SBI_CALL_1(SBI_SEND_IPI, hart_mask);
-}
+/* SBI return 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
-static inline void sbi_remote_fence_i(const unsigned long *hart_mask)
-{
- SBI_CALL_1(SBI_REMOTE_FENCE_I, hart_mask);
-}
+struct sbiret {
+ long error;
+ long value;
+};
-static inline void sbi_remote_sfence_vma(const unsigned long *hart_mask,
- unsigned long start,
- unsigned long size)
-{
- SBI_CALL_1(SBI_REMOTE_SFENCE_VMA, hart_mask);
-}
+struct sbiret sbi_ecall(int ext, int fid, unsigned long arg0,
+ unsigned long arg1, unsigned long arg2,
+ unsigned long arg3, unsigned long arg4,
+ unsigned long arg5);
-static inline void sbi_remote_sfence_vma_asid(const unsigned long *hart_mask,
- unsigned long start,
- unsigned long size,
- unsigned long asid)
-{
- SBI_CALL_1(SBI_REMOTE_SFENCE_VMA_ASID, hart_mask);
-}
+#ifdef CONFIG_SBI_V01
+void sbi_console_putchar(int ch);
+int sbi_console_getchar(void);
+void sbi_clear_ipi(void);
+void sbi_shutdown(void);
+void sbi_send_ipi(const unsigned long *hart_mask);
+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);
+#endif
+void sbi_set_timer(uint64_t stime_value);
+int sbi_probe_extension(int ext);
#endif
projects / oweals / u-boot.git / blobdiff