-----Original Message----- From: Lukas Auer [mailto:lukas.auer@aisec.fraunhofer.de] Sent: Tuesday, February 12, 2019 3:44 AM To: u-boot@lists.denx.de Cc: Atish Patra Atish.Patra@wdc.com; Anup Patel Anup.Patel@wdc.com; Bin Meng bmeng.cn@gmail.com; Andreas Schwab schwab@suse.de; Palmer Dabbelt palmer@sifive.com; Alexander Graf agraf@suse.de; Lukas Auer lukas.auer@aisec.fraunhofer.de; Rick Chen rick@andestech.com Subject: [PATCH 2/7] riscv: import the supervisor binary interface header file
Import the supervisor binary interface (SBI) header file from Linux (arch/riscv/include/asm/sbi.h). The last change to it was in commit 6d60b6ee0c97 ("RISC-V: Device, timer, IRQs, and the SBI").
Signed-off-by: Lukas Auer lukas.auer@aisec.fraunhofer.de
arch/riscv/include/asm/sbi.h | 94 ++++++++++++++++++++++++++++++++++++ 1 file changed, 94 insertions(+) create mode 100644 arch/riscv/include/asm/sbi.h
diff --git a/arch/riscv/include/asm/sbi.h b/arch/riscv/include/asm/sbi.h new file mode 100644 index 0000000000..ced57defdd --- /dev/null +++ b/arch/riscv/include/asm/sbi.h @@ -0,0 +1,94 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/*
- Copyright (C) 2015 Regents of the University of California
- Taken from Linux arch/riscv/include/asm/sbi.h */
+#ifndef _ASM_RISCV_SBI_H +#define _ASM_RISCV_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
+#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)
+static inline void sbi_console_putchar(int ch) {
- SBI_CALL_1(SBI_CONSOLE_PUTCHAR, ch);
+}
+static inline int sbi_console_getchar(void) {
- return SBI_CALL_0(SBI_CONSOLE_GETCHAR); }
+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); #else
- SBI_CALL_1(SBI_SET_TIMER, stime_value); #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);
+}
+static inline void sbi_send_ipi(const unsigned long *hart_mask) {
- SBI_CALL_1(SBI_SEND_IPI, hart_mask);
+}
+static inline void sbi_remote_fence_i(const unsigned long *hart_mask) {
- SBI_CALL_1(SBI_REMOTE_FENCE_I, hart_mask); }
+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); }
+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); }
+#endif
2.20.1
Looks good to me.
Reviewed-by: Anup Patel anup.patel@wdc.com
Regards, Anup