diff options
| author | Bin Meng | 2018-12-12 06:12:30 -0800 |
|---|---|---|
| committer | Andes | 2018-12-18 09:56:26 +0800 |
| commit | 644a3cd77e840d1be6a714b8ce284d6ef3ad2f06 (patch) | |
| tree | 1d9270086f38d553463821a2ea220087d6391867 /arch/riscv/include/asm | |
| parent | 3cfc825261d90472fa11ea72d7ed2d293b744140 (diff) | |
riscv: Add a SYSCON driver for SiFive's Core Local Interruptor
This adds U-Boot syscon driver for SiFive's Core Local Interruptor
(CLINT). The CLINT block holds memory-mapped control and status
registers associated with software and timer interrupts.
This driver implements the riscv_get_time() API as required by
the generic RISC-V timer driver, as well as some other APIs that
are needed for handling IPI.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Reviewed-by: Anup Patel <anup@brainfault.org>
Diffstat (limited to 'arch/riscv/include/asm')
| -rw-r--r-- | arch/riscv/include/asm/global_data.h | 3 | ||||
| -rw-r--r-- | arch/riscv/include/asm/syscon.h | 19 |
2 files changed, 22 insertions, 0 deletions
diff --git a/arch/riscv/include/asm/global_data.h b/arch/riscv/include/asm/global_data.h index 4d5d623725e..46fcfab8407 100644 --- a/arch/riscv/include/asm/global_data.h +++ b/arch/riscv/include/asm/global_data.h @@ -12,6 +12,9 @@ /* Architecture-specific global data */ struct arch_global_data { +#ifdef CONFIG_SIFIVE_CLINT + void __iomem *clint; /* clint base address */ +#endif }; #include <asm-generic/global_data.h> diff --git a/arch/riscv/include/asm/syscon.h b/arch/riscv/include/asm/syscon.h new file mode 100644 index 00000000000..d311ee6b45f --- /dev/null +++ b/arch/riscv/include/asm/syscon.h @@ -0,0 +1,19 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (C) 2018, Bin Meng <bmeng.cn@gmail.com> + */ + +#ifndef _ASM_SYSCON_H +#define _ASM_SYSCON_H + +/* + * System controllers in a RISC-V system + * + * So far only SiFive's Core Local Interruptor (CLINT) is defined. + */ +enum { + RISCV_NONE, + RISCV_SYSCON_CLINT, /* Core Local Interruptor (CLINT) */ +}; + +#endif /* _ASM_SYSCON_H */ |