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| author | Tom Rini <trini@konsulko.com> | 2018-11-26 13:45:29 -0500 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2018-11-26 15:52:39 -0500 |
| commit | ef0b75d3d8afccebd3b9822de6bcae358d4bc0e3 (patch) | |
| tree | 9a1e0c04a8a3ecd641f0e219991eaf6ce98eefed /arch/riscv/cpu/ax25/cache.c | |
| parent | 6b21502229035779059493b2193fd790448fe85e (diff) | |
| parent | 52923c6db7f00e0197ec894c8c1bb8a7681974bb (diff) | |
Merge git://git.denx.de/u-boot-riscv
Diffstat (limited to 'arch/riscv/cpu/ax25/cache.c')
| -rw-r--r-- | arch/riscv/cpu/ax25/cache.c | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/arch/riscv/cpu/ax25/cache.c b/arch/riscv/cpu/ax25/cache.c new file mode 100644 index 00000000000..6600ac2fac1 --- /dev/null +++ b/arch/riscv/cpu/ax25/cache.c @@ -0,0 +1,95 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2017 Andes Technology Corporation + * Rick Chen, Andes Technology Corporation <rick@andestech.com> + */ + +#include <common.h> + +void icache_enable(void) +{ +#ifndef CONFIG_SYS_ICACHE_OFF +#ifdef CONFIG_RISCV_NDS + asm volatile ( + "csrr t1, mcache_ctl\n\t" + "ori t0, t1, 0x1\n\t" + "csrw mcache_ctl, t0\n\t" + ); +#endif +#endif +} + +void icache_disable(void) +{ +#ifndef CONFIG_SYS_ICACHE_OFF +#ifdef CONFIG_RISCV_NDS + asm volatile ( + "fence.i\n\t" + "csrr t1, mcache_ctl\n\t" + "andi t0, t1, ~0x1\n\t" + "csrw mcache_ctl, t0\n\t" + ); +#endif +#endif +} + +void dcache_enable(void) +{ +#ifndef CONFIG_SYS_DCACHE_OFF +#ifdef CONFIG_RISCV_NDS + asm volatile ( + "csrr t1, mcache_ctl\n\t" + "ori t0, t1, 0x2\n\t" + "csrw mcache_ctl, t0\n\t" + ); +#endif +#endif +} + +void dcache_disable(void) +{ +#ifndef CONFIG_SYS_DCACHE_OFF +#ifdef CONFIG_RISCV_NDS + asm volatile ( + "fence\n\t" + "csrr t1, mcache_ctl\n\t" + "andi t0, t1, ~0x2\n\t" + "csrw mcache_ctl, t0\n\t" + ); +#endif +#endif +} + +int icache_status(void) +{ + int ret = 0; + +#ifdef CONFIG_RISCV_NDS + asm volatile ( + "csrr t1, mcache_ctl\n\t" + "andi %0, t1, 0x01\n\t" + : "=r" (ret) + : + : "memory" + ); +#endif + + return ret; +} + +int dcache_status(void) +{ + int ret = 0; + +#ifdef CONFIG_RISCV_NDS + asm volatile ( + "csrr t1, mcache_ctl\n\t" + "andi %0, t1, 0x02\n\t" + : "=r" (ret) + : + : "memory" + ); +#endif + + return ret; +} |