| // SPDX-License-Identifier: GPL-2.0+ |
| /* |
| * Copyright (c) 2025 Yao Zi <ziyao@disroot.org> |
| */ |
| |
| #include <asm/io.h> |
| #include <cpu_func.h> |
| #include <linux/bitops.h> |
| |
| #define CSR_MHCR 0x7c1 |
| #define CSR_MHCR_IE BIT(0) |
| #define CSR_MHCR_DE BIT(1) |
| |
| #if CONFIG_IS_ENABLED(RISCV_MMODE) |
| void icache_enable(void) |
| { |
| csr_write(CSR_MHCR, csr_read(CSR_MHCR) | CSR_MHCR_IE); |
| } |
| |
| void dcache_enable(void) |
| { |
| csr_write(CSR_MHCR, csr_read(CSR_MHCR) | CSR_MHCR_DE); |
| } |
| |
| int icache_status(void) |
| { |
| return (csr_read(CSR_MHCR) & CSR_MHCR_IE) != 0; |
| } |
| |
| int dcache_status(void) |
| { |
| return (csr_read(CSR_MHCR) & CSR_MHCR_DE) != 0; |
| } |
| #endif /* CONFIG_IS_ENABLED(RISCV_MMODE) */ |
