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author | Tom Rini <trini@konsulko.com> | 2023-02-28 01:28:21 +0300 |
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committer | Tom Rini <trini@konsulko.com> | 2023-02-28 01:28:21 +0300 |
commit | 5b197eee334bdf75cc9e9148161299679a5251ea (patch) | |
tree | edec3c21a01fb54d764d04caa2bd774823e76c2d /arch/riscv/cpu/andesv5/cache.c | |
parent | 7a826ded4a0e409d73ff4a910685821d34f1b664 (diff) | |
parent | e8c80ac0f7a13bf0fc016ce324b870c0cff7a2b8 (diff) | |
download | u-boot-5b197eee334bdf75cc9e9148161299679a5251ea.tar.xz |
Merge tag 'v2023.04-rc3' into next
Prepare v2023.04-rc3
Diffstat (limited to 'arch/riscv/cpu/andesv5/cache.c')
-rw-r--r-- | arch/riscv/cpu/andesv5/cache.c | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/arch/riscv/cpu/andesv5/cache.c b/arch/riscv/cpu/andesv5/cache.c new file mode 100644 index 0000000000..40d77f671c --- /dev/null +++ b/arch/riscv/cpu/andesv5/cache.c @@ -0,0 +1,130 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2023 Andes Technology Corporation + * Rick Chen, Andes Technology Corporation <rick@andestech.com> + */ + +#include <asm/csr.h> +#include <asm/asm.h> +#include <common.h> +#include <cache.h> +#include <cpu_func.h> +#include <dm.h> +#include <dm/uclass-internal.h> +#include <asm/arch-andes/csr.h> + +#ifdef CONFIG_V5L2_CACHE +void enable_caches(void) +{ + struct udevice *dev; + int ret; + + ret = uclass_get_device_by_driver(UCLASS_CACHE, + DM_DRIVER_GET(v5l2_cache), + &dev); + if (ret) { + log_debug("Cannot enable v5l2 cache\n"); + } else { + ret = cache_enable(dev); + if (ret) + log_debug("v5l2 cache enable failed\n"); + } +} + +static void cache_ops(int (*ops)(struct udevice *dev)) +{ + struct udevice *dev = NULL; + + uclass_find_first_device(UCLASS_CACHE, &dev); + + if (dev) + ops(dev); +} +#endif + +void flush_dcache_all(void) +{ +#if CONFIG_IS_ENABLED(RISCV_MMODE) + csr_write(CSR_MCCTLCOMMAND, CCTL_L1D_WBINVAL_ALL); +#endif +} + +void flush_dcache_range(unsigned long start, unsigned long end) +{ + flush_dcache_all(); +} + +void invalidate_dcache_range(unsigned long start, unsigned long end) +{ + flush_dcache_all(); +} + +void icache_enable(void) +{ +#if CONFIG_IS_ENABLED(RISCV_MMODE) + asm volatile("csrsi %0, 0x1" :: "i"(CSR_MCACHE_CTL)); +#endif +} + +void icache_disable(void) +{ +#if CONFIG_IS_ENABLED(RISCV_MMODE) + asm volatile("csrci %0, 0x1" :: "i"(CSR_MCACHE_CTL)); +#endif +} + +void dcache_enable(void) +{ +#if CONFIG_IS_ENABLED(RISCV_MMODE) + asm volatile("csrsi %0, 0x2" :: "i"(CSR_MCACHE_CTL)); +#endif + +#ifdef CONFIG_V5L2_CACHE + cache_ops(cache_enable); +#endif +} + +void dcache_disable(void) +{ +#if CONFIG_IS_ENABLED(RISCV_MMODE) + asm volatile("csrci %0, 0x2" :: "i"(CSR_MCACHE_CTL)); +#endif + +#ifdef CONFIG_V5L2_CACHE + cache_ops(cache_disable); +#endif +} + +int icache_status(void) +{ + int ret = 0; + +#if CONFIG_IS_ENABLED(RISCV_MMODE) + asm volatile ( + "csrr t1, %1\n\t" + "andi %0, t1, 0x01\n\t" + : "=r" (ret) + : "i"(CSR_MCACHE_CTL) + : "memory" + ); +#endif + + return !!ret; +} + +int dcache_status(void) +{ + int ret = 0; + +#if CONFIG_IS_ENABLED(RISCV_MMODE) + asm volatile ( + "csrr t1, %1\n\t" + "andi %0, t1, 0x02\n\t" + : "=r" (ret) + : "i" (CSR_MCACHE_CTL) + : "memory" + ); +#endif + + return !!ret; +} |