1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * Copyright (C) 2011 Andes Technology Corporation
4 * Shawn Lin, Andes Technology Corporation <nobuhiro@andestech.com>
5 * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com>
12 int icache_status(void);
13 void icache_enable(void);
14 void icache_disable(void);
15 int dcache_status(void);
16 void dcache_enable(void);
17 void dcache_disable(void);
18 void cache_flush(void);
20 #define DEFINE_GET_SYS_REG(reg) \
21 static inline unsigned long GET_##reg(void) \
25 "mfsr %0, $"#reg : "=&r" (val) : : "memory" \
30 enum cache_t {ICACHE, DCACHE};
31 DEFINE_GET_SYS_REG(ICM_CFG);
32 DEFINE_GET_SYS_REG(DCM_CFG);
33 /* I-cache sets (# of cache lines) per way */
34 #define ICM_CFG_OFF_ISET 0
36 #define ICM_CFG_OFF_IWAY 3
37 #define ICM_CFG_MSK_ISET (0x7 << ICM_CFG_OFF_ISET)
38 #define ICM_CFG_MSK_IWAY (0x7 << ICM_CFG_OFF_IWAY)
39 /* D-cache sets (# of cache lines) per way */
40 #define DCM_CFG_OFF_DSET 0
42 #define DCM_CFG_OFF_DWAY 3
43 #define DCM_CFG_MSK_DSET (0x7 << DCM_CFG_OFF_DSET)
44 #define DCM_CFG_MSK_DWAY (0x7 << DCM_CFG_OFF_DWAY)
45 /* I-cache line size */
46 #define ICM_CFG_OFF_ISZ 6
47 #define ICM_CFG_MSK_ISZ (0x7UL << ICM_CFG_OFF_ISZ)
48 /* D-cache line size */
49 #define DCM_CFG_OFF_DSZ 6
50 #define DCM_CFG_MSK_DSZ (0x7UL << DCM_CFG_OFF_DSZ)
53 * The current upper bound for NDS32 L1 data cache line sizes is 32 bytes.
54 * We use that value for aligning DMA buffers unless the board config has
55 * specified an alternate cache line size.
57 #ifdef CONFIG_SYS_CACHELINE_SIZE
58 #define ARCH_DMA_MINALIGN CONFIG_SYS_CACHELINE_SIZE
60 #define ARCH_DMA_MINALIGN 32
63 #endif /* _ASM_CACHE_H */