diff options
Diffstat (limited to 'arch/sh/include/cpu-sh2')
| -rw-r--r-- | arch/sh/include/cpu-sh2/cpu/cache.h | 40 | ||||
| -rw-r--r-- | arch/sh/include/cpu-sh2/cpu/freq.h | 15 | ||||
| -rw-r--r-- | arch/sh/include/cpu-sh2/cpu/watchdog.h | 66 |
3 files changed, 121 insertions, 0 deletions
diff --git a/arch/sh/include/cpu-sh2/cpu/cache.h b/arch/sh/include/cpu-sh2/cpu/cache.h new file mode 100644 index 0000000000..070aa9f50d --- /dev/null +++ b/arch/sh/include/cpu-sh2/cpu/cache.h @@ -0,0 +1,40 @@ +/* SPDX-License-Identifier: GPL-2.0 + * + * include/asm-sh/cpu-sh2/cache.h + * + * Copyright (C) 2003 Paul Mundt + */ +#ifndef __ASM_CPU_SH2_CACHE_H +#define __ASM_CPU_SH2_CACHE_H + +#define L1_CACHE_SHIFT 4 + +#define SH_CACHE_VALID 1 +#define SH_CACHE_UPDATED 2 +#define SH_CACHE_COMBINED 4 +#define SH_CACHE_ASSOC 8 + +#if defined(CONFIG_CPU_SUBTYPE_SH7619) +#define SH_CCR 0xffffffec + +#define CCR_CACHE_CE 0x01 /* Cache enable */ +#define CCR_CACHE_WT 0x02 /* CCR[bit1=1,bit2=1] */ + /* 0x00000000-0x7fffffff: Write-through */ + /* 0x80000000-0x9fffffff: Write-back */ + /* 0xc0000000-0xdfffffff: Write-through */ +#define CCR_CACHE_CB 0x04 /* CCR[bit1=0,bit2=0] */ + /* 0x00000000-0x7fffffff: Write-back */ + /* 0x80000000-0x9fffffff: Write-through */ + /* 0xc0000000-0xdfffffff: Write-back */ +#define CCR_CACHE_CF 0x08 /* Cache invalidate */ + +#define CACHE_OC_ADDRESS_ARRAY 0xf0000000 +#define CACHE_OC_DATA_ARRAY 0xf1000000 + +#define CCR_CACHE_ENABLE CCR_CACHE_CE +#define CCR_CACHE_INVALIDATE CCR_CACHE_CF +#define CACHE_PHYSADDR_MASK 0x1ffffc00 + +#endif + +#endif /* __ASM_CPU_SH2_CACHE_H */ diff --git a/arch/sh/include/cpu-sh2/cpu/freq.h b/arch/sh/include/cpu-sh2/cpu/freq.h new file mode 100644 index 0000000000..fb2e5d2831 --- /dev/null +++ b/arch/sh/include/cpu-sh2/cpu/freq.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: GPL-2.0 + * + * include/asm-sh/cpu-sh2/freq.h + * + * Copyright (C) 2006 Yoshinori Sato + */ +#ifndef __ASM_CPU_SH2_FREQ_H +#define __ASM_CPU_SH2_FREQ_H + +#if defined(CONFIG_CPU_SUBTYPE_SH7619) +#define FREQCR 0xf815ff80 +#endif + +#endif /* __ASM_CPU_SH2_FREQ_H */ + diff --git a/arch/sh/include/cpu-sh2/cpu/watchdog.h b/arch/sh/include/cpu-sh2/cpu/watchdog.h new file mode 100644 index 0000000000..141fe296d7 --- /dev/null +++ b/arch/sh/include/cpu-sh2/cpu/watchdog.h @@ -0,0 +1,66 @@ +/* SPDX-License-Identifier: GPL-2.0 + * + * include/asm-sh/cpu-sh2/watchdog.h + * + * Copyright (C) 2002, 2003 Paul Mundt + */ +#ifndef __ASM_CPU_SH2_WATCHDOG_H +#define __ASM_CPU_SH2_WATCHDOG_H + +/* + * More SH-2 brilliance .. its not good enough that we can't read + * and write the same sizes to WTCNT, now we have to read and write + * with different sizes at different addresses for WTCNT _and_ RSTCSR. + * + * At least on the bright side no one has managed to screw over WTCSR + * in this fashion .. yet. + */ +/* Register definitions */ +#define WTCNT 0xfffffe80 +#define WTCSR 0xfffffe80 +#define RSTCSR 0xfffffe82 + +#define WTCNT_R (WTCNT + 1) +#define RSTCSR_R (RSTCSR + 1) + +/* Bit definitions */ +#define WTCSR_IOVF 0x80 +#define WTCSR_WT 0x40 +#define WTCSR_TME 0x20 +#define WTCSR_RSTS 0x00 + +#define RSTCSR_RSTS 0x20 + +/** + * sh_wdt_read_rstcsr - Read from Reset Control/Status Register + * + * Reads back the RSTCSR value. + */ +static inline __u8 sh_wdt_read_rstcsr(void) +{ + /* + * Same read/write brain-damage as for WTCNT here.. + */ + return __raw_readb(RSTCSR_R); +} + +/** + * sh_wdt_write_csr - Write to Reset Control/Status Register + * + * @val: Value to write + * + * Writes the given value @val to the lower byte of the control/status + * register. The upper byte is set manually on each write. + */ +static inline void sh_wdt_write_rstcsr(__u8 val) +{ + /* + * Note: Due to the brain-damaged nature of this register, + * we can't presently touch the WOVF bit, since the upper byte + * has to be swapped for this. So just leave it alone.. + */ + __raw_writeb((WTCNT_HIGH << 8) | (__u16)val, RSTCSR); +} + +#endif /* __ASM_CPU_SH2_WATCHDOG_H */ + |