[people/ms/u-boot.git] / include / asm-ppc / cache.h

/*
 * include/asm-ppc/cache.h
 */
#ifndef __ARCH_PPC_CACHE_H
#define __ARCH_PPC_CACHE_H

#include <linux/config.h>
#include <asm/processor.h>

/* bytes per L1 cache line */
#if defined(CONFIG_8xx) || defined(CONFIG_IOP480)
#define	L1_CACHE_SHIFT	4
#elif defined(CONFIG_PPC64BRIDGE)
#define L1_CACHE_SHIFT	7
#else
#define	L1_CACHE_SHIFT	5
#endif

#define L1_CACHE_BYTES          (1 << L1_CACHE_SHIFT)

/*
 * For compatibility reasons support the CONFIG_SYS_CACHELINE_SIZE too
 */
#ifndef CONFIG_SYS_CACHELINE_SIZE
#define CONFIG_SYS_CACHELINE_SIZE	L1_CACHE_BYTES
#endif

#define	L1_CACHE_ALIGN(x)       (((x)+(L1_CACHE_BYTES-1))&~(L1_CACHE_BYTES-1))
#define	L1_CACHE_PAGES		8

#define	SMP_CACHE_BYTES L1_CACHE_BYTES

#ifdef MODULE
#define __cacheline_aligned __attribute__((__aligned__(L1_CACHE_BYTES)))
#else
#define __cacheline_aligned					\
  __attribute__((__aligned__(L1_CACHE_BYTES),			\
		 __section__(".data.cacheline_aligned")))
#endif

#if defined(__KERNEL__) && !defined(__ASSEMBLY__)
extern void flush_dcache_range(unsigned long start, unsigned long stop);
extern void clean_dcache_range(unsigned long start, unsigned long stop);
extern void invalidate_dcache_range(unsigned long start, unsigned long stop);
extern void flush_dcache(void);
extern void invalidate_dcache(void);
#ifdef CONFIG_SYS_INIT_RAM_LOCK
extern void unlock_ram_in_cache(void);
#endif /* CONFIG_SYS_INIT_RAM_LOCK */
#endif /* __ASSEMBLY__ */

/* prep registers for L2 */
#define CACHECRBA       0x80000823      /* Cache configuration register address */
#define L2CACHE_MASK	0x03	/* Mask for 2 L2 Cache bits */
#define L2CACHE_512KB	0x00	/* 512KB */
#define L2CACHE_256KB	0x01	/* 256KB */
#define L2CACHE_1MB	0x02	/* 1MB */
#define L2CACHE_NONE	0x03	/* NONE */
#define L2CACHE_PARITY  0x08    /* Mask for L2 Cache Parity Protected bit */

#ifdef CONFIG_8xx
/* Cache control on the MPC8xx is provided through some additional
 * special purpose registers.
 */
#define IC_CST		560	/* Instruction cache control/status */
#define IC_ADR		561	/* Address needed for some commands */
#define IC_DAT		562	/* Read-only data register */
#define DC_CST		568	/* Data cache control/status */
#define DC_ADR		569	/* Address needed for some commands */
#define DC_DAT		570	/* Read-only data register */

/* Commands.  Only the first few are available to the instruction cache.
*/
#define	IDC_ENABLE	0x02000000	/* Cache enable */
#define IDC_DISABLE	0x04000000	/* Cache disable */
#define IDC_LDLCK	0x06000000	/* Load and lock */
#define IDC_UNLINE	0x08000000	/* Unlock line */
#define IDC_UNALL	0x0a000000	/* Unlock all */
#define IDC_INVALL	0x0c000000	/* Invalidate all */

#define DC_FLINE	0x0e000000	/* Flush data cache line */
#define DC_SFWT		0x01000000	/* Set forced writethrough mode */
#define DC_CFWT		0x03000000	/* Clear forced writethrough mode */
#define DC_SLES		0x05000000	/* Set little endian swap mode */
#define DC_CLES		0x07000000	/* Clear little endian swap mode */

/* Status.
*/
#define IDC_ENABLED	0x80000000	/* Cache is enabled */
#define IDC_CERR1	0x00200000	/* Cache error 1 */
#define IDC_CERR2	0x00100000	/* Cache error 2 */
#define IDC_CERR3	0x00080000	/* Cache error 3 */

#define DC_DFWT		0x40000000	/* Data cache is forced write through */
#define DC_LES		0x20000000	/* Caches are little endian mode */
#endif /* CONFIG_8xx */

#endif
Commit	Line	Data
416fef1a WD	1	/*
	2	* include/asm-ppc/cache.h
	3	*/
	4	#ifndef __ARCH_PPC_CACHE_H
	5	#define __ARCH_PPC_CACHE_H
	6
	7	#include <linux/config.h>
	8	#include <asm/processor.h>
	9
	10	/* bytes per L1 cache line */
b009f3ec KG	11	#if defined(CONFIG_8xx) \|\| defined(CONFIG_IOP480)
	12	#define L1_CACHE_SHIFT 4
	13	#elif defined(CONFIG_PPC64BRIDGE)
9b94ac61	14	#define L1_CACHE_SHIFT 7
416fef1a	15	#else
9b94ac61	16	#define L1_CACHE_SHIFT 5
b009f3ec	17	#endif
9b94ac61 SR	18
	19	#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
	20
	21	/*
6d0f6bcf	22	* For compatibility reasons support the CONFIG_SYS_CACHELINE_SIZE too
9b94ac61	23	*/
6d0f6bcf JCPV	24	#ifndef CONFIG_SYS_CACHELINE_SIZE
6d0f6bcf JCPV	25	#define CONFIG_SYS_CACHELINE_SIZE L1_CACHE_BYTES
9b94ac61	26	#endif
416fef1a WD	27
	28	#define L1_CACHE_ALIGN(x) (((x)+(L1_CACHE_BYTES-1))&~(L1_CACHE_BYTES-1))
	29	#define L1_CACHE_PAGES 8
	30
	31	#define SMP_CACHE_BYTES L1_CACHE_BYTES
	32
	33	#ifdef MODULE
	34	#define __cacheline_aligned __attribute__((__aligned__(L1_CACHE_BYTES)))
	35	#else
	36	#define __cacheline_aligned \
	37	__attribute__((__aligned__(L1_CACHE_BYTES), \
	38	__section__(".data.cacheline_aligned")))
	39	#endif
	40
	41	#if defined(__KERNEL__) && !defined(__ASSEMBLY__)
	42	extern void flush_dcache_range(unsigned long start, unsigned long stop);
	43	extern void clean_dcache_range(unsigned long start, unsigned long stop);
	44	extern void invalidate_dcache_range(unsigned long start, unsigned long stop);
9b94ac61 SR	45	extern void flush_dcache(void);
9b94ac61 SR	46	extern void invalidate_dcache(void);
6d0f6bcf	47	#ifdef CONFIG_SYS_INIT_RAM_LOCK
416fef1a	48	extern void unlock_ram_in_cache(void);
6d0f6bcf	49	#endif /* CONFIG_SYS_INIT_RAM_LOCK */
416fef1a WD	50	#endif /* __ASSEMBLY__ */
	51
	52	/* prep registers for L2 */
	53	#define CACHECRBA 0x80000823 /* Cache configuration register address */
	54	#define L2CACHE_MASK 0x03 /* Mask for 2 L2 Cache bits */
	55	#define L2CACHE_512KB 0x00 /* 512KB */
	56	#define L2CACHE_256KB 0x01 /* 256KB */
	57	#define L2CACHE_1MB 0x02 /* 1MB */
	58	#define L2CACHE_NONE 0x03 /* NONE */
	59	#define L2CACHE_PARITY 0x08 /* Mask for L2 Cache Parity Protected bit */
	60
	61	#ifdef CONFIG_8xx
	62	/* Cache control on the MPC8xx is provided through some additional
	63	* special purpose registers.
	64	*/
	65	#define IC_CST 560 /* Instruction cache control/status */
	66	#define IC_ADR 561 /* Address needed for some commands */
	67	#define IC_DAT 562 /* Read-only data register */
	68	#define DC_CST 568 /* Data cache control/status */
	69	#define DC_ADR 569 /* Address needed for some commands */
	70	#define DC_DAT 570 /* Read-only data register */
	71
	72	/* Commands. Only the first few are available to the instruction cache.
	73	*/
	74	#define IDC_ENABLE 0x02000000 /* Cache enable */
	75	#define IDC_DISABLE 0x04000000 /* Cache disable */
	76	#define IDC_LDLCK 0x06000000 /* Load and lock */
	77	#define IDC_UNLINE 0x08000000 /* Unlock line */
	78	#define IDC_UNALL 0x0a000000 /* Unlock all */
	79	#define IDC_INVALL 0x0c000000 /* Invalidate all */
	80
	81	#define DC_FLINE 0x0e000000 /* Flush data cache line */
	82	#define DC_SFWT 0x01000000 /* Set forced writethrough mode */
	83	#define DC_CFWT 0x03000000 /* Clear forced writethrough mode */
	84	#define DC_SLES 0x05000000 /* Set little endian swap mode */
	85	#define DC_CLES 0x07000000 /* Clear little endian swap mode */
	86
	87	/* Status.
	88	*/
	89	#define IDC_ENABLED 0x80000000 /* Cache is enabled */
	90	#define IDC_CERR1 0x00200000 /* Cache error 1 */
	91	#define IDC_CERR2 0x00100000 /* Cache error 2 */
	92	#define IDC_CERR3 0x00080000 /* Cache error 3 */
	93
	94	#define DC_DFWT 0x40000000 /* Data cache is forced write through */
	95	#define DC_LES 0x20000000 /* Caches are little endian mode */
	96	#endif /* CONFIG_8xx */
	97
	98	#endif