mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-20 08:58:52 +09:00
![Christophe Leroy](/assets/img/avatar_default.png)
Avoid unnecessary assembly functions when they can easily be written in C. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
145 lines
4.0 KiB
C
145 lines
4.0 KiB
C
/*
|
|
* include/asm-ppc/cache.h
|
|
*/
|
|
#ifndef __ARCH_PPC_CACHE_H
|
|
#define __ARCH_PPC_CACHE_H
|
|
|
|
#include <asm/processor.h>
|
|
|
|
/* bytes per L1 cache line */
|
|
#if defined(CONFIG_8xx)
|
|
#define L1_CACHE_SHIFT 4
|
|
#elif defined(CONFIG_PPC64BRIDGE)
|
|
#define L1_CACHE_SHIFT 7
|
|
#elif defined(CONFIG_E500MC)
|
|
#define L1_CACHE_SHIFT 6
|
|
#else
|
|
#define L1_CACHE_SHIFT 5
|
|
#endif
|
|
|
|
#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
|
|
|
|
/*
|
|
* Use the L1 data cache line size value for the minimum DMA buffer alignment
|
|
* on PowerPC.
|
|
*/
|
|
#define ARCH_DMA_MINALIGN L1_CACHE_BYTES
|
|
|
|
/*
|
|
* 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);
|
|
extern void invalidate_icache(void);
|
|
#ifdef CONFIG_SYS_INIT_RAM_LOCK
|
|
extern void unlock_ram_in_cache(void);
|
|
#endif /* CONFIG_SYS_INIT_RAM_LOCK */
|
|
#endif /* __ASSEMBLY__ */
|
|
|
|
#if defined(__KERNEL__) && !defined(__ASSEMBLY__)
|
|
int l2cache_init(void);
|
|
void enable_cpc(void);
|
|
void disable_cpc_sram(void);
|
|
#endif
|
|
|
|
/* 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 */
|
|
|
|
#if !defined(__ASSEMBLY__)
|
|
static inline uint rd_ic_cst(void)
|
|
{
|
|
return mfspr(IC_CST);
|
|
}
|
|
|
|
static inline void wr_ic_cst(uint val)
|
|
{
|
|
mtspr(IC_CST, val);
|
|
}
|
|
|
|
static inline void wr_ic_adr(uint val)
|
|
{
|
|
mtspr(IC_ADR, val);
|
|
}
|
|
|
|
static inline uint rd_dc_cst(void)
|
|
{
|
|
return mfspr(DC_CST);
|
|
}
|
|
|
|
static inline void wr_dc_cst(uint val)
|
|
{
|
|
mtspr(DC_CST, val);
|
|
}
|
|
|
|
static inline void wr_dc_adr(uint val)
|
|
{
|
|
mtspr(DC_ADR, val);
|
|
}
|
|
#endif
|
|
#endif /* CONFIG_8xx */
|
|
|
|
#endif
|