mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-13 14:46:21 +09:00
3a197b2fe4
Some CPUs like PPC, BLACKFIN need sync() to ensure cfi flash write command is fully finished. The sync() is defined in each CPU's io.h file. For those CPUs which do not need sync for now, a dummy sync() is defined in their io.h as well. Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com>
128 lines
4.7 KiB
C
128 lines
4.7 KiB
C
/*
|
|
* U-boot - io.h IO routines
|
|
*
|
|
* Copyright (c) 2005 blackfin.uclinux.org
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*/
|
|
|
|
#ifndef _BLACKFIN_IO_H
|
|
#define _BLACKFIN_IO_H
|
|
|
|
static inline void sync(void)
|
|
{
|
|
__asm__ __volatile__ asm("ssync" : : : "memory");
|
|
}
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
#include <linux/config.h>
|
|
|
|
/* function prototypes for CF support */
|
|
extern void cf_outsw(unsigned short *addr, unsigned short *sect_buf, int words);
|
|
extern void cf_insw(unsigned short *sect_buf, unsigned short *addr, int words);
|
|
extern unsigned char cf_inb(volatile unsigned char *addr);
|
|
extern void cf_outb(unsigned char val, volatile unsigned char* addr);
|
|
|
|
/*
|
|
* These are for ISA/PCI shared memory _only_ and should never be used
|
|
* on any other type of memory, including Zorro memory. They are meant to
|
|
* access the bus in the bus byte order which is little-endian!.
|
|
*
|
|
* readX/writeX() are used to access memory mapped devices. On some
|
|
* architectures the memory mapped IO stuff needs to be accessed
|
|
* differently. On the m68k architecture, we just read/write the
|
|
* memory location directly.
|
|
*/
|
|
|
|
|
|
#define readb(addr) ({ unsigned char __v = (*(volatile unsigned char *) (addr));asm("ssync;"); __v; })
|
|
#define readw(addr) ({ unsigned short __v = (*(volatile unsigned short *) (addr)); asm("ssync;");__v; })
|
|
#define readl(addr) ({ unsigned int __v = (*(volatile unsigned int *) (addr));asm("ssync;"); __v; })
|
|
|
|
#define writeb(b,addr) {((*(volatile unsigned char *) (addr)) = (b)); asm("ssync;");}
|
|
#define writew(b,addr) {((*(volatile unsigned short *) (addr)) = (b)); asm("ssync;");}
|
|
#define writel(b,addr) {((*(volatile unsigned int *) (addr)) = (b)); asm("ssync;");}
|
|
|
|
#define memset_io(a,b,c) memset((void *)(a),(b),(c))
|
|
#define memcpy_fromio(a,b,c) memcpy((a),(void *)(b),(c))
|
|
#define memcpy_toio(a,b,c) memcpy((void *)(a),(b),(c))
|
|
|
|
#define inb_p(addr) readb((addr) + BF533_PCIIO_BASE)
|
|
#define inb(addr) cf_inb((volatile unsigned char*)(addr))
|
|
|
|
#define outb(x,addr) cf_outb((unsigned char)(x), (volatile unsigned char*)(addr))
|
|
#define outb_p(x,addr) outb(x, (addr) + BF533_PCIIO_BASE)
|
|
|
|
#define inw(addr) readw((addr) + BF533_PCIIO_BASE)
|
|
#define inl(addr) readl((addr) + BF533_PCIIO_BASE)
|
|
|
|
#define outw(x,addr) writew(x, (addr) + BF533_PCIIO_BASE)
|
|
#define outl(x,addr) writel(x, (addr) + BF533_PCIIO_BASE)
|
|
|
|
#define insb(port, addr, count) memcpy((void*)addr, (void*)(BF533_PCIIO_BASE + port), count)
|
|
#define insw(port, addr, count) cf_insw((unsigned short*)addr, (unsigned short*)(port), (count))
|
|
#define insl(port, addr, count) memcpy((void*)addr, (void*)(BF533_PCIIO_BASE + port), (4*count))
|
|
|
|
#define outsb(port,addr,count) memcpy((void*)(BF533_PCIIO_BASE + port), (void*)addr, count)
|
|
#define outsw(port,addr,count) cf_outsw((unsigned short*)(port), (unsigned short*)addr, (count))
|
|
#define outsl(port,addr,count) memcpy((void*)(BF533_PCIIO_BASE + port), (void*)addr, (4*count))
|
|
|
|
#define IO_SPACE_LIMIT 0xffff
|
|
|
|
/* Values for nocacheflag and cmode */
|
|
#define IOMAP_FULL_CACHING 0
|
|
#define IOMAP_NOCACHE_SER 1
|
|
#define IOMAP_NOCACHE_NONSER 2
|
|
#define IOMAP_WRITETHROUGH 3
|
|
|
|
extern void *__ioremap(unsigned long physaddr, unsigned long size,
|
|
int cacheflag);
|
|
extern void __iounmap(void *addr, unsigned long size);
|
|
|
|
extern inline void *ioremap(unsigned long physaddr, unsigned long size)
|
|
{
|
|
return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
|
|
}
|
|
extern inline void *ioremap_nocache(unsigned long physaddr,
|
|
unsigned long size)
|
|
{
|
|
return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
|
|
}
|
|
extern inline void *ioremap_writethrough(unsigned long physaddr,
|
|
unsigned long size)
|
|
{
|
|
return __ioremap(physaddr, size, IOMAP_WRITETHROUGH);
|
|
}
|
|
extern inline void *ioremap_fullcache(unsigned long physaddr,
|
|
unsigned long size)
|
|
{
|
|
return __ioremap(physaddr, size, IOMAP_FULL_CACHING);
|
|
}
|
|
|
|
extern void iounmap(void *addr);
|
|
|
|
extern void blkfin_inv_cache_all(void);
|
|
#define dma_cache_inv(_start,_size) do { blkfin_inv_cache_all();} while (0)
|
|
#define dma_cache_wback(_start,_size) do { } while (0)
|
|
#define dma_cache_wback_inv(_start,_size) do { blkfin_inv_cache_all();} while (0)
|
|
|
|
#endif
|
|
#endif
|