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Blackfin: bf533-stamp: split and cleanup CF/IDE code

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Give the CF/IDE code its own file to keep things cleanly separated.  While
we're here, clean up the code to use common functions.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
This commit is contained in:
Mike Frysinger 2009-11-30 13:08:39 -05:00
parent e54c820991
commit 5f79644d26
3 changed files with 94 additions and 110 deletions
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1
board/bf533-stamp/Makefile
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@ -30,6 +30,7 @@ include $(TOPDIR)/config.mk
LIB = $(obj)lib$(BOARD).a LIB = $(obj)lib$(BOARD).a
COBJS-y := $(BOARD).o COBJS-y := $(BOARD).o
COBJS-$(CONFIG_STAMP_CF) += ide-cf.o
COBJS-$(CONFIG_VIDEO) += video.o COBJS-$(CONFIG_VIDEO) += video.o
SRCS := $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c) SRCS := $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c)

113
board/bf533-stamp/bf533-stamp.c
View File

@ -62,118 +62,11 @@ void swap_to(int device_id)
/* miscellaneous platform dependent initialisations */ /* miscellaneous platform dependent initialisations */
int misc_init_r(void) int misc_init_r(void)
{ {
int i; #ifdef CONFIG_STAMP_CF
int cf_stat = 0; cf_ide_init();
/* Check whether CF card is inserted */
*pFIO_EDGE = FIO_EDGE_CF_BITS;
*pFIO_POLAR = FIO_POLAR_CF_BITS;
for (i = 0; i < 0x300; i++)
asm("nop;");
if ((*pFIO_FLAG_S) & CF_STAT_BITS) {
cf_stat = 0;
} else {
cf_stat = 1;
}
*pFIO_EDGE = FIO_EDGE_BITS;
*pFIO_POLAR = FIO_POLAR_BITS;
if (cf_stat) {
printf("Booting from COMPACT flash\n");
for (i = 0; i < 0x1000; i++)
asm("nop;");
for (i = 0; i < 0x1000; i++)
asm("nop;");
for (i = 0; i < 0x1000; i++)
asm("nop;");
serial_setbrg();
ide_init();
setenv("bootargs", "");
setenv("bootcmd",
"fatload ide 0:1 0x1000000 uImage-stamp;bootm 0x1000000;bootm 0x20100000");
} else {
printf("Booting from FLASH\n");
}
return 0;
}
#endif #endif
#ifdef CONFIG_STAMP_CF return 0;
void cf_outb(unsigned char val, volatile unsigned char *addr)
{
/*
* Set PF1 PF0 respectively to 0 1 to divert address
* to the expansion memory banks
*/
*pFIO_FLAG_S = CF_PF0;
*pFIO_FLAG_C = CF_PF1;
SSYNC();
*(addr) = val;
SSYNC();
/* Setback PF1 PF0 to 0 0 to address external
* memory banks */
*(volatile unsigned short *)pFIO_FLAG_C = CF_PF1_PF0;
SSYNC();
}
unsigned char cf_inb(volatile unsigned char *addr)
{
volatile unsigned char c;
*pFIO_FLAG_S = CF_PF0;
*pFIO_FLAG_C = CF_PF1;
SSYNC();
c = *(addr);
SSYNC();
*pFIO_FLAG_C = CF_PF1_PF0;
SSYNC();
return c;
}
void cf_insw(unsigned short *sect_buf, unsigned short *addr, int words)
{
int i;
*pFIO_FLAG_S = CF_PF0;
*pFIO_FLAG_C = CF_PF1;
SSYNC();
for (i = 0; i < words; i++) {
*(sect_buf + i) = *(addr);
SSYNC();
}
*pFIO_FLAG_C = CF_PF1_PF0;
SSYNC();
}
void cf_outsw(unsigned short *addr, unsigned short *sect_buf, int words)
{
int i;
*pFIO_FLAG_S = CF_PF0;
*pFIO_FLAG_C = CF_PF1;
SSYNC();
for (i = 0; i < words; i++) {
*(addr) = *(sect_buf + i);
SSYNC();
}
*pFIO_FLAG_C = CF_PF1_PF0;
SSYNC();
} }
#endif #endif

90
board/bf533-stamp/ide-cf.c Normal file
View File

@ -0,0 +1,90 @@
/*
* CF IDE addon card code
*
* Enter bugs at http://blackfin.uclinux.org/
*
* Copyright (c) 2005-2009 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
#include <common.h>
#include <config.h>
#include <asm/blackfin.h>
#include "bf533-stamp.h"
void cf_outb(unsigned char val, volatile unsigned char *addr)
{
/* "ETHERNET" means the expansion memory banks */
swap_to(ETHERNET);
*addr = val;
SSYNC();
swap_to(FLASH);
}
unsigned char cf_inb(volatile unsigned char *addr)
{
unsigned char c;
swap_to(ETHERNET);
c = *addr;
SSYNC();
swap_to(FLASH);
return c;
}
void cf_insw(unsigned short *sect_buf, unsigned short *addr, int words)
{
int i;
swap_to(ETHERNET);
for (i = 0; i < words; i++) {
*(sect_buf + i) = *addr;
SSYNC();
}
swap_to(FLASH);
}
void cf_outsw(unsigned short *addr, unsigned short *sect_buf, int words)
{
int i;
swap_to(ETHERNET);
for (i = 0; i < words; i++) {
*addr = *(sect_buf + i);
SSYNC();
}
swap_to(FLASH);
}
void cf_ide_init(void)
{
int i, cf_stat;
/* Check whether CF card is inserted */
bfin_write_FIO_EDGE(FIO_EDGE_CF_BITS);
bfin_write_FIO_POLAR(FIO_POLAR_CF_BITS);
for (i = 0; i < 0x300; i++)
asm volatile("nop;");
cf_stat = bfin_read_FIO_FLAG_S() & CF_STAT_BITS;
bfin_write_FIO_EDGE(FIO_EDGE_BITS);
bfin_write_FIO_POLAR(FIO_POLAR_BITS);
if (!cf_stat) {
for (i = 0; i < 0x3000; i++)
asm volatile("nop;");
ide_init();
}
}