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author | H. Nikolaus Schaller <hns@goldelico.com> | 2012-03-26 20:55:28 +0200 |
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committer | H. Nikolaus Schaller <hns@goldelico.com> | 2012-03-26 20:55:28 +0200 |
commit | 92988a21ad4c4c9504295ccb580c9f806134471b (patch) | |
tree | 5effc9f14170112450de05c67dafbe8d5034d595 /u-boot/board/bf533-stamp/ide-cf.c | |
parent | ca2b506783b676c95762c54ea24dcfdaae1947c9 (diff) | |
download | bootable_bootloader_goldelico_gta04-92988a21ad4c4c9504295ccb580c9f806134471b.zip bootable_bootloader_goldelico_gta04-92988a21ad4c4c9504295ccb580c9f806134471b.tar.gz bootable_bootloader_goldelico_gta04-92988a21ad4c4c9504295ccb580c9f806134471b.tar.bz2 |
added boot script files to repository
Diffstat (limited to 'u-boot/board/bf533-stamp/ide-cf.c')
-rw-r--r-- | u-boot/board/bf533-stamp/ide-cf.c | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/u-boot/board/bf533-stamp/ide-cf.c b/u-boot/board/bf533-stamp/ide-cf.c new file mode 100644 index 0000000..3e4080e --- /dev/null +++ b/u-boot/board/bf533-stamp/ide-cf.c @@ -0,0 +1,98 @@ +/* + * 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> + +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); +} + +/* Definitions used in Compact Flash Boot support */ +#define FIO_EDGE_CF_BITS 0x0000 +#define FIO_POLAR_CF_BITS 0x0000 +#define FIO_EDGE_BITS 0x1E0 +#define FIO_POLAR_BITS 0x160 + +/* Compact flash status bits in status register */ +#define CF_STAT_BITS 0x00000060 + +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(); + } +} |