projects / people / ms / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 5f79644d MF |
1 | /* |
| 2 | * CF IDE addon card code | |
| 3 | * | |
| 4 | * Enter bugs at http://blackfin.uclinux.org/ | |
| 5 | * | |
| 6 | * Copyright (c) 2005-2009 Analog Devices Inc. | |
| 7 | * | |
| 8 | * Licensed under the GPL-2 or later. | |
| 9 | */ | |
| 10 | ||
| 11 | #include <common.h> | |
| 12 | #include <config.h> | |
| 13 | #include <asm/blackfin.h> | |
| 5f79644d MF |
14 | |
| 15 | void cf_outb(unsigned char val, volatile unsigned char *addr) | |
| 16 | { | |
| 17 | /* "ETHERNET" means the expansion memory banks */ | |
| 18 | swap_to(ETHERNET); | |
| 19 | ||
| 20 | *addr = val; | |
| 21 | SSYNC(); | |
| 22 | ||
| 23 | swap_to(FLASH); | |
| 24 | } | |
| 25 | ||
| 26 | unsigned char cf_inb(volatile unsigned char *addr) | |
| 27 | { | |
| 28 | unsigned char c; | |
| 29 | ||
| 30 | swap_to(ETHERNET); | |
| 31 | ||
| 32 | c = *addr; | |
| 33 | SSYNC(); | |
| 34 | ||
| 35 | swap_to(FLASH); | |
| 36 | ||
| 37 | return c; | |
| 38 | } | |
| 39 | ||
| 40 | void cf_insw(unsigned short *sect_buf, unsigned short *addr, int words) | |
| 41 | { | |
| 42 | int i; | |
| 43 | ||
| 44 | swap_to(ETHERNET); | |
| 45 | ||
| 46 | for (i = 0; i < words; i++) { | |
| 47 | *(sect_buf + i) = *addr; | |
| 48 | SSYNC(); | |
| 49 | } | |
| 50 | ||
| 51 | swap_to(FLASH); | |
| 52 | } | |
| 53 | ||
| 54 | void cf_outsw(unsigned short *addr, unsigned short *sect_buf, int words) | |
| 55 | { | |
| 56 | int i; | |
| 57 | ||
| 58 | swap_to(ETHERNET); | |
| 59 | ||
| 60 | for (i = 0; i < words; i++) { | |
| 61 | *addr = *(sect_buf + i); | |
| 62 | SSYNC(); | |
| 63 | } | |
| 64 | ||
| 65 | swap_to(FLASH); | |
| 66 | } | |
| 67 | ||
| 9280c3f1 MF |
68 | /* Definitions used in Compact Flash Boot support */ |
| 69 | #define FIO_EDGE_CF_BITS 0x0000 | |
| 70 | #define FIO_POLAR_CF_BITS 0x0000 | |
| 71 | #define FIO_EDGE_BITS 0x1E0 | |
| 72 | #define FIO_POLAR_BITS 0x160 | |
| 73 | ||
| 74 | /* Compact flash status bits in status register */ | |
| 75 | #define CF_STAT_BITS 0x00000060 | |
| 76 | ||
| 5f79644d MF |
77 | void cf_ide_init(void) |
| 78 | { | |
| 79 | int i, cf_stat; | |
| 80 | ||
| 81 | /* Check whether CF card is inserted */ | |
| 82 | bfin_write_FIO_EDGE(FIO_EDGE_CF_BITS); | |
| 83 | bfin_write_FIO_POLAR(FIO_POLAR_CF_BITS); | |
| 84 | for (i = 0; i < 0x300; i++) | |
| 85 | asm volatile("nop;"); | |
| 86 | ||
| 87 | cf_stat = bfin_read_FIO_FLAG_S() & CF_STAT_BITS; | |
| 88 | ||
| 89 | bfin_write_FIO_EDGE(FIO_EDGE_BITS); | |
| 90 | bfin_write_FIO_POLAR(FIO_POLAR_BITS); | |
| 91 | ||
| 92 | if (!cf_stat) { | |
| 93 | for (i = 0; i < 0x3000; i++) | |
| 94 | asm volatile("nop;"); | |
| 95 | ||
| 96 | ide_init(); | |
| 97 | } | |
| 98 | } |