diff options
Diffstat (limited to 'firmware/target/sh/archos/ata-archos.c')
-rwxr-xr-x | firmware/target/sh/archos/ata-archos.c | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/firmware/target/sh/archos/ata-archos.c b/firmware/target/sh/archos/ata-archos.c new file mode 100755 index 0000000000..73e56b8d84 --- /dev/null +++ b/firmware/target/sh/archos/ata-archos.c | |||
@@ -0,0 +1,76 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2006 by Jens Arnold | ||
11 | * | ||
12 | * All files in this archive are subject to the GNU General Public License. | ||
13 | * See the file COPYING in the source tree root for full license agreement. | ||
14 | * | ||
15 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
16 | * KIND, either express or implied. | ||
17 | * | ||
18 | ****************************************************************************/ | ||
19 | |||
20 | #include "config.h" | ||
21 | #include "cpu.h" | ||
22 | #include <stdbool.h> | ||
23 | #include "kernel.h" | ||
24 | #include "system.h" | ||
25 | #include "ata-target.h" | ||
26 | #include "hwcompat.h" | ||
27 | |||
28 | volatile unsigned char* ata_control; | ||
29 | int ata_io_address; /* 0x300 or 0x200 */ | ||
30 | |||
31 | void ata_reset(void) | ||
32 | { | ||
33 | /* state HRR0 */ | ||
34 | and_b(~0x02, &PADRH); /* assert _RESET */ | ||
35 | sleep(1); /* > 25us */ | ||
36 | |||
37 | /* state HRR1 */ | ||
38 | or_b(0x02, &PADRH); /* negate _RESET */ | ||
39 | sleep(1); /* > 2ms */ | ||
40 | } | ||
41 | |||
42 | void ata_address_detect(void) | ||
43 | { | ||
44 | if (read_hw_mask() & ATA_ADDRESS_200) | ||
45 | { | ||
46 | ata_io_address = 0x200; /* For debug purposes only */ | ||
47 | ata_control = ATA_CONTROL1; | ||
48 | } | ||
49 | else | ||
50 | { | ||
51 | ata_io_address = 0x300; /* For debug purposes only */ | ||
52 | ata_control = ATA_CONTROL2; | ||
53 | } | ||
54 | } | ||
55 | |||
56 | void ata_enable(bool on) | ||
57 | { | ||
58 | if(on) | ||
59 | and_b(~0x80, &PADRL); /* enable ATA */ | ||
60 | else | ||
61 | or_b(0x80, &PADRL); /* disable ATA */ | ||
62 | |||
63 | or_b(0x80, &PAIORL); | ||
64 | } | ||
65 | |||
66 | void ata_device_init(void) | ||
67 | { | ||
68 | or_b(0x02, &PAIORH); /* output for ATA reset */ | ||
69 | or_b(0x02, &PADRH); /* release ATA reset */ | ||
70 | PACR2 &= 0xBFFF; /* GPIO function for PA7 (IDE enable) */ | ||
71 | } | ||
72 | |||
73 | bool ata_is_coldstart(void) | ||
74 | { | ||
75 | return (PACR2 & 0x4000) != 0; | ||
76 | } | ||