diff options
Diffstat (limited to 'firmware/target/coldfire/mpio/hd200/system-hd200.c')
-rw-r--r-- | firmware/target/coldfire/mpio/hd200/system-hd200.c | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/firmware/target/coldfire/mpio/hd200/system-hd200.c b/firmware/target/coldfire/mpio/hd200/system-hd200.c new file mode 100644 index 0000000000..06628c0835 --- /dev/null +++ b/firmware/target/coldfire/mpio/hd200/system-hd200.c | |||
@@ -0,0 +1,125 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id:$ | ||
9 | * | ||
10 | * Copyright (C) 2010 Marcin Bukat | ||
11 | * | ||
12 | * This program is free software; you can redistribute it and/or | ||
13 | * modify it under the terms of the GNU General Public License | ||
14 | * as published by the Free Software Foundation; either version 2 | ||
15 | * of the License, or (at your option) any later version. | ||
16 | * | ||
17 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
18 | * KIND, either express or implied. | ||
19 | * | ||
20 | ****************************************************************************/ | ||
21 | #include "config.h" | ||
22 | #include "cpu.h" | ||
23 | #include "kernel.h" | ||
24 | #include "system.h" | ||
25 | #include "power.h" | ||
26 | #include "timer.h" | ||
27 | |||
28 | /* Settings for all possible clock frequencies (with properly working timers) | ||
29 | * | ||
30 | * xxx_REFRESH_TIMER below | ||
31 | * system.h, CPUFREQ_xxx_MULT | | ||
32 | * | | | ||
33 | * V V | ||
34 | * PLLCR & Rftim. IDECONFIG1/IDECONFIG2 | ||
35 | * CPUCLK/Hz MULT ~0x70c00000 16MB CSCR0 CSCR1 CS2Pre CS2Post CS2Wait | ||
36 | * ------------------------------------------------------------------------- | ||
37 | * 11289600 1 0x00000200 4 0x0180 0x0180 1 1 0 | ||
38 | * 22579200 2 0x05028049 10 0x0180 0x0180 1 1 0 | ||
39 | * 33868800 3 0x03024049 15 0x0180 0x0180 1 1 0 | ||
40 | * 45158400 4 0x05028045 21 0x0180 0x0180 1 1 0 | ||
41 | * 56448000 5 0x02028049 26 0x0580 0x0580 2 1 0 | ||
42 | * 67737600 6 0x03024045 32 0x0580 0x0980 2 1 0 | ||
43 | * 79027200 7 0x0302a045 37 0x0580 0x0d80 2 1 0 | ||
44 | * 90316800 8 0x03030045 43 0x0980 0x0d80 2 1 0 | ||
45 | * 101606400 9 0x01024049 48 0x0980 0x1180 2 1 0 | ||
46 | * 112896000 10 0x01028049 54 0x0980 0x1580 3 1 0 | ||
47 | * 124185600 11 0x0102c049 59 0x0980 0x1180 3 1 1 | ||
48 | */ | ||
49 | |||
50 | #define MAX_REFRESH_TIMER 59 | ||
51 | #define NORMAL_REFRESH_TIMER 21 | ||
52 | #define DEFAULT_REFRESH_TIMER 4 | ||
53 | |||
54 | #ifdef HAVE_ADJUSTABLE_CPU_FREQ | ||
55 | void set_cpu_frequency (long) __attribute__ ((section (".icode"))); | ||
56 | void set_cpu_frequency(long frequency) | ||
57 | #else | ||
58 | void cf_set_cpu_frequency (long) __attribute__ ((section (".icode"))); | ||
59 | void cf_set_cpu_frequency(long frequency) | ||
60 | #endif | ||
61 | { | ||
62 | switch(frequency) | ||
63 | { | ||
64 | case CPUFREQ_MAX: | ||
65 | DCR = (0x8200 | DEFAULT_REFRESH_TIMER); | ||
66 | /* Refresh timer for bypass frequency */ | ||
67 | PLLCR &= ~1; /* Bypass mode */ | ||
68 | timers_adjust_prescale(CPUFREQ_DEFAULT_MULT, false); | ||
69 | PLLCR = 0x0102c049 | (PLLCR & 0x70C00000); | ||
70 | CSCR0 = 0x00001180; /* Flash: 4 wait states */ | ||
71 | CSCR3 = 0x00001180; /* LCD: 4 wait states */ | ||
72 | while(!(PLLCR & 0x80000000)) {}; /* Wait until the PLL has locked. | ||
73 | This may take up to 10ms! */ | ||
74 | timers_adjust_prescale(CPUFREQ_MAX_MULT, true); | ||
75 | DCR = (0x8200 | MAX_REFRESH_TIMER); /* Refresh timer */ | ||
76 | cpu_frequency = CPUFREQ_MAX; | ||
77 | IDECONFIG1 = (1<<28)|(1<<20)|(1<<18)|(1<<13)|(3<<10); | ||
78 | /* BUFEN2 enable on /CS2 | CS2Post 1 clock| CS2Pre 3 clocks*/ | ||
79 | IDECONFIG2 = (1<<18)|(1<<16)|(1<<8)|(1<<0); /* TA /CS2 enable + CS2wait */ | ||
80 | |||
81 | and_l(~(0x07<<16), &ADCONFIG); | ||
82 | or_l(((1<<7)|(1<<2)|(1<<0))<<16, &ADCONFIG); /* adclk = busclk/32 */ | ||
83 | |||
84 | break; | ||
85 | |||
86 | case CPUFREQ_NORMAL: | ||
87 | DCR = (DCR & ~0x01ff) | DEFAULT_REFRESH_TIMER; | ||
88 | /* Refresh timer for bypass frequency */ | ||
89 | PLLCR &= ~1; /* Bypass mode */ | ||
90 | timers_adjust_prescale(CPUFREQ_DEFAULT_MULT, false); | ||
91 | PLLCR = 0x05028045 | (PLLCR & 0x70C00000); | ||
92 | CSCR0 = 0x00000580; /* Flash: 1 wait state */ | ||
93 | CSCR3 = 0x00000980; /* LCD: 0 wait states */ | ||
94 | while(!(PLLCR & 0x80000000)) {}; /* Wait until the PLL has locked. | ||
95 | This may take up to 10ms! */ | ||
96 | timers_adjust_prescale(CPUFREQ_NORMAL_MULT, true); | ||
97 | DCR = (0x8000 | NORMAL_REFRESH_TIMER); /* Refresh timer */ | ||
98 | cpu_frequency = CPUFREQ_NORMAL; | ||
99 | IDECONFIG1 = (1<<28)|(1<<20)|(1<<18)|(1<<13)|(1<<10); | ||
100 | IDECONFIG2 = (1<<18)|(1<<16); | ||
101 | |||
102 | and_l(~(0x07<<16), &ADCONFIG); | ||
103 | or_l(((1<<7)|(1<<1)|(1<<0))<<16, &ADCONFIG); /* adclk = busclk/8 */ | ||
104 | |||
105 | break; | ||
106 | default: | ||
107 | DCR = (DCR & ~0x01ff) | DEFAULT_REFRESH_TIMER; | ||
108 | /* Refresh timer for bypass frequency */ | ||
109 | PLLCR &= ~1; /* Bypass mode */ | ||
110 | timers_adjust_prescale(CPUFREQ_DEFAULT_MULT, true); | ||
111 | /* Power down PLL, but keep CLSEL and CRSEL */ | ||
112 | PLLCR = 0x00000200 | (PLLCR & 0x70C00000); | ||
113 | CSCR0 = 0x00000180; /* Flash: 0 wait states */ | ||
114 | CSCR3 = 0x00000980; /* LCD: 0 wait states */ | ||
115 | DCR = (0x8000 | DEFAULT_REFRESH_TIMER); /* Refresh timer */ | ||
116 | cpu_frequency = CPUFREQ_DEFAULT; | ||
117 | IDECONFIG1 = (1<<28)|(1<<20)|(1<<18)|(1<<13)|(1<<10); | ||
118 | IDECONFIG2 = (1<<18)|(1<<16); | ||
119 | |||
120 | and_l(~(0x07<<16), &ADCONFIG); | ||
121 | or_l(((1<<7)|(1<<0))<<16, &ADCONFIG); /* adclk = busclk/2 */ | ||
122 | |||
123 | break; | ||
124 | } | ||
125 | } | ||