]>
Commit | Line | Data |
---|---|---|
32fe2871 WD |
1 | /* |
2 | * (C) Copyright 2002 | |
3 | * Sysgo Real-Time Solutions, GmbH <www.elinos.com> | |
4 | * Marius Groeger <mgroeger@sysgo.de> | |
5 | * | |
6 | * (C) Copyright 2002 | |
7 | * Sysgo Real-Time Solutions, GmbH <www.elinos.com> | |
8 | * Alex Zuepke <azu@sysgo.de> | |
9 | * | |
10 | * See file CREDITS for list of people who contributed to this | |
11 | * project. | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or | |
14 | * modify it under the terms of the GNU General Public License as | |
15 | * published by the Free Software Foundation; either version 2 of | |
16 | * the License, or (at your option) any later version. | |
17 | * | |
18 | * This program is distributed in the hope that it will be useful, | |
19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | * GNU General Public License for more details. | |
22 | * | |
23 | * You should have received a copy of the GNU General Public License | |
24 | * along with this program; if not, write to the Free Software | |
25 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
26 | * MA 02111-1307 USA | |
27 | */ | |
28 | ||
29 | #include <common.h> | |
30 | #include <asm/arch/pxa-regs.h> | |
31 | ||
32 | extern void reset_cpu (ulong addr); | |
33 | ||
34 | #ifdef CONFIG_USE_IRQ | |
35 | /* enable IRQ/FIQ interrupts */ | |
36 | void enable_interrupts (void) | |
37 | { | |
38 | #error: interrupts not implemented yet | |
39 | } | |
40 | ||
41 | ||
42 | /* | |
43 | * disable IRQ/FIQ interrupts | |
44 | * returns true if interrupts had been enabled before we disabled them | |
45 | */ | |
46 | int disable_interrupts (void) | |
47 | { | |
48 | #error: interrupts not implemented yet | |
49 | } | |
50 | #else | |
51 | void enable_interrupts (void) | |
52 | { | |
53 | return; | |
54 | } | |
55 | int disable_interrupts (void) | |
56 | { | |
57 | return 0; | |
58 | } | |
59 | #endif | |
60 | ||
61 | ||
32fe2871 WD |
62 | void bad_mode (void) |
63 | { | |
64 | panic ("Resetting CPU ...\n"); | |
65 | reset_cpu (0); | |
66 | } | |
67 | ||
68 | void show_regs (struct pt_regs *regs) | |
69 | { | |
70 | unsigned long flags; | |
71 | const char *processor_modes[] = { | |
72 | "USER_26", "FIQ_26", "IRQ_26", "SVC_26", | |
73 | "UK4_26", "UK5_26", "UK6_26", "UK7_26", | |
74 | "UK8_26", "UK9_26", "UK10_26", "UK11_26", | |
75 | "UK12_26", "UK13_26", "UK14_26", "UK15_26", | |
76 | "USER_32", "FIQ_32", "IRQ_32", "SVC_32", | |
77 | "UK4_32", "UK5_32", "UK6_32", "ABT_32", | |
78 | "UK8_32", "UK9_32", "UK10_32", "UND_32", | |
79 | "UK12_32", "UK13_32", "UK14_32", "SYS_32" | |
80 | }; | |
81 | ||
82 | flags = condition_codes (regs); | |
83 | ||
84 | printf ("pc : [<%08lx>] lr : [<%08lx>]\n" | |
85 | "sp : %08lx ip : %08lx fp : %08lx\n", | |
86 | instruction_pointer (regs), | |
87 | regs->ARM_lr, regs->ARM_sp, regs->ARM_ip, regs->ARM_fp); | |
88 | printf ("r10: %08lx r9 : %08lx r8 : %08lx\n", | |
89 | regs->ARM_r10, regs->ARM_r9, regs->ARM_r8); | |
90 | printf ("r7 : %08lx r6 : %08lx r5 : %08lx r4 : %08lx\n", | |
91 | regs->ARM_r7, regs->ARM_r6, regs->ARM_r5, regs->ARM_r4); | |
92 | printf ("r3 : %08lx r2 : %08lx r1 : %08lx r0 : %08lx\n", | |
93 | regs->ARM_r3, regs->ARM_r2, regs->ARM_r1, regs->ARM_r0); | |
94 | printf ("Flags: %c%c%c%c", | |
95 | flags & CC_N_BIT ? 'N' : 'n', | |
96 | flags & CC_Z_BIT ? 'Z' : 'z', | |
97 | flags & CC_C_BIT ? 'C' : 'c', flags & CC_V_BIT ? 'V' : 'v'); | |
98 | printf (" IRQs %s FIQs %s Mode %s%s\n", | |
99 | interrupts_enabled (regs) ? "on" : "off", | |
100 | fast_interrupts_enabled (regs) ? "on" : "off", | |
101 | processor_modes[processor_mode (regs)], | |
102 | thumb_mode (regs) ? " (T)" : ""); | |
103 | } | |
104 | ||
105 | void do_undefined_instruction (struct pt_regs *pt_regs) | |
106 | { | |
107 | printf ("undefined instruction\n"); | |
108 | show_regs (pt_regs); | |
109 | bad_mode (); | |
110 | } | |
111 | ||
112 | void do_software_interrupt (struct pt_regs *pt_regs) | |
113 | { | |
114 | printf ("software interrupt\n"); | |
115 | show_regs (pt_regs); | |
116 | bad_mode (); | |
117 | } | |
118 | ||
119 | void do_prefetch_abort (struct pt_regs *pt_regs) | |
120 | { | |
121 | printf ("prefetch abort\n"); | |
122 | show_regs (pt_regs); | |
123 | bad_mode (); | |
124 | } | |
125 | ||
126 | void do_data_abort (struct pt_regs *pt_regs) | |
127 | { | |
128 | printf ("data abort\n"); | |
129 | show_regs (pt_regs); | |
130 | bad_mode (); | |
131 | } | |
132 | ||
133 | void do_not_used (struct pt_regs *pt_regs) | |
134 | { | |
135 | printf ("not used\n"); | |
136 | show_regs (pt_regs); | |
137 | bad_mode (); | |
138 | } | |
139 | ||
140 | void do_fiq (struct pt_regs *pt_regs) | |
141 | { | |
142 | printf ("fast interrupt request\n"); | |
143 | show_regs (pt_regs); | |
144 | bad_mode (); | |
145 | } | |
146 | ||
147 | void do_irq (struct pt_regs *pt_regs) | |
148 | { | |
149 | printf ("interrupt request\n"); | |
150 | show_regs (pt_regs); | |
151 | bad_mode (); | |
152 | } | |
153 | ||
154 | ||
155 | int interrupt_init (void) | |
156 | { | |
157 | /* nothing happens here - we don't setup any IRQs */ | |
158 | return (0); | |
159 | } | |
160 | ||
161 | void reset_timer (void) | |
162 | { | |
163 | reset_timer_masked (); | |
164 | } | |
165 | ||
166 | ulong get_timer (ulong base) | |
167 | { | |
168 | return get_timer_masked (); | |
169 | } | |
170 | ||
171 | void set_timer (ulong t) | |
172 | { | |
173 | /* nop */ | |
174 | } | |
175 | ||
176 | void udelay (unsigned long usec) | |
177 | { | |
178 | udelay_masked (usec); | |
179 | } | |
180 | ||
181 | ||
182 | void reset_timer_masked (void) | |
183 | { | |
184 | OSCR = 0; | |
185 | } | |
186 | ||
187 | ulong get_timer_masked (void) | |
188 | { | |
189 | return OSCR; | |
190 | } | |
191 | ||
192 | void udelay_masked (unsigned long usec) | |
193 | { | |
194 | ulong tmo; | |
195 | ||
196 | tmo = usec / 1000; | |
197 | tmo *= CFG_HZ; | |
198 | tmo /= 1000; | |
199 | ||
200 | reset_timer_masked (); | |
201 | ||
202 | while (tmo >= get_timer_masked ()) | |
203 | /*NOP*/; | |
204 | } |