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ec0852cf WD |
1 | /* |
2 | * (C) Copyright 2001 | |
3 | * Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc. | |
4 | * | |
5 | * See file CREDITS for list of people who contributed to this | |
6 | * project. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU General Public License as | |
10 | * published by the Free Software Foundation; either version 2 of | |
11 | * the License, or (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
21 | * MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | /* | |
25 | * interrupts.c - just enough support for the decrementer/timer | |
26 | */ | |
27 | ||
28 | #include <common.h> | |
29 | #include <mpc8xx.h> | |
30 | #include <mpc8xx_irq.h> | |
31 | #include <asm/processor.h> | |
32 | #include <commproc.h> | |
33 | #include <command.h> | |
34 | ||
a8c7c708 | 35 | int interrupt_init_cpu (unsigned *decrementer_count) |
ec0852cf | 36 | { |
c7de829c | 37 | #if defined(DEBUG) && !defined(CONFIG_AMIGAONEG3SE) |
ec0852cf WD |
38 | printf("interrupt_init: GT main cause reg: %08x:%08x\n", |
39 | GTREGREAD(LOW_INTERRUPT_CAUSE_REGISTER), | |
40 | GTREGREAD(HIGH_INTERRUPT_CAUSE_REGISTER)); | |
41 | printf("interrupt_init: ethernet cause regs: %08x %08x %08x\n", | |
42 | GTREGREAD(ETHERNET0_INTERRUPT_CAUSE_REGISTER), | |
43 | GTREGREAD(ETHERNET1_INTERRUPT_CAUSE_REGISTER), | |
44 | GTREGREAD(ETHERNET2_INTERRUPT_CAUSE_REGISTER)); | |
45 | printf("interrupt_init: ethernet mask regs: %08x %08x %08x\n", | |
46 | GTREGREAD(ETHERNET0_INTERRUPT_MASK_REGISTER), | |
47 | GTREGREAD(ETHERNET1_INTERRUPT_MASK_REGISTER), | |
48 | GTREGREAD(ETHERNET2_INTERRUPT_MASK_REGISTER)); | |
49 | puts("interrupt_init: setting decrementer_count\n"); | |
50 | #endif | |
6d0f6bcf | 51 | *decrementer_count = get_tbclk() / CONFIG_SYS_HZ; |
ec0852cf | 52 | |
ec0852cf WD |
53 | return (0); |
54 | } | |
55 | ||
56 | /****************************************************************************/ | |
57 | ||
58 | /* | |
59 | * Handle external interrupts | |
60 | */ | |
61 | void | |
62 | external_interrupt(struct pt_regs *regs) | |
63 | { | |
64 | puts("external_interrupt (oops!)\n"); | |
65 | } | |
66 | ||
67 | volatile ulong timestamp = 0; | |
68 | ||
69 | /* | |
70 | * timer_interrupt - gets called when the decrementer overflows, | |
71 | * with interrupts disabled. | |
72 | * Trivial implementation - no need to be really accurate. | |
73 | */ | |
74 | void | |
a8c7c708 | 75 | timer_interrupt_cpu (struct pt_regs *regs) |
ec0852cf | 76 | { |
a8c7c708 WD |
77 | /* nothing to do here */ |
78 | return; | |
ec0852cf WD |
79 | } |
80 | ||
81 | /****************************************************************************/ | |
82 | ||
83 | /* | |
84 | * Install and free a interrupt handler. | |
85 | */ | |
86 | ||
87 | void | |
88 | irq_install_handler(int vec, interrupt_handler_t *handler, void *arg) | |
89 | { | |
90 | ||
91 | } | |
92 | ||
93 | void | |
94 | irq_free_handler(int vec) | |
95 | { | |
96 | ||
97 | } | |
98 | ||
99 | /****************************************************************************/ | |
100 | ||
101 | void | |
102 | do_irqinfo(cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[]) | |
103 | { | |
104 | puts("IRQ related functions are unimplemented currently.\n"); | |
105 | } |