source: rtems/c/src/lib/libbsp/i386/ts_386ex/include/bsp.h @ 341c6faa

4.104.11
Last change on this file since 341c6faa was 341c6faa, checked in by Joel Sherrill <joel.sherrill@…>, on Sep 18, 2008 at 5:26:12 PM

2008-09-18 Joel Sherrill <joel.sherrill@…>

  • include/bsp.h: Remove unnecessary boilerplate comments.
  • Property mode set to 100644
File size: 3.8 KB
Line 
1/*
2 *  This include file definitions related to an Intel i386ex board.
3 *
4 *  COPYRIGHT (c) 1989-1999.
5 *  On-Line Applications Research Corporation (OAR).
6 *
7 *  The license and distribution terms for this file may be
8 *  found in the file LICENSE in this distribution or at
9 *  http://www.rtems.com/license/LICENSE.
10 *
11 *  $Id$
12 */
13
14#ifndef _BSP_H
15#define _BSP_H
16
17#ifdef __cplusplus
18extern "C" {
19#endif
20
21#include <bspopts.h>
22
23#include <rtems.h>
24#include <rtems/iosupp.h>
25#include <rtems/console.h>
26#include <rtems/clockdrv.h>
27#include <rtems/bspIo.h>
28#include <libcpu/cpu.h>
29#include <bsp/irq.h>
30
31/*
32 * Network driver configuration
33 */
34
35struct rtems_bsdnet_ifconfig;
36extern int rtems_ne_driver_attach (struct rtems_bsdnet_ifconfig *config);
37
38extern void Wait_X_ms (unsigned);
39
40#define RTEMS_BSP_NETWORK_DRIVER_NAME         "ne1"
41#define RTEMS_BSP_NETWORK_DRIVER_ATTACH       rtems_ne_driver_attach
42
43#define NE2000_BYTE_TRANSFERS
44
45/*
46 * Constants relating to the 8254 (or 8253) programmable interval timers.
47 */
48
49#define TIMER_CONFIG   0xF834
50#define IO_TIMER1      0xF040
51
52  /* Port address of the control port and timer channels */
53
54#define TIMER_CNTR0    (IO_TIMER1 + 0) /* timer 0 counter port           */
55#define TIMER_CNTR1    (IO_TIMER1 + 1) /* timer 1 counter port           */
56#define TIMER_CNTR2    (IO_TIMER1 + 2) /* timer 2 counter port           */
57#define TIMER_MODE     (IO_TIMER1 + 3) /* timer mode port                */
58#define TIMER_SEL0     0x00            /* select counter 0               */
59#define TIMER_SEL1     0x40            /* select counter 1               */
60#define TIMER_SEL2     0x80            /* select counter 2               */
61#define TIMER_INTTC    0x00            /* mode 0, intr on terminal cnt   */
62#define TIMER_ONESHOT  0x02            /* mode 1, one shot               */
63#define TIMER_RATEGEN  0x04            /* mode 2, rate generator         */
64#define TIMER_SQWAVE   0x06            /* mode 3, square wave            */
65#define TIMER_SWSTROBE 0x08            /* mode 4, s/w triggered strobe   */
66#define TIMER_HWSTROBE 0x0a            /* mode 5, h/w triggered strobe   */
67#define TIMER_LATCH    0x00            /* latch counter for reading      */
68#define TIMER_LSB      0x10            /* r/w counter LSB                */
69#define TIMER_MSB      0x20            /* r/w counter MSB                */
70#define TIMER_16BIT    0x30            /* r/w counter 16 bits, LSB first */
71#define TIMER_BCD      0x01            /* count in BCD                   */
72
73/*
74 *  Simple spin delay in microsecond units for device drivers.
75 *  This is very dependent on the clock speed of the target.
76 */
77
78#define rtems_bsp_delay( _microseconds ) \
79  { \
80    uint32_t         _counter; \
81    \
82    _counter = (_microseconds); \
83    \
84    asm volatile ( "0: nop;" \
85                   " mov %0,%0 ;" \
86                   " loop 0b" : "=c" (_counter) \
87                              : "0"  (_counter) \
88                 ); \
89    \
90  }
91
92/* Constants */
93
94#define RAM_START 0
95
96/* replaced the earlier EI kludge of 0xfffff */
97
98#define RAM_END   0x200000
99
100/* I/O addressing */
101
102/*
103 *#define Is_tx_ready( _status ) ( (_status) & 0x20 )
104 */
105/* dec 20. try the TE instead of TBE as the check */
106
107#define Is_tx_ready( _status ) ( (_status) & 0x40 )
108
109#define Is_rx_ready( _status ) ( (_status) & 0x01 )
110
111/* Structures */
112
113#ifdef F386_INIT
114#undef BSP_EXTERN
115#define BSP_EXTERN
116#else
117#undef BSP_EXTERN
118#define BSP_EXTERN extern
119#endif
120
121#define IDT_SIZE 256
122#define GDT_SIZE 3
123
124extern interrupt_gate_descriptor Interrupt_descriptor_table[IDT_SIZE];
125extern segment_descriptors Global_descriptor_table   [GDT_SIZE];
126
127BSP_EXTERN unsigned short Idt[3];  /* Interrupt Descriptor Table Address */
128BSP_EXTERN unsigned short Gdt[3];  /* Global Descriptor Table Address */
129BSP_EXTERN unsigned int   Idt_base;
130BSP_EXTERN unsigned int   Gdt_base;
131
132/* routines */
133
134#ifdef __cplusplus
135}
136#endif
137
138#endif
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