source: rtems/bsps/powerpc/motorola_powerpc/include/bsp.h @ caccc5b

5
Last change on this file since caccc5b was caccc5b, checked in by Sebastian Huber <sebastian.huber@…>, on 07/24/18 at 09:35:09

bsps: Fix function declaration warnings
  • Property mode set to 100644
File size: 8.3 KB
Line 
1/*
2 *
3 *  The license and distribution terms for this file may be
4 *  found in the file LICENSE in this distribution or at
5 *  http://www.rtems.org/license/LICENSE.
6 */
7#ifndef LIBBSP_POWERPC_MOTOROLA_POWERPC_BSP_H
8#define LIBBSP_POWERPC_MOTOROLA_POWERPC_BSP_H
9
10#include <bspopts.h>
11#include <bsp/default-initial-extension.h>
12
13#include <rtems.h>
14#include <libcpu/io.h>
15#include <bsp/vectors.h>
16 
17#ifdef qemu
18#include <rtems/bspcmdline.h>
19#endif
20 
21#ifdef __cplusplus
22extern "C" {
23#endif
24
25/*
26 * diagram illustrating the role of the configuration
27 * constants
28 *  PCI_MEM_WIN0:        CPU starting addr where PCI memory space is visible
29 *  PCI_MEM_BASE:        CPU address of PCI mem addr. zero. (regardless of this
30 *                       address being 'visible' or not!).
31 * _VME_A32_WIN0_ON_PCI: PCI starting addr of the 1st window to VME
32 * _VME_A32_WIN0_ON_VME: VME address of that same window
33 *
34 * AFAIK, only PreP boards have a non-zero PCI_MEM_BASE (i.e., an offset between
35 * CPU and PCI addresses). The mvme2300 'ppcbug' firmware configures the PCI
36 * bus using PCI base addresses! I.e., drivers need to add PCI_MEM_BASE to
37 * the base address read from PCI config.space in order to translate that
38 * into a CPU address.
39 *
40 * NOTE: VME addresses should NEVER be translated using these constants!
41 *       they are strictly for BSP internal use. Drivers etc. should use
42 *       the translation routines int VME.h (BSP_vme2local_adrs/BSP_local2vme_adrs).
43 *
44 *           CPU ADDR                  PCI_ADDR                                VME ADDR
45 *
46 *           00000000                  XXXXXXXX                                XXXXXXXX
47 *    ^  ^   ........
48 *    |  |
49 *    |  |  e.g., RAM                  XXXXXXXX
50 *    |  |                                                                     00000000
51 *    |  |  .........                                                          ^
52 *    |  |            (possible offset                                         |
53 *    |  |             between pci and XXXXXXXX                                | ......
54 *    |  |             cpu addresses)                                          |
55 *    |  v                                                                     |
56 *    |  PCI_MEM_BASE  ------------->  00000000 ---------------                |
57 *    |     ........                   ........               ^                |
58 *    |                                invisible              |                |
59 *    |     ........                   from CPU               |                |
60 *    v                                                       |                |
61 *       PCI_MEM_WIN0 =============  first visible PCI addr   |                |
62 *                                                            |                |
63 *        pci devices   pci window                            |                |
64 *       visible here                                         v                v
65 *                      mapped by   ========== _VME_A32_WIN0_ON_PCI =======  _VME_A32_WIN0_ON_VME
66 *                                                 vme window
67 *        VME devices   hostbridge                 mapped by
68 *       visible here                              universe
69 *                    =====================================================
70 *
71 */
72
73/* fundamental addresses for BSP (CHRPxxx and PREPxxx are from libcpu/io.h) */
74#if defined(mvme2100)
75#define _IO_BASE                CHRP_ISA_IO_BASE
76#define _ISA_MEM_BASE           CHRP_ISA_MEM_BASE
77/* address of our ram on the PCI bus   */
78#define PCI_DRAM_OFFSET         CHRP_PCI_DRAM_OFFSET
79/* offset of pci memory as seen from the CPU */
80#define PCI_MEM_BASE            0
81/* where (in CPU addr. space) does the PCI window start */
82#define PCI_MEM_WIN0            0x80000000
83
84#else
85#define _IO_BASE                PREP_ISA_IO_BASE
86#define _ISA_MEM_BASE           PREP_ISA_MEM_BASE
87#ifndef qemu
88/* address of our ram on the PCI bus   */
89#define PCI_DRAM_OFFSET         PREP_PCI_DRAM_OFFSET
90/* offset of pci memory as seen from the CPU */
91#define PCI_MEM_BASE            PREP_ISA_MEM_BASE
92#define PCI_MEM_WIN0            0
93#else
94#define PCI_DRAM_OFFSET         0
95#define PCI_MEM_BASE            0
96#define PCI_MEM_WIN0            PREP_ISA_MEM_BASE
97#endif
98#endif
99
100
101/*
102 *  Base address definitions for several devices
103 *
104 *  MVME2100 is very similar but has fewer devices and uses on-CPU EPIC
105 *  implementation of OpenPIC controller.  It also cannot be probed to
106 *  find out what it is which is VERY different from other Motorola boards.
107 */
108
109#if defined(mvme2100)
110#define BSP_UART_IOBASE_COM1 ((_IO_BASE)+0x01e10000)
111/* #define BSP_UART_IOBASE_COM1     (0xffe10000) */
112#define BSP_OPEN_PIC_BASE_OFFSET 0x40000
113
114#define MVME_HAS_DEC21140
115#else
116#define BSP_UART_IOBASE_COM1 ((_IO_BASE)+0x3f8)
117#define BSP_UART_IOBASE_COM2 ((_IO_BASE)+0x2f8)
118
119#if ! defined(qemu)
120#define BSP_KBD_IOBASE       ((_IO_BASE)+0x60)
121#define BSP_VGA_IOBASE       ((_IO_BASE)+0x3c0)
122#endif
123
124#if defined(mvme2300)
125#define MVME_HAS_DEC21140
126#endif
127#endif
128
129#define BSP_CONSOLE_PORT        BSP_UART_COM1
130#define BSP_UART_BAUD_BASE      115200
131
132struct rtems_bsdnet_ifconfig;
133
134#if defined(MVME_HAS_DEC21140)
135#define RTEMS_BSP_NETWORK_DRIVER_NAME "dc1"
136#define RTEMS_BSP_NETWORK_DRIVER_ATTACH rtems_dec21140_driver_attach
137extern int rtems_dec21140_driver_attach(struct rtems_bsdnet_ifconfig *, int);
138#endif
139
140#ifdef qemu
141#define RTEMS_BSP_NETWORK_DRIVER_NAME "ne1"
142#define RTEMS_BSP_NETWORK_DRIVER_ATTACH rtems_ne_driver_attach
143extern int rtems_ne_driver_attach(struct rtems_bsdnet_ifconfig *, int);
144
145RTEMS_INLINE_ROUTINE const char* bsp_cmdline_arg(const char* arg)
146{
147  return rtems_bsp_cmdline_get_param_raw(arg);
148}
149#endif
150
151#ifdef qemu
152#define BSP_IDLE_TASK_BODY bsp_ppc_idle_task_body
153extern void *bsp_ppc_idle_task_body(uintptr_t arg);
154#endif
155
156#include <bsp/openpic.h>
157/* BSP_PIC_DO_EOI is optionally used by the 'vmeUniverse' driver
158 * to implement VME IRQ priorities in software.
159 * Note that this requires support by the interrupt controller
160 * driver (cf. libbsp/shared/powerpc/irq/openpic_i8259_irq.c)
161 * and the BSP-specific universe initialization/configuration
162 * (cf. libbsp/shared/powerpc/vme/VMEConfig.h vme_universe.c)
163 *
164 * ********* IMPORTANT NOTE ********
165 * When deriving from this file (new BSPs)
166 * DO NOT define "BSP_PIC_DO_EOI" if you don't know what
167 * you are doing i.e., w/o implementing the required pieces
168 * mentioned above.
169 * ********* IMPORTANT NOTE ********
170 */
171#define BSP_PIC_DO_EOI openpic_eoi(0)
172
173#ifndef ASM
174#define outport_byte(port,value) outb(value,port)
175#define outport_word(port,value) outw(value,port)
176#define outport_long(port,value) outl(value,port)
177
178#define inport_byte(port,value) (value = inb(port))
179#define inport_word(port,value) (value = inw(port))
180#define inport_long(port,value) (value = inl(port))
181
182/*
183 * Vital Board data Start using DATA RESIDUAL
184 */
185
186/*
187 * Total memory using RESIDUAL DATA
188 */
189extern unsigned int BSP_mem_size;
190/*
191 * Start of the heap
192 */
193extern unsigned int BSP_heap_start;
194/*
195 * PCI Bus Frequency
196 */
197extern unsigned int BSP_bus_frequency;
198/*
199 * processor clock frequency
200 */
201extern unsigned int BSP_processor_frequency;
202/*
203 * Time base divisior (how many tick for 1 second).
204 */
205extern unsigned int BSP_time_base_divisor;
206
207/*
208 * String passed by the bootloader.
209 */
210extern char *BSP_commandline_string;
211
212#define BSP_Convert_decrementer( _value ) \
213  ((unsigned long long) ((((unsigned long long)BSP_time_base_divisor) * 1000000ULL) /((unsigned long long) BSP_bus_frequency)) * ((unsigned long long) (_value)))
214
215/* extern int printk(const char *, ...) __attribute__((format(printf, 1, 2))); */
216extern int BSP_disconnect_clock_handler (void);
217extern int BSP_connect_clock_handler (void);
218
219/* clear hostbridge errors
220 *
221 * NOTE: The routine returns always (-1) if 'enableMCP==1'
222 *       [semantics needed by libbspExt] if the MCP input is not wired.
223 *       It returns and clears the error bits of the PCI status register.
224 *       MCP support is disabled because:
225 *         a) the 2100 has no raven chip
226 *         b) the raven (2300) would raise machine check interrupts
227 *            on PCI config space access to empty slots.
228 */
229extern unsigned long _BSP_clear_hostbridge_errors(int enableMCP, int quiet);
230
231/*
232 * Prototypes for methods called only from .S for dependency tracking
233 */
234char *save_boot_params(
235  void *r3,
236  void *r4,
237  void *r5,
238  char *cmdline_start,
239  char *cmdline_end
240);
241void zero_bss(void);
242
243/*
244 * Prototypes for BSP methods which cross file boundaries
245 */
246void VIA_isa_bridge_interrupts_setup(void);
247
248#endif
249
250#ifdef __cplusplus
251};
252#endif
253
254#endif
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