projects/linux·blob master · refs

265 lines · 5.5 KiB

1/*
2 * Setup pointers to hardware-dependent routines.
3 *
4 * This file is subject to the terms and conditions of the GNU General Public
5 * License. See the file "COPYING" in the main directory of this archive
6 * for more details.
7 *
8 * Copyright (C) 1996, 97, 98, 2000, 03, 04, 06 Ralf Baechle ([email protected])
9 * Copyright (C) 2006,2007 Thomas Bogendoerfer ([email protected])
10 */
11#include <linux/eisa.h>
12#include <linux/init.h>
13#include <linux/export.h>
14#include <linux/console.h>
15#include <linux/screen_info.h>
16#include <linux/string.h>
17
18#ifdef CONFIG_FW_ARC
19#include <asm/fw/arc/types.h>
20#include <asm/sgialib.h>
21#endif
22
23#ifdef CONFIG_FW_SNIPROM
24#include <asm/mipsprom.h>
25#endif
26
27#include <asm/bootinfo.h>
28#include <asm/cpu.h>
29#include <asm/io.h>
30#include <asm/reboot.h>
31#include <asm/sni.h>
32
33unsigned int sni_brd_type;
34EXPORT_SYMBOL(sni_brd_type);
35
36extern void sni_machine_restart(char *command);
37extern void sni_machine_power_off(void);
38
39static void __init sni_display_setup(void)
40{
41#if defined(CONFIG_VGA_CONSOLE) && defined(CONFIG_FW_ARC)
42 static struct screen_info si;
43 DISPLAY_STATUS *di;
44
45 di = ArcGetDisplayStatus(1);
46
47 if (di) {
48 si.orig_x = di->CursorXPosition;
49 si.orig_y = di->CursorYPosition;
50 si.orig_video_cols = di->CursorMaxXPosition;
51 si.orig_video_lines = di->CursorMaxYPosition;
52 si.orig_video_isVGA = VIDEO_TYPE_VGAC;
53 si.orig_video_points = 16;
54
55 vgacon_register_screen(&si);
56 }
57#endif
58}
59
60static void __init sni_console_setup(void)
61{
62#ifndef CONFIG_FW_ARC
63 char *ctype;
64 char *cdev;
65 char *baud;
66 int port;
67 static char options[8] __initdata;
68
69 cdev = prom_getenv("console_dev");
70 if (strncmp(cdev, "tty", 3) == 0) {
71 ctype = prom_getenv("console");
72 switch (*ctype) {
73 default:
74 case 'l':
75 port = 0;
76 baud = prom_getenv("lbaud");
77 break;
78 case 'r':
79 port = 1;
80 baud = prom_getenv("rbaud");
81 break;
82 }
83 if (baud)
84 strscpy(options, baud);
85 if (strncmp(cdev, "tty552", 6) == 0)
86 add_preferred_console("ttyS", port,
87 baud ? options : NULL);
88 else
89 add_preferred_console("ttySC", port,
90 baud ? options : NULL);
91 }
92#endif
93}
94
95#ifdef DEBUG
96static void __init sni_idprom_dump(void)
97{
98 int i;
99
100 pr_debug("SNI IDProm dump:\n");
101 for (i = 0; i < 256; i++) {
102 if (i%16 == 0)
103 pr_debug("%04x ", i);
104
105 printk("%02x ", *(unsigned char *) (SNI_IDPROM_BASE + i));
106
107 if (i % 16 == 15)
108 printk("\n");
109 }
110}
111#endif
112
113void __init plat_mem_setup(void)
114{
115 int cputype;
116
117 set_io_port_base(SNI_PORT_BASE);
118// ioport_resource.end = sni_io_resource.end;
119
120 /*
121 * Setup (E)ISA I/O memory access stuff
122 */
123#ifdef CONFIG_EISA
124 EISA_bus = 1;
125#endif
126
127 sni_brd_type = *(unsigned char *)SNI_IDPROM_BRDTYPE;
128 cputype = *(unsigned char *)SNI_IDPROM_CPUTYPE;
129 switch (sni_brd_type) {
130 case SNI_BRD_TOWER_OASIC:
131 switch (cputype) {
132 case SNI_CPU_M8030:
133 system_type = "RM400-330";
134 break;
135 case SNI_CPU_M8031:
136 system_type = "RM400-430";
137 break;
138 case SNI_CPU_M8037:
139 system_type = "RM400-530";
140 break;
141 case SNI_CPU_M8034:
142 system_type = "RM400-730";
143 break;
144 default:
145 system_type = "RM400-xxx";
146 break;
147 }
148 break;
149 case SNI_BRD_MINITOWER:
150 switch (cputype) {
151 case SNI_CPU_M8021:
152 case SNI_CPU_M8043:
153 system_type = "RM400-120";
154 break;
155 case SNI_CPU_M8040:
156 system_type = "RM400-220";
157 break;
158 case SNI_CPU_M8053:
159 system_type = "RM400-225";
160 break;
161 case SNI_CPU_M8050:
162 system_type = "RM400-420";
163 break;
164 default:
165 system_type = "RM400-xxx";
166 break;
167 }
168 break;
169 case SNI_BRD_PCI_TOWER:
170 system_type = "RM400-Cxx";
171 break;
172 case SNI_BRD_RM200:
173 system_type = "RM200-xxx";
174 break;
175 case SNI_BRD_PCI_MTOWER:
176 system_type = "RM300-Cxx";
177 break;
178 case SNI_BRD_PCI_DESKTOP:
179 switch (read_c0_prid() & PRID_IMP_MASK) {
180 case PRID_IMP_R4600:
181 case PRID_IMP_R4700:
182 system_type = "RM200-C20";
183 break;
184 case PRID_IMP_R5000:
185 system_type = "RM200-C40";
186 break;
187 default:
188 system_type = "RM200-Cxx";
189 break;
190 }
191 break;
192 case SNI_BRD_PCI_TOWER_CPLUS:
193 system_type = "RM400-Exx";
194 break;
195 case SNI_BRD_PCI_MTOWER_CPLUS:
196 system_type = "RM300-Exx";
197 break;
198 }
199 pr_debug("Found SNI brdtype %02x name %s\n", sni_brd_type, system_type);
200
201#ifdef DEBUG
202 sni_idprom_dump();
203#endif
204
205 switch (sni_brd_type) {
206 case SNI_BRD_10:
207 case SNI_BRD_10NEW:
208 case SNI_BRD_TOWER_OASIC:
209 case SNI_BRD_MINITOWER:
210 sni_a20r_init();
211 break;
212
213 case SNI_BRD_PCI_TOWER:
214 case SNI_BRD_PCI_TOWER_CPLUS:
215 sni_pcit_init();
216 break;
217
218 case SNI_BRD_RM200:
219 sni_rm200_init();
220 break;
221
222 case SNI_BRD_PCI_MTOWER:
223 case SNI_BRD_PCI_DESKTOP:
224 case SNI_BRD_PCI_MTOWER_CPLUS:
225 sni_pcimt_init();
226 break;
227 }
228
229 _machine_restart = sni_machine_restart;
230 pm_power_off = sni_machine_power_off;
231
232 sni_display_setup();
233 sni_console_setup();
234}
235
236#ifdef CONFIG_PCI
237
238#include <linux/pci.h>
239#include <video/vga.h>
240#include <video/cirrus.h>
241
242static void quirk_cirrus_ram_size(struct pci_dev *dev)
243{
244 u16 cmd;
245
246 /*
247 * firmware doesn't set the ram size correct, so we
248 * need to do it here, otherwise we get screen corruption
249 * on older Cirrus chips
250 */
251 pci_read_config_word(dev, PCI_COMMAND, &cmd);
252 if ((cmd & (PCI_COMMAND_IO|PCI_COMMAND_MEMORY))
253 == (PCI_COMMAND_IO|PCI_COMMAND_MEMORY)) {
254 vga_wseq(NULL, CL_SEQR6, 0x12); /* unlock all extension registers */
255 vga_wseq(NULL, CL_SEQRF, 0x18);
256 }
257}
258
259DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_5434_8,
260 quirk_cirrus_ram_size);
261DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_5436,
262 quirk_cirrus_ram_size);
263DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_5446,
264 quirk_cirrus_ram_size);
265#endif