GNU Linux-libre 4.19.286-gnu1
[releases.git] / arch / mips / sni / setup.c
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 (ralf@linux-mips.org)
9  * Copyright (C) 2006,2007 Thomas Bogendoerfer (tsbogend@alpha.franken.de)
10  */
11 #include <linux/eisa.h>
12 #include <linux/init.h>
13 #include <linux/export.h>
14 #include <linux/console.h>
15 #include <linux/fb.h>
16 #include <linux/screen_info.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
33 unsigned int sni_brd_type;
34 EXPORT_SYMBOL(sni_brd_type);
35
36 extern void sni_machine_restart(char *command);
37 extern void sni_machine_power_off(void);
38
39 static void __init sni_display_setup(void)
40 {
41 #if defined(CONFIG_VT) && defined(CONFIG_VGA_CONSOLE) && defined(CONFIG_FW_ARC)
42         struct screen_info *si = &screen_info;
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 #endif
56 }
57
58 static void __init sni_console_setup(void)
59 {
60 #ifndef CONFIG_FW_ARC
61         char *ctype;
62         char *cdev;
63         char *baud;
64         int port;
65         static char options[8] __initdata;
66
67         cdev = prom_getenv("console_dev");
68         if (strncmp(cdev, "tty", 3) == 0) {
69                 ctype = prom_getenv("console");
70                 switch (*ctype) {
71                 default:
72                 case 'l':
73                         port = 0;
74                         baud = prom_getenv("lbaud");
75                         break;
76                 case 'r':
77                         port = 1;
78                         baud = prom_getenv("rbaud");
79                         break;
80                 }
81                 if (baud)
82                         strcpy(options, baud);
83                 if (strncmp(cdev, "tty552", 6) == 0)
84                         add_preferred_console("ttyS", port,
85                                               baud ? options : NULL);
86                 else
87                         add_preferred_console("ttySC", port,
88                                               baud ? options : NULL);
89         }
90 #endif
91 }
92
93 #ifdef DEBUG
94 static void __init sni_idprom_dump(void)
95 {
96         int     i;
97
98         pr_debug("SNI IDProm dump:\n");
99         for (i = 0; i < 256; i++) {
100                 if (i%16 == 0)
101                         pr_debug("%04x ", i);
102
103                 printk("%02x ", *(unsigned char *) (SNI_IDPROM_BASE + i));
104
105                 if (i % 16 == 15)
106                         printk("\n");
107         }
108 }
109 #endif
110
111 void __init plat_mem_setup(void)
112 {
113         int cputype;
114
115         set_io_port_base(SNI_PORT_BASE);
116 //      ioport_resource.end = sni_io_resource.end;
117
118         /*
119          * Setup (E)ISA I/O memory access stuff
120          */
121 #ifdef CONFIG_EISA
122         EISA_bus = 1;
123 #endif
124
125         sni_brd_type = *(unsigned char *)SNI_IDPROM_BRDTYPE;
126         cputype = *(unsigned char *)SNI_IDPROM_CPUTYPE;
127         switch (sni_brd_type) {
128         case SNI_BRD_TOWER_OASIC:
129                 switch (cputype) {
130                 case SNI_CPU_M8030:
131                         system_type = "RM400-330";
132                         break;
133                 case SNI_CPU_M8031:
134                         system_type = "RM400-430";
135                         break;
136                 case SNI_CPU_M8037:
137                         system_type = "RM400-530";
138                         break;
139                 case SNI_CPU_M8034:
140                         system_type = "RM400-730";
141                         break;
142                 default:
143                         system_type = "RM400-xxx";
144                         break;
145                 }
146                 break;
147         case SNI_BRD_MINITOWER:
148                 switch (cputype) {
149                 case SNI_CPU_M8021:
150                 case SNI_CPU_M8043:
151                         system_type = "RM400-120";
152                         break;
153                 case SNI_CPU_M8040:
154                         system_type = "RM400-220";
155                         break;
156                 case SNI_CPU_M8053:
157                         system_type = "RM400-225";
158                         break;
159                 case SNI_CPU_M8050:
160                         system_type = "RM400-420";
161                         break;
162                 default:
163                         system_type = "RM400-xxx";
164                         break;
165                 }
166                 break;
167         case SNI_BRD_PCI_TOWER:
168                 system_type = "RM400-Cxx";
169                 break;
170         case SNI_BRD_RM200:
171                 system_type = "RM200-xxx";
172                 break;
173         case SNI_BRD_PCI_MTOWER:
174                 system_type = "RM300-Cxx";
175                 break;
176         case SNI_BRD_PCI_DESKTOP:
177                 switch (read_c0_prid() & PRID_IMP_MASK) {
178                 case PRID_IMP_R4600:
179                 case PRID_IMP_R4700:
180                         system_type = "RM200-C20";
181                         break;
182                 case PRID_IMP_R5000:
183                         system_type = "RM200-C40";
184                         break;
185                 default:
186                         system_type = "RM200-Cxx";
187                         break;
188                 }
189                 break;
190         case SNI_BRD_PCI_TOWER_CPLUS:
191                 system_type = "RM400-Exx";
192                 break;
193         case SNI_BRD_PCI_MTOWER_CPLUS:
194                 system_type = "RM300-Exx";
195                 break;
196         }
197         pr_debug("Found SNI brdtype %02x name %s\n", sni_brd_type, system_type);
198
199 #ifdef DEBUG
200         sni_idprom_dump();
201 #endif
202
203         switch (sni_brd_type) {
204         case SNI_BRD_10:
205         case SNI_BRD_10NEW:
206         case SNI_BRD_TOWER_OASIC:
207         case SNI_BRD_MINITOWER:
208                 sni_a20r_init();
209                 break;
210
211         case SNI_BRD_PCI_TOWER:
212         case SNI_BRD_PCI_TOWER_CPLUS:
213                 sni_pcit_init();
214                 break;
215
216         case SNI_BRD_RM200:
217                 sni_rm200_init();
218                 break;
219
220         case SNI_BRD_PCI_MTOWER:
221         case SNI_BRD_PCI_DESKTOP:
222         case SNI_BRD_PCI_MTOWER_CPLUS:
223                 sni_pcimt_init();
224                 break;
225         }
226
227         _machine_restart = sni_machine_restart;
228         pm_power_off = sni_machine_power_off;
229
230         sni_display_setup();
231         sni_console_setup();
232 }
233
234 #ifdef CONFIG_PCI
235
236 #include <linux/pci.h>
237 #include <video/vga.h>
238 #include <video/cirrus.h>
239
240 static void quirk_cirrus_ram_size(struct pci_dev *dev)
241 {
242         u16 cmd;
243
244         /*
245          * firmware doesn't set the ram size correct, so we
246          * need to do it here, otherwise we get screen corruption
247          * on older Cirrus chips
248          */
249         pci_read_config_word(dev, PCI_COMMAND, &cmd);
250         if ((cmd & (PCI_COMMAND_IO|PCI_COMMAND_MEMORY))
251                 == (PCI_COMMAND_IO|PCI_COMMAND_MEMORY)) {
252                 vga_wseq(NULL, CL_SEQR6, 0x12); /* unlock all extension registers */
253                 vga_wseq(NULL, CL_SEQRF, 0x18);
254         }
255 }
256
257 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_5434_8,
258                         quirk_cirrus_ram_size);
259 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_5436,
260                         quirk_cirrus_ram_size);
261 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_5446,
262                         quirk_cirrus_ram_size);
263 #endif