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