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11
12#define DEBUG
13
14#include <linux/kernel.h>
15#include <linux/init.h>
16#include <linux/string.h>
17#include <linux/console.h>
18
19#include <asm/addrspace.h>
20#include <asm/sni.h>
21#include <asm/mipsprom.h>
22#include <asm/mipsregs.h>
23#include <asm/bootinfo.h>
24
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29
30
31
32#define PROM_GET_MEMCONF 58
33
34#define PROM_VEC (u64 *)CKSEG1ADDR(0x1fc00000)
35#define PROM_ENTRY(x) (PROM_VEC + (x))
36
37
38static int *(*__prom_putchar)(int) = (int *(*)(int))PROM_ENTRY(PROM_PUTCHAR);
39
40void prom_putchar(char c)
41{
42 __prom_putchar(c);
43}
44
45static char *(*__prom_getenv)(char *) = (char *(*)(char *))PROM_ENTRY(PROM_GETENV);
46static void (*__prom_get_memconf)(void *) = (void (*)(void *))PROM_ENTRY(PROM_GET_MEMCONF);
47
48char *prom_getenv(char *s)
49{
50 return __prom_getenv(s);
51}
52
53void __init prom_free_prom_memory(void)
54{
55}
56
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58
59
60
61static const char *systype = "Unknown";
62const char *get_system_type(void)
63{
64 return systype;
65}
66
67#define SNI_IDPROM_BASE 0xbff00000
68#define SNI_IDPROM_MEMSIZE (SNI_IDPROM_BASE+0x28)
69#define SNI_IDPROM_BRDTYPE (SNI_IDPROM_BASE+0x29)
70#define SNI_IDPROM_CPUTYPE (SNI_IDPROM_BASE+0x30)
71
72#define SNI_IDPROM_SIZE 0x1000
73
74#ifdef DEBUG
75static void __init sni_idprom_dump(void)
76{
77 int i;
78
79 pr_debug("SNI IDProm dump:\n");
80 for (i = 0; i < 256; i++) {
81 if (i%16 == 0)
82 pr_debug("%04x ", i);
83
84 printk("%02x ", *(unsigned char *) (SNI_IDPROM_BASE + i));
85
86 if (i % 16 == 15)
87 printk("\n");
88 }
89}
90#endif
91
92static void __init sni_mem_init(void )
93{
94 int i, memsize;
95 struct membank {
96 u32 size;
97 u32 base;
98 u32 size2;
99 u32 pad1;
100 u32 pad2;
101 } memconf[8];
102
103
104 memsize = *((unsigned char *) SNI_IDPROM_MEMSIZE) * 16;
105
106 pr_debug("IDProm memsize: %lu MByte\n", memsize);
107
108
109 __prom_get_memconf(&memconf);
110
111 pr_debug("prom_get_mem_conf memory configuration:\n");
112 for (i = 0;i < 8 && memconf[i].size; i++) {
113 if (sni_brd_type == SNI_BRD_PCI_TOWER ||
114 sni_brd_type == SNI_BRD_PCI_TOWER_CPLUS) {
115 if (memconf[i].base >= 0x20000000 &&
116 memconf[i].base < 0x30000000) {
117 memconf[i].base -= 0x20000000;
118 }
119 }
120 pr_debug("Bank%d: %08x @ %08x\n", i,
121 memconf[i].size, memconf[i].base);
122 add_memory_region(memconf[i].base, memconf[i].size, BOOT_MEM_RAM);
123 }
124}
125
126static void __init sni_console_setup(void)
127{
128 char *ctype;
129 char *cdev;
130 char *baud;
131 int port;
132 static char options[8];
133
134 cdev = prom_getenv("console_dev");
135 if (strncmp (cdev, "tty", 3) == 0) {
136 ctype = prom_getenv("console");
137 switch (*ctype) {
138 default:
139 case 'l':
140 port = 0;
141 baud = prom_getenv("lbaud");
142 break;
143 case 'r':
144 port = 1;
145 baud = prom_getenv("rbaud");
146 break;
147 }
148 if (baud)
149 strcpy(options, baud);
150 if (strncmp (cdev, "tty552", 6) == 0)
151 add_preferred_console("ttyS", port, baud ? options : NULL);
152 else
153 add_preferred_console("ttySC", port, baud ? options : NULL);
154 }
155}
156
157void __init prom_init(void)
158{
159 int argc = fw_arg0;
160 char **argv = (void *)fw_arg1;
161 int i;
162 int cputype;
163
164 sni_brd_type = *(unsigned char *)SNI_IDPROM_BRDTYPE;
165 cputype = *(unsigned char *)SNI_IDPROM_CPUTYPE;
166 switch (sni_brd_type) {
167 case SNI_BRD_TOWER_OASIC:
168 switch (cputype) {
169 case SNI_CPU_M8030:
170 systype = "RM400-330";
171 break;
172 case SNI_CPU_M8031:
173 systype = "RM400-430";
174 break;
175 case SNI_CPU_M8037:
176 systype = "RM400-530";
177 break;
178 case SNI_CPU_M8034:
179 systype = "RM400-730";
180 break;
181 default:
182 systype = "RM400-xxx";
183 break;
184 }
185 break;
186 case SNI_BRD_MINITOWER:
187 switch (cputype) {
188 case SNI_CPU_M8021:
189 case SNI_CPU_M8043:
190 systype = "RM400-120";
191 break;
192 case SNI_CPU_M8040:
193 systype = "RM400-220";
194 break;
195 case SNI_CPU_M8053:
196 systype = "RM400-225";
197 break;
198 case SNI_CPU_M8050:
199 systype = "RM400-420";
200 break;
201 default:
202 systype = "RM400-xxx";
203 break;
204 }
205 break;
206 case SNI_BRD_PCI_TOWER:
207 systype = "RM400-Cxx";
208 break;
209 case SNI_BRD_RM200:
210 systype = "RM200-xxx";
211 break;
212 case SNI_BRD_PCI_MTOWER:
213 systype = "RM300-Cxx";
214 break;
215 case SNI_BRD_PCI_DESKTOP:
216 switch (read_c0_prid() & 0xff00) {
217 case PRID_IMP_R4600:
218 case PRID_IMP_R4700:
219 systype = "RM200-C20";
220 break;
221 case PRID_IMP_R5000:
222 systype = "RM200-C40";
223 break;
224 default:
225 systype = "RM200-Cxx";
226 break;
227 }
228 break;
229 case SNI_BRD_PCI_TOWER_CPLUS:
230 systype = "RM400-Exx";
231 break;
232 case SNI_BRD_PCI_MTOWER_CPLUS:
233 systype = "RM300-Exx";
234 break;
235 }
236 pr_debug("Found SNI brdtype %02x name %s\n", sni_brd_type, systype);
237
238#ifdef DEBUG
239 sni_idprom_dump();
240#endif
241 sni_mem_init();
242 sni_console_setup();
243
244
245 for (i = 1; i < argc; i++) {
246 strcat(arcs_cmdline, argv[i]);
247 if (i < (argc - 1))
248 strcat(arcs_cmdline, " ");
249 }
250}
251
252
