1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
|
/*
* linux/arch/ppc/kernel/setup.c
*
* Copyright (C) 1995 Linus Torvalds
* Adapted from 'alpha' version by Gary Thomas
* Modified by Cort Dougan (cort@cs.nmt.edu)
*/
/*
* bootup setup stuff..
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/stddef.h>
#include <linux/unistd.h>
#include <linux/ptrace.h>
#include <linux/malloc.h>
#include <linux/user.h>
#include <linux/a.out.h>
#include <linux/tty.h>
#include <linux/major.h>
#include <linux/interrupt.h>
#include <linux/reboot.h>
#include <linux/init.h>
#include <linux/blk.h>
#include <linux/ioport.h>
#include <linux/console.h>
#include <linux/pci.h>
#include <asm/mmu.h>
#include <asm/processor.h>
#include <asm/io.h>
#include <asm/pgtable.h>
#include <asm/ide.h>
#include <asm/prom.h>
#include <asm/gg2.h>
#include <asm/pci-bridge.h>
extern void hydra_init(void);
extern void w83c553f_init(void);
/* for the mac fs */
kdev_t boot_dev;
extern PTE *Hash, *Hash_end;
extern unsigned long Hash_size, Hash_mask;
extern int probingmem;
extern unsigned long loops_per_sec;
unsigned long empty_zero_page[1024];
extern unsigned char aux_device_present;
#ifdef CONFIG_BLK_DEV_RAM
extern int rd_doload; /* 1 = load ramdisk, 0 = don't load */
extern int rd_prompt; /* 1 = prompt for ramdisk, 0 = don't prompt */
extern int rd_image_start; /* starting block # of image */
#endif
static const char *gg2_memtypes[4] = {
"FPM", "SDRAM", "EDO", "BEDO"
};
static const char *gg2_cachesizes[4] = {
"256 KB", "512 KB", "1 MB", "Reserved"
};
static const char *gg2_cachetypes[4] = {
"Asynchronous", "Reserved", "Flow-Through Synchronous",
"Pipelined Synchronous"
};
static const char *gg2_cachemodes[4] = {
"Disabled", "Write-Through", "Copy-Back", "Transparent Mode"
};
int
chrp_get_cpuinfo(char *buffer)
{
int i, len, sdramen;
unsigned int t;
struct device_node *root;
const char *model = "";
root = find_path_device("/");
if (root)
model = get_property(root, "model", NULL);
len = sprintf(buffer,"machine\t\t: CHRP %s\n", model);
/* VLSI VAS96011/12 `Golden Gate 2' */
/* Memory banks */
sdramen = (in_le32((unsigned *)(GG2_PCI_CONFIG_BASE+GG2_PCI_DRAM_CTRL))
>>31) & 1;
for (i = 0; i < (sdramen ? 4 : 6); i++) {
t = in_le32((unsigned *)(GG2_PCI_CONFIG_BASE+GG2_PCI_DRAM_BANK0+
i*4));
if (!(t & 1))
continue;
switch ((t>>8) & 0x1f) {
case 0x1f:
model = "4 MB";
break;
case 0x1e:
model = "8 MB";
break;
case 0x1c:
model = "16 MB";
break;
case 0x18:
model = "32 MB";
break;
case 0x10:
model = "64 MB";
break;
case 0x00:
model = "128 MB";
break;
default:
model = "Reserved";
break;
}
len += sprintf(buffer+len, "memory bank %d\t: %s %s\n", i, model,
gg2_memtypes[sdramen ? 1 : ((t>>1) & 3)]);
}
/* L2 cache */
t = in_le32((unsigned *)(GG2_PCI_CONFIG_BASE+GG2_PCI_CC_CTRL));
len += sprintf(buffer+len, "board l2\t: %s %s (%s)\n",
gg2_cachesizes[(t>>7) & 3], gg2_cachetypes[(t>>2) & 3],
gg2_cachemodes[t & 3]);
return len;
}
/*
* Fixes for the National Semiconductor PC78308VUL SuperI/O
*
* Some versions of Open Firmware incorrectly initialize the IRQ settings
* for keyboard and mouse
*/
__initfunc(static inline void sio_write(u8 val, u8 index))
{
outb(index, 0x15c);
outb(val, 0x15d);
}
__initfunc(static inline u8 sio_read(u8 index))
{
outb(index, 0x15c);
return inb(0x15d);
}
__initfunc(static void sio_fixup_irq(const char *name, u8 device, u8 level,
u8 type))
{
u8 level0, type0, active;
/* select logical device */
sio_write(device, 0x07);
active = sio_read(0x30);
level0 = sio_read(0x70);
type0 = sio_read(0x71);
printk("sio: %s irq level %d, type %d, %sactive: ", name, level0, type0,
!active ? "in" : "");
if (level0 == level && type0 == type && active)
printk("OK\n");
else {
printk("remapping to level %d, type %d, active\n", level, type);
sio_write(0x01, 0x30);
sio_write(level, 0x70);
sio_write(type, 0x71);
}
}
__initfunc(static void sio_init(void))
{
/* logical device 0 (KBC/Keyboard) */
sio_fixup_irq("keyboard", 0, 1, 2);
/* select logical device 1 (KBC/Mouse) */
sio_fixup_irq("mouse", 1, 12, 2);
}
__initfunc(void
chrp_setup_arch(unsigned long * memory_start_p, unsigned long * memory_end_p))
{
extern char cmd_line[];
/* init to some ~sane value until calibrate_delay() runs */
loops_per_sec = 50000000;
aux_device_present = 0xaa;
#ifdef CONFIG_BLK_DEV_INITRD
/* this is fine for chrp */
initrd_below_start_ok = 1;
if (initrd_start)
ROOT_DEV = MKDEV(RAMDISK_MAJOR, 0);
else
#endif
ROOT_DEV = to_kdev_t(0x0802); /* sda2 (sda1 is for the kernel) */
printk("Boot arguments: %s\n", cmd_line);
request_region(0x20,0x20,"pic1");
request_region(0xa0,0x20,"pic2");
request_region(0x00,0x20,"dma1");
request_region(0x40,0x20,"timer");
request_region(0x80,0x10,"dma page reg");
request_region(0xc0,0x20,"dma2");
/* PCI bridge config space access area -
* appears to be not in devtree on longtrail. */
ioremap(GG2_PCI_CONFIG_BASE, 0x80000);
/*
* Temporary fixes for PCI devices.
* -- Geert
*/
hydra_init(); /* Mac I/O */
w83c553f_init(); /* PCI-ISA bridge and IDE */
/*
* Fix the Super I/O configuration
*/
sio_init();
#ifdef CONFIG_DUMMY_CONSOLE
conswitchp = &dummy_con;
#endif
/* my starmax 6000 needs this but the longtrail shouldn't do it -- Cort */
if ( !strncmp("MOT", get_property(find_path_device("/"),
"model", NULL),3) )
*memory_start_p = pmac_find_bridges(*memory_start_p, *memory_end_p);
}
#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
unsigned int chrp_ide_irq = 0;
int chrp_ide_ports_known = 0;
ide_ioreg_t chrp_ide_regbase[MAX_HWIFS];
ide_ioreg_t chrp_idedma_regbase;
void chrp_ide_init_hwif_ports (ide_ioreg_t *p, ide_ioreg_t base, int *irq)
{
ide_ioreg_t port = base;
int i = 8;
while (i--)
*p++ = port++;
*p++ = port;
if (irq != NULL)
*irq = chrp_ide_irq;
}
void chrp_ide_probe(void) {
struct pci_dev *pdev = pci_find_device(PCI_VENDOR_ID_WINBOND, PCI_DEVICE_ID_WINBOND_82C105, NULL);
chrp_ide_ports_known = 1;
if(pdev) {
chrp_ide_regbase[0]=pdev->base_address[0] &
PCI_BASE_ADDRESS_IO_MASK;
chrp_ide_regbase[1]=pdev->base_address[2] &
PCI_BASE_ADDRESS_IO_MASK;
chrp_idedma_regbase=pdev->base_address[4] &
PCI_BASE_ADDRESS_IO_MASK;
chrp_ide_irq=pdev->irq;
}
}
EXPORT_SYMBOL(chrp_ide_irq);
EXPORT_SYMBOL(chrp_ide_ports_known);
EXPORT_SYMBOL(chrp_ide_regbase);
EXPORT_SYMBOL(chrp_ide_probe);
#endif
|
