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
|
/*
* Big Endian PROM code for SNI RM machines
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2005-2006 Florian Lohoff (flo@rfc822.org)
* Copyright (C) 2005-2006 Thomas Bogendoerfer (tsbogend@alpha.franken.de)
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/string.h>
#include <asm/addrspace.h>
#include <asm/sni.h>
#include <asm/mipsprom.h>
#include <asm/bootinfo.h>
/* special SNI prom calls */
/*
* This does not exist in all proms - SINIX compares
* the prom env variable "version" against "2.0008"
* or greater. If lesser it tries to probe interesting
* registers
*/
#define PROM_GET_MEMCONF 58
#define PROM_VEC (u64 *)CKSEG1ADDR(0x1fc00000)
#define PROM_ENTRY(x) (PROM_VEC + (x))
#undef DEBUG
#ifdef DEBUG
#define DBG_PRINTF(x...) prom_printf(x)
#else
#define DBG_PRINTF(x...)
#endif
static int *(*__prom_putchar)(int) = (int *(*)(int))PROM_ENTRY(PROM_PUTCHAR);
static char *(*__prom_getenv)(char *) = (char *(*)(char *))PROM_ENTRY(PROM_GETENV);
static void (*__prom_get_memconf)(void *) = (void (*)(void *))PROM_ENTRY(PROM_GET_MEMCONF);
char *prom_getenv (char *s)
{
return __prom_getenv(s);
}
void prom_printf(char *fmt, ...)
{
va_list args;
char ppbuf[1024];
char *bptr;
va_start(args, fmt);
vsprintf(ppbuf, fmt, args);
bptr = ppbuf;
while (*bptr != 0) {
if (*bptr == '\n')
__prom_putchar('\r');
__prom_putchar(*bptr++);
}
va_end(args);
}
void __init prom_free_prom_memory(void)
{
}
/*
* /proc/cpuinfo system type
*
*/
static const char *systype = "Unknown";
const char *get_system_type(void)
{
return systype;
}
#define SNI_IDPROM_BASE 0xbff00000
#define SNI_IDPROM_MEMSIZE (SNI_IDPROM_BASE+0x28) /* Memsize in 16MB quantities */
#define SNI_IDPROM_BRDTYPE (SNI_IDPROM_BASE+0x29) /* Board Type */
#define SNI_IDPROM_CPUTYPE (SNI_IDPROM_BASE+0x30) /* CPU Type */
#define SNI_IDPROM_SIZE 0x1000
#ifdef DEBUG
static void sni_idprom_dump(void)
{
int i;
prom_printf("SNI IDProm dump (first 128byte):\n");
for(i=0;i<128;i++) {
if (i%16 == 0)
prom_printf("%04x ", i);
prom_printf("%02x ", *(unsigned char *) (SNI_IDPROM_BASE+i));
if (i%16 == 15)
prom_printf("\n");
}
}
#endif
static void sni_mem_init(void )
{
int i, memsize;
struct membank {
u32 size;
u32 base;
u32 size2;
u32 pad1;
u32 pad2;
} memconf[8];
/* MemSIZE from prom in 16MByte chunks */
memsize=*((unsigned char *) SNI_IDPROM_MEMSIZE) * 16;
DBG_PRINTF("IDProm memsize: %lu MByte\n", memsize);
/* get memory bank layout from prom */
__prom_get_memconf(&memconf);
DBG_PRINTF("prom_get_mem_conf memory configuration:\n");
for(i=0;i<8 && memconf[i].size;i++) {
prom_printf("Bank%d: %08x @ %08x\n", i,
memconf[i].size, memconf[i].base);
add_memory_region(memconf[i].base, memconf[i].size, BOOT_MEM_RAM);
}
}
void __init prom_init(void)
{
int argc = fw_arg0;
char **argv = (void *)fw_arg1;
unsigned int sni_brd_type = *(unsigned char *) SNI_IDPROM_BRDTYPE;
int i;
DBG_PRINTF("Found SNI brdtype %02x\n", sni_brd_type);
#ifdef DEBUG
sni_idprom_dump();
#endif
sni_mem_init();
/* copy prom cmdline parameters to kernel cmdline */
for (i = 1; i < argc; i++) {
strcat(arcs_cmdline, argv[i]);
if (i < (argc - 1))
strcat(arcs_cmdline, " ");
}
}
|
