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12#include <linux/kernel.h>
13#include <linux/init.h>
14#include <linux/string.h>
15#include <linux/console.h>
16
17#include <asm/addrspace.h>
18#include <asm/sni.h>
19#include <asm/mipsprom.h>
20#include <asm/mipsregs.h>
21#include <asm/bootinfo.h>
22#include <asm/setup.h>
23
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29
30
31#define PROM_GET_MEMCONF 58
32#define PROM_GET_HWCONF 61
33
34#define PROM_VEC (u64 *)CKSEG1ADDR(0x1fc00000)
35#define PROM_ENTRY(x) (PROM_VEC + (x))
36
37#define ___prom_putchar ((int *(*)(int))PROM_ENTRY(PROM_PUTCHAR))
38#define ___prom_getenv ((char *(*)(char *))PROM_ENTRY(PROM_GETENV))
39#define ___prom_get_memconf ((void (*)(void *))PROM_ENTRY(PROM_GET_MEMCONF))
40#define ___prom_get_hwconf ((u32 (*)(void))PROM_ENTRY(PROM_GET_HWCONF))
41
42#ifdef CONFIG_64BIT
43
44
45static u64 o32_stk[4096];
46#define O32_STK (&o32_stk[ARRAY_SIZE(o32_stk)])
47
48#define __PROM_O32(fun, arg) fun arg __asm__(#fun); \
49 __asm__(#fun " = call_o32")
50
51int __PROM_O32(__prom_putchar, (int *(*)(int), void *, int));
52char *__PROM_O32(__prom_getenv, (char *(*)(char *), void *, char *));
53void __PROM_O32(__prom_get_memconf, (void (*)(void *), void *, void *));
54u32 __PROM_O32(__prom_get_hwconf, (u32 (*)(void), void *));
55
56#define _prom_putchar(x) __prom_putchar(___prom_putchar, O32_STK, x)
57#define _prom_getenv(x) __prom_getenv(___prom_getenv, O32_STK, x)
58#define _prom_get_memconf(x) __prom_get_memconf(___prom_get_memconf, O32_STK, x)
59#define _prom_get_hwconf() __prom_get_hwconf(___prom_get_hwconf, O32_STK)
60
61#else
62#define _prom_putchar(x) ___prom_putchar(x)
63#define _prom_getenv(x) ___prom_getenv(x)
64#define _prom_get_memconf(x) ___prom_get_memconf(x)
65#define _prom_get_hwconf(x) ___prom_get_hwconf(x)
66#endif
67
68void prom_putchar(char c)
69{
70 _prom_putchar(c);
71}
72
73
74char *prom_getenv(char *s)
75{
76 return _prom_getenv(s);
77}
78
79void *prom_get_hwconf(void)
80{
81 u32 hwconf = _prom_get_hwconf();
82
83 if (hwconf == 0xffffffff)
84 return NULL;
85
86 return (void *)CKSEG1ADDR(hwconf);
87}
88
89void __init prom_free_prom_memory(void)
90{
91}
92
93
94
95
96
97char *system_type = "Unknown";
98const char *get_system_type(void)
99{
100 return system_type;
101}
102
103static void __init sni_mem_init(void)
104{
105 int i, memsize;
106 struct membank {
107 u32 size;
108 u32 base;
109 u32 size2;
110 u32 pad1;
111 u32 pad2;
112 } memconf[8];
113 int brd_type = *(unsigned char *)SNI_IDPROM_BRDTYPE;
114
115
116
117 memsize = *((unsigned char *) SNI_IDPROM_MEMSIZE) * 16;
118
119 pr_debug("IDProm memsize: %u MByte\n", memsize);
120
121
122 _prom_get_memconf(&memconf);
123
124 pr_debug("prom_get_mem_conf memory configuration:\n");
125 for (i = 0; i < 8 && memconf[i].size; i++) {
126 if (brd_type == SNI_BRD_PCI_TOWER ||
127 brd_type == SNI_BRD_PCI_TOWER_CPLUS) {
128 if (memconf[i].base >= 0x20000000 &&
129 memconf[i].base < 0x30000000)
130 memconf[i].base -= 0x20000000;
131 }
132 pr_debug("Bank%d: %08x @ %08x\n", i,
133 memconf[i].size, memconf[i].base);
134 add_memory_region(memconf[i].base, memconf[i].size,
135 BOOT_MEM_RAM);
136 }
137}
138
139void __init prom_init(void)
140{
141 int argc = fw_arg0;
142 u32 *argv = (u32 *)CKSEG0ADDR(fw_arg1);
143 int i;
144
145 sni_mem_init();
146
147
148 for (i = 1; i < argc; i++) {
149 strcat(arcs_cmdline, (char *)CKSEG0ADDR(argv[i]));
150 if (i < (argc - 1))
151 strcat(arcs_cmdline, " ");
152 }
153}
154