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1/*
2 * Big Endian PROM code for SNI RM machines
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) 2005-2006 Florian Lohoff (flo@rfc822.org)
9 * Copyright (C) 2005-2006 Thomas Bogendoerfer (tsbogend@alpha.franken.de)
10 */
11
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
23/* special SNI prom calls */
24/*
25 * This does not exist in all proms - SINIX compares
26 * the prom env variable "version" against "2.0008"
27 * or greater. If lesser it tries to probe interesting
28 * registers
29 */
30#define PROM_GET_MEMCONF 58
31#define PROM_GET_HWCONF 61
32
33#define PROM_VEC (u64 *)CKSEG1ADDR(0x1fc00000)
34#define PROM_ENTRY(x) (PROM_VEC + (x))
35
36#define ___prom_putchar ((int *(*)(int))PROM_ENTRY(PROM_PUTCHAR))
37#define ___prom_getenv ((char *(*)(char *))PROM_ENTRY(PROM_GETENV))
38#define ___prom_get_memconf ((void (*)(void *))PROM_ENTRY(PROM_GET_MEMCONF))
39#define ___prom_get_hwconf ((u32 (*)(void))PROM_ENTRY(PROM_GET_HWCONF))
40
41#ifdef CONFIG_64BIT
42
43/* O32 stack has to be 8-byte aligned. */
44static u64 o32_stk[4096];
45#define O32_STK &o32_stk[sizeof(o32_stk)]
46
47#define __PROM_O32(fun, arg) fun arg __asm__(#fun); \
48 __asm__(#fun " = call_o32")
49
50int __PROM_O32(__prom_putchar, (int *(*)(int), void *, int));
51char *__PROM_O32(__prom_getenv, (char *(*)(char *), void *, char *));
52void __PROM_O32(__prom_get_memconf, (void (*)(void *), void *, void *));
53u32 __PROM_O32(__prom_get_hwconf, (u32 (*)(void), void *));
54
55#define _prom_putchar(x) __prom_putchar(___prom_putchar, O32_STK, x)
56#define _prom_getenv(x) __prom_getenv(___prom_getenv, O32_STK, x)
57#define _prom_get_memconf(x) __prom_get_memconf(___prom_get_memconf, O32_STK, x)
58#define _prom_get_hwconf() __prom_get_hwconf(___prom_get_hwconf, O32_STK)
59
60#else
61#define _prom_putchar(x) ___prom_putchar(x)
62#define _prom_getenv(x) ___prom_getenv(x)
63#define _prom_get_memconf(x) ___prom_get_memconf(x)
64#define _prom_get_hwconf(x) ___prom_get_hwconf(x)
65#endif
66
67void prom_putchar(char c)
68{
69 _prom_putchar(c);
70}
71
72
73char *prom_getenv(char *s)
74{
75 return _prom_getenv(s);
76}
77
78void *prom_get_hwconf(void)
79{
80 u32 hwconf = _prom_get_hwconf();
81
82 if (hwconf == 0xffffffff)
83 return NULL;
84
85 return (void *)CKSEG1ADDR(hwconf);
86}
87
88void __init prom_free_prom_memory(void)
89{
90}
91
92/*
93 * /proc/cpuinfo system type
94 *
95 */
96char *system_type = "Unknown";
97const char *get_system_type(void)
98{
99 return system_type;
100}
101
102static void __init sni_mem_init(void)
103{
104 int i, memsize;
105 struct membank {
106 u32 size;
107 u32 base;
108 u32 size2;
109 u32 pad1;
110 u32 pad2;
111 } memconf[8];
112 int brd_type = *(unsigned char *)SNI_IDPROM_BRDTYPE;
113
114
115 /* MemSIZE from prom in 16MByte chunks */
116 memsize = *((unsigned char *) SNI_IDPROM_MEMSIZE) * 16;
117
118 pr_debug("IDProm memsize: %u MByte\n", memsize);
119
120 /* get memory bank layout from prom */
121 _prom_get_memconf(&memconf);
122
123 pr_debug("prom_get_mem_conf memory configuration:\n");
124 for (i = 0; i < 8 && memconf[i].size; i++) {
125 if (brd_type == SNI_BRD_PCI_TOWER ||
126 brd_type == SNI_BRD_PCI_TOWER_CPLUS) {
127 if (memconf[i].base >= 0x20000000 &&
128 memconf[i].base < 0x30000000)
129 memconf[i].base -= 0x20000000;
130 }
131 pr_debug("Bank%d: %08x @ %08x\n", i,
132 memconf[i].size, memconf[i].base);
133 add_memory_region(memconf[i].base, memconf[i].size,
134 BOOT_MEM_RAM);
135 }
136}
137
138void __init prom_init(void)
139{
140 int argc = fw_arg0;
141 u32 *argv = (u32 *)CKSEG0ADDR(fw_arg1);
142 int i;
143
144 sni_mem_init();
145
146 /* copy prom cmdline parameters to kernel cmdline */
147 for (i = 1; i < argc; i++) {
148 strcat(arcs_cmdline, (char *)CKSEG0ADDR(argv[i]));
149 if (i < (argc - 1))
150 strcat(arcs_cmdline, " ");
151 }
152}
1/*
2 * Big Endian PROM code for SNI RM machines
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) 2005-2006 Florian Lohoff (flo@rfc822.org)
9 * Copyright (C) 2005-2006 Thomas Bogendoerfer (tsbogend@alpha.franken.de)
10 */
11
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
23/* special SNI prom calls */
24/*
25 * This does not exist in all proms - SINIX compares
26 * the prom env variable "version" against "2.0008"
27 * or greater. If lesser it tries to probe interesting
28 * registers
29 */
30#define PROM_GET_MEMCONF 58
31#define PROM_GET_HWCONF 61
32
33#define PROM_VEC (u64 *)CKSEG1ADDR(0x1fc00000)
34#define PROM_ENTRY(x) (PROM_VEC + (x))
35
36#define ___prom_putchar ((int *(*)(int))PROM_ENTRY(PROM_PUTCHAR))
37#define ___prom_getenv ((char *(*)(char *))PROM_ENTRY(PROM_GETENV))
38#define ___prom_get_memconf ((void (*)(void *))PROM_ENTRY(PROM_GET_MEMCONF))
39#define ___prom_get_hwconf ((u32 (*)(void))PROM_ENTRY(PROM_GET_HWCONF))
40
41#ifdef CONFIG_64BIT
42
43/* O32 stack has to be 8-byte aligned. */
44static u64 o32_stk[4096];
45#define O32_STK &o32_stk[sizeof(o32_stk)]
46
47#define __PROM_O32(fun, arg) fun arg __asm__(#fun); \
48 __asm__(#fun " = call_o32")
49
50int __PROM_O32(__prom_putchar, (int *(*)(int), void *, int));
51char *__PROM_O32(__prom_getenv, (char *(*)(char *), void *, char *));
52void __PROM_O32(__prom_get_memconf, (void (*)(void *), void *, void *));
53u32 __PROM_O32(__prom_get_hwconf, (u32 (*)(void), void *));
54
55#define _prom_putchar(x) __prom_putchar(___prom_putchar, O32_STK, x)
56#define _prom_getenv(x) __prom_getenv(___prom_getenv, O32_STK, x)
57#define _prom_get_memconf(x) __prom_get_memconf(___prom_get_memconf, O32_STK, x)
58#define _prom_get_hwconf() __prom_get_hwconf(___prom_get_hwconf, O32_STK)
59
60#else
61#define _prom_putchar(x) ___prom_putchar(x)
62#define _prom_getenv(x) ___prom_getenv(x)
63#define _prom_get_memconf(x) ___prom_get_memconf(x)
64#define _prom_get_hwconf(x) ___prom_get_hwconf(x)
65#endif
66
67void prom_putchar(char c)
68{
69 _prom_putchar(c);
70}
71
72
73char *prom_getenv(char *s)
74{
75 return _prom_getenv(s);
76}
77
78void *prom_get_hwconf(void)
79{
80 u32 hwconf = _prom_get_hwconf();
81
82 if (hwconf == 0xffffffff)
83 return NULL;
84
85 return (void *)CKSEG1ADDR(hwconf);
86}
87
88void __init prom_free_prom_memory(void)
89{
90}
91
92/*
93 * /proc/cpuinfo system type
94 *
95 */
96char *system_type = "Unknown";
97const char *get_system_type(void)
98{
99 return system_type;
100}
101
102static void __init sni_mem_init(void)
103{
104 int i, memsize;
105 struct membank {
106 u32 size;
107 u32 base;
108 u32 size2;
109 u32 pad1;
110 u32 pad2;
111 } memconf[8];
112 int brd_type = *(unsigned char *)SNI_IDPROM_BRDTYPE;
113
114
115 /* MemSIZE from prom in 16MByte chunks */
116 memsize = *((unsigned char *) SNI_IDPROM_MEMSIZE) * 16;
117
118 pr_debug("IDProm memsize: %u MByte\n", memsize);
119
120 /* get memory bank layout from prom */
121 _prom_get_memconf(&memconf);
122
123 pr_debug("prom_get_mem_conf memory configuration:\n");
124 for (i = 0; i < 8 && memconf[i].size; i++) {
125 if (brd_type == SNI_BRD_PCI_TOWER ||
126 brd_type == SNI_BRD_PCI_TOWER_CPLUS) {
127 if (memconf[i].base >= 0x20000000 &&
128 memconf[i].base < 0x30000000)
129 memconf[i].base -= 0x20000000;
130 }
131 pr_debug("Bank%d: %08x @ %08x\n", i,
132 memconf[i].size, memconf[i].base);
133 add_memory_region(memconf[i].base, memconf[i].size,
134 BOOT_MEM_RAM);
135 }
136}
137
138void __init prom_init(void)
139{
140 int argc = fw_arg0;
141 u32 *argv = (u32 *)CKSEG0ADDR(fw_arg1);
142 int i;
143
144 sni_mem_init();
145
146 /* copy prom cmdline parameters to kernel cmdline */
147 for (i = 1; i < argc; i++) {
148 strcat(arcs_cmdline, (char *)CKSEG0ADDR(argv[i]));
149 if (i < (argc - 1))
150 strcat(arcs_cmdline, " ");
151 }
152}