blob: 063281e3f7a8b24192925ad8aa832d90802d1353 (
plain)
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
|
/*
* ZyXEL's Bootbase specific prom routines
*
* Copyright (C) 2007-2008 Gabor Juhos <juhosg@openwrt.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*
*/
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/string.h>
#include <asm/bootinfo.h>
#include <asm/addrspace.h>
#include <asm/byteorder.h>
#include <asm/mach-adm5120/adm5120_defs.h>
#include <prom/zynos.h>
#include "prom_read.h"
#define ZYNOS_INFO_ADDR KSEG1ADDR(ADM5120_SRAM0_BASE+0x3F90)
#define ZYNOS_HDBG_ADDR KSEG1ADDR(ADM5120_SRAM0_BASE+0x4000)
#define BOOTEXT_ADDR_MIN KSEG1ADDR(ADM5120_SRAM0_BASE)
#define BOOTEXT_ADDR_MAX (BOOTEXT_ADDR_MIN + (2*1024*1024))
static int bootbase_found;
static struct zynos_board_info *board_info;
struct bootbase_info bootbase_info;
static inline int bootbase_dbgarea_present(u8 *data)
{
u32 t;
t = prom_read_be32(data+5);
if (t != ZYNOS_MAGIC_DBGAREA1)
return 0;
t = prom_read_be32(data+9);
if (t != ZYNOS_MAGIC_DBGAREA2)
return 0;
return 1;
}
static inline u32 bootbase_get_bootext_addr(void)
{
return prom_read_be32(&board_info->bootext_addr);
}
static inline void bootbase_get_mac(u8 *mac)
{
int i;
for (i = 0; i < 6; i++)
mac[i] = board_info->mac[i];
}
static inline u16 bootbase_get_vendor_id(void)
{
#define CHECK_VENDOR(n) (strnicmp(board_info->vendor, (n), strlen(n)) == 0)
unsigned char vendor[ZYNOS_NAME_LEN];
int i;
for (i = 0; i < ZYNOS_NAME_LEN; i++)
vendor[i] = board_info->vendor[i];
if CHECK_VENDOR(ZYNOS_VENDOR_ZYXEL)
return ZYNOS_VENDOR_ID_ZYXEL;
if CHECK_VENDOR(ZYNOS_VENDOR_DLINK)
return ZYNOS_VENDOR_ID_DLINK;
if CHECK_VENDOR(ZYNOS_VENDOR_LUCENT)
return ZYNOS_VENDOR_ID_LUCENT;
if CHECK_VENDOR(ZYNOS_VENDOR_NETGEAR)
return ZYNOS_VENDOR_ID_NETGEAR;
return ZYNOS_VENDOR_ID_OTHER;
}
static inline u16 bootbase_get_board_id(void)
{
return prom_read_be16(&board_info->board_id);
}
int __init bootbase_present(void)
{
u32 t;
if (bootbase_found)
goto out;
/* check presence of the dbgarea */
if (bootbase_dbgarea_present((u8 *)ZYNOS_HDBG_ADDR) == 0)
goto out;
board_info = (struct zynos_board_info *)(ZYNOS_INFO_ADDR);
/* check for a valid BootExt address */
t = bootbase_get_bootext_addr();
if ((t < BOOTEXT_ADDR_MIN) || (t > BOOTEXT_ADDR_MAX))
goto out;
bootbase_info.vendor_id = bootbase_get_vendor_id();
bootbase_info.board_id = bootbase_get_board_id();
bootbase_get_mac(bootbase_info.mac);
bootbase_found = 1;
out:
return bootbase_found;
}
|
