2 * ZyXEL's Bootbase specific prom routines
4 * Copyright (C) 2007-2008 Gabor Juhos <juhosg@openwrt.org>
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 as published
8 * by the Free Software Foundation.
12 #include <linux/types.h>
13 #include <linux/autoconf.h>
14 #include <linux/kernel.h>
15 #include <linux/init.h>
16 #include <linux/string.h>
18 #include <asm/bootinfo.h>
19 #include <asm/addrspace.h>
20 #include <asm/byteorder.h>
22 #include <asm/mach-adm5120/adm5120_defs.h>
23 #include <prom/zynos.h>
24 #include "prom_read.h"
26 #define ZYNOS_INFO_ADDR KSEG1ADDR(ADM5120_SRAM0_BASE+0x3F90)
27 #define ZYNOS_HDBG_ADDR KSEG1ADDR(ADM5120_SRAM0_BASE+0x4000)
28 #define BOOTEXT_ADDR_MIN KSEG1ADDR(ADM5120_SRAM0_BASE)
29 #define BOOTEXT_ADDR_MAX (BOOTEXT_ADDR_MIN + (2*1024*1024))
31 static int bootbase_found;
32 static struct zynos_board_info *board_info;
34 struct bootbase_info bootbase_info;
36 static inline int bootbase_dbgarea_present(u8 *data)
40 t = prom_read_be32(data+5);
41 if (t != ZYNOS_MAGIC_DBGAREA1)
44 t = prom_read_be32(data+9);
45 if (t != ZYNOS_MAGIC_DBGAREA2)
51 static inline u32 bootbase_get_bootext_addr(void)
53 return prom_read_be32(&board_info->bootext_addr);
56 static inline void bootbase_get_mac(u8 *mac)
60 for (i = 0; i < 6; i++)
61 mac[i] = board_info->mac[i];
64 static inline u16 bootbase_get_vendor_id(void)
66 #define CHECK_VENDOR(n) (strnicmp(board_info->vendor, (n), strlen(n)) == 0)
67 unsigned char vendor[ZYNOS_NAME_LEN];
70 for (i = 0; i < ZYNOS_NAME_LEN; i++)
71 vendor[i] = board_info->vendor[i];
73 if CHECK_VENDOR(ZYNOS_VENDOR_ZYXEL)
74 return ZYNOS_VENDOR_ID_ZYXEL;
76 if CHECK_VENDOR(ZYNOS_VENDOR_DLINK)
77 return ZYNOS_VENDOR_ID_DLINK;
79 if CHECK_VENDOR(ZYNOS_VENDOR_LUCENT)
80 return ZYNOS_VENDOR_ID_LUCENT;
82 if CHECK_VENDOR(ZYNOS_VENDOR_NETGEAR)
83 return ZYNOS_VENDOR_ID_NETGEAR;
85 return ZYNOS_VENDOR_ID_OTHER;
88 static inline u16 bootbase_get_board_id(void)
90 return prom_read_be16(&board_info->board_id);
93 int __init bootbase_present(void)
100 /* check presence of the dbgarea */
101 if (bootbase_dbgarea_present((u8 *)ZYNOS_HDBG_ADDR) == 0)
104 board_info = (struct zynos_board_info *)(ZYNOS_INFO_ADDR);
106 /* check for a valid BootExt address */
107 t = bootbase_get_bootext_addr();
108 if ((t < BOOTEXT_ADDR_MIN) || (t > BOOTEXT_ADDR_MAX))
111 bootbase_info.vendor_id = bootbase_get_vendor_id();
112 bootbase_info.board_id = bootbase_get_board_id();
113 bootbase_get_mac(bootbase_info.mac);
118 return bootbase_found;