1/*
2 *  Compex's MyLoader specific prom routines
3 *
4 *  Copyright (C) 2007-2008 Gabor Juhos <juhosg@openwrt.org>
5 *
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.
9 *
10 */
11
12#include <linux/kernel.h>
13#include <linux/init.h>
14#include <linux/types.h>
15#include <linux/string.h>
16
17#include <asm/addrspace.h>
18#include <asm/fw/myloader/myloader.h>
19
20#define SYS_PARAMS_ADDR		KSEG1ADDR(0x80000800)
21#define BOARD_PARAMS_ADDR	KSEG1ADDR(0x80000A00)
22#define PART_TABLE_ADDR		KSEG1ADDR(0x80000C00)
23#define BOOT_PARAMS_ADDR	KSEG1ADDR(0x80000E00)
24
25static struct myloader_info myloader_info __initdata;
26static int myloader_found __initdata;
27
28struct myloader_info * __init myloader_get_info(void)
29{
30	struct mylo_system_params *sysp;
31	struct mylo_board_params *boardp;
32	struct mylo_partition_table *parts;
33
34	if (myloader_found)
35		return &myloader_info;
36
37	sysp = (struct mylo_system_params *)(SYS_PARAMS_ADDR);
38	boardp = (struct mylo_board_params *)(BOARD_PARAMS_ADDR);
39	parts = (struct mylo_partition_table *)(PART_TABLE_ADDR);
40
41	printk(KERN_DEBUG "MyLoader: sysp=%08x, boardp=%08x, parts=%08x\n",
42		sysp->magic, boardp->magic, parts->magic);
43
44	/* Check for some magic numbers */
45	if (sysp->magic != MYLO_MAGIC_SYS_PARAMS ||
46	    boardp->magic != MYLO_MAGIC_BOARD_PARAMS ||
47	    le32_to_cpu(parts->magic) != MYLO_MAGIC_PARTITIONS)
48		return NULL;
49
50	printk(KERN_DEBUG "MyLoader: id=%04x:%04x, sub_id=%04x:%04x\n",
51		sysp->vid, sysp->did, sysp->svid, sysp->sdid);
52
53	myloader_info.vid = sysp->vid;
54	myloader_info.did = sysp->did;
55	myloader_info.svid = sysp->svid;
56	myloader_info.sdid = sysp->sdid;
57
58	memcpy(myloader_info.macs, boardp->addr, sizeof(myloader_info.macs));
59
60	myloader_found = 1;
61
62	return &myloader_info;
63}
64