OpenWrt – Blame information for rev 2

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1 office 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/types.h>
13 #include <linux/kernel.h>
14 #include <linux/init.h>
15 #include <linux/string.h>
16  
17 #include <asm/bootinfo.h>
18 #include <asm/addrspace.h>
19 #include <asm/byteorder.h>
20  
21 #include <asm/mach-adm5120/adm5120_defs.h>
22 #include <prom/myloader.h>
23 #include "prom_read.h"
24  
25 #define SYS_PARAMS_ADDR KSEG1ADDR(ADM5120_SRAM0_BASE+0x0F000)
26 #define BOARD_PARAMS_ADDR KSEG1ADDR(ADM5120_SRAM0_BASE+0x0F800)
27 #define PART_TABLE_ADDR KSEG1ADDR(ADM5120_SRAM0_BASE+0x10000)
28  
29 static int myloader_found;
30  
31 struct myloader_info myloader_info;
32  
33 int __init myloader_present(void)
34 {
35 struct mylo_system_params *sysp;
36 struct mylo_board_params *boardp;
37 struct mylo_partition_table *parts;
38 int i;
39  
40 if (myloader_found)
41 goto out;
42  
43 sysp = (struct mylo_system_params *)(SYS_PARAMS_ADDR);
44 boardp = (struct mylo_board_params *)(BOARD_PARAMS_ADDR);
45 parts = (struct mylo_partition_table *)(PART_TABLE_ADDR);
46  
47 /* Check for some magic numbers */
48 if ((le32_to_cpu(sysp->magic) != MYLO_MAGIC_SYS_PARAMS) ||
49 (le32_to_cpu(boardp->magic) != MYLO_MAGIC_BOARD_PARAMS) ||
50 (le32_to_cpu(parts->magic) != MYLO_MAGIC_PARTITIONS))
51 goto out;
52  
53 myloader_info.vid = le32_to_cpu(sysp->vid);
54 myloader_info.did = le32_to_cpu(sysp->did);
55 myloader_info.svid = le32_to_cpu(sysp->svid);
56 myloader_info.sdid = le32_to_cpu(sysp->sdid);
57  
58 for (i = 0; i < MYLO_ETHADDR_COUNT; i++) {
59 int j;
60 for (j = 0; j < 6; j++)
61 myloader_info.macs[i][j] = boardp->addr[i].mac[j];
62 }
63  
64 myloader_found = 1;
65  
66 out:
67 return myloader_found;
68 }