nvram.c (688d794c4c3f8b08c814381ee2edd3ede5856056) nvram.c (97367519d7dac94de566796f034d5f72cbc671f7)
1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
7 * Copyright (C) 2008 Florian Fainelli <florian@openwrt.org>
8 * Copyright (C) 2012 Jonas Gorski <jonas.gorski@gmail.com>

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33 u32 checksum_old;
34 u8 reserved3[720];
35 u32 checksum_high;
36};
37
38static struct bcm963xx_nvram nvram;
39static int mac_addr_used;
40
1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
7 * Copyright (C) 2008 Florian Fainelli <florian@openwrt.org>
8 * Copyright (C) 2012 Jonas Gorski <jonas.gorski@gmail.com>

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33 u32 checksum_old;
34 u8 reserved3[720];
35 u32 checksum_high;
36};
37
38static struct bcm963xx_nvram nvram;
39static int mac_addr_used;
40
41int __init bcm63xx_nvram_init(void *addr)
41void __init bcm63xx_nvram_init(void *addr)
42{
43 unsigned int check_len;
44 u32 crc, expected_crc;
45
46 /* extract nvram data */
47 memcpy(&nvram, addr, sizeof(nvram));
48
49 /* check checksum before using data */

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55 check_len = sizeof(nvram);
56 expected_crc = nvram.checksum_high;
57 nvram.checksum_high = 0;
58 }
59
60 crc = crc32_le(~0, (u8 *)&nvram, check_len);
61
62 if (crc != expected_crc)
42{
43 unsigned int check_len;
44 u32 crc, expected_crc;
45
46 /* extract nvram data */
47 memcpy(&nvram, addr, sizeof(nvram));
48
49 /* check checksum before using data */

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55 check_len = sizeof(nvram);
56 expected_crc = nvram.checksum_high;
57 nvram.checksum_high = 0;
58 }
59
60 crc = crc32_le(~0, (u8 *)&nvram, check_len);
61
62 if (crc != expected_crc)
63 return -EINVAL;
64
65 return 0;
63 pr_warn("nvram checksum failed, contents may be invalid (expected %08x, got %08x)\n",
64 expected_crc, crc);
66}
67
68u8 *bcm63xx_nvram_get_name(void)
69{
70 return nvram.name;
71}
72EXPORT_SYMBOL(bcm63xx_nvram_get_name);
73

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66
67u8 *bcm63xx_nvram_get_name(void)
68{
69 return nvram.name;
70}
71EXPORT_SYMBOL(bcm63xx_nvram_get_name);
72

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