mirror of
https://github.com/torvalds/linux.git
synced 2024-11-18 01:51:53 +00:00
b0a119fd99
This reverts commit 5bdb102b3f.
Brian Norris <computersforpeace@gmail.com> is reporting:
Ralf,
Please revert this and send it to Linus (or else, I can send it myself).
This is causing build failures, because I didn't take the rest of
Simon's series yet.
drivers/mtd/bcm63xxpart.c: In function 'bcm63xx_parse_cfe_partitions':
drivers/mtd/bcm63xxpart.c:93:2: error: implicit declaration of function
'bcm63xx_nvram_get_psi_size' [-Werror=implicit-function-declaration]
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
References: https://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20160126191607.GA111152%40google.com
99 lines
2.2 KiB
C
99 lines
2.2 KiB
C
/*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*
|
|
* Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
|
|
* Copyright (C) 2008 Florian Fainelli <florian@openwrt.org>
|
|
* Copyright (C) 2012 Jonas Gorski <jonas.gorski@gmail.com>
|
|
*/
|
|
|
|
#define pr_fmt(fmt) "bcm63xx_nvram: " fmt
|
|
|
|
#include <linux/bcm963xx_nvram.h>
|
|
#include <linux/init.h>
|
|
#include <linux/crc32.h>
|
|
#include <linux/export.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/if_ether.h>
|
|
|
|
#include <bcm63xx_nvram.h>
|
|
|
|
#define BCM63XX_DEFAULT_PSI_SIZE 64
|
|
|
|
static struct bcm963xx_nvram nvram;
|
|
static int mac_addr_used;
|
|
|
|
void __init bcm63xx_nvram_init(void *addr)
|
|
{
|
|
u32 crc, expected_crc;
|
|
u8 hcs_mac_addr[ETH_ALEN] = { 0x00, 0x10, 0x18, 0xff, 0xff, 0xff };
|
|
|
|
/* extract nvram data */
|
|
memcpy(&nvram, addr, BCM963XX_NVRAM_V5_SIZE);
|
|
|
|
/* check checksum before using data */
|
|
if (bcm963xx_nvram_checksum(&nvram, &expected_crc, &crc))
|
|
pr_warn("nvram checksum failed, contents may be invalid (expected %08x, got %08x)\n",
|
|
expected_crc, crc);
|
|
|
|
/* Cable modems have a different NVRAM which is embedded in the eCos
|
|
* firmware and not easily extractible, give at least a MAC address
|
|
* pool.
|
|
*/
|
|
if (BCMCPU_IS_3368()) {
|
|
memcpy(nvram.mac_addr_base, hcs_mac_addr, ETH_ALEN);
|
|
nvram.mac_addr_count = 2;
|
|
}
|
|
}
|
|
|
|
u8 *bcm63xx_nvram_get_name(void)
|
|
{
|
|
return nvram.name;
|
|
}
|
|
EXPORT_SYMBOL(bcm63xx_nvram_get_name);
|
|
|
|
int bcm63xx_nvram_get_mac_address(u8 *mac)
|
|
{
|
|
u8 *oui;
|
|
int count;
|
|
|
|
if (mac_addr_used >= nvram.mac_addr_count) {
|
|
pr_err("not enough mac addresses\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
memcpy(mac, nvram.mac_addr_base, ETH_ALEN);
|
|
oui = mac + ETH_ALEN/2 - 1;
|
|
count = mac_addr_used;
|
|
|
|
while (count--) {
|
|
u8 *p = mac + ETH_ALEN - 1;
|
|
|
|
do {
|
|
(*p)++;
|
|
if (*p != 0)
|
|
break;
|
|
p--;
|
|
} while (p != oui);
|
|
|
|
if (p == oui) {
|
|
pr_err("unable to fetch mac address\n");
|
|
return -ENODEV;
|
|
}
|
|
}
|
|
|
|
mac_addr_used++;
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(bcm63xx_nvram_get_mac_address);
|
|
|
|
int bcm63xx_nvram_get_psi_size(void)
|
|
{
|
|
if (nvram.psi_size > 0)
|
|
return nvram.psi_size;
|
|
|
|
return BCM63XX_DEFAULT_PSI_SIZE;
|
|
}
|
|
EXPORT_SYMBOL(bcm63xx_nvram_get_psi_size);
|