77 lines
1.8 KiB
C
77 lines
1.8 KiB
C
|
/*
|
||
|
|
* Copyright (C) 2015 ROCKCHIP, Inc.
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License as published by
|
||
|
|
* the Free Software Foundation; either version 2 of the License, or
|
||
|
|
* (at your option) any later version.
|
||
|
|
*
|
||
|
|
* This program is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
* GNU General Public License for more details.
|
||
|
|
*/
|
||
|
|
#include <linux/module.h>
|
||
|
|
#include <linux/memblock.h>
|
||
|
|
#include <linux/of.h>
|
||
|
|
#include <linux/of_address.h>
|
||
|
|
|
||
|
|
#define ETH_MAC_OFFSET 36
|
||
|
|
|
||
|
|
static u8 eth_mac[6];
|
||
|
|
|
||
|
|
void rk_devinfo_get_eth_mac(u8 *mac)
|
||
|
|
{
|
||
|
|
memcpy(mac, eth_mac, 6);
|
||
|
|
pr_info("%s: %02x.%02x.%02x.%02x.%02x.%02x\n", __func__,
|
||
|
|
eth_mac[0], eth_mac[1], eth_mac[2],
|
||
|
|
eth_mac[3], eth_mac[4], eth_mac[5]);
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL_GPL(rk_devinfo_get_eth_mac);
|
||
|
|
|
||
|
|
static int __init rk_devinfo_init(void)
|
||
|
|
{
|
||
|
|
int ret;
|
||
|
|
u8 *vaddr;
|
||
|
|
struct device_node *node;
|
||
|
|
struct resource res;
|
||
|
|
phys_addr_t start, size;
|
||
|
|
void *begin, *end;
|
||
|
|
|
||
|
|
node = of_find_node_by_name(NULL, "stb-devinfo");
|
||
|
|
if (!node) {
|
||
|
|
pr_err("%s.%d: fail to get node\n", __func__, __LINE__);
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
|
||
|
|
ret = of_address_to_resource(node, 0, &res);
|
||
|
|
if (ret) {
|
||
|
|
pr_err("%s.%d: fail to get resource\n", __func__, __LINE__);
|
||
|
|
of_node_put(node);
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
|
||
|
|
of_node_put(node);
|
||
|
|
|
||
|
|
start = res.start;
|
||
|
|
size = resource_size(&res);
|
||
|
|
if (!size) {
|
||
|
|
pr_err("%s.%d: size = 0\n", __func__, __LINE__);
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
vaddr = phys_to_virt(start);
|
||
|
|
/* copy eth mac addr */
|
||
|
|
memcpy(eth_mac, vaddr + ETH_MAC_OFFSET, 6);
|
||
|
|
|
||
|
|
begin = phys_to_virt(start);
|
||
|
|
end = phys_to_virt(start + size);
|
||
|
|
memblock_free(start, size);
|
||
|
|
free_reserved_area(begin, end, -1, "stb_devinfo");
|
||
|
|
|
||
|
|
out:
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
module_init(rk_devinfo_init);
|