Release 4.11 arch/c6x/kernel/soc.c
/*
* Miscellaneous SoC-specific hooks.
*
* Copyright (C) 2011 Texas Instruments Incorporated
* Author: Mark Salter <msalter@redhat.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/module.h>
#include <linux/ctype.h>
#include <linux/etherdevice.h>
#include <asm/setup.h>
#include <asm/soc.h>
struct soc_ops soc_ops;
int soc_get_exception(void)
{
if (!soc_ops.get_exception)
return -1;
return soc_ops.get_exception();
}
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void soc_assert_event(unsigned int evt)
{
if (soc_ops.assert_event)
soc_ops.assert_event(evt);
}
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static u8 cmdline_mac[6];
static int __init get_mac_addr_from_cmdline(char *str)
{
int count, i, val;
for (count = 0; count < 6 && *str; count++, str += 3) {
if (!isxdigit(str[0]) || !isxdigit(str[1]))
return 0;
if (str[2] != ((count < 5) ? ':' : '\0'))
return 0;
for (i = 0, val = 0; i < 2; i++) {
val = val << 4;
val |= isdigit(str[i]) ?
str[i] - '0' : toupper(str[i]) - 'A' + 10;
}
cmdline_mac[count] = val;
}
return 1;
}
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__setup("emac_addr=", get_mac_addr_from_cmdline);
/*
* Setup the MAC address for SoC ethernet devices.
*
* Before calling this function, the ethernet driver will have
* initialized the addr with local-mac-address from the device
* tree (if found). Allow command line to override, but not
* the fused address.
*/
int soc_mac_addr(unsigned int index, u8 *addr)
{
int i, have_dt_mac = 0, have_cmdline_mac = 0, have_fuse_mac = 0;
for (i = 0; i < 6; i++) {
if (cmdline_mac[i])
have_cmdline_mac = 1;
if (c6x_fuse_mac[i])
have_fuse_mac = 1;
if (addr[i])
have_dt_mac = 1;
}
/* cmdline overrides all */
if (have_cmdline_mac)
memcpy(addr, cmdline_mac, 6);
else if (!have_dt_mac) {
if (have_fuse_mac)
memcpy(addr, c6x_fuse_mac, 6);
else
eth_random_addr(addr);
}
/* adjust for specific EMAC device */
addr[5] += index * c6x_num_cores;
return 1;
}
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EXPORT_SYMBOL_GPL(soc_mac_addr);
Overall Contributors
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| Total | 365 | 100.00% | 2 | 100.00% |
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