u-boot/arch/blackfin/include/asm/net.h
Peter Tyser 819833af39 Move architecture-specific includes to arch/$ARCH/include/asm
This helps to clean up the include/ directory so that it only contains
non-architecture-specific headers and also matches Linux's directory
layout which many U-Boot developers are already familiar with.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
2010-04-13 09:13:12 +02:00

28 lines
671 B
C

/*
* net.h - misc Blackfin network helpers
*
* Copyright (c) 2008-2009 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
#ifndef __ASM_BFIN_RAND_MAC__
#define __ASM_BFIN_RAND_MAC__
/* If the board does not have a real MAC assigned to it, then generate a
* locally administrated pseudo-random one based on CYCLES and compile date.
*/
static inline void bfin_gen_rand_mac(uchar *mac_addr)
{
/* make something up */
const char s[] = __DATE__;
size_t i;
u32 cycles;
for (i = 0; i < 6; ++i) {
asm("%0 = CYCLES;" : "=r" (cycles));
mac_addr[i] = cycles ^ s[i];
}
mac_addr[0] = (mac_addr[0] | 0x02) & ~0x01; /* make it local unicast */
}
#endif