upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
68 lines
1.2 KiB
68 lines
1.2 KiB
/*
|
|
* Based on LiMon - BOOTP.
|
|
*
|
|
* Copyright 1994, 1995, 2000 Neil Russell.
|
|
* (See License)
|
|
* Copyright 2000 Roland Borde
|
|
* Copyright 2000 Paolo Scaffardi
|
|
* Copyright 2000-2004 Wolfgang Denk, wd@denx.de
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <net.h>
|
|
#include "net_rand.h"
|
|
|
|
static ulong seed1, seed2;
|
|
|
|
void srand_mac(void)
|
|
{
|
|
ulong tst1, tst2, m_mask;
|
|
ulong m_value = 0;
|
|
int reg;
|
|
unsigned char bi_enetaddr[6];
|
|
|
|
/* get our mac */
|
|
eth_getenv_enetaddr("ethaddr", bi_enetaddr);
|
|
|
|
debug("BootpRequest => Our Mac: ");
|
|
for (reg = 0; reg < 6; reg++)
|
|
debug("%x%c", bi_enetaddr[reg], reg == 5 ? '\n' : ':');
|
|
|
|
/* Mac-Manipulation 2 get seed1 */
|
|
tst1 = 0;
|
|
tst2 = 0;
|
|
for (reg = 2; reg < 6; reg++) {
|
|
tst1 = tst1 << 8;
|
|
tst1 = tst1 | bi_enetaddr[reg];
|
|
}
|
|
for (reg = 0; reg < 2; reg++) {
|
|
tst2 = tst2 | bi_enetaddr[reg];
|
|
tst2 = tst2 << 8;
|
|
}
|
|
|
|
seed1 = tst1^tst2;
|
|
|
|
/* Mirror seed1*/
|
|
m_mask = 0x1;
|
|
for (reg = 1; reg <= 32; reg++) {
|
|
m_value |= (m_mask & seed1);
|
|
seed1 = seed1 >> 1;
|
|
m_value = m_value << 1;
|
|
}
|
|
seed1 = m_value;
|
|
seed2 = 0xb78d0945;
|
|
}
|
|
|
|
unsigned long rand(void)
|
|
{
|
|
ulong sum;
|
|
|
|
/* Random Number Generator */
|
|
sum = seed1 + seed2;
|
|
if (sum < seed1 || sum < seed2)
|
|
sum++;
|
|
seed2 = seed1;
|
|
seed1 = sum;
|
|
|
|
return sum;
|
|
}
|
|
|