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.
143 lines
2.0 KiB
143 lines
2.0 KiB
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* (c) 2007 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
|
|
*/
|
|
#include <common.h>
|
|
#include "ax88796.h"
|
|
|
|
/*
|
|
* Set 1 bit data
|
|
*/
|
|
static void ax88796_bitset(u32 bit)
|
|
{
|
|
/* DATA1 */
|
|
if( bit )
|
|
EEDI_HIGH;
|
|
else
|
|
EEDI_LOW;
|
|
|
|
EECLK_LOW;
|
|
udelay(1000);
|
|
EECLK_HIGH;
|
|
udelay(1000);
|
|
EEDI_LOW;
|
|
}
|
|
|
|
/*
|
|
* Get 1 bit data
|
|
*/
|
|
static u8 ax88796_bitget(void)
|
|
{
|
|
u8 bit;
|
|
|
|
EECLK_LOW;
|
|
udelay(1000);
|
|
/* DATA */
|
|
bit = EEDO;
|
|
EECLK_HIGH;
|
|
udelay(1000);
|
|
|
|
return bit;
|
|
}
|
|
|
|
/*
|
|
* Send COMMAND to EEPROM
|
|
*/
|
|
static void ax88796_eep_cmd(u8 cmd)
|
|
{
|
|
ax88796_bitset(BIT_DUMMY);
|
|
switch(cmd){
|
|
case MAC_EEP_READ:
|
|
ax88796_bitset(1);
|
|
ax88796_bitset(1);
|
|
ax88796_bitset(0);
|
|
break;
|
|
|
|
case MAC_EEP_WRITE:
|
|
ax88796_bitset(1);
|
|
ax88796_bitset(0);
|
|
ax88796_bitset(1);
|
|
break;
|
|
|
|
case MAC_EEP_ERACE:
|
|
ax88796_bitset(1);
|
|
ax88796_bitset(1);
|
|
ax88796_bitset(1);
|
|
break;
|
|
|
|
case MAC_EEP_EWEN:
|
|
ax88796_bitset(1);
|
|
ax88796_bitset(0);
|
|
ax88796_bitset(0);
|
|
break;
|
|
|
|
case MAC_EEP_EWDS:
|
|
ax88796_bitset(1);
|
|
ax88796_bitset(0);
|
|
ax88796_bitset(0);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void ax88796_eep_setaddr(u16 addr)
|
|
{
|
|
int i ;
|
|
|
|
for( i = 7 ; i >= 0 ; i-- )
|
|
ax88796_bitset(addr & (1 << i));
|
|
}
|
|
|
|
/*
|
|
* Get data from EEPROM
|
|
*/
|
|
static u16 ax88796_eep_getdata(void)
|
|
{
|
|
ushort data = 0;
|
|
int i;
|
|
|
|
ax88796_bitget(); /* DUMMY */
|
|
for( i = 0 ; i < 16 ; i++ ){
|
|
data <<= 1;
|
|
data |= ax88796_bitget();
|
|
}
|
|
return data;
|
|
}
|
|
|
|
static void ax88796_mac_read(u8 *buff)
|
|
{
|
|
int i ;
|
|
u16 data;
|
|
u16 addr = 0;
|
|
|
|
for( i = 0 ; i < 3; i++ )
|
|
{
|
|
EECS_HIGH;
|
|
EEDI_LOW;
|
|
udelay(1000);
|
|
/* READ COMMAND */
|
|
ax88796_eep_cmd(MAC_EEP_READ);
|
|
/* ADDRESS */
|
|
ax88796_eep_setaddr(addr++);
|
|
/* GET DATA */
|
|
data = ax88796_eep_getdata();
|
|
*buff++ = (uchar)(data & 0xff);
|
|
*buff++ = (uchar)((data >> 8) & 0xff);
|
|
EECLK_LOW;
|
|
EEDI_LOW;
|
|
EECS_LOW;
|
|
}
|
|
}
|
|
|
|
int get_prom(u8* mac_addr, u8* base_addr)
|
|
{
|
|
u8 prom[32];
|
|
int i;
|
|
|
|
ax88796_mac_read(prom);
|
|
for (i = 0; i < 6; i++){
|
|
mac_addr[i] = prom[i];
|
|
}
|
|
return 1;
|
|
}
|
|
|