358 lines
8.2 KiB
C
358 lines
8.2 KiB
C
|
|
/*
|
|
* Copyright 1998-2001 by Donald Becker.
|
|
* This software may be used and distributed according to the terms of
|
|
* the GNU General Public License (GPL), incorporated herein by reference.
|
|
* Contact the author for use under other terms.
|
|
*
|
|
* This program must be compiled with "-O"!
|
|
* See the bottom of this file for the suggested compile-command.
|
|
*
|
|
* The author may be reached as becker@scyld.com, or C/O
|
|
* Scyld Computing Corporation
|
|
* 410 Severn Ave., Suite 210
|
|
* Annapolis MD 21403
|
|
*
|
|
* Common-sense licensing statement: Using any portion of this program in
|
|
* your own program means that you must give credit to the original author
|
|
* and release the resulting code under the GPL.
|
|
*/
|
|
|
|
#define _PPC_STRING_H_ /* avoid unnecessary str/mem functions */
|
|
|
|
#include <common.h>
|
|
#include <exports.h>
|
|
#include <asm/io.h>
|
|
|
|
|
|
/* Default EEPROM for i82559 */
|
|
static unsigned short default_eeprom[64] = {
|
|
0x0100, 0x0302, 0x0504, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
|
|
0xffff, 0xffff, 0x40c0, 0x0000, 0x0000, 0xffff, 0xffff, 0xffff,
|
|
0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
|
|
0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
|
|
0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
|
|
0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
|
|
0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
|
|
0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff
|
|
};
|
|
|
|
static unsigned short eeprom[256];
|
|
|
|
static int eeprom_size = 64;
|
|
static int eeprom_addr_size = 6;
|
|
|
|
static int debug = 0;
|
|
|
|
static inline unsigned short swap16(unsigned short x)
|
|
{
|
|
return (((x & 0xff) << 8) | ((x & 0xff00) >> 8));
|
|
}
|
|
|
|
|
|
void * memcpy(void * dest,const void *src,size_t count)
|
|
{
|
|
char *tmp = (char *) dest, *s = (char *) src;
|
|
|
|
while (count--)
|
|
*tmp++ = *s++;
|
|
|
|
return dest;
|
|
}
|
|
|
|
|
|
/* The EEPROM commands include the alway-set leading bit. */
|
|
#define EE_WRITE_CMD (5)
|
|
#define EE_READ_CMD (6)
|
|
#define EE_ERASE_CMD (7)
|
|
|
|
/* Serial EEPROM section. */
|
|
#define EE_SHIFT_CLK 0x01 /* EEPROM shift clock. */
|
|
#define EE_CS 0x02 /* EEPROM chip select. */
|
|
#define EE_DATA_WRITE 0x04 /* EEPROM chip data in. */
|
|
#define EE_DATA_READ 0x08 /* EEPROM chip data out. */
|
|
#define EE_ENB (0x4800 | EE_CS)
|
|
#define EE_WRITE_0 0x4802
|
|
#define EE_WRITE_1 0x4806
|
|
#define EE_OFFSET 14
|
|
|
|
/* Delay between EEPROM clock transitions. */
|
|
#define eeprom_delay(ee_addr) inw(ee_addr)
|
|
|
|
/* Wait for the EEPROM to finish the previous operation. */
|
|
static int eeprom_busy_poll(long ee_ioaddr)
|
|
{
|
|
int i;
|
|
outw(EE_ENB, ee_ioaddr);
|
|
for (i = 0; i < 10000; i++) /* Typical 2000 ticks */
|
|
if (inw(ee_ioaddr) & EE_DATA_READ)
|
|
break;
|
|
return i;
|
|
}
|
|
|
|
/* This executes a generic EEPROM command, typically a write or write enable.
|
|
It returns the data output from the EEPROM, and thus may also be used for
|
|
reads. */
|
|
static int do_eeprom_cmd(long ioaddr, int cmd, int cmd_len)
|
|
{
|
|
unsigned retval = 0;
|
|
long ee_addr = ioaddr + EE_OFFSET;
|
|
|
|
if (debug > 1)
|
|
printf(" EEPROM op 0x%x: ", cmd);
|
|
|
|
outw(EE_ENB | EE_SHIFT_CLK, ee_addr);
|
|
|
|
/* Shift the command bits out. */
|
|
do {
|
|
short dataval = (cmd & (1 << cmd_len)) ? EE_WRITE_1 : EE_WRITE_0;
|
|
outw(dataval, ee_addr);
|
|
eeprom_delay(ee_addr);
|
|
if (debug > 2)
|
|
printf("%X", inw(ee_addr) & 15);
|
|
outw(dataval | EE_SHIFT_CLK, ee_addr);
|
|
eeprom_delay(ee_addr);
|
|
retval = (retval << 1) | ((inw(ee_addr) & EE_DATA_READ) ? 1 : 0);
|
|
} while (--cmd_len >= 0);
|
|
#if 0
|
|
outw(EE_ENB, ee_addr);
|
|
#endif
|
|
/* Terminate the EEPROM access. */
|
|
outw(EE_ENB & ~EE_CS, ee_addr);
|
|
if (debug > 1)
|
|
printf(" EEPROM result is 0x%5.5x.\n", retval);
|
|
return retval;
|
|
}
|
|
|
|
static int read_eeprom(long ioaddr, int location, int addr_len)
|
|
{
|
|
return do_eeprom_cmd(ioaddr, ((EE_READ_CMD << addr_len) | location)
|
|
<< 16 , 3 + addr_len + 16) & 0xffff;
|
|
}
|
|
|
|
static void write_eeprom(long ioaddr, int index, int value, int addr_len)
|
|
{
|
|
long ee_ioaddr = ioaddr + EE_OFFSET;
|
|
int i;
|
|
|
|
/* Poll for previous op finished. */
|
|
eeprom_busy_poll(ee_ioaddr); /* Typical 0 ticks */
|
|
/* Enable programming modes. */
|
|
do_eeprom_cmd(ioaddr, (0x4f << (addr_len-4)), 3 + addr_len);
|
|
/* Do the actual write. */
|
|
do_eeprom_cmd(ioaddr,
|
|
(((EE_WRITE_CMD<<addr_len) | index)<<16) | (value & 0xffff),
|
|
3 + addr_len + 16);
|
|
/* Poll for write finished. */
|
|
i = eeprom_busy_poll(ee_ioaddr); /* Typical 2000 ticks */
|
|
if (debug)
|
|
printf(" Write finished after %d ticks.\n", i);
|
|
/* Disable programming. This command is not instantaneous, so we check
|
|
for busy before the next op. */
|
|
do_eeprom_cmd(ioaddr, (0x40 << (addr_len-4)), 3 + addr_len);
|
|
eeprom_busy_poll(ee_ioaddr);
|
|
}
|
|
|
|
static int reset_eeprom(unsigned long ioaddr, unsigned char *hwaddr)
|
|
{
|
|
unsigned short checksum = 0;
|
|
int size_test;
|
|
int i;
|
|
|
|
printf("Resetting i82559 EEPROM @ 0x%08lx ... ", ioaddr);
|
|
|
|
size_test = do_eeprom_cmd(ioaddr, (EE_READ_CMD << 8) << 16, 27);
|
|
eeprom_addr_size = (size_test & 0xffe0000) == 0xffe0000 ? 8 : 6;
|
|
eeprom_size = 1 << eeprom_addr_size;
|
|
|
|
memcpy(eeprom, default_eeprom, sizeof default_eeprom);
|
|
|
|
for (i = 0; i < 3; i++)
|
|
eeprom[i] = (hwaddr[i*2+1]<<8) + hwaddr[i*2];
|
|
|
|
/* Recalculate the checksum. */
|
|
for (i = 0; i < eeprom_size - 1; i++)
|
|
checksum += eeprom[i];
|
|
eeprom[i] = 0xBABA - checksum;
|
|
|
|
for (i = 0; i < eeprom_size; i++)
|
|
write_eeprom(ioaddr, i, eeprom[i], eeprom_addr_size);
|
|
|
|
for (i = 0; i < eeprom_size; i++)
|
|
if (read_eeprom(ioaddr, i, eeprom_addr_size) != eeprom[i]) {
|
|
printf("failed\n");
|
|
return 1;
|
|
}
|
|
|
|
printf("done\n");
|
|
return 0;
|
|
}
|
|
|
|
static unsigned int hatoi(char *p, char **errp)
|
|
{
|
|
unsigned int res = 0;
|
|
|
|
while (1) {
|
|
switch (*p) {
|
|
case 'a':
|
|
case 'b':
|
|
case 'c':
|
|
case 'd':
|
|
case 'e':
|
|
case 'f':
|
|
res |= (*p - 'a' + 10);
|
|
break;
|
|
case 'A':
|
|
case 'B':
|
|
case 'C':
|
|
case 'D':
|
|
case 'E':
|
|
case 'F':
|
|
res |= (*p - 'A' + 10);
|
|
break;
|
|
case '0':
|
|
case '1':
|
|
case '2':
|
|
case '3':
|
|
case '4':
|
|
case '5':
|
|
case '6':
|
|
case '7':
|
|
case '8':
|
|
case '9':
|
|
res |= (*p - '0');
|
|
break;
|
|
default:
|
|
if (errp) {
|
|
*errp = p;
|
|
}
|
|
return res;
|
|
}
|
|
p++;
|
|
if (*p == 0) {
|
|
break;
|
|
}
|
|
res <<= 4;
|
|
}
|
|
|
|
if (errp) {
|
|
*errp = NULL;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static unsigned char *gethwaddr(char *in, unsigned char *out)
|
|
{
|
|
char tmp[3];
|
|
int i;
|
|
char *err;
|
|
|
|
for (i=0;i<6;i++) {
|
|
if (in[i*3+2] == 0 && i == 5) {
|
|
out[i] = hatoi(&in[i*3], &err);
|
|
if (err) {
|
|
return NULL;
|
|
}
|
|
} else if (in[i*3+2] == ':' && i < 5) {
|
|
tmp[0] = in[i*3];
|
|
tmp[1] = in[i*3+1];
|
|
tmp[2] = 0;
|
|
out[i] = hatoi(tmp, &err);
|
|
if (err) {
|
|
return NULL;
|
|
}
|
|
} else {
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
return out;
|
|
}
|
|
|
|
static u32
|
|
read_config_dword(int bus, int dev, int func, int reg)
|
|
{
|
|
u32 res;
|
|
|
|
outl(0x80000000|(bus&0xff)<<16|(dev&0x1f)<<11|(func&7)<<8|(reg&0xfc),
|
|
0xcf8);
|
|
res = inl(0xcfc);
|
|
outl(0, 0xcf8);
|
|
return res;
|
|
}
|
|
|
|
static u16
|
|
read_config_word(int bus, int dev, int func, int reg)
|
|
{
|
|
u32 res;
|
|
|
|
outl(0x80000000|(bus&0xff)<<16|(dev&0x1f)<<11|(func&7)<<8|(reg&0xfc),
|
|
0xcf8);
|
|
res = inw(0xcfc + (reg & 2));
|
|
outl(0, 0xcf8);
|
|
return res;
|
|
}
|
|
|
|
static void
|
|
write_config_word(int bus, int dev, int func, int reg, u16 data)
|
|
{
|
|
|
|
outl(0x80000000|(bus&0xff)<<16|(dev&0x1f)<<11|(func&7)<<8|(reg&0xfc),
|
|
0xcf8);
|
|
outw(data, 0xcfc + (reg & 2));
|
|
outl(0, 0xcf8);
|
|
}
|
|
|
|
|
|
int main (int argc, char *argv[])
|
|
{
|
|
unsigned char *eth_addr;
|
|
uchar buf[6];
|
|
int instance;
|
|
|
|
app_startup(argv);
|
|
if (argc != 2) {
|
|
printf ("call with base Ethernet address\n");
|
|
return 1;
|
|
}
|
|
|
|
|
|
eth_addr = gethwaddr(argv[1], buf);
|
|
if (NULL == eth_addr) {
|
|
printf ("Can not parse ethernet address\n");
|
|
return 1;
|
|
}
|
|
if (eth_addr[5] & 0x01) {
|
|
printf("Base Ethernet address must be even\n");
|
|
}
|
|
|
|
|
|
for (instance = 0; instance < 2; instance ++) {
|
|
unsigned int io_addr;
|
|
unsigned char mac[6];
|
|
int bar1 = read_config_dword(0, 6+instance, 0, 0x14);
|
|
if (! (bar1 & 1)) {
|
|
printf("ETH%d is disabled %x\n", instance, bar1);
|
|
} else {
|
|
printf("ETH%d IO=0x%04x\n", instance, bar1 & ~3);
|
|
}
|
|
io_addr = (bar1 & (~3L));
|
|
|
|
|
|
write_config_word(0, 6+instance, 0, 4,
|
|
read_config_word(0, 6+instance, 0, 4) | 1);
|
|
printf("ETH%d CMD %04x\n", instance,
|
|
read_config_word(0, 6+instance, 0, 4));
|
|
|
|
memcpy(mac, eth_addr, 6);
|
|
mac[5] += instance;
|
|
|
|
printf("got io=%04x, ha=%02x:%02x:%02x:%02x:%02x:%02x\n",
|
|
io_addr, mac[0], mac[1], mac[2],
|
|
mac[3], mac[4], mac[5]);
|
|
reset_eeprom(io_addr, mac);
|
|
}
|
|
return 0;
|
|
}
|