+++ /dev/null
-/*
- * 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 * const 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;
-}
projects / oweals / u-boot.git / commitdiff