Commit 309a292e
deleted OXC board, but
missed to remove the standalone example specific to OXC board.
eepro100_eeprom.c has been an orphan file for a long term.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
master
parent
5f9cc8e638
commit
13b213b47d
@ -1,214 +0,0 @@ |
||||
/*
|
||||
* 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. |
||||
*/ |
||||
|
||||
/* avoid unnecessary memcpy function */ |
||||
#define _PPC_STRING_H_ |
||||
|
||||
#include <common.h> |
||||
#include <exports.h> |
||||
|
||||
static int reset_eeprom(unsigned long ioaddr, unsigned char *hwaddr); |
||||
|
||||
int eepro100_eeprom(int argc, char * const argv[]) |
||||
{ |
||||
int ret = 0; |
||||
|
||||
unsigned char hwaddr1[6] = { 0x00, 0x00, 0x02, 0x03, 0x04, 0x05 }; |
||||
unsigned char hwaddr2[6] = { 0x00, 0x00, 0x02, 0x03, 0x04, 0x06 }; |
||||
|
||||
app_startup(argv); |
||||
|
||||
#if defined(CONFIG_OXC) |
||||
ret |= reset_eeprom(0x80000000, hwaddr1); |
||||
ret |= reset_eeprom(0x81000000, hwaddr2); |
||||
#endif |
||||
|
||||
return ret; |
||||
} |
||||
|
||||
/* 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)); |
||||
} |
||||
|
||||
static inline void outw(short data, long addr) |
||||
{ |
||||
*(volatile short *)(addr) = swap16(data); |
||||
} |
||||
|
||||
static inline short inw(long addr) |
||||
{ |
||||
return swap16(*(volatile short *)(addr)); |
||||
} |
||||
|
||||
void *memcpy(void *dst, const void *src, unsigned int len) |
||||
{ |
||||
char *ret = dst; |
||||
while (len-- > 0) { |
||||
*ret++ = *((char *)src); |
||||
src++; |
||||
} |
||||
return (void *)ret; |
||||
} |
||||
|
||||
/* 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; |
||||
} |
Loading…
Reference in new issue