u-boot/board/keymile/common/common.c
Heiko Schocher 67fa8c25f5 arm: add support for the suen3 board from keymile
Add support for the ARM part of the mgcoge2, named suen3.
This board is based on the Marvell Kirkwood (88F6281) SoC.
As there come more board variants, common config options
are collected in include/configs/km_arm.h. Also, this board
use common code for all keymile boards, which is stored in
board/keymile/common/common.c

Signed-off-by: Holger Brunck <holger.brunck@keymile.com>
Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Heiko Schocher <hs@denx.de>
2010-03-07 12:36:36 -06:00

597 lines
14 KiB
C

/*
* (C) Copyright 2008
* Heiko Schocher, DENX Software Engineering, hs@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#if defined(CONFIG_MGCOGE)
#include <mpc8260.h>
#endif
#include <ioports.h>
#include <malloc.h>
#include <hush.h>
#include <net.h>
#include <asm/io.h>
#if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT)
#include <libfdt.h>
#endif
#include "../common/common.h"
#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
#include <i2c.h>
extern int i2c_soft_read_pin (void);
int ivm_calc_crc (unsigned char *buf, int len)
{
const unsigned short crc_tab[16] = {
0x0000, 0xCC01, 0xD801, 0x1400,
0xF001, 0x3C00, 0x2800, 0xE401,
0xA001, 0x6C00, 0x7800, 0xB401,
0x5000, 0x9C01, 0x8801, 0x4400};
unsigned short crc = 0; /* final result */
unsigned short r1 = 0; /* temp */
unsigned char byte = 0; /* input buffer */
int i;
/* calculate CRC from array data */
for (i = 0; i < len; i++) {
byte = buf[i];
/* lower 4 bits */
r1 = crc_tab[crc & 0xF];
crc = ((crc) >> 4) & 0x0FFF;
crc = crc ^ r1 ^ crc_tab[byte & 0xF];
/* upper 4 bits */
r1 = crc_tab[crc & 0xF];
crc = (crc >> 4) & 0x0FFF;
crc = crc ^ r1 ^ crc_tab[(byte >> 4) & 0xF];
}
return crc;
}
static int ivm_set_value (char *name, char *value)
{
char tempbuf[256];
if (value != NULL) {
sprintf (tempbuf, "%s=%s", name, value);
return set_local_var (tempbuf, 0);
} else {
unset_local_var (name);
}
return 0;
}
static int ivm_get_value (unsigned char *buf, int len, char *name, int off,
int check)
{
unsigned short val;
unsigned char valbuf[30];
if ((buf[off + 0] != buf[off + 2]) &&
(buf[off + 2] != buf[off + 4])) {
printf ("%s Error corrupted %s\n", __FUNCTION__, name);
val = -1;
} else {
val = buf[off + 0] + (buf[off + 1] << 8);
if ((val == 0) && (check == 1))
val = -1;
}
sprintf ((char *)valbuf, "%x", val);
ivm_set_value (name, (char *)valbuf);
return val;
}
#define INVENTORYBLOCKSIZE 0x100
#define INVENTORYDATAADDRESS 0x21
#define INVENTORYDATASIZE (INVENTORYBLOCKSIZE - INVENTORYDATAADDRESS - 3)
#define IVM_POS_SHORT_TEXT 0
#define IVM_POS_MANU_ID 1
#define IVM_POS_MANU_SERIAL 2
#define IVM_POS_PART_NUMBER 3
#define IVM_POS_BUILD_STATE 4
#define IVM_POS_SUPPLIER_PART_NUMBER 5
#define IVM_POS_DELIVERY_DATE 6
#define IVM_POS_SUPPLIER_BUILD_STATE 7
#define IVM_POS_CUSTOMER_ID 8
#define IVM_POS_CUSTOMER_PROD_ID 9
#define IVM_POS_HISTORY 10
#define IVM_POS_SYMBOL_ONLY 11
static char convert_char (char c)
{
return (c < ' ' || c > '~') ? '.' : c;
}
static int ivm_findinventorystring (int type,
unsigned char* const string,
unsigned long maxlen,
unsigned char *buf)
{
int xcode = 0;
unsigned long cr = 0;
unsigned long addr = INVENTORYDATAADDRESS;
unsigned long size = 0;
unsigned long nr = type;
int stop = 0; /* stop on semicolon */
memset(string, '\0', maxlen);
switch (type) {
case IVM_POS_SYMBOL_ONLY:
nr = 0;
stop= 1;
break;
default:
nr = type;
stop = 0;
}
/* Look for the requested number of CR. */
while ((cr != nr) && (addr < INVENTORYDATASIZE)) {
if ((buf[addr] == '\r')) {
cr++;
}
addr++;
}
/* the expected number of CR was found until the end of the IVM
* content --> fill string */
if (addr < INVENTORYDATASIZE) {
/* Copy the IVM string in the corresponding string */
for (; (buf[addr] != '\r') &&
((buf[addr] != ';') || (!stop)) &&
(size < (maxlen - 1) &&
(addr < INVENTORYDATASIZE)); addr++)
{
size += sprintf((char *)string + size, "%c",
convert_char (buf[addr]));
}
/* copy phase is done: check if everything is ok. If not,
* the inventory data is most probably corrupted: tell
* the world there is a problem! */
if (addr == INVENTORYDATASIZE) {
xcode = -1;
printf ("Error end of string not found\n");
} else if ((size >= (maxlen - 1)) &&
(buf[addr] != '\r')) {
xcode = -1;
printf ("string too long till next CR\n");
}
} else {
/* some CR are missing...
* the inventory data is most probably corrupted */
xcode = -1;
printf ("not enough cr found\n");
}
return xcode;
}
#define GET_STRING(name, which, len) \
if (ivm_findinventorystring (which, valbuf, len, buf) == 0) { \
ivm_set_value (name, (char *)valbuf); \
}
static int ivm_check_crc (unsigned char *buf, int block)
{
unsigned long crc;
unsigned long crceeprom;
crc = ivm_calc_crc (buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN - 2);
crceeprom = (buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN - 1] + \
buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN - 2] * 256);
if (crc != crceeprom) {
if (block == 0)
printf ("Error CRC Block: %d EEprom: calculated: \
%lx EEprom: %lx\n", block, crc, crceeprom);
return -1;
}
return 0;
}
static int ivm_analyze_block2 (unsigned char *buf, int len)
{
unsigned char valbuf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN];
unsigned long count;
/* IVM_MacAddress */
sprintf ((char *)valbuf, "%02X:%02X:%02X:%02X:%02X:%02X",
buf[1],
buf[2],
buf[3],
buf[4],
buf[5],
buf[6]);
ivm_set_value ("IVM_MacAddress", (char *)valbuf);
if (getenv ("ethaddr") == NULL)
setenv ((char *)"ethaddr", (char *)valbuf);
/* IVM_MacCount */
count = (buf[10] << 24) +
(buf[11] << 16) +
(buf[12] << 8) +
buf[13];
if (count == 0xffffffff)
count = 1;
sprintf ((char *)valbuf, "%lx", count);
ivm_set_value ("IVM_MacCount", (char *)valbuf);
return 0;
}
int ivm_analyze_eeprom (unsigned char *buf, int len)
{
unsigned short val;
unsigned char valbuf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN];
unsigned char *tmp;
if (ivm_check_crc (buf, 0) != 0)
return -1;
ivm_get_value (buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN, "IVM_BoardId", 0, 1);
val = ivm_get_value (buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN, "IVM_HWKey", 6, 1);
if (val != 0xffff) {
sprintf ((char *)valbuf, "%x", ((val /100) % 10));
ivm_set_value ("IVM_HWVariant", (char *)valbuf);
sprintf ((char *)valbuf, "%x", (val % 100));
ivm_set_value ("IVM_HWVersion", (char *)valbuf);
}
ivm_get_value (buf, CONFIG_SYS_IVM_EEPROM_PAGE_LEN, "IVM_Functions", 12, 0);
GET_STRING("IVM_Symbol", IVM_POS_SYMBOL_ONLY, 8)
GET_STRING("IVM_DeviceName", IVM_POS_SHORT_TEXT, 64)
tmp = (unsigned char *) getenv("IVM_DeviceName");
if (tmp) {
int len = strlen ((char *)tmp);
int i = 0;
while (i < len) {
if (tmp[i] == ';') {
ivm_set_value ("IVM_ShortText", (char *)&tmp[i + 1]);
break;
}
i++;
}
if (i >= len)
ivm_set_value ("IVM_ShortText", NULL);
} else {
ivm_set_value ("IVM_ShortText", NULL);
}
GET_STRING("IVM_ManufacturerID", IVM_POS_MANU_ID, 32)
GET_STRING("IVM_ManufacturerSerialNumber", IVM_POS_MANU_SERIAL, 20)
GET_STRING("IVM_ManufacturerPartNumber", IVM_POS_PART_NUMBER, 32)
GET_STRING("IVM_ManufacturerBuildState", IVM_POS_BUILD_STATE, 32)
GET_STRING("IVM_SupplierPartNumber", IVM_POS_SUPPLIER_PART_NUMBER, 32)
GET_STRING("IVM_DelieveryDate", IVM_POS_DELIVERY_DATE, 32)
GET_STRING("IVM_SupplierBuildState", IVM_POS_SUPPLIER_BUILD_STATE, 32)
GET_STRING("IVM_CustomerID", IVM_POS_CUSTOMER_ID, 32)
GET_STRING("IVM_CustomerProductID", IVM_POS_CUSTOMER_PROD_ID, 32)
if (ivm_check_crc (&buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN * 2], 2) != 0)
return 0;
ivm_analyze_block2 (&buf[CONFIG_SYS_IVM_EEPROM_PAGE_LEN * 2], CONFIG_SYS_IVM_EEPROM_PAGE_LEN);
return 0;
}
int ivm_read_eeprom (void)
{
#if defined(CONFIG_I2C_MUX)
I2C_MUX_DEVICE *dev = NULL;
#endif
uchar i2c_buffer[CONFIG_SYS_IVM_EEPROM_MAX_LEN];
uchar *buf;
unsigned dev_addr = CONFIG_SYS_IVM_EEPROM_ADR;
#if defined(CONFIG_I2C_MUX)
/* First init the Bus, select the Bus */
#if defined(CONFIG_SYS_I2C_IVM_BUS)
dev = i2c_mux_ident_muxstring ((uchar *)CONFIG_SYS_I2C_IVM_BUS);
#else
buf = (unsigned char *) getenv ("EEprom_ivm");
if (buf != NULL)
dev = i2c_mux_ident_muxstring (buf);
#endif
if (dev == NULL) {
printf ("Error couldnt add Bus for IVM\n");
return -1;
}
i2c_set_bus_num (dev->busid);
#endif
buf = (unsigned char *) getenv ("EEprom_ivm_addr");
if (buf != NULL)
dev_addr = simple_strtoul ((char *)buf, NULL, 16);
if (i2c_read(dev_addr, 0, 1, i2c_buffer, CONFIG_SYS_IVM_EEPROM_MAX_LEN) != 0) {
printf ("Error reading EEprom\n");
return -2;
}
return ivm_analyze_eeprom (i2c_buffer, CONFIG_SYS_IVM_EEPROM_MAX_LEN);
}
#if defined(CONFIG_SYS_I2C_INIT_BOARD)
#define DELAY_ABORT_SEQ 62
#define DELAY_HALF_PERIOD (500 / (CONFIG_SYS_I2C_SPEED / 1000))
#if defined(CONFIG_MGCOGE)
#define SDA_MASK 0x00010000
#define SCL_MASK 0x00020000
static void set_pin (int state, unsigned long mask)
{
volatile ioport_t *iop = ioport_addr ((immap_t *)CONFIG_SYS_IMMR, 3);
if (state)
iop->pdat |= (mask);
else
iop->pdat &= ~(mask);
iop->pdir |= (mask);
}
static int get_pin (unsigned long mask)
{
volatile ioport_t *iop = ioport_addr ((immap_t *)CONFIG_SYS_IMMR, 3);
iop->pdir &= ~(mask);
return (0 != (iop->pdat & (mask)));
}
static void set_sda (int state)
{
set_pin (state, SDA_MASK);
}
static void set_scl (int state)
{
set_pin (state, SCL_MASK);
}
static int get_sda (void)
{
return get_pin (SDA_MASK);
}
static int get_scl (void)
{
return get_pin (SCL_MASK);
}
#if defined(CONFIG_HARD_I2C)
static void setports (int gpio)
{
volatile ioport_t *iop = ioport_addr ((immap_t *)CONFIG_SYS_IMMR, 3);
if (gpio) {
iop->ppar &= ~(SDA_MASK | SCL_MASK);
iop->podr &= ~(SDA_MASK | SCL_MASK);
} else {
iop->ppar |= (SDA_MASK | SCL_MASK);
iop->pdir &= ~(SDA_MASK | SCL_MASK);
iop->podr |= (SDA_MASK | SCL_MASK);
}
}
#endif
#endif
#if defined(CONFIG_KM8XX)
static void set_sda (int state)
{
I2C_SDA(state);
}
static void set_scl (int state)
{
I2C_SCL(state);
}
static int get_sda (void)
{
return I2C_READ;
}
static int get_scl (void)
{
int val;
*(unsigned short *)(I2C_BASE_DIR) &= ~SCL_CONF;
udelay (1);
val = *(unsigned char *)(I2C_BASE_PORT);
return ((val & SCL_BIT) == SCL_BIT);
}
#endif
#if !defined(CONFIG_KMETER1)
static void writeStartSeq (void)
{
set_sda (1);
udelay (DELAY_HALF_PERIOD);
set_scl (1);
udelay (DELAY_HALF_PERIOD);
set_sda (0);
udelay (DELAY_HALF_PERIOD);
set_scl (0);
udelay (DELAY_HALF_PERIOD);
}
/* I2C is a synchronous protocol and resets of the processor in the middle
of an access can block the I2C Bus until a powerdown of the full unit is
done. This function toggles the SCL until the SCL and SCA line are
released, but max. 16 times, after this a I2C start-sequence is sent.
This I2C Deblocking mechanism was developed by Keymile in association
with Anatech and Atmel in 1998.
*/
static int i2c_make_abort (void)
{
int scl_state = 0;
int sda_state = 0;
int i = 0;
int ret = 0;
if (!get_sda ()) {
ret = -1;
while (i < 16) {
i++;
set_scl (0);
udelay (DELAY_ABORT_SEQ);
set_scl (1);
udelay (DELAY_ABORT_SEQ);
scl_state = get_scl ();
sda_state = get_sda ();
if (scl_state && sda_state) {
ret = 0;
break;
}
}
}
if (ret == 0) {
for (i =0; i < 5; i++) {
writeStartSeq ();
}
}
get_sda ();
return ret;
}
#endif
/**
* i2c_init_board - reset i2c bus. When the board is powercycled during a
* bus transfer it might hang; for details see doc/I2C_Edge_Conditions.
*/
void i2c_init_board(void)
{
#if defined(CONFIG_KMETER1)
struct fsl_i2c *dev;
dev = (struct fsl_i2c *) (CONFIG_SYS_IMMR + CONFIG_SYS_I2C_OFFSET);
uchar dummy;
out_8 (&dev->cr, (I2C_CR_MSTA));
out_8 (&dev->cr, (I2C_CR_MEN | I2C_CR_MSTA));
dummy = in_8(&dev->dr);
dummy = in_8(&dev->dr);
if (dummy != 0xff) {
dummy = in_8(&dev->dr);
}
out_8 (&dev->cr, (I2C_CR_MEN));
out_8 (&dev->cr, 0x00);
out_8 (&dev->cr, (I2C_CR_MEN));
#else
#if defined(CONFIG_HARD_I2C) && !defined(CONFIG_MACH_SUEN3)
volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR ;
volatile i2c8260_t *i2c = (i2c8260_t *)&immap->im_i2c;
/* disable I2C controller first, otherwhise it thinks we want to */
/* talk to the slave port... */
i2c->i2c_i2mod &= ~0x01;
/* Set the PortPins to GPIO */
setports (1);
#endif
/* Now run the AbortSequence() */
i2c_make_abort ();
#if defined(CONFIG_HARD_I2C)
/* Set the PortPins back to use for I2C */
setports (0);
#endif
#endif
}
#endif
#endif
#if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT)
int fdt_set_node_and_value (void *blob,
char *nodename,
char *regname,
void *var,
int size)
{
int ret = 0;
int nodeoffset = 0;
nodeoffset = fdt_path_offset (blob, nodename);
if (nodeoffset >= 0) {
ret = fdt_setprop (blob, nodeoffset, regname, var,
size);
if (ret < 0)
printf("ft_blob_update(): cannot set %s/%s "
"property err:%s\n", nodename, regname,
fdt_strerror (ret));
} else {
printf("ft_blob_update(): cannot find %s node "
"err:%s\n", nodename, fdt_strerror (nodeoffset));
}
return ret;
}
int fdt_get_node_and_value (void *blob,
char *nodename,
char *propname,
void **var)
{
int len;
int nodeoffset = 0;
nodeoffset = fdt_path_offset (blob, nodename);
if (nodeoffset >= 0) {
*var = (void *)fdt_getprop (blob, nodeoffset, propname, &len);
if (len == 0) {
/* no value */
printf ("%s no value\n", __FUNCTION__);
return -1;
} else if (len > 0) {
return len;
} else {
printf ("libfdt fdt_getprop(): %s\n",
fdt_strerror(len));
return -2;
}
} else {
printf("%s: cannot find %s node err:%s\n", __FUNCTION__,
nodename, fdt_strerror (nodeoffset));
return -3;
}
}
#endif
#if !defined(CONFIG_MACH_SUEN3)
int ethernet_present (void)
{
return (in_8((u8 *)CONFIG_SYS_PIGGY_BASE + CONFIG_SYS_SLOT_ID_OFF) & 0x80);
}
#endif
int board_eth_init (bd_t *bis)
{
#ifdef CONFIG_KEYMILE_HDLC_ENET
(void)keymile_hdlc_enet_initialize (bis);
#endif
if (ethernet_present ()) {
return -1;
}
return 0;
}