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
235 lines
5.4 KiB
235 lines
5.4 KiB
/*
|
|
* (C) Copyright 2002 Wolfgang Grandegger <wg@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>
|
|
#include <mpc824x.h>
|
|
#include <asm/io.h>
|
|
#include <pci.h>
|
|
|
|
#include "pn62.h"
|
|
|
|
typedef struct {
|
|
pci_dev_t devno;
|
|
volatile u32 *csr;
|
|
|
|
} i2155x_t;
|
|
|
|
static i2155x_t i2155x = { 0, NULL };
|
|
|
|
static struct pci_device_id i2155x_ids[] = {
|
|
{ 0x1011, 0x0046 }, /* i21554 */
|
|
{ 0x8086, 0xb555 } /* i21555 */
|
|
};
|
|
|
|
int i2155x_init(void)
|
|
{
|
|
pci_dev_t devno;
|
|
u32 val;
|
|
int i;
|
|
|
|
/*
|
|
* Find the Intel bridge.
|
|
*/
|
|
if ((devno = pci_find_devices(i2155x_ids, 0)) < 0) {
|
|
printf("Error: Intel bridge 2155x not found!\n");
|
|
return -1;
|
|
}
|
|
i2155x.devno = devno;
|
|
|
|
/*
|
|
* Get auto-configured base address for CSR access.
|
|
*/
|
|
pci_read_config_dword(devno, PCI_BASE_ADDRESS_1, &val);
|
|
if (val & PCI_BASE_ADDRESS_SPACE_IO) {
|
|
val &= PCI_BASE_ADDRESS_IO_MASK;
|
|
i2155x.csr = (volatile u32 *)(_IO_BASE + val);
|
|
} else {
|
|
val &= PCI_BASE_ADDRESS_MEM_MASK;
|
|
i2155x.csr = (volatile u32 *)val;
|
|
}
|
|
|
|
/*
|
|
* Translate downstream memory 2 (bar3) to base of shared memory.
|
|
*/
|
|
i2155x_set_bar_base(3, PN62_SMEM_DEFAULT);
|
|
|
|
/*
|
|
* Enable memory space, I/O space and bus master bits
|
|
* in both Primary and Secondary command registers.
|
|
*/
|
|
val = PCI_COMMAND_MEMORY|PCI_COMMAND_MASTER|PCI_COMMAND_IO;
|
|
pci_write_config_word(devno, 0x44, val);
|
|
pci_write_config_word(devno, 0x04, val);
|
|
|
|
/*
|
|
* Clear scratchpad registers.
|
|
*/
|
|
for (i = 0; i < (I2155X_SCRAPAD_MAX - 1); i++) {
|
|
i2155x_write_scrapad(i, 0x0);
|
|
}
|
|
|
|
/*
|
|
* Set interrupt line for Linux.
|
|
*/
|
|
pci_write_config_byte(devno, PCI_INTERRUPT_LINE, 3);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Access the Scratchpad registers 0..7 of the Intel bridge.
|
|
*/
|
|
void i2155x_write_scrapad(int idx, u32 val)
|
|
{
|
|
if (idx >= 0 && idx < I2155X_SCRAPAD_MAX)
|
|
out_le32(i2155x.csr + (I2155X_SCRAPAD_ADDR/4) + idx, val);
|
|
else
|
|
printf("i2155x_write_scrapad: invalid index\n");
|
|
}
|
|
|
|
u32 i2155x_read_scrapad(int idx)
|
|
{
|
|
if (idx >= 0 && idx < I2155X_SCRAPAD_MAX)
|
|
return in_le32(i2155x.csr + (I2155X_SCRAPAD_ADDR/4) + idx);
|
|
else
|
|
printf("i2155x_read_scrapad: invalid index\n");
|
|
return -1;
|
|
}
|
|
|
|
void i2155x_set_bar_base(int bar, u32 base)
|
|
{
|
|
if (bar >= 2 && bar <= 4) {
|
|
pci_write_config_dword(i2155x.devno,
|
|
I2155X_BAR2_BASE + (bar - 2) * 4,
|
|
base);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Read Vital Product Data (VPD) from the Serial EPROM attached
|
|
* to the Intel bridge.
|
|
*/
|
|
int i2155x_read_vpd(int offset, int size, unsigned char *data)
|
|
{
|
|
int i, n;
|
|
u16 val16;
|
|
|
|
for (i = 0; i < size; i++) {
|
|
pci_write_config_word(i2155x.devno, I2155X_VPD_ADDR,
|
|
offset + i - I2155X_VPD_START);
|
|
for (n = 10000; n > 0; n--) {
|
|
pci_read_config_word(i2155x.devno, I2155X_VPD_ADDR, &val16);
|
|
if ((val16 & 0x8000) != 0) /* wait for completion */
|
|
break;
|
|
udelay(100);
|
|
}
|
|
if (n == 0) {
|
|
printf("i2155x_read_vpd: TIMEOUT\n");
|
|
return -1;
|
|
}
|
|
|
|
pci_read_config_byte(i2155x.devno, I2155X_VPD_DATA, &data[i]);
|
|
}
|
|
|
|
return i;
|
|
}
|
|
|
|
static struct pci_device_id am79c95x_ids [] = {
|
|
{ PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LANCE },
|
|
{ }
|
|
};
|
|
|
|
|
|
/*
|
|
* Initialize the AMD ethernet controllers.
|
|
*/
|
|
int am79c95x_init(void)
|
|
{
|
|
pci_dev_t devno;
|
|
int i;
|
|
|
|
/*
|
|
* Set interrupt line for Linux.
|
|
*/
|
|
for (i = 0; i < 2; i++) {
|
|
if ((devno = pci_find_devices(am79c95x_ids, i)) < 0)
|
|
break;
|
|
pci_write_config_byte(devno, PCI_INTERRUPT_LINE, 2+i);
|
|
}
|
|
if (i < 2)
|
|
printf("Error: Only %d AMD Ethernet Controller found!\n", i);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
void set_led(unsigned int number, unsigned int function)
|
|
{
|
|
volatile u8 *addr;
|
|
|
|
if ((number >= 0) && (number < PN62_LED_MAX) &&
|
|
(function >= 0) && (function <= LED_LAST_FUNCTION)) {
|
|
addr = (volatile u8 *)(PN62_LED_BASE + number * 8);
|
|
out_8(addr, function&0xff);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Show fatal error indicated by Kinght Rider(tm) effect
|
|
* in LEDS 0-7. LEDS 8-11 contain 4 bit error code.
|
|
* Note: this function will not terminate.
|
|
*/
|
|
void fatal_error(unsigned int error_code)
|
|
{
|
|
int i, d;
|
|
|
|
for (i = 0; i < 12; i++) {
|
|
set_led(i, LED_0);
|
|
}
|
|
|
|
/*
|
|
* Write error code.
|
|
*/
|
|
set_led(8, (error_code & 0x01) ? LED_1 : LED_0);
|
|
set_led(9, (error_code & 0x02) ? LED_1 : LED_0);
|
|
set_led(10, (error_code & 0x04) ? LED_1 : LED_0);
|
|
set_led(11, (error_code & 0x08) ? LED_1 : LED_0);
|
|
|
|
/*
|
|
* Yay - Knight Rider effect!
|
|
*/
|
|
while(1) {
|
|
unsigned int delay = 2000;
|
|
|
|
for (i = 0; i < 8; i++) {
|
|
set_led(i, LED_1);
|
|
for (d = 0; d < delay; d++);
|
|
set_led(i, LED_0);
|
|
}
|
|
|
|
for (i = 7; i > 0; i--) {
|
|
set_led(i, LED_1);
|
|
for (d = 0; d < delay; d++);
|
|
set_led(i, LED_0);
|
|
}
|
|
}
|
|
}
|
|
|