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/*
* (C) Copyright 2001-2004
* Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/processor.h>
#include <command.h>
#include <malloc.h>
#include <pci.h>
#include <asm/4xx_pci.h>
#include <asm/io.h>
#include "pci405.h"
DECLARE_GLOBAL_DATA_PTR;
/* Prototypes */
unsigned long fpga_done_state(void);
unsigned long fpga_init_state(void);
#if 0
#define FPGA_DEBUG
#endif
/* predefine these here */
#define FPGA_DONE_STATE (fpga_done_state())
#define FPGA_INIT_STATE (fpga_init_state())
/* fpga configuration data - generated by bin2cc */
const unsigned char fpgadata[] =
{
#include "fpgadata.c"
};
/*
* include common fpga code (for esd boards)
*/
#include "../common/fpga.c"
#define FPGA_DONE_STATE_V11 (in_be32((void*)GPIO0_IR) & CONFIG_SYS_FPGA_DONE)
#define FPGA_DONE_STATE_V12 (in_be32((void*)GPIO0_IR) & CONFIG_SYS_FPGA_DONE_V12)
#define FPGA_INIT_STATE_V11 (in_be32((void*)GPIO0_IR) & CONFIG_SYS_FPGA_INIT)
#define FPGA_INIT_STATE_V12 (in_be32((void*)GPIO0_IR) & CONFIG_SYS_FPGA_INIT_V12)
int board_revision(void)
{
unsigned long CPC0_CR0Reg;
unsigned long value;
/*
* Get version of PCI405 board from GPIO's
*/
/*
* Setup GPIO pins (CS2/GPIO11 and CS3/GPIO12 as GPIO)
*/
CPC0_CR0Reg = mfdcr(CPC0_CR0);
mtdcr(CPC0_CR0, CPC0_CR0Reg | 0x03000000);
out_be32((void*)GPIO0_ODR, in_be32((void*)GPIO0_ODR) & ~0x00100200);
out_be32((void*)GPIO0_TCR, in_be32((void*)GPIO0_TCR) & ~0x00100200);
udelay(1000); /* wait some time before reading input */
value = in_be32((void*)GPIO0_IR) & 0x00100200; /* get config bits */
/*
* Restore GPIO settings
*/
mtdcr(CPC0_CR0, CPC0_CR0Reg);
switch (value) {
case 0x00100200:
/* CS2==1 && IRQ5==1 -> version 1.0 and 1.1 */
return 1;
case 0x00000200:
/* CS2==0 && IRQ5==1 -> version 1.2 */
return 2;
case 0x00000000:
/* CS2==0 && IRQ5==0 -> version 1.3 */
return 3;
#if 0 /* not yet manufactured ! */
case 0x00100000:
/* CS2==1 && IRQ5==0 -> version 1.4 */
return 4;
#endif
default:
/* should not be reached! */
return 0;
}
}
unsigned long fpga_done_state(void)
{
if (gd->board_type < 2) {
return FPGA_DONE_STATE_V11;
} else {
return FPGA_DONE_STATE_V12;
}
}
unsigned long fpga_init_state(void)
{
if (gd->board_type < 2) {
return FPGA_INIT_STATE_V11;
} else {
return FPGA_INIT_STATE_V12;
}
}
int board_early_init_f (void)
{
unsigned long CPC0_CR0Reg;
/*
* First pull fpga-prg pin low, to disable fpga logic (on version 1.2 board)
*/
out_be32((void*)GPIO0_ODR, 0x00000000); /* no open drain pins */
out_be32((void*)GPIO0_TCR, CONFIG_SYS_FPGA_PRG); /* setup for output */
out_be32((void*)GPIO0_OR, CONFIG_SYS_FPGA_PRG); /* set output pins to high */
out_be32((void*)GPIO0_OR, 0); /* pull prg low */
/*
* IRQ 0-15 405GP internally generated; active high; level sensitive
* IRQ 16 405GP internally generated; active low; level sensitive
* IRQ 17-24 RESERVED
* IRQ 25 (EXT IRQ 0) CAN0; active low; level sensitive
* IRQ 26 (EXT IRQ 1) CAN1; active low; level sensitive
* IRQ 27 (EXT IRQ 2) CAN2; active low; level sensitive
* IRQ 28 (EXT IRQ 3) CAN3; active low; level sensitive
* IRQ 29 (EXT IRQ 4) unused; active low; level sensitive
* IRQ 30 (EXT IRQ 5) FPGA Timestamp; active low; level sensitive
* IRQ 31 (EXT IRQ 6) PCI Reset; active low; level sensitive
*/
mtdcr(UIC0SR, 0xFFFFFFFF); /* clear all ints */
mtdcr(UIC0ER, 0x00000000); /* disable all ints */
mtdcr(UIC0CR, 0x00000000); /* set all to be non-critical*/
mtdcr(UIC0PR, 0xFFFFFF80); /* set int polarities */
mtdcr(UIC0TR, 0x10000000); /* set int trigger levels */
mtdcr(UIC0VCR, 0x00000001); /* set vect base=0,INT0 highest priority*/
mtdcr(UIC0SR, 0xFFFFFFFF); /* clear all ints */
/*
* Setup GPIO pins (IRQ4/GPIO21 as GPIO)
*/
CPC0_CR0Reg = mfdcr(CPC0_CR0);
mtdcr(CPC0_CR0, CPC0_CR0Reg | 0x00008000);
/*
* Setup GPIO pins (CS6+CS7 as GPIO)
*/
mtdcr(CPC0_CR0, CPC0_CR0Reg | 0x00300000);
/*
* EBC Configuration Register: set ready timeout to 512 ebc-clks -> ca. 25 us
*/
mtebc (EBC0_CFG, 0xa8400000); /* ebc always driven */
return 0;
}
int misc_init_r (void)
{
unsigned char *dst;
ulong len = sizeof(fpgadata);
int status;
int index;
int i;
unsigned int *ptr;
unsigned int *magic;
/*
* On PCI-405 the environment is saved in eeprom!
* FPGA can be gzip compressed (malloc) and booted this late.
*/
dst = malloc(CONFIG_SYS_FPGA_MAX_SIZE);
if (gunzip (dst, CONFIG_SYS_FPGA_MAX_SIZE, (uchar *)fpgadata, &len) != 0) {
printf ("GUNZIP ERROR - must RESET board to recover\n");
do_reset (NULL, 0, 0, NULL);
}
status = fpga_boot(dst, len);
if (status != 0) {
printf("\nFPGA: Booting failed ");
switch (status) {
case ERROR_FPGA_PRG_INIT_LOW:
printf("(Timeout: INIT not low after asserting PROGRAM*)\n ");
break;
case ERROR_FPGA_PRG_INIT_HIGH:
printf("(Timeout: INIT not high after deasserting PROGRAM*)\n ");
break;
case ERROR_FPGA_PRG_DONE:
printf("(Timeout: DONE not high after programming FPGA)\n ");
break;
}
/* display infos on fpgaimage */
index = 15;
for (i=0; i<4; i++) {
len = dst[index];
printf("FPGA: %s\n", &(dst[index+1]));
index += len+3;
}
putc ('\n');
/* delayed reboot */
for (i=20; i>0; i--) {
printf("Rebooting in %2d seconds \r",i);
for (index=0;index<1000;index++)
udelay(1000);
}
putc ('\n');
do_reset(NULL, 0, 0, NULL);
}
puts("FPGA: ");
/* display infos on fpgaimage */
index = 15;
for (i=0; i<4; i++) {
len = dst[index];
printf("%s ", &(dst[index+1]));
index += len+3;
}
putc ('\n');
/*
* Reset FPGA via FPGA_DATA pin
*/
SET_FPGA(FPGA_PRG | FPGA_CLK);
udelay(1000); /* wait 1ms */
SET_FPGA(FPGA_PRG | FPGA_CLK | FPGA_DATA);
udelay(1000); /* wait 1ms */
/*
* Check if magic for pci reconfig is written
*/
magic = (unsigned int *)0x00000004;
if (*magic == PCI_RECONFIG_MAGIC) {
/*
* Rewrite pci config regs (only after soft-reset with magic set)
*/
ptr = (unsigned int *)PCI_REGS_ADDR;
if (crc32(0, (uchar *)PCI_REGS_ADDR+4, PCI_REGS_LEN-4) == *ptr) {
puts("Restoring PCI Configurations Regs!\n");
ptr = (unsigned int *)PCI_REGS_ADDR + 1;
for (i=0; i<0x40; i+=4) {
pci_write_config_dword(PCIDEVID_405GP, i, *ptr++);
}
}
mtdcr(UIC0SR, 0xFFFFFFFF); /* clear all ints */
*magic = 0; /* clear pci reconfig magic again */
}
/*
* Decrease PLB latency timeout and reduce priority of the PCI bridge master
*/
#define PCI0_BRDGOPT1 0x4a
pci_write_config_word(PCIDEVID_405GP, PCI0_BRDGOPT1, 0x3f20);
/*
* Enable fairness and high bus utilization
*/
mtdcr(PLB0_ACR, 0x98000000);
free(dst);
return (0);
}
/*
* Check Board Identity:
*/
int checkboard (void)
{
char str[64];
int i = getenv_f("serial#", str, sizeof(str));
puts ("Board: ");
if (i == -1) {
puts ("### No HW ID - assuming PCI405");
} else {
puts (str);
}
gd->board_type = board_revision();
printf(" (Rev 1.%ld", gd->board_type);
if (gd->board_type >= 2) {
unsigned long CPC0_CR0Reg;
unsigned long value;
/*
* Setup GPIO pins (Trace/GPIO1 to GPIO)
*/
CPC0_CR0Reg = mfdcr(CPC0_CR0);
mtdcr(CPC0_CR0, CPC0_CR0Reg & ~0x08000000);
out_be32((void*)GPIO0_ODR, in_be32((void*)GPIO0_ODR) & ~0x40000000);
out_be32((void*)GPIO0_TCR, in_be32((void*)GPIO0_TCR) & ~0x40000000);
udelay(1000); /* wait some time before reading input */
value = in_be32((void*)GPIO0_IR) & 0x40000000; /* get config bits */
if (value) {
puts(", 33 MHz PCI");
} else {
puts(", 66 MHz PCI");
}
}
puts(")\n");
return 0;
}
/* ------------------------------------------------------------------------- */
#define UART1_MCR 0xef600404
int wpeeprom(int wp)
{
int wp_state = wp;
if (wp == 1) {
out_8((void *)UART1_MCR, in_8((void *)UART1_MCR) & ~0x02);
} else if (wp == 0) {
out_8((void *)UART1_MCR, in_8((void *)UART1_MCR) | 0x02);
} else {
if (in_8((void *)UART1_MCR) & 0x02) {
wp_state = 0;
} else {
wp_state = 1;
}
}
return wp_state;
}
int do_wpeeprom(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
int wp = -1;
if (argc >= 2) {
if (argv[1][0] == '1') {
wp = 1;
} else if (argv[1][0] == '0') {
wp = 0;
}
}
wp = wpeeprom(wp);
printf("EEPROM write protection %s\n", wp ? "ENABLED" : "DISABLED");
return 0;
}
U_BOOT_CMD(
wpeeprom, 2, 1, do_wpeeprom,
"Check/Enable/Disable I2C EEPROM write protection",
"wpeeprom\n"
" - check I2C EEPROM write protection state\n"
"wpeeprom 1\n"
" - enable I2C EEPROM write protection\n"
"wpeeprom 0\n"
" - disable I2C EEPROM write protection"
);