--- /dev/null
+/*
+ * (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"
+);
Code Review / kvmfornfv.git / blobdiff