/* * (C) Copyright 2001-2004 * Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com * * 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 <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 */ int gunzip(void *, int, unsigned char *, unsigned long *); int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); 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 cntrl0Reg; unsigned long value; /* * Get version of PCI405 board from GPIO's */ /* * Setup GPIO pins (CS2/GPIO11 and CS3/GPIO12 as GPIO) */ cntrl0Reg = mfdcr(cntrl0); mtdcr(cntrl0, cntrl0Reg | 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(cntrl0, cntrl0Reg); 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 cntrl0Reg; /* * 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(uicsr, 0xFFFFFFFF); /* clear all ints */ mtdcr(uicer, 0x00000000); /* disable all ints */ mtdcr(uiccr, 0x00000000); /* set all to be non-critical*/ mtdcr(uicpr, 0xFFFFFF80); /* set int polarities */ mtdcr(uictr, 0x10000000); /* set int trigger levels */ mtdcr(uicvcr, 0x00000001); /* set vect base=0,INT0 highest priority*/ mtdcr(uicsr, 0xFFFFFFFF); /* clear all ints */ /* * Setup GPIO pins (IRQ4/GPIO21 as GPIO) */ cntrl0Reg = mfdcr(cntrl0); mtdcr(cntrl0, cntrl0Reg | 0x00008000); /* * Setup GPIO pins (CS6+CS7 as GPIO) */ mtdcr(cntrl0, cntrl0Reg | 0x00300000); /* * EBC Configuration Register: set ready timeout to 512 ebc-clks -> ca. 25 us */ mtebc (epcr, 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(uicsr, 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); #define plb0_acr 0x87 /* * 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_r ("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 cntrl0Reg; unsigned long value; /* * Setup GPIO pins (Trace/GPIO1 to GPIO) */ cntrl0Reg = mfdcr(cntrl0); mtdcr(cntrl0, cntrl0Reg & ~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 *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" );