mirror of
https://github.com/AsahiLinux/u-boot
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222 lines
6 KiB
C
222 lines
6 KiB
C
/*
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* (C) Copyright 2001-2003
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* Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <asm/processor.h>
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#include <command.h>
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#include <malloc.h>
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DECLARE_GLOBAL_DATA_PTR;
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extern void lxt971_no_sleep(void);
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int board_revision(void)
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{
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unsigned long osrl_reg;
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unsigned long isr1l_reg;
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unsigned long tcr_reg;
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unsigned long value;
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/*
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* Get version of HUB405 board from GPIO's
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*/
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/*
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* Setup GPIO pin(s) (IRQ6/GPIO23)
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*/
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osrl_reg = in32(GPIO0_OSRH);
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isr1l_reg = in32(GPIO0_ISR1H);
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tcr_reg = in32(GPIO0_TCR);
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out32(GPIO0_OSRH, osrl_reg & ~0x00030000); /* output select */
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out32(GPIO0_ISR1H, isr1l_reg | 0x00030000); /* input select */
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out32(GPIO0_TCR, tcr_reg & ~0x00000100); /* select input */
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udelay(1000); /* wait some time before reading input */
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value = in32(GPIO0_IR) & 0x00000100; /* get config bits */
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/*
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* Restore GPIO settings
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*/
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out32(GPIO0_OSRH, osrl_reg); /* output select */
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out32(GPIO0_ISR1H, isr1l_reg); /* input select */
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out32(GPIO0_TCR, tcr_reg); /* enable output driver for outputs */
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if (value & 0x00000100) {
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/* Revision 1.1 or 1.2 detected */
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return 1;
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}
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/* Revision 1.0 */
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return 0;
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}
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int board_early_init_f (void)
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{
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/*
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* IRQ 0-15 405GP internally generated; active high; level sensitive
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* IRQ 16 405GP internally generated; active low; level sensitive
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* IRQ 17-24 RESERVED
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* IRQ 25 (EXT IRQ 0) CAN0; active low; level sensitive
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* IRQ 26 (EXT IRQ 1) SER0 ; active low; level sensitive
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* IRQ 27 (EXT IRQ 2) SER1; active low; level sensitive
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* IRQ 28 (EXT IRQ 3) FPGA 0; active low; level sensitive
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* IRQ 29 (EXT IRQ 4) FPGA 1; active low; level sensitive
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* IRQ 30 (EXT IRQ 5) PCI INTA; active low; level sensitive
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* IRQ 31 (EXT IRQ 6) COMPACT FLASH; active high; level sensitive
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*/
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mtdcr(uicsr, 0xFFFFFFFF); /* clear all ints */
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mtdcr(uicer, 0x00000000); /* disable all ints */
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mtdcr(uiccr, 0x00000000); /* set all to be non-critical*/
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mtdcr(uicpr, 0xFFFFFF9F); /* set int polarities */
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mtdcr(uictr, 0x10000000); /* set int trigger levels */
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mtdcr(uicvcr, 0x00000001); /* set vect base=0,INT0 highest priority*/
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mtdcr(uicsr, 0xFFFFFFFF); /* clear all ints */
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/*
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* EBC Configuration Register: set ready timeout to 512 ebc-clks -> ca. 15 us
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*/
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mtebc (epcr, 0xa8400000); /* ebc always driven */
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return 0;
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}
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int misc_init_r (void)
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{
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volatile unsigned char *duart0_mcr = (unsigned char *)((ulong)DUART0_BA + 4);
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volatile unsigned char *duart1_mcr = (unsigned char *)((ulong)DUART1_BA + 4);
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volatile unsigned char *duart2_mcr = (unsigned char *)((ulong)DUART2_BA + 4);
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volatile unsigned char *duart3_mcr = (unsigned char *)((ulong)DUART3_BA + 4);
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volatile unsigned char *led_reg = (unsigned char *)((ulong)DUART0_BA + 0x20);
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unsigned long val;
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int delay, flashcnt;
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char *str;
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char hw_rev[4];
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/*
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* Enable interrupts in exar duart mcr[3]
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*/
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*duart0_mcr = 0x08;
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*duart1_mcr = 0x08;
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*duart2_mcr = 0x08;
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*duart3_mcr = 0x08;
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/*
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* Set RS232/RS422 control (RS232 = high on GPIO)
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*/
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val = in32(GPIO0_OR);
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val &= ~(CONFIG_SYS_UART2_RS232 | CONFIG_SYS_UART3_RS232 | CONFIG_SYS_UART4_RS232 | CONFIG_SYS_UART5_RS232);
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str = getenv("phys0");
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if (!str || (str && (str[0] == '0')))
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val |= CONFIG_SYS_UART2_RS232;
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str = getenv("phys1");
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if (!str || (str && (str[0] == '0')))
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val |= CONFIG_SYS_UART3_RS232;
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str = getenv("phys2");
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if (!str || (str && (str[0] == '0')))
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val |= CONFIG_SYS_UART4_RS232;
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str = getenv("phys3");
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if (!str || (str && (str[0] == '0')))
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val |= CONFIG_SYS_UART5_RS232;
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out32(GPIO0_OR, val);
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/*
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* check board type and setup AP power
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*/
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str = getenv("bd_type"); /* this is only set on non prototype hardware */
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if (str != NULL) {
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if ((strcmp(str, "swch405") == 0) || ((!strcmp(str, "hub405") && (gd->board_type >= 1)))) {
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unsigned char led_reg_default = 0;
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str = getenv("ap_pwr");
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if (!str || (str && (str[0] == '1')))
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led_reg_default = 0x04 | 0x02 ; /* U2_LED | AP_PWR */
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/*
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* Flash LEDs
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*/
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for (flashcnt = 0; flashcnt < 3; flashcnt++) {
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*led_reg = led_reg_default; /* LED_A..D off */
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for (delay = 0; delay < 100; delay++)
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udelay(1000);
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*led_reg = led_reg_default | 0xf0; /* LED_A..D on */
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for (delay = 0; delay < 50; delay++)
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udelay(1000);
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}
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*led_reg = led_reg_default;
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}
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}
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/*
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* Reset external DUARTs
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*/
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out32(GPIO0_OR, in32(GPIO0_OR) | CONFIG_SYS_DUART_RST); /* set reset to high */
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udelay(10); /* wait 10us */
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out32(GPIO0_OR, in32(GPIO0_OR) & ~CONFIG_SYS_DUART_RST); /* set reset to low */
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udelay(1000); /* wait 1ms */
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/*
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* Store hardware revision in environment for further processing
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*/
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sprintf(hw_rev, "1.%ld", gd->board_type);
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setenv("hw_rev", hw_rev);
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return (0);
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}
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/*
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* Check Board Identity:
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*/
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int checkboard (void)
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{
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char str[64];
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int i = getenv_r ("serial#", str, sizeof(str));
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puts ("Board: ");
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if (i == -1) {
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puts ("### No HW ID - assuming HUB405");
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} else {
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puts(str);
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}
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if (getenv_r("bd_type", str, sizeof(str)) != -1) {
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printf(" (%s", str);
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} else {
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puts(" (Missing bd_type!");
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}
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gd->board_type = board_revision();
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printf(", Rev 1.%ld)\n", gd->board_type);
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/*
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* Disable sleep mode in LXT971
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*/
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lxt971_no_sleep();
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return 0;
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}
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