esd CPCI2DP board added

Patch by Matthias Fuchs, 22 Sep 2005

1 files changed, 215 insertions, 0 deletions

diff --git a/board/esd/cpci2dp/cpci2dp.c b/board/esd/cpci2dp/cpci2dp.c
new file mode 100644
index 0000000..0949a7d
--- /dev/null
+++ b/board/esd/cpci2dp/cpci2dp.c
@@ -0,0 +1,215 @@
+/*
+ * (C) Copyright 2005
+ * Matthias Fuchs, esd gmbh germany, matthias.fuchs@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>
+
+int board_early_init_f (void)
+{
+	unsigned long cntrl0Reg;
+
+	/*
+	 * Setup GPIO pins (CS4 as GPIO)
+	 */
+	cntrl0Reg = mfdcr(cntrl0);
+	mtdcr(cntrl0, cntrl0Reg | 0x00800000);
+
+	out32(GPIO0_OR,  CFG_INTA_FAKE | CFG_EEPROM_WP); /* set output pins to high */
+	out32(GPIO0_ODR, CFG_INTA_FAKE);                 /* INTA# is open drain */
+	out32(GPIO0_TCR, CFG_INTA_FAKE | CFG_EEPROM_WP); /* setup for output        */
+
+	/*
+	 * 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) PB0; active low; level sensitive
+	 * IRQ 26 (EXT IRQ 1) PB1; active low; level sensitive
+	 * IRQ 27 (EXT IRQ 2) PCI SLOT 0; active low; level sensitive
+	 * IRQ 28 (EXT IRQ 3) PCI SLOT 1; active low; level sensitive
+	 * IRQ 29 (EXT IRQ 4) PCI SLOT 2; active low; level sensitive
+	 * IRQ 30 (EXT IRQ 5) PCI SLOT 3; active low; level sensitive
+	 * IRQ 31 (EXT IRQ 6) unused
+	 */
+	mtdcr(uicsr, 0xFFFFFFFF);       /* clear all ints */
+	mtdcr(uicer, 0x00000000);       /* disable all ints */
+	mtdcr(uiccr, 0x00000000);       /* set all to be non-critical*/
+	mtdcr(uicpr, 0xFFFFFF81);       /* 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 */
+
+	return 0;
+}
+
+
+int misc_init_f (void)
+{
+	return 0;  /* dummy implementation */
+}
+
+
+int misc_init_r (void)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+	unsigned long cntrl0Reg;
+
+	/* adjust flash start and offset */
+	gd->bd->bi_flashstart = 0 - gd->bd->bi_flashsize;
+	gd->bd->bi_flashoffset = 0;
+
+	/*
+	 * Select cts (and not dsr) on uart1
+	 */
+	cntrl0Reg = mfdcr(cntrl0);
+	mtdcr(cntrl0, cntrl0Reg | 0x00001000);
+
+	return (0);
+}
+
+
+/*
+ * Check Board Identity:
+ */
+int checkboard (void)
+{
+	unsigned char str[64];
+	int i = getenv_r ("serial#", str, sizeof(str));
+
+	puts ("Board: ");
+
+	if (i == -1) {
+		puts ("### No HW ID - assuming CPCI2DP");
+	} else {
+		puts(str);
+	}
+
+	printf(" (Ver 1.0)");
+
+	putc ('\n');
+
+	return 0;
+}
+
+/* ------------------------------------------------------------------------- */
+
+long int initdram (int board_type)
+{
+	unsigned long val;
+
+	mtdcr(memcfga, mem_mb0cf);
+	val = mfdcr(memcfgd);
+
+	return (4*1024*1024 << ((val & 0x000e0000) >> 17));
+}
+
+/* ------------------------------------------------------------------------- */
+
+int testdram (void)
+{
+	/* TODO: XXX XXX XXX */
+	printf ("test: 64 MB - ok\n");
+
+	return (0);
+}
+
+/* ------------------------------------------------------------------------- */
+
+#if defined(CFG_EEPROM_WREN)
+/* Input: <dev_addr>  I2C address of EEPROM device to enable.
+ *         <state>     -1: deliver current state
+ *	               0: disable write
+ *		       1: enable write
+ *  Returns:           -1: wrong device address
+ *                      0: dis-/en- able done
+ *		     0/1: current state if <state> was -1.
+ */
+int eeprom_write_enable (unsigned dev_addr, int state) {
+	if (CFG_I2C_EEPROM_ADDR != dev_addr) {
+		return -1;
+	}
+	else {
+		switch (state) {
+		case 1:
+			/* Enable write access, clear bit GPIO_SINT2. */
+			out32(GPIO0_OR, in32(GPIO0_OR) & ~CFG_EEPROM_WP);
+			state = 0;
+			break;
+		case 0:
+			/* Disable write access, set bit GPIO_SINT2. */
+			out32(GPIO0_OR, in32(GPIO0_OR) | CFG_EEPROM_WP);
+			state = 0;
+			break;
+		default:
+			/* Read current status back. */
+			state = (0 == (in32(GPIO0_OR) & CFG_EEPROM_WP));
+			break;
+		}
+	}
+	return state;
+}
+#endif
+
+#if defined(CFG_EEPROM_WREN)
+int do_eep_wren (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	int query = argc == 1;
+	int state = 0;
+
+	if (query) {
+		/* Query write access state. */
+		state = eeprom_write_enable (CFG_I2C_EEPROM_ADDR, -1);
+		if (state < 0) {
+			puts ("Query of write access state failed.\n");
+		}
+		else {
+			printf ("Write access for device 0x%0x is %sabled.\n",
+				CFG_I2C_EEPROM_ADDR, state ? "en" : "dis");
+			state = 0;
+		}
+	}
+	else {
+		if ('0' == argv[1][0]) {
+			/* Disable write access. */
+			state = eeprom_write_enable (CFG_I2C_EEPROM_ADDR, 0);
+		}
+		else {
+			/* Enable write access. */
+			state = eeprom_write_enable (CFG_I2C_EEPROM_ADDR, 1);
+		}
+		if (state < 0) {
+			puts ("Setup of write access state failed.\n");
+		}
+	}
+
+	return state;
+}
+
+U_BOOT_CMD(
+	   eepwren,	2,	0,	do_eep_wren,
+	   "eepwren - Enable / disable / query EEPROM write access\n",
+	   NULL
+	   );
+#endif /* #if defined(CFG_EEPROM_WREN) */