Initial revision

1 files changed, 290 insertions, 0 deletions

diff --git a/board/RPXClassic/RPXClassic.c b/board/RPXClassic/RPXClassic.c
new file mode 100644
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+++ b/board/RPXClassic/RPXClassic.c
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+/*
+ * (C)	Copyright 2001
+ * Stäubli Faverges - <www.staubli.com>
+ * Pierre AUBERT  p.aubert@staubli.com
+ * U-Boot port on RPXClassic LF (CLLF_BW31) board
+ *
+ * (C) Copyright 2000
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * 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 <i2c.h>
+#include <config.h>
+#include <mpc8xx.h>
+
+/* ------------------------------------------------------------------------- */
+
+static long int dram_size (long int, long int *, long int);
+static unsigned char aschex_to_byte (unsigned char *cp);
+
+/* ------------------------------------------------------------------------- */
+
+#define _NOT_USED_	0xFFFFCC25
+
+const uint sdram_table[] =
+{
+	/*
+	 * Single Read. (Offset 00h in UPMA RAM)
+	 */
+	0xCFFFCC24, 0x0FFFCC04, 0X0CAFCC04, 0X03AFCC08,
+	0x3FBFCC27, /* last */
+	_NOT_USED_, _NOT_USED_, _NOT_USED_,
+
+	/*
+	 * Burst Read. (Offset 08h in UPMA RAM)
+	 */
+	0xCFFFCC24, 0x0FFFCC04, 0x0CAFCC84, 0x03AFCC88,
+	0x3FBFCC27, /* last */
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_,
+
+	/*
+	 * Single Write. (Offset 18h in UPMA RAM)
+	 */
+	0xCFFFCC24, 0x0FFFCC04, 0x0CFFCC04, 0x03FFCC00,
+	0x3FFFCC27, /* last */
+	_NOT_USED_, _NOT_USED_, _NOT_USED_,
+
+	/*
+	 * Burst Write. (Offset 20h in UPMA RAM)
+	 */
+	0xCFFFCC24, 0x0FFFCC04, 0x0CFFCC80, 0x03FFCC8C,
+	0x0CFFCC00, 0x33FFCC27, /* last */
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_,
+
+	/*
+	 * Refresh. (Offset 30h in UPMA RAM)
+	 */
+	0xC0FFCC24, 0x03FFCC24, 0x0FFFCC24, 0x0FFFCC24,
+	0x3FFFCC27, /* last */
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_,
+
+	/*
+	 * Exception. (Offset 3Ch in UPMA RAM)
+	 */
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_
+};
+
+/* ------------------------------------------------------------------------- */
+
+
+/*
+ * Check Board Identity:
+ */
+
+int checkboard (void)
+{
+	puts ("Board: RPXClassic\n");
+	return (0);
+}
+
+/*-----------------------------------------------------------------------------
+ * board_get_enetaddr -- Read the MAC Address in the I2C EEPROM
+ *-----------------------------------------------------------------------------
+ */
+void board_get_enetaddr (uchar * enet)
+{
+	int i;
+	char buff[256], *cp;
+
+	/* Initialize I2C					*/
+	i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
+
+	/* Read 256 bytes in EEPROM				*/
+	i2c_read (0x54, 0, 1, buff, 128);
+	i2c_read (0x54, 128, 1, buff + 128, 128);
+
+	/* Retrieve MAC address in buffer (key EA)		*/
+	for (cp = buff;;) {
+		if (cp[0] == 'E' && cp[1] == 'A') {
+			cp += 3;
+			/* Read MAC address			*/
+			for (i = 0; i < 6; i++, cp += 2) {
+				enet[i] = aschex_to_byte (cp);
+			}
+		}
+		/* Scan to the end of the record		*/
+		while ((*cp != '\n') && (*cp != 0xff)) {
+			cp++;
+		}
+		/* If the next character is a \n, 0 or ff, we are done.	*/
+		cp++;
+		if ((*cp == '\n') || (*cp == 0) || (*cp == 0xff))
+			break;
+	}
+
+#ifdef CONFIG_FEC_ENET
+	/* The MAC address is the same as normal ethernet except the 3rd byte	 */
+	/* (See the E.P. Planet Core Overview manual		*/
+	enet[3] |= 0x80;
+
+	/* Validate the fast ethernet tranceiver		*/
+	*((volatile uchar *) BCSR2) &= ~BCSR2_MIICTL;
+	*((volatile uchar *) BCSR2) &= ~BCSR2_MIIPWRDWN;
+	*((volatile uchar *) BCSR2) |= BCSR2_MIIRST;
+	*((volatile uchar *) BCSR2) |= BCSR2_MIIPWRDWN;
+#endif
+
+	printf ("MAC address = %02x:%02x:%02x:%02x:%02x:%02x\n",
+		enet[0], enet[1], enet[2], enet[3], enet[4], enet[5]);
+
+}
+
+void rpxclassic_init (void)
+{
+	/* Enable NVRAM */
+	*((uchar *) BCSR0) |= BCSR0_ENNVRAM;
+
+}
+
+/* ------------------------------------------------------------------------- */
+
+long int initdram (int board_type)
+{
+	volatile immap_t *immap = (immap_t *) CFG_IMMR;
+	volatile memctl8xx_t *memctl = &immap->im_memctl;
+	long int size10;
+
+	upmconfig (UPMA, (uint *) sdram_table,
+			   sizeof (sdram_table) / sizeof (uint));
+
+	/* Refresh clock prescalar */
+	memctl->memc_mptpr = CFG_MPTPR;
+
+	memctl->memc_mar = 0x00000000;
+
+	/* Map controller banks 1 to the SDRAM bank */
+	memctl->memc_or1 = CFG_OR1_PRELIM;
+	memctl->memc_br1 = CFG_BR1_PRELIM;
+
+	memctl->memc_mamr = CFG_MAMR_10COL & (~(MAMR_PTAE));	/* no refresh yet */
+
+	udelay (200);
+
+	/* perform SDRAM initializsation sequence */
+
+	memctl->memc_mcr = 0x80002230;	/* SDRAM bank 0 - refresh twice */
+	udelay (1);
+
+	memctl->memc_mamr |= MAMR_PTAE; /* enable refresh */
+
+	udelay (1000);
+
+	/* Check Bank 0 Memory Size
+	 * try 10 column mode
+	 */
+
+	size10 = dram_size (CFG_MAMR_10COL, (ulong *) SDRAM_BASE_PRELIM,
+						SDRAM_MAX_SIZE);
+
+	return (size10);
+}
+
+/* ------------------------------------------------------------------------- */
+
+/*
+ * Check memory range for valid RAM. A simple memory test determines
+ * the actually available RAM size between addresses `base' and
+ * `base + maxsize'. Some (not all) hardware errors are detected:
+ * - short between address lines
+ * - short between data lines
+ */
+
+static long int dram_size (long int mamr_value, long int *base, long int maxsize)
+{
+	volatile immap_t *immap = (immap_t *) CFG_IMMR;
+	volatile memctl8xx_t *memctl = &immap->im_memctl;
+	volatile long int *addr;
+	ulong cnt, val;
+	ulong save[32];			/* to make test non-destructive */
+	unsigned char i = 0;
+
+	memctl->memc_mamr = mamr_value;
+
+	for (cnt = maxsize / sizeof (long); cnt > 0; cnt >>= 1) {
+		addr = base + cnt;	/* pointer arith! */
+
+		save[i++] = *addr;
+		*addr = ~cnt;
+	}
+
+	/* write 0 to base address */
+	addr = base;
+	save[i] = *addr;
+	*addr = 0;
+
+	/* check at base address */
+	if ((val = *addr) != 0) {
+		*addr = save[i];
+		return (0);
+	}
+
+	for (cnt = 1; cnt <= maxsize / sizeof (long); cnt <<= 1) {
+		addr = base + cnt;		/* pointer arith! */
+
+		val = *addr;
+		*addr = save[--i];
+
+		if (val != (~cnt)) {
+			return (cnt * sizeof (long));
+		}
+	}
+	return (maxsize);
+}
+static unsigned char aschex_to_byte (unsigned char *cp)
+{
+	u_char byte, c;
+
+	c = *cp++;
+
+	if ((c >= 'A') && (c <= 'F')) {
+		c -= 'A';
+		c += 10;
+	} else if ((c >= 'a') && (c <= 'f')) {
+		c -= 'a';
+		c += 10;
+	} else {
+		c -= '0';
+	}
+
+	byte = c * 16;
+
+	c = *cp;
+
+	if ((c >= 'A') && (c <= 'F')) {
+		c -= 'A';
+		c += 10;
+	} else if ((c >= 'a') && (c <= 'f')) {
+		c -= 'a';
+		c += 10;
+	} else {
+		c -= '0';
+	}
+
+	byte += c;
+
+	return (byte);
+}