Initial revision

1 files changed, 293 insertions, 0 deletions

diff --git a/board/ip860/ip860.c b/board/ip860/ip860.c
new file mode 100644
index 0000000..11f3327
--- /dev/null
+++ b/board/ip860/ip860.c
@@ -0,0 +1,293 @@
+/*
+ * (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 <commproc.h>
+#include <mpc8xx.h>
+
+/* ------------------------------------------------------------------------- */
+
+static long int dram_size (long int, long int *, long int);
+
+/* ------------------------------------------------------------------------- */
+
+#define	_NOT_USED_	0xFFFFFFFF
+
+const uint sdram_table[] = {
+	/*
+	 * Single Read. (Offset 0 in UPMA RAM)
+	 */
+	0x1f07fc04, 0xeeaefc04, 0x11adfc04, 0xefbbbc00,
+	0x1ff77c47,					/* last */
+	/*
+	 * SDRAM Initialization (offset 5 in UPMA RAM)
+	 *
+	 * This is no UPM entry point. The following definition uses
+	 * the remaining space to establish an initialization
+	 * sequence, which is executed by a RUN command.
+	 *
+	 */
+	0x1ff77c34, 0xefeabc34, 0x1fb57c35,	/* last */
+	/*
+	 * Burst Read. (Offset 8 in UPMA RAM)
+	 */
+	0x1f07fc04, 0xeeaefc04, 0x10adfc04, 0xf0affc00,
+	0xf0affc00, 0xf1affc00, 0xefbbbc00, 0x1ff77c47,	/* last */
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	/*
+	 * Single Write. (Offset 18 in UPMA RAM)
+	 */
+	0x1f27fc04, 0xeeaebc00, 0x01b93c04, 0x1ff77c47,	/* last */
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	/*
+	 * Burst Write. (Offset 20 in UPMA RAM)
+	 */
+	0x1f07fc04, 0xeeaebc00, 0x10ad7c00, 0xf0affc00,
+	0xf0affc00, 0xe1bbbc04, 0x1ff77c47,	/* last */
+	_NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	/*
+	 * Refresh  (Offset 30 in UPMA RAM)
+	 */
+	0x1ff5fc84, 0xfffffc04, 0xfffffc04, 0xfffffc04,
+	0xfffffc84, 0xfffffc07,		/* last */
+	_NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	/*
+	 * Exception. (Offset 3c in UPMA RAM)
+	 */
+	0x7ffffc07,					/* last */
+	_NOT_USED_, _NOT_USED_, _NOT_USED_,
+};
+
+/* ------------------------------------------------------------------------- */
+
+
+/*
+ * Check Board Identity:
+ *
+ * Test ID string (IP860...)
+ */
+
+int checkboard (void)
+{
+	unsigned char *s, *e;
+	unsigned char buf[64];
+	int i;
+
+	puts ("Board: ");
+
+	i = getenv_r ("serial#", buf, sizeof (buf));
+	s = (i > 0) ? buf : NULL;
+
+	if (!s || strncmp (s, "IP860", 5)) {
+		puts ("### No HW ID - assuming IP860");
+	} else {
+		for (e = s; *e; ++e) {
+			if (*e == ' ')
+				break;
+		}
+
+		for (; s < e; ++s) {
+			putc (*s);
+		}
+	}
+
+	putc ('\n');
+
+	return (0);
+}
+
+/* ------------------------------------------------------------------------- */
+
+long int initdram (int board_type)
+{
+	volatile immap_t *immap = (immap_t *) CFG_IMMR;
+	volatile memctl8xx_t *memctl = &immap->im_memctl;
+	long int size;
+
+	upmconfig (UPMA, (uint *) sdram_table,
+			   sizeof (sdram_table) / sizeof (uint));
+
+	/*
+	 * Preliminary prescaler for refresh
+	 */
+	memctl->memc_mptpr = 0x0400;
+
+	memctl->memc_mar = 0x00000088;
+
+	/*
+	 * Map controller banks 2 to the SDRAM address
+	 */
+	memctl->memc_or2 = CFG_OR2;
+	memctl->memc_br2 = CFG_BR2;
+
+	/* IP860 boards have only one bank SDRAM */
+
+
+	udelay (200);
+
+	/* perform SDRAM initializsation sequence */
+
+	memctl->memc_mamr = 0xC3804114;
+	memctl->memc_mcr = 0x80004105;	/* run precharge pattern from loc 5 */
+	udelay (1);
+	memctl->memc_mamr = 0xC3804118;
+	memctl->memc_mcr = 0x80004130;	/* run refresh pattern 8 times */
+
+	udelay (1000);
+
+	/*
+	 * Check SDRAM Memory Size
+	 */
+	size = dram_size (CFG_MAMR, (ulong *) SDRAM_BASE, SDRAM_MAX_SIZE);
+
+	udelay (1000);
+
+	memctl->memc_or2 = ((-size) & 0xFFFF0000) | SDRAM_TIMING;
+	memctl->memc_br2 = (CFG_SDRAM_BASE & BR_BA_MSK) | BR_MS_UPMA | BR_V;
+
+	udelay (10000);
+
+	/*
+	 * Also, map other memory to correct position
+	 */
+
+#if (defined(CFG_OR1) && defined(CFG_BR1_PRELIM))
+	memctl->memc_or1 = CFG_OR1;
+	memctl->memc_br1 = CFG_BR1;
+#endif
+
+#if defined(CFG_OR3) && defined(CFG_BR3)
+	memctl->memc_or3 = CFG_OR3;
+	memctl->memc_br3 = CFG_BR3;
+#endif
+
+#if defined(CFG_OR4) && defined(CFG_BR4)
+	memctl->memc_or4 = CFG_OR4;
+	memctl->memc_br4 = CFG_BR4;
+#endif
+
+#if defined(CFG_OR5) && defined(CFG_BR5)
+	memctl->memc_or5 = CFG_OR5;
+	memctl->memc_br5 = CFG_BR5;
+#endif
+
+#if defined(CFG_OR6) && defined(CFG_BR6)
+	memctl->memc_or6 = CFG_OR6;
+	memctl->memc_br6 = CFG_BR6;
+#endif
+
+#if defined(CFG_OR7) && defined(CFG_BR7)
+	memctl->memc_or7 = CFG_OR7;
+	memctl->memc_br7 = CFG_BR7;
+#endif
+
+	return (size);
+}
+
+/* ------------------------------------------------------------------------- */
+
+/*
+ * 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);
+}
+
+/* ------------------------------------------------------------------------- */
+
+void reset_phy (void)
+{
+	volatile immap_t *immr = (immap_t *) CFG_IMMR;
+	ulong mask = PB_ENET_RESET | PB_ENET_JABD;
+	ulong reg;
+
+	/* Make sure PHY is not in low-power mode */
+	immr->im_cpm.cp_pbpar &= ~(mask);	/* GPIO */
+	immr->im_cpm.cp_pbodr &= ~(mask);	/* active output */
+
+	/* Set  JABD low  (no JABber Disable),
+	 * and RESET high (Reset PHY)
+	 */
+	reg = immr->im_cpm.cp_pbdat;
+	reg = (reg & ~PB_ENET_JABD) | PB_ENET_RESET;
+	immr->im_cpm.cp_pbdat = reg;
+
+	/* now drive outputs */
+	immr->im_cpm.cp_pbdir |= mask;	/* output */
+	udelay (1000);
+	/*
+	   * Release RESET signal
+	 */
+	immr->im_cpm.cp_pbdat &= ~(PB_ENET_RESET);
+	udelay (1000);
+}
+
+/* ------------------------------------------------------------------------- */