1 files changed, 165 insertions, 0 deletions
diff --git a/board/RPXlite/RPXlite.c b/board/RPXlite/RPXlite.c
new file mode 100755
index 0000000..f37e07b
--- /dev/null
+++ b/board/RPXlite/RPXlite.c
@@ -0,0 +1,165 @@
+/*
+ * (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
+ */
+
+/*
+ * Yoo. Jonghoon, IPone, yooth@ipone.co.kr
+ * U-Boot port on RPXlite board
+ *
+ * DRAM related UPMA register values are modified.
+ * See RPXLite engineering note : 50MHz/60ns - UPM RAM WORDS
+ */
+
+#include <common.h>
+#include <mpc8xx.h>
+
+/* ------------------------------------------------------------------------- */
+
+static long int dram_size (long int, long int *, long int);
+
+/* ------------------------------------------------------------------------- */
+
+#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: RPXlite\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 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, 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;
+
+	memctl->memc_mamr = mamr_value;
+
+	return (get_ram_size (base, maxsize));
+}