1 files changed, 107 insertions, 0 deletions
diff --git a/board/adder/adder.c b/board/adder/adder.c
new file mode 100644
index 0000000..cab6e2f
--- /dev/null
+++ b/board/adder/adder.c
@@ -0,0 +1,107 @@
+/*
+ * Copyright (C) 2004 Arabella Software Ltd.
+ * Yuli Barcohen <yuli@arabellasw.com>
+ *
+ * Support for Analogue&Micro Adder boards family.
+ * Tested on AdderII and Adder87x.
+ *
+ * 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 <mpc8xx.h>
+
+/*
+ * SDRAM is single Samsung K4S643232F-T70 chip.
+ * Minimal CPU frequency is 40MHz.
+ */
+static uint sdram_table[] = {
+	/* Single read	(offset 0x00 in UPM RAM) */
+	0x1f07fc24, 0xe0aefc04, 0x10adfc04, 0xe0bbbc00,
+	0x10f77c44, 0xf3fffc07, 0xfffffc04, 0xfffffc04,
+
+	/* Burst read	(offset 0x08 in UPM RAM) */
+	0x1f07fc24, 0xe0aefc04, 0x10adfc04, 0xf0affc00,
+	0xf0affc00, 0xf0affc00, 0xf0affc00, 0x10a77c44,
+	0xf7bffc47, 0xfffffc35, 0xfffffc34, 0xfffffc35,
+	0xfffffc35, 0x1ff77c35, 0xfffffc34, 0x1fb57c35,
+
+	/* Single write (offset 0x18 in UPM RAM) */
+	0x1f27fc24, 0xe0aebc04, 0x00b93c00, 0x13f77c47,
+	0xfffdfc04, 0xfffffc04, 0xfffffc04, 0xfffffc04,
+
+	/* Burst write	(offset 0x20 in UPM RAM) */
+	0x1f07fc24, 0xeeaebc00, 0x10ad7c00, 0xf0affc00,
+	0xf0affc00, 0xe0abbc00, 0x1fb77c47, 0xfffffc04,
+	0xfffffc04, 0xfffffc04, 0xfffffc04, 0xfffffc04,
+	0xfffffc04, 0xfffffc04, 0xfffffc04, 0xfffffc04,
+
+	/* Refresh	(offset 0x30 in UPM RAM) */
+	0x1ff5fca4, 0xfffffc04, 0xfffffc04, 0xfffffc04,
+	0xfffffc84, 0xfffffc07, 0xfffffc04, 0xfffffc04,
+	0xfffffc04, 0xfffffc04, 0xfffffc04, 0xfffffc04,
+
+	/* Exception	(offset 0x3C in UPM RAM) */
+	0xfffffc27, 0xfffffc04, 0xfffffc04, 0xfffffc04
+};
+
+long int initdram (int board_type)
+{
+	long int msize = CFG_SDRAM_SIZE;
+	volatile immap_t     *immap  = (volatile immap_t *)CFG_IMMR;
+	volatile memctl8xx_t *memctl = &immap->im_memctl;
+
+	upmconfig(UPMA, sdram_table, sizeof(sdram_table) / sizeof(uint));
+
+	/* Configure SDRAM refresh */
+	memctl->memc_mptpr = MPTPR_PTP_DIV32; /* BRGCLK/32 */
+
+	memctl->memc_mamr = (94 << 24) | CFG_MAMR;
+	memctl->memc_mar  = 0x0;
+	udelay(200);
+
+	/* Run precharge from location 0x15 */
+	memctl->memc_mcr = 0x80002115;
+	udelay(200);
+
+	/* Run 8 refresh cycles */
+	memctl->memc_mcr = 0x80002830;
+	udelay(200);
+
+	memctl->memc_mar = 0x88;
+	udelay(200);
+
+	/* Run MRS pattern from location 0x16 */
+	memctl->memc_mcr = 0x80002116;
+	udelay(200);
+
+	return msize;
+}
+
+int checkboard( void )
+{
+	puts("Board: Adder");
+#if defined(CONFIG_MPC885_FAMILY)
+	puts("87x\n");
+#elif defined(CONFIG_MPC866_FAMILY)
+	puts("II\n");
+#endif
+
+	return 0;
+}