[Motion-PRO] Preliminary support for the Motion-PRO board.

1 files changed, 171 insertions, 0 deletions

diff --git a/board/motionpro/motionpro.c b/board/motionpro/motionpro.c
new file mode 100644
index 0000000..95576ed
--- /dev/null
+++ b/board/motionpro/motionpro.c
@@ -0,0 +1,171 @@
+/*
+ * (C) Copyright 2003-2007
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * modified for Promess PRO - by Andy Joseph, andy@promessdev.com
+ * modified for Promess PRO-Motion - by Robert McCullough, rob@promessdev.com
+ * modified by Chris M. Tumas 6/20/06 Change CAS latency to 2 from 3
+ * Also changed the refresh for 100Mhz operation
+ *
+ * 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 <mpc5xxx.h>
+
+
+/* Kollmorgen DPR initialization data */
+struct init_elem {
+	unsigned long addr;
+	unsigned len;
+	char *data;
+	} init_seq[] = {
+		{0x500003F2, 2, "\x86\x00"},		/* HW parameter */
+		{0x500003F0, 2, "\x00\x00"},
+		{0x500003EC, 4, "\x00\x80\xc1\x52"},	/* Magic word */
+	};
+
+/*
+ * Initialize Kollmorgen DPR
+ */
+static void kollmorgen_init(void)
+{
+	unsigned i, j;
+	vu_char *p;
+
+	for (i = 0; i < sizeof(init_seq) / sizeof(struct init_elem); ++i) {
+		p = (vu_char *)init_seq[i].addr;
+		for (j = 0; j < init_seq[i].len; ++j)
+			*(p + j) = *(init_seq[i].data + j);
+	}
+
+	printf("DPR:   Kollmorgen DPR initialized\n");
+}
+
+
+/*
+ * Early board initalization.
+ */
+int board_early_init_r(void)
+{
+	/* Now, when we are in RAM, disable Boot Chipselect and enable CS0 */
+	*(vu_long *)MPC5XXX_ADDECR &= ~(1 << 25);
+	*(vu_long *)MPC5XXX_ADDECR |= (1 << 16);
+
+	/* Initialize Kollmorgen DPR */
+	kollmorgen_init();
+
+	return 0;
+}
+
+
+#ifndef CFG_RAMBOOT
+/*
+ * Helper function to initialize SDRAM controller.
+ */
+static void sdram_start (int hi_addr)
+{
+	long hi_addr_bit = hi_addr ? 0x01000000 : 0;
+
+	/* unlock mode register */
+	*(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000000 |
+						hi_addr_bit;
+
+	/* precharge all banks */
+	*(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000002 |
+						hi_addr_bit;
+
+	/* auto refresh */
+	*(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000004 |
+						hi_addr_bit;
+
+	/* auto refresh, second time */
+	*(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000004 |
+						hi_addr_bit;
+
+	/* set mode register */
+	*(vu_long *)MPC5XXX_SDRAM_MODE = SDRAM_MODE;
+
+	/* normal operation */
+	*(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | hi_addr_bit;
+}
+#endif /* !CFG_RAMBOOT */
+
+
+/*
+ * Initalize SDRAM - configure SDRAM controller, detect memory size.
+ */
+long int initdram (int board_type)
+{
+	ulong dramsize = 0;
+#ifndef CFG_RAMBOOT
+	ulong test1, test2;
+
+	/* configure SDRAM start/end for detection */
+	*(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0x0000001e; /* 2G at 0x0 */
+	*(vu_long *)MPC5XXX_SDRAM_CS1CFG = 0x80000000; /* disabled */
+
+	/* setup config registers */
+	*(vu_long *)MPC5XXX_SDRAM_CONFIG1 = SDRAM_CONFIG1;
+	*(vu_long *)MPC5XXX_SDRAM_CONFIG2 = SDRAM_CONFIG2;
+
+	sdram_start(0);
+	test1 = get_ram_size((long *)CFG_SDRAM_BASE, 0x80000000);
+	sdram_start(1);
+	test2 = get_ram_size((long *)CFG_SDRAM_BASE, 0x80000000);
+	if (test1 > test2) {
+		sdram_start(0);
+		dramsize = test1;
+	} else {
+		dramsize = test2;
+	}
+
+	/* memory smaller than 1MB is impossible */
+	if (dramsize < (1 << 20))
+		dramsize = 0;
+
+	/* set SDRAM CS0 size according to the amount of RAM found */
+	if (dramsize > 0)
+		*(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0x13 +
+			__builtin_ffs(dramsize >> 20) - 1;
+        else
+		*(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0; /* disabled */
+
+	/* let SDRAM CS1 start right after CS0 and disable it */
+	*(vu_long *) MPC5XXX_SDRAM_CS1CFG = dramsize;
+
+#else /* !CFG_RAMBOOT */
+	/* retrieve size of memory connected to SDRAM CS0 */
+	dramsize = *(vu_long *)MPC5XXX_SDRAM_CS0CFG & 0xFF;
+	if (dramsize >= 0x13)
+		dramsize = (1 << (dramsize - 0x13)) << 20;
+	else
+		dramsize = 0;
+#endif /* CFG_RAMBOOT */
+
+	/* return total ram size */
+	return dramsize;
+}
+
+
+int checkboard (void)
+{
+	puts("Board: Promess Motion-PRO board\n");
+	return 0;
+}