1 files changed, 94 insertions, 0 deletions
diff --git a/board/mx31ads/mx31ads.c b/board/mx31ads/mx31ads.c
new file mode 100644
index 0000000..7c50c02
--- /dev/null
+++ b/board/mx31ads/mx31ads.c
@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2008, Guennadi Liakhovetski <lg@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 <asm/io.h>
+#include <asm/arch/mx31.h>
+#include <asm/arch/mx31-regs.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int dram_init (void)
+{
+	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
+	gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
+
+	return 0;
+}
+
+int board_init (void)
+{
+	int i;
+#if 0
+	/* CS0: Nor Flash */
+	/*
+	 * These are values from the RedBoot sources by Freescale. However,
+	 * under U-Boot with this configuration 32-bit accesses don't work,
+	 * lower 16 bits of data are read twice for each 32-bit read.
+	 */
+	__REG(CSCR_U(0)) = 0x23524E80;
+	__REG(CSCR_L(0)) = 0x10000D03; /* WRAP bit (1) is suspicious here, but
+					* disabling it doesn't help either */
+	__REG(CSCR_A(0)) = 0x00720900;
+#endif
+
+	/* setup pins for UART1 */
+	mx31_gpio_mux(MUX_RXD1__UART1_RXD_MUX);
+	mx31_gpio_mux(MUX_TXD1__UART1_TXD_MUX);
+	mx31_gpio_mux(MUX_RTS1__UART1_RTS_B);
+	mx31_gpio_mux(MUX_RTS1__UART1_CTS_B);
+
+	/* PBC setup */
+	/* Enable UART transceivers also reset the Ethernet/external UART */
+	readw(CS4_BASE + 4);
+
+	writew(0x8023, CS4_BASE + 4);
+
+	/* RedBoot also has an empty loop with 100000 iterations here -
+	 * clock doesn't run yet */
+	for (i = 0; i < 100000; i++)
+		;
+
+	/* Clear the reset, toggle the LEDs */
+	writew(0xDF, CS4_BASE + 6);
+
+	/* clock still doesn't run */
+	for (i = 0; i < 100000; i++)
+		;
+
+	/* See 1.5.4 in IMX31ADSE_PERI_BUS_CNTRL_CPLD_RM.pdf */
+	readb(CS4_BASE + 8);
+	readb(CS4_BASE + 7);
+	readb(CS4_BASE + 8);
+	readb(CS4_BASE + 7);
+
+	gd->bd->bi_arch_number = 447;		/* board id for linux */
+	gd->bd->bi_boot_params = 0x80000100;	/* adress of boot parameters */
+
+	return 0;
+}
+
+int checkboard (void)
+{
+	printf("Board: MX31ADS\n");
+	return 0;
+}