1 files changed, 65 insertions, 0 deletions
diff --git a/cpu/arm920t/ep93xx/lowlevel_init.S b/cpu/arm920t/ep93xx/lowlevel_init.S
new file mode 100644
index 0000000..a20ec89
--- /dev/null
+++ b/cpu/arm920t/ep93xx/lowlevel_init.S
@@ -0,0 +1,65 @@
+/*
+ * Low-level initialization for EP93xx
+ *
+ * Copyright (C) 2009 Matthias Kaehlcke <matthias@kaehlcke.net>
+ *
+ * Copyright (C) 2006 Dominic Rath <Dominic.Rath@gmx.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 <version.h>
+#include <asm/arch/ep93xx.h>
+
+.globl lowlevel_init
+lowlevel_init:
+	/* backup return address */
+	ldr r1, =SYSCON_SCRATCH0
+	str lr, [r1]
+
+	/* Turn on both LEDs */
+	bl red_LED_on
+	bl green_LED_on
+
+	/* Configure flash wait states before we switch to the PLL */
+	bl flash_cfg
+
+	/* Set up PLL */
+	bl pll_cfg
+
+	/* Turn off the Green LED and leave the Red LED on */
+	bl green_LED_off
+
+	/* Setup SDRAM */
+	bl sdram_cfg
+
+	/* Turn on Green LED, Turn off the Red LED */
+	bl green_LED_on
+	bl red_LED_off
+
+	/* FIXME: we use async mode for now */
+	mrc p15, 0, r0, c1, c0, 0
+	orr r0, r0, #0xc0000000
+	mcr p15, 0, r0, c1, c0, 0
+
+	/* restore return address */
+	ldr r1, =SYSCON_SCRATCH0
+	ldr lr, [r1]
+
+	mov pc, lr