arm, davinci, am1808: add lowlevel functions for booting from NOR

Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Paulraj Sandeep <s-paulraj@ti.com>
Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>

1 files changed, 44 insertions, 0 deletions

diff --git a/arch/arm/include/asm/arch-davinci/am1808_lowlevel.h b/arch/arm/include/asm/arch-davinci/am1808_lowlevel.h
new file mode 100644
index 0000000000..0bc7f76f1c
--- /dev/null
+++ b/arch/arm/include/asm/arch-davinci/am1808_lowlevel.h
@@ -0,0 +1,44 @@
+/*
+ * SoC-specific lowlevel code for AM1808 and similar chips
+ *
+ * Copyright (C) 2011
+ * Heiko Schocher, DENX Software Engineering, hs@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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#ifndef __AM1808_LOWLEVEL_H
+#define __AM1808_LOWLEVEL_H
+
+/* NOR Boot Configuration Word Field Descriptions */
+#define AM1808_NORBOOT_COPY_XK(X)	((X - 1) << 8)
+#define AM1808_NORBOOT_METHOD_DIRECT	(1 << 4)
+#define AM1808_NORBOOT_16BIT		(1 << 0)
+
+#define dv_maskbits(addr, val) \
+	writel((readl(addr) & val), addr)
+
+void am1808_waitloop(unsigned long loopcnt);
+int am1808_pll_init(struct davinci_pllc_regs *reg, unsigned long pllmult);
+void am1808_lpc_transition(unsigned char pscnum, unsigned char module,
+		unsigned char domain, unsigned char state);
+int am1808_ddr_setup(unsigned int freq);
+void am1808_psc_init(void);
+void am1808_pinmux_ctl(unsigned long offset, unsigned long mask,
+	unsigned long value);
+
+#endif /* #ifndef __AM1808_LOWLEVEL_H */