arm926ejs: add NXP LPC32x0 cpu series support

This change adds initial support for NXP LPC32x0 SoC series.

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
Acked-by: Marek Vasut <marek.vasut@gmail.com>

1 files changed, 92 insertions, 0 deletions

diff --git a/arch/arm/include/asm/arch-lpc32xx/emc.h b/arch/arm/include/asm/arch-lpc32xx/emc.h
new file mode 100644
index 0000000..feb03bd
--- /dev/null
+++ b/arch/arm/include/asm/arch-lpc32xx/emc.h
@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 2011 by Vladimir Zapolskiy <vz@mleia.com>
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston,
+ * MA  02110-1301, USA.
+ */
+
+#ifndef _LPC32XX_EMC_H
+#define _LPC32XX_EMC_H
+
+#include <asm/types.h>
+
+/* EMC Registers */
+struct emc_regs {
+	u32 ctrl;		/* Controls operation of the EMC             */
+	u32 status;		/* Provides EMC status information           */
+	u32 config;		/* Configures operation of the EMC           */
+	u32 reserved0[5];
+	u32 control;		/* Controls dyn memory operation             */
+	u32 refresh;		/* Configures dyn memory refresh operation   */
+	u32 read_config;	/* Configures the dyn memory read strategy   */
+	u32 reserved1;
+	u32 t_rp;		/* Precharge command period                  */
+	u32 t_ras;		/* Active to precharge command period        */
+	u32 t_srex;		/* Self-refresh exit time                    */
+	u32 reserved2[2];
+	u32 t_wr;		/* Write recovery time                       */
+	u32 t_rc;		/* Active to active command period           */
+	u32 t_rfc;		/* Auto-refresh period                       */
+	u32 t_xsr;		/* Exit self-refresh to active command time  */
+	u32 t_rrd;		/* Active bank A to active bank B latency    */
+	u32 t_mrd;		/* Load mode register to active command time */
+	u32 t_cdlr;		/* Last data in to read command time         */
+	u32 reserved3[8];
+	u32 extended_wait;	/* time for static memory rd/wr transfers    */
+	u32 reserved4[31];
+	u32 config0;		/* Configuration information for the SDRAM   */
+	u32 rascas0;		/* RAS and CAS latencies for the SDRAM       */
+	u32 reserved5[6];
+	u32 config1;		/* Configuration information for the SDRAM   */
+	u32 rascas1;		/* RAS and CAS latencies for the SDRAM       */
+	u32 reserved6[54];
+	struct emc_stat_t {
+		u32 config;	/* Static memory configuration               */
+		u32 waitwen;	/* Delay from chip select to write enable    */
+		u32 waitoen;	/* Delay to output enable                    */
+		u32 waitrd;	/* Delay to a read access                    */
+		u32 waitpage;	/* Delay for async page mode read            */
+		u32 waitwr;	/* Delay to a write access                   */
+		u32 waitturn;	/* Number of bus turnaround cycles           */
+		u32 reserved;
+	} stat[4];
+	u32 reserved7[96];
+	struct emc_ahb_t {
+		u32 control;	/* Control register for AHB                  */
+		u32 status;	/* Status register for AHB                   */
+		u32 timeout;	/* Timeout register for AHB                  */
+		u32 reserved[5];
+	} ahb[5];
+};
+
+/* Static Memory Configuration Register bits */
+#define EMC_STAT_CONFIG_WP		(1 << 20)
+#define EMC_STAT_CONFIG_EW		(1 << 8)
+#define EMC_STAT_CONFIG_PB		(1 << 7)
+#define EMC_STAT_CONFIG_PC		(1 << 6)
+#define EMC_STAT_CONFIG_PM		(1 << 3)
+#define EMC_STAT_CONFIG_32BIT		(2 << 0)
+#define EMC_STAT_CONFIG_16BIT		(1 << 0)
+#define EMC_STAT_CONFIG_8BIT		(0 << 0)
+
+/* Static Memory Delay Registers */
+#define EMC_STAT_WAITWEN(n)		(((n) - 1) & 0x0F)
+#define EMC_STAT_WAITOEN(n)		(((n) - 1) & 0x0F)
+#define EMC_STAT_WAITRD(n)		(((n) - 1) & 0x1F)
+#define EMC_STAT_WAITPAGE(n)		(((n) - 1) & 0x1F)
+#define EMC_STAT_WAITWR(n)		(((n) - 2) & 0x1F)
+#define EMC_STAT_WAITTURN(n)		(((n) - 1) & 0x0F)
+
+#endif /* _LPC32XX_EMC_H */