iMX28: Initial support for iMX28 CPU

This patch supports:
- Timers
- Debug UART
- Clock

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Detlev Zundel <dzu@denx.de>
diff --git a/arch/arm/include/asm/arch-mx28/regs-ocotp.h b/arch/arm/include/asm/arch-mx28/regs-ocotp.h
new file mode 100644
index 0000000..ea2fd7b
--- /dev/null
+++ b/arch/arm/include/asm/arch-mx28/regs-ocotp.h
@@ -0,0 +1,173 @@
+/*
+ * Freescale i.MX28 OCOTP Register Definitions
+ *
+ * Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
+ * on behalf of DENX Software Engineering GmbH
+ *
+ * Based on code from LTIB:
+ * Copyright 2008-2010 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * 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
+ *
+ */
+
+#ifndef __MX28_REGS_OCOTP_H__
+#define __MX28_REGS_OCOTP_H__
+
+#include <asm/arch/regs-common.h>
+
+#ifndef	__ASSEMBLY__
+struct mx28_ocotp_regs {
+	mx28_reg(hw_ocotp_ctrl)		/* 0x0 */
+	mx28_reg(hw_ocotp_data)		/* 0x10 */
+	mx28_reg(hw_ocotp_cust0)	/* 0x20 */
+	mx28_reg(hw_ocotp_cust1)	/* 0x30 */
+	mx28_reg(hw_ocotp_cust2)	/* 0x40 */
+	mx28_reg(hw_ocotp_cust3)	/* 0x50 */
+	mx28_reg(hw_ocotp_crypto0)	/* 0x60 */
+	mx28_reg(hw_ocotp_crypto1)	/* 0x70 */
+	mx28_reg(hw_ocotp_crypto2)	/* 0x80 */
+	mx28_reg(hw_ocotp_crypto3)	/* 0x90 */
+	mx28_reg(hw_ocotp_hwcap0)	/* 0xa0 */
+	mx28_reg(hw_ocotp_hwcap1)	/* 0xb0 */
+	mx28_reg(hw_ocotp_hwcap2)	/* 0xc0 */
+	mx28_reg(hw_ocotp_hwcap3)	/* 0xd0 */
+	mx28_reg(hw_ocotp_hwcap4)	/* 0xe0 */
+	mx28_reg(hw_ocotp_hwcap5)	/* 0xf0 */
+	mx28_reg(hw_ocotp_swcap)	/* 0x100 */
+	mx28_reg(hw_ocotp_custcap)	/* 0x110 */
+	mx28_reg(hw_ocotp_lock)		/* 0x120 */
+	mx28_reg(hw_ocotp_ops0)		/* 0x130 */
+	mx28_reg(hw_ocotp_ops1)		/* 0x140 */
+	mx28_reg(hw_ocotp_ops2)		/* 0x150 */
+	mx28_reg(hw_ocotp_ops3)		/* 0x160 */
+	mx28_reg(hw_ocotp_un0)		/* 0x170 */
+	mx28_reg(hw_ocotp_un1)		/* 0x180 */
+	mx28_reg(hw_ocotp_un2)		/* 0x190 */
+	mx28_reg(hw_ocotp_rom0)		/* 0x1a0 */
+	mx28_reg(hw_ocotp_rom1)		/* 0x1b0 */
+	mx28_reg(hw_ocotp_rom2)		/* 0x1c0 */
+	mx28_reg(hw_ocotp_rom3)		/* 0x1d0 */
+	mx28_reg(hw_ocotp_rom4)		/* 0x1e0 */
+	mx28_reg(hw_ocotp_rom5)		/* 0x1f0 */
+	mx28_reg(hw_ocotp_rom6)		/* 0x200 */
+	mx28_reg(hw_ocotp_rom7)		/* 0x210 */
+	mx28_reg(hw_ocotp_srk0)		/* 0x220 */
+	mx28_reg(hw_ocotp_srk1)		/* 0x230 */
+	mx28_reg(hw_ocotp_srk2)		/* 0x240 */
+	mx28_reg(hw_ocotp_srk3)		/* 0x250 */
+	mx28_reg(hw_ocotp_srk4)		/* 0x260 */
+	mx28_reg(hw_ocotp_srk5)		/* 0x270 */
+	mx28_reg(hw_ocotp_srk6)		/* 0x280 */
+	mx28_reg(hw_ocotp_srk7)		/* 0x290 */
+	mx28_reg(hw_ocotp_version)	/* 0x2a0 */
+};
+#endif
+
+#define	OCOTP_CTRL_WR_UNLOCK_MASK		(0xffff << 16)
+#define	OCOTP_CTRL_WR_UNLOCK_OFFSET		16
+#define	OCOTP_CTRL_WR_UNLOCK_KEY		(0x3e77 << 16)
+#define	OCOTP_CTRL_RELOAD_SHADOWS		(1 << 13)
+#define	OCOTP_CTRL_RD_BANK_OPEN			(1 << 12)
+#define	OCOTP_CTRL_ERROR			(1 << 9)
+#define	OCOTP_CTRL_BUSY				(1 << 8)
+#define	OCOTP_CTRL_ADDR_MASK			0x3f
+#define	OCOTP_CTRL_ADDR_OFFSET			0
+
+#define	OCOTP_DATA_DATA_MASK			0xffffffff
+#define	OCOTP_DATA_DATA_OFFSET			0
+
+#define	OCOTP_CUST_BITS_MASK			0xffffffff
+#define	OCOTP_CUST_BITS_OFFSET			0
+
+#define	OCOTP_CRYPTO_BITS_MASK			0xffffffff
+#define	OCOTP_CRYPTO_BITS_OFFSET		0
+
+#define	OCOTP_HWCAP_BITS_MASK			0xffffffff
+#define	OCOTP_HWCAP_BITS_OFFSET			0
+
+#define	OCOTP_SWCAP_BITS_MASK			0xffffffff
+#define	OCOTP_SWCAP_BITS_OFFSET			0
+
+#define	OCOTP_CUSTCAP_RTC_XTAL_32768_PRESENT	(1 << 2)
+#define	OCOTP_CUSTCAP_RTC_XTAL_32000_PRESENT	(1 << 1)
+
+#define	OCOTP_LOCK_ROM7				(1 << 31)
+#define	OCOTP_LOCK_ROM6				(1 << 30)
+#define	OCOTP_LOCK_ROM5				(1 << 29)
+#define	OCOTP_LOCK_ROM4				(1 << 28)
+#define	OCOTP_LOCK_ROM3				(1 << 27)
+#define	OCOTP_LOCK_ROM2				(1 << 26)
+#define	OCOTP_LOCK_ROM1				(1 << 25)
+#define	OCOTP_LOCK_ROM0				(1 << 24)
+#define	OCOTP_LOCK_HWSW_SHADOW_ALT		(1 << 23)
+#define	OCOTP_LOCK_CRYPTODCP_ALT		(1 << 22)
+#define	OCOTP_LOCK_CRYPTOKEY_ALT		(1 << 21)
+#define	OCOTP_LOCK_PIN				(1 << 20)
+#define	OCOTP_LOCK_OPS				(1 << 19)
+#define	OCOTP_LOCK_UN2				(1 << 18)
+#define	OCOTP_LOCK_UN1				(1 << 17)
+#define	OCOTP_LOCK_UN0				(1 << 16)
+#define	OCOTP_LOCK_SRK				(1 << 15)
+#define	OCOTP_LOCK_UNALLOCATED_MASK		(0x7 << 12)
+#define	OCOTP_LOCK_UNALLOCATED_OFFSET		12
+#define	OCOTP_LOCK_SRK_SHADOW			(1 << 11)
+#define	OCOTP_LOCK_ROM_SHADOW			(1 << 10)
+#define	OCOTP_LOCK_CUSTCAP			(1 << 9)
+#define	OCOTP_LOCK_HWSW				(1 << 8)
+#define	OCOTP_LOCK_CUSTCAP_SHADOW		(1 << 7)
+#define	OCOTP_LOCK_HWSW_SHADOW			(1 << 6)
+#define	OCOTP_LOCK_CRYPTODCP			(1 << 5)
+#define	OCOTP_LOCK_CRYPTOKEY			(1 << 4)
+#define	OCOTP_LOCK_CUST3			(1 << 3)
+#define	OCOTP_LOCK_CUST2			(1 << 2)
+#define	OCOTP_LOCK_CUST1			(1 << 1)
+#define	OCOTP_LOCK_CUST0			(1 << 0)
+
+#define	OCOTP_OPS_BITS_MASK			0xffffffff
+#define	OCOTP_OPS_BITS_OFFSET			0
+
+#define	OCOTP_UN_BITS_MASK			0xffffffff
+#define	OCOTP_UN_BITS_OFFSET			0
+
+#define	OCOTP_ROM_BOOT_MODE_MASK		(0xff << 24)
+#define	OCOTP_ROM_BOOT_MODE_OFFSET		24
+#define	OCOTP_ROM_SD_MMC_MODE_MASK		(0x3 << 22)
+#define	OCOTP_ROM_SD_MMC_MODE_OFFSET		22
+#define	OCOTP_ROM_SD_POWER_GATE_GPIO_MASK	(0x3 << 20)
+#define	OCOTP_ROM_SD_POWER_GATE_GPIO_OFFSET	20
+#define	OCOTP_ROM_SD_POWER_UP_DELAY_MASK	(0x3f << 14)
+#define	OCOTP_ROM_SD_POWER_UP_DELAY_OFFSET	14
+#define	OCOTP_ROM_SD_BUS_WIDTH_MASK		(0x3 << 12)
+#define	OCOTP_ROM_SD_BUS_WIDTH_OFFSET		12
+#define	OCOTP_ROM_SSP_SCK_INDEX_MASK		(0xf << 8)
+#define	OCOTP_ROM_SSP_SCK_INDEX_OFFSET		8
+#define	OCOTP_ROM_EMMC_USE_DDR			(1 << 7)
+#define	OCOTP_ROM_DISABLE_SPI_NOR_FAST_READ	(1 << 6)
+#define	OCOTP_ROM_ENABLE_USB_BOOT_SERIAL_NUM	(1 << 5)
+#define	OCOTP_ROM_ENABLE_UNENCRYPTED_BOOT	(1 << 4)
+#define	OCOTP_ROM_SD_MBR_BOOT			(1 << 3)
+
+#define	OCOTP_SRK_BITS_MASK			0xffffffff
+#define	OCOTP_SRK_BITS_OFFSET			0
+
+#define	OCOTP_VERSION_MAJOR_MASK		(0xff << 24)
+#define	OCOTP_VERSION_MAJOR_OFFSET		24
+#define	OCOTP_VERSION_MINOR_MASK		(0xff << 16)
+#define	OCOTP_VERSION_MINOR_OFFSET		16
+#define	OCOTP_VERSION_STEP_MASK			0xffff
+#define	OCOTP_VERSION_STEP_OFFSET		0
+
+#endif /* __MX28_REGS_OCOTP_H__ */