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+/*
+ * Copyright (c) 2012 The Chromium OS Authors.
+ *
+ * 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
+ */
+
+#ifndef __ASM_ARCH_EXYNOS_SPL_H__
+#define __ASM_ARCH_EXYNOS_SPL_H__
+
+#include <asm/arch-exynos/dmc.h>
+
+enum boot_mode {
+ /*
+ * Assign the OM pin values for respective boot modes.
+ * Exynos4 does not support spi boot and the mmc boot OM
+ * pin values are the same across Exynos4 and Exynos5.
+ */
+ BOOT_MODE_MMC = 4,
+ BOOT_MODE_SERIAL = 20,
+ /* Boot based on Operating Mode pin settings */
+ BOOT_MODE_OM = 32,
+ BOOT_MODE_USB, /* Boot using USB download */
+};
+
+#ifndef __ASSEMBLY__
+/* Parameters of early board initialization in SPL */
+struct spl_machine_param {
+ /* Add fields as and when required */
+ u32 signature;
+ u32 version; /* Version number */
+ u32 size; /* Size of block */
+ /**
+ * Parameters we expect, in order, terminated with \0. Each parameter
+ * is a single character representing one 32-bit word in this
+ * structure.
+ *
+ * Valid characters in this string are:
+ *
+ * Code Name
+ * v mem_iv_size
+ * m mem_type
+ * u uboot_size
+ * b boot_source
+ * f frequency_mhz (memory frequency in MHz)
+ * a ARM clock frequency in MHz
+ * s serial base address
+ * i i2c base address for early access (meant for PMIC)
+ * r board rev GPIO numbers used to read board revision
+ * (lower halfword=bit 0, upper=bit 1)
+ * M Memory Manufacturer name
+ * \0 termination
+ */
+ char params[12]; /* Length must be word-aligned */
+ u32 mem_iv_size; /* Memory channel interleaving size */
+ enum ddr_mode mem_type; /* Type of on-board memory */
+ /*
+ * U-boot size - The iROM mmc copy function used by the SPL takes a
+ * block count paramter to describe the u-boot size unlike the spi
+ * boot copy function which just uses the u-boot size directly. Align
+ * the u-boot size to block size (512 bytes) when populating the SPL
+ * table only for mmc boot.
+ */
+ u32 uboot_size;
+ enum boot_mode boot_source; /* Boot device */
+ enum mem_manuf mem_manuf; /* Memory Manufacturer */
+ unsigned frequency_mhz; /* Frequency of memory in MHz */
+ unsigned arm_freq_mhz; /* ARM Frequency in MHz */
+ u32 serial_base; /* Serial base address */
+ u32 i2c_base; /* i2c base address */
+} __attribute__((__packed__));
+#endif
+
+/**
+ * Validate signature and return a pointer to the parameter table. If the
+ * signature is invalid, call panic() and never return.
+ *
+ * @return pointer to the parameter table if signature matched or never return.
+ */
+struct spl_machine_param *spl_get_machine_params(void);
+
+#endif /* __ASM_ARCH_EXYNOS_SPL_H__ */