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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__ */
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