1 /*
2  * Copyright (c) 2012 The Chromium OS Authors.
3  *
4  * SPDX-License-Identifier:	GPL-2.0+
5  */
6 
7 #ifndef __ASM_ARCH_EXYNOS_SPL_H__
8 #define __ASM_ARCH_EXYNOS_SPL_H__
9 
10 #include <asm/arch/dmc.h>
11 #include <asm/arch/power.h>
12 
13 #ifndef __ASSEMBLY__
14 /* Parameters of early board initialization in SPL */
15 struct spl_machine_param {
16 	/* Add fields as and when required */
17 	u32		signature;
18 	u32		version;	/* Version number */
19 	u32		size;		/* Size of block */
20 	/**
21 	 * Parameters we expect, in order, terminated with \0. Each parameter
22 	 * is a single character representing one 32-bit word in this
23 	 * structure.
24 	 *
25 	 * Valid characters in this string are:
26 	 *
27 	 * Code		Name
28 	 * v		mem_iv_size
29 	 * m		mem_type
30 	 * u		uboot_size
31 	 * b		boot_source
32 	 * f		frequency_mhz (memory frequency in MHz)
33 	 * a		ARM clock frequency in MHz
34 	 * s		serial base address
35 	 * i		i2c base address for early access (meant for PMIC)
36 	 * r		board rev GPIO numbers used to read board revision
37 	 *			(lower halfword=bit 0, upper=bit 1)
38 	 * M		Memory Manufacturer name
39 	 * \0		termination
40 	 */
41 	char		params[12];	/* Length must be word-aligned */
42 	u32		mem_iv_size;	/* Memory channel interleaving size */
43 	enum ddr_mode	mem_type;	/* Type of on-board memory */
44 	/*
45 	 * U-boot size - The iROM mmc copy function used by the SPL takes a
46 	 * block count paramter to describe the u-boot size unlike the spi
47 	 * boot copy function which just uses the u-boot size directly. Align
48 	 * the u-boot size to block size (512 bytes) when populating the SPL
49 	 * table only for mmc boot.
50 	 */
51 	u32		uboot_size;
52 	unsigned	boot_source;	/* Boot device */
53 	unsigned	frequency_mhz;	/* Frequency of memory in MHz */
54 	unsigned	arm_freq_mhz;	/* ARM Frequency in MHz */
55 	u32		serial_base;	/* Serial base address */
56 	u32		i2c_base;	/* i2c base address */
57 	u32		board_rev_gpios;	/* Board revision GPIOs */
58 	enum mem_manuf	mem_manuf;	/* Memory Manufacturer */
59 } __attribute__((__packed__));
60 #endif
61 
62 /**
63  * Validate signature and return a pointer to the parameter table.  If the
64  * signature is invalid, call panic() and never return.
65  *
66  * @return pointer to the parameter table if signature matched or never return.
67  */
68 struct spl_machine_param *spl_get_machine_params(void);
69 
70 #endif /* __ASM_ARCH_EXYNOS_SPL_H__ */
71