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