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