/* SPDX-License-Identifier: GPL-2.0+ */ /* * Copyright (c) 2012 The Chromium OS Authors. */ #ifndef __ASM_ARCH_EXYNOS_SPL_H__ #define __ASM_ARCH_EXYNOS_SPL_H__ #include #include #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; unsigned boot_source; /* Boot device */ 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 */ u32 board_rev_gpios; /* Board revision GPIOs */ enum mem_manuf mem_manuf; /* Memory Manufacturer */ } __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__ */