217 lines
6.0 KiB
C
217 lines
6.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* (C) Copyright 2000-2009
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* Copy the startup prototype, previously defined in common.h
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* Copyright (C) 2018, STMicroelectronics - All Rights Reserved
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*/
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#ifndef __INIT_H_
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#define __INIT_H_ 1
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#include <linux/types.h>
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#ifndef __ASSEMBLY__ /* put C only stuff in this section */
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/*
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* Function Prototypes
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*/
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/* common/board_f.c */
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void board_init_f(ulong dummy);
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/**
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* arch_cpu_init() - basic cpu-dependent setup for an architecture
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*
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* This is called after early malloc is available. It should handle any
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* CPU- or SoC- specific init needed to continue the init sequence. See
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* board_f.c for where it is called. If this is not provided, a default
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* version (which does nothing) will be used.
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*
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* Return: 0 on success, otherwise error
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*/
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int arch_cpu_init(void);
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/**
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* arch_cpu_init_dm() - init CPU after driver model is available
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*
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* This is called immediately after driver model is available before
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* relocation. This is similar to arch_cpu_init() but is able to reference
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* devices
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*
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* Return: 0 if OK, -ve on error
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*/
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int arch_cpu_init_dm(void);
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/**
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* mach_cpu_init() - SoC/machine dependent CPU setup
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*
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* This is called after arch_cpu_init(). It should handle any
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* SoC or machine specific init needed to continue the init sequence. See
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* board_f.c for where it is called. If this is not provided, a default
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* version (which does nothing) will be used.
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*
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* Return: 0 on success, otherwise error
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*/
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int mach_cpu_init(void);
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/**
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* arch_fsp_init() - perform firmware support package init
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*
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* Where U-Boot relies on binary blobs to handle part of the system init, this
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* function can be used to set up the blobs. This is used on some Intel
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* platforms.
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*
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* Return: 0
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*/
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int arch_fsp_init(void);
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int dram_init(void);
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/**
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* dram_init_banksize() - Set up DRAM bank sizes
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*
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* This can be implemented by boards to set up the DRAM bank information in
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* gd->bd->bi_dram(). It is called just before relocation, after dram_init()
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* is called.
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*
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* If this is not provided, a default implementation will try to set up a
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* single bank. It will do this if CONFIG_NR_DRAM_BANKS and
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* CONFIG_SYS_SDRAM_BASE are set. The bank will have a start address of
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* CONFIG_SYS_SDRAM_BASE and the size will be determined by a call to
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* get_effective_memsize().
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*
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* Return: 0 if OK, -ve on error
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*/
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int dram_init_banksize(void);
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/**
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* arch_reserve_stacks() - Reserve all necessary stacks
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*
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* This is used in generic board init sequence in common/board_f.c. Each
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* architecture could provide this function to tailor the required stacks.
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*
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* On entry gd->start_addr_sp is pointing to the suggested top of the stack.
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* The callee ensures gd->start_add_sp is 16-byte aligned, so architectures
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* require only this can leave it untouched.
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*
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* On exit gd->start_addr_sp and gd->irq_sp should be set to the respective
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* positions of the stack. The stack pointer(s) will be set to this later.
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* gd->irq_sp is only required, if the architecture needs it.
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*
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* Return: 0 if no error
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*/
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int arch_reserve_stacks(void);
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/**
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* init_cache_f_r() - Turn on the cache in preparation for relocation
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*
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* Return: 0 if OK, -ve on error
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*/
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int init_cache_f_r(void);
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#if !CONFIG_IS_ENABLED(CPU)
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/**
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* print_cpuinfo() - Display information about the CPU
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*
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* Return: 0 if OK, -ve on error
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*/
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int print_cpuinfo(void);
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#endif
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int timer_init(void);
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int reserve_mmu(void);
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int misc_init_f(void);
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#if defined(CONFIG_DTB_RESELECT)
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int embedded_dtb_select(void);
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#endif
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/* common/init/board_init.c */
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extern ulong monitor_flash_len;
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/**
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* ulong board_init_f_alloc_reserve - allocate reserved area
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* @top: top of the reserve area, growing down.
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*
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* This function is called by each architecture very early in the start-up
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* code to allow the C runtime to reserve space on the stack for writable
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* 'globals' such as GD and the malloc arena.
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*
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* Return: bottom of reserved area
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*/
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ulong board_init_f_alloc_reserve(ulong top);
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/**
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* board_init_f_init_reserve - initialize the reserved area(s)
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* @base: top from which reservation was done
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*
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* This function is called once the C runtime has allocated the reserved
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* area on the stack. It must initialize the GD at the base of that area.
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*/
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void board_init_f_init_reserve(ulong base);
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struct global_data;
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/**
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* arch_setup_gd() - Set up the global_data pointer
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* @gd_ptr: Pointer to global data
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*
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* This pointer is special in some architectures and cannot easily be assigned
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* to. For example on x86 it is implemented by adding a specific record to its
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* Global Descriptor Table! So we we provide a function to carry out this task.
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* For most architectures this can simply be:
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*
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* gd = gd_ptr;
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*/
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void arch_setup_gd(struct global_data *gd_ptr);
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/* common/board_r.c */
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void board_init_r(struct global_data *id, ulong dest_addr)
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__attribute__ ((noreturn));
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int cpu_init_r(void);
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int last_stage_init(void);
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int mac_read_from_eeprom(void);
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int set_cpu_clk_info(void);
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int update_flash_size(int flash_size);
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int arch_early_init_r(void);
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void pci_init(void);
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int misc_init_r(void);
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#if defined(CONFIG_VID)
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int init_func_vid(void);
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#endif
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/* common/board_info.c */
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int checkboard(void);
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int show_board_info(void);
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/**
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* Get the uppermost pointer that is valid to access
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*
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* Some systems may not map all of their address space. This function allows
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* boards to indicate what their highest support pointer value is for DRAM
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* access.
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*
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* @param total_size Size of U-Boot (unused?)
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*/
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ulong board_get_usable_ram_top(ulong total_size);
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int board_early_init_f(void);
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/* manipulate the U-Boot fdt before its relocation */
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int board_fix_fdt(void *rw_fdt_blob);
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int board_late_init(void);
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int board_postclk_init(void); /* after clocks/timebase, before env/serial */
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int board_early_init_r(void);
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/* TODO(sjg@chromium.org): Drop this when DM_PCI migration is completed */
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void pci_init_board(void);
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void trap_init(unsigned long reloc_addr);
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#endif /* __ASSEMBLY__ */
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/* Put only stuff here that the assembler can digest */
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#endif /* __INIT_H_ */
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