1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * (C) Copyright 2000-2009
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
6 * Copy the startup prototype, previously defined in common.h
7 * Copyright (C) 2018, STMicroelectronics - All Rights Reserved
13 #include <linux/types.h>
15 #ifndef __ASSEMBLY__ /* put C only stuff in this section */
21 /* common/board_f.c */
22 void board_init_f(ulong dummy);
25 * arch_cpu_init() - basic cpu-dependent setup for an architecture
27 * This is called after early malloc is available. It should handle any
28 * CPU- or SoC- specific init needed to continue the init sequence. See
29 * board_f.c for where it is called. If this is not provided, a default
30 * version (which does nothing) will be used.
32 * Return: 0 on success, otherwise error
34 int arch_cpu_init(void);
37 * arch_cpu_init_dm() - init CPU after driver model is available
39 * This is called immediately after driver model is available before
40 * relocation. This is similar to arch_cpu_init() but is able to reference
43 * Return: 0 if OK, -ve on error
45 int arch_cpu_init_dm(void);
48 * mach_cpu_init() - SoC/machine dependent CPU setup
50 * This is called after arch_cpu_init(). It should handle any
51 * SoC or machine specific init needed to continue the init sequence. See
52 * board_f.c for where it is called. If this is not provided, a default
53 * version (which does nothing) will be used.
55 * Return: 0 on success, otherwise error
57 int mach_cpu_init(void);
60 * arch_fsp_init() - perform firmware support package init
62 * Where U-Boot relies on binary blobs to handle part of the system init, this
63 * function can be used to set up the blobs. This is used on some Intel
68 int arch_fsp_init(void);
71 * arch_fsp_init() - perform post-relocation firmware support package init
73 * Where U-Boot relies on binary blobs to handle part of the system init, this
74 * function can be used to set up the blobs. This is used on some Intel
79 int arch_fsp_init_r(void);
84 * dram_init_banksize() - Set up DRAM bank sizes
86 * This can be implemented by boards to set up the DRAM bank information in
87 * gd->bd->bi_dram(). It is called just before relocation, after dram_init()
90 * If this is not provided, a default implementation will try to set up a
91 * single bank. It will do this if CONFIG_NR_DRAM_BANKS and
92 * CONFIG_SYS_SDRAM_BASE are set. The bank will have a start address of
93 * CONFIG_SYS_SDRAM_BASE and the size will be determined by a call to
94 * get_effective_memsize().
96 * Return: 0 if OK, -ve on error
98 int dram_init_banksize(void);
101 * arch_reserve_stacks() - Reserve all necessary stacks
103 * This is used in generic board init sequence in common/board_f.c. Each
104 * architecture could provide this function to tailor the required stacks.
106 * On entry gd->start_addr_sp is pointing to the suggested top of the stack.
107 * The callee ensures gd->start_add_sp is 16-byte aligned, so architectures
108 * require only this can leave it untouched.
110 * On exit gd->start_addr_sp and gd->irq_sp should be set to the respective
111 * positions of the stack. The stack pointer(s) will be set to this later.
112 * gd->irq_sp is only required, if the architecture needs it.
114 * Return: 0 if no error
116 int arch_reserve_stacks(void);
119 * init_cache_f_r() - Turn on the cache in preparation for relocation
121 * Return: 0 if OK, -ve on error
123 int init_cache_f_r(void);
125 #if !CONFIG_IS_ENABLED(CPU)
127 * print_cpuinfo() - Display information about the CPU
129 * Return: 0 if OK, -ve on error
131 int print_cpuinfo(void);
133 int timer_init(void);
134 int reserve_mmu(void);
135 int misc_init_f(void);
137 #if defined(CONFIG_DTB_RESELECT)
138 int embedded_dtb_select(void);
141 /* common/init/board_init.c */
142 extern ulong monitor_flash_len;
145 * ulong board_init_f_alloc_reserve - allocate reserved area
146 * @top: top of the reserve area, growing down.
148 * This function is called by each architecture very early in the start-up
149 * code to allow the C runtime to reserve space on the stack for writable
150 * 'globals' such as GD and the malloc arena.
152 * Return: bottom of reserved area
154 ulong board_init_f_alloc_reserve(ulong top);
157 * board_init_f_init_reserve - initialize the reserved area(s)
158 * @base: top from which reservation was done
160 * This function is called once the C runtime has allocated the reserved
161 * area on the stack. It must initialize the GD at the base of that area.
163 void board_init_f_init_reserve(ulong base);
168 * arch_setup_gd() - Set up the global_data pointer
169 * @gd_ptr: Pointer to global data
171 * This pointer is special in some architectures and cannot easily be assigned
172 * to. For example on x86 it is implemented by adding a specific record to its
173 * Global Descriptor Table! So we we provide a function to carry out this task.
174 * For most architectures this can simply be:
178 void arch_setup_gd(struct global_data *gd_ptr);
180 /* common/board_r.c */
181 void board_init_r(struct global_data *id, ulong dest_addr)
182 __attribute__ ((noreturn));
184 int cpu_init_r(void);
185 int last_stage_init(void);
186 int mac_read_from_eeprom(void);
187 int set_cpu_clk_info(void);
188 int update_flash_size(int flash_size);
189 int arch_early_init_r(void);
191 int misc_init_r(void);
192 #if defined(CONFIG_VID)
193 int init_func_vid(void);
196 /* common/board_info.c */
197 int checkboard(void);
198 int show_board_info(void);
201 * Get the uppermost pointer that is valid to access
203 * Some systems may not map all of their address space. This function allows
204 * boards to indicate what their highest support pointer value is for DRAM
207 * @param total_size Size of U-Boot (unused?)
209 ulong board_get_usable_ram_top(ulong total_size);
211 int board_early_init_f(void);
213 /* manipulate the U-Boot fdt before its relocation */
214 int board_fix_fdt(void *rw_fdt_blob);
215 int board_late_init(void);
216 int board_postclk_init(void); /* after clocks/timebase, before env/serial */
217 int board_early_init_r(void);
219 /* TODO(sjg@chromium.org): Drop this when DM_PCI migration is completed */
220 void pci_init_board(void);
222 void trap_init(unsigned long reloc_addr);
224 #endif /* __ASSEMBLY__ */
225 /* Put only stuff here that the assembler can digest */
227 #endif /* __INIT_H_ */