3 * Daniel Engström, Omicron Ceti AB, daniel@omicron.se.
5 * SPDX-License-Identifier: GPL-2.0+
8 #ifndef _U_BOOT_I386_H_
9 #define _U_BOOT_I386_H_ 1
11 extern char gdt_rom[];
14 int arch_cpu_init(void);
15 int x86_cpu_init_f(void);
17 void init_gd(gd_t *id, u64 *gdt_addr);
18 void setup_gdt(gd_t *id, u64 *gdt_addr);
20 * Setup FSP execution environment GDT to use the one we used in
21 * arch/x86/cpu/start16.S and reload the segment registers.
23 void setup_fsp_gdt(void);
25 int cleanup_before_linux(void);
28 void timer_isr(void *);
29 typedef void (timer_fnc_t) (void);
30 int register_timer_isr (timer_fnc_t *isr_func);
31 unsigned long get_tbclk_mhz(void);
32 void timer_set_base(uint64_t base);
33 int pcat_timer_init(void);
35 /* cpu/.../interrupts.c */
36 int cpu_init_interrupts(void);
38 int cleanup_before_linux(void);
39 int x86_cleanup_before_linux(void);
40 void x86_enable_caches(void);
41 void x86_disable_caches(void);
42 int x86_init_cache(void);
43 void reset_cpu(ulong addr);
44 ulong board_get_usable_ram_top(ulong total_size);
45 void dram_init_banksize(void);
46 int default_print_cpuinfo(void);
48 /* Set up a UART which can be used with printch(), printhex8(), etc. */
49 int setup_early_uart(void);
51 void setup_pcat_compatibility(void);
53 void isa_unmap_rom(u32 addr);
54 u32 isa_map_rom(u32 bus_addr, int size);
56 /* arch/x86/lib/... */
57 int video_bios_init(void);
59 /* arch/x86/lib/fsp/... */
60 int x86_fsp_init(void);
62 void board_init_f_r_trampoline(ulong) __attribute__ ((noreturn));
63 void board_init_f_r(void) __attribute__ ((noreturn));
65 int arch_misc_init(void);
67 /* Read the time stamp counter */
68 static inline __attribute__((no_instrument_function)) uint64_t rdtsc(void)
71 __asm__ __volatile__("rdtsc" : "=a" (low), "=d" (high));
72 return (((uint64_t)high) << 32) | low;
76 void timer_set_tsc_base(uint64_t new_base);
77 uint64_t timer_get_tsc(void);
79 void quick_ram_check(void);
81 int x86_init_cpus(void);
83 #define PCI_VGA_RAM_IMAGE_START 0xc0000
85 #endif /* _U_BOOT_I386_H_ */