1 /* 2 * (C) Copyright 2002 3 * Daniel Engström, Omicron Ceti AB, daniel@omicron.se. 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 #ifndef _U_BOOT_I386_H_ 9 #define _U_BOOT_I386_H_ 1 10 11 extern char gdt_rom[]; 12 13 /* cpu/.../cpu.c */ 14 int arch_cpu_init(void); 15 int x86_cpu_init_f(void); 16 int cpu_init_f(void); 17 void init_gd(gd_t *id, u64 *gdt_addr); 18 void setup_gdt(gd_t *id, u64 *gdt_addr); 19 /* 20 * Setup FSP execution environment GDT to use the one we used in 21 * arch/x86/cpu/start16.S and reload the segment registers. 22 */ 23 void setup_fsp_gdt(void); 24 int init_cache(void); 25 int cleanup_before_linux(void); 26 27 /* cpu/.../timer.c */ 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); 34 35 /* cpu/.../interrupts.c */ 36 int cpu_init_interrupts(void); 37 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); 47 48 /* Set up a UART which can be used with printch(), printhex8(), etc. */ 49 int setup_early_uart(void); 50 51 void setup_pcat_compatibility(void); 52 53 void isa_unmap_rom(u32 addr); 54 u32 isa_map_rom(u32 bus_addr, int size); 55 56 /* arch/x86/lib/... */ 57 int video_bios_init(void); 58 59 /* arch/x86/lib/fsp/... */ 60 int x86_fsp_init(void); 61 62 void board_init_f_r_trampoline(ulong) __attribute__ ((noreturn)); 63 void board_init_f_r(void) __attribute__ ((noreturn)); 64 65 int arch_misc_init(void); 66 67 /* Read the time stamp counter */ 68 static inline __attribute__((no_instrument_function)) uint64_t rdtsc(void) 69 { 70 uint32_t high, low; 71 __asm__ __volatile__("rdtsc" : "=a" (low), "=d" (high)); 72 return (((uint64_t)high) << 32) | low; 73 } 74 75 /* board/... */ 76 void timer_set_tsc_base(uint64_t new_base); 77 uint64_t timer_get_tsc(void); 78 79 void quick_ram_check(void); 80 81 int x86_init_cpus(void); 82 83 #define PCI_VGA_RAM_IMAGE_START 0xc0000 84 85 #endif /* _U_BOOT_I386_H_ */ 86