LXR uboot/arch/x86/include/asm/u-boot-x86.h

   1/* SPDX-License-Identifier: GPL-2.0+ */
   2/*
   3 * (C) Copyright 2002
   4 * Daniel Engström, Omicron Ceti AB, daniel@omicron.se.
   5 */
   6
   7#ifndef _U_BOOT_I386_H_
   8#define _U_BOOT_I386_H_ 1
   9
  10struct global_data;
  11
  12extern char gdt_rom[];
  13
  14/* cpu/.../cpu.c */
  15int arch_cpu_init(void);
  16
  17/**
  18 * x86_cpu_init_f() - Set up basic features of the x86 CPU
  19 *
  20 * 0 on success, -ve on error
  21 */
  22int x86_cpu_init_f(void);
  23
  24/**
  25 * x86_cpu_reinit_f() - Set up the CPU a second time
  26 *
  27 * Once cpu_init_f() has been called (e.g. in SPL) we should not call it
  28 * again (e.g. in U-Boot proper) since it sets up the state from scratch.
  29 * Call this function in later phases of U-Boot instead. It reads the CPU
  30 * identify so that CPU functions can be used correctly, but does not change
  31 * anything.
  32 *
  33 * @return 0 (indicating success, to mimic cpu_init_f())
  34 */
  35int x86_cpu_reinit_f(void);
  36
  37/**
  38 * x86_cpu_init_tpl() - Do the minimum possible CPU init
  39 *
  40 * This just sets up the CPU features and figured out the identity
  41 *
  42 * @return 0 (indicating success, to mimic cpu_init_f())
  43 */
  44int x86_cpu_init_tpl(void);
  45
  46/**
  47 * cpu_reinit_fpu() - Reinit the FPU if something is wrong with it
  48 *
  49 * The FSP-M code can leave registers in use in the FPU. This functions reinits
  50 * it so that the FPU can be used safely
  51 */
  52void cpu_reinit_fpu(void);
  53
  54int cpu_init_f(void);
  55void setup_gdt(struct global_data *id, u64 *gdt_addr);
  56/*
  57 * Setup FSP execution environment GDT to use the one we used in
  58 * arch/x86/cpu/start16.S and reload the segment registers.
  59 */
  60void setup_fsp_gdt(void);
  61int init_cache(void);
  62int cleanup_before_linux(void);
  63
  64/* cpu/.../timer.c */
  65void timer_isr(void *);
  66typedef void (timer_fnc_t) (void);
  67int register_timer_isr (timer_fnc_t *isr_func);
  68unsigned long get_tbclk_mhz(void);
  69void timer_set_base(uint64_t base);
  70int i8254_init(void);
  71
  72/* cpu/.../interrupts.c */
  73int cpu_init_interrupts(void);
  74
  75int cleanup_before_linux(void);
  76int x86_cleanup_before_linux(void);
  77void x86_enable_caches(void);
  78void x86_disable_caches(void);
  79int x86_init_cache(void);
  80ulong board_get_usable_ram_top(ulong total_size);
  81int default_print_cpuinfo(void);
  82
  83/* Set up a UART which can be used with printch(), printhex8(), etc. */
  84int setup_internal_uart(int enable);
  85
  86void isa_unmap_rom(u32 addr);
  87u32 isa_map_rom(u32 bus_addr, int size);
  88
  89/* arch/x86/lib/... */
  90int video_bios_init(void);
  91
  92/* arch/x86/lib/fsp1,2/... */
  93
  94/**
  95 * fsp_save_s3_stack() - save stack address to CMOS for next S3 boot
  96 *
  97 * At the end of pre-relocation phase, save the new stack address
  98 * to CMOS and use it as the stack on next S3 boot for fsp_init()
  99 * continuation function.
 100 *
 101 * @return:     0 if OK, -ve on error
 102 */
 103int fsp_save_s3_stack(void);
 104
 105void    board_init_f_r_trampoline(ulong) __attribute__ ((noreturn));
 106void    board_init_f_r(void) __attribute__ ((noreturn));
 107
 108int arch_misc_init(void);
 109
 110/* Read the time stamp counter */
 111static inline __attribute__((no_instrument_function)) uint64_t rdtsc(void)
 112{
 113        uint32_t high, low;
 114        __asm__ __volatile__("rdtsc" : "=a" (low), "=d" (high));
 115        return (((uint64_t)high) << 32) | low;
 116}
 117
 118/* board/... */
 119void timer_set_tsc_base(uint64_t new_base);
 120uint64_t timer_get_tsc(void);
 121
 122void quick_ram_check(void);
 123
 124#define PCI_VGA_RAM_IMAGE_START         0xc0000
 125
 126#endif  /* _U_BOOT_I386_H_ */
 127