1 // Basic x86 asm functions and function defs.
3 // Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net>
5 // This file may be distributed under the terms of the GNU GPLv3 license.
9 #include "types.h" // u32
11 static inline void irq_disable(void)
13 asm volatile("cli": : :"memory");
16 static inline void irq_enable(void)
18 asm volatile("sti": : :"memory");
21 static inline unsigned long irq_save(void)
24 asm volatile("pushfl ; popl %0" : "=g" (flags));
29 static inline void irq_restore(unsigned long flags)
31 asm volatile("pushl %0 ; popfl" : : "g" (flags) : "memory", "cc");
34 static inline void cpu_relax(void)
36 asm volatile("rep ; nop": : :"memory");
39 static inline void nop(void)
44 static inline void hlt(void)
49 static inline void wbinvd(void)
51 asm volatile("wbinvd");
54 static inline void cpuid(u32 index, u32 *eax, u32 *ebx, u32 *ecx, u32 *edx)
57 : "=a" (*eax), "=b" (*ebx), "=c" (*ecx), "=d" (*edx)
61 static inline u64 rdtscll(void)
64 asm volatile("rdtsc" : "=A" (val));
69 inline u32 stack_hop(u32 eax, u32 edx, u32 ecx, void *func);
70 u8 checksum(u8 *far_data, u32 len);
71 void *memset(void *s, int c, size_t n);
72 void *memcpy(void *d1, const void *s1, size_t len);
73 void *memcpy_far(void *far_d1, const void *far_s1, size_t len);
74 void *memmove(void *d, const void *s, size_t len);
76 inline void call16(struct bregs *callregs);
77 inline void call16big(struct bregs *callregs);
78 inline void __call16_int(struct bregs *callregs, u16 offset);
79 #define call16_int(nr, callregs) do { \
80 extern void irq_trampoline_ ##nr (); \
81 __call16_int((callregs), (u32)&irq_trampoline_ ##nr ); \
83 inline void call16_simpint(int nr, u32 *eax, u32 *flags);
86 void debug_serial_setup();
87 void BX_PANIC(const char *fmt, ...)
88 __attribute__ ((format (printf, 1, 2)))
89 __attribute__ ((noreturn));
90 void printf(const char *fmt, ...)
91 __attribute__ ((format (printf, 1, 2)));
92 void __dprintf(const char *fmt, ...)
93 __attribute__ ((format (printf, 1, 2)));
94 #define dprintf(lvl, fmt, args...) do { \
95 if (CONFIG_DEBUG_LEVEL && (lvl) <= CONFIG_DEBUG_LEVEL) \
96 __dprintf((fmt) , ##args ); \
98 void __debug_enter(struct bregs *regs, const char *fname);
99 void __debug_stub(struct bregs *regs, int lineno, const char *fname);
100 void __debug_isr(const char *fname);
101 #define debug_enter(regs, lvl) do { \
102 if ((lvl) && (lvl) <= CONFIG_DEBUG_LEVEL) \
103 __debug_enter((regs), __func__); \
105 #define debug_isr(lvl) do { \
106 if ((lvl) && (lvl) <= CONFIG_DEBUG_LEVEL) \
107 __debug_isr(__func__); \
109 #define debug_stub(regs) \
110 __debug_stub((regs), __LINE__, __func__)
114 void handle_15c2(struct bregs *regs);
121 extern u64 RamSizeOver4G;
130 void ndelay(u32 count);
131 void udelay(u32 count);
132 void mdelay(u32 count);
133 u64 calc_future_tsc(u32 msecs);
134 void handle_1583(struct bregs *regs);
135 void handle_1586(struct bregs *regs);
138 void VISIBLE16 handle_1553(struct bregs *regs);
141 void handle_1ab1(struct bregs *regs);
144 void make_bios_writable();
145 void make_bios_readonly();
148 void pci_bios_setup(void);
155 void smp_probe_setup(void);
158 void mptable_init(void);
161 void smbios_init(void);
164 void coreboot_fill_map();
171 void optionrom_setup();
177 #define PNP_SIGNATURE 0x506e5024 // $PnP
178 u16 get_pnp_offset();
182 void mtrr_setup(void);
185 void reset_vector() __attribute__ ((noreturn));