1 // Basic x86 asm functions and function defs.
3 // Copyright (C) 2008,2009 Kevin O'Connor <kevin@koconnor.net>
5 // This file may be distributed under the terms of the GNU LGPLv3 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));
68 #define call16_simpint(nr, peax, pflags) do { \
69 extern void __force_link_error__call16_simpint_only_in_16bit_mode(); \
71 __force_link_error__call16_simpint_only_in_16bit_mode(); \
80 : "+a"(*peax), "=r"(*pflags) \
86 inline u32 stack_hop(u32 eax, u32 edx, u32 ecx, void *func);
87 u8 checksum_far(u16 buf_seg, void *buf_far, u32 len);
88 u8 checksum(void *buf, u32 len);
89 int memcmp(const void *s1, const void *s2, size_t n);
90 size_t strlen(const char *s);
91 int strcmp(const char *s1, const char *s2);
92 inline void memset_far(u16 d_seg, void *d_far, u8 c, size_t len);
93 inline void memset16_far(u16 d_seg, void *d_far, u16 c, size_t len);
94 void *memset(void *s, int c, size_t n);
95 #define memcpy __builtin_memcpy
96 inline void memcpy_far(u16 d_seg, void *d_far
97 , u16 s_seg, const void *s_far, size_t len);
98 void *memmove(void *d, const void *s, size_t len);
99 char *strtcpy(char *dest, const char *src, size_t len);
101 inline void call16(struct bregs *callregs);
102 inline void call16big(struct bregs *callregs);
103 inline void __call16_int(struct bregs *callregs, u16 offset);
104 #define call16_int(nr, callregs) do { \
105 extern void irq_trampoline_ ##nr (); \
106 __call16_int((callregs), (u32)&irq_trampoline_ ##nr ); \
108 void usleep(u32 usec);
109 int get_keystroke(int msec);
112 void debug_serial_setup();
113 void panic(const char *fmt, ...)
114 __attribute__ ((format (printf, 1, 2)))
115 __attribute__ ((noreturn));
116 void printf(const char *fmt, ...)
117 __attribute__ ((format (printf, 1, 2)));
118 void __dprintf(const char *fmt, ...)
119 __attribute__ ((format (printf, 1, 2)));
120 #define dprintf(lvl, fmt, args...) do { \
121 if (CONFIG_DEBUG_LEVEL && (lvl) <= CONFIG_DEBUG_LEVEL) \
122 __dprintf((fmt) , ##args ); \
124 void __debug_enter(struct bregs *regs, const char *fname);
125 void __debug_stub(struct bregs *regs, int lineno, const char *fname);
126 void __debug_isr(const char *fname);
127 #define debug_enter(regs, lvl) do { \
128 if ((lvl) && (lvl) <= CONFIG_DEBUG_LEVEL) \
129 __debug_enter((regs), __func__); \
131 #define debug_isr(lvl) do { \
132 if ((lvl) && (lvl) <= CONFIG_DEBUG_LEVEL) \
133 __debug_isr(__func__); \
135 #define debug_stub(regs) \
136 __debug_stub((regs), __LINE__, __func__)
137 void hexdump(void *d, int len);
141 void handle_15c2(struct bregs *regs);
148 extern u64 RamSizeOver4G;
157 void ndelay(u32 count);
158 void udelay(u32 count);
159 void mdelay(u32 count);
160 u64 calc_future_tsc(u32 msecs);
161 void handle_1583(struct bregs *regs);
162 void handle_1586(struct bregs *regs);
165 void VISIBLE16 handle_1553(struct bregs *regs);
168 void handle_1ab1(struct bregs *regs);
171 void make_bios_writable();
172 void make_bios_readonly();
175 void pci_bios_setup(void);
182 void smp_probe_setup(void);
185 void smbios_init(void);
188 const char *cbfs_findNprefix(const char *prefix, int n);
189 int cbfs_copy_optionrom(void *dst, u32 maxlen, u32 vendev);
190 void cbfs_run_payload(const char *filename);
192 struct cbfs_file *cbfs_copy_gen_optionrom(void *dst, u32 maxlen
193 , struct cbfs_file *file);
194 void coreboot_setup();
200 void call_bcv(u16 seg, u16 ip);
202 void optionrom_setup();
208 #define PNP_SIGNATURE 0x506e5024 // $PnP
209 u16 get_pnp_offset();
213 void mtrr_setup(void);
216 void reset_vector() __attribute__ ((noreturn));
219 extern u8 BiosChecksum;