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 { \
77 : "+a"(*peax), "=r"(*pflags) \
83 inline u32 stack_hop(u32 eax, u32 edx, u32 ecx, void *func);
84 u8 checksum_far(u16 buf_seg, void *buf_far, u32 len);
85 u8 checksum(void *buf, u32 len);
86 int memcmp(const void *s1, const void *s2, size_t n);
87 size_t strlen(const char *s);
88 int strcmp(const char *s1, const char *s2);
89 inline void memset_far(u16 d_seg, void *d_far, u8 c, size_t len);
90 inline void memset16_far(u16 d_seg, void *d_far, u16 c, size_t len);
91 void *memset(void *s, int c, size_t n);
92 #define memcpy __builtin_memcpy
93 inline void memcpy_far(u16 d_seg, void *d_far
94 , u16 s_seg, const void *s_far, size_t len);
95 void *memmove(void *d, const void *s, size_t len);
96 char *strtcpy(char *dest, const char *src, size_t len);
98 inline void call16(struct bregs *callregs);
99 inline void call16big(struct bregs *callregs);
100 inline void __call16_int(struct bregs *callregs, u16 offset);
101 #define call16_int(nr, callregs) do { \
102 extern void irq_trampoline_ ##nr (); \
103 __call16_int((callregs), (u32)&irq_trampoline_ ##nr ); \
105 void usleep(u32 usec);
106 int get_keystroke(int msec);
109 void debug_serial_setup();
110 void panic(const char *fmt, ...)
111 __attribute__ ((format (printf, 1, 2)))
112 __attribute__ ((noreturn));
113 void printf(const char *fmt, ...)
114 __attribute__ ((format (printf, 1, 2)));
115 void __dprintf(const char *fmt, ...)
116 __attribute__ ((format (printf, 1, 2)));
117 #define dprintf(lvl, fmt, args...) do { \
118 if (CONFIG_DEBUG_LEVEL && (lvl) <= CONFIG_DEBUG_LEVEL) \
119 __dprintf((fmt) , ##args ); \
121 void __debug_enter(struct bregs *regs, const char *fname);
122 void __debug_stub(struct bregs *regs, int lineno, const char *fname);
123 void __debug_isr(const char *fname);
124 #define debug_enter(regs, lvl) do { \
125 if ((lvl) && (lvl) <= CONFIG_DEBUG_LEVEL) \
126 __debug_enter((regs), __func__); \
128 #define debug_isr(lvl) do { \
129 if ((lvl) && (lvl) <= CONFIG_DEBUG_LEVEL) \
130 __debug_isr(__func__); \
132 #define debug_stub(regs) \
133 __debug_stub((regs), __LINE__, __func__)
134 void hexdump(void *d, int len);
138 void handle_15c2(struct bregs *regs);
145 extern u64 RamSizeOver4G;
154 void ndelay(u32 count);
155 void udelay(u32 count);
156 void mdelay(u32 count);
157 u64 calc_future_tsc(u32 msecs);
158 void handle_1583(struct bregs *regs);
159 void handle_1586(struct bregs *regs);
162 void VISIBLE16 handle_1553(struct bregs *regs);
165 void handle_1ab1(struct bregs *regs);
168 void make_bios_writable();
169 void make_bios_readonly();
172 void pci_bios_setup(void);
179 void smp_probe_setup(void);
182 void smbios_init(void);
185 const char *cbfs_findNprefix(const char *prefix, int n);
186 int cbfs_copy_optionrom(void *dst, u32 maxlen, u32 vendev);
187 void cbfs_run_payload(const char *filename);
189 struct cbfs_file *cbfs_copy_gen_optionrom(void *dst, u32 maxlen
190 , struct cbfs_file *file);
191 void coreboot_setup();
197 void call_bcv(u16 seg, u16 ip);
199 void optionrom_setup();
205 #define PNP_SIGNATURE 0x506e5024 // $PnP
206 u16 get_pnp_offset();
210 void mtrr_setup(void);
213 void reset_vector() __attribute__ ((noreturn));
216 extern u8 BiosChecksum;