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#ifndef BIOS_H_
#define BIOS_H_
#include <stdint.h>
#include <stddef.h>
#include <stdbool.h>
/*
* When interfacing with assembler code we need to be sure how
* arguments are passed in real mode.
*/
#define bioscall __attribute__((regparm(3)))
#ifndef __ASSEMBLER__
struct biosregs {
uint32_t eax;
uint32_t ebx;
uint32_t ecx;
uint32_t edx;
uint32_t esp;
uint32_t ebp;
uint32_t esi;
uint32_t edi;
uint32_t ds;
uint32_t es;
uint32_t fs;
uint16_t ip;
uint16_t cs;
uint16_t eflags;
} __attribute__((packed));
/*
* BIOS32 is called via a far call, so eflags is pushed by our
* entry point and lies below CS:EIP. We do not include CS:EIP
* at all in this struct.
*/
struct bios32regs {
uint32_t eax;
uint32_t ebx;
uint32_t ecx;
uint32_t edx;
uint32_t esp;
uint32_t ebp;
uint32_t esi;
uint32_t edi;
uint32_t ds;
uint32_t es;
uint32_t fs;
uint32_t eflags;
} __attribute__((packed));
extern bioscall void int10_handler(struct biosregs *regs);
extern bioscall void int15_handler(struct biosregs *regs);
extern bioscall void e820_query_map(struct biosregs *regs);
extern bioscall void pcibios_handler(struct bios32regs *regs);
extern void bios_intfake(void);
extern void bios_irq(void);
extern void bios_int10(void);
extern void bios_int15(void);
extern void bios32_entry(void);
extern uint32_t pic_base(void);
extern void setup_pci(void);
extern bool setup_hw(void);
extern bool setup_mmconfig(void);
extern void setup_mptable(void);
extern void extract_acpi(void);
extern void boot_from_fwcfg(void);
extern uint8_t max_bus;
extern uint16_t e820_seg;
extern uint32_t lowmem;
extern uint8_t stext;
extern uint8_t edata;
extern uint8_t sinit;
extern uint8_t einit;
#define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
static inline void __attribute__((noreturn)) panic(void)
{
asm volatile("cli; hlt");
for(;;);
}
#endif
#endif /* BIOS_H_ */
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