1 files changed, 92 insertions, 0 deletions
diff --git a/roms/qboot/include/bios.h b/roms/qboot/include/bios.h
new file mode 100644
index 000000000..7f8f67767
--- /dev/null
+++ b/roms/qboot/include/bios.h
@@ -0,0 +1,92 @@
+#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_ */