40 	unsigned long bios_start = 0, ebda_start = 0;  in find_trampoline_placement()  local
60 		bios_start = *(unsigned short *)0x413 << 10;  in find_trampoline_placement()
63 	if (bios_start < BIOS_START_MIN || bios_start > BIOS_START_MAX)  in find_trampoline_placement()
64 		bios_start = BIOS_START_MAX;  in find_trampoline_placement()
66 	if (ebda_start > BIOS_START_MIN && ebda_start < bios_start)  in find_trampoline_placement()
67 		bios_start = ebda_start;  in find_trampoline_placement()
69 	bios_start = round_down(bios_start, PAGE_SIZE);  in find_trampoline_placement()
73 		unsigned long new = bios_start;  in find_trampoline_placement()
78 		if (bios_start <= entry->addr)  in find_trampoline_placement()
86 		if (bios_start > entry->addr + entry->size)  in find_trampoline_placement()
97 		if (new - TRAMPOLINE_32BIT_SIZE > bios_start)  in find_trampoline_placement()
100 		bios_start = new;  in find_trampoline_placement()
105 	return bios_start - TRAMPOLINE_32BIT_SIZE;  in find_trampoline_placement()