reserve_bios_regions

Name:reserve_bios_regions

Proto:void __init reserve_bios_regions(void)

Type:void

Parameter:Nothing

66

If Not reserve_bios_regions Then Return

74

bios_start = __va(This function reserves all conventional PC system BIOS related* firmware memory areas (some of which are data, some of which* are code), that must not be used by the kernel as available* RAM)

75

bios_start <<= 10

82

If bios_start < 128K, less than this is insane || bios_start > 640K, absolute maximum Then bios_start = 640K, absolute maximum

86

ebda_start = Returns physical address of EBDA. Returns 0 if there is no EBDA.

93

If ebda_start >= 128K, less than this is insane && ebda_start < bios_start Then bios_start = ebda_start

97

memblock_reserve(bios_start, 0x100000 - bios_start)

**Caller**
Name	Describe
setup_arch	setup_arch - architecture-specific boot-time initializations* Note: On x86_64, fixmaps are ready for use even before this is called.

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