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path: root/src/config/failovercalculation.lb
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##
## Compute the location and size of where this firmware image
## (coreboot plus bootloader) will live in the boot rom chip.
##
if USE_FAILOVER_IMAGE
	default ROM_SECTION_SIZE   = FAILOVER_SIZE
	default ROM_SECTION_OFFSET = ( ROM_SIZE - FAILOVER_SIZE )
else
    if USE_FALLBACK_IMAGE
	default ROM_SECTION_SIZE   = FALLBACK_SIZE
	default ROM_SECTION_OFFSET = ( ROM_SIZE - FALLBACK_SIZE - FAILOVER_SIZE )
    else
	if CONFIG_CBFS
		default ROM_SECTION_SIZE   = FALLBACK_SIZE
		default ROM_SECTION_OFFSET = ( ROM_SIZE - FALLBACK_SIZE - FALLBACK_SIZE - FAILOVER_SIZE )
	else
		default ROM_SECTION_SIZE   = ( ROM_SIZE - FALLBACK_SIZE - FAILOVER_SIZE )
		default ROM_SECTION_OFFSET = 0
	end
    end
end

##
## Compute the start location and size size of
## The coreboot bootloader.
##
default PAYLOAD_SIZE            = ( ROM_SECTION_SIZE - ROM_IMAGE_SIZE )
default CONFIG_ROM_PAYLOAD_START = (0xffffffff - ROM_SIZE + ROM_SECTION_OFFSET + 1)

##
## Compute where this copy of coreboot will start in the boot rom
##
default _ROMBASE      = ( CONFIG_ROM_PAYLOAD_START + PAYLOAD_SIZE )

##
## Compute a range of ROM that can cached to speed up coreboot,
## execution speed.
##
## XIP_ROM_SIZE must be a power of 2 and is set in mainboard Config.lb
## XIP_ROM_BASE must be a multiple of XIP_ROM_SIZE
##

if USE_FAILOVER_IMAGE
	default XIP_ROM_BASE = ( _ROMBASE - XIP_ROM_SIZE + ROM_IMAGE_SIZE)
else
    if USE_FALLBACK_IMAGE
	default XIP_ROM_BASE = ( _ROMBASE - XIP_ROM_SIZE + ROM_IMAGE_SIZE + FAILOVER_SIZE)
    else
	default XIP_ROM_BASE = ( _ROMBASE - XIP_ROM_SIZE + ROM_IMAGE_SIZE)
    end
end