diff options
Diffstat (limited to 'src/config/failovercalculation.lb')
| -rw-r--r-- | src/config/failovercalculation.lb | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/src/config/failovercalculation.lb b/src/config/failovercalculation.lb new file mode 100644 index 0000000000..9206e99cdd --- /dev/null +++ b/src/config/failovercalculation.lb @@ -0,0 +1,48 @@ +## +## 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 + default ROM_SECTION_SIZE = ( ROM_SIZE - FALLBACK_SIZE - FAILOVER_SIZE ) + default ROM_SECTION_OFFSET = 0 + 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. +## XIP_ROM_BASE must be a multiple of XIP_ROM_SIZE +## +default XIP_ROM_SIZE = 64 * 1024 + +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 + |