[coreboot] Warnings/Errors while building coreboot toolchain

[h42 at memeware.net]

I liked to build an image for an Intel G41 based mainboard and got that 
in the build log:


coreboot toolchain v1.52 June 11th, 2018
dsdt.aml   1525:    CreateDwordField (PBUF, 0, PIO0)
Remark   2089 -         Object is not referenced ^  (Name [PIO0] is 
within a method [_GTM])

dsdt.aml   1526:    CreateDwordField (PBUF, 4, DMA0)
Remark   2089 -         Object is not referenced ^  (Name [DMA0] is 
within a method [_GTM])

dsdt.aml   1527:    CreateDwordField (PBUF, 8, PIO1)
Remark   2089 -         Object is not referenced ^  (Name [PIO1] is 
within a method [_GTM])

dsdt.aml   1528:    CreateDwordField (PBUF, 12, DMA1)
Remark   2089 -          Object is not referenced ^  (Name [DMA1] is 
within a method [_GTM])

dsdt.aml   1529:    CreateDwordField (PBUF, 16, FLAG)
Remark   2089 -          Object is not referenced ^  (Name [FLAG] is 
within a method [_GTM])

dsdt.aml   1534:    CreateDwordField (Arg0, 0, PIO0)
Remark   2089 -         Object is not referenced ^  (Name [PIO0] is 
within a method [_STM])

dsdt.aml   1535:    CreateDwordField (Arg0, 4, DMA0)
Remark   2089 -         Object is not referenced ^  (Name [DMA0] is 
within a method [_STM])

dsdt.aml   1536:    CreateDwordField (Arg0, 8, PIO1)
Remark   2089 -         Object is not referenced ^  (Name [PIO1] is 
within a method [_STM])

dsdt.aml   1537:    CreateDwordField (Arg0, 12, DMA1)
Remark   2089 -          Object is not referenced ^  (Name [DMA1] is 
within a method [_STM])

dsdt.aml   1538:    CreateDwordField (Arg0, 16, FLAG)
Remark   2089 -          Object is not referenced ^  (Name [FLAG] is 
within a method [_STM])

dsdt.aml   1562:    CreateDwordField (PBUF, 0, PIO0)
Remark   2089 -         Object is not referenced ^  (Name [PIO0] is 
within a method [_GTM])

dsdt.aml   1563:    CreateDwordField (PBUF, 4, DMA0)
Remark   2089 -         Object is not referenced ^  (Name [DMA0] is 
within a method [_GTM])

dsdt.aml   1564:    CreateDwordField (PBUF, 8, PIO1)
Remark   2089 -         Object is not referenced ^  (Name [PIO1] is 
within a method [_GTM])

dsdt.aml   1565:    CreateDwordField (PBUF, 12, DMA1)
Remark   2089 -          Object is not referenced ^  (Name [DMA1] is 
within a method [_GTM])

dsdt.aml   1566:    CreateDwordField (PBUF, 16, FLAG)
Remark   2089 -          Object is not referenced ^  (Name [FLAG] is 
within a method [_GTM])

dsdt.aml   1571:    CreateDwordField (Arg0, 0, PIO0)
Remark   2089 -         Object is not referenced ^  (Name [PIO0] is 
within a method [_STM])

dsdt.aml   1572:    CreateDwordField (Arg0, 4, DMA0)
Remark   2089 -         Object is not referenced ^  (Name [DMA0] is 
within a method [_STM])

dsdt.aml   1573:    CreateDwordField (Arg0, 8, PIO1)
Remark   2089 -         Object is not referenced ^  (Name [PIO1] is 
within a method [_STM])

dsdt.aml   1574:    CreateDwordField (Arg0, 12, DMA1)
Remark   2089 -          Object is not referenced ^  (Name [DMA1] is 
within a method [_STM])

dsdt.aml   1575:    CreateDwordField (Arg0, 16, FLAG)
Remark   2089 -          Object is not referenced ^  (Name [FLAG] is 
within a method [_STM])