diff options
Diffstat (limited to 'sys/boot/common')
| -rw-r--r-- | sys/boot/common/loader.8 | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/sys/boot/common/loader.8 b/sys/boot/common/loader.8 index 6fb6b76af1fc7..538c678d1cbdd 100644 --- a/sys/boot/common/loader.8 +++ b/sys/boot/common/loader.8 @@ -429,6 +429,15 @@ are also accepted and indicate kilobytes, megabytes and gigabytes respectively. An invalid suffix will result in the variable being ignored by the kernel. +.It Va hw.pci.host_start_mem, hw.acpi.host_start_mem +When not otherwise constrained, this limits the memory start +address. +The default is 0x80000000 and should be set to at least size of the +memory and not conflict with other resources. +Typically, only systems without pci bridges need to set this variable +since pci bridges typically constrain the memory starting address +(and the variable is only used when bridges don't constrain this +address). .It Va hw.pci.enable_io_modes Enable PCI resources which are left off by some BIOSes or are not enabled correctly by the device driver. |