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author | imp <imp@FreeBSD.org> | 2004-10-15 00:15:07 +0000 |
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committer | imp <imp@FreeBSD.org> | 2004-10-15 00:15:07 +0000 |
commit | a76b21d1d4525da5833d6ee1cee37363bd8023eb (patch) | |
tree | a2890b26a0deecb974452e4c2ee4978abcc1ffd3 /sys/boot/common/loader.8 | |
parent | 2049409c03d600b774240447e86bc11889166ce5 (diff) | |
download | FreeBSD-src-a76b21d1d4525da5833d6ee1cee37363bd8023eb.zip FreeBSD-src-a76b21d1d4525da5833d6ee1cee37363bd8023eb.tar.gz |
Document hw.{pci,acpi}.host_start_mem
Requested by: ru@
Diffstat (limited to 'sys/boot/common/loader.8')
-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 6fb6b76..538c678 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. |