Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1444066
| From | Arnd Bergmann <arnd@arndb.de> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: Memory and IO space Enabling different in x86 and ARM64 |
| Date | 2016-07-15 10:40 +0200 |
| Message-ID | <rV6P8-4CX-39@gated-at.bofh.it> (permalink) |
| References | <rV6P7-4CX-1@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Friday, July 15, 2016 8:29:49 AM CEST Bharat Kumar Gogada wrote: > I observe that memory and IO space are enabled by BIOS in x86. > > In ARM64 we need to call pci_enable_device form End Point to enable these resources. > > Why the resource enablement is different in x86 and ARM64 ? > > Please correct me if my observation is wrong. This is a difference between systems with a BIOS and embedded systems with a plain bootloader that ignores PCI. On an ARM64 server system with UEFI you should expect the device to be usable too, but on an embedded system, Linux takes the role of the BIOS. Arnd
Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
Memory and IO space Enabling different in x86 and ARM64 Bharat Kumar Gogada <bharat.kumar.gogada@xilinx.com> - 2016-07-15 10:40 +0200
Re: Memory and IO space Enabling different in x86 and ARM64 Arnd Bergmann <arnd@arndb.de> - 2016-07-15 10:40 +0200
Re: Memory and IO space Enabling different in x86 and ARM64 Bjorn Helgaas <helgaas@kernel.org> - 2016-07-15 23:50 +0200
RE: Memory and IO space Enabling different in x86 and ARM64 Bharat Kumar Gogada <bharat.kumar.gogada@xilinx.com> - 2016-07-16 05:30 +0200
csiph-web