On Mon, Mar 18, 2024 at 04:28:17PM +0100, Gerd Hoffmann wrote: > On Sat, Mar 16, 2024 at 10:17:00AM +0800, lixianglai wrote: > > Hi Gerd: > > > On Mon, Mar 11, 2024 at 02:39:31AM -0700, Chao Li wrote: > > >> This library for PEI phase, and obtains the QemuFwCfg base address by > > >> directly parsing the FDT, reads and writes the data in QemuFwCfg by > > >> operating on the QemuFwCfg base address. > > >> create mode 100644 > > >> OvmfPkg/LoongArchVirt/Library/FdtQemuFwCfgLib/FdtQemuFwCfgPeiLib.c > > >> create mode 100644 > > >> OvmfPkg/LoongArchVirt/Library/FdtQemuFwCfgLib/FdtQemuFwCfgPeiLib.inf > > >> create mode 100644 > > >> OvmfPkg/LoongArchVirt/Library/FdtQemuFwCfgLib/QemuFwCfgLibInternal.h > > >> create mode 100644 > > >> OvmfPkg/LoongArchVirt/Library/FdtQemuFwCfgLib/QemuFwCfgPei.c > > > Is there anything LoongArch-specific in there? > > No,The main function of this lib library is to obtain the fwcfg base > > address by parsing fdt in the pei stage, > > and provide access to fwcfg through mmio mode, > > the difference between it and the existing library is that the fwcfg base > > address is not hard-coded in the compilation stage, > > and is accessed through mmio rather than io port. > > That would be the case for risc-v and aarch64 too, although I think they > don't need fw_cfg right now (they get all info needed via fdt).
Oops, I was wrong, we have OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgLibMmio.inf take care, Gerd -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#116933): https://edk2.groups.io/g/devel/message/116933 Mute This Topic: https://groups.io/mt/104859897/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
