st 11. 8. 2021 v 13:41 odesÃlatel Michal Simek <michal.si...@xilinx.com> napsal: > > Based on thread > https://lists.denx.de/pipermail/u-boot/2021-June/451828.html > especially > "Overall we have a deficiency in the UEFI implementation in that we > cannot deal with block devices added or removed after initialization." > there is a need to deal with removable media as usb/scsi/sata. > > That's why bridge this gap in EFI implementation by resetting usb and > scsi resets to get all disks before efi_init_obj_list() is called. > > In our standard boot flow, where we use distro boot, order is fixed as > "jtag mmc0 mmc1 qspi0 nand0 usb0 usb1 scsi0 pxe dhcp" with prioritizing > boot device added by commit 2882b39d564b ("arm64: zynqmp: Setup the first > boot_target at run time"). > When device has ESP partition all devices should be detected because then > efi_disk_register() in efi_init_obj_list() is called only once. > > The first such a device is sd/emmc(mmc0/mmc1) and then disks on usb/sata > are not handled at all. > > The commit 6bb577dbb30f ("arm64: zynqmp: Disable > EFI_CAPSULE_ON_DISK_EARLY") also pointed out on this issue but detection of > removable media wasn't solved that's why do it now via preboot command. > > I have tested cases without usb and scsi and there is no problem with > calling resets without devices itself. > > Signed-off-by: Michal Simek <michal.si...@xilinx.com> > --- > > Changes in v2: > - Align scsi with distroboot and use run scsi_init instead of scsi reset > - Also align subject was: "xilinx: zynqmp: Reset usb and scsi via preboot" > > configs/xilinx_zynqmp_virt_defconfig | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/configs/xilinx_zynqmp_virt_defconfig > b/configs/xilinx_zynqmp_virt_defconfig > index 38b8f8c8b417..348a60396753 100644 > --- a/configs/xilinx_zynqmp_virt_defconfig > +++ b/configs/xilinx_zynqmp_virt_defconfig > @@ -22,6 +22,7 @@ CONFIG_FIT_VERBOSE=y > CONFIG_SPL_LOAD_FIT=y > CONFIG_SPL_LOAD_FIT_ADDRESS=0x10000000 > CONFIG_USE_PREBOOT=y > +CONFIG_PREBOOT="run scsi_init;usb start" > # CONFIG_DISPLAY_CPUINFO is not set > CONFIG_BOARD_EARLY_INIT_F=y > CONFIG_BOARD_EARLY_INIT_R=y > -- > 2.32.0 >
Applied. M -- Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91 w: www.monstr.eu p: +42-0-721842854 Maintainer of Linux kernel - Xilinx Microblaze Maintainer of Linux kernel - Xilinx Zynq ARM and ZynqMP ARM64 SoCs U-Boot custodian - Xilinx Microblaze/Zynq/ZynqMP/Versal SoCs
