v12-rc1: update readme files for the bookworm v12 release

nanopi r4s mmc or usb ssd image file

• nanopi-r4s_bookworm-rc1.img.xz - complete disk image of arm64 debian linux 12 (stock debian 6.1 kernel)

device tree

• rk3399-nanopi-r4s.dtb - rockpi-4c-plus dtb built from linux 6.2.2
• rk3399-nanopi-r4s-enterprise.dtb - rockpi-4c-plus dtb built from linux 6.2.2

uboot - signed with arm trusted firmware v2.8 rk3399_bl31.elf: https://github.com/atf-builds/atf/releases/tag/v2.8

• idbloader.img - uboot spl v2023.01 loader for nanopi r4s

• u-boot.itb - uboot v2023.01 loader for nanopi r4s

• usb_idbloader.img - uboot spl v2023.01 loader for nanopi r4s (boot to usb ssd)

• usb_u-boot.itb - uboot v2023.01 loader for nanopi r4s (boot to usb ssd)

debian linux 11.4 arm64: nanopi-r4s native build

nanopi-r4s image file
bullseye.img.xz - complete disk image of arm64 debian linux 11.4 built for the nanopi-r4s

device tree
rk3399-nanopi-r4s.dtb - nanopi-r4s dtb built from linux 5.18.10

uboot - arm trusted firmware v2.6 rk3399_bl31.elf: https://github.com/atf-builds/atf/releases/tag/v2.6
rksd_loader.img - rockchip 3399 sd loader, uboot-2022.04
u-boot.itb - image tree blob, uboot-2022.04

usb_rksd_loader.img - boots directly to usb
usb_u-boot.itb - boots directly to usb

debian linux 11.3 arm64: nanopi-r4s native build

nanopi-r4s image file
bullseye.img.xz - complete disk image of arm64 debian linux 11.3 built for the nanopi-r4s

device tree
rk3399-nanopi-r4s.dtb - nanopi-r4s dtb built from linux 5.18.8

uboot - arm trusted firmware v2.6 rk3399_bl31.elf: https://github.com/atf-builds/atf/releases/tag/v2.6
rksd_loader.img - rockchip 3399 sd loader, uboot-2021.04
u-boot.itb - image tree blob, uboot-2021.04

usb_rksd_loader.img - boots directly to usb
usb_u-boot.itb - boots directly to usb

debian linux 11.1 arm64: nanopi-r4s native build

nanopi-r4s image file
bullseye.img.xz - complete disk image of arm64 debian linux 11.1 built for the nanopi-r4s

device tree
rk3399-nanopi-r4s.dtb - nanopi-r4s dtb built from linux 5.14.13

uboot - arm trusted firmware v2.4 rk3399_bl31.elf: https://github.com/atf-builds/atf/releases/tag/v2.4
rksd_loader.img - rockchip 3399 sd loader, uboot-2021.04
u-boot.itb - image tree blob, uboot-2021.04

usb_rksd_loader.img - boots directly to usb
usb_u-boot.itb - boots directly to usb