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-# android_kernel_lineage-rockchip_orangepi5ultra
+# Orange Pi 5 Ultra — Kernel (Prebuilt)
+
+Prebuilt mainline Linux kernel and boot files for the Orange Pi 5 Ultra (RK3588).
+
+## Contents
+
+| File | Description |
+|------|-------------|
+| `Image` | ARM64 Linux kernel (mainline 6.15.0-rc7 + Rockchip DRM patches) |
+| `rk3588-orangepi-5-ultra.dtb` | Device tree blob for Orange Pi 5 Ultra |
+| `u-boot-rockchip.bin` | U-Boot bootloader (Rockchip TPL/SPL + U-Boot) |
+| `boot.cmd` | U-Boot boot script source |
+| `boot.scr` | U-Boot boot script (compiled from boot.cmd) |
+| `config.txt` | Boot configuration (DTB selection, boot device, recovery toggle) |
+| `android-sdcard.dtbo` | Device tree overlay for SD card |
+| `uRamdisk` | Android boot ramdisk (U-Boot format) |
+| `uRecovery` | Android recovery ramdisk (U-Boot format) |
+
+## Boot Configuration
+
+### Boot Device (config.txt)
+
+| Device | `boot_device` | `boot_devnum` |
+|--------|---------------|---------------|
+| SD card | `mmc` | `0` |
+| eMMC | `mmc` | `1` |
+| NVMe | `nvme` | `0` |
+| USB | `usb` | `0` |
+
+### Recovery
+
+Set `recovery=true` in `config.txt` to boot into recovery mode.
+
+### Recompiling boot.scr
+
+If you modify `boot.cmd`, recompile with:
+
+```bash
+mkimage -A arm64 -O linux -T script -C none -n "Orange Pi 5 Ultra Boot" -d boot.cmd boot.scr
+```
+
+## Kernel Configuration
+
+Key enabled options:
+- `CONFIG_DRM_PANFROST` — Mali-G610 GPU (Panfrost)
+- `CONFIG_DRM_DW_HDMI` — HDMI output
+- `CONFIG_SND_SOC_ES8388` — ES8388 audio codec
+- `CONFIG_R8169` — RTL8125BG 2.5GbE Ethernet
+- `CONFIG_BRCMFMAC` — WiFi (Ampak AP6611S)
+- `CONFIG_BT_HCIUART_BCM` — Bluetooth 5.3
+- `CONFIG_USB_DWC3` — USB 3.0
+- `CONFIG_NVME_CORE` — NVMe storage
+
+## Source
+
+Based on mainline Linux 6.15-rc7 with Rockchip DRM patches from the dvab-sarma AOSP project.
+
+## Branch
+
+`lineage-23.2` — for use with LineageOS 23.2 (Android 16).
diff --git a/android-sdcard.dtbo b/android-sdcard.dtbo
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+setenv load_addr "0x9000000"
+setenv boot_device "mmc"
+setenv boot_devnum "0"
+setenv boot_partnum "1"
+setenv root_partnum "2"
+setenv prefix "/"
+
+load ${devtype} ${devnum} ${load_addr} ${prefix}config.txt
+env import -t ${load_addr} ${filesize}
+
+load ${boot_device} ${boot_devnum}:${boot_partnum} ${kernel_addr_r} ${prefix}Image
+load ${boot_device} ${boot_devnum}:${boot_partnum} ${fdt_addr_r} ${prefix}${fdtfile}
+
+if test "${recovery}" = "true"; then
+    echo "Booting into Recovery...."
+    load ${boot_device} ${boot_devnum}:${boot_partnum} ${fdtoverlay_addr_r} /${fdtoverlay}
+    fdt addr ${fdt_addr_r}
+    fdt resize
+    fdt apply ${fdtoverlay_addr_r}
+    load ${boot_device} ${boot_devnum}:${boot_partnum} ${ramdisk_addr_r} /uRecovery
+else
+    echo "Booting into normal Android...."
+    load ${boot_device} ${boot_devnum}:${boot_partnum} ${ramdisk_addr_r} /uRamdisk
+fi;
+
+
+part uuid ${boot_device} ${boot_devnum}:${root_partnum} partuuid
+
+setenv bootargs "loglevel=8 earlycon=uart8250,mmio32,0xfeb50000 console=ttyS2,1500000 root=/dev/ram0 rootwait pcie_aspm=off pcie_port_pm=off nvme_core.default_ps_max_latency_us=0 androidboot.boot_part_uuid=${partuuid} androidboot.hardware=opi5ultra androidboot.selinux=permissive"
+
+booti ${kernel_addr_r} ${ramdisk_addr_r} ${fdt_addr_r}
diff --git a/boot.scr b/boot.scr
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diff --git a/config.txt b/config.txt
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+boot_device=mmc
+boot_devnum=0
+boot_partnum=1
+root_partnum=2
+fdtfile=rk3588-orangepi-5-ultra.dtb
+fdtoverlay=android-sdcard.dtbo
+recovery=false
diff --git a/rk3588-orangepi-5-ultra.dtb b/rk3588-orangepi-5-ultra.dtb
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diff --git a/u-boot-rockchip.bin b/u-boot-rockchip.bin
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diff --git a/uRamdisk b/uRamdisk
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diff --git a/uRecovery b/uRecovery
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