====== RT3052F HOWTO. ======

===== RT3050F/RT3052F TODO =====

| PPE NAT h/w acceleration | PPE special target on **if_rt** |
| PPE %%PPPoE%% h/w acceleration | same |
| **if_rt** instance support | it have GMAC1 and GMAC2, so we can use it w/o sw VLANs |
| **if_rt** Scatter/Gather support | automatic Scatter/Gather packets, may help to faster replace packets header |
| Invoke GDMA | we can use generic DMA for memcpy |
| Fix usb |
| Fix rt2872 wireless |

===== HOST SIDE =====

Get a fresh copy of your "head" :)

<code>
svn co svn://svn.freebsd.org/base/head
</code>

cd to it:

<code>
cd head
</code>

Build mipsel toolchain and then kernel:

<code>
make KERNCONF=RT305X TARGET=mips TARGET_ARCH=mipsel kernel-toolchain buildkernel
</code>

cd to kernel build directory:

<code>
cd /usr/obj/mips.mipsel/${PATH_TO_DIR_WITH_HEAD}/sys/RT305X
</code>

Get kernel entry point:

<code>
readelf -h kernel | grep 'Entry point address:'
  Entry point address:               0x80001120
</code>

**//Next steps related for most D-Link boxes, but not always related to other devices//**

Make binary kernel from elf:

<code>
/usr/obj/mips.mipsel/${PATH_TO_DIR_WITH_HEAD}/tmp/usr/bin/objcopy -O binary kernel kernel.bin
</code>

Compress kernel with oldlzma (//oldlzma - LZMA 4.17//)

<code>
oldlzma e kernel.bin kernel.bin.oldlzma
</code>

Make U-Boot image:

<code>
uboot_mkimage -A mips -O linux -T kernel  -C lzma  -a 0x80001120  -e 0x80001120  -n 'FreeBSD Kernel Image'  -d kernel.bin.oldlzma  kernel.oldlzma.uboot
</code>

Then copy U-Boot kernel image to tftp server path (//I use **/tftpboot/**// )

<code>
cp kernel.oldlzma.uboot /tftpboot/DIR-620/kernel.oldlzma.uboot
</code>

===== DEVICE SIDE =====
Break U-Boot to prompt, then load kernel image:

<code>
tftpboot 0x80800000 DIR-620/kernel.oldlzma.uboot
</code>

and start it:

<code>
bootm 0x80800000
</code>