[LEDE-DEV] [PATCH 2/3] scripts: add EVA ramboot script

John Crispin john at phrozen.org
Fri Mar 9 11:52:10 PST 2018



On 09/03/18 20:17, Valentin Spreckels wrote:
> The bootloader on the FRITZ!Box 7412 crashes when flashing images. Thus
> the AVM recovery tool uses another approach: It uses the bootloader to
> load a small linux system into the ram and boot it from there. This
> system will then flash the image.
>
> This script mimics the behavior: It loads an openwrt initramfs image.
> After this a sysupgrade can be done to persistently install openwrt.
>
> Signed-off-by: Valentin Spreckels <Valentin.Spreckels at Informatik.Uni-Oldenburg.DE>

I have been using an ugly shell script to do the same for a few years so ...

Acked-by: John Crispin <john at phrozen.org>

> ---
>   scripts/flashing/eva_ramboot.py | 37 +++++++++++++++++++++++++++++++++++++
>   1 file changed, 37 insertions(+)
>   create mode 100755 scripts/flashing/eva_ramboot.py
>
> diff --git a/scripts/flashing/eva_ramboot.py b/scripts/flashing/eva_ramboot.py
> new file mode 100755
> index 0000000000..b825d2768b
> --- /dev/null
> +++ b/scripts/flashing/eva_ramboot.py
> @@ -0,0 +1,37 @@
> +#!/usr/bin/python
> +
> +from ftplib import FTP
> +from sys import argv
> +from os import stat
> +
> +assert len(argv) == 3
> +ip = argv[1]
> +image = argv[2]
> +
> +size = stat(image).st_size
> +# arbitrary size limit, to prevent the address calculations from overflows etc.
> +assert size < 0x2000000
> +
> +# We need to align the address. A page boundary seems to be sufficient on 7362sl
> +# and 7412
> +addr = ((0x8000000 - size) & ~0xfff)
> +haddr = 0x80000000 + addr
> +img = open(image, "rb")
> +
> +ftp = FTP(ip, 'adam2', 'adam2')
> +
> +def adam(cmd):
> +	print("> %s"%(cmd))
> +	resp = ftp.sendcmd(cmd)
> +	print("< %s"%(resp))
> +	assert resp[0:3] == "200"
> +
> +ftp.set_pasv(True)
> +# The following parameters allow booting the avm recovery system with this
> +# script.
> +adam('SETENV memsize 0x%08x'%(addr))
> +adam('SETENV kernel_args_tmp mtdram1=0x%08x,0x88000000'%(haddr))
> +adam('MEDIA SDRAM')
> +ftp.storbinary('STOR 0x%08x 0x88000000'%(haddr), img)
> +img.close()
> +ftp.close()




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