On 02.08.19 21:46, João Reis wrote:
> I send in attachment the root cell (ultra96.c) and non root cell
> (ultra96-linux-demo2.c) config files, along with the .dtb i am using.
>
> The Image and rootfs.cpio files occupy 89,9MB and 79,4MB, respectively. (link
> to
> download them if you want to:
> http://www.mediafire.com/folder/sopta5vdf01yfm8,kwk1yt5jc9zcpl3)
That's obviously too large for the remaining space in that region. I will try to
reproduce in order to understand why the loader attempts this nevertheless.
Meanwhile, you could try if expanding that region a bit more makes it work - or
just moves the problem around.
Jan
>
> sexta-feira, 2 de Agosto de 2019 às 08:28:52 UTC+1, Jan Kiszka escreveu:
>
> On 02.08.19 04:34, João Reis wrote:
> > The value of arch.ramdisk_address() is 2062893056, converted to
> hexadecimal is
> > 0x7AF54000, which is within the newly added RAM memory region that
> begins at
> > address 0x60000000.
> >
>
> OK, and what' the size that shall be transferred here? Keep in mind that
> there
> is only 0xF9C000 (16367616) left in that region. That information is part
> of
> the
> 'load' structure JailhouseCell.load assembles. If that size if too large,
> the
> driver will reject it. That would explain the error, not yet the reason
> for
> jailhouse-cell-linux to make that mistake.
>
> If you share your configs, the kernel and dtb images and the information
> how
> large the initramfs is, I can try to reproduce that.
>
> Jan
>
> > quarta-feira, 31 de Julho de 2019 às 07:22:32 UTC+1, Jan Kiszka
> escreveu:
> >
> > On 31.07.19 02:40, João Reis wrote:
> > > Other thing i forgot was that on Ultrascale+ the RAM finishes at
> 2GB
> > > (0x80000000), so i moved the memory region to 0x60000000, with a
> different
> > size
> > > to not overlap any other memory region.
> > >
> > > /* RAM */ {
> > > .phys_start = 0x60000000,
> > > .virt_start = 0x60000000,
> > > .size = 0x1bef0000, //must be page size aligned
> > > .flags = JAILHOUSE_MEM_READ | JAILHOUSE_MEM_WRITE |
> > > JAILHOUSE_MEM_EXECUTE | JAILHOUSE_MEM_LOADABLE |
> > > JAILHOUSE_MEM_DMA,
> > > },
> > >
> > > But now it gives me the error on ramdisk_address:
> > >
> > > Traceback (most recent call last):
> > > File "/usr/local/libexec/jailhouse/jailhouse-cell-linux", line
> 831, in
> > <module>
> > > cell.load(args.initrd.read(), arch.ramdisk_address())
> > > File
> "/usr/local/lib/python2.7/dist-packages/pyjailhouse/cell.py",
> line
> > 44, in
> > > load
> > > fcntl.ioctl(self.dev <http://self.dev> <http://self.dev>,
> self.JAILHOUSE_CELL_LOAD, load)
> > > IOError: [Errno 22] Invalid argument
> > >
> >
> > To make this a bit more systematic, I would recommend you to
> instrument the
> > code, dump this address e.g., and match against what you think you
> configured.
> >
> > Jan
> >
> > --
> > Siemens AG, Corporate Technology, CT RDA IOT SES-DE
> > Corporate Competence Center Embedded Linux
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