Thank you for quick reply.

It was very helpful, and pointed me in the right direction. The answer was hiding within repos/base-sel4/patches/wand_quad.config, I somehow overlooked this directory while looking for answers.

It turned out to be a one line fix in <genode_dir>/contrib/sel4-<SHA>/src/kernel/sel4/configs/imx6/sabre_lite/autoconf.h file.

Changing #define CONFIG_PLAT_WANDQ 1 to #define CONFIG_PLAT_SABRE 1 did the trick. Now I can observe outputs from elf-loader tool, seL4 and Genode.

Cheers

On Wed, Sep 13, 2017 at 8:30 AM, Christian Helmuth <christian.helmuth@...525....labs.com> wrote:

On Wed, Sep 13, 2017 at 12:44:11PM +0200, Alexander Boettcher wrote:
> On 13.09.2017 08:48, Alexander Boettcher wrote:
> > The UART for Sabre Lite and Wand Quad are not the same, as far as I know.
>
> Sorry, my assumption seems to be wrong, since the messages above are
> from the seL4 elfloader already.
>
> So I presume you have just to adjust the seL4 kernel autoconf.h to match
> the Sabre lite board.

The kernel differentiates Sabre Lite and Wandboard regarding UART
config and available RAM.

  $ grep -rnA2 'CONFIG_PLAT_SABRE\|CONFIG_PLAT_WANDQ' .
  ./src/kernel/sel4/configs/imx6/wand_quad/autoconf.h:75:#define CONFIG_PLAT_WANDQ 1
  ./src/kernel/sel4/configs/imx6/wand_quad/autoconf.h-76-#define CONFIG_HAVE_LIB_PLATSUPPORT 1
  ./src/kernel/sel4/configs/imx6/wand_quad/autoconf.h-77-#define CONFIG_NUM_DOMAINS 16
  --
  ./src/kernel/sel4/include/plat/imx6/plat/machine/hardware.h:55:#if defined(CONFIG_PLAT_SABRE)
  ./src/kernel/sel4/include/plat/imx6/plat/machine/hardware.h-56-    /* Sabre has 1 GiB */
  ./src/kernel/sel4/include/plat/imx6/plat/machine/hardware.h-57-    { /* .start = */ 0x10000000, /* .end = */ 0x50000000 }
  ./src/kernel/sel4/include/plat/imx6/plat/machine/hardware.h:58:#elif defined(CONFIG_PLAT_WANDQ)
  ./src/kernel/sel4/include/plat/imx6/plat/machine/hardware.h-59-    /* Wandboard Quad: 2 GiB */
  ./src/kernel/sel4/include/plat/imx6/plat/machine/hardware.h-60-    { /* .start = */ 0x10000000, /* .end = */ 0x90000000 }
  --
  ./src/kernel/sel4/include/plat/imx6/plat/machine/devices.h:15:#ifdef CONFIG_PLAT_SABRE
  ./src/kernel/sel4/include/plat/imx6/plat/machine/devices.h-16-#define UART_PADDR                  UART2_PADDR
  ./src/kernel/sel4/include/plat/imx6/plat/machine/devices.h:17:#elif defined(CONFIG_PLAT_WANDQ)
  ./src/kernel/sel4/include/plat/imx6/plat/machine/devices.h-18-#define UART_PADDR                  UART1_PADDR
  ./src/kernel/sel4/include/plat/imx6/plat/machine/devices.h-19-#else

Greets
--
Christian Helmuth
Genode Labs

https://www.genode-labs.com/ · https://genode.org/
https://twitter.com/GenodeLabs · /ˈdʒiː.nəʊd/

Genode Labs GmbH · Amtsgericht Dresden · HRB 28424 · Sitz Dresden

Geschäftsführer: Dr.-Ing. Norman Feske, Christian Helmuth

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