[PATCH v4] Raspberrypi: updated the console interface.

[Christian Mauderer]

On 01/01/2020 07:38, Niteesh wrote:
> How to turn off optimizations, while debugging some of the variables get
> optimized out.

First: Great that it works now.

Regarding optimization: Do a

    export CFLAGS_OPTIMIZE_V="-O0 -g"

before configure and make. Alternatively change it in
bsps/arm/raspberrypi/config/raspberrypi.inc but be careful to not commit
that change.

> 
> On Wed, Jan 1, 2020 at 12:02 PM Niteesh <gsnb.gn at gmail.com
> <mailto:gsnb.gn at gmail.com>> wrote:
> 
>     Good news, The FDT works. For testing purposes, I used a different
>     DTB file provided by
>     raspberrpi foundation. It has a different structure than the DTB
>     from FreeBSD, so I modified the
>     initialization code a little bit, but anyhow it works, the registers
>     are initialized from the DTB file. But they are
>     virtual addresses we need to offset them before initializing the
>     registers.
> 
>     (gdb) p pl011_context
>     $23 = {base = {lock = {interrupt = {<No data fields>}, mutex =
>     {_Queue = {_Lock = {_next_ticket = 0,
>                 _now_serving = 0}, _heads = 0x0, _owner = 0x0, _name =
>     0x0}}},
>         lock_acquire = 0x2095d1 <rtems_termios_device_lock_acquire_default>,
>         lock_release = 0x2095e1
>     <rtems_termios_device_lock_release_default>},*regs = 0x7e201000*,
>     irq = 0,
>       initial_baud = 0}
>     (gdb) 
> 
>     I will add the offset function, and send in the patch. I am also
>     planning to replace a manual search with
>     fdt_node_offset_by_compatible. 
>