Messages in this thread |  | | From | Sven Eckelmann <> | Subject | Re: [v5,08/13] ARM: dts: ipq4019: Add ipq4019-ap.dk07.1 common data | Date | Wed, 18 Apr 2018 08:59:40 +0200 |
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On Freitag, 23. März 2018 15:48:51 CEST Sricharan R wrote: > Add the common data for all dk07 based boards. > > Reviewed-by: Abhishek Sahu <absahu@codeaurora.org> > Signed-off-by: Sricharan R <sricharan@codeaurora.org> > --- > arch/arm/boot/dts/qcom-ipq4019-ap.dk07.1.dtsi | 69 +++++++++++++++++++++++++++ > 1 file changed, 69 insertions(+) > create mode 100644 arch/arm/boot/dts/qcom-ipq4019-ap.dk07.1.dtsi
The no-map reserved-memory for tz and smem are missing. Linux doesn't have control over these regions and they are placed in the middle of the ram before Linux even starts. And u-boot is also not adding these ranges automatically.
reserved-memory { #address-cells = <0x1>; #size-cells = <0x1>; ranges; smem@87e00000 { reg = <0x87e00000 0x080000>; no-map; }; tz@87e80000 { reg = <0x87e80000 0x180000>; no-map; }; };
This can either (depending on HW/SW configuration) lead to a failed boot [1] or to runtime crashes like:
root@OpenWrt:/# /tmp/memory-allocator-test main 0 [ 571.758058] Unhandled fault: imprecise external abort (0xc06) at 0x01715ff8 [ 571.758099] pgd = cebec000 [ 571.763826] [01715ff8] *pgd=8e7fa835, *pte=87e7f75f, *ppte=87e7fc7f Bus error
I would not know how to disable QSEE on these boards and thus would assume that it should be part of this dtsi.
Kind regards, Sven
[1] https://www.spinics.net/lists/linux-arm-msm/msg21536.html[unhandled content-type:application/pgp-signature] |  |