From mboxrd@z Thu Jan 1 00:00:00 1970 From: sven.eckelmann@openmesh.com (Sven Eckelmann) Date: Wed, 18 Apr 2018 08:59:46 +0200 Subject: [v5,05/13] ARM: dts: ipq4019: Add ipq4019-ap.dk04.dtsi In-Reply-To: <1521800336-19266-6-git-send-email-sricharan@codeaurora.org> References: <1521800336-19266-6-git-send-email-sricharan@codeaurora.org> Message-ID: <2641190.FRMBLJWkCS@bentobox> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Freitag, 23. M?rz 2018 15:48:48 CEST Sricharan R wrote: > Add the common parts for the dk04 boards. > > Reviewed-by: Abhishek Sahu > Signed-off-by: Sricharan R > --- > arch/arm/boot/dts/qcom-ipq4019-ap.dk04.1.dtsi | 115 ++++++++++++++++++++++++++ > arch/arm/boot/dts/qcom-ipq4019.dtsi | 2 +- > 2 files changed, 116 insertions(+), 1 deletion(-) > create mode 100644 arch/arm/boot/dts/qcom-ipq4019-ap.dk04.1.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 at 87e00000 { reg = <0x87e00000 0x080000>; no-map; }; tz at 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 at 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 -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 833 bytes Desc: This is a digitally signed message part. URL: