Date: Thu, 13 Feb 2020 21:51:24 +0100 From: =?utf-8?Q?Klaus_K=C3=BCchemann?= <maciphone2@googlemail.com> To: Mark Millard <marklmi@yahoo.com>, freebsd-arm@freebsd.org Subject: Re: A investigative hack that makes (for example) head -r356529 boot and operate normally an RPi4B (finally!): protect all armstub8-gic.bin's loaded content from replacement by the kernel Message-ID: <256E923D-AD9A-4DB3-84F7-7BDD55E75691@googlemail.com> In-Reply-To: <B64C6065-D804-4D6F-8660-F8DBB9946DEB@yahoo.com> References: <7E7605DC-021D-448A-8459-8EC26BA9836D.ref@yahoo.com> <7E7605DC-021D-448A-8459-8EC26BA9836D@yahoo.com> <E1j2EmR-000Mwm-ID@iz-wera-new.HS-Karlsruhe.DE> <CACNAnaHVYeuoK=4f7XzokpAVjcqd6ovD58-0LdP_vPGjiXQgdw@mail.gmail.com> <E1j2FRX-000MyR-1O@iz-wera-new.HS-Karlsruhe.DE> <E1j2G3j-000Mzo-Dw@iz-wera-new.HS-Karlsruhe.DE> <CACNAnaHUwu0GmqW9QZRhS2sMK0HpsjdYRz3YouL5FMBdWBCW-Q@mail.gmail.com> <B64C6065-D804-4D6F-8660-F8DBB9946DEB@yahoo.com>
next in thread | previous in thread | raw e-mail | index | archive | help
> Am 13.02.2020 um 17:50 schrieb Mark Millard via freebsd-arm = <freebsd-arm@freebsd.org>: >=20 > There is the cpu-rlease-addr information that seems > to refer to some 1st memory page content: >=20 > cpus { > #address-cells =3D <0x00000001>; > #size-cells =3D <0x00000000>; > enable-method =3D "brcm,bcm2836-smp"; > phandle =3D <0x000000be>; > cpu@0 { > device_type =3D "cpu"; > compatible =3D "arm,cortex-a72"; > reg =3D <0x00000000>; > enable-method =3D "spin-table"; > cpu-release-addr =3D <0x00000000 0x000000d8>; > phandle =3D <0x0000001d>; > }; > cpu@1 { > device_type =3D "cpu"; > compatible =3D "arm,cortex-a72"; > reg =3D <0x00000001>; > enable-method =3D "spin-table"; > cpu-release-addr =3D <0x00000000 0x000000e0>; > phandle =3D <0x0000001e>; > }; > cpu@2 { > device_type =3D "cpu"; > compatible =3D "arm,cortex-a72"; > reg =3D <0x00000002>; > enable-method =3D "spin-table"; > cpu-release-addr =3D <0x00000000 0x000000e8>; > phandle =3D <0x0000001f>; > }; > cpu@3 { > device_type =3D "cpu"; > compatible =3D "arm,cortex-a72"; > reg =3D <0x00000003>; > enable-method =3D "spin-table"; > cpu-release-addr =3D <0x00000000 0x000000f0>; > phandle =3D <0x00000020>; > }; > }; >=20 >=20 Although I didn=E2=80=99t have yet time to step into debugging just a = sidenote : , the above table shown from you is for bcm2836=20 Where for bcm-2711 dtsi : cpu0: cpu@0 { device_type =3D "cpu"; compatible =3D "arm,cortex-a72"; reg =3D <0>; enable-method =3D "spin-table"; cpu-release-addr =3D <0x0 0x000000d8>; }; cpu1: cpu@1 { device_type =3D "cpu"; compatible =3D "arm,cortex-a72"; reg =3D <1>; enable-method =3D "spin-table"; cpu-release-addr =3D <0x0 0x000000e0>; }; cpu2: cpu@2 { device_type =3D "cpu"; compatible =3D "arm,cortex-a72"; reg =3D <2>; enable-method =3D "spin-table"; cpu-release-addr =3D <0x0 0x000000e8>; }; cpu3: cpu@3 { device_type =3D "cpu"; compatible =3D "arm,cortex-a72"; reg =3D <3>; enable-method =3D "spin-table"; cpu-release-addr =3D <0x0 0x000000f0>; }; }; Regards Klaus
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?256E923D-AD9A-4DB3-84F7-7BDD55E75691>