From: Nishanth Menon <nm@ti.com> To: Aswath Govindraju <a-govindraju@ti.com> Cc: Vignesh Raghavendra <vigneshr@ti.com>, Suman Anna <s-anna@ti.com>, Lokesh Vutla <lokeshvutla@ti.com>, Kishon Vijay Abraham I <kishon@ti.com>, Tero Kristo <kristo@kernel.org>, Rob Herring <robh+dt@kernel.org>, <linux-arm-kernel@lists.infradead.org>, <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org> Subject: Re: [PATCH v4 3/3] arm64: dts: ti: k3-am64-main: Update the location of TF-A Date: Tue, 15 Jun 2021 19:20:05 -0500 [thread overview] Message-ID: <20210616002005.c5vxes67pltuxiry@liking> (raw) In-Reply-To: <20210615174325.22853-4-a-govindraju@ti.com> On 23:13-20210615, Aswath Govindraju wrote: > Due to a limitation for USB DFU boot mode, SPL load address has to be less > than or equal to 0x70001000. So, load address of SPL and TF-A have been > moved to 0x70000000 and 0x701c4000 respectively. > > Therefore, update TF-A's location in the device tree node. One additional topic to add is the dependency on bootloader update for this as well. I know things are chicken or egg kind of problem, but will be good to mention requires newer version than 2021.xx version of u-boot as this is an "breaking" change. And, if we block both regions off for bootloader compatibility, that is not feasible given the limited SRAM available as well. > > Signed-off-by: Aswath Govindraju <a-govindraju@ti.com> > --- > arch/arm64/boot/dts/ti/k3-am64-main.dtsi | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi > index 6a883f4349cb..7ab3652dfdfb 100644 > --- a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi > +++ b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi > @@ -24,8 +24,8 @@ > #size-cells = <1>; > ranges = <0x0 0x00 0x70000000 0x200000>; > > - tfa-sram@0 { > - reg = <0x0 0x1c000>; > + tfa-sram@1c4000 { > + reg = <0x1c4000 0x1c000>; > }; > > dmsc-sram@1e0000 { > -- > 2.17.1 > -- Regards, Nishanth Menon Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3 1A34 DDB5 849D 1736 249D
WARNING: multiple messages have this Message-ID (diff)
From: Nishanth Menon <nm@ti.com> To: Aswath Govindraju <a-govindraju@ti.com> Cc: devicetree@vger.kernel.org, Vignesh Raghavendra <vigneshr@ti.com>, Tero Kristo <kristo@kernel.org>, Lokesh Vutla <lokeshvutla@ti.com>, linux-kernel@vger.kernel.org, Kishon Vijay Abraham I <kishon@ti.com>, Rob Herring <robh+dt@kernel.org>, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH v4 3/3] arm64: dts: ti: k3-am64-main: Update the location of TF-A Date: Tue, 15 Jun 2021 19:20:05 -0500 [thread overview] Message-ID: <20210616002005.c5vxes67pltuxiry@liking> (raw) In-Reply-To: <20210615174325.22853-4-a-govindraju@ti.com> On 23:13-20210615, Aswath Govindraju wrote: > Due to a limitation for USB DFU boot mode, SPL load address has to be less > than or equal to 0x70001000. So, load address of SPL and TF-A have been > moved to 0x70000000 and 0x701c4000 respectively. > > Therefore, update TF-A's location in the device tree node. One additional topic to add is the dependency on bootloader update for this as well. I know things are chicken or egg kind of problem, but will be good to mention requires newer version than 2021.xx version of u-boot as this is an "breaking" change. And, if we block both regions off for bootloader compatibility, that is not feasible given the limited SRAM available as well. > > Signed-off-by: Aswath Govindraju <a-govindraju@ti.com> > --- > arch/arm64/boot/dts/ti/k3-am64-main.dtsi | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi > index 6a883f4349cb..7ab3652dfdfb 100644 > --- a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi > +++ b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi > @@ -24,8 +24,8 @@ > #size-cells = <1>; > ranges = <0x0 0x00 0x70000000 0x200000>; > > - tfa-sram@0 { > - reg = <0x0 0x1c000>; > + tfa-sram@1c4000 { > + reg = <0x1c4000 0x1c000>; > }; > > dmsc-sram@1e0000 { > -- > 2.17.1 > -- Regards, Nishanth Menon Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3 1A34 DDB5 849D 1736 249D _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-06-16 0:20 UTC|newest] Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-06-15 17:43 [PATCH v4 0/3] AM64: Update the locations of various elements in SRAM Aswath Govindraju 2021-06-15 17:43 ` Aswath Govindraju 2021-06-15 17:43 ` [PATCH v4 1/3] arm64: dts: ti: k3-am64-main: Update TF-A's maximum size and node name Aswath Govindraju 2021-06-15 17:43 ` Aswath Govindraju 2021-06-16 0:19 ` Nishanth Menon 2021-06-16 0:19 ` Nishanth Menon 2021-06-15 17:43 ` [PATCH v4 2/3] arm64: dts: ti: k3-am64-main: Reserve OCMRAM for DMSC-lite and secure proxy communication Aswath Govindraju 2021-06-15 17:43 ` Aswath Govindraju 2021-06-15 18:48 ` Suman Anna 2021-06-15 18:48 ` Suman Anna 2021-06-15 17:43 ` [PATCH v4 3/3] arm64: dts: ti: k3-am64-main: Update the location of TF-A Aswath Govindraju 2021-06-15 17:43 ` Aswath Govindraju 2021-06-15 18:48 ` Suman Anna 2021-06-15 18:48 ` Suman Anna 2021-06-16 0:20 ` Nishanth Menon [this message] 2021-06-16 0:20 ` Nishanth Menon 2021-06-16 8:43 ` Aswath Govindraju 2021-06-16 8:43 ` Aswath Govindraju 2021-06-15 18:49 ` [PATCH v4 0/3] AM64: Update the locations of various elements in SRAM Suman Anna 2021-06-15 18:49 ` Suman Anna
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