From: Sudeep Holla <sudeep.holla@arm.com> To: linux-arm-kernel@lists.infradead.org Cc: Sudeep Holla <sudeep.holla@arm.com>, devicetree@vger.kernel.org, Liviu Dudau <liviu.dudau@arm.com>, Lorenzo Pieralisi <lpieralisi@kernel.org>, Pierre Gondois <pierre.gondois@arm.com> Subject: [PATCH] arm64: dts: fvp: Add information about L1 and L2 caches Date: Fri, 18 Nov 2022 15:10:17 +0000 [thread overview] Message-ID: <20221118151017.704716-1-sudeep.holla@arm.com> (raw) Add the information about L1 and L2 caches on FVP RevC platform. Though the cache size is configurable through the model parameters, having default values in the device tree helps to exercise and debug any code utilising the cache information without the need of real hardware. Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> --- arch/arm64/boot/dts/arm/fvp-base-revc.dts | 73 +++++++++++++++++++++++ 1 file changed, 73 insertions(+) Hi, When a bug was reported recently on cacheinfo, I was trying to reproduce it but couldn't get access to any hardware. So I ended up using this model and it was useful. So thought of adding the same upstream. Regards, Sudeep diff --git a/arch/arm64/boot/dts/arm/fvp-base-revc.dts b/arch/arm64/boot/dts/arm/fvp-base-revc.dts index 5f6f30c801a7..60472d65a355 100644 --- a/arch/arm64/boot/dts/arm/fvp-base-revc.dts +++ b/arch/arm64/boot/dts/arm/fvp-base-revc.dts @@ -47,48 +47,121 @@ cpu0: cpu@0 { compatible = "arm,armv8"; reg = <0x0 0x000>; enable-method = "psci"; + i-cache-size = <0x8000>; + i-cache-line-size = <64>; + i-cache-sets = <256>; + d-cache-size = <0x8000>; + d-cache-line-size = <64>; + d-cache-sets = <256>; + next-level-cache = <&C0_L2>; }; cpu1: cpu@100 { device_type = "cpu"; compatible = "arm,armv8"; reg = <0x0 0x100>; enable-method = "psci"; + i-cache-size = <0x8000>; + i-cache-line-size = <64>; + i-cache-sets = <256>; + d-cache-size = <0x8000>; + d-cache-line-size = <64>; + d-cache-sets = <256>; + next-level-cache = <&C0_L2>; }; cpu2: cpu@200 { device_type = "cpu"; compatible = "arm,armv8"; reg = <0x0 0x200>; enable-method = "psci"; + i-cache-size = <0x8000>; + i-cache-line-size = <64>; + i-cache-sets = <256>; + d-cache-size = <0x8000>; + d-cache-line-size = <64>; + d-cache-sets = <256>; + next-level-cache = <&C0_L2>; }; cpu3: cpu@300 { device_type = "cpu"; compatible = "arm,armv8"; reg = <0x0 0x300>; enable-method = "psci"; + i-cache-size = <0x8000>; + i-cache-line-size = <64>; + i-cache-sets = <256>; + d-cache-size = <0x8000>; + d-cache-line-size = <64>; + d-cache-sets = <256>; + next-level-cache = <&C0_L2>; }; cpu4: cpu@10000 { device_type = "cpu"; compatible = "arm,armv8"; reg = <0x0 0x10000>; enable-method = "psci"; + i-cache-size = <0x8000>; + i-cache-line-size = <64>; + i-cache-sets = <256>; + d-cache-size = <0x8000>; + d-cache-line-size = <64>; + d-cache-sets = <256>; + next-level-cache = <&C1_L2>; }; cpu5: cpu@10100 { device_type = "cpu"; compatible = "arm,armv8"; reg = <0x0 0x10100>; enable-method = "psci"; + i-cache-size = <0x8000>; + i-cache-line-size = <64>; + i-cache-sets = <256>; + d-cache-size = <0x8000>; + d-cache-line-size = <64>; + d-cache-sets = <256>; + next-level-cache = <&C1_L2>; }; cpu6: cpu@10200 { device_type = "cpu"; compatible = "arm,armv8"; reg = <0x0 0x10200>; enable-method = "psci"; + i-cache-size = <0x8000>; + i-cache-line-size = <64>; + i-cache-sets = <256>; + d-cache-size = <0x8000>; + d-cache-line-size = <64>; + d-cache-sets = <256>; + next-level-cache = <&C1_L2>; }; cpu7: cpu@10300 { device_type = "cpu"; compatible = "arm,armv8"; reg = <0x0 0x10300>; enable-method = "psci"; + i-cache-size = <0x8000>; + i-cache-line-size = <64>; + i-cache-sets = <256>; + d-cache-size = <0x8000>; + d-cache-line-size = <64>; + d-cache-sets = <256>; + next-level-cache = <&C1_L2>; + }; + C0_L2: l2-cache0 { + compatible = "cache"; + cache-size = <0x80000>; + cache-line-size = <64>; + cache-sets = <512>; + cache-level = <2>; + cache-unified; + }; + + C1_L2: l2-cache1 { + compatible = "cache"; + cache-size = <0x80000>; + cache-line-size = <64>; + cache-sets = <512>; + cache-level = <2>; + cache-unified; }; }; -- 2.38.1
WARNING: multiple messages have this Message-ID (diff)
From: Sudeep Holla <sudeep.holla@arm.com> To: linux-arm-kernel@lists.infradead.org Cc: Sudeep Holla <sudeep.holla@arm.com>, devicetree@vger.kernel.org, Liviu Dudau <liviu.dudau@arm.com>, Lorenzo Pieralisi <lpieralisi@kernel.org>, Pierre Gondois <pierre.gondois@arm.com> Subject: [PATCH] arm64: dts: fvp: Add information about L1 and L2 caches Date: Fri, 18 Nov 2022 15:10:17 +0000 [thread overview] Message-ID: <20221118151017.704716-1-sudeep.holla@arm.com> (raw) Add the information about L1 and L2 caches on FVP RevC platform. Though the cache size is configurable through the model parameters, having default values in the device tree helps to exercise and debug any code utilising the cache information without the need of real hardware. Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> --- arch/arm64/boot/dts/arm/fvp-base-revc.dts | 73 +++++++++++++++++++++++ 1 file changed, 73 insertions(+) Hi, When a bug was reported recently on cacheinfo, I was trying to reproduce it but couldn't get access to any hardware. So I ended up using this model and it was useful. So thought of adding the same upstream. Regards, Sudeep diff --git a/arch/arm64/boot/dts/arm/fvp-base-revc.dts b/arch/arm64/boot/dts/arm/fvp-base-revc.dts index 5f6f30c801a7..60472d65a355 100644 --- a/arch/arm64/boot/dts/arm/fvp-base-revc.dts +++ b/arch/arm64/boot/dts/arm/fvp-base-revc.dts @@ -47,48 +47,121 @@ cpu0: cpu@0 { compatible = "arm,armv8"; reg = <0x0 0x000>; enable-method = "psci"; + i-cache-size = <0x8000>; + i-cache-line-size = <64>; + i-cache-sets = <256>; + d-cache-size = <0x8000>; + d-cache-line-size = <64>; + d-cache-sets = <256>; + next-level-cache = <&C0_L2>; }; cpu1: cpu@100 { device_type = "cpu"; compatible = "arm,armv8"; reg = <0x0 0x100>; enable-method = "psci"; + i-cache-size = <0x8000>; + i-cache-line-size = <64>; + i-cache-sets = <256>; + d-cache-size = <0x8000>; + d-cache-line-size = <64>; + d-cache-sets = <256>; + next-level-cache = <&C0_L2>; }; cpu2: cpu@200 { device_type = "cpu"; compatible = "arm,armv8"; reg = <0x0 0x200>; enable-method = "psci"; + i-cache-size = <0x8000>; + i-cache-line-size = <64>; + i-cache-sets = <256>; + d-cache-size = <0x8000>; + d-cache-line-size = <64>; + d-cache-sets = <256>; + next-level-cache = <&C0_L2>; }; cpu3: cpu@300 { device_type = "cpu"; compatible = "arm,armv8"; reg = <0x0 0x300>; enable-method = "psci"; + i-cache-size = <0x8000>; + i-cache-line-size = <64>; + i-cache-sets = <256>; + d-cache-size = <0x8000>; + d-cache-line-size = <64>; + d-cache-sets = <256>; + next-level-cache = <&C0_L2>; }; cpu4: cpu@10000 { device_type = "cpu"; compatible = "arm,armv8"; reg = <0x0 0x10000>; enable-method = "psci"; + i-cache-size = <0x8000>; + i-cache-line-size = <64>; + i-cache-sets = <256>; + d-cache-size = <0x8000>; + d-cache-line-size = <64>; + d-cache-sets = <256>; + next-level-cache = <&C1_L2>; }; cpu5: cpu@10100 { device_type = "cpu"; compatible = "arm,armv8"; reg = <0x0 0x10100>; enable-method = "psci"; + i-cache-size = <0x8000>; + i-cache-line-size = <64>; + i-cache-sets = <256>; + d-cache-size = <0x8000>; + d-cache-line-size = <64>; + d-cache-sets = <256>; + next-level-cache = <&C1_L2>; }; cpu6: cpu@10200 { device_type = "cpu"; compatible = "arm,armv8"; reg = <0x0 0x10200>; enable-method = "psci"; + i-cache-size = <0x8000>; + i-cache-line-size = <64>; + i-cache-sets = <256>; + d-cache-size = <0x8000>; + d-cache-line-size = <64>; + d-cache-sets = <256>; + next-level-cache = <&C1_L2>; }; cpu7: cpu@10300 { device_type = "cpu"; compatible = "arm,armv8"; reg = <0x0 0x10300>; enable-method = "psci"; + i-cache-size = <0x8000>; + i-cache-line-size = <64>; + i-cache-sets = <256>; + d-cache-size = <0x8000>; + d-cache-line-size = <64>; + d-cache-sets = <256>; + next-level-cache = <&C1_L2>; + }; + C0_L2: l2-cache0 { + compatible = "cache"; + cache-size = <0x80000>; + cache-line-size = <64>; + cache-sets = <512>; + cache-level = <2>; + cache-unified; + }; + + C1_L2: l2-cache1 { + compatible = "cache"; + cache-size = <0x80000>; + cache-line-size = <64>; + cache-sets = <512>; + cache-level = <2>; + cache-unified; }; }; -- 2.38.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2022-11-18 15:10 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-11-18 15:10 Sudeep Holla [this message] 2022-11-18 15:10 ` [PATCH] arm64: dts: fvp: Add information about L1 and L2 caches Sudeep Holla 2022-11-25 17:06 ` Sudeep Holla 2022-11-25 17:06 ` Sudeep Holla
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