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mvebu: armada 370: dts: fix the crypto engine

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The crypto engine in Armada 370 SoCs is currently broken. It can be
checked installing the required packages for testing openssl with hw
acceleration:

  opkg install openssl-util
  opkg install kmod-cryptodev
  opkg install libopenssl-devcrypto

After configuring /etc/ssl/openssl.cnf to let openssl use the crypto
engine for digest operations, and performing some checksums..

  md5sum 10M-file.bin
  openssl md5 10M-file.bin

...we can see they don't match.

There might be an alignment or size constraint issue caused by the
idle-sram area.

Use the whole crypto sram and disable the idle-sram area to fix it. Also
disable the idle support by adding the broken-idle property to prevent
accessing the disabled idle-sram.

We don't care about disabling the idle support since it is already broken
in Armada 370 causing a huge performance loss because it disables
permanently the L2 cache. This was reported in the Openwrt forum and
elsewhere by Debian users with different board models.

Signed-off-by: Daniel González Cabanelas <dgcbueu@gmail.com>
This commit is contained in:
Daniel González Cabanelas 2021-04-04 23:06:46 +02:00 committed by Hauke Mehrtens
parent fa6f57f66c
commit 2e1ebe96c6
2 changed files with 58 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
target/linux/mvebu/patches-5.10/317-armada-370-dts-fix-crypto-engine.patch Normal file
View File

@ -0,0 +1,29 @@
--- a/arch/arm/boot/dts/armada-370.dtsi
+++ b/arch/arm/boot/dts/armada-370.dtsi
@@ -234,7 +234,7 @@
clocks = <&gateclk 23>;
clock-names = "cesa0";
marvell,crypto-srams = <&crypto_sram>;
- marvell,crypto-sram-size = <0x7e0>;
+ marvell,crypto-sram-size = <0x800>;
};
};
@@ -255,12 +255,17 @@
* cpuidle workaround.
*/
idle-sram@0 {
+ status = "disabled";
reg = <0x0 0x20>;
};
};
};
};
+&coherencyfab {
+ broken-idle;
+};
+
/*
* Default UART pinctrl setting without RTS/CTS, can be overwritten on
* board level if a different configuration is used.

29
target/linux/mvebu/patches-5.4/320-armada-370-dts-fix-crypto-engine.patch Normal file
View File

@ -0,0 +1,29 @@
--- a/arch/arm/boot/dts/armada-370.dtsi
+++ b/arch/arm/boot/dts/armada-370.dtsi
@@ -234,7 +234,7 @@
clocks = <&gateclk 23>;
clock-names = "cesa0";
marvell,crypto-srams = <&crypto_sram>;
- marvell,crypto-sram-size = <0x7e0>;
+ marvell,crypto-sram-size = <0x800>;
};
};
@@ -255,12 +255,17 @@
* cpuidle workaround.
*/
idle-sram@0 {
+ status = "disabled";
reg = <0x0 0x20>;
};
};
};
};
+&coherencyfab {
+ broken-idle;
+};
+
/*
* Default UART pinctrl setting without RTS/CTS, can be overwritten on
* board level if a different configuration is used.