[PATCH linux dev-6.1] ARM: dts: aspeed: bonnell: Add reserved memory for TPM event log

Eddie James eajames at linux.ibm.com
Sat Jun 17 00:26:10 AEST 2023


Trusted boot support requires the platform event log passed up
from the bootloader. In U-Boot, this can now be accomplished with
a reserved memory region, so add a region for this purpose to the
Bonnell BMC devicetree.

Signed-off-by: Eddie James <eajames at linux.ibm.com>
---
 arch/arm/boot/dts/aspeed-bmc-ibm-bonnell.dts | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/aspeed-bmc-ibm-bonnell.dts b/arch/arm/boot/dts/aspeed-bmc-ibm-bonnell.dts
index 79516dc21c01..c65688aed661 100644
--- a/arch/arm/boot/dts/aspeed-bmc-ibm-bonnell.dts
+++ b/arch/arm/boot/dts/aspeed-bmc-ibm-bonnell.dts
@@ -61,6 +61,11 @@ reserved-memory {
 		#size-cells = <1>;
 		ranges;
 
+		event_log: tcg_event_log at b3d00000 {
+			no-map;
+			reg = <0xb3d00000 0x100000>;
+		};
+
 		ramoops at b3e00000 {
 			compatible = "ramoops";
 			reg = <0xb3e00000 0x200000>; /* 16 * (4 * 0x8000) */
@@ -788,8 +793,9 @@ &i2c12 {
 	status = "okay";
 
 	tpm at 2e {
-		compatible = "nuvoton,npct75x";
+		compatible = "nuvoton,npct75x", "tcg,tpm-tis-i2c";
 		reg = <0x2e>;
+		memory-region = <&event_log>;
 	};
 
 	eeprom at 50 {
-- 
2.39.3



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