initrd/bin/talos-init: send IPL complete message to BMC

BMC awaits this message before it takes control over CPU fans speed. Signed-off-by: Krystian Hebel <[email protected]>
linuxboot · Feb 16, 2023 · b137dd3 · b137dd3
1 parent ffd8ab9
commit b137dd3
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Showing 4 changed files with 15 additions and 3 deletions.
diff --git a/boards/talos-2_server/talos-2_server.config b/boards/talos-2_server/talos-2_server.config
@@ -40,7 +40,7 @@ export CONFIG_USB_KEYBOARD=y
 export CONFIG_BOOT_EXTRA_TTYS="tty0"
 
 export CONFIG_TPM=y
-export CONFIG_BOOTSCRIPT=/bin/gui-init
+export CONFIG_BOOTSCRIPT=/bin/talos-init
 export CONFIG_BOOT_REQ_HASH=n
 export CONFIG_BOOT_REQ_ROLLBACK=n
 export CONFIG_BOOT_KERNEL_REMOVE="quiet"

diff --git a/boards/talos-2_workstation/talos-2_workstation.config b/boards/talos-2_workstation/talos-2_workstation.config
@@ -40,7 +40,7 @@ export CONFIG_USB_KEYBOARD=y
 export CONFIG_BOOT_EXTRA_TTYS="tty0"
 
 export CONFIG_TPM=y
-export CONFIG_BOOTSCRIPT=/bin/gui-init
+export CONFIG_BOOTSCRIPT=/bin/talos-init
 export CONFIG_BOOT_REQ_HASH=n
 export CONFIG_BOOT_REQ_ROLLBACK=n
 export CONFIG_BOOT_KERNEL_REMOVE="quiet"

diff --git a/initrd/bin/talos-init b/initrd/bin/talos-init
@@ -0,0 +1,12 @@
+#!/bin/sh
+# BMC on Talos must be informed that OS has been started in order to enable fan
+# control. This is done by writing 0xFE to I/O ports 0x81 and 0x82 (in that
+# order) through LPC connected to first CPU. LPC I/O space of first CPU is
+# mapped to memory at 0x80060300D0010000, I/O port number has to be added to
+# this address. Write can be performed using busybox's devmem applet.
+
+devmem 0x80060300D0010081 8 254
+devmem 0x80060300D0010082 8 254
+
+# Proceed with standard init path
+exec /bin/gui-init
diff --git a/modules/coreboot b/modules/coreboot
@@ -37,7 +37,7 @@ else ifeq "$(CONFIG_COREBOOT_VERSION)" "4.17"
 	EXTRA_FLAGS := -fdebug-prefix-map=$(pwd)=heads -gno-record-gcc-switches -Wno-error=packed-not-aligned -Wno-error=address-of-packed-member
 else ifeq "$(CONFIG_COREBOOT_VERSION)" "talos_2"
 	coreboot_version = git
-	coreboot_commit_hash = 2207bbcccba31ad89cf21607b0d8d05d8dc47c03
+	coreboot_commit_hash = 88ca8667864ed75490307b23e9744e59c1ce8e41
 	coreboot_repo := https://github.com/Dasharo/coreboot
 
 else