Add CONFIG_CPU_MICROCODE_CBFS_NONE=y to KGPE-D16 Coreboot configs. …

…This disables microcode being included and loaded by Coreboot because of a current issue in which newer kernels panic when doing so. Added note to KGPE-D16 configs about the current microcode bug, why microcode is not included and encouraging AMD Opteron 6300 series users to make sure their operating system loads microcode.
linuxboot · Jan 6, 2021 · 33b8a03 · 33b8a03
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commit 33b8a03
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diff --git a/boards/kgpe-d16_server-whiptail/kgpe-d16_server-whiptail.config b/boards/kgpe-d16_server-whiptail/kgpe-d16_server-whiptail.config
@@ -12,6 +12,10 @@
 # - Please contribute documentation on heads-wiki
 # - Please support https://github.com/osresearch/heads/issues/719
 # - Disk Unlock Key released by TPM since not deactivated
+# - Currently, no microcode is included with coreboot. This is due to to a bug
+#   in which newer Linux releases panics when the newest microcode is loaded by
+#   coreboot. AMD Opteron 6300 series users are STRONGLY encouraged to make
+#   sure their operating system loads microcode updates.
 
 export CONFIG_COREBOOT=y
 export CONFIG_COREBOOT_VERSION=4.11

diff --git a/boards/kgpe-d16_server/kgpe-d16_server.config b/boards/kgpe-d16_server/kgpe-d16_server.config
@@ -7,6 +7,10 @@
 # - ASpeed text output given on VGA
 # - All console output rerirected to sttyS0
 # - TPM support in romstage (not bootblock) with TPM SLB9635 TT 1.2 by Infineon
+# - Currently, no microcode is included with coreboot. This is due to to a bug
+#   in which newer Linux releases panics when the newest microcode is loaded by
+#   coreboot. AMD Opteron 6300 series users are STRONGLY encouraged to make
+#   sure their operating system loads microcode updates.
 #
 # - To connect to BMC: https://github.com/osresearch/heads/issues/134#issuecomment-368922440
 # - Please contribute documentation on heads-wiki

diff --git a/boards/kgpe-d16_workstation-usb_keyboard/kgpe-d16_workstation-usb_keyboard.config b/boards/kgpe-d16_workstation-usb_keyboard/kgpe-d16_workstation-usb_keyboard.config
@@ -6,6 +6,10 @@
 # - TPM support in romstage (not bootblock) with TPM SLB9635 TT 1.2 by Infineon
 # - USB ealy support activated for USB keyboard
 # - Disk Unlock Key released by TPM since not deactivated
+# - Currently, no microcode is included with coreboot. This is due to to a bug
+#   in which newer Linux releases panics when the newest microcode is loaded by
+#   coreboot. AMD Opteron 6300 series users are STRONGLY encouraged to make
+#   sure their operating system loads microcode updates.
 
 export CONFIG_COREBOOT=y
 export CONFIG_COREBOOT_VERSION=4.11

diff --git a/boards/kgpe-d16_workstation/kgpe-d16_workstation.config b/boards/kgpe-d16_workstation/kgpe-d16_workstation.config
@@ -9,6 +9,10 @@
 # - Please contribute documentation on heads-wiki
 # - Please support https://github.com/osresearch/heads/issues/719
 # - Disk Unlock Key released by TPM since not deactivated
+# - Currently, no microcode is included with coreboot. This is due to to a bug
+#   in which newer Linux releases panics when the newest microcode is loaded by
+#   coreboot. AMD Opteron 6300 series users are STRONGLY encouraged to make
+#   sure their operating system loads microcode updates.
 
 
 export CONFIG_COREBOOT=y

diff --git a/config/coreboot-kgpe-d16_server-whiptail.config b/config/coreboot-kgpe-d16_server-whiptail.config
@@ -15,3 +15,4 @@ CONFIG_PAYLOAD_LINUX=y
 CONFIG_PAYLOAD_FILE="../../build/kgpe-d16_server-whiptail/bzImage"
 CONFIG_LINUX_COMMAND_LINE="nohz=on console=tty0 earlyprintk=tty0"
 CONFIG_LINUX_INITRD="../../build/kgpe-d16_server-whiptail/initrd.cpio.xz"
+CONFIG_CPU_MICROCODE_CBFS_NONE=y
diff --git a/config/coreboot-kgpe-d16_server.config b/config/coreboot-kgpe-d16_server.config
@@ -15,3 +15,4 @@ CONFIG_PAYLOAD_LINUX=y
 CONFIG_LINUX_COMMAND_LINE="nohz=on console=ttyS1,115200n8 earlyprintk=ttyS1,115200"
 CONFIG_PAYLOAD_FILE="../../build/kgpe-d16_server/bzImage"
 CONFIG_LINUX_INITRD="../../build/kgpe-d16_server/initrd.cpio.xz"
+CONFIG_CPU_MICROCODE_CBFS_NONE=y
diff --git a/config/coreboot-kgpe-d16_workstation-usb_keyboard.config b/config/coreboot-kgpe-d16_workstation-usb_keyboard.config
@@ -15,3 +15,4 @@ CONFIG_PAYLOAD_LINUX=y
 CONFIG_PAYLOAD_FILE="../../build/kgpe-d16_workstation-usb_keyboard/bzImage"
 CONFIG_LINUX_COMMAND_LINE="nohz=on console=tty0 earlyprintk=tty0"
 CONFIG_LINUX_INITRD="../../build/kgpe-d16_workstation-usb_keyboard/initrd.cpio.xz"
+CONFIG_CPU_MICROCODE_CBFS_NONE=y
diff --git a/config/coreboot-kgpe-d16_workstation.config b/config/coreboot-kgpe-d16_workstation.config
@@ -15,3 +15,4 @@ CONFIG_PAYLOAD_LINUX=y
 CONFIG_PAYLOAD_FILE="../../build/kgpe-d16_workstation/bzImage"
 CONFIG_LINUX_COMMAND_LINE="nohz=on console=tty0 earlyprintk=tty0"
 CONFIG_LINUX_INITRD="../../build/kgpe-d16_workstation/initrd.cpio.xz"
+CONFIG_CPU_MICROCODE_CBFS_NONE=y