[WIP] Lenovo ThinkPad T520 support

blobs/t520/extract.sh

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+#!/bin/bash
+
+function printusage {
+  echo "Usage: $0 -f <romdump> -m <me_cleaner>(optional) -i <ifdtool>(optional)"
+  exit 0
+}
+
+BLOBDIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+
+if [ "$#" -eq 0 ]; then printusage; fi
+
+while getopts ":f:m:i:" opt; do
+  case $opt in
+    f)
+      FILE="$OPTARG"
+      ;;
+    m)
+      if [ -x "$OPTARG" ]; then
+        MECLEAN="$OPTARG"
+      fi
+      ;;
+    i)
+      if [ -x "$OPTARG" ]; then
+        IFDTOOL="$OPTARG"
+      fi
+      ;;
+  esac
+done
+
+if [ -z "$MECLEAN" ]; then
+  MECLEAN=`command -v $BLOBDIR/../../build/coreboot-*/util/me_cleaner/me_cleaner.py 2>&1|head -n1`
+  if [ -z "$MECLEAN" ]; then
+    echo "me_cleaner.py required but not found or specified with -m. Aborting."
+    exit 1;
+  fi
+fi
+
+if [ -z "$IFDTOOL" ]; then
+  IFDTOOL=`command -v $BLOBDIR/../../build/coreboot-*/util/ifdtool/ifdtool 2>&1|head -n1`
+  if [ -z "$IFDTOOL" ]; then
+    echo "ifdtool required but not found or specified with -m. Aborting."
+    exit 1;
+  fi
+fi
+
+echo "FILE: $FILE"
+echo "ME: $MECLEAN"
+echo "IFD: $IFDTOOL"
+
+bioscopy=$(mktemp)
+extractdir=$(mktemp -d)
+
+cp "$FILE" $bioscopy
+
+cd "$extractdir"
+$IFDTOOL -x $bioscopy
+cp "$extractdir/flashregion_3_gbe.bin" "$BLOBDIR/gbe.bin"
+$MECLEAN -O "$BLOBDIR/me.bin" -r -t "$extractdir/flashregion_2_intel_me.bin"
+$IFDTOOL -n "$BLOBDIR/layout.txt" $bioscopy
+$IFDTOOL -x $bioscopy.new
+cp "$extractdir/flashregion_0_flashdescriptor.bin" "$BLOBDIR/ifd.bin"
+
+rm "$bioscopy"
+rm "$bioscopy.new"
+rm -r "$extractdir"

blobs/t520/layout.txt

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+00000000:00000fff fd
+00018000:007fffff bios
+00003000:00017fff me
+00001000:00002fff gbe

blobs/t520/readme.md

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+To build for T520, we need to have the following files in this folder:
+* `me.bin` - ME binary that has been stripped and truncated with me_cleaner
+* `gbe.bin` - Network card blob from the original firmware
+* `ifd.bin` - Flash layout file has been provided as text
+
+To get the binaries, start with a copy of the original Lenovo firmware image.
+If you do not have one already, you can read one out from the laptops SPI flash with flashrom
+
+```
+flashrom -p <programmer> -r original.bin
+```
+
+Set `<programmer>` to the flashrom programmer type that you will use (for example, `linux_spi:dev=/dev/spidev0.0` on a Raspberry Pi).
+
+Once you have the image, the provided extraction script will extract the files needed.
+
+```
+./extract.sh -f <romdump>
+```
+
+Use the options '-m' and '-i' to provide me_cleaner and ifdtool if they can not be located automatically.
+
+The flash layout will be automatically adjusted and the ME image cleaned and truncated.
+
+You can now compile the image with:
+
+```
+make BOARD=t520
+```

boards/t520/t520.config

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+# Configuration for a T520 running Qubes and other OS, T520 is identical to X230 on the Linux Side of things.
+export CONFIG_COREBOOT=y
+export CONFIG_COREBOOT_VERSION=4.8.1
+export CONFIG_LINUX_VERSION=4.14.62
+
+CONFIG_COREBOOT_CONFIG=config/coreboot-t520.config
+CONFIG_LINUX_CONFIG=config/linux-x230.config
+
+CONFIG_CRYPTSETUP=y
+CONFIG_FLASHROM=y
+CONFIG_FLASHTOOLS=y
+CONFIG_GPG2=y
+CONFIG_KEXEC=y
+CONFIG_UTIL_LINUX=y
+CONFIG_LVM2=y
+CONFIG_MBEDTLS=y
+CONFIG_PCIUTILS=y
+CONFIG_POPT=y
+CONFIG_QRENCODE=y
+CONFIG_TPMTOTP=y
+CONFIG_DROPBEAR=y
+
+CONFIG_CAIRO=y
+CONFIG_FBWHIPTAIL=y
+
+CONFIG_LINUX_USB=y
+CONFIG_LINUX_E1000E=y
+
+export CONFIG_TPM=y
+export CONFIG_BOOTSCRIPT=/bin/gui-init
+export CONFIG_BOOT_REQ_HASH=n
+export CONFIG_BOOT_REQ_ROLLBACK=n
+export CONFIG_BOOT_KERNEL_ADD="intel_iommu=on intel_iommu=igfx_off"
+export CONFIG_BOOT_KERNEL_REMOVE="quiet"
+export CONFIG_BOOT_DEV="/dev/sda1"
+export CONFIG_BOOT_GUI_MENU_NAME="ThinkPad T520 Heads Boot Menu"
+export CONFIG_WARNING_BG_COLOR="--background-gradient 0 0 0 150 125 0"
+export CONFIG_ERROR_BG_COLOR="--background-gradient 0 0 0 150 0 0"
+export CONFIG_FLASHROM_OPTIONS="--force --noverify-all -p internal --ifd --image bios"

config/coreboot-t520.config

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+CONFIG_LOCALVERSION="heads"
+CONFIG_ANY_TOOLCHAIN=y
+# CONFIG_INCLUDE_CONFIG_FILE is not set
+# CONFIG_COLLECT_TIMESTAMPS is not set
+CONFIG_USE_BLOBS=y
+CONFIG_MEASURED_BOOT=y
+CONFIG_VENDOR_LENOVO=y
+CONFIG_CBFS_SIZE=0x750000
+CONFIG_ONBOARD_VGA_IS_PRIMARY=y
+CONFIG_HAVE_IFD_BIN=y
+CONFIG_HAVE_ME_BIN=y
+CONFIG_HAVE_GBE_BIN=y
+CONFIG_IFD_BIN_PATH="../../blobs/t520/ifd.bin"
+CONFIG_ME_BIN_PATH="../../blobs/t520/me.bin"
+CONFIG_BOARD_LENOVO_T520=y
+CONFIG_DRIVERS_PS2_KEYBOARD=y
+CONFIG_NO_POST=y
+CONFIG_GBE_BIN_PATH="../../blobs/t520/gbe.bin"
+CONFIG_CONSOLE_CBMEM_BUFFER_SIZE=0x80000
+CONFIG_DEFAULT_CONSOLE_LOGLEVEL_5=y
+CONFIG_PAYLOAD_LINUX=y
+CONFIG_PAYLOAD_FILE="../../build/t520/bzImage"
+CONFIG_LINUX_COMMAND_LINE="intel_iommu=igfx_off quiet loglevel=3"
+CONFIG_LINUX_INITRD="../../build/t520/initrd.cpio.xz"
+CONFIG_DEBUG_SMM_RELOCATION=y