Bump buildroot to 2019.02

bsp/buildroot/board/pc/genimage-efi.cfg

@@ -1,31 +0,0 @@
-image efi-part.vfat {
-  vfat {
-    file startup.nsh {
-      image = "efi-part/startup.nsh"
-    }
-    file EFI {
-      image = "efi-part/EFI"
-    }
-    file bzImage {
-      image = "bzImage"
-    }
-  }
-  size = 16M
-}
-
-image disk.img {
-
-  hdimage {
-  }
-
-  partition boot {
-    partition-type = 0xEF
-    image = "efi-part.vfat"
-  }
-
-  partition root {
-    partition-type = 0x83
-    image = "rootfs.ext2"
-  }
-
-}

bsp/buildroot/board/pc/linux.config

@@ -82,3 +82,4 @@ CONFIG_EXT4_FS=y
 CONFIG_FUSE_FS=y
 CONFIG_TMPFS_POSIX_ACL=y
 CONFIG_SQUASHFS=y
+CONFIG_UNWINDER_FRAME_POINTER=y

bsp/buildroot/board/pc/post-build.sh

@@ -0,0 +1,10 @@
+#!/bin/sh
+
+set -e
+
+BOARD_DIR=$(dirname "$0")
+
+cp -f "$BOARD_DIR/grub-bios.cfg" "$TARGET_DIR/boot/grub/grub.cfg"
+
+# Copy grub 1st stage to binaries, required for genimage
+cp -f "$HOST_DIR/lib/grub/i386-pc/boot.img" "$BINARIES_DIR"

bsp/buildroot/board/pc/post-image-efi-gpt.sh

@@ -0,0 +1,62 @@
+#!/bin/sh
+
+set -e
+
+cd ${BINARIES_DIR}
+
+# GPT partition type UUIDs
+esp_type=c12a7328-f81f-11d2-ba4b-00a0c93ec93b
+linux_type=44479540-f297-41b2-9af7-d131d5f0458a
+
+# Partition UUIDs
+efi_part_uuid=$(uuidgen)
+root_part_uuid=$(uuidgen)
+
+# Boot partition offset and size, in 512-byte sectors
+efi_part_start=64
+efi_part_size=32768
+
+# Rootfs partition offset and size, in 512-byte sectors
+root_part_start=$(( efi_part_start + efi_part_size ))
+root_part_size=$(( $(stat -c %s rootfs.ext2) / 512 ))
+
+first_lba=34
+last_lba=$(( root_part_start + root_part_size ))
+
+# Disk image size in 512-byte sectors
+image_size=$(( last_lba + first_lba ))
+
+cat > efi-part/EFI/BOOT/grub.cfg <<EOF
+set default="0"
+set timeout="5"
+
+menuentry "Buildroot" {
+	linux /bzImage root=PARTUUID=$root_part_uuid rootwait console=tty1
+}
+EOF
+
+# Create EFI system partition
+rm -f efi-part.vfat
+dd if=/dev/zero of=efi-part.vfat bs=512 count=0 seek=$efi_part_size
+mkdosfs  efi-part.vfat
+mcopy -bsp -i efi-part.vfat efi-part/startup.nsh ::startup.nsh
+mcopy -bsp -i efi-part.vfat efi-part/EFI ::EFI
+mcopy -bsp -i efi-part.vfat bzImage ::bzImage
+
+rm -f disk.img
+dd if=/dev/zero of=disk.img bs=512 count=0 seek=$image_size
+
+sfdisk disk.img <<EOF
+label: gpt
+label-id: $(uuidgen)
+device: /dev/foobar0
+unit: sectors
+first-lba: $first_lba
+last-lba: $last_lba
+
+/dev/foobar0p1 : start=$efi_part_start,  size=$efi_part_size,  type=$esp_type,   uuid=$efi_part_uuid,  name="efi-part.vfat"
+/dev/foobar0p2 : start=$root_part_start, size=$root_part_size, type=$linux_type, uuid=$root_part_uuid, name="rootfs.ext2"
+EOF
+
+dd if=efi-part.vfat of=disk.img bs=512 count=$efi_part_size seek=$efi_part_start conv=notrunc
+dd if=rootfs.ext2   of=disk.img bs=512 count=$root_part_size seek=$root_part_start conv=notrunc

bsp/buildroot/board/pc/post-image.sh

@@ -1,14 +0,0 @@
-#!/bin/sh
-
-BOARD_DIR="$(dirname $0)"
-
-# Detect boot strategy, EFI or BIOS
-if [ -f ${BINARIES_DIR}/efi-part/startup.nsh ]; then
-  cp -f ${BOARD_DIR}/grub-efi.cfg ${BINARIES_DIR}/efi-part/EFI/BOOT/grub.cfg
-else
-  cp -f ${BOARD_DIR}/grub-bios.cfg ${TARGET_DIR}/boot/grub/grub.cfg
-  # Copy grub 1st stage to binaries, required for genimage
-  cp -f ${HOST_DIR}/lib/grub/i386-pc/boot.img ${BINARIES_DIR}
-fi
-
-exit $?

bsp/buildroot/board/pc/readme.txt

@@ -9,7 +9,7 @@ Bare PC sample config
 
   $ make pc_x86_64_bios_defconfig
 
-  Or for EFI:
+  For EFI-based boot strategy on a GPT-partitioned disk:
 
   $ make pc_x86_64_efi_defconfig