91 lines
3.3 KiB
Plaintext
91 lines
3.3 KiB
Plaintext
# Copyright (C) 2015-2017 Digi International
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FILESEXTRAPATHS_prepend := "${THISDIR}/${BPN}:"
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SRC_URI += " \
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file://fw_env.config \
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"
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UBOOT_FW_UTILS_PATCHES = " \
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file://0001-tools-env-implement-support-for-environment-encrypti.patch \
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file://0002-Implement-U-Boot-environment-access-functions.patch \
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file://0003-fw_env-add-support-to-unlock-emmc-boot-partition.patch \
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file://0004-tools-env-add-support-to-set-dynamic-location-of-env.patch \
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"
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# Patches from 'meta-swupdate' touch the same files than ours, so we need to
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# force that our patches are applied later. As our layer has more priority than
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# 'meta-swupdate' we need to do the changes to SRC_URI in an anonymous python
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# function instead of a normal '_append' to the SRC_URI variable.
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python() {
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ufw_patches = d.getVar('UBOOT_FW_UTILS_PATCHES', True)
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if ufw_patches:
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src_uri = d.getVar('SRC_URI', True)
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d.setVar('SRC_URI', src_uri + ufw_patches)
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}
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# We do not have a platform defconfig in this version of u-boot, so just use the generic
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# sandbox defconfig, which is enough to build the Linux user-space tool (fw_printenv)
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UBOOT_CONFIG = "sandbox"
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UBOOT_CONFIG[sandbox] = "sandbox_defconfig"
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do_install_append() {
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install -d ${D}${includedir}/libubootenv
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install -m 0644 ${S}/tools/env/ubootenv.h ${D}${includedir}/libubootenv/
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install -m 0644 ${WORKDIR}/fw_env.config ${D}${sysconfdir}/
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}
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pkg_postinst_${PN}() {
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# run the postinst script on first boot
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if [ x"$D" != "x" ]; then
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exit 1
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fi
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CONFIG_FILE="/etc/fw_env.config"
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MMCDEV="$(sed -ne 's,.*root=/dev/mmcblk\([0-9]\)p.*,\1,g;T;p' /proc/cmdline)"
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if [ -n "${MMCDEV}" ]; then
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sed -i -e "s,^/dev/mmcblk[^[:blank:]]\+,/dev/mmcblk${MMCDEV},g" ${CONFIG_FILE}
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fi
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PARTTABLE="/proc/mtd"
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MTDINDEX="$(sed -ne "s/\(^mtd[0-9]\+\):.*\<environment\>.*/\1/g;T;p" ${PARTTABLE} 2>/dev/null)"
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if [ -n "${MTDINDEX}" ]; then
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# Initialize variables for fixed offset values
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# (backwards compatible with old U-Boot)
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ENV_OFFSET="${UBOOT_ENV_OFFSET}"
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ENV_REDUND_OFFSET="${UBOOT_ENV_SIZE}"
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ENV_SIZE="${UBOOT_ENV_SIZE}"
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ERASEBLOCK=""
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NBLOCKS=""
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if [ -f "/proc/device-tree/digi,uboot,dynamic-env" ]; then
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# Update variables for dynamic environment
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# - Both copies starting at the same offset
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ENV_REDUND_OFFSET="${UBOOT_ENV_OFFSET}"
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# - Calculated erase block size
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ERASEBLOCK="$(grep "^${MTDINDEX}:" ${PARTTABLE} | awk '{printf("0x%d",$3)}')"
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# - Calculated number of blocks
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MTDSIZE="$(grep "^${MTDINDEX}:" ${PARTTABLE} | awk '{printf("0x%d",$2)}')"
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NBLOCKS="$(((MTDSIZE - UBOOT_ENV_OFFSET) / ERASEBLOCK))"
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# If a range was provided, calculate the number of
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# blocks in the range and use that number, unless they
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# exceed the total number of blocks available in the
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# whole partition.
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if [ -n "${UBOOT_ENV_RANGE}" ]; then
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RANGE_BLOCKS="$((UBOOT_ENV_RANGE / ERASEBLOCK))"
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[ "${RANGE_BLOCKS}" -lt "${NBLOCKS}" ] && NBLOCKS="${RANGE_BLOCKS}"
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fi
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fi
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# Substitute stub with configuration and calculated values
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sed -i -e "s/##MTDINDEX##/${MTDINDEX}/g" \
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-e "s/##ENV_OFFSET##/${ENV_OFFSET}/g" \
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-e "s/##ENV_REDUND_OFFSET##/${ENV_REDUND_OFFSET}/g" \
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-e "s/##ENV_SIZE##/${ENV_SIZE}/g" \
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-e "s/##ERASEBLOCK##/${ERASEBLOCK}/g" \
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-e "s/##NBLOCKS##/${NBLOCKS}/g" \
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${CONFIG_FILE}
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fi
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}
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COMPATIBLE_MACHINE = "(ccimx6$|ccimx6ul|ccimx8x)"
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