Add logic for booting systems with the RAUC update mechanism. This can be reused by other phytec boards.
Signed-off-by: Leonard Anderweit l.anderweit@phytec.de --- include/env/phytec/rauc.env | 52 +++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 include/env/phytec/rauc.env
diff --git a/include/env/phytec/rauc.env b/include/env/phytec/rauc.env new file mode 100644 index 000000000000..89e17ff70ec6 --- /dev/null +++ b/include/env/phytec/rauc.env @@ -0,0 +1,52 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ + +/* Logic to select a boot partition based on environment variables and switch + * to the other if the boot fails. */ + +doraucboot=0 + +raucbootpart0=1 +raucrootpart0=5 +raucbootpart1=2 +raucrootpart1=6 + +raucinit= + echo Booting RAUC A/B system; + test -n "${BOOT_ORDER}" || env set BOOT_ORDER "system0 system1"; + test -n "${BOOT_system0_LEFT}" || env set BOOT_system0_LEFT 3; + test -n "${BOOT_system1_LEFT}" || env set BOOT_system1_LEFT 3; + env set raucstatus; + for BOOT_SLOT in "${BOOT_ORDER}"; do + if test "x${raucstatus}" != "x"; then + echo Skipping remaing slots!; + elif test "x${BOOT_SLOT}" = "xsystem0"; then + if test ${BOOT_system0_LEFT} -gt 0; then + echo Found valid slot A, ${BOOT_system0_LEFT} attempts remaining; + setexpr BOOT_system0_LEFT ${BOOT_system0_LEFT} - 1; + env set mmcpart ${raucbootpart0}; + env set mmcroot ${raucrootpart0}; + env set raucargs rauc.slot=system0; + env set raucstatus success; + fi; + elif test "x${BOOT_SLOT}" = "xsystem1"; then + if test ${BOOT_system1_LEFT} -gt 0; then + echo Found valid slot B, ${BOOT_system1_LEFT} attempts remaining; + setexpr BOOT_system1_LEFT ${BOOT_system1_LEFT} - 1; + env set mmcpart ${raucbootpart1}; + env set mmcroot ${raucrootpart1}; + env set raucargs rauc.slot=system1; + env set raucstatus success; + fi; + fi; + done; + if test -n "${raucstatus}"; then + env delete raucstatus; + env save; + else + echo WARN: No valid slot found; + env set BOOT_system0_LEFT 3; + env set BOOT_system1_LEFT 3; + env delete raucstatus; + env save; + reset; + fi;