On Fri, Jan 16, 2026 at 12:39:47PM +0530, Varadarajan Narayanan wrote: > On Tue, Jan 13, 2026 at 08:42:44AM -0600, Tom Rini wrote: > > On Tue, Jan 13, 2026 at 04:08:35PM +0530, Varadarajan Narayanan wrote: > > > > > Using the 'reboot edl' command in Linux, the platform can reboot to the > > > Emergency Download mode. Implement the same for U-Boot. > > > > Have you used buildman's size checking options before? If not, > > No. > > > https://source.denx.de/u-boot/u-boot-extras/-/blob/master/contrib/trini/u-boot-size-test.sh?ref_type=heads > > may be helpful to you, as it can be a bit tricky at first (but IMHO is > > better than the linux kernel bloat-o-meter). I ask because, what is the > > size impact of these changes on things like say qemu_arm64 and qemu_arm? > > I saw the cmd/ portion is guarded by a new CONFIG option which is good, > > but I wonder about the more generic sysreset changes. Thanks! > > Please see below for u-boot-size-test.sh output > > $ ./u-boot-size-test.sh --board qcom_ipq9574_mmc > Generating board list...Processing #include to produce > configs/socfpga_agilex5_vab_defconfig > Processing #include to produce configs/r8a78000_ironhide_defconfig > . > . > . > Processing #include to produce configs/am69_sk_a72_defconfig > Building 2 commits for 1 boards (1 thread, 16 jobs per thread) > 01: configs: am57xx_hs_evm_defconfig: Reserve EMIF memory used by PPA > 06: qcom_defconfig: enable psci based sysreset > 2 0 0 /2 qcom_ipq9574_mmc > Completed: 2 total built, 2 newly), duration 0:00:13, rate 0.15 > /tmp/qcom_ipq9574_mmc/edl5/boards.cfg is up to date. Nothing to do. > Summary of 2 commits for 1 boards (1 thread, 16 jobs per thread) > 01: configs: am57xx_hs_evm_defconfig: Reserve EMIF memory used by PPA > 06: qcom_defconfig: enable psci based sysreset > aarch64: (for 1/1 boards) all +224.0 data +8.0 text +216.0 > qcom_ipq9574_mmc: all +224 data +8 text +216 > u-boot: add: 2/0, grow: 2/0 bytes: 224/0 (224) > function old new > delta > sysreset_walk_arg - 124 > +124 > do_reset 100 160 > +60 > sysreset_request_arg - 32 > +32 > psci_sysreset_ops 24 32 > +8 > (no errors to report)
OK, so minimal growth on the platforms that would use it. How about platforms which don't? qemu_arm and qemu_arm64 should build the sysreset code in general and that's where I'm most concerned, platforms which aren't using this feature. Thanks. -- Tom
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