From cf71ae0b18d0526b54d167139d6ea092655d2dd4 Mon Sep 17 00:00:00 2001 From: Chanh Nguyen Date: Fri, 11 Jun 2021 17:05:38 +0700 Subject: meta-ampere: Support software workaround for PSU redundancy issue When system only uses single PSU ( ex : PSU1 ) to power ON normal 12V, HSC2 will be trigged Fault event (FET health). At this time, plugging in PSU2 in system, the PSU2 won't deliver power to +12V_MB because HSC2 is protected by Fault event. Due to HSC2 protected, the PSU redundancy mechanism can't be created. Once PSU1 is plugged out at this moment, system will crash ( reset ) because +12V_MB dropped. Support detecting PSU plug event and reset the Hot-Swap feature by disabling and then enabling again it through PMBUS command to clear the event. Tested: 1. Plug only PSU1 to power ON system (12V) 2. Wait until host is booted, check POUT: $ ipmitool sdr | grep "POUT" PSU1_POUT | 112 Watts | ok PSU2_POUT | 0 Watts | ok 3. Plug in PSU2 in system, check POUT: $ ipmitool sdr | grep "POUT" PSU1_POUT | 64 Watts | ok PSU2_POUT | 48 Watts | ok 4. Unplug AC power PSU1, check POUT: $ ipmitool sdr | grep "POUT" PSU1_POUT | 0 Watts | ok PSU2_POUT | 128 Watts | ok 5. Plug in AC power PSU1, check POUT: $ ipmitool sdr | grep "POUT" PSU1_POUT | 80 Watts | ok PSU2_POUT | 64 Watts | ok 6. Repeat 1. to 5. with PSU2. Signed-off-by: Chanh Nguyen Change-Id: Ia6e00cd7b08de48059f2450e7eaf108418d0a026 --- .../recipes-phosphor/gpio/psu-hotswap-reset.bb | 33 ++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 meta-ampere/meta-jade/recipes-phosphor/gpio/psu-hotswap-reset.bb (limited to 'meta-ampere/meta-jade/recipes-phosphor/gpio/psu-hotswap-reset.bb') diff --git a/meta-ampere/meta-jade/recipes-phosphor/gpio/psu-hotswap-reset.bb b/meta-ampere/meta-jade/recipes-phosphor/gpio/psu-hotswap-reset.bb new file mode 100644 index 000000000..9f7b24f00 --- /dev/null +++ b/meta-ampere/meta-jade/recipes-phosphor/gpio/psu-hotswap-reset.bb @@ -0,0 +1,33 @@ +SUMMARY = "Ampere Computing LLC PSU Hot Swap Reseting application" +PR = "r1" +LICENSE = "Apache-2.0" +LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/Apache-2.0;md5=89aea4e17d99a7cacdbeed46a0096b10" + +inherit obmc-phosphor-systemd +inherit allarch + +DEPENDS += "virtual/obmc-gpio-monitor" +RDEPENDS_${PN} += "virtual/obmc-gpio-monitor" + +OBMC_PSU_MONITOR_INSTANCES = "PSU1_B25 PSU2_B25" + +# Copies config file having arguments for psu +# via GPIO assertion +SYSTEMD_ENVIRONMENT_FILE_${PN} +="obmc/gpio/PSU1_B25 \ + obmc/gpio/PSU2_B25 \ + " +SYSTEMD_SERVICE_${PN} ?= "psu1_hotswap_reset.service psu2_hotswap_reset.service" + +SRC_URI += "file://ampere_psu_reset_hotswap.sh" + +do_install() { + install -d ${D}${bindir} + install -m 0755 ${WORKDIR}/ampere_psu_reset_hotswap.sh \ + ${D}${bindir}/ampere_psu_reset_hotswap.sh +} + +GPIO_MONITOR_TMPL = "phosphor-gpio-monitor@.service" +GPIO_MONITOR_TGTFMT = "phosphor-gpio-monitor@{0}.service" +TGT = "multi-user.target" +PSU_MONITOR_FMT = "../${GPIO_MONITOR_TMPL}:${TGT}.requires/${GPIO_MONITOR_TGTFMT}" +SYSTEMD_LINK_${PN} += "${@compose_list(d, 'PSU_MONITOR_FMT', 'OBMC_PSU_MONITOR_INSTANCES', 'OBMC_HOST_INSTANCES')}" -- cgit v1.2.3