Initial commit
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@@ -0,0 +1,33 @@
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SUMMARY = "Romulus AVSBus control"
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PR = "r1"
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LICENSE = "Apache-2.0"
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LIC_FILES_CHKSUM = "file://${COREBASE}/meta/files/common-licenses/Apache-2.0;md5=89aea4e17d99a7cacdbeed46a0096b10"
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inherit obmc-phosphor-systemd
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RDEPENDS:${PN} += "i2c-tools bash"
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S = "${WORKDIR}"
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SRC_URI += "file://avsbus-enable.sh \
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file://avsbus-disable.sh"
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do_install() {
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install -d ${D}${bindir}
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install -m 0755 ${WORKDIR}/avsbus-disable.sh \
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${D}${bindir}/avsbus-disable.sh
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install -m 0755 ${WORKDIR}/avsbus-enable.sh \
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${D}${bindir}/avsbus-enable.sh
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}
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TMPL_EN= "avsbus-enable@.service"
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TMPL_DIS= "avsbus-disable@.service"
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INSTFMT_EN= "avsbus-enable@{0}.service"
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INSTFMT_DIS= "avsbus-disable@{0}.service"
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TGTFMT = "obmc-chassis-poweron@{0}.target"
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FMT_EN = "../${TMPL_EN}:${TGTFMT}.requires/${INSTFMT_EN}"
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FMT_DIS = "../${TMPL_DIS}:${TGTFMT}.requires/${INSTFMT_DIS}"
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SYSTEMD_SERVICE:${PN} += "${TMPL_EN}"
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SYSTEMD_LINK:${PN} += "${@compose_list(d, 'FMT_EN', 'OBMC_CHASSIS_INSTANCES')}"
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SYSTEMD_SERVICE:${PN} += "${TMPL_DIS}"
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SYSTEMD_LINK:${PN} += "${@compose_list(d, 'FMT_DIS', 'OBMC_CHASSIS_INSTANCES')}"
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@@ -0,0 +1,16 @@
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#!/bin/sh
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i2cset -y 4 0x70 0x00 0x00 b # VDD 0 - PAGE set
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i2cset -y 4 0x70 0x01 0x80 b # VDD 0
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i2cset -y 4 0x70 0x00 0x01 b # VCS 0 - PAGE set
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i2cset -y 4 0x70 0x01 0x80 b # VCS 0
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i2cset -y 4 0x70 0x00 0x00 b # VCS 0 - PAGE reset
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i2cset -y 4 0x73 0x00 0x00 b # VDN 0 - PAGE set
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i2cset -y 4 0x73 0x01 0x80 b # VDN 0
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i2cset -y 5 0x70 0x00 0x00 b # VDD 1 - PAGE set
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i2cset -y 5 0x70 0x01 0x80 b # VDD 1
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i2cset -y 5 0x70 0x00 0x01 b # VCS 1 - PAGE set
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i2cset -y 5 0x70 0x01 0x80 b # VCS 1
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i2cset -y 5 0x70 0x00 0x00 b # VCS 1 - PAGE reset
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i2cset -y 5 0x73 0x00 0x00 b # VDN 1 - PAGE set
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i2cset -y 5 0x73 0x01 0x80 b # VDN 1
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@@ -0,0 +1,15 @@
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[Unit]
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Description=Disable the AVS bus on the VRMs
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Wants=obmc-power-start@.service
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After=obmc-power-start@.service
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Before=vrm-control@%i.service
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Conflicts=obmc-chassis-poweroff@%i.target
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ConditionPathExists=!/run/openbmc/chassis@%i-on
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[Service]
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ExecStart=/usr/bin/avsbus-disable.sh
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Type=oneshot
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RemainAfterExit=yes
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[Install]
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WantedBy=obmc-chassis-poweron@%i.target
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#!/bin/sh
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i2cset -y 4 0x70 0x00 0x00 b # VDD 0 - PAGE set
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i2cset -y 4 0x70 0x01 0xB0 b # VDD 0
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i2cset -y 4 0x70 0x00 0x01 b # VCS 0 - PAGE set
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i2cset -y 4 0x70 0x01 0xB0 b # VCS 0
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i2cset -y 4 0x70 0x00 0x00 b # VCS 0 - PAGE reset
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i2cset -y 4 0x73 0x00 0x00 b # VDN 0 - PAGE set
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i2cset -y 4 0x73 0x01 0xB0 b # VDN 0
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i2cset -y 5 0x70 0x00 0x00 b # VDD 1 - PAGE set
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i2cset -y 5 0x70 0x01 0xB0 b # VDD 1
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i2cset -y 5 0x70 0x00 0x01 b # VCS 1 - PAGE set
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i2cset -y 5 0x70 0x01 0xB0 b # VCS 1
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i2cset -y 5 0x70 0x00 0x00 b # VCS 1 - PAGE reset
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i2cset -y 5 0x73 0x00 0x00 b # VDN 1 - PAGE set
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i2cset -y 5 0x73 0x01 0xB0 b # VDN 1
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[Unit]
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Description=Enable the AVS bus on VRMs
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Wants=vrm-control@%i.service
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After=vrm-control@%i.service
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Conflicts=obmc-chassis-poweroff@%i.target
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ConditionPathExists=!/run/openbmc/chassis@%i-on
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[Service]
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ExecStart=/usr/bin/avsbus-enable.sh
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Type=oneshot
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RemainAfterExit=yes
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[Install]
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WantedBy=obmc-chassis-poweron@%i.target
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@@ -0,0 +1,27 @@
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SUMMARY = "Romulus VRM Overrides"
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DESCRIPTION = "Sets Rolumus VRMs to custom voltages"
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PR = "r1"
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LICENSE = "Apache-2.0"
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LIC_FILES_CHKSUM = "file://${COREBASE}/meta/files/common-licenses/Apache-2.0;md5=89aea4e17d99a7cacdbeed46a0096b10"
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inherit obmc-phosphor-systemd
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RDEPENDS:${PN} += "i2c-tools bash"
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S = "${WORKDIR}"
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SRC_URI += "file://vrm-control.sh \
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file://vrm.sh"
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do_install() {
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install -d ${D}${bindir}
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install -m 0755 ${WORKDIR}/vrm.sh ${D}${bindir}/vrm.sh
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install -m 0755 ${WORKDIR}/vrm-control.sh ${D}${bindir}/vrm-control.sh
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}
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TMPL = "vrm-control@.service"
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INSTFMT = "vrm-control@{0}.service"
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TGTFMT = "obmc-chassis-poweron@{0}.target"
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FMT = "../${TMPL}:${TGTFMT}.requires/${INSTFMT}"
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SYSTEMD_SERVICE:${PN} += "${TMPL}"
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SYSTEMD_LINK:${PN} += "${@compose_list(d, 'FMT', 'OBMC_CHASSIS_INSTANCES')}"
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@@ -0,0 +1,137 @@
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#!/bin/bash
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# #########################################################
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# Script to run on Romulus BMC to read/set vrm voltages
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# #########################################################
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function d2v() {
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# usage: d2v <decimal volts>
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echo "$1" | awk '{print $1 * 256 + .5}' | cut -d '.' -f 1
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}
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# #########################################################
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function v2d() {
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# usage: v2d <hex val>
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printf " %0.3fV" "$(echo "$1" | awk '{print $1 / 256}')"
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}
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# #########################################################
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function i2d() {
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# usage: i2d <hex val> <current divisor>
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# parse current mantisa and exponent
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# format: SEEE ESMM MMMM MMMM
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e=$(( $1/0x800 ))
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esign=$(( e/0x10 ))
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m=$(( $1 & 0x07FF ))
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msign=$(( m/0x0400 ))
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if [ $msign -eq 1 ]
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then
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# calc ones compliment
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m=$(( (m^0x07FF)+1 ))
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m=$(( -m ))
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fi
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if [ $esign -eq 1 ]
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then
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# calc ones compliment
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e=$(( (e^0x1F)+1 ))
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e=$(( -e ))
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fi
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printf " %0.3fA\n" "$(echo $m $e "$2" | awk '{print ($1 * 2^$2) / $3}')"
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}
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# #########################################################
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function rw_vc() {
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# usage: rw_vc <bus> <addr> <current divisor> <channel> <value>
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# select channel
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if [ "$4" != "x" ]
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then
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i2cset -y "$1" "$2" 0 "$4" b
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fi
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# write new voltage set point
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if [ ! -e "$5" ]
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then
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i2cset -y "$1" "$2" 0x21 "$(d2v "$5")" w
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fi
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# print voltage set point
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v2d "$(i2cget -y "$1" "$2" 0x21 w)"
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# print voltage
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v2d "$(i2cget -y "$1" "$2" 0x8B w)"
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# print current
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i2d "$(i2cget -y "$1" "$2" 0x8C w)" "$3"
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# default back to channel 0
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if [ "$4" != "x" ]
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then
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i2cset -y "$1" "$2" 0 0 b
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fi
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}
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# #########################################################
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# Main
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if [ -e "$1" ]
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then
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$0 vdda vcsa vdna vioa vddb vcsb vdnb viob
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exit
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fi
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if [ "$1" == "-h" ]
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then
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echo " Usage: vrm [<rail>=[value] [<rail>=[value]] ...]"
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echo " rail: vdda vcsa vdna vioa vddb vcsb vdnb viob"
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echo " value: volts"
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echo
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echo " e.g., vrm vioa=1.0 viob=1.0"
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echo
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exit
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fi
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echo "rail set read current"
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echo "------- ------- ------- -------"
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for param in "${@:1}"
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do
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rail=$(echo "$param" | cut -d'=' -f 1)
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val=$(echo "${param}=" | cut -d'=' -f 2)
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echo -n "$rail"
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case "$rail" in
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vdda)
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rw_vc 4 0x70 2 0 "$val"
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;;
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vddb)
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rw_vc 5 0x70 2 0 "$val"
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;;
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vcsa)
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rw_vc 4 0x70 4 1 "$val"
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;;
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vcsb)
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rw_vc 5 0x70 4 1 "$val"
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;;
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vdna)
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rw_vc 4 0x73 2 0 "$val"
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;;
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vdnb)
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rw_vc 5 0x73 2 0 "$val"
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;;
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vioa)
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rw_vc 4 0x73 2 1 "$val"
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;;
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viob)
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rw_vc 5 0x73 2 1 "$val"
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;;
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*)
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echo " non-existant"
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esac
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done
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@@ -0,0 +1,15 @@
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[Unit]
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Description=Apply voltage overrides to VRMs
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Wants=avsbus-disable@%i.service
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After=avsbus-disable@%i.service
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Before=avsbus-enable@%i.service
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Conflicts=obmc-chassis-poweroff@%i.target
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ConditionPathExists=!/run/openbmc/chassis@%i-on
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[Service]
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ExecStart=/usr/bin/vrm.sh
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Type=oneshot
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RemainAfterExit=yes
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[Install]
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WantedBy=obmc-chassis-poweron@%i.target
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@@ -0,0 +1,3 @@
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#!/bin/sh
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vrm-control.sh vdna=0.9 vdnb=0.9
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