Initial commit

meta-ampere/meta-jade/recipes-ampere/platform/ampere-platform-init/ampere-platform-init.service

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+[Unit]
+Description = Mt.Jade Platform Initialization
+
+[Service]
+Restart=no
+RemainAfterExit=true
+Type=oneshot
+ExecStart=/usr/sbin/ampere_platform_init.sh
+
+[Install]
+WantedBy=sysinit.target

meta-ampere/meta-jade/recipes-ampere/platform/ampere-platform-init/ampere_platform_init.sh

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+#!/bin/bash
+
+# shellcheck source=meta-ampere/meta-jade/recipes-ampere/platform/ampere-utils/gpio-lib.sh
+source /usr/sbin/gpio-lib.sh
+# shellcheck source=meta-ampere/meta-jade/recipes-ampere/platform/ampere-utils/gpio-defs.sh
+source /usr/sbin/gpio-defs.sh
+source /usr/sbin/ampere_uart_console_setup.sh
+
+# Configure to boot from MAIN SPI-HOST
+gpio_configure_output "$SPI0_BACKUP_SEL" 0
+
+gpio_configure_input "$S0_I2C9_ALERT_L"
+gpio_configure_input "$S1_I2C9_ALERT_L"
+gpio_configure_input "$GPIO_BMC_VGA_FRONT_PRES_L"
+gpio_configure_input "$GPIO_S0_VRHOT_L"
+gpio_configure_input "$GPIO_S1_VRHOT_L"
+gpio_configure_output "$BMC_VGA_SEL" 1
+
+# =======================================================
+# Below GPIOs are controlled by other services so just
+# initialize in A/C power only.
+bootstatus=$(cat /sys/class/watchdog/watchdog0/bootstatus)
+if [ "$bootstatus" == '32' ]; then
+	gpio_configure_output "$BMC_GPIOR2_EXT_HIGHTEMP_L" 1
+	gpio_configure_output "$GPIO_BMC_VR_PMBUS_SEL_L" 1
+	gpio_configure_output "$GPIO_BMC_I2C6_RESET_L" 1
+
+	# Initialize OCP register
+	gpio_configure_output "$OCP_MAIN_PWREN" 0
+
+	# Configure SPI-NOR/EEPROM switching
+	gpio_configure_output "$SPI0_PROGRAM_SEL" 0
+	gpio_configure_output "$BMC_I2C_BACKUP_SEL" 1
+	gpio_configure_output "$SPI0_BACKUP_SEL" 0
+
+	# Initialize BMC_SYS_PSON_L, SHD_REQ_L, BMC_SYSRESET_L
+	gpio_configure_output "$SYS_PSON_L" 1
+	gpio_configure_output "$S0_SHD_REQ_L" 1
+	gpio_configure_output "$S0_SYSRESET_L" 1
+	gpio_configure_output "$S1_SYSRESET_L" 1
+
+	# RTC Lock, SPECIAL_BOOT
+	gpio_configure_output "$RTC_LOCK" 0
+	gpio_configure_output "$S0_SPECIAL_BOOT" 0
+	gpio_configure_output "$S1_SPECIAL_BOOT" 0
+fi
+
+gpio_configure_output "$BMC_READY" 1
+# =======================================================
+# Setting uart muxes to BMC as default
+uart_console_setup

meta-ampere/meta-jade/recipes-ampere/platform/ampere-platform-init/ampere_uart_console_setup.sh

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+#!/bin/sh -e
+#
+# Copyright (c) 2020 Ampere Computing LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#	http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# shellcheck disable=SC2039
+# shellcheck disable=SC2112
+# shellcheck disable=SC3010
+# shellcheck disable=SC3030
+# shellcheck disable=SC3054
+
+export obmc_console_tty=("ttyS0" "ttyS1" "ttyS2" "ttyS3")
+
+function get_uart_port()
+{
+   tty=$1
+   case "${tty}" in
+   "ttyS0") uart=1
+   ;;
+   "ttyS1") uart=2
+   ;;
+   "ttyS2") uart=3
+   ;;
+   "ttyS3") uart=4
+   ;;
+   *) echo "Invalid tty passed to $0. Exiting!"
+      exit 1;
+   ;;
+   esac
+   echo $uart
+}
+
+function uart_console_setup()
+{
+   # Default the host routing through the mux to use the BMC (2)
+   # This allows the SoL console in webui, and the ssh port 2200, to work
+   # upon startup. If UART transcievers are installed on the header and required,
+   # this value should be set to 1
+   for tty in "${obmc_console_tty[@]}"; do
+      uart=$(get_uart_port "$tty")
+      if [ "${uart}" -ne 0 ]
+      then
+         /usr/sbin/ampere_uartmux_ctrl.sh "${uart}" 2
+      fi
+   done
+}

meta-ampere/meta-jade/recipes-ampere/platform/ampere-platform-init/ampere_uartmux_ctrl.sh

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+#!/bin/bash
+#
+# Copyright (c) 2021 Ampere Computing LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#	http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Ampere Computing LLC: UART MUX/DEMUX for CPU0 UART0,1,4 and CPU1 UART1
+# Usage: ampere_uartmux_ctrl.sh <CPU UART port number> <UARTx_MODE>
+#        <UARTx_MODE> of 1 sets CPU To HDR_CONN
+#        <UARTx_MODE> of 2 sets BMC to CPU (eg dropbear ssh server on port 2200)
+
+# shellcheck source=meta-ampere/meta-jade/recipes-ampere/platform/ampere-utils/gpio-lib.sh
+source /usr/sbin/gpio-lib.sh
+
+if [ $# -lt 2 ]; then
+	exit 1
+fi
+
+case "$1" in
+	1) GPIO_UARTx_MODE0=56
+	;;
+	2) GPIO_UARTx_MODE0=57
+	;;
+	3) GPIO_UARTx_MODE0=58
+	;;
+	4) GPIO_UARTx_MODE0=59
+	;;
+	*) echo "Invalid UART port selection"
+	   exit 1
+	;;
+esac
+
+echo "Ampere UART MUX CTRL UART port $1 to mode $2"
+
+case "$2" in
+	1) gpio_configure_output "${GPIO_UARTx_MODE0}" 0
+	   exit 0
+	;;
+	2) gpio_configure_output "${GPIO_UARTx_MODE0}" 1
+	   exit 0
+	;;
+	*) echo "Invalid UART mode selection"
+	   exit 1
+	;;
+esac