librem_mini/librem_mini_v2: Add automatic power-on setting

Mini v1/v2's EC can automatically power on the system when power is
applied, based on a value in EC BRAM.  Add a configuration setting to
optionally set this value.

Signed-off-by: Jonathon Hall <jonathon.hall@puri.sm>

boards/librem_mini/initrd/bin/board-init.sh

@@ -0,0 +1,22 @@
+#!/bin/ash
+set -o pipefail
+
+. /tmp/config
+
+# Set the Mini v2 EC's automatic power-on setting.
+# CONFIG_AUTOMATIC_POWERON is three-valued:
+# y - enable automatic power on in EC
+# n - disable automatic power on in EC
+# <blank> - don't configure EC, could be configured from OS
+
+# EC BRAM bank 1
+BRAMADDR=0x360
+BRAMDATA=0x361
+
+if [ "$CONFIG_AUTOMATIC_POWERON" = "y" ]; then
+	outb "$BRAMADDR" 0x29	# Select byte at offset 29h
+	outb "$BRAMDATA" 0x00	# 0 -> automatic power on
+elif [ "$CONFIG_AUTOMATIC_POWERON" = "n" ]; then
+	outb "$BRAMADDR" 0x29	# Select byte at offset 29h
+	outb "$BRAMDATA" 0x01	# 1 -> stay off
+fi

boards/librem_mini/librem_mini.config

@@ -11,6 +11,7 @@ CONFIG_CRYPTSETUP2=y
 CONFIG_FLASHROM=y
 CONFIG_FLASHTOOLS=y
 CONFIG_GPG2=y
+CONFIG_IOPORT=y
 CONFIG_KEXEC=y
 CONFIG_UTIL_LINUX=y
 CONFIG_LVM2=y
@@ -42,3 +43,4 @@ export CONFIG_AUTO_BOOT_TIMEOUT=5
 export CONFIG_ROOT_DEV="/dev/nvme0n1p2"
 export CONFIG_ROOT_DIRLIST="bin boot lib sbin usr"
 export CONFIG_ROOT_CHECK_AT_BOOT="n"
+export CONFIG_SUPPORT_AUTOMATIC_POWERON=y

boards/librem_mini_v2/initrd/bin/board-init.sh

@@ -0,0 +1,22 @@
+#!/bin/ash
+set -o pipefail
+
+. /tmp/config
+
+# Set the Mini v2 EC's automatic power-on setting.
+# CONFIG_AUTOMATIC_POWERON is three-valued:
+# y - enable automatic power on in EC
+# n - disable automatic power on in EC
+# <blank> - don't configure EC, could be configured from OS
+
+# EC BRAM bank 1
+BRAMADDR=0x360
+BRAMDATA=0x361
+
+if [ "$CONFIG_AUTOMATIC_POWERON" = "y" ]; then
+	outb "$BRAMADDR" 0x29	# Select byte at offset 29h
+	outb "$BRAMDATA" 0x00	# 0 -> automatic power on
+elif [ "$CONFIG_AUTOMATIC_POWERON" = "n" ]; then
+	outb "$BRAMADDR" 0x29	# Select byte at offset 29h
+	outb "$BRAMDATA" 0x01	# 1 -> stay off
+fi

boards/librem_mini_v2/librem_mini_v2.config

@@ -43,3 +43,4 @@ export CONFIG_AUTO_BOOT_TIMEOUT=5
 export CONFIG_ROOT_DEV="/dev/nvme0n1p2"
 export CONFIG_ROOT_DIRLIST="bin boot lib sbin usr"
 export CONFIG_ROOT_CHECK_AT_BOOT="n"
+export CONFIG_SUPPORT_AUTOMATIC_POWERON=y

initrd/bin/config-gui.sh

@@ -33,6 +33,7 @@ while true; do
     RESTRICTED_BOOT="$(load_config_value CONFIG_RESTRICTED_BOOT)"
     BASIC_NO_AUTOMATIC_DEFAULT="$(load_config_value CONFIG_BASIC_NO_AUTOMATIC_DEFAULT)"
     BASIC_USB_AUTOBOOT="$(load_config_value CONFIG_BASIC_USB_AUTOBOOT)"
+    AUTOMATIC_POWERON="$(load_config_value CONFIG_AUTOMATIC_POWERON)"
 
     dynamic_config_options=()
 
@@ -53,6 +54,12 @@ while true; do
         )
     fi
 
+    if [ "$CONFIG_SUPPORT_AUTOMATIC_POWERON" = "y" ]; then
+        dynamic_config_options+=( \
+            'N' " $(get_config_display_action "$AUTOMATIC_POWERON") Automatic Power-On" \
+        )
+    fi
+
     unset menu_choice
     whiptail $BG_COLOR_MAIN_MENU --title "Config Management Menu" \
     --menu "This menu lets you change settings for the current BIOS session.\n\nAll changes will revert after a reboot,\n\nunless you also save them to the running BIOS." 0 80 10 \
@@ -390,6 +397,31 @@ while true; do
         fi
       fi
     ;;
+    "N" )
+      if [ "$AUTOMATIC_POWERON" = "n" ]; then
+        if (whiptail --title 'Enable automatic power-on?' \
+             --yesno "The system will boot automatically when power is applied.
+                    \n\nDo you want to proceed?" 0 80) then
+
+          toggle_config /etc/config.user "CONFIG_AUTOMATIC_POWERON"
+          combine_configs
+
+          whiptail --title 'Config change successful' \
+            --msgbox "Automatic power-on enabled;\nsave the config change and reboot for it to go into effect." 0 80
+        fi
+      else
+        if (whiptail --title 'Disable automatic power-on?' \
+             --yesno "The system will stay off when power is applied.
+                    \n\nDo you want to proceed?" 0 80) then
+
+          toggle_config /etc/config.user "CONFIG_AUTOMATIC_POWERON"
+          combine_configs
+
+          whiptail --title 'Config change successful' \
+            --msgbox "Automatic power-on disabled;\nsave the config change and reboot for it to go into effect." 0 80
+        fi
+      fi
+    ;;
   esac
 
 done