1#!/bin/bash
2# Copyright 2020 Google LLC
3# Copyright 2020 Quanta Computer Inc.
4#
5# Licensed under the Apache License, Version 2.0 (the "License");
6# you may not use this file except in compliance with the License.
7# You may obtain a copy of the License at
8#
9#      http://www.apache.org/licenses/LICENSE-2.0
10#
11# Unless required by applicable law or agreed to in writing, software
12# distributed under the License is distributed on an "AS IS" BASIS,
13# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14# See the License for the specific language governing permissions and
15# limitations under the License.
16
17# shellcheck source=meta-quanta/meta-gbs/recipes-gbs/gbs-sysinit/files/gbs-gpio-common.sh
18source /usr/libexec/gbs-gpio-common.sh
19
20WD1RCR_ADDR=0xf080103c
21CORSTC_ADDR=0xf080105c
22BOARD_VER="" # Set by check_board_ver
23pe_eeprom_addr=( 50 54 )
24
25SERVICE_NAME="xyz.openbmc_project.Inventory.Manager"
26INTERFACE_NAME="xyz.openbmc_project.Inventory.Item"
27
28PE_PRESENT_OBJPATH=("/xyz/openbmc_project/inventory/system/chassis/entity/pe_slot0_prsnt"
29"/xyz/openbmc_project/inventory/system/chassis/entity/pe_slot1_prsnt")
30SATA0_PRESENT_OBJPATH="/xyz/openbmc_project/inventory/system/chassis/entity/sata0_prsnt"
31
32set_gpio_persistence() {
33  reg_val=$(devmem ${WD1RCR_ADDR} 32)
34  # Clear bit 16-23 to perserve all GPIO states across warm resets
35  reg_val=$(printf "0x%08x" $((reg_val & ~0xff0000)))
36  echo "Setting WD1RCR_ADDR to ${reg_val}"
37  devmem "${WD1RCR_ADDR}" 32 "${reg_val}"
38
39  reg_val=$(devmem ${CORSTC_ADDR} 32)
40  # Clear bit 16-23 of CORSTC
41  reg_val=$(printf "0x%08x" $((reg_val & ~0xff0000)))
42  echo "Setting CORSTC_ADDR to ${reg_val}"
43  devmem "${CORSTC_ADDR}" 32 "${reg_val}"
44}
45
46get_board_rev_id() {
47    echo "$(get_gpio_value 'BMC_BRD_REV_ID7')"\
48    "$(get_gpio_value 'BMC_BRD_REV_ID6')"\
49    "$(get_gpio_value 'BMC_BRD_REV_ID5')"\
50    "$(get_gpio_value 'BMC_BRD_REV_ID4')"\
51    "$(get_gpio_value 'BMC_BRD_REV_ID3')"\
52    "$(get_gpio_value 'BMC_BRD_REV_ID2')"\
53    "$(get_gpio_value 'BMC_BRD_REV_ID1')"\
54    "$(get_gpio_value 'BMC_BRD_REV_ID0')"\
55    | sed 's/ //g' > ~/board_rev_id.txt
56}
57
58get_board_sku_id() {
59    echo "$(get_gpio_value 'BMC_BRD_SKU_ID3')"\
60    "$(get_gpio_value 'BMC_BRD_SKU_ID2')"\
61    "$(get_gpio_value 'BMC_BRD_SKU_ID1')"\
62    "$(get_gpio_value 'BMC_BRD_SKU_ID0')"\
63    | sed 's/ //g' > ~/board_sku_id.txt
64}
65
66get_hsbp_board_rev_id() {
67    echo "$(get_gpio_value 'HSBP_BRD_REV_ID3')"\
68    "$(get_gpio_value 'HSBP_BRD_REV_ID2')"\
69    "$(get_gpio_value 'HSBP_BRD_REV_ID1')"\
70    "$(get_gpio_value 'HSBP_BRD_REV_ID0')"\
71    | sed 's/ //g' > ~/hsbp_board_rev_id.txt
72}
73
74get_fan_board_rev_id() {
75    echo "$(get_gpio_value 'FAN_BRD_REV_ID1')"\
76    "$(get_gpio_value 'FAN_BRD_REV_ID0')"\
77    | sed 's/ //g' > ~/fan_board_rev_id.txt
78}
79
80check_board_ver() {
81  # Sets BOARD_VER to either "PREPVT" or "PVT"
82  #
83  # BOARD_REV_ID[7:6] =
84  # 0x00 - EVT
85  # 0x01 - DVT
86  # 0x10 - PVT
87  # 0x11 - MP
88
89  rev7_val=$(get_gpio_value 'BMC_BRD_REV_ID7')
90  if (( rev7_val == 0 )); then
91    echo "EVT/DVT rev!"
92    BOARD_VER="PREPVT"
93  else
94    echo "PVT/MP rev!"
95    BOARD_VER="PVT"
96  fi
97}
98
99check_board_sku() {
100  sku1_val=$(get_gpio_value 'BMC_BRD_SKU_ID1')
101  if (( sku1_val == 1 )); then
102    echo "GBS SKU!"
103  else
104    echo "Other SKU!"
105  fi
106}
107
108set_uart_en_low() {
109  # GPIO76 UART_EN polarity inverted between DVT/PVT
110  # Pin direction was set high in the kernel.
111  set_gpio_direction 'FM_BMC_CPU_UART_EN' low
112}
113
114set_hdd_prsnt() {
115  # On PVT need to forward SATA0_PRSNT_N to HDD_PRSNT_N
116  # The signal is safe to set on DVT boards so just set universally.
117  mapper wait ${SATA0_PRESENT_OBJPATH}
118  sata_prsnt_n="$(busctl get-property $SERVICE_NAME ${SATA0_PRESENT_OBJPATH} \
119                 $INTERFACE_NAME Present)"
120
121  # sata_prsnt_n is active low => value "true" means low
122  if [[ ${sata_prsnt_n} == "b true" ]]; then
123    set_gpio_direction 'HDD_PRSNT_N' low
124  else
125    set_gpio_direction 'HDD_PRSNT_N' high
126  fi
127}
128
129KERNEL_FIU_ID="c0000000.spi"
130KERNEL_SYSFS_FIU="/sys/bus/platform/drivers/NPCM-FIU"
131
132# the node of FIU is spi for kernel 5.10, but
133# for less than or equal kernel 5.4, the node
134# is fiu
135if ls "$KERNEL_SYSFS_FIU"/*.fiu 1> /dev/null 2>&1; then
136  KERNEL_FIU_ID="c0000000.fiu"
137fi
138
139bind_host_mtd() {
140  set_gpio_direction 'SPI_SW_SELECT' high
141  if [[ -d ${KERNEL_SYSFS_FIU}/${KERNEL_FIU_ID} ]]; then
142    echo "${KERNEL_FIU_ID}" > "${KERNEL_SYSFS_FIU}"/unbind
143  fi
144  echo "${KERNEL_FIU_ID}" > "${KERNEL_SYSFS_FIU}"/bind
145}
146
147unbind_host_mtd() {
148  if [[ -d ${KERNEL_SYSFS_FIU}/${KERNEL_FIU_ID} ]]; then
149    echo "${KERNEL_FIU_ID}" > "${KERNEL_SYSFS_FIU}"/unbind
150  fi
151  set_gpio_direction 'SPI_SW_SELECT' low
152}
153trap unbind_host_mtd EXIT SIGHUP SIGINT SIGTERM
154
155# Taken from /run/initramfs/update
156# Given label name, return mtd node. e.g. `findmtd bmc` returns 'mtd0'
157findmtd() {
158  m=$(grep -xl "$1" /sys/class/mtd/*/name)
159  m=${m%/name}
160  m=${m##*/}
161  echo "$m"
162}
163
164verify_host_bios() {
165  echo "BIOS verification start!"
166
167  # placeholder for verifying host BIOS. For now time BIOS read
168  # with dd
169  bind_host_mtd || { echo "Failed to bind FIU driver for host MTD"; return 1; }
170
171  pnor_mtd=$(findmtd pnor)
172  [[ -z "${pnor_mtd}" ]] && { echo "Failed to find host MTD  partition!"; return 1; }
173
174  # Test timing by computing SHA256SUM.
175  sha256sum "/dev/${pnor_mtd}ro"
176
177  echo "BIOS verification complete!"
178  unbind_host_mtd
179}
180
181parse_pe_fru() {
182  pe_fruid=3
183  for i in {1..2};
184  do
185     mapper wait "${PE_PRESENT_OBJPATH[$((i-1))]}"
186     pe_prsnt_n="$(busctl get-property $SERVICE_NAME "${PE_PRESENT_OBJPATH[$((i-1))]}" \
187                  $INTERFACE_NAME Present)"
188
189     if [[ ${pe_prsnt_n} == "b false" ]]; then
190         pe_fruid=$((pe_fruid+1))
191         continue
192     fi
193
194     # Output is the i2c bus number for the PCIE cards on PE0/PE1
195     # i2c-0 -> i2c mux (addr: 0x71) -> PE0/PE1
196     # PE0: channel 0
197     # PE1: channel 1
198     # shellcheck disable=SC2010
199     pe_fru_bus="$(ls -al /sys/bus/i2c/drivers/pca954x/0-0071/ | grep channel \
200                   | awk -F "/" '{print $(NF)}' | awk -F "-" '{print $2}' | sed -n "${i}p")"
201
202     # If the PE FRU EEPROM syspath does not exist, create it ("24c02" is the
203     # EEPROM part number) and perform a phosphor-read-eeprom
204     for ((j=0; j < ${#pe_eeprom_addr[@]}; j++));
205     do
206        if i2cget -f -y "$pe_fru_bus" "0x${pe_eeprom_addr[$j]}" 0x01 > /dev/null 2>&1 ; then
207          if [ ! -f "/sys/bus/i2c/devices/$pe_fru_bus-00${pe_eeprom_addr[$j]}/eeprom" ]; then
208            echo 24c02 "0x${pe_eeprom_addr[$j]}" > "/sys/bus/i2c/devices/i2c-$pe_fru_bus/new_device"
209          fi
210          pe_fru_bus="/sys/bus/i2c/devices/$pe_fru_bus-00${pe_eeprom_addr[$j]}/eeprom"
211          phosphor-read-eeprom --eeprom "$pe_fru_bus" --fruid $pe_fruid
212          break
213        fi
214     done
215     pe_fruid=$((pe_fruid+1))
216  done
217}
218
219check_power_status() {
220    res0="$(busctl get-property -j xyz.openbmc_project.State.Chassis \
221        /xyz/openbmc_project/state/chassis0 xyz.openbmc_project.State.Chassis \
222        CurrentPowerState | jq -r '.["data"]')"
223    echo "$res0"
224}
225
226clk_buf_bus_switch="11-0076"
227clk_buf_driver="/sys/bus/i2c/drivers/pca954x/"
228
229bind_clk_buf_switch() {
230  echo "Re-bind i2c bus 11 clk_buf_switch"
231  echo "${clk_buf_bus_switch}" > "${clk_buf_driver}"/bind
232}
233
234main() {
235  get_board_rev_id
236  get_board_sku_id
237  get_hsbp_board_rev_id
238  get_fan_board_rev_id
239
240  check_board_ver
241  if [[ "${BOARD_VER}" == "PREPVT" ]]; then
242    set_uart_en_low
243  fi
244
245  check_board_sku
246
247  if [[ $(check_power_status) != \
248       'xyz.openbmc_project.State.Chassis.PowerState.On' ]]; then
249    verify_host_bios
250
251    echo "Release host from reset!" >&2
252    set_gpio_direction 'RST_BMC_RSMRST_N' high
253    set_gpio_direction 'RST_KBRST_BMC_CPLD_N' high
254    # TODO: remove the hack once kernel driver is ready
255    # Set the GPIO states to preserve across reboots
256    set_gpio_persistence
257
258    echo "Starting host power!" >&2
259    busctl set-property xyz.openbmc_project.State.Host \
260        /xyz/openbmc_project/state/host0 \
261        xyz.openbmc_project.State.Host \
262        RequestedHostTransition s \
263        xyz.openbmc_project.State.Host.Transition.On
264
265    sleep 1
266    bind_clk_buf_switch
267  else
268    echo "Host is already running, doing nothing!" >&2
269  fi
270
271  set_hdd_prsnt
272  parse_pe_fru
273}
274
275# Exit without running main() if sourced
276if ! (return 0 2>/dev/null) ; then
277    main "$@"
278fi
279