meta-fii: meta-kudo: Use GPIO line names instead of number
Replaces hard-coded GPIO throughout the Kudo layer with a reference
to its line name from DTS.
The process to dynamically obtain the GPIO number for Get is added
to kudo-lib.sh,
1. Use `gpiofind <Line Name>` to obtain gpiochip# and pin#
2. If the gpiochip# exceeds the number of GPIO banks of Nuvoton,
then it is an I/O Expander.
a. Use `gpiodetect` and extract the I2C bus-addr
b. Obtain GPIO base value from sysfs using bus-addr
c. The GPIO number is then the (base + pin#)
3. If the gpiochip# is within Nuvoton GPIO banks, then calculate
the GPIO number as ((gpiochip#)*32 + pin#)
Then the GPIO number can be used in the export to obtain the value.
Tested with Nuvoton:
- Can read/set Nuvoton GPIO with defined line names
- Can read/set GPIO from I/O Expanders with defined line names
Signed-off-by: Charles Boyer <Charles.Boyer@fii-usa.com>
Change-Id: I651c0707a8bbc170d3c5a5fc261e5f9c62453e9f
diff --git a/meta-fii/meta-kudo/recipes-kudo/kudo-sys-utility/kudo-boot/init_once.sh b/meta-fii/meta-kudo/recipes-kudo/kudo-sys-utility/kudo-boot/init_once.sh
index cd80674..fa5395d 100644
--- a/meta-fii/meta-kudo/recipes-kudo/kudo-sys-utility/kudo-boot/init_once.sh
+++ b/meta-fii/meta-kudo/recipes-kudo/kudo-sys-utility/kudo-boot/init_once.sh
@@ -6,17 +6,17 @@
function set_mux_default(){
# set all mux route to CPU before power on host
- # BMC_CPU_RTC_I2C_SEL #120
- set_gpio_ctrl 120 out 1
- # BMC_CPU_DDR_I2C_SEL #84
- set_gpio_ctrl 84 out 1
- # BMC_CPU_EEPROM_I2C_SEL #85
- set_gpio_ctrl 85 out 1
- # BMC_CPU_PMBUS_SEL #86
- set_gpio_ctrl 86 out 1
+ # BMC_CPU_RTC_I2C_SEL
+ set_gpio_ctrl CPU_RTC_SEL 1
+ # BMC_CPU_DDR_I2C_SEL
+ set_gpio_ctrl CPU_DDR_SEL 1
+ # BMC_CPU_EEPROM_I2C_SEL
+ set_gpio_ctrl CPU_EEPROM_SEL 1
+ # BMC_CPU_PMBUS_SEL
+ set_gpio_ctrl CPU_VRD_SEL 1
# LED control
- # LED_BMC_LIVE #7
- set_gpio_ctrl 7 out 1
+ # LED_BMC_LIVE
+ set_gpio_ctrl LED_BMC_ALIVE 1
# SPI control
# Send command to CPLD to switch the bios spi interface to host
@@ -32,27 +32,27 @@
# Set BMC_I2C_BACKUP_SEL to secondary.
if [[ $boardver -lt 64 ]]; then
echo "EVT system. Choosing secondary SCP EEPROM."
- set_gpio_ctrl 168 out 0
+ set_gpio_ctrl BACKUP_SCP_SEL 0
set_mux_default
# Power control
- # S0_BMC_OK, GPIO 69
- set_gpio_ctrl 69 out 1
+ # S0_BMC_OK
+ set_gpio_ctrl S0_BMC_OK 1
else
echo "DVT or PVT system"
# sleep so that FRU and all ipmitool Devices are ready before HOST OS
- # gpio 143 for HPM_STBY_RST_N do to DC-SCM spec
- set_gpio_ctrl 143 out 1 # on DVT this became HPM_STBY_RST_N (EVT1 came from CPLD)
+ # HPM_STBY_RST_N to DC-SCM spec
+ set_gpio_ctrl HPM_STBY_RST_N 1 # on DVT this became HPM_STBY_RST_N (EVT1 came from CPLD)
sleep 5 # for the MUX to get ready
set_mux_default
# Power control
- # S0_BMC_OK, GPIO 69
- set_gpio_ctrl 69 out 1
+ # S0_BMC_OK
+ set_gpio_ctrl S0_BMC_OK 1
fi
# Disable CPU 1 CLK when cpu not detected
# echo init_once cpu $CPU1_STATUS > /dev/ttyS0
# echo init_once board $boardver > /dev/ttyS0
-CPU1_STATUS_N=$(get_gpio_ctrl 136)
+CPU1_STATUS_N=$(get_gpio_ctrl S1_STATUS_N)
if [[ $CPU1_STATUS_N == 1 ]]; then
#Execute this only on DVT systems
if [[ $boardver -lt 64 ]]; then