ROCK Pi 4 (RK3399) support (#1499)

* ROCK Pi 4 (RK3399) support

* Code style

Author: docbender

configure

@@ -17,7 +17,7 @@ SPI driver options:
                                 Device path. [/dev/spidev0.0]
 
 Building options:
-    --soc=[BCM2711|BCM2835|BCM2836|BCM2837|AM33XX|A10|A13|A20|H3]
+    --soc=[BCM2711|BCM2835|BCM2836|BCM2837|AM33XX|A10|A13|A20|H3|RK3399]
                                 SoC type to be used. [configure autodetected]
     --cpu-flags=<CPUFLAGS>      CPU defining/optimizing flags to be used. [configure autodetected]
     --extra-cflags=<CFLAGS>     Extra C flags passed to C compilation. []
@@ -248,7 +248,10 @@ function detect_machine {
         soc="AM33XX"
         ;;
     *)
-        soc="unknown"
+        if [[ $machine == *"ROCK Pi 4"* ]]; then
+            soc="RK3399"
+            tp="RockPi4"
+        fi
     esac
     echo "${soc} ${tp} ${cpu}"
 }
@@ -283,12 +286,21 @@ function gcc_cpu_flags {
     H3)
         flags="-march=armv7-a -mtune=cortex-a7 -mfpu=neon-vfpv4 -mfloat-abi=hard"
         ;;
+    RK3399)
+        flags="-march=armv8-a+crc+crypto -mtune=cortex-a72.cortex-a53 -mfix-cortex-a53-835769 -mfix-cortex-a53-843419"
+        ;;
     *)
         flags=""
     esac
     echo ${flags}
 }
 
+ROCKPI4_PIN_MAP=(  
+      1   2  71   4  72   6  75 148   9 147
+    146 131 150  14 149 154  17 156  40  20
+     39 157  41  42  25  26  64  65  74  30
+     73 112  76  24 133 132 158 134  39 135 )
+
 # Default values
 debug=enable
 gateway_type=ethernet
@@ -297,7 +309,7 @@ signing=none
 signing_request_signatures=false
 encryption=false
 
-params="SOC CFLAGS CXXFLAGS CPPFLAGS LDFLAGS PREFIX CC CXX ARDUINO_LIB_DIR BUILDDIR BINDIR GATEWAY_DIR INIT_SYSTEM SPI_DRIVER"
+params="SOC CFLAGS CXXFLAGS CPPFLAGS LDFLAGS PREFIX CC CXX ARDUINO_LIB_DIR BUILDDIR BINDIR GATEWAY_DIR INIT_SYSTEM SPI_DRIVER TYPE"
 
 for opt do
     if [ "$opt" = "-h" ] || [ "$opt" = "--help" ]; then
@@ -575,6 +587,17 @@ else
     fi
 fi
 
+if [[ $TYPE == "RockPi4" ]]; then
+    FLTMP=$CPPFLAGS
+    pattern="(.+_PIN=)([0-9]+)(.*)"
+    while [[ $FLTMP =~ $pattern ]]; do
+        FLTMP=${BASH_REMATCH[3]}
+	CPPFLAGS=${BASH_REMATCH[1]}${ROCKPI4_PIN_MAP[${BASH_REMATCH[2]}-1]}
+    done
+    CPPFLAGS=$CPPFLAGS$FLTMP
+    CPPFLAGS="-DLINUX_ARCH_ROCKPI4 $CPPFLAGS"
+fi
+
 if [ -z "${SPI_DRIVER}" ]; then
     printf "${SECTION} Detecting SPI driver.\n"
     if [[ $SOC == "BCM2835" || $SOC == "BCM2836" || $SOC == "BCM2837" || $SOC == "BCM2711" ]]; then

hal/architecture/Linux/drivers/core/interrupt.cpp

@@ -42,15 +42,27 @@ struct ThreadArgs {
 volatile bool interruptsEnabled = true;
 static pthread_mutex_t intMutex = PTHREAD_MUTEX_INITIALIZER;
 
-static pthread_t *threadIds[64] = {NULL};
+static pthread_t *threadIds[256] = {NULL};
 
 // sysFds:
 //	Map a file descriptor from the /sys/class/gpio/gpioX/value
-static int sysFds[64] = {
+static int sysFds[256] = {
 	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
 	    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
 	    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
 	    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+	    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+	    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+	    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+	    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+	    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+	    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+	    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+	    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+	    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+	    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+	    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+	    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
     };
 
 /*
@@ -130,7 +142,7 @@ void attachInterrupt(uint8_t gpioPin, void (*func)(), uint8_t mode)
 	FILE *fd;
 	char fName[40];
 	char c;
-	int count, i;
+	int count;
 
 	if (threadIds[gpioPin] == NULL) {
 		threadIds[gpioPin] = new pthread_t;
@@ -190,15 +202,15 @@ void attachInterrupt(uint8_t gpioPin, void (*func)(), uint8_t mode)
 
 	if (sysFds[gpioPin] == -1) {
 		snprintf(fName, sizeof(fName), "/sys/class/gpio/gpio%d/value", gpioPin);
-		if ((sysFds[gpioPin] = open(fName, O_RDWR)) < 0) {
+		if ((sysFds[gpioPin] = open(fName, O_RDONLY)) < 0) {
 			logError("Error reading pin %d: %s\n", gpioPin, strerror(errno));
 			exit(1);
 		}
 	}
 
 	// Clear any initial pending interrupt
 	ioctl(sysFds[gpioPin], FIONREAD, &count);
-	for (i = 0; i < count; ++i) {
+	for (int i = 0; i < count; ++i) {
 		if (read(sysFds[gpioPin], &c, 1) == -1) {
 			logError("attachInterrupt: failed to read pin status: %s\n", strerror(errno));
 		}