Support mipsel

.github/workflows/build.yml

@@ -17,6 +17,7 @@ jobs:
 
       - name: Build
         run: |
-          sh build.sh divinus-musl
-          sh build.sh divinus-muslhf
-          sh build.sh divinus-glibc
+          sh build.sh arm-musl
+          sh build.sh arm-muslhf
+          sh build.sh arm-glibc
+          sh build.sh mips-musl

build.sh

@@ -3,12 +3,12 @@ DL="https://github.com/openipc/firmware/releases/download/latest"
 
 toolchain() {
 	if [ ! -e toolchain/$1 ]; then
-		wget -c -q --show-progress $DL/$1.tgz -P $PWD
+		wget -c -q $DL/$1.tgz -P $PWD
 		mkdir -p toolchain/$1
 		tar -xf $1.tgz -C toolchain/$1 --strip-components=1 || exit 1
 		rm -f $1.tgz
 	fi
-	GCC=$PWD/toolchain/$1/bin/arm-linux-gcc
+	GCC=$PWD/toolchain/$1/bin/$2-linux-gcc
 }
 
 if [ "$2" = "debug" ]; then
@@ -17,16 +17,19 @@ else
 	OPT="-Os -s"
 fi
 
-if [ "$1" = "divinus-musl" ]; then
-	toolchain cortex_a7_thumb2-gcc13-musl-4_9
+if [ "$1" = "arm-musl" ]; then
+	toolchain cortex_a7_thumb2-gcc13-musl-4_9 arm
 	make -C src -B CC=$GCC OPT="$OPT"
-elif [ "$1" = "divinus-muslhf" ]; then
-	toolchain cortex_a7_thumb2_hf-gcc13-musl-4_9
+elif [ "$1" = "arm-muslhf" ]; then
+	toolchain cortex_a7_thumb2_hf-gcc13-musl-4_9 arm
 	make -C src -B CC=$GCC OPT="$OPT"
-elif [ "$1" = "divinus-glibc" ]; then
-	toolchain cortex_a7_thumb2_hf-gcc13-glibc-4_9
+elif [ "$1" = "arm-glibc" ]; then
+	toolchain cortex_a7_thumb2_hf-gcc13-glibc-4_9 arm
 	make -C src -B CC=$GCC OPT="$OPT -lm"
+elif [ "$1" = "mips-musl" ]; then
+	toolchain mips_xburst-gcc13-musl-3_10 mipsel
+	make -C src -B CC=$GCC OPT="$OPT"
 else
-	echo "Usage: $0 [divinus-musl|divinus-muslhf|divinus-glibc]"
+	echo "Usage: $0 [arm-musl|arm-muslhf|arm-glibc|mips-musl]"
 	exit 1
 fi

src/Makefile

@@ -1,4 +1,4 @@
 SRC := $(shell find ./ -name '*.c')
 
 divinus:
-	$(CC) $(SRC) -I src -rdynamic -Wl,--wrap=mmap $(OPT) -o ../$@
+	$(CC) $(SRC) -I src -rdynamic $(OPT) -o ../$@

src/compat.c

@@ -16,9 +16,10 @@ float __expf_finite(float x) { return expf(x); }
 int __fgetc_unlocked(FILE *stream) { return fgetc(stream); }
 double __log_finite(double x) { return log(x); }
 
-void* mmap(void *start, size_t len, int prot, int flags, int fd, uint32_t off) {
+void *mmap(void *start, size_t len, int prot, int flags, int fd, uint32_t off) {
+    return (void*)syscall(SYS_mmap2, start, len, prot, flags, fd, off >> 12);
+}
+
+void *mmap64(void *start, size_t len, int prot, int flags, int fd, off_t off) {
     return (void*)syscall(SYS_mmap2, start, len, prot, flags, fd, off >> 12);
 }
-void* __wrap_mmap(void *start, size_t len, int prot, int flags, int fd, uint32_t off) {
-    return mmap(start, len, prot, flags, fd, off);
-}

src/gpio.c

@@ -12,6 +12,7 @@ void gpio_deinit(void) {
     fd_gpio = 0;
 }
 
+#ifdef __arm__
 int gpio_init(void) {
     while (*path++) {
         if (access(*path, 0)) continue;
@@ -78,4 +79,17 @@ int gpio_write(char pin, bool value) {
 
     close(req.fd);
     return EXIT_SUCCESS;
-}
+}
+#else
+int gpio_init(void) {
+    return EXIT_SUCCESS;
+}
+
+int gpio_read(char pin, bool *value) {
+    return EXIT_SUCCESS;
+}
+
+int gpio_write(char pin, bool value) {
+    return EXIT_SUCCESS;
+}
+#endif

src/gpio.h

@@ -1,15 +1,18 @@
 #include <fcntl.h>
-#include <linux/gpio.h>
 #include <stdbool.h>
 #include <stddef.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <sys/ioctl.h>
 #include <unistd.h>
 
+#ifdef __arm__
+#include <linux/gpio.h>
+#endif
+
 #define GPIO_ERROR(x, ...) fprintf(stderr, "%s \033[31m%s\033[0m\n", "[gpio] (x)", ##__VA_ARGS__)
 
 void gpio_deinit(void);
 int gpio_init(void);
 int gpio_read(char pin, bool *value);
-int gpio_write(char pin, bool value);
+int gpio_write(char pin, bool value);

src/hal/support.c

@@ -1,7 +1,5 @@
 #include "support.h"
 
-extern void* __real_mmap();
-
 void *isp_thread = NULL;
 void *venc_thread = NULL;
 
@@ -34,7 +32,7 @@ bool hal_registry(unsigned int addr, unsigned int *data, hal_register_op op) {
 
     volatile char *mapped_area;
     if (offset != loaded_offset) {
-        mapped_area = __real_mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, mem_fd, offset);
+        mapped_area = mmap64(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, mem_fd, offset);
         if (mapped_area == MAP_FAILED) {
             fprintf(stderr, "hal_registry mmap error: %s (%d)\n",
                     strerror(errno), errno);
@@ -86,9 +84,16 @@ void hal_identify(void) {
                 venc_thread = i6f_video_thread;
                 return;
         }
-    else if (!access("/proc/jz", 0)) {
-        plat = HAL_PLATFORM_TX;
-    }
+    else if (!access("/proc/jz", 0) && 
+        hal_registry(0x1300002C, &val, OP_READ))
+        switch ((val >> 12) & 0xFF) {
+            case 0x21:
+                plat = HAL_PLATFORM_T21;
+                return;
+            case 0x31:
+                plat = HAL_PLATFORM_T31;
+                return;
+        }
 
     if (file = fopen("/proc/iomem", "r"))
         while (fgets(line, 200, file))
@@ -119,4 +124,4 @@ void hal_identify(void) {
     chnState = (hal_chnstate*)v4_state;
     isp_thread = v4_image_thread;
     venc_thread = v4_video_thread;
-}
+}

src/hal/support.h

@@ -33,4 +33,6 @@ extern void *i6f_encoder_thread(void);
 extern hal_chnstate i6f_state[I6F_VENC_CHN_NUM];
 
 bool hal_registry(unsigned int addr, unsigned int *data, hal_register_op op);
-void hal_identify(void);
+void hal_identify(void);
+
+void *mmap64(void *start, size_t len, int prot, int flags, int fd, off_t off);

src/hal/types.h

@@ -23,7 +23,8 @@ typedef enum {
     HAL_PLATFORM_I6C,
     HAL_PLATFORM_I6E,
     HAL_PLATFORM_I6F,
-    HAL_PLATFORM_TX,
+    HAL_PLATFORM_T21,
+    HAL_PLATFORM_T31,
     HAL_PLATFORM_V4
 } hal_platform;
 
@@ -100,4 +101,4 @@ typedef struct {
 	hal_vidpack *pack;
 	unsigned int count;
 	unsigned int seq;
-} hal_vidstream;
+} hal_vidstream;

src/main.c

@@ -29,6 +29,10 @@ int main(int argc, char *argv[]) {
             fprintf(stderr, "Divinus for infinity6e\n"); break;
         case HAL_PLATFORM_I6F:
             fprintf(stderr, "Divinus for infinity6f\n"); break;
+        case HAL_PLATFORM_T21:
+            fprintf(stderr, "Divinus for ingenic t21\n"); break;
+        case HAL_PLATFORM_T31:
+            fprintf(stderr, "Divinus for ingenic t31\n"); break;
         case HAL_PLATFORM_V4:
             fprintf(stderr, "Divinus for hisi-gen4\n"); break;
         default: