.gitignore update

.gitignore

@@ -1,4 +1,5 @@
 dump/
 *.bin
 *.a
+reven/
 !dump/exynos-usbdl/

source/gupje_device/Makefile

@@ -0,0 +1,17 @@
+ifeq ($(ANDROID_NDK_ROOT),)
+$(error Error : Set the env variable 'ANDROID_NDK_ROOT' with the path of the Android NDK (version 20))
+endif
+
+CC := $(ANDROID_NDK_ROOT)/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android27-clang
+AR := $(ANDROID_NDK_ROOT)/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android-ar
+OBJCOPY := $(ANDROID_NDK_ROOT)/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android-objcopy
+LD := $(ANDROID_NDK_ROOT)/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android-ld.bfd
+
+#==================Target Samsung S7 (8890)==================
+CFLAGS_SAMSUNGS7 = -Os -Idevices/samsung_s7/
+samsung_s7:
+	[ -d bin/samsung_s7 ] || mkdir -p bin/samsung_s7/
+	$(CC) arm64_stub.S -c -o bin/samsung_s7/entry.o $(CFLAGS_SAMSUNGS7)
+	$(CC) debugger.c -c -o bin/samsung_s7/debugger.o $(CFLAGS_SAMSUNGS7)
+	$(LD) -T devices/samsung_s7/linkscript.ld bin/samsung_s7/entry.o bin/samsung_s7/debugger.o -o bin/samsung_s7/debugger.elf --just-symbols=devices/samsung_s7/symbols.txt
+	$(OBJCOPY) -O binary bin/samsung_s7/debugger.elf bin/samsung_s7/debugger.bin

source/gupje_device/Readme.md

@@ -0,0 +1,7 @@
+# Gupje
+Current memory map:
+
+![memory map](memory_map.drawio.svg)
+
+## Usage:
+Copy this folder to <gupje>/devices/samsung_s7 and run ``make``

source/gupje_device/device.h

@@ -0,0 +1,86 @@
+#include <stdint.h>
+#include <stddef.h>
+
+//  Create external function at 0x00006f88
+extern void maybe_usb_setup_read(char endpoint,void *fun,uint32_t target_buffer);
+extern void dwc3_ep0_start_trans(char endpoint,uint32_t target_buf, uint32_t len);
+extern int usb_event_handler(void);
+extern uint32_t get_endpoint_recv_buffer(char endpoint);
+extern void exynos_sleep(int endpoint,uint32_t timeout);
+extern void usb_send(uint32_t address,uint32_t size);
+
+int mystrlen(char *data) {
+    int i=0;
+    while(1) {
+        if(data[i++] == '\0'){
+            break;
+        }
+    }
+    return i-1;
+}
+
+
+#define recv_buffer 0x206fe00 //0x02021800 + 0x3000
+#define data_received 0x206fd00
+
+void recv_data_cb(uint32_t endpoint, uint32_t len){
+    char *dest_buf = (char *)recv_buffer;
+    volatile void *dref = (void *)data_received;
+    
+    void *rbuf = get_endpoint_recv_buffer(endpoint);
+    for(int i= 0; i < len; i++){
+        dest_buf[i] = *(char *)(void *)((int)rbuf + i);
+    }
+    *(uint8_t *)dref = 1; // Mark as ready
+}
+
+void recv_data(void *address, uint32_t size){
+    // 
+    volatile void *dref = (void *)data_received;
+    *(uint8_t *)dref = 0;
+
+    maybe_usb_setup_read(2, recv_data_cb, size);
+    uint32_t rbuf = get_endpoint_recv_buffer(2);
+    dwc3_ep0_start_trans(2, rbuf, size);
+    while(1){
+        usb_event_handler();
+        if(*(uint8_t *)dref == 1){
+            break;
+        }
+        // exynos_sleep(2, 1000);
+    }
+    // Copy to destination location
+    char *dest_buf = (uint64_t)address;
+    for(int i= 0; i < size; i++){
+        dest_buf[i] = *(char *)(void *)((int)recv_buffer + i);
+    }
+}
+
+void send_data_cb(uint32_t endpoint, uint32_t len){
+    // Tell event handler that the data was received
+    volatile void *dref = (void *)data_received;
+    *(uint8_t *)dref = 1; // Mark as ready
+}
+
+void send(void *address, uint32_t size, uint32_t *error){
+    volatile void *dref = (void *)data_received;
+    *(uint8_t *)dref = 0;
+    maybe_usb_setup_read(0x1, send_data_cb, size);
+    // uint32_t rbuf = get_endpoint_recv_buffer(1);
+    dwc3_ep0_start_trans(1, (uint64_t)address, size);
+    while(1){
+        usb_event_handler();
+        if(*(uint8_t *)dref == 1){
+            break;
+        }
+        // exynos_sleep(1, 1000);
+    }
+}
+
+void usb_log(char * msg, uint32_t * error){
+	send(msg, mystrlen(msg), error);    
+}
+
+void concrete_main(uint64_t debugger){
+
+}

source/gupje_device/linkscript.ld

@@ -0,0 +1,14 @@
+MEMORY {
+    ROM (rwx): ORIGIN = 0x2069000, LENGTH = 0x1000
+}
+
+SECTIONS
+{
+     . = 0x2069000;
+     .text . : {
+          *(.text*)
+          *(.data*)
+          *(.rodata*)
+     } >ROM
+
+}

source/gupje_device/symbols.txt

@@ -0,0 +1,9 @@
+debugger_storage = 0x206d000;
+debugger_stack = 0x206b000;
+debugger_entry = 0x2069000;
+
+maybe_usb_setup_read = 0x00006f88;
+dwc3_ep0_start_trans = 0x0000791c;
+usb_event_handler = 0x00007bac;
+get_endpoint_recv_buffer = 0x00007a7c;
+exynos_sleep = 0x000027c8;