Fix: on board

Makefile

@@ -38,7 +38,7 @@ OBJS := $(SRCS:%=%.o)
 
 .PHONY: all build clean clean_target run kernel debug gdb
 
-all:
+all: $(CPIO)
 	$(MAKE) build TARGET_DIR=./kernel TARGET=kernel8
 	$(MAKE) build TARGET_DIR=./bootloader TARGET=bootloader
 

bootloader/main.c

@@ -14,7 +14,7 @@ void main(void *dtb)
   uart_puts("waiting for kernel to be sent ..." ENDL);
 
   union {
-    int size;
+    int32_t size;
     uint8_t buf[4];
   } kernel_header;
   kernel_header.size = 0;

kernel/linker.ld

@@ -1,10 +1,10 @@
 ENTRY(_start)
 MEMORY
 {
-  TEXT (rx) : ORIGIN = 0x80000, LENGTH = 128K
-  RO (r) : ORIGIN = 0xa0000, LENGTH = 128K
-  DATA (rw) : ORIGIN = 0x100000, LENGTH = 512K
-  RAM (rw) : ORIGIN = 0x180000, LENGTH = 64M
+  TEXT (rx) : ORIGIN = 0x80000, LENGTH = 64K
+  RO (r) : ORIGIN = 0x90000, LENGTH = 16K
+  DATA (rw) : ORIGIN = 0x94000, LENGTH = 64K
+  RAM (rw) : ORIGIN = 0xa4000, LENGTH = 64M
 }
 
 SECTIONS

misc/config.txt

@@ -1,3 +1,4 @@
-initramfs initramfs.cpio 0x20000000
+initramfs initramfs.cpio
 kernel=bootloader.img
+enable_uart=1
 arm_64bit=1

upload.py

@@ -3,6 +3,8 @@ from pwn import *
 from struct import pack
 from tqdm import tqdm
 
+print(sys.argv)
+
 if len(sys.argv) < 2:
     print("no args for serial device")
     exit()
@@ -26,5 +28,5 @@ while True:
 
     r.interactive()
 
-    r.send(b"reboot\n")
-    sleep(1)
+    r.send(b"\nreboot\n")
+    sleep(10)