README.txt
==========
This board configuration will use QEMU to emulate generic ARM v7-A series
hardware platform and provides support for these devices:
- GICv2 interrupt controllers
- ARM Generic Timer
- PL011 UART controller
Contents
========
- Getting Started
- Status
- Platform Features
- Debugging with QEMU
- FPU Support and Performance
- SMP Support
- References
Getting Started
===============
1. Configuring and running
1.1 Single Core
Configuring NuttX and compile:
$ ./tools/configure.sh -l qemu-armv7a:nsh
$ make
Running with qemu
$ qemu-system-arm -cpu cortex-a7 -nographic \
-machine virt,virtualization=off,gic-version=2 \
-net none -chardev stdio,id=con,mux=on -serial chardev:con \
-mon chardev=con,mode=readline -kernel ./nuttx
Debugging with QEMU
===================
The nuttx ELF image can be debugged with QEMU.
1. To debug the nuttx (ELF) with symbols, make sure the following change have
applied to defconfig.
+CONFIG_DEBUG_SYMBOLS=y
2. Run QEMU(at shell terminal 1)
Single Core
$ qemu-system-arm -cpu cortex-a7 -nographic \
-machine virt,virtualization=off,gic-version=2 \
-net none -chardev stdio,id=con,mux=on -serial chardev:con \
-mon chardev=con,mode=readline -kernel ./nuttx -S -s
3. Run gdb with TUI, connect to QEMU, load nuttx and continue (at shell terminal 2)
$ arm-none-eabi-gdb -tui --eval-command='target remote localhost:1234' nuttx
(gdb) c
Continuing.
^C
Program received signal SIGINT, Interrupt.
nx_start () at armv7-a/arm_head.S:209
(gdb)
a2b9cbffc2