Let's discard semihosting. I have aarch64-linux-gnu-* toolchain and qemu-system-aarch64 emulator. How can I build a minimal kernel which outputs Hello World! via serial port and run it on the emulator?
2014-09-04 21:15 GMT+03:00 Christopher Covington <c...@codeaurora.org>: > Hi Semion, > > On 09/04/2014 09:40 AM, Semion Prihodko wrote: > > Still don't know how to build/run a simple Hello World kernel on > > qemu-system-aarch64? > > > > Guys, this is a very basic thing, please provide concrete steps. Thanks. > > Here you go. Start at the wget. > > http://lists.gnu.org/archive/html/qemu-devel/2014-07/msg03487.html > > Angel semihosting isn't implemented upstream so a text hello world won't be > trivial, although given enough time it should be possible to implement > Angel > semihosting for A64 in QEMU, implement DCC in QEMU and Newlib/libgloss or > implement PL011 UART or VirtIO-MMIO console in Newlib/libgloss. > > Some of the bootloaders and firmwares out there (bootwrapper, ARM trusted > firmware, UEFI/Tianocore) may have examples of using the PL011 UART. > > Christopher > > -- > Employee of Qualcomm Innovation Center, Inc. > Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, > hosted by the Linux Foundation. >
