jointgasil.blogg.se - Bose freespace ds 40f

#Bose freespace ds 40f driver#
#Bose freespace ds 40f code#

My command line is: /tools/gnu/qemu-4.1.0/bin/qemu-system-aarch64 \ More Edit (to add info from "-device loader=my_file.elf")

What happens differently under-the-hood in QEMU between "-bios" and "-kernel"? Where is that documented, or where in the source can I follow it? How can I best debug this?įor debugging, all the good/relevant stuff seems to be in "virt.c".

Okay, now I'll change the "-bios my_file.elf" to "-device loader,file=my_file.elf". As you might also expect, the cores immediately die with an "Undefined Instruction" exception as soon as I issue "nexti" in my gdb.

#Bose freespace ds 40f code#

I don't see MY code anywhere, although the mysterious code is still getting loaded at both 0x0 and 0x4000000. Second (and VERY important) is that my memory does NOT contain what I expect! (gdb) compare-sections Okay, but I don't think that's relevant to my issue.

I don't need to use PSCI calls to start them. If I change my command line to REPLACE the "-kernel my_file.elf" switch with "-bios my_file.elf" switch (changing nothing else), and I repeat my run/gdb, then I see two things that are different.įirst, I see that all my cores are running. My first question then becomes: Can I enable some debug messages to understand what QEMU is loading where, and perhaps even WHY?.I do want to be careful that if I load something, we won't step on each other. It also places something (small) at 0x40000000. My GUESS is that QEMU has ASSUMED that I want some BIOS in the flash and has put one there.

I don't know what it is or where it came from. It is interesting to note that if I dump what is at location zero in memory, then there is stuff loaded down there. Perfect! Everything in my ELF is at 0x40004000, and I see it all in memory, just how I expect! My first core boots and runs as I expect. In fact, gdb has a built-in command for this. In another shell, if I launch gdb to see what QEMU has loaded into memory, it corresponds exactly to what I expect. machine virt,secure=on,virtualization=on \ I'd like to understand what the underlying differences are, because I see very different behavior and the documentation doesn't shed any light.Ĭonsider this first command line: qemu-system-aarch64 \ There are several ways to get QEMU to load compiled code into memory. Short can design allows installation in shallower ceilings with a minimum depth of 6.For background, I'm running bare-metal QEMU-4.1.0 on aarch64.Integrated multi-tap transformer with innovative thumb wheel adjustment for easy-to-change tap setting from underneath the loudspeaker grille.

#Bose freespace ds 40f driver#

Full-range loudspeaker with a single 4.5" (114 mm) driver in a ported enclosure to deliver a 125° conical coverage pattern and clear, intelligible music and speech reproduction for flush-ceiling or pendant mount applications.