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In qemu there is an amazing feature – memory watchpoint. It can watch all the memory access including memory read, write or both of them. When guest os/application touches the memory region watched by qemu, a registered function will be called and you can do everything as you want in this function. The gdb stub [...]
Qemu uses softmmu to accelerate the process of finding the mapping between guest physical address and host virtual address and the mapping between guest I/O region and qemu I/O emulation functions. In this article, I assume the guest page table size is 4K.
1. the two level guest physical page descriptor table
Qemu uses a two level [...]
In qemu, there are two different meanings of target. The first meaning of ‘target’ means the emulated target machine architecture. For example, when emulating mips machine on x86, the target is mips and host is x86. However, in tcg(tiny code generator), target has a different meaning. It means the generated binary architecture. In the example [...]
Hi guys, it is about one month since posting last blog entry. These days I am really very busy preparing the GRE and Tofel test. Moreover I have to work to support my life. So I have to spend less time on qemu-loongson.
Anyway, there are progress these days.
Rewrite the GPIO I2C emulation for gdium. [...]
New version of qemu does not support MIPS host anymore.
For the sake of portability, the new version of qemu uses TCG, a tiny code generator, instead of dyngen to generate host code. That means one backend is needed for each host architecture. There are i386,x86_64,ppc,ppc64 and hppa backend in TCG, but MIPS is not on [...]
Hi everyone, a good news for you. Linux in running successfully on qemu-omap3. Following is the screenshot.
However, MMC/USB/audio/LCD display/keyboard emulation are not ok . I will work on it.
In the following I will give you some informations of how to run qemu-omap3.
1. checkout qemu-omap3 from svn. Tag v0.01 is working.
svn checkout http://qemu-omap3.googlecode.com/svn/tags/v0.01 qemu-omap3
Or you can [...]
Good news. LCD is working in qemu-omap3
Beagle board has an DVI transmitter TFP 410 and it outputs ditigal signal to LCD panel which has DVI connector. However, we do not care TFP 410 because it is just a pipe for LCD output data. What we care about is the LCD output data itself.
According to the [...]
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