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authorGerd Hoffmann <kraxel@redhat.com>2009-10-01 16:42:33 +0200
committerAnthony Liguori <aliguori@us.ibm.com>2009-10-06 14:36:08 -0500
commit45a50b1668822c23afc2a89f724654e176518bc4 (patch)
tree0dc2589b1b21401e50f54666c70e42df29c245eb /qemu-img.texi
parentdbbaaff6867af255d2cc84dbade4f9b58d823397 (diff)
downloadqemu-arm-45a50b1668822c23afc2a89f724654e176518bc4.tar.gz
Reorganize option rom (+linux kernel) loading.
This patch adds infrastructure to maintain memory regions which must be restored on reset. That includes roms (vga bios and option roms on pc), but is also used when loading linux kernels directly. Features: - loading files is supported. - passing blobs is supported. - target address range is supported (for optionrom area). - fixed target memory address is supported (linux kernel). New in v2: - writes to ROM are done only at initial boot. - also handle aout and uimage loaders. - drop unused fread_targphys() function. The final memory layout is created once all memory regions are registered. The option roms get addresses assigned and the registered regions are checked against overlaps. Finally all data is copyed to the guest memory. Advantages: (1) Filling memory on initial boot and on reset takes the same code path, making reset more robust. (2) The need to keep track of the option rom load address is gone. (3) Due to (2) option roms can be loaded outside pc_init(). This allows to move the pxe rom loading into the nic drivers for example. Additional bonus: There is a 'info roms' monitor command now. The patch also switches over pc.c and removes the option_rom_setup_reset() and load_option_rom() functions. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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