[Qemu-devel] [PATCH v11 0/8] Add a generic loader

[Alistair Francis <alistair.francis@xilinx.com>]

This work is based on the original work by Li Guang with extra
features added by Peter C and myself.

The idea of this loader is to allow the user to load multiple images
or values into QEMU at startup.

Memory values can be loaded like this: -device loader,addr=0xfd1a0104,data=0x8000000e,data-len=4

Images can be loaded like this: -device loader,file=./images/u-boot.elf,cpu=0

This can be useful and we use it a lot in Xilinx to load multiple images
into a machine at creation (ATF, Kernel and DTB for example).

Tested with the latest Xilinx ZynqMP machine, if I enable EL3 and EL2 I can
boot ATF through to u-boot using the loader to load the images.

It can also be used to set registers.

This patch series makes the load_elf() function more generic by not
requiring an architecture. It also adds new functions load_elf_as(),
load_uimage_as and load_image_targphys_as which allows custom
AddressSpaces when loading images.

V9:
 - Logic and documentation corrections
 - Add address space loading support for uImages and targphys
V8:
 - Allow custom AddressSpaces when loading images
 - Move ELF architecture handling code
 - Rebase
 - Corrections to loading code
 - Corrections to documentation
V7:
 - Fix typo in comment
 - Rebase
V6:
 - Add error checking
V5:
 - Rebase
V4:
 - Re-write documentation
 - Allow the loader to work with every architecture
 - Move the file to hw/core
 - Increase the maximum number of CPUs
 - Make the CPU operations conditional
 - Convert the cpu option to cpu-num
 - Require the user to specify endianess
V2:
 - Add an entry to the maintainers file
 - Add some documentation
 - Perform bounds checking on the data_len
 - Register and unregister the reset in the realise/unrealise
Changes since RFC:
 - Add support for BE


Alistair Francis (8):
  loader: Allow ELF loader to auto-detect the ELF arch
  loader: Use the specified MemoryRegion
  loader: Allow a custom AddressSpace when loading ROMs
  loader: Add AddressSpace loading support to ELFs
  loader: Add AddressSpace loading support to uImages
  loader: Add AddressSpace loading support to targphys
  generic-loader: Add a generic loader
  docs: Add a generic loader explanation document

 MAINTAINERS                      |   6 ++
 docs/generic-loader.txt          |  81 ++++++++++++++++
 hw/core/Makefile.objs            |   2 +
 hw/core/generic-loader.c         | 197 +++++++++++++++++++++++++++++++++++++++
 hw/core/loader.c                 |  89 ++++++++++++++----
 include/hw/core/generic-loader.h |  46 +++++++++
 include/hw/elf_ops.h             |  10 +-
 include/hw/loader.h              |  73 ++++++++++++++-
 8 files changed, 479 insertions(+), 25 deletions(-)
 create mode 100644 docs/generic-loader.txt
 create mode 100644 hw/core/generic-loader.c
 create mode 100644 include/hw/core/generic-loader.h

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2.7.4