[Qemu-devel] [RFC PATCH v1 0/4] SPI bus support + Xilinx SPI controller

["Peter A. G. Crosthwaite" <peter.crosthwaite@petalogix.com>]

Add support for Serial Peripheral interface (SPI) as a proper bus standard. Includes an example device (m25p80 SPI flash), an example controller (Xilinx XPS SPI) and adds it to all to a machine model (petalogix_ml605_mmu.c).

Patch 1 adds the Serial Peripheral Interface (SPI) protocol as a bus and defines a QOM type for slave devices. The approach to doing this is based looseley on the existing I2C QOMification.

Patch 2 is a device model for the m25p80 style SPI flash chip.

Patch 3 is  the Xilinx XPS SPI contoller. Its a sysbus device that instantiates a spi bus, and interfaces the two (as per the controllers functionality)

Patch 4 instantiates the XPS SPI controller in the petalogix ML605 reference platform and connects one m25p80 to it.

Peter A. G. Crosthwaite (4):
  SPI: initial support
  m25p80: initial verion
  xilinx_spi: initial version
  petalogix-ml605: added spi controller with m25p80

 Makefile.target          |    3 +
 hw/m25p80.c              |  495 ++++++++++++++++++++++++++++++++++++++++++++++
 hw/petalogix_ml605_mmu.c |   19 ++
 hw/spi.c                 |  175 ++++++++++++++++
 hw/spi.h                 |   86 ++++++++
 hw/xilinx_spi.c          |  477 ++++++++++++++++++++++++++++++++++++++++++++
 6 files changed, 1255 insertions(+), 0 deletions(-)
 create mode 100644 hw/m25p80.c
 create mode 100644 hw/spi.c
 create mode 100644 hw/spi.h
 create mode 100644 hw/xilinx_spi.c

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1.7.3.2