[v4,0/2] add Intel FPGA image reload support

Message

Zhang, Tianfei Aug. 15, 2022, 6:07 a.m. UTC

This patchset adds FPGA image reload support on Intel PAC N3000 Card.
Image reload means that a reload mechanism of an FPGA, BMC, or
firmware image from FLASH or EEPROM after flash or program the images
without power cycle the server.

This patchset introduces 2 new sysfs files for query the available
images and trigger a image reload.

patch 1: add the available_images and image_load sysfs files.
Write a key word into image_load sysfs file to trigger a reload of an
FPGA, BMC, or firmware image from FLASH or EEPROM.
patch 2: add a trigger to update a new Retimer firmware.

v4:
From Yilun and Matthew's comments, provide more detail about how
to trigger the FPGA/BMC image reload.
v3:
From Lee Jones's comment, uses regmap_update_bits() API instead of
the wrapper of m10bmc_sys_update_bits().
v2:
add more detail about how to use the image_load sysfs files in ABI
documentation.

Russ Weight (2):
  fpga: m10bmc-sec: add sysfs to trigger FPGA/BMC images reload
  fpga: m10bmc-sec: add m10bmc_sec_retimer_load callback

 .../sysfs-driver-intel-m10-bmc-sec-update     |  41 +++
 drivers/fpga/intel-m10-bmc-sec-update.c       | 253 ++++++++++++++++++
 include/linux/mfd/intel-m10-bmc.h             |  31 +++
 3 files changed, 325 insertions(+)