[PATCH 0/3] Add eFuse access for ZynqMP

[lukas.funke-oss at weidmueller.com]

From: Lukas Funke <lukas.funke at weidmueller.com>


This series adds a driver to read and write ZynqMP eFuses [1]. The
driver can be accessed by the 'efuse_read' and 'efuse_write' subcommands
of the 'zynqmp' command.

Example:

=> zynqmp efuse_read 0xc 0xc
00000000: 85 66 b1 32 43 f2 4a 02 00 00 00 40              .f.<D.:....@

Note: Accessing eFuses requires eFuse access to be enabled in the
underlying PMU firmware.

Use cases are:
 - Reading/writing user specific eFuses to enable device specific
   implementations
 - Revoking SPK IDs
 - Reading SoC version/DNA

[1] https://docs.amd.com/r/en-US/ug1085-zynq-ultrascale-trm/eFUSE



Lukas Funke (3):
  firmware: zynqmp: Add support to access efuses
  amd64: zynqmp: Add command to program efuses
  drivers: misc: Add driver to access ZynqMP efuses

 board/xilinx/zynqmp/cmds.c         | 101 ++++++++++++++
 drivers/firmware/firmware-zynqmp.c |  31 +++++
 drivers/misc/Kconfig               |   8 ++
 drivers/misc/Makefile              |   1 +
 drivers/misc/zynqmp_efuse.c        | 213 +++++++++++++++++++++++++++++
 include/zynqmp_firmware.h          |   2 +
 6 files changed, 356 insertions(+)
 create mode 100644 drivers/misc/zynqmp_efuse.c

-- 
2.30.2