[PATCH v2 0/3] Initial support for One-Time Programmable Memory (OTP) in BCM2835

[Rayhan Faizel <rayhan.faizel@gmail.com>]

All BCM2835 boards have on-board OTP memory with 66 32-bit rows. Usually,
its contents are accessible via mailbox commands.

[Changes in v2]

- Replace read/write with get/set in bcm2835_otp.c.
- Use impl instead of valid in bcm2835_otp.c.
- Replace all constant values with macros defined in bcm2835_otp.h.
- Change memory region size of OTP device to 0x80.
- After further testing on a real Raspberry Pi 3, I noticed a few things
contrary to my initial assumptions:
-- The customer OTP lock bit is bit 6 of row 32, NOT bit 30 of row 30. This is
currently undocumented to my knowledge.
-- The above lock indeed applies to the private key as well.

Rayhan Faizel (3):
  hw/nvram: Add BCM2835 OTP device
  hw/arm: Connect OTP device to BCM2835
  hw/misc: Implement mailbox properties for customer OTP and device
    specific private keys

 hw/arm/bcm2835_peripherals.c         |  15 ++-
 hw/misc/bcm2835_property.c           |  87 +++++++++++++
 hw/nvram/bcm2835_otp.c               | 187 +++++++++++++++++++++++++++
 hw/nvram/meson.build                 |   1 +
 include/hw/arm/bcm2835_peripherals.h |   3 +-
 include/hw/arm/raspberrypi-fw-defs.h |   2 +
 include/hw/misc/bcm2835_property.h   |   2 +
 include/hw/nvram/bcm2835_otp.h       |  67 ++++++++++
 8 files changed, 362 insertions(+), 2 deletions(-)
 create mode 100644 hw/nvram/bcm2835_otp.c
 create mode 100644 include/hw/nvram/bcm2835_otp.h

-- 
2.34.1