From: Kane-Chen-AS <kane_c...@aspeedtech.com>
This patch series extends the QEMU model for the ASPEED OTP (One-Time
Programmable) memory device with block backend support and tighter
integration with the SoC and machine configuration.
The OTP model simulates a simple fuse array, used in ASPEED SoCs
for secure boot and configuration purposes. The updated model now
supports loading initial OTP content from a file via the QEMU CLI.
Example usage:
./qemu-system-arm \
-machine ast2600-evb,otpmem=otp \
-blockdev driver=file,filename=otpmem.img,node-name=otp \
-global aspeed-otp.drive=otp \
...
ChangeLog
---------
v4:
- Add a 'drive' property to allow backing OTP data with a block device
- Expose a machine parameter (`-machine otpmem=XXX`) for convenient
aliasing of the OTP drive via QOM path
v3:
- Switched to object_property_set_int() for setting "size"
- Simplified qdev_realize() error handling by passing errp directly
- Added "drive" property to OTP model for future extensibility
v2:
- Rename device from 'aspeed_otpmem' to 'aspeed_otp' and move it to hw/nvram/
- Move OTP device realization from instance_init to the realize function
- Improve error logging with qemu_log_mask() and remove unused error propagation
v1:
- Initial version
---
Kane-Chen-AS (5):
hw/misc/aspeed_otp: Add ASPEED OTP memory device model
hw/misc/aspeed_sbc: Connect ASPEED OTP memory device to SBC
hw/arm: Integrate ASPEED OTP memory support into AST2600 SoCs
hw/misc/aspeed_otp: Add 'drive' property to support block backend
hw/misc/aspeed_sbc: Add machine parameter to alias OTP drive property
include/hw/misc/aspeed_sbc.h | 5 ++
include/hw/nvram/aspeed_otp.h | 33 ++++++++++
hw/arm/aspeed.c | 20 ++++++
hw/arm/aspeed_ast2600.c | 2 +-
hw/misc/aspeed_sbc.c | 121 ++++++++++++++++++++++++++++++++++
hw/nvram/aspeed_otp.c | 113 +++++++++++++++++++++++++++++++
hw/misc/trace-events | 5 ++
hw/nvram/meson.build | 4 ++
8 files changed, 302 insertions(+), 1 deletion(-)
create mode 100644 include/hw/nvram/aspeed_otp.h
create mode 100644 hw/nvram/aspeed_otp.c
--
2.43.0
