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authorKane-Chen-AS <kane_chen@aspeedtech.com>2025-08-12 17:40:04 +0800
committerCédric Le Goater <clg@redhat.com>2025-09-29 18:00:20 +0200
commit02cebef5a140a0008a8bb0d3db6e33a4e7e4a9d2 (patch)
tree237b4be561f1e38c0b2af349cc76cae8fd1f549f /docs/system
parentfdad6ec30dfb87df0980887a4c22e55ccf65f9c3 (diff)
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hw/misc/aspeed_sbc: Add CAMP2 support for OTP data reads
The OTP space contains three types of entries: data, conf, and strap.
Data entries consist of two DWORDs, while the other types contain
only one DWORD. This change adds the R_CAMP2 register (0x024 / 4) to
store the second DWORD when reading from the OTP data region.

With this enhancement, OTP reads now correctly return both DWORDs for
data entries via the CAMP registers, along with improved address
validation and error handling.

Signed-off-by: Kane-Chen-AS <kane_chen@aspeedtech.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20250812094011.2617526-8-kane_chen@aspeedtech.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
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