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hw/arm: xlnx-versal-virt: Add Xilinx BBRAM device

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Connect the support for Versal Battery-Backed RAM (BBRAM)

The command argument:
  -drive if=pflash,index=0,...
Can be used to optionally connect the bbram to a backend
storage, such that field-programmed values in one
invocation can be made available to next invocation.

The backend storage must be a seekable binary file, and
its size must be 36 bytes or larger. A file with all
binary 0's is a 'blank'.

Signed-off-by: Tong Ho <tong.ho@xilinx.com>
Message-id: 20210917052400.1249094-6-tong.ho@xilinx.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Tong Ho 2021-09-16 22:23:56 -07:00 • committed by Peter Maydell
parent 461a6a6f19
commit 393185bc9d
4 changed files with 60 additions and 0 deletions
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hw/arm/Kconfig
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@ -381,6 +381,7 @@ config XLNX_VERSAL
select XLNX_ZDMA
select XLNX_ZYNQMP
select OR_IRQ
select XLNX_BBRAM
config NPCM7XX
bool