====== nvram2env ======

**nvram2env** - pseudo driver that copy nvram-like data from flash to kenv.

===== Usage =====

==== Include into kernel build ====
add following line to sys/conf/files file:

<code>
dev/nvram/nvram2env.c           optional nvram2env
</code>

add following line to your kernel CONFIG file:

<code>
device nvram2env
</code>

==== Hints definition ====
That module configured via hints.

Usage in U-Boot case:

<code>
hint.nvram.0.base=0x1f030000
hint.nvram.0.maxsize=0x2000
hint.nvram.0.flags=3 # 1 = No check, 2 = Format Generic
hint.nvram.1.base=0x1f032000
hint.nvram.1.maxsize=0x4000
hint.nvram.1.flags=3 # 1 = No check, 2 = Format Generic
</code>

CFE nvram with fallback:

<code>
hint.nvram.0.base=0x1fff8000
hint.nvram.0.fallbackbase=0x1fc00400
hint.nvram.0.flags=4 # 4 = Format Broadcom
</code>

but seems for CFE nvram preferred to read both blocks:

<code>
# NVRAM partition
# Static, CFE internal
hint.nvram.0.flags=0x05 # Broadcom + nocheck
hint.nvram.0.base=0x1fc00400
# Dynamic, editable form CFE, override values from first
hint.nvram.1.flags=0x05 # Broadcom + nocheck
hint.nvram.1.base=0x1cff8000
</code>

==== Code ====
{{aleksandrrybalko/nvram2env/nvram2env.c?linkonly|nvram2env.c}}