linux-toradex.git/arch/powerpc/kernel/nvram_64.c, branch v3.9.2

powerpc/nvram: Generalize code for OS partitions in NVRAM

2011-03-04T07:19:04+00:00

Adapt the functions used to create and write to the RTAS-log partition
to work with any OS-type partition.

Signed-off-by: Jim Keniston 
Signed-off-by: Benjamin Herrenschmidt

powerpc/nvram: Handle partition names >= 12 chars

2010-11-30T04:43:51+00:00

The name field in the nvram_header can be < 12 chars, null-terminated,
or 12 chars without the null.  Handle this safely.

Signed-off-by: Jim Keniston 
Signed-off-by: Benjamin Herrenschmidt

powerpc/nvram: Fix NVRAM partition list setup

2010-11-30T04:43:51+00:00

Simplify creation and use of the NVRAM partition list.

Signed-off-by: Jim Keniston 
Signed-off-by: Benjamin Herrenschmidt

powerpc/nvram: Move the log partition stuff to pseries

2010-11-30T04:37:45+00:00

The nvram log partition stuff currently in nvram_64.c is really
pseries specific. It isn't actually used on anything else (despite
the fact that we ran the code to setup the partition on anything
except powermac) and the log format is specific to pseries RTAS
implementation. So move it where it belongs

Signed-off-by: Benjamin Herrenschmidt

powerpc/nvram: Change nvram_setup_partition() to use new helper

2010-11-30T04:35:08+00:00

This changes the function to use nvram_find_partition() instead
of doing the lookup "by hand". It also makes some of the logic
clearer and prints out more useful diagnostic information.

Signed-off-by: Benjamin Herrenschmidt

powerpc/nvram: Add nvram_find_partition()

2010-11-30T04:34:05+00:00

Signed-off-by: Benjamin Herrenschmidt

powerpc/nvram: Improve partition removal

2010-11-30T04:34:03+00:00

Existing code is nasty, has bugs etc... rewrite the function
more simply, and make it take the signature and optional
name of the partitions to remove as arguments, thus making
it a more generic utility.

We also try to remove a log partition that we find and is too
small rather than creating a duplicate.

Signed-off-by: Benjamin Herrenschmidt

powerpc/nvram: Shuffle code around in nvram_create_partition()

2010-11-30T04:33:58+00:00

This error log stuff is really pseries specific. As a first step we move
the initialization of these variables to the caller of
nvram_create_partition(), which is also slightly reorganized so we
setup the free partition before we clear the new partition, so the
chance of an error during clear leaving us with invalid headers
is lessened.

Signed-off-by: Benjamin Herrenschmidt

powerpc/nvram: Completely clear a new partition

2010-11-30T04:32:10+00:00

When creating a partition, we clear it entirely rather than
just the first two words since the previous code was rather
specific to the pseries log partition format.

Signed-off-by: Benjamin Herrenschmidt

powerpc/nvram: Ensure that the partition header/block size is right

2010-11-30T04:32:08+00:00

Use BUILD_BUG_ON to ensure the structure representing a partition
header have the right size.

Signed-off-by: Benjamin Herrenschmidt