linux-toradex.git/drivers/of, branch v2.6.34-rc1

of: move definition of of_chosen into common code.

2010-02-14T14:13:55+00:00

Rather than defining of_chosen in each arch, it can be defined for all
in driver/of/base.c

Signed-off-by: Grant Likely 
Acked-by: Benjamin Herrenschmidt 
Acked-by: Michal Simek

of/flattree: Don't assume HAVE_LMB

2010-02-14T14:13:47+00:00

We don't always have lmb available, so make arches provide an
early_init_dt_alloc_memory_arch() to handle the allocation of
memory in the fdt code.

When we don't have lmb.h included, we need asm/page.h for __va.

Signed-off-by: Jeremy Kerr 
Signed-off-by: Grant Likely 
Acked-by: Benjamin Herrenschmidt 
Acked-by: Michal Simek

of/flattree: Make the kernel accept ePAPR style phandle information

2010-02-09T15:34:10+00:00

Currently when processing flattened device trees, the kernel expects
the phandle in a property called "linux,phandle".  The ePAPR spec -
not being Linux specific - instead requires phandles to be encoded in
a property named simply "phandle".  This patch makes the kernel accept
either form when unflattening the device tree.

Signed-off-by: David Gibson 
Signed-off-by: Grant Likely

of/flattree: endian-convert members of boot_param_header

2010-02-09T15:34:10+00:00

The boot_param_header has big-endian fields, so change the types to
__be32, and perform endian conversion when we access them.

Signed-off-by: Jeremy Kerr 
Signed-off-by: Grant Likely

of: assume big-endian properties, adding conversions where necessary

2010-02-09T15:34:10+00:00

Properties in the device tree are specified as big-endian. At present,
the only platforms to support device trees are also big-endian, so we've
been acessing the properties as raw values.

We'd like to add device tree support to little-endian platforms too, so
add endian conversion to the sites where we access property values in
the common of code.

Compiled on powerpc (ppc44x_defconfig & ppc64_defconfig) and arm (fdt
support only for now).

Signed-off-by: Jeremy Kerr 
Signed-off-by: Grant Likely

of: use __be32 for cell value accessors

2010-02-09T15:34:10+00:00

Currently, we're using u32 for cell values, and hence assuming
host-endian device trees.

As we'd like to support little-endian platforms, use a __be32 for cell
values, and convert in the cell accessors.

Signed-off-by: Jeremy Kerr 
Signed-off-by: Grant Likely

of/flattree: use OF_ROOT_NODE_{SIZE,ADDR}_CELLS DEFAULT for fdt parsing

2010-02-09T15:34:10+00:00

At present we're using hard-coded values for defaults when parsing the
FDT. This change uses the #defines instead.

Signed-off-by: Jeremy Kerr 
Signed-off-by: Grant Likely

of/flattree: use callback to setup initrd from /chosen

2010-02-09T15:34:10+00:00

At present, the fdt code sets the kernel-wide initrd_start and
initrd_end variables when parsing /chosen. On ARM, we only set these
once the bootmem has been reserved.

This change adds an arch hook to setup the initrd from the device
tree:

 void early_init_dt_setup_initrd_arch(unsigned long start,
				      unsigned long end);

The arch-specific code can then setup the initrd however it likes.

Compiled on powerpc, with CONFIG_BLK_DEV_INITRD=y and =n.

Signed-off-by: Jeremy Kerr 
Signed-off-by: Grant Likely

of: include linux/proc_fs.h

2010-02-09T15:34:09+00:00

We use a few procfs-specific functions (eg, proc_device_tree_*) which
aren't covered by the current includes. This causes the following build
error on arm:

drivers/of/base.c: In function 'prom_add_property':
drivers/of/base.c:861: error: implicit declaration of function 'proc_device_tree_add_prop'
drivers/of/base.c: In function 'prom_remove_property':
drivers/of/base.c:902: error: implicit declaration of function 'proc_device_tree_remove_prop'
drivers/of/base.c: In function 'prom_update_property':
drivers/of/base.c:946: error: implicit declaration of function 'proc_device_tree_update_prop'

Add proc_fs.h for these prototypes.

Signed-off-by: Jeremy Kerr 
Signed-off-by: Grant Likely

of/flattree: merge early_init_dt_scan_memory() common code

2010-02-09T15:33:10+00:00

Merge common code between PowerPC and Microblaze architectures.

Signed-off-by: Grant Likely 
Acked-by: Michal Simek