linux-toradex.git/include/linux/of_fdt.h, branch v2.6.36-rc8

of/flattree: Make unflatten_device_tree() safe to call from any arch

2010-04-29T00:20:29+00:00

This patch makes unflatten_device_tree() safe to call from any arch
setup code with the following changes:
- Make sure initial_boot_params actually points to a device tree blob
  before unflattening
- Make sure the initial_boot_params->magic field is correct
- If CONFIG_OF_FLATTREE is not set, then make unflatten_device_tree()
  an empty static inline function.

This patch also adds some additional debug output to the top of
unflatten_device_tree().

Signed-off-by: Grant Likely

of/flattree: make of_fdt.h safe to unconditionally include.

2010-04-29T00:20:29+00:00

If CONFIG_OF_FLATTREE is not set, then don't process the body of
linux/of_fdt.h

Signed-off-by: Grant Likely

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: Remove old and misplaced function declarations

2010-02-14T14:13:38+00:00

The following functions don't exist:
  finish_device_tree()
  print_properties()
  prom_n_intr_cells()
  prom_get_irq_senses()

The following functions are in drivers/of/base.c, so the declaration
belongs in of.h instead of of_fdt.h
  of_machine_is_compatible()
  prom_add_property()
  prom_remove_property()
  prom_update_property()

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

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: 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 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/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

of: add 'of_' prefix to machine_is_compatible()

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

machine is compatible is an OF-specific call.  It should have
the of_ prefix to protect the global namespace.

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

of/flattree: merge early_init_dt_scan_chosen()

2009-12-11T06:42:21+00:00

Merge common code between PowerPC and Microblaze.  This patch
splits the arch-specific stuff out into a new function,
early_init_dt_scan_chosen_arch().

Signed-off-by: Grant Likely 
Tested-by: Wolfram Sang 
Acked-by: Benjamin Herrenschmidt