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  1. 22 7月, 2015 7 次提交
    • S
      dm: Reduce SPL device tree size · fa78e0a3
      由 Simon Glass 提交于 
      The SPL device tree size must be minimised to save memory. Only include
properties that are needed by SPL - this is determined by the presence
of the "u-boot,dm-pre-reloc" property. Also remove a predefined list of
unused properties from the nodes that remain.
Signed-off-by: NSimon Glass <sjg@chromium.org>
      fa78e0a3
    • S
      fdt: Add fdtgrep tool · 1043d0a0
      由 Simon Glass 提交于 
      This tool allows us to extract subsets of a device tree file. It is used by
the SPL vuild, which needs to cut down the device tree size for use in
limited memory.

This tool was originally written for libfdt but it has not been accepted
upstream, so for now, include it in U-Boot. Several utilfdt library
functions been included inline here.

If fdtgrep is eventually accepted in libfdt then we can bring that version
of libfdt in here, and drop fdtgrep (requiring that fdtgrep is provided by
the user).

If it is not accepted then another approach would be to write a special
tool for chopping down device tree files for SPL. While it would use the
same libfdt support, it would be less code than fdtgrep.c because it would
not have general-purpose functions.

Another approach (which was used with v1 of this series) is to sprinkler all
the device tree files with #ifdef. I don't like that idea.
Signed-off-by: NSimon Glass <sjg@chromium.org>
      1043d0a0
    • S
      fdt: Add fdt_first/next_region() functions · c3c4c005
      由 Simon Glass 提交于 
      These have been sent upstream but not accepted to libfdt. For now, bring
these into U-Boot to enable fdtgrep to operate. We will use fdtgrep to
cut device tree files down for SPL.
Signed-off-by: NSimon Glass <sjg@chromium.org>
      c3c4c005
    • S
      fdt: Add a function to remove unused strings from a device tree · 8f6e2e1e
      由 Simon Glass 提交于 
      Property names are stored in a string table. When a node property is
removed, the string table is not updated since other nodes may have a
property with the same name.

Thus it is possible for the string table to build up a number of unused
strings. Add a function to remove these. This works by building a new device
tree from the old one, adding strings one by one as needed.
Signed-off-by: NSimon Glass <sjg@chromium.org>
      8f6e2e1e
    • S
      mkimage: Display a better list of available image types · 5b9d44df
      由 Simon Glass 提交于 
      Offer to display the available image types in help. Also, rather than
hacking the genimg_get_type_id() function to display a list of types,
do this in the tool. Also, sort the list.

The list of image types is quite long, and hard to discover. Print it out
when we show help information.
Signed-off-by: NSimon Glass <sjg@chromium.org>
      5b9d44df
    • S
      sandbox: Enable dhry command · a3c3cff0
      由 Simon Glass 提交于 
      Provide access to the dhrystone benchmark command.
Signed-off-by: NSimon Glass <sjg@chromium.org>
      a3c3cff0
    • S
      Add a dhrystone benchmark command · d1389403
      由 Simon Glass 提交于 
      Drystone provides a convenient sanity check that the CPU is running at full
speed. Add this as a command which can be enabled as needed.

Note: I investigated using Coremark for this but there was a license
agreement and I could not work out if it was GPL-compatible.
Signed-off-by: NSimon Glass <sjg@chromium.org>
      d1389403
  3. 21 7月, 2015 33 次提交