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binman: Add info to allow safely repacking an image later

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At present it is not possible to discover the contraints to repacking an
image (e.g. maximum section size) since this information is not preserved
from the original image description.

Add new 'orig-offset' and 'orig-size' properties to hold this. Add them to
the main device tree in the image.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2019-07-20 12:23:51 -06:00
parent 10f9d0066b
commit 12bb1a99c2
8 changed files with 165 additions and 14 deletions
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21
tools/binman/state.py
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@@ -226,7 +226,7 @@ def GetAllFdts():
if dtb != main_dtb:
yield dtb
def GetUpdateNodes(node):
def GetUpdateNodes(node, for_repack=False):
"""Yield all the nodes that need to be updated in all device trees
The property referenced by this node is added to any device trees which
@@ -235,25 +235,31 @@ def GetUpdateNodes(node):
Args:
node: Node object in the main device tree to look up
for_repack: True if we want only nodes which need 'repack' properties
added to them (e.g. 'orig-offset'), False to return all nodes. We
don't add repack properties to SPL/TPL device trees.
Yields:
Node objects in each device tree that is in use (U-Boot proper, which
is node, SPL and TPL)
"""
yield node
for dtb, fname, _ in output_fdt_info.values():
for dtb, fname, entry in output_fdt_info.values():
if dtb != node.GetFdt():
if for_repack and entry.etype != 'u-boot-dtb':
continue
other_node = dtb.GetNode(fdt_path_prefix + node.path)
if other_node:
yield other_node
def AddZeroProp(node, prop):
def AddZeroProp(node, prop, for_repack=False):
"""Add a new property to affected device trees with an integer value of 0.
Args:
prop_name: Name of property
for_repack: True is this property is only needed for repacking
"""
for n in GetUpdateNodes(node):
for n in GetUpdateNodes(node, for_repack):
n.AddZeroProp(prop)
def AddSubnode(node, name):
@@ -283,15 +289,18 @@ def AddString(node, prop, value):
for n in GetUpdateNodes(node):
n.AddString(prop, value)
def SetInt(node, prop, value):
def SetInt(node, prop, value, for_repack=False):
"""Update an integer property in affected device trees with an integer value
This is not allowed to change the size of the FDT.
Args:
prop_name: Name of property
for_repack: True is this property is only needed for repacking
"""
for n in GetUpdateNodes(node):
for n in GetUpdateNodes(node, for_repack):
tout.Detail("File %s: Update node '%s' prop '%s' to %#x" %
(node.GetFdt().name, node.path, prop, value))
n.SetInt(prop, value)
def CheckAddHashProp(node):