upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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120 lines
3.0 KiB
120 lines
3.0 KiB
# SPDX-License-Identifier: GPL-2.0+
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# Copyright 2018 Google, Inc
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# Written by Simon Glass <sjg@chromium.org>
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#
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# Holds and modifies the state information held by binman
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#
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import re
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from sets import Set
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import os
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import tools
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# Records the device-tree files known to binman, keyed by filename (e.g.
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# 'u-boot-spl.dtb')
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fdt_files = {}
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# Arguments passed to binman to provide arguments to entries
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entry_args = {}
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# Set of all device tree files references by images
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fdt_set = Set()
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# Same as above, but excluding the main one
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fdt_subset = Set()
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# The DTB which contains the full image information
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main_dtb = None
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def GetFdt(fname):
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"""Get the Fdt object for a particular device-tree filename
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Binman keeps track of at least one device-tree file called u-boot.dtb but
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can also have others (e.g. for SPL). This function looks up the given
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filename and returns the associated Fdt object.
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Args:
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fname: Filename to look up (e.g. 'u-boot.dtb').
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Returns:
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Fdt object associated with the filename
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"""
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return fdt_files[fname]
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def GetFdtPath(fname):
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"""Get the full pathname of a particular Fdt object
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Similar to GetFdt() but returns the pathname associated with the Fdt.
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Args:
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fname: Filename to look up (e.g. 'u-boot.dtb').
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Returns:
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Full path name to the associated Fdt
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"""
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return fdt_files[fname]._fname
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def SetEntryArgs(args):
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"""Set the value of the entry args
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This sets up the entry_args dict which is used to supply entry arguments to
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entries.
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Args:
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args: List of entry arguments, each in the format "name=value"
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"""
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global entry_args
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entry_args = {}
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if args:
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for arg in args:
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m = re.match('([^=]*)=(.*)', arg)
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if not m:
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raise ValueError("Invalid entry arguemnt '%s'" % arg)
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entry_args[m.group(1)] = m.group(2)
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def GetEntryArg(name):
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"""Get the value of an entry argument
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Args:
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name: Name of argument to retrieve
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Returns:
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String value of argument
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"""
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return entry_args.get(name)
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def Prepare(dtb):
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"""Get device tree files ready for use
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This sets up a set of device tree files that can be retrieved by GetFdts().
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At present there is only one, that for U-Boot proper.
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Args:
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dtb: Main dtb
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"""
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global fdt_set, fdt_subset, fdt_files, main_dtb
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# Import these here in case libfdt.py is not available, in which case
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# the above help option still works.
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import fdt
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import fdt_util
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# If we are updating the DTBs we need to put these updated versions
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# where Entry_blob_dtb can find them. We can ignore 'u-boot.dtb'
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# since it is assumed to be the one passed in with options.dt, and
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# was handled just above.
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main_dtb = dtb
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fdt_files.clear()
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fdt_files['u-boot.dtb'] = dtb
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fdt_set = Set()
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fdt_subset = Set()
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def GetFdts():
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"""Yield all device tree files being used by binman
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Yields:
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Device trees being used (U-Boot proper, SPL, TPL)
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"""
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yield main_dtb
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