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3ba9b1f7bd
Since turning from old build flow. New Altera SoCFPGA requires converting handsoff conversion via the python script. This is from official provided, and now sync to U-Boot with better location at tools/cv_xxxx. Meantime, requirement.txt is also provided to further explain the libraries require for these scripts. Signed-off-by: Brian Sune <briansune@gmail.com> Reviewed-by: Tien Fong Chee <tien.fong.chee@altera.com>
115 lines
3.6 KiB
Python
Executable File
115 lines
3.6 KiB
Python
Executable File
# SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
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"""
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Data models for XML files required for generating a preloader.
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These classes encapsulate the complexities of XML DOM in order to
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make retrieving data from XML files easier and more reliable.
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By shielding data model deserialization from data consumers,
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it'd be easier to switch to other formats such as JSON if required.
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There are some assumptions about how these XML files are structured
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such as the hierarchy of elements and ordering of attributes, these
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are relatively safe assumptions for as long as the XML files are
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always generated by HPS megawizard (isw.tcl) and are not hand-edited.
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Copyright (C) 2022 Intel Corporation <www.intel.com>
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Author: Lee, Kah Jing <kah.jing.lee@intel.com>
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"""
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import xml.dom.minidom
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def getSingletonElementByTagName(parent, tagName):
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"""
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Find tag by name and ensure that there is exactly one match
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"""
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nodes = parent.getElementsByTagName(tagName)
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if len(nodes) == 0:
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raise Exception("Can't find element: " + tagName)
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elif len(nodes) > 1:
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raise Exception("Unexpected multiple matches for singleton element: " + tagName)
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else:
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return nodes[0]
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class hps(object):
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"""
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Data model for hps.xml
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"""
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@staticmethod
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def create(file):
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""" hps model """
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return hps(file)
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def __init__(self, file):
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""" hps model initialization """
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self.dom = xml.dom.minidom.parse(file)
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try:
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# Look for <hps> node
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self.hpsNode = getSingletonElementByTagName(self.dom, "hps")
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# Look for <hps><system> node
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self.hpsSystemNode = getSingletonElementByTagName(self.hpsNode, "system")
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except Exception:
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raise Exception("Can't initialize from file: " + file)
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def getSystemConfig(self, param):
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""" parse system configuration tag """
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hpsSystemConfigNode = None
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# Look for <hps><system><config ...> nodes
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for node in self.hpsSystemNode.getElementsByTagName("config"):
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# assume name is the first attribute as in <config name="..." ...>
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nameAttrNode = node.attributes.item(0)
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if nameAttrNode.nodeName == "name" and nameAttrNode.nodeValue == param:
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# assume value is the second attribute as in <config name="..." value="...">
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valueAttrNode = node.attributes.item(1)
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if valueAttrNode.nodeName == "value":
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hpsSystemConfigNode = valueAttrNode
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break
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if hpsSystemConfigNode == None:
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raise ValueError("Can't find <hps><system><config> node: " + param)
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return hpsSystemConfigNode.nodeValue
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class emif(object):
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"""
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Data model for emif.xml.
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"""
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@staticmethod
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def create(file):
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""" emif model """
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return emif(file)
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def __init__(self, file):
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""" emif model initialization """
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self.dom = xml.dom.minidom.parse(file)
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try:
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# Look for <emif> node
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self.emifNode = getSingletonElementByTagName(self.dom, "emif")
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# Look for <emif><pll> node
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self.emifPllNode = getSingletonElementByTagName(self.emifNode, "pll")
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except Exception:
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raise Exception("Can't initialize from file: " + file)
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def getPllDefine(self, param):
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""" parse pll define tag """
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emifPllDefineNode = None
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# Look for <emif><pll><define ...> nodes
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for node in self.emifPllNode.getElementsByTagName("define"):
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nameAttrNode = node.attributes.item(0)
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# assume name is the first attribute as in <define name="..." ...>
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if nameAttrNode.nodeName == "name" and nameAttrNode.nodeValue == param:
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# assume value is the second attribute as in <config name="..." value="...">
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valueAttrNode = node.attributes.item(1)
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if valueAttrNode.nodeName == "value":
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emifPllDefineNode = valueAttrNode
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break
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if emifPllDefineNode == None:
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raise Exception("Can't find EMIF PLL define node: " + param)
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return emifPllDefineNode.nodeValue
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