mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-20 00:48:52 +09:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
52 lines
1.7 KiB
Python
52 lines
1.7 KiB
Python
# SPDX-License-Identifier: GPL-2.0+
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# Copyright (c) 2016 Google, Inc
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# Written by Simon Glass <sjg@chromium.org>
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#
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# Entry-type module for 'u-boot'
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#
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import struct
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from entry import Entry
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from blob import Entry_blob
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FD_SIGNATURE = struct.pack('<L', 0x0ff0a55a)
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MAX_REGIONS = 5
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(REGION_DESCRIPTOR, REGION_BIOS, REGION_ME, REGION_GBE,
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REGION_PDATA) = range(5)
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class Region:
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def __init__(self, data, frba, region_num):
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pos = frba + region_num * 4
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val = struct.unpack('<L', data[pos:pos + 4])[0]
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self.base = (val & 0xfff) << 12
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self.limit = ((val & 0x0fff0000) >> 4) | 0xfff
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self.size = self.limit - self.base + 1
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class Entry_intel_descriptor(Entry_blob):
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"""Intel flash descriptor block (4KB)
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This is placed at the start of flash and provides information about
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the SPI flash regions. In particular it provides the base address and
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size of the ME region, allowing us to place the ME binary in the right
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place.
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"""
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def __init__(self, image, etype, node):
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Entry_blob.__init__(self, image, etype, node)
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self._regions = []
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def GetPositions(self):
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pos = self.data.find(FD_SIGNATURE)
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if pos == -1:
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self.Raise('Cannot find FD signature')
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flvalsig, flmap0, flmap1, flmap2 = struct.unpack('<LLLL',
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self.data[pos:pos + 16])
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frba = ((flmap0 >> 16) & 0xff) << 4
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for i in range(MAX_REGIONS):
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self._regions.append(Region(self.data, frba, i))
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# Set the offset for ME only, for now, since the others are not used
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return {'intel-me': [self._regions[REGION_ME].base,
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self._regions[REGION_ME].size]}
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