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https://github.com/brain-hackers/u-boot-brain
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Sometimes we want to include TPL for x86 platforms, such as when we want to select between different SPL images (e.g. for Chrome OS verified boot). Add support for this. Signed-off-by: Simon Glass <sjg@chromium.org>
31 lines
1.1 KiB
Python
31 lines
1.1 KiB
Python
# SPDX-License-Identifier: GPL-2.0+
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# Copyright (c) 2018 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 the 16-bit x86 start-up code for U-Boot TPL
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#
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from entry import Entry
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from blob import Entry_blob
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class Entry_x86_start16_tpl(Entry_blob):
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"""x86 16-bit start-up code for TPL
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Properties / Entry arguments:
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- filename: Filename of tpl/u-boot-x86-16bit-tpl.bin (default
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'tpl/u-boot-x86-16bit-tpl.bin')
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x86 CPUs start up in 16-bit mode, even if they are 64-bit CPUs. This code
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must be placed at a particular address. This entry holds that code. It is
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typically placed at offset CONFIG_SYS_X86_START16. The code is responsible
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for changing to 32-bit mode and starting TPL, which in turn jumps to SPL.
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If TPL is not being used, the 'x86_start16_spl or 'x86_start16' entry types
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may be used instead.
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"""
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def __init__(self, section, etype, node):
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Entry_blob.__init__(self, section, etype, node)
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def GetDefaultFilename(self):
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return 'tpl/u-boot-x86-16bit-tpl.bin'
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