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and fix all in-tree references. Architecture-specific documentation is being moved into Documentation/arch/ as a way of cleaning up the top-level documentation directory and making the docs hierarchy more closely match the source hierarchy. Signed-off-by: Costa Shulyupin <costa.shul@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20230725043835.2249678-1-costa.shul@redhat.com
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35 lines
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.. SPDX-License-Identifier: GPL-2.0
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.. include:: ../../disclaimer-zh_CN.rst
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:Original: Documentation/arch/mips/booting.rst
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:翻译:
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司延腾 Yanteng Si <siyanteng@loongson.cn>
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.. _cn_booting:
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BMIPS设备树引导
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------------------------
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一些bootloaders只支持在内核镜像开始地址处的单一入口点。而其它
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bootloaders将跳转到ELF的开始地址处。两种方案都支持的；因为
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CONFIG_BOOT_RAW=y and CONFIG_NO_EXCEPT_FILL=y, 所以第一条指令
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会立即跳转到kernel_entry()入口处执行。
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与arch/arm情况(b)类似，dt感知的引导加载程序需要设置以下寄存器:
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a0 : 0
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a1 : 0xffffffff
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a2 : RAM中指向设备树块的物理指针(在chapterII中定义)。
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设备树可以位于前512MB物理地址空间(0x00000000 -
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0x1fffffff)的任何位置，以64位边界对齐。
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传统bootloaders不会使用这样的约定，并且它们不传入DT块。
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在这种情况下，Linux将通过选中CONFIG_DT_*查找DTB。
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以上约定只在32位系统中定义，因为目前没有任何64位的BMIPS实现。
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