f74db7258c
Add support for reset -c flag to explicitly request cold reset. This provides symmetry with -w (warm) and -u (firmware UI) flags. For EFI apps, this performs EFI_RESET_COLD which does a full system reboot without going to firmware setup interface. Series-to: concept Series-cc: heinrich Cover-letter: efi: Improve integration of the app with a Shim environment This series collects together various small fixes and improvements which make it easier to use the U-Boot EFI app in a bootflow which includes Shim: - 'Reset' back to the caller (e.g. EDK2) - Machine reset using cold and warm reset - Reset and enter the firmware UI - Shim command now supports persistent debug - Bootmenu shows the real media for each bootflow rather than just 'efi' END Signed-off-by: Simon Glass <sjg@chromium.org>
40 lines
794 B
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40 lines
794 B
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.. SPDX-License-Identifier: GPL-2.0+
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.. index::
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single: reset (command)
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reset command
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=============
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Synopsis
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--------
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::
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reset [-c] [-w] [-u]
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Description
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-----------
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Perform reset of the CPU. By default does COLD reset, which resets CPU,
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DDR and peripherals, on some boards also resets external PMIC.
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-w
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Do warm WARM, reset CPU but keep peripheral/DDR/PMIC active.
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-h
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Do a hot reset, if supported, which returns back to the program which
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started U-Boot.
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-u
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Reset to firmware UI (EFI app only). Sets the
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EFI_OS_INDICATIONS_BOOT_TO_FW_UI bit in the OsIndications variable and
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performs a warm reset, causing the firmware to boot directly to its
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setup/configuration interface.
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Return value
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------------
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The return value $? is always set to 0 (true).
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