4113d6a01c
Create a new file in lib/efi to handle conversion of keys from EFI format to characters, so we can use it from multiple places. Update the serial_efi driver accordingly. Signed-off-by: Simon Glass <sjg@chromium.org>
41 lines
892 B
C
41 lines
892 B
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* EFI input key decoding functions
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*
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* Copyright (c) 2015 Google, Inc
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* Written by Simon Glass <sjg@chromium.org>
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*/
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#define LOG_CATEGORY LOGC_EFI
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#include <efi.h>
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#include <efi_api.h>
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#include <cli.h>
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int efi_decode_key(struct efi_input_key *key)
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{
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static const char conv_scan[] = {0, 'p', 'n', 'f', 'b', 'a', 'e', 0, 8};
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int ch;
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ch = key->unicode_char;
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/*
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* Unicode char 8 (for backspace) is never returned. Instead we get a
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* key scan code of 8. Handle this so that backspace works correctly
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* in the U-Boot command line.
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*/
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if (!ch && key->scan_code < sizeof(conv_scan)) {
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ch = conv_scan[key->scan_code];
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if (ch >= 'a')
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ch -= 'a' - 1;
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}
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log_debug(" [%x %x %x] ", ch, key->unicode_char, key->scan_code);
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return ch;
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}
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int efi_decode_key_ex(struct efi_key_data *key_data)
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{
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return efi_decode_key(&key_data->key);
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}
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