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+/*
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+ * efi_selftest_textinput
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+ *
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+ * Copyright (c) 2018 Heinrich Schuchardt <xypron.glpk@gmx.de>
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+ *
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+ * SPDX-License-Identifier: GPL-2.0+
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+ *
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+ * Provides a unit test for the EFI_SIMPLE_TEXT_INPUT_PROTOCOL.
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+ * The unicode character and the scan code are printed for text
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+ * input. To run the test:
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+ *
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+ * setenv efi_selftest text input
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+ * bootefi selftest
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+ */
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+
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+#include <efi_selftest.h>
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+
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+struct translate {
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+ u16 code;
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+ u16 *text;
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+};
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+
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+static struct efi_boot_services *boottime;
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+
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+static struct translate control_characters[] = {
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+ {0, L"Null"},
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+ {8, L"BS"},
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+ {9, L"TAB"},
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+ {10, L"LF"},
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+ {13, L"CR"},
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+ {0, NULL},
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+};
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+
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+static u16 ch[] = L"' '";
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+static u16 unknown[] = L"unknown";
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+
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+static struct translate scan_codes[] = {
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+ {0x00, L"Null"},
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+ {0x01, L"Up"},
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+ {0x02, L"Down"},
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+ {0x03, L"Right"},
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+ {0x04, L"Left"},
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+ {0x05, L"Home"},
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+ {0x06, L"End"},
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+ {0x07, L"Insert"},
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+ {0x08, L"Delete"},
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+ {0x09, L"Page Up"},
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+ {0x0a, L"Page Down"},
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+ {0x0b, L"FN 1"},
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+ {0x0c, L"FN 2"},
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+ {0x0d, L"FN 3"},
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+ {0x0e, L"FN 4"},
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+ {0x0f, L"FN 5"},
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+ {0x10, L"FN 6"},
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+ {0x11, L"FN 7"},
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+ {0x12, L"FN 8"},
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+ {0x13, L"FN 9"},
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+ {0x14, L"FN 10"},
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+ {0x15, L"FN 11"},
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+ {0x16, L"FN 12"},
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+ {0x17, L"Escape"},
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+ {0x68, L"FN 13"},
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+ {0x69, L"FN 14"},
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+ {0x6a, L"FN 15"},
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+ {0x6b, L"FN 16"},
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+ {0x6c, L"FN 17"},
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+ {0x6d, L"FN 18"},
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+ {0x6e, L"FN 19"},
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+ {0x6f, L"FN 20"},
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+ {0x70, L"FN 21"},
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+ {0x71, L"FN 22"},
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+ {0x72, L"FN 23"},
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+ {0x73, L"FN 24"},
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+ {0x7f, L"Mute"},
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+ {0x80, L"Volume Up"},
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+ {0x81, L"Volume Down"},
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+ {0x100, L"Brightness Up"},
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+ {0x101, L"Brightness Down"},
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+ {0x102, L"Suspend"},
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+ {0x103, L"Hibernate"},
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+ {0x104, L"Toggle Display"},
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+ {0x105, L"Recovery"},
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+ {0x106, L"Reject"},
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+ {0x0, NULL},
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+};
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+
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+/*
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+ * Translate a unicode character to a string.
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+ *
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+ * @code unicode character
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+ * @return string
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+ */
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+static u16 *translate_char(u16 code)
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+{
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+ struct translate *tr;
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+
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+ if (code >= ' ') {
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+ ch[1] = code;
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+ return ch;
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+ }
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+ for (tr = control_characters; tr->text; ++tr) {
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+ if (tr->code == code)
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+ return tr->text;
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+ }
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+ return unknown;
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+}
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+
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+/*
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+ * Translate a scan code to a human readable string.
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+ *
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+ * @code unicode character
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+ * @return string
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+ */
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+static u16 *translate_code(u16 code)
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+{
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+ struct translate *tr;
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+
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+ for (tr = scan_codes; tr->text; ++tr) {
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+ if (tr->code == code)
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+ return tr->text;
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+ }
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+ return unknown;
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+}
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+
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+/*
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+ * Setup unit test.
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+ *
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+ * @handle: handle of the loaded image
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+ * @systable: system table
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+ * @return: EFI_ST_SUCCESS for success
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+ */
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+static int setup(const efi_handle_t handle,
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+ const struct efi_system_table *systable)
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+{
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+ boottime = systable->boottime;
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+
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+ return EFI_ST_SUCCESS;
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+}
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+
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+/*
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+ * Execute unit test.
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+ *
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+ * @return: EFI_ST_SUCCESS for success
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+ */
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+static int execute(void)
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+{
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+ struct efi_input_key input_key = {0};
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+ efi_status_t ret;
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+
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+ efi_st_printf("Waiting for your input\n");
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+ efi_st_printf("To terminate type 'x'\n");
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+
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+ for (;;) {
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+ /* Wait for next key */
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+ do {
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+ ret = con_in->read_key_stroke(con_in, &input_key);
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+ } while (ret == EFI_NOT_READY);
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+
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+ /* Allow 5 minutes until time out */
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+ boottime->set_watchdog_timer(300, 0, 0, NULL);
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+
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+ efi_st_printf("Unicode char %u (%ps), scan code %u (%ps)\n",
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+ (unsigned int)input_key.unicode_char,
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+ translate_char(input_key.unicode_char),
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+ (unsigned int)input_key.scan_code,
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+ translate_code(input_key.scan_code));
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+
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+ switch (input_key.unicode_char) {
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+ case 'x':
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+ case 'X':
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+ return EFI_ST_SUCCESS;
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+ }
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+ }
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+}
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+
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+EFI_UNIT_TEST(textinput) = {
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+ .name = "text input",
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+ .phase = EFI_EXECUTE_BEFORE_BOOTTIME_EXIT,
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+ .setup = setup,
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+ .execute = execute,
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+ .on_request = true,
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+};
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