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author | AKASHI Takahiro <takahiro.akashi@linaro.org> | 2020-10-29 13:47:46 +0900 |
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committer | Heinrich Schuchardt <xypron.glpk@gmx.de> | 2020-10-30 14:27:43 +0100 |
commit | 077153e085b48e7683552667ab2247c991c1e1ff (patch) | |
tree | d6954162b528b1932ee31c22878fe0b954e2aec5 /lib | |
parent | c57c9439548a58a0c1f0eb2ec7b5ab5d7b7fd801 (diff) | |
download | u-boot-077153e085b48e7683552667ab2247c991c1e1ff.zip u-boot-077153e085b48e7683552667ab2247c991c1e1ff.tar.gz u-boot-077153e085b48e7683552667ab2247c991c1e1ff.tar.bz2 |
efi_loader: add efi_create_indexed_name()
This function will be used from several places in UEFI subsystem
to generate some specific form of utf-16 variable name.
For example, L"Capsule0001"
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Move function to separate module.
Use char * as argument instead of u16 *.
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Diffstat (limited to 'lib')
-rw-r--r-- | lib/efi_loader/Makefile | 1 | ||||
-rw-r--r-- | lib/efi_loader/efi_string.c | 36 |
2 files changed, 37 insertions, 0 deletions
diff --git a/lib/efi_loader/Makefile b/lib/efi_loader/Makefile index 9bad1d1..8892fb0 100644 --- a/lib/efi_loader/Makefile +++ b/lib/efi_loader/Makefile @@ -34,6 +34,7 @@ obj-y += efi_memory.o obj-y += efi_root_node.o obj-y += efi_runtime.o obj-y += efi_setup.o +obj-y += efi_string.o obj-$(CONFIG_EFI_UNICODE_COLLATION_PROTOCOL2) += efi_unicode_collation.o obj-y += efi_var_common.o obj-y += efi_var_mem.o diff --git a/lib/efi_loader/efi_string.c b/lib/efi_loader/efi_string.c new file mode 100644 index 0000000..3de721f --- /dev/null +++ b/lib/efi_loader/efi_string.c @@ -0,0 +1,36 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * String functions + * + * Copyright (c) 2020 AKASHI Takahiro, Linaro Limited + */ + +#include <common.h> +#include <charset.h> + +/** + * efi_create_indexed_name - create a string name with an index + * @buffer: Buffer + * @name: Name string + * @index: Index + * + * Create a utf-16 string with @name, appending @index. + * For example, L"Capsule0001" + * + * The caller must ensure that the buffer has enough space for the resulting + * string including the trailing L'\0'. + * + * Return: A pointer to the next position after the created string + * in @buffer, or NULL otherwise + */ +u16 *efi_create_indexed_name(u16 *buffer, const char *name, unsigned int index) +{ + u16 *p = buffer; + char index_buf[5]; + + utf8_utf16_strcpy(&p, name); + sprintf(index_buf, "%04X", index); + utf8_utf16_strcpy(&p, index_buf); + + return p; +} |