From: Simon Glass <sjg@chromium.org> Checking if a variable is a load option is useful for the app, so move efi_varname_is_load_option() and u16_tohex() into a new helper.c file. Signed-off-by: Simon Glass <sjg@chromium.org> --- lib/efi/Makefile | 1 + lib/efi/helper.c | 42 +++++++++++++++++++++++++++++++++++++ lib/efi_loader/efi_helper.c | 33 ----------------------------- 3 files changed, 43 insertions(+), 33 deletions(-) create mode 100644 lib/efi/helper.c diff --git a/lib/efi/Makefile b/lib/efi/Makefile index 213c9910b39..a31caf1fce9 100644 --- a/lib/efi/Makefile +++ b/lib/efi/Makefile @@ -5,5 +5,6 @@ obj-y += basename.o obj-y += device_path.o +obj-y += helper.o obj-y += memory.o obj-y += run.o diff --git a/lib/efi/helper.c b/lib/efi/helper.c new file mode 100644 index 00000000000..34cf3f49f95 --- /dev/null +++ b/lib/efi/helper.c @@ -0,0 +1,42 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (c) 2020, Linaro Limited + */ + +#define LOG_CATEGORY LOGC_EFI + +#include <string.h> +#include <linux/types.h> + +static int u16_tohex(u16 c) +{ + if (c >= '0' && c <= '9') + return c - '0'; + if (c >= 'A' && c <= 'F') + return c - 'A' + 10; + + /* not hexadecimal */ + return -1; +} + +bool efi_varname_is_load_option(u16 *var_name16, int *index) +{ + int id, i, digit; + + if (memcmp(var_name16, u"Boot", 8)) + return false; + + for (id = 0, i = 0; i < 4; i++) { + digit = u16_tohex(var_name16[4 + i]); + if (digit < 0) + break; + id = (id << 4) + digit; + } + if (i == 4 && !var_name16[8]) { + if (index) + *index = id; + return true; + } + + return false; +} diff --git a/lib/efi_loader/efi_helper.c b/lib/efi_loader/efi_helper.c index 82e0fd7b069..56ea7d1c7d9 100644 --- a/lib/efi_loader/efi_helper.c +++ b/lib/efi_loader/efi_helper.c @@ -241,39 +241,6 @@ int efi_unlink_dev(efi_handle_t handle) return 0; } -static int u16_tohex(u16 c) -{ - if (c >= '0' && c <= '9') - return c - '0'; - if (c >= 'A' && c <= 'F') - return c - 'A' + 10; - - /* not hexadecimal */ - return -1; -} - -bool efi_varname_is_load_option(u16 *var_name16, int *index) -{ - int id, i, digit; - - if (memcmp(var_name16, u"Boot", 8)) - return false; - - for (id = 0, i = 0; i < 4; i++) { - digit = u16_tohex(var_name16[4 + i]); - if (digit < 0) - break; - id = (id << 4) + digit; - } - if (i == 4 && !var_name16[8]) { - if (index) - *index = id; - return true; - } - - return false; -} - /** * efi_next_variable_name() - get next variable name * -- 2.43.0