diff options
Diffstat (limited to 'src/boot/efi')
| -rw-r--r-- | src/boot/efi/util.c | 61 | ||||
| -rw-r--r-- | src/boot/efi/util.h | 4 |
2 files changed, 65 insertions, 0 deletions
diff --git a/src/boot/efi/util.c b/src/boot/efi/util.c index dea4872158..50ad757565 100644 --- a/src/boot/efi/util.c +++ b/src/boot/efi/util.c @@ -97,6 +97,32 @@ EFI_STATUS efivar_set_uint_string(const EFI_GUID *vendor, CHAR16 *name, UINTN i, return efivar_set(vendor, name, str, persistent); } +EFI_STATUS efivar_set_uint32_le(const EFI_GUID *vendor, CHAR16 *name, UINT32 value, BOOLEAN persistent) { + UINT8 buf[4]; + + buf[0] = (UINT8)(value >> 0U & 0xFF); + buf[1] = (UINT8)(value >> 8U & 0xFF); + buf[2] = (UINT8)(value >> 16U & 0xFF); + buf[3] = (UINT8)(value >> 24U & 0xFF); + + return efivar_set_raw(vendor, name, buf, sizeof(buf), persistent); +} + +EFI_STATUS efivar_set_uint64_le(const EFI_GUID *vendor, CHAR16 *name, UINT64 value, BOOLEAN persistent) { + UINT8 buf[8]; + + buf[0] = (UINT8)(value >> 0U & 0xFF); + buf[1] = (UINT8)(value >> 8U & 0xFF); + buf[2] = (UINT8)(value >> 16U & 0xFF); + buf[3] = (UINT8)(value >> 24U & 0xFF); + buf[4] = (UINT8)(value >> 32U & 0xFF); + buf[5] = (UINT8)(value >> 40U & 0xFF); + buf[6] = (UINT8)(value >> 48U & 0xFF); + buf[7] = (UINT8)(value >> 56U & 0xFF); + + return efivar_set_raw(vendor, name, buf, sizeof(buf), persistent); +} + EFI_STATUS efivar_get(const EFI_GUID *vendor, const CHAR16 *name, CHAR16 **value) { _cleanup_freepool_ CHAR8 *buf = NULL; EFI_STATUS err; @@ -143,6 +169,41 @@ EFI_STATUS efivar_get_uint_string(const EFI_GUID *vendor, const CHAR16 *name, UI return err; } +EFI_STATUS efivar_get_uint32_le(const EFI_GUID *vendor, const CHAR16 *name, UINT32 *ret) { + _cleanup_freepool_ CHAR8 *buf = NULL; + UINTN size; + EFI_STATUS err; + + err = efivar_get_raw(vendor, name, &buf, &size); + if (!EFI_ERROR(err) && ret) { + if (size != sizeof(UINT32)) + return EFI_BUFFER_TOO_SMALL; + + *ret = (UINT32) buf[0] << 0U | (UINT32) buf[1] << 8U | (UINT32) buf[2] << 16U | + (UINT32) buf[3] << 24U; + } + + return err; +} + +EFI_STATUS efivar_get_uint64_le(const EFI_GUID *vendor, const CHAR16 *name, UINT64 *ret) { + _cleanup_freepool_ CHAR8 *buf = NULL; + UINTN size; + EFI_STATUS err; + + err = efivar_get_raw(vendor, name, &buf, &size); + if (!EFI_ERROR(err) && ret) { + if (size != sizeof(UINT64)) + return EFI_BUFFER_TOO_SMALL; + + *ret = (UINT64) buf[0] << 0U | (UINT64) buf[1] << 8U | (UINT64) buf[2] << 16U | + (UINT64) buf[3] << 24U | (UINT64) buf[4] << 32U | (UINT64) buf[5] << 40U | + (UINT64) buf[6] << 48U | (UINT64) buf[7] << 56U; + } + + return err; +} + EFI_STATUS efivar_get_raw(const EFI_GUID *vendor, const CHAR16 *name, CHAR8 **buffer, UINTN *size) { _cleanup_freepool_ CHAR8 *buf = NULL; UINTN l; diff --git a/src/boot/efi/util.h b/src/boot/efi/util.h index f0e9610629..313d6697d2 100644 --- a/src/boot/efi/util.h +++ b/src/boot/efi/util.h @@ -24,11 +24,15 @@ UINT64 time_usec(void); EFI_STATUS efivar_set(const EFI_GUID *vendor, const CHAR16 *name, const CHAR16 *value, BOOLEAN persistent); EFI_STATUS efivar_set_raw(const EFI_GUID *vendor, const CHAR16 *name, const VOID *buf, UINTN size, BOOLEAN persistent); EFI_STATUS efivar_set_uint_string(const EFI_GUID *vendor, CHAR16 *name, UINTN i, BOOLEAN persistent); +EFI_STATUS efivar_set_uint32_le(const EFI_GUID *vendor, CHAR16 *NAME, UINT32 value, BOOLEAN persistent); +EFI_STATUS efivar_set_uint64_le(const EFI_GUID *vendor, CHAR16 *name, UINT64 value, BOOLEAN persistent); VOID efivar_set_time_usec(const EFI_GUID *vendor, CHAR16 *name, UINT64 usec); EFI_STATUS efivar_get(const EFI_GUID *vendor, const CHAR16 *name, CHAR16 **value); EFI_STATUS efivar_get_raw(const EFI_GUID *vendor, const CHAR16 *name, CHAR8 **buffer, UINTN *size); EFI_STATUS efivar_get_uint_string(const EFI_GUID *vendor, const CHAR16 *name, UINTN *i); +EFI_STATUS efivar_get_uint32_le(const EFI_GUID *vendor, const CHAR16 *name, UINT32 *ret); +EFI_STATUS efivar_get_uint64_le(const EFI_GUID *vendor, const CHAR16 *name, UINT64 *ret); EFI_STATUS efivar_get_boolean_u8(const EFI_GUID *vendor, const CHAR16 *name, BOOLEAN *ret); CHAR8 *strchra(CHAR8 *s, CHAR8 c); |