diff options
| author | Heinrich Schuchardt <xypron.glpk@gmx.de> | 2020-12-13 10:30:24 +0100 |
|---|---|---|
| committer | Heinrich Schuchardt <xypron.glpk@gmx.de> | 2021-01-13 02:38:01 +0100 |
| commit | 94686f60a2b9fd87842f473a5cdca316668765c3 (patch) | |
| tree | 905db732cbefd6c43c31e29d1ed08adc2eeed350 /include/efi_dt_fixup.h | |
| parent | 48618e9b8b2a09486983a60efc7402f5d136f992 (diff) | |
efi_loader: implement EFI_DT_FIXUP_PROTOCOL
A boot manager like GRUB can use the protocol to
* apply U-Boot's fix-ups to the a device-tree
* let U-Boot make memory reservations according to the device-tree
* install the device-tree as a configuration table
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Diffstat (limited to 'include/efi_dt_fixup.h')
| -rw-r--r-- | include/efi_dt_fixup.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/include/efi_dt_fixup.h b/include/efi_dt_fixup.h new file mode 100644 index 0000000000..9066e8dd8e --- /dev/null +++ b/include/efi_dt_fixup.h @@ -0,0 +1,39 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * EFI_DT_FIXUP_PROTOCOL + * + * Copyright (c) 2020 Heinrich Schuchardt + */ + +#include <efi_api.h> + +#define EFI_DT_FIXUP_PROTOCOL_GUID \ + EFI_GUID(0xe617d64c, 0xfe08, 0x46da, 0xf4, 0xdc, \ + 0xbb, 0xd5, 0x87, 0x0c, 0x73, 0x00) + +#define EFI_DT_FIXUP_PROTOCOL_REVISION 0x00010000 + +/* Add nodes and update properties */ +#define EFI_DT_APPLY_FIXUPS 0x00000001 +/* + * Reserve memory according to the /reserved-memory node + * and the memory reservation block + */ +#define EFI_DT_RESERVE_MEMORY 0x00000002 +/* Install the device-tree as configuration table */ +#define EFI_DT_INSTALL_TABLE 0x00000004 + +#define EFI_DT_ALL (EFI_DT_APPLY_FIXUPS | \ + EFI_DT_RESERVE_MEMORY | \ + EFI_DT_INSTALL_TABLE) + +struct efi_dt_fixup_protocol { + u64 revision; + efi_status_t (EFIAPI *fixup) (struct efi_dt_fixup_protocol *this, + void *dtb, + efi_uintn_t *buffer_size, + u32 flags); +}; + +extern struct efi_dt_fixup_protocol efi_dt_fixup_prot; +extern const efi_guid_t efi_guid_dt_fixup_protocol; |