diff options
| author | Matthew Garrett <matthewgarrett@google.com> | 2019-06-07 13:51:46 -0700 |
|---|---|---|
| committer | Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> | 2019-06-24 23:57:49 +0300 |
| commit | 82d736ac56d7cd78696c5234853684bad05efadf (patch) | |
| tree | 2e5b20a4133bb208c43519874482facebe36b29f /drivers/firmware/efi/libstub/fdt.c | |
| parent | db4d8cb9c9f2af71c4d087817160d866ed572cc9 (diff) | |
Abstract out support for locating an EFI config table
We want to grab a pointer to the TPM final events table, so abstract out
the existing code for finding an FDT table and make it generic.
Signed-off-by: Matthew Garrett <mjg59@google.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Diffstat (limited to 'drivers/firmware/efi/libstub/fdt.c')
| -rw-r--r-- | drivers/firmware/efi/libstub/fdt.c | 27 |
1 files changed, 9 insertions, 18 deletions
diff --git a/drivers/firmware/efi/libstub/fdt.c b/drivers/firmware/efi/libstub/fdt.c index 5440ba17a1c5..0bf0190917e0 100644 --- a/drivers/firmware/efi/libstub/fdt.c +++ b/drivers/firmware/efi/libstub/fdt.c @@ -363,26 +363,17 @@ fail: void *get_fdt(efi_system_table_t *sys_table, unsigned long *fdt_size) { - efi_guid_t fdt_guid = DEVICE_TREE_GUID; - efi_config_table_t *tables; - int i; + void *fdt; - tables = (efi_config_table_t *)sys_table->tables; + fdt = get_efi_config_table(sys_table, DEVICE_TREE_GUID); - for (i = 0; i < sys_table->nr_tables; i++) { - void *fdt; + if (!fdt) + return NULL; - if (efi_guidcmp(tables[i].guid, fdt_guid) != 0) - continue; - - fdt = (void *)tables[i].table; - if (fdt_check_header(fdt) != 0) { - pr_efi_err(sys_table, "Invalid header detected on UEFI supplied FDT, ignoring ...\n"); - return NULL; - } - *fdt_size = fdt_totalsize(fdt); - return fdt; + if (fdt_check_header(fdt) != 0) { + pr_efi_err(sys_table, "Invalid header detected on UEFI supplied FDT, ignoring ...\n"); + return NULL; } - - return NULL; + *fdt_size = fdt_totalsize(fdt); + return fdt; } |