From: Ard Biesheuvel <[email protected]>

Before proceeding with relocating the kernel and parsing the command line,
insert a call to check_platform_features() to allow an arch specific check
to be performed whether the current kernel can execute on the current
hardware.

Reviewed-by: Jeremy Linton <[email protected]>
Tested-by: Suzuki K Poulose <[email protected]>
Signed-off-by: Ard Biesheuvel <[email protected]>
Acked-by: Mark Rutland <[email protected]>
Signed-off-by: Matt Fleming <[email protected]>
---
 drivers/firmware/efi/libstub/arm-stub.c | 4 ++++
 drivers/firmware/efi/libstub/efistub.h  | 2 ++
 2 files changed, 6 insertions(+)

diff --git a/drivers/firmware/efi/libstub/arm-stub.c 
b/drivers/firmware/efi/libstub/arm-stub.c
index 3397902e4040..6086a874fa3c 100644
--- a/drivers/firmware/efi/libstub/arm-stub.c
+++ b/drivers/firmware/efi/libstub/arm-stub.c
@@ -190,6 +190,10 @@ unsigned long efi_entry(void *handle, efi_system_table_t 
*sys_table,
 
        pr_efi(sys_table, "Booting Linux Kernel...\n");
 
+       status = check_platform_features(sys_table);
+       if (status != EFI_SUCCESS)
+               goto fail;
+
        /*
         * Get a handle to the loaded image protocol.  This is used to get
         * information about the running image, such as size and the command
diff --git a/drivers/firmware/efi/libstub/efistub.h 
b/drivers/firmware/efi/libstub/efistub.h
index 86ff7bfa6ace..981c6035ce09 100644
--- a/drivers/firmware/efi/libstub/efistub.h
+++ b/drivers/firmware/efi/libstub/efistub.h
@@ -53,4 +53,6 @@ void efi_get_virtmap(efi_memory_desc_t *memory_map, unsigned 
long map_size,
                     unsigned long desc_size, efi_memory_desc_t *runtime_map,
                     int *count);
 
+efi_status_t check_platform_features(efi_system_table_t *sys_table_arg);
+
 #endif
-- 
2.6.2

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