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| author | Ard Biesheuvel <ardb@kernel.org> | 2020-02-19 02:09:48 +0300 |
|---|---|---|
| committer | Ard Biesheuvel <ardb@kernel.org> | 2020-02-22 21:04:57 +0300 |
| commit | e951a1f427f2312e17b4e0f485e60068ca1423bb (patch) | |
| tree | 87e960ab626d1b22bfec7237cb1c71c89a49fa81 /arch/arm/boot/compressed/head.S | |
| parent | c7225494be79f8629c9166b106d6b1febf2a882f (diff) | |
| download | linux-e951a1f427f2312e17b4e0f485e60068ca1423bb.tar.xz | |
efi/arm: Pass start and end addresses to cache_clean_flush()
In preparation for turning the decompressor's cache clean/flush
operations into proper by-VA maintenance for v7 cores, pass the
start and end addresses of the regions that need cache maintenance
into cache_clean_flush in registers r0 and r1.
Currently, all implementations of cache_clean_flush ignore these
values, so no functional change is expected as a result of this
patch.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Diffstat (limited to 'arch/arm/boot/compressed/head.S')
| -rw-r--r-- | arch/arm/boot/compressed/head.S | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S index 39f7071d47c7..8487221bedb0 100644 --- a/arch/arm/boot/compressed/head.S +++ b/arch/arm/boot/compressed/head.S @@ -1460,6 +1460,12 @@ ENTRY(efi_stub_entry) @ Preserve return value of efi_entry() in r4 mov r4, r0 + add r1, r4, #SZ_2M @ DT end + bl cache_clean_flush + + ldr r0, [sp] @ relocated zImage + ldr r1, =_edata @ size of zImage + add r1, r1, r0 @ end of zImage bl cache_clean_flush @ The PE/COFF loader might not have cleaned the code we are |