diff options
author | Hung-Te Lin <hungte@chromium.org> | 2018-06-26 13:42:04 +0800 |
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committer | Patrick Georgi <pgeorgi@google.com> | 2018-07-26 11:34:05 +0000 |
commit | 03e9cb9b35a33f29d3fb0039960237eaea2f7ce6 (patch) | |
tree | 06b6ff31159aff1da9e9938441a2aa17fe060eff /src/soc/mediatek/mt8183/decompressor.c | |
parent | 4c067c85507c786a661642c10583c71b80a9855c (diff) | |
download | coreboot-03e9cb9b35a33f29d3fb0039960237eaea2f7ce6.tar.xz |
mediatek/mt8183: Enable bootblock self-decompression
MT8183 only allows booting from eMMC, so we have to do eMMC emulation
from an external source, for example EC, which makes the size of
bootblock very important.
A fully functional bootblock (that can boot into verstage or romstage)
is about 38000 bytes. If self decompression (CONFIG_COMPRESS_BOOTBLOCK)
is enabled, only 25088 (66%) bytes are needed.
Inspired from crosreview.com/1070018.
BUG=b:80501386
TEST=manually flashed into kukui and boots into romstage.
Change-Id: I7a739866a4ea3bcafe2ff7b9e88d5ed00f3f3e40
Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-on: https://review.coreboot.org/27599
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Diffstat (limited to 'src/soc/mediatek/mt8183/decompressor.c')
-rw-r--r-- | src/soc/mediatek/mt8183/decompressor.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/soc/mediatek/mt8183/decompressor.c b/src/soc/mediatek/mt8183/decompressor.c new file mode 100644 index 0000000000..d4a55b36c1 --- /dev/null +++ b/src/soc/mediatek/mt8183/decompressor.c @@ -0,0 +1,22 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2018 Google Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <bootblock_common.h> +#include <soc/mmu_operations.h> + +void decompressor_soc_init(void) +{ + mtk_mmu_init(); +} |