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| author | Evgeny Zinoviev <me@ch1p.com> | 2020-03-20 02:57:00 +0300 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2021-02-09 07:47:41 +0000 |
| commit | d2b3961fdc951f2dbbec22c7dce68fc0337112cc (patch) | |
| tree | 4a849a94f9975806b361dfc3b7b7e3596159b212 /Documentation/ifdtool | |
| parent | 7ac6ae95ca50335152fb2d979ca97f799fb07d4d (diff) | |
| download | coreboot-d2b3961fdc951f2dbbec22c7dce68fc0337112cc.tar.xz | |
Documentation: Use correct KiB/MiB units instead of KB/MB
Fix a common mistake of using KB/MB where KiB/MiB is what actually is meant.
1 MB = (10^3)^2 = 1000000
1 MiB = (2^10)^2 = 1048576
Change-Id: I78327652b6c6526318071a9d4bafd7ec279ea614
Signed-off-by: Evgeny Zinoviev <me@ch1p.io>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39685
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'Documentation/ifdtool')
| -rw-r--r-- | Documentation/ifdtool/layout.md | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/Documentation/ifdtool/layout.md b/Documentation/ifdtool/layout.md index 2513929db9..77319b840e 100644 --- a/Documentation/ifdtool/layout.md +++ b/Documentation/ifdtool/layout.md @@ -19,7 +19,7 @@ way to categorize anything required by the SoC but not provided by coreboot. | IFD Region | IFD Region name | FMAP Name | Notes | | index | | | | +============+==================+===========+===========================================+ -| 0 | Flash Descriptor | SI_DESC | Always the top 4KB of flash | +| 0 | Flash Descriptor | SI_DESC | Always the top 4 KiB of flash | +------------+------------------+-----------+-------------------------------------------+ | 1 | BIOS | SI_BIOS | This is the region that contains coreboot | +------------+------------------+-----------+-------------------------------------------+ @@ -40,9 +40,9 @@ way to categorize anything required by the SoC but not provided by coreboot. The ifdtool can be used to manipulate a firmware image with a IFD. This tool will not take into account the FMAP while modifying the image which can lead to unexpected and hard to debug issues with the firmware image. For example if the -ME region is defined at 6 MB in the IFD but the FMAP only allocates 4 MB for the -ME, then when the ME is added by the ifdtool 6 MB will be written which could -overwrite 2 MB of the BIOS. +ME region is defined at 6 MiB in the IFD but the FMAP only allocates 4 MiB for +the ME, then when the ME is added by the ifdtool 6 MiB will be written which +could overwrite 2 MiB of the BIOS. In order to validate that the FMAP and the IFD are compatible the ifdtool provides --validate (-t) option. `ifdtool -t` will read both the IFD and the @@ -75,4 +75,4 @@ Region mismatch between pd and SI_PDR FMAP area SI_PDR: offset: 0x007fc000 length: 0x00004000 -```
\ No newline at end of file +``` |