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| author | Simon Glass <sjg@chromium.org> | 2018-09-14 04:57:10 -0600 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2018-09-28 11:09:01 -0600 |
| commit | 35b384cbe5d40e618391cc076409e89cedf9c863 (patch) | |
| tree | 1b2c8ede314a19e9d645ed9043ad0020a1c334ef /tools/binman/README.entries | |
| parent | 0b489364f90d5cd70b594268442b14e0143c89b5 (diff) | |
binman: Add x86 support for starting TPL
Sometimes we want to include TPL for x86 platforms, such as when we want
to select between different SPL images (e.g. for Chrome OS verified boot).
Add support for this.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'tools/binman/README.entries')
| -rw-r--r-- | tools/binman/README.entries | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/tools/binman/README.entries b/tools/binman/README.entries index 041e77771ed..31bc725d577 100644 --- a/tools/binman/README.entries +++ b/tools/binman/README.entries @@ -586,3 +586,20 @@ For 32-bit U-Boot, the 'x86_start16' entry type is used instead. +Entry: x86-start16-tpl: x86 16-bit start-up code for TPL +-------------------------------------------------------- + +Properties / Entry arguments: + - filename: Filename of tpl/u-boot-x86-16bit-tpl.bin (default + 'tpl/u-boot-x86-16bit-tpl.bin') + +x86 CPUs start up in 16-bit mode, even if they are 64-bit CPUs. This code +must be placed at a particular address. This entry holds that code. It is +typically placed at offset CONFIG_SYS_X86_START16. The code is responsible +for changing to 32-bit mode and starting TPL, which in turn jumps to SPL. + +If TPL is not being used, the 'x86_start16_spl or 'x86_start16' entry types +may be used instead. + + + |