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| author | Bin Meng <bmeng.cn@gmail.com> | 2016-05-11 07:44:59 -0700 |
|---|---|---|
| committer | Bin Meng <bmeng.cn@gmail.com> | 2016-05-23 15:18:00 +0800 |
| commit | 789b6dceccbb852b0be235334b713467f88e2f8e (patch) | |
| tree | 2a8f7906144a677809b2613b5093c98d68e59f49 /arch/x86/Kconfig | |
| parent | 548344912f791ff7f7f932afdaf669f45a20448b (diff) | |
| download | u-boot-789b6dceccbb852b0be235334b713467f88e2f8e.tar.gz u-boot-789b6dceccbb852b0be235334b713467f88e2f8e.tar.bz2 u-boot-789b6dceccbb852b0be235334b713467f88e2f8e.zip | |
x86: Prepare configuration tables in dedicated high memory region
Currently when CONFIG_SEABIOS is on, U-Boot allocates configuration
tables via normal malloc(). To simplify, use a dedicated memory
region which is reserved on the stack before relocation for this
purpose. Add functions for reserve and malloc.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'arch/x86/Kconfig')
| -rw-r--r-- | arch/x86/Kconfig | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 9d0f502161..2ba36b790c 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -531,6 +531,20 @@ config SEABIOS Check http://www.seabios.org/SeaBIOS for details. +config HIGH_TABLE_SIZE + hex "Size of configuration tables which reside in high memory" + default 0x10000 + depends on SEABIOS + help + SeaBIOS itself resides in E seg and F seg, where U-Boot puts all + configuration tables like PIRQ/MP/ACPI. To avoid conflicts, U-Boot + puts a copy of configuration tables in high memory region which + is reserved on the stack before relocation. The region size is + determined by this option. + + Increse it if the default size does not fit the board's needs. + This is most likely due to a large ACPI DSDT table is used. + source "arch/x86/lib/efi/Kconfig" endmenu |