diff options
| author | Martin Roth <martin.roth@se-eng.com> | 2014-07-25 14:39:05 -0600 |
|---|---|---|
| committer | Martin Roth <gaumless@gmail.com> | 2014-09-12 23:16:29 +0200 |
| commit | 4d7d25f38abac4bcd3ea88a50b5f529f1e9ddb44 (patch) | |
| tree | 51c2447343e840d5b24008d07f2ad231a20f2c9e /src/Kconfig | |
| parent | b3997ba6f2ba26e0dfa851caed98f030ac25ffd0 (diff) | |
payloads/external/SeaBIOS: Allow setting buffers below 0xC0000
Add the option to coreboot to set the SeaBIOS buffers below 0xC0000.
This is a requirement on the Intel Rangeley processor
because it is designed so that only the processor can write
the higher memory areas. This prevents USB and SATA from bus-mastering
into the buffers when they're set in the typical 0xE0000 area.
This will be set to Y unless defaulted to N by the mainboard or
chipset.
Push the SeaBIOS buffers down to 0x90000 segment for Mohon Peak
Change-Id: I15638605d1c66a2277d4b852796db89978551a34
Signed-off-by: Martin Roth <martin.roth@se-eng.com>
Reviewed-on: http://review.coreboot.org/6364
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Diffstat (limited to 'src/Kconfig')
| -rw-r--r-- | src/Kconfig | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/Kconfig b/src/Kconfig index 97a479919e..443732a73c 100644 --- a/src/Kconfig +++ b/src/Kconfig @@ -623,6 +623,19 @@ config SEABIOS_THREAD_OPTIONROMS variations during option ROM code execution. It is not known if all option ROMs will behave properly with this option. +config SEABIOS_MALLOC_UPPERMEMORY + bool + default y + depends on PAYLOAD_SEABIOS + help + Use the "Upper Memory Block" area (0xc0000-0xf0000) for internal + "low memory" allocations. If this is not selected, the memory is + instead allocated from the "9-segment" (0x90000-0xa0000). + This is not typically needed, but may be required on some platforms + to allow USB and SATA buffers to be written correctly by the + hardware. In general, if this is desired, the option will be + set to 'N' by the chipset Kconfig. + choice prompt "GRUB2 version" default GRUB2_MASTER |