Martin Roth (gaumless@gmail.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/6364
-gerrit
commit 4b28554901d119fc52f5a705021d40168766b2d6 Author: Martin Roth martin.roth@se-eng.com Date: Fri Jul 25 14:39:05 2014 -0600
payloads/external/SeaBIOS: Allow setting buffers below 0xC0000
Add the option to coreboot to set the SeaBIOS buffers below 0xC0000. This is an absolute requirement on the upcoming Intel Rangeley processor because it is designed so that only the processor can write the higher memory areas. This prevents USB 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.
Change-Id: I15638605d1c66a2277d4b852796db89978551a34 Signed-off-by: Martin Roth martin.roth@se-eng.com --- payloads/external/SeaBIOS/Makefile.inc | 3 +++ src/Kconfig | 13 +++++++++++++ src/arch/x86/Makefile.inc | 1 + 3 files changed, 17 insertions(+)
diff --git a/payloads/external/SeaBIOS/Makefile.inc b/payloads/external/SeaBIOS/Makefile.inc index 21f933a..03e2b08 100644 --- a/payloads/external/SeaBIOS/Makefile.inc +++ b/payloads/external/SeaBIOS/Makefile.inc @@ -31,6 +31,9 @@ ifeq ($(CONFIG_CONSOLE_SERIAL),y) else echo "# CONFIG_DEBUG_SERIAL is not set" >> $(OUT)/seabios/.config endif +ifneq ($(CONFIG_SEABIOS_MALLOC_UPPERMEMORY),y) + echo "# CONFIG_MALLOC_UPPERMEMORY is not set" >> $(OUT)/seabios/.config +endif ifneq ($(CONFIG_SEABIOS_THREAD_OPTIONROMS),y) echo "# CONFIG_THREAD_OPTIONROMS is not set" >> $(OUT)/seabios/.config endif diff --git a/src/Kconfig b/src/Kconfig index 693e0e7..eaa1329 100644 --- a/src/Kconfig +++ b/src/Kconfig @@ -636,6 +636,19 @@ config SEABIOS_THREAD_OPTIONROMS variations during option ROM code execution. It is not known if all option ROMs will behave properly with this option.
+config SEABIOS_MALLOC_UPPERMEMORY + bool + default y + depends on PAYLOAD_SEABIOS + help + Use the "Upper Memory Block" area (0xc0000-0xf0000) for internal + "low memory" allocations. If this is not selected, the memory is + instead allocated from the "9-segment" (0x90000-0xa0000). + This is not typically needed, but may be required on some platforms + to allow USB and SATA buffers to be written correctly by the + hardware. In general, if this is desired, the option will be + set to 'N' by the chipset Kconfig. + choice prompt "GRUB2 version" default GRUB2_MASTER diff --git a/src/arch/x86/Makefile.inc b/src/arch/x86/Makefile.inc index 036dc1a..aa058c0 100644 --- a/src/arch/x86/Makefile.inc +++ b/src/arch/x86/Makefile.inc @@ -351,6 +351,7 @@ seabios: CONFIG_SEABIOS_THREAD_OPTIONROMS=$(CONFIG_SEABIOS_THREAD_OPTIONROMS) \ CONFIG_CONSOLE_SERIAL=$(CONFIG_CONSOLE_SERIAL) \ CONFIG_TTYS0_BASE=$(CONFIG_TTYS0_BASE) \ + CONFIG_SEABIOS_MALLOC_UPPERMEMORY=$(CONFIG_SEABIOS_MALLOC_UPPERMEMORY) \ OUT=$(abspath $(obj)) IASL="$(IASL)"
filo: