linux-armv7/linux-armv7-rc and CONFIG_ARM_LPAE

Discussion about U-Boot and the kernel.

linux-armv7/linux-armv7-rc and CONFIG_ARM_LPAE

Postby haagch » Sun Jan 22, 2017 9:13 am

The linux-armv7-rc kernel from the repository works fine on my chromebook, but only 2 of the 4 Gigabyte Ram are visible. With LPAE enabled, all 4 Gigabyte would be usable.

I've been told that not all CPUs with armv7 support LPAE, so it can't be enabled by default in this kernel. One solution would be to just make a new package linux-armv7-rc-lpae with it enabled.

The config changes we originally tried it with are here: https://github.com/sctincman/PKGBUILDs/ ... 2441bde724
it also enables
CONFIG_ARM_PV_FIXUP=y
CONFIG_ARCH_PHYS_ADDR_T_64BIT=y
CONFIG_ARCH_DMA_ADDR_T_64BIT=y
CONFIG_PCI_BUS_ADDR_T_64BIT=y
CONFIG_PHYS_ADDR_T_64BIT=y
CONFIG_ZONE_DMA_FLAG=1
That sounds related, not sure if all of those are also required.
haagch
 
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Re: linux-armv7/linux-armv7-rc and CONFIG_ARM_LPAE

Postby mrala » Tue Feb 21, 2017 9:54 pm

Please I'm OK even with 2gigs , just tell where to get it and how to boot it off USB or SD.
mrala
 
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