[U-Boot] [PATCH] ARM: HYP/non-sec: Don't enable ARMV7_LPAE for old sunxi kernels
Old sunxi kernels fail to boot with ARMV7_LPAE enabled.
Signed-off-by: Jonathan Liu net147@gmail.com --- arch/arm/cpu/armv7/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/cpu/armv7/Kconfig b/arch/arm/cpu/armv7/Kconfig index 73d57a2aae..cdb7e402b4 100644 --- a/arch/arm/cpu/armv7/Kconfig +++ b/arch/arm/cpu/armv7/Kconfig @@ -53,7 +53,7 @@ config ARMV7_PSCI_NR_CPUS config ARMV7_LPAE bool "Use LPAE page table format" if EXPERT depends on CPU_V7A - default y if ARMV7_VIRT + default y if ARMV7_VIRT && !OLD_SUNXI_KERNEL_COMPAT ---help--- Say Y here to use the long descriptor page table format. This is required if U-Boot runs in HYP mode.
On Tue, Mar 19, 2019 at 11:09 AM Jonathan Liu net147@gmail.com wrote:
Old sunxi kernels fail to boot with ARMV7_LPAE enabled.
Any idea why? I don't have relevant stuff with to test this.
Hi Jagan,
On Fri., 22 Mar. 2019 at 4:05 am, Jagan Teki jagan@amarulasolutions.com wrote:
On Tue, Mar 19, 2019 at 11:09 AM Jonathan Liu net147@gmail.com wrote:
Old sunxi kernels fail to boot with ARMV7_LPAE enabled.
Any idea why? I don't have relevant stuff with to test this.
I don't know why. It failed to boot linux-sunxi 3.4.104 kernel on A20 OLinuXino-MICRO after updating from 2018.07 to 2018.09-rc1 and would hang at "Starting kernel...".
I bisected the issue to: https://git.denx.de/?p=u-boot.git;a=commit;h=d32e86bde8a31a49cf4a9b233ad91ec...
No problems booting mainline kernel.
Thanks.
Regards, Jonathan
On Fri, Mar 22, 2019 at 2:31 AM Jonathan Liu net147@gmail.com wrote:
Hi Jagan,
On Fri., 22 Mar. 2019 at 4:05 am, Jagan Teki jagan@amarulasolutions.com wrote:
On Tue, Mar 19, 2019 at 11:09 AM Jonathan Liu net147@gmail.com wrote:
Old sunxi kernels fail to boot with ARMV7_LPAE enabled.
Any idea why? I don't have relevant stuff with to test this.
I don't know why. It failed to boot linux-sunxi 3.4.104 kernel on A20 OLinuXino-MICRO after updating from 2018.07 to 2018.09-rc1 and would hang at "Starting kernel...".
I bisected the issue to: https://git.denx.de/?p=u-boot.git;a=commit;h=d32e86bde8a31a49cf4a9b233ad91ec...
No problems booting mainline kernel.
Can you update full details of bug on the commit message.
From: Jagan Teki jagan@amarulasolutions.com Date: Fri, 12 Apr 2019 12:02:06 +0530
On Fri, Mar 22, 2019 at 2:31 AM Jonathan Liu net147@gmail.com wrote:
Hi Jagan,
On Fri., 22 Mar. 2019 at 4:05 am, Jagan Teki jagan@amarulasolutions.com wrote:
On Tue, Mar 19, 2019 at 11:09 AM Jonathan Liu net147@gmail.com wrote:
Old sunxi kernels fail to boot with ARMV7_LPAE enabled.
Any idea why? I don't have relevant stuff with to test this.
I don't know why. It failed to boot linux-sunxi 3.4.104 kernel on A20 OLinuXino-MICRO after updating from 2018.07 to 2018.09-rc1 and would hang at "Starting kernel...".
I bisected the issue to: https://git.denx.de/?p=u-boot.git;a=commit;h=d32e86bde8a31a49cf4a9b233ad91ec...
No problems booting mainline kernel.
Can you update full details of bug on the commit message.
Technically I think the right thing to do would be disabling ARMV7_VIRT as my understanding is that booting into HYP mode doesn't work without LPAE support.
Mark Kettenis wrote on 04/12/2019 03:03 PM:
From: Jagan Teki jagan@amarulasolutions.com Date: Fri, 12 Apr 2019 12:02:06 +0530
On Fri, Mar 22, 2019 at 2:31 AM Jonathan Liu net147@gmail.com wrote:
Hi Jagan,
On Fri., 22 Mar. 2019 at 4:05 am, Jagan Teki jagan@amarulasolutions.com wrote:
On Tue, Mar 19, 2019 at 11:09 AM Jonathan Liu net147@gmail.com wrote:
Old sunxi kernels fail to boot with ARMV7_LPAE enabled.
Any idea why? I don't have relevant stuff with to test this.
I don't know why. It failed to boot linux-sunxi 3.4.104 kernel on A20 OLinuXino-MICRO after updating from 2018.07 to 2018.09-rc1 and would hang at "Starting kernel...".
I bisected the issue to: https://git.denx.de/?p=u-boot.git;a=commit;h=d32e86bde8a31a49cf4a9b233ad91ec...
No problems booting mainline kernel.
Can you update full details of bug on the commit message.
Technically I think the right thing to do would be disabling ARMV7_VIRT as my understanding is that booting into HYP mode doesn't work without LPAE support.
Some days ago I tried to disable HYP mode for SVC mode. But with SVC the PSCI is not loading (u-boot bug?), and without PSCI only the 1st core of the CPU gets used. I had documented the case here: https://lists.denx.de/pipermail/u-boot/2019-April/364192.html
participants (4)
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Jagan Teki -
Jonathan Liu -
Mark Kettenis -
U.Mutlu