16KB PAGE_SIZE not work on DB410C

[Ard Biesheuvel]

On 21 December 2015 at 05:00, Pingbo Wen <pingbo.wen at linaro.org> wrote:
> Hello,
>
> I want to do some tests over 16KB page size on dragonboard 410c. And I merged
> arm64-upstream branch over
>
>   https://git.linaro.org/landing-teams/working/qualcomm/kernel.git integration-linux-qcomlt
>
> which is based on Linux Kernel 4.3.
>
> The db410c can boot into ubuntu in 4KB / 64KB page size, but when I set 16K page size, with
> 47bit VA, the kernel hang before kernel_start(), no log output.
>
> Does db410c support 16K page size? What can I do to boot it up?
>

Cortex-A5x does not support 16 KB page size

-- 
Ard.


> Below is what I got through serial port:
>
> B -    437888 - QSEE Execution, Start
> D -        61 - QSEE Execution, Delta
> B -    443561 - SBL1, End
> D -    245982 - SBL1, Delta
> S - Flash Throughput, 111000 KB/s  (1151760 Bytes,  10309 us)
> S - DDR Frequency, 400 MHz
> Android Bootloader - UART_DM Initialized!!!
> [0] welcome to lk
>
> [10] platform_init()
> [10] target_init()
> [40] SDHC Running in HS200 mode
> [90] Done initialization of the card
> [90] pm8x41_get_is_cold_boot: cold boot
> [90] No 'frp' partition found
> [100] Not able to search the panel:
> [100] Display not enabled for 24 HW type
> [100] Target panel init not found!
> [110] pm8x41_get_is_cold_boot: cold boot
> [110] partition misc doesn't exist
> [110] error in emmc_recovery_init
> [120] Unable to locate /bootselect partition
> [120] No 'misc' partition found
> [120] Error reading MISC partition
> [130] failed to get ffbm cookie[130] use_signed_kernel=0, is_unlocked=0, is_tampered=0.
> [140] Loading boot image (15704064): start
> [240] Loading boot image (15704064): done
> [350] DTB Total entry: 15, DTB version: 2
> [360] Using DTB entry 0x000000f7/00000000/0x00010018/0 for device 0x000000f7/00010000/0x00010018/0
> [370] Using pmic info 0x2000b/0x0/0x0/0x0 for device 0x2000b/0x0/0x0/0x0
> [370] target_display_panel_node:510: hw_id=24 panel_name=""
> [380] cmdline: root=/dev/disk/by-partlabel/rootfs rw rootwait console=tty0 console=ttyMSM0,115200n8 earlycon=msm_serial androidboot.emmc=true androidboot.serialno=a4ce2318 androidboot.baseband=apq mdss_mdp.panel=0:dsi:0:
> [400] Updating device tree: start
> [490] Updating device tree: done
> [500] booting linux @ 0x80080000, ramdisk @ 0x82000000 (2854016), tags/device tree @ 0x81e00000
> [500] Jumping to kernel via monitor
>
> Pingbo
>
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