[Qemu-devel] [Bug 1734474] [NEW] Maemo does not boot on emulated N800

[Qemu-devel] [Bug 1734474] [NEW] Maemo does not boot on emulated N800

[MVoloshin]

Public bug reported:

I start QEMU with qemu-system-arm-m 130 -M n800 -kernel zImage.1 -mtdblock maemo.img -append "root=/dev/mtdblock3 rootfstype=jffs2"
On QEMU 1.2.0 see "NOKIA" logo and then desktop appears, but on 1.5.0 and newer (including latest versions) I see only white screen and no signs of life. Was this caused by regression or any syntax change?

** Affects: qemu
     Importance: Undecided
         Status: New


** Tags: arm maemo n800 nokia qemu

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Title:
  Maemo does not boot on emulated N800

Status in QEMU:
  New

Bug description:
  I start QEMU with qemu-system-arm-m 130 -M n800 -kernel zImage.1 -mtdblock maemo.img -append "root=/dev/mtdblock3 rootfstype=jffs2"
  On QEMU 1.2.0 see "NOKIA" logo and then desktop appears, but on 1.5.0 and newer (including latest versions) I see only white screen and no signs of life. Was this caused by regression or any syntax change?

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[Qemu-devel] [Bug 1734474] Re: Maemo does not boot on emulated N800

[MVoloshin]

UPD: Maemo will boot on the second attempt if I reset the emulator
manually.

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Title:
  Maemo does not boot on emulated N800

Status in QEMU:
  New

Bug description:
  I start QEMU with qemu-system-arm-m 130 -M n800 -kernel zImage.1 -mtdblock maemo.img -append "root=/dev/mtdblock3 rootfstype=jffs2"
  On QEMU 1.2.0 see "NOKIA" logo and then desktop appears, but on 1.5.0 and newer (including latest versions) I see only white screen and no signs of life. Was this caused by regression or any syntax change?

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[Qemu-devel] [Bug 1734474] Re: Maemo does not boot on emulated N800

[Peter Maydell]

That's a regression, but unfortunately the n800 boards aren't really
maintained (I don't have any test images to hand, and the hardware is
long-gone these days). You could try a git bisect to see what commit
broke, if you want to investigate.

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Title:
  Maemo does not boot on emulated N800

Status in QEMU:
  New

Bug description:
  I start QEMU with qemu-system-arm-m 130 -M n800 -kernel zImage.1 -mtdblock maemo.img -append "root=/dev/mtdblock3 rootfstype=jffs2"
  On QEMU 1.2.0 see "NOKIA" logo and then desktop appears, but on 1.5.0 and newer (including latest versions) I see only white screen and no signs of life. Was this caused by regression or any syntax change?

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[Bug 1734474] Re: Maemo does not boot on emulated N800

[Peter Maydell]

Oops, I should have asked for the image to reproduce with back in 2017
when this bug was first filed :-(  I don't suppose you still have it ?

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Title:
  Maemo does not boot on emulated N800

Status in QEMU:
  New

Bug description:
  I start QEMU with qemu-system-arm-m 130 -M n800 -kernel zImage.1 -mtdblock maemo.img -append "root=/dev/mtdblock3 rootfstype=jffs2"
  On QEMU 1.2.0 see "NOKIA" logo and then desktop appears, but on 1.5.0 and newer (including latest versions) I see only white screen and no signs of life. Was this caused by regression or any syntax change?

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[Bug 1734474] Re: Maemo does not boot on emulated N800

[MVoloshin]

It's available here: https://4pda.ru/forum/index.php?showtopic=870847

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Title:
  Maemo does not boot on emulated N800

Status in QEMU:
  New

Bug description:
  I start QEMU with qemu-system-arm-m 130 -M n800 -kernel zImage.1 -mtdblock maemo.img -append "root=/dev/mtdblock3 rootfstype=jffs2"
  On QEMU 1.2.0 see "NOKIA" logo and then desktop appears, but on 1.5.0 and newer (including latest versions) I see only white screen and no signs of life. Was this caused by regression or any syntax change?

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[Bug 1734474] Re: Maemo does not boot on emulated N800

[Peter Maydell]

Thanks. I can confirm that there's been a regression since 1.2.0 that's
still not fixed in master.


** Changed in: qemu
       Status: New => Confirmed

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Title:
  Maemo does not boot on emulated N800

Status in QEMU:
  Confirmed

Bug description:
  I start QEMU with qemu-system-arm-m 130 -M n800 -kernel zImage.1 -mtdblock maemo.img -append "root=/dev/mtdblock3 rootfstype=jffs2"
  On QEMU 1.2.0 see "NOKIA" logo and then desktop appears, but on 1.5.0 and newer (including latest versions) I see only white screen and no signs of life. Was this caused by regression or any syntax change?

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[Bug 1734474] Re: Maemo does not boot on emulated N800

[Peter Maydell]

Bisection thinks commit cb5ef3fa1871522a08 is the cause.

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Title:
  Maemo does not boot on emulated N800

Status in QEMU:
  Confirmed

Bug description:
  I start QEMU with qemu-system-arm-m 130 -M n800 -kernel zImage.1 -mtdblock maemo.img -append "root=/dev/mtdblock3 rootfstype=jffs2"
  On QEMU 1.2.0 see "NOKIA" logo and then desktop appears, but on 1.5.0 and newer (including latest versions) I see only white screen and no signs of life. Was this caused by regression or any syntax change?

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[Bug 1734474] Re: Maemo does not boot on emulated N800

[Peter Maydell]

This change on current head-of-git, which is effectively just reverting the logic-change part of commit cb5ef3fa1871522a08, is sufficient to allow the n800 image to boot again. 
But that commit was trying to fix a bug, so we probably need to look more carefully at the logic rather than just reverting it...

diff --git a/hw/misc/tmp105.c b/hw/misc/tmp105.c
index b47120492a..1813477268 100644
--- a/hw/misc/tmp105.c
+++ b/hw/misc/tmp105.c
@@ -161,14 +161,12 @@ static int tmp105_tx(I2CSlave *i2c, uint8_t data)
 {
     TMP105State *s = TMP105(i2c);
 
-    if (s->len == 0) {
+    if (!s->len++) {
         s->pointer = data;
-        s->len++;
     } else {
         if (s->len <= 2) {
             s->buf[s->len - 1] = data;
         }
-        s->len++;
         tmp105_write(s);
     }

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Title:
  Maemo does not boot on emulated N800

Status in QEMU:
  Confirmed

Bug description:
  I start QEMU with qemu-system-arm-m 130 -M n800 -kernel zImage.1 -mtdblock maemo.img -append "root=/dev/mtdblock3 rootfstype=jffs2"
  On QEMU 1.2.0 see "NOKIA" logo and then desktop appears, but on 1.5.0 and newer (including latest versions) I see only white screen and no signs of life. Was this caused by regression or any syntax change?

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[Bug 1734474] Re: Maemo does not boot on emulated N800

[Peter Maydell]

Should be fixed by this patch series:
https://patchew.org/QEMU/20201110150023.25533-1-peter.maydell@linaro.org/

Commit cb5ef3fa1871522a08 is correct -- it just exposed an underlying
bug in the TMP105 temperature sensor device.


** Changed in: qemu
       Status: Confirmed => In Progress

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Title:
  Maemo does not boot on emulated N800

Status in QEMU:
  In Progress

Bug description:
  I start QEMU with qemu-system-arm-m 130 -M n800 -kernel zImage.1 -mtdblock maemo.img -append "root=/dev/mtdblock3 rootfstype=jffs2"
  On QEMU 1.2.0 see "NOKIA" logo and then desktop appears, but on 1.5.0 and newer (including latest versions) I see only white screen and no signs of life. Was this caused by regression or any syntax change?

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[Bug 1734474] Re: Maemo does not boot on emulated N800

[Thomas Huth]

** Tags removed: qemu

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Title:
  Maemo does not boot on emulated N800

Status in QEMU:
  In Progress

Bug description:
  I start QEMU with qemu-system-arm-m 130 -M n800 -kernel zImage.1 -mtdblock maemo.img -append "root=/dev/mtdblock3 rootfstype=jffs2"
  On QEMU 1.2.0 see "NOKIA" logo and then desktop appears, but on 1.5.0 and newer (including latest versions) I see only white screen and no signs of life. Was this caused by regression or any syntax change?

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[Bug 1734474] Re: Maemo does not boot on emulated N800

[Philippe Mathieu-Daudé]

Fixed in v5.2.0?
ab135622cf4 ("tmp105: Correct handling of temperature limit checks")
e1919889ef7 ("hw/misc/tmp105: reset the T_low and T_High registers")

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Title:
  Maemo does not boot on emulated N800

Status in QEMU:
  In Progress

Bug description:
  I start QEMU with qemu-system-arm-m 130 -M n800 -kernel zImage.1 -mtdblock maemo.img -append "root=/dev/mtdblock3 rootfstype=jffs2"
  On QEMU 1.2.0 see "NOKIA" logo and then desktop appears, but on 1.5.0 and newer (including latest versions) I see only white screen and no signs of life. Was this caused by regression or any syntax change?

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[Bug 1734474] Re: Maemo does not boot on emulated N800

[Thomas Huth]

Yes, I think we can close this now.

** Changed in: qemu
       Status: In Progress => Fix Released

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Title:
  Maemo does not boot on emulated N800

Status in QEMU:
  Fix Released

Bug description:
  I start QEMU with qemu-system-arm-m 130 -M n800 -kernel zImage.1 -mtdblock maemo.img -append "root=/dev/mtdblock3 rootfstype=jffs2"
  On QEMU 1.2.0 see "NOKIA" logo and then desktop appears, but on 1.5.0 and newer (including latest versions) I see only white screen and no signs of life. Was this caused by regression or any syntax change?

To manage notifications about this bug go to:
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