[v3,0/9] target/hppa qemu v8.2 regression fixes

Message

Helge Deller Jan. 12, 2024, 10:29 a.m. UTC

From: Helge Deller <[e-mail]>

There were some regressions introduced with Qemu v8.2 on the hppa/hppa64
target, e.g.:

- 32-bit HP-UX crashes on B160L (32-bit) machine
- NetBSD boot failure due to power button in page zero
- NetBSD FPU detection failure
- OpenBSD 7.4 boot failure

This patch series fixes those known regressions and additionally:

- allows usage of the max. 3840MB of memory (instead of 3GB),
- adds support for the qemu --nodefaults option (to debug other devices)

This patch set will not fix those known (non-regression) bugs:
- HP-UX and NetBSD still fail to boot on the new 64-bit C3700 machine
- Linux kernel will still fail to boot on C3700 as long as kernel modules are used.

The whole series can be pulled from the "hppa-fixes-8.2" branch from:
https://github.com/hdeller/qemu-hppa.git        hppa-fixes-8.2

SeaBIOS v15 has not changed in v3, so it is not included in this
patch review series but will be added in final pull request.

Please review.

Changes v2->v3:
- Added comment about Figures H-10 and H-11 in the parisc2.0 spec
  in patch which calculate PDC address translation if PSW.W=0
- Introduce and use hppa_set_ior_and_isr()
- Use drive_get_max_bus(IF_SCSI), nd_table[] and serial_hd() to check
  if default devices should be created
- Added Tested-by and Reviewed-by tags

Changes v1->v2:
- fix OpenBSD boot with SeaBIOS v15 instead of v14
- commit message enhancements suggested by BALATON Zoltan
- use uint64_t for ram_max in patch #1

Helge Deller (9):
  hw/hppa/machine: Allow up to 3840 MB total memory
  hw/hppa/machine: Disable default devices with --nodefaults option
  hw/pci-host/astro: Add missing astro & elroy registers for NetBSD
  target/hppa: Fix PDC address translation on PA2.0 with PSW.W=0
  hw/hppa: Move software power button address back into PDC
  target/hppa: Avoid accessing %gr0 when raising exception
  target/hppa: Export function hppa_set_ior_and_isr()
  target/hppa: Fix IOR and ISR on unaligned access trap
  target/hppa: Fix IOR and ISR on error in probe

 hw/hppa/machine.c        | 28 +++++++++++++++++-----------
 hw/pci-host/astro.c      | 26 +++++++++++++++++++++++---
 target/hppa/cpu.c        |  6 +-----
 target/hppa/cpu.h        |  1 +
 target/hppa/mem_helper.c | 27 ++++++++++++++-------------
 target/hppa/op_helper.c  |  6 +-----
 6 files changed, 57 insertions(+), 37 deletions(-)