On 2/18/26 20:48, Anton Johansson via qemu development wrote:
This patchset tries to address a discrepancy between the C3700 machine
in QEMU/SeaBIOS and the documentation (chapter 5)
http://ftp.parisc-linux.org/docs/whitepapers/PA-8700wp.pdf
where 40 bits of physical address space are used in SeaBIOS compared
to the 44 bits specified in the documentation.
A PA-8600 CPU with 40 bits of physical address space is added along with
a C3600 machine using it by default.
As I mentioned earlier, I've now the patches ready for submission
to add a A400 machine. The A400 uses a PA8500 CPU, which has 40bits too.
So, instead of adding the C3600, can we please rebase your patch on my
series instead? I send my series in the the next few minutes...
Thanks!
Helge
AFAICT there are no major
differences from QEMUs side between the PA-8600 and 8700 aside from the
physical address space size. The PA-8700 machine can then be
moved to using 44 bits. To account for the discrepancy with SeaBIOS, the
functional tests now run a C3700 but with a PA-8600 CPU.
CPU model definitions now inherit from a TYPE_HPPA_CPU base class and
use a HPPACPUDef struct to provide model specifics, similar to the SPARC
and RISCV targets. This hopefully makes it easier to add other models,
such as the 8800/8900.
Based on:
[PATCH v6 0/8] single-binary: Drop TARGET_PHYS_ADDR_SPACE_BITS
([email protected])
Signed-off-by: Anton Johansson <[email protected]>
---
Changes in v3:
- Fixed spelling in commit message/comment
- Rebased
- Dropped if statement in hppa_cpu_class_base_init() (patch
"hppa: Introduce HPPACPUDef"). Not needed as it will simply
be set to NULL for the abstract base class anyway.
- Link to v2:
https://lore.kernel.org/qemu-devel/[email protected]
Changes in v2:
- Missed a reference to the old "hppa" CPU model, updated to
"pa-7300lc".
- Link to v1:
https://lore.kernel.org/qemu-devel/[email protected]
---
Anton Johansson (4):
hppa: Prepare for additional CPU models
hppa: Introduce HPPACPUDef
hppa: Get physical address space bits from HPPACPUDef
hppa: Add C3600 machine with PA-8600 CPU
target/hppa/cpu-qom.h | 8 ++++-
target/hppa/cpu.h | 35 +++++++++++++++----
hw/hppa/machine.c | 64 +++++++++++++++++++++++++++--------
hw/pci-host/astro.c | 2 +-
linux-user/hppa/elfload.c | 2 +-
target/hppa/cpu.c | 50 ++++++++++++++++++++-------
target/hppa/mem_helper.c | 40 +++++++---------------
tests/qtest/machine-none-test.c | 2 +-
tests/functional/hppa/test_seabios.py | 3 ++
9 files changed, 141 insertions(+), 65 deletions(-)
