From: David Gibson <david@gibson.dropbear.id.au>
To: agraf@suse.de, peter.maydell@linaro.org, armbru@redhat.com,
lcapitulino@redhat.com
Cc: lvivier@redhat.com, thuth@redhat.com, mst@redhat.com,
qemu-devel@nongnu.org, qemu-ppc@nongnu.org,
peter.crosthwaite@xilinx.com, afaerber@suse.de,
David Gibson <david@gibson.dropbear.id.au>
Subject: [Qemu-devel] [PATCHv2 0/4] Start allowing ISA to be configured out
Date: Thu, 2 Jul 2015 15:53:43 +1000 [thread overview]
Message-ID: <1435816427-9426-1-git-send-email-david@gibson.dropbear.id.au> (raw)
At the moment isa-bus.c is compiled unconditionally for all targets.
However, some targets have never used legacy ISA devices. Many more
targets have at least some machine types without ISA.
These patches allow ISA bus to be disabled in the configuration, thus
allowing cut down configurations for targets and machine types that
don't have ISA.
Actually turning off ISA will require more than this for most targets
- there are a number of non-obvious dependencies on the ISA code.
b19c1c0 "isa: remove isa_mem_base variable" already got rid of an
important one (VGA depended on ISA). Patches 2/4 and 4/4 in this
series remove some more. There are a number more though, for example
CONFIG_IDE_CORE depends on ISA and the HMP "info irq" command depends
on I8259 code.
This patch should allow easier experimentation so we can chip away at
those dependencies on legacy code in the future.
Changes in v2:
* Removed changes to HMP, since it would cause a regression for PReP
* Added a cleanup of the dead CONFIG_ISA_MMIO variable
* Clearer explanation of the situation in commit messages
David Gibson (4):
Cleanup leftover CONFIG_ISA_MMIO
Split serial-isa into its own config option
Allow ISA bus to be configured out
Split ISA and sysbus versions of m48t59 device
default-configs/alpha-softmmu.mak | 1 +
default-configs/arm-softmmu.mak | 2 +-
default-configs/i386-softmmu.mak | 1 +
default-configs/mips-softmmu.mak | 1 +
default-configs/mips64-softmmu.mak | 1 +
default-configs/mips64el-softmmu.mak | 1 +
default-configs/mipsel-softmmu.mak | 1 +
default-configs/moxie-softmmu.mak | 1 +
default-configs/pci.mak | 1 +
default-configs/ppc-softmmu.mak | 2 +-
default-configs/ppc64-softmmu.mak | 2 +-
default-configs/ppcemb-softmmu.mak | 1 +
default-configs/sh4-softmmu.mak | 1 +
default-configs/sh4eb-softmmu.mak | 1 +
default-configs/sparc-softmmu.mak | 1 +
default-configs/sparc64-softmmu.mak | 2 +-
default-configs/unicore32-softmmu.mak | 1 +
default-configs/x86_64-softmmu.mak | 1 +
hw/char/Makefile.objs | 3 +-
hw/isa/Makefile.objs | 2 +-
hw/timer/Makefile.objs | 3 +
hw/timer/m48t59-internal.h | 82 ++++++++++++
hw/timer/m48t59-isa.c | 180 +++++++++++++++++++++++++++
hw/timer/m48t59.c | 228 +++-------------------------------
24 files changed, 304 insertions(+), 216 deletions(-)
create mode 100644 hw/timer/m48t59-internal.h
create mode 100644 hw/timer/m48t59-isa.c
--
2.4.3
next reply other threads:[~2015-07-02 5:53 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-02 5:53 David Gibson [this message]
2015-07-02 5:53 ` [Qemu-devel] [PATCHv2 1/4] Cleanup leftover CONFIG_ISA_MMIO David Gibson
2015-07-02 8:06 ` Peter Maydell
2015-07-02 5:53 ` [Qemu-devel] [PATCHv2 2/4] Split serial-isa into its own config option David Gibson
2015-07-02 5:53 ` [Qemu-devel] [PATCHv2 3/4] Allow ISA bus to be configured out David Gibson
2015-07-02 8:45 ` Michael S. Tsirkin
2015-07-02 5:53 ` [Qemu-devel] [PATCHv2 4/4] Split ISA and sysbus versions of m48t59 device David Gibson
2015-07-02 6:19 ` [Qemu-devel] [PATCHv2 0/4] Start allowing ISA to be configured out Michael S. Tsirkin
2015-07-02 8:47 ` Michael S. Tsirkin
2015-07-04 23:36 ` [Qemu-devel] [Qemu-ppc] " Benjamin Herrenschmidt
2015-07-05 9:59 ` David Gibson
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