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a1c5a06224
qemu/include/hw
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Stefan Hajnoczi a1c5a06224 hw/arm: make bitbanded IO optional on ARMv7-M 
Some ARM CPUs have bitbanded IO, a memory region that allows convenient
bit access via 32-bit memory loads/stores.  This eliminates the need for
read-modify-update instruction sequences.

This patch makes this optional feature an ARMv7MState qdev property,
allowing boards to choose whether they want bitbanding or not.

Status of boards:
 * iotkit (Cortex M33), no bitband
 * mps2 (Cortex M3), bitband
 * msf2 (Cortex M3), bitband
 * stellaris (Cortex M3), bitband
 * stm32f205 (Cortex M3), bitband

As a side-effect of this patch, Peter Maydell noted that the Ethernet
controller on mps2 board is now accessible.  Previously they were hidden
by the bitband region (which does not exist on the real board).

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20180814162739.11814-2-stefanha@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-08-16 14:05:28 +01:00
..
acpi hw/tpm: Use the IEC binary prefix definitions 2018-07-02 15:41:13 +02:00
adc
arm hw/arm: make bitbanded IO optional on ARMv7-M 2018-08-16 14:05:28 +01:00
audio hw/audio/wm8750: move WM8750 declarations from i2c/i2c.h to audio/wm8750.h 2018-02-02 08:19:25 +01:00
block block: Remove deprecated -drive option serial 2018-08-15 12:50:39 +02:00
char serial-isa: Use MAX_ISA_SERIAL_PORTS instead of MAX_SERIAL_PORTS 2018-04-26 13:57:00 +01:00
core hw/core/split-irq: Device that splits IRQ lines 2018-03-02 11:03:45 +00:00
cpu hw: remove "qemu/osdep.h" from header files 2017-12-18 17:07:02 +03:00
cris
display hw/display: Use the IEC binary prefix definitions 2018-07-02 15:41:13 +02:00
dma hw: Do not include "exec/address-spaces.h" if it is not necessary 2018-06-01 14:15:10 +02:00
gpio
i2c ppc4xx_i2c: Rewrite to model hardware more closely 2018-07-03 09:56:52 +10:00
i386 i386: do not migrate MSR_SMI_COUNT on machine types <2.12 2018-07-30 14:00:11 +02:00
ide ide: introduce ide_transfer_start_norecurse 2018-06-08 13:36:31 -04:00
input adb: add property to disable direct reg 3 writes 2018-06-16 16:32:33 +10:00
intc intc/arm_gic: Add the virtualization extensions to the GIC state 2018-08-14 17:17:20 +01:00
ipack
ipmi
isa superio: Don't use MAX_SERIAL_PORTS for serial port limit 2018-04-26 13:57:00 +01:00
kvm
lm32
m68k
mem pc-dimm: get_memory_region() will not fail after realize 2018-06-28 19:05:34 +02:00
mips hw/mips: Use the IEC binary prefix definitions 2018-07-02 15:41:16 +02:00
misc i.MX6UL: Add i.MX6UL specific CCM device 2018-08-16 14:05:28 +01:00
net hw/net: Use the IEC binary prefix definitions 2018-07-02 15:41:16 +02:00
nvram Clean up includes 2018-02-09 05:05:11 +01:00
pci allocate pci id for mdpy 2018-05-23 03:14:40 +03:00
pci-bridge Clean up includes 2018-02-09 05:05:11 +01:00
pci-host uninorth: remove token register from uninorth device 2018-06-12 09:33:52 +10:00
ppc ppc patch queue 2018-07-03 2018-07-03 14:59:27 +01:00
riscv hw/riscv/sifive_u: Connect the Cadence GEM Ethernet device 2018-07-05 15:24:25 -07:00
s390x s390x/tcg: properly implement the TOD 2018-07-02 10:37:38 +02:00
scsi Block layer patches: 2018-06-29 18:29:15 +01:00
sd sdcard: Reflect when the Spec v3 is supported in the Config Register (SCR) 2018-06-08 13:15:34 +01:00
sh4 hw: Do not include "exec/address-spaces.h" if it is not necessary 2018-06-01 14:15:10 +02:00
smbios Move include qemu/option.h from qemu-common.h to actual users 2018-02-09 13:52:16 +01:00
sparc sun4u_iommu: update to reflect IOMMU is no longer part of the APB device 2018-01-09 21:48:20 +00:00
ssi xilinx_spips: Make dma transactions as per dma_burst_size 2018-06-26 17:50:39 +01:00
timer aspeed/timer: use the APB frequency from the SCU 2018-06-26 17:50:42 +01:00
tricore
unicore32 hw/unicore32: restrict hw addr defines to source file 2017-12-18 17:07:02 +03:00
usb usb: Add basic code to emulate Chipidea USB IP 2018-02-09 10:40:30 +00:00
vfio vfio: remove DPRINTF() definition from vfio-common.h 2018-06-05 08:23:16 -06:00
virtio virtio-gpu: fix crashes upon warm reboot with vga mode 2018-08-07 15:03:58 +01:00
watchdog
xen compiler: add a sizeof_field() macro 2018-06-27 13:01:40 +01:00
xtensa Clean up includes 2018-02-09 05:05:11 +01:00
boards.h boards.h: Remove doc comment reference to nonexistent function 2018-07-09 14:51:34 +01:00
bt.h
compat.h vga: disable global_vmstate for 3.0+ machine types 2018-07-03 11:19:49 +02:00
devices.h hw: Clean "hw/devices.h" includes 2018-06-01 14:15:10 +02:00
elf_ops.h Add symbol table callback interface to load_elf 2018-03-07 08:30:28 +13:00
empty_slot.h
fw-path-provider.h
hotplug.h qdev: add HotplugHandler->post_plug() callback 2018-07-16 16:58:16 +02:00
hw.h
ide.h
irq.h hw/core/split-irq: Device that splits IRQ lines 2018-03-02 11:03:45 +00:00
loader-fit.h Use #include "..." for our own headers, <...> for others 2018-02-09 05:05:11 +01:00
loader.h loader: Check access size when calling rom_ptr() to avoid crashes 2018-07-02 10:37:38 +02:00
nmi.h
or-irq.h hw/core/or-irq: Support more than 16 inputs to an OR gate 2018-06-15 15:23:34 +01:00
pcmcia.h
platform-bus.h platform-bus-device: use device plug callback instead of machine_done notifier 2018-05-10 18:10:56 +01:00
ptimer.h ptimer: Add TRIGGER_ONLY_ON_DECREMENT policy option 2018-07-09 14:51:34 +01:00
qdev-core.h qdev: Remove DeviceClass::init() and ::exit() 2018-06-01 15:14:31 +02:00
qdev-dma.h
qdev-properties.h net: Remove the deprecated "vlan" parameter 2018-05-14 15:47:14 +08:00
qdev.h
register.h hw: register: Run post_write hook on reset 2018-03-01 11:05:43 +00:00
registerfields.h Use #include "..." for our own headers, <...> for others 2018-02-09 05:05:11 +01:00
stream.h
sysbus.h hw/core/sysbus: Add a function for creating and attaching an object 2018-07-17 13:12:49 +01:00
usb.h usb: Remove legacy -usbdevice options (host, serial, disk and net) 2018-01-26 07:15:08 +01:00