mirrors/qemu
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
a1c5a06224
qemu/hw/arm
History
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
..
allwinner-a10.c hw/arm/allwinner-a10: Fix introspection problem with 'allwinner-a10' 2018-07-17 13:12:49 +01:00
armv7m.c hw/arm: make bitbanded IO optional on ARMv7-M 2018-08-16 14:05:28 +01:00
aspeed_soc.c aspeed/timer: use the APB frequency from the SCU 2018-06-26 17:50:42 +01:00
aspeed.c aspeed: add the pc9552 chips to the witherspoon machine 2018-06-08 13:15:32 +01:00
bcm2835_peripherals.c Change references to serial_hds[] to serial_hd() 2018-04-26 13:57:00 +01:00
bcm2836.c hw/arm/bcm2836: Fix crash with device_add bcm2837 on unsupported machines 2018-07-17 13:12:49 +01:00
boot.c arm: Fix return code of arm_load_elf 2018-08-14 17:17:21 +01:00
collie.c hw: Do not include "sysemu/block-backend.h" if it is not necessary 2018-06-01 14:15:10 +02:00
cubieboard.c
digic_boards.c
digic.c Change references to serial_hds[] to serial_hd() 2018-04-26 13:57:00 +01:00
exynos4_boards.c
exynos4210.c Remove unnecessary variables for function return value 2018-05-20 08:48:13 +03:00
fsl-imx6.c hw/arm/fsl-imx6: Fix introspection problems with the "fsl, imx6" device 2018-07-17 13:12:49 +01:00
fsl-imx6ul.c i.MX6UL: Add i.MX6UL SOC 2018-08-16 14:05:28 +01:00
fsl-imx7.c hw/arm/fsl-imx7: Fix introspection problems with the "fsl, imx7" device 2018-07-17 13:12:49 +01:00
fsl-imx25.c hw/arm/fsl-imx25: Fix introspection problem with the "fsl, imx25" device 2018-07-17 13:12:49 +01:00
fsl-imx31.c hw/arm/fsl-imx31: Fix introspection problem with the "fsl, imx31" device 2018-07-17 13:12:49 +01:00
gumstix.c hw: Do not include "sysemu/block-backend.h" if it is not necessary 2018-06-01 14:15:10 +02:00
highbank.c Change references to serial_hds[] to serial_hd() 2018-04-26 13:57:00 +01:00
imx25_pdk.c
integratorcp.c Change references to serial_hds[] to serial_hd() 2018-04-26 13:57:00 +01:00
iotkit.c hw/arm/iotkit: Fix IRQ number for timer1 2018-07-30 14:51:40 +01:00
kzm.c Change references to serial_hds[] to serial_hd() 2018-04-26 13:57:00 +01:00
mainstone.c hw: Do not include "sysemu/block-backend.h" if it is not necessary 2018-06-01 14:15:10 +02:00
Makefile.objs i.MX6UL: Add Freescale i.MX6 UltraLite 14x14 EVK Board 2018-08-16 14:05:28 +01:00
mcimx6ul-evk.c i.MX6UL: Add Freescale i.MX6 UltraLite 14x14 EVK Board 2018-08-16 14:05:28 +01:00
mcimx7d-sabre.c i.mx7d: Remove unused header files 2018-06-29 15:11:16 +01:00
mps2-tz.c hw/arm/mps2-tz.c: Instantiate MPCs 2018-06-22 13:28:41 +01:00
mps2.c hw/arm: make bitbanded IO optional on ARMv7-M 2018-08-16 14:05:28 +01:00
msf2-soc.c hw/arm: make bitbanded IO optional on ARMv7-M 2018-08-16 14:05:28 +01:00
msf2-som.c hw: Directly use "qemu/units.h" instead of "qemu/cutils.h" 2018-07-02 15:41:12 +02:00
musicpal.c Change references to serial_hds[] to serial_hd() 2018-04-26 13:57:00 +01:00
netduino2.c
nseries.c hw: Do not include "sysemu/block-backend.h" if it is not necessary 2018-06-01 14:15:10 +02:00
omap1.c hw/arm/omap1: Use qemu_log_mask(GUEST_ERROR) instead of fprintf 2018-06-26 17:50:40 +01:00
omap2.c hw: Do not include "sysemu/blockdev.h" if it is not necessary 2018-06-01 14:15:10 +02:00
omap_sx1.c hw: Do not include "sysemu/block-backend.h" if it is not necessary 2018-06-01 14:15:10 +02:00
palm.c
pxa2xx_gpio.c
pxa2xx_pic.c
pxa2xx.c hw: Do not include "sysemu/block-backend.h" if it is not necessary 2018-06-01 14:15:10 +02:00
raspi.c
realview.c Change references to serial_hds[] to serial_hd() 2018-04-26 13:57:00 +01:00
sabrelite.c
smmu-common.c hw/arm/smmu-common: Fix devfn computation in smmu_iommu_mr 2018-07-09 14:51:34 +01:00
smmu-internal.h hw/arm/smmu-common: VMSAv8-64 page table walk 2018-05-04 18:05:51 +01:00
smmuv3-internal.h hw/arm/smmuv3: Fix translate error handling 2018-06-26 17:50:42 +01:00
smmuv3.c arm/smmuv3: Fix missing VMSD terminator 2018-07-30 14:45:54 +01:00
spitz.c hw/arm/spitz: Move problematic nand_init() code to realize function 2018-07-23 15:21:26 +01:00
stellaris.c hw/arm: make bitbanded IO optional on ARMv7-M 2018-08-16 14:05:28 +01:00
stm32f205_soc.c hw/arm: make bitbanded IO optional on ARMv7-M 2018-08-16 14:05:28 +01:00
strongarm.c Change references to serial_hds[] to serial_hd() 2018-04-26 13:57:00 +01:00
strongarm.h
sysbus-fdt.c hw/arm/sysbus-fdt: Fix assertion in copy_properties_from_host() 2018-07-30 14:47:32 +01:00
tosa.c
trace-events hw/arm/smmuv3: Add notifications on invalidation 2018-06-26 17:50:42 +01:00
versatilepb.c hw: Do not include "sysemu/block-backend.h" if it is not necessary 2018-06-01 14:15:10 +02:00
vexpress.c hw: Do not include "sysemu/block-backend.h" if it is not necessary 2018-06-01 14:15:10 +02:00
virt-acpi-build.c arm/virt: Add support for GICv2 virtualization extensions 2018-08-14 17:17:21 +01:00
virt.c arm/virt: Add support for GICv2 virtualization extensions 2018-08-14 17:17:21 +01:00
xilinx_zynq.c hw: Do not include "sysemu/block-backend.h" if it is not necessary 2018-06-01 14:15:10 +02:00
xlnx-zcu102.c xlnx-zynqmp: Swap Cortex-R5 for Cortex-R5F 2018-06-22 13:28:38 +01:00
xlnx-zynqmp.c xlnx-zynqmp: Improve GIC wiring and MMIO mapping 2018-08-14 17:17:21 +01:00
z2.c hw: Do not include "sysemu/block-backend.h" if it is not necessary 2018-06-01 14:15:10 +02:00