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Daniel Bertalan f802ff1e28 hw/arm/bcm2835_property: Implement "get command line" message 
This query copies the kernel command line into the message buffer. It
was previously stubbed out to return empty, this commit makes it reflect
the arguments specified with `-append`.

I observed the following peculiarities on my Pi 3B+:
- If the buffer is shorter than the string, the response header gives
  the full length, but no data is actually copied.
- No NUL terminator is added: even if the buffer is long enough to fit
  one, the buffer's original contents are preserved past the string's
  end.
- The VC firmware adds the following extra parameters beside the
  user-supplied ones (via /boot/cmdline.txt): `video`, `vc_mem.mem_base`
  and `vc_mem.mem_size`. This is currently not implemented in qemu.

Signed-off-by: Daniel Bertalan <dani@danielbertalan.dev>
Message-id: 20230425103250.56653-1-dani@danielbertalan.dev
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[PMM: added comment about NUL and short-buffer behaviour]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-05-02 15:47:40 +01:00
..
9pfs hw: replace most qemu_bh_new calls with qemu_bh_new_guarded 2023-04-28 11:31:54 +02:00
acpi hw/pci-bridge: Make PCIe and CXL PXB Devices inherit from TYPE_PXB_DEV 2023-04-24 22:56:55 -04:00
adc hw/adc: Make adci[*] R/W in NPCM7XX ADC 2022-07-18 13:20:14 +01:00
alpha Drop duplicate #include 2023-02-08 07:28:05 +01:00
arm hw/arm/bcm2835_property: Implement "get command line" message 2023-05-02 15:47:40 +01:00
audio hw/audio/via-ac97: Basic implementation of audio playback 2023-03-08 00:37:48 +01:00
avr
block hw: replace most qemu_bh_new calls with qemu_bh_new_guarded 2023-04-28 11:31:54 +02:00
char hw: replace most qemu_bh_new calls with qemu_bh_new_guarded 2023-04-28 11:31:54 +02:00
core multifd: Create property multifd-flush-after-each-section 2023-04-27 16:37:28 +02:00
cpu hw/cpu: Mark arm11 and realview mpcore as target-independent code 2023-01-16 17:51:20 +01:00
cris
cxl hw/pci-bridge: Make PCIe and CXL PXB Devices inherit from TYPE_PXB_DEV 2023-04-24 22:56:55 -04:00
display hw: replace most qemu_bh_new calls with qemu_bh_new_guarded 2023-04-28 11:31:54 +02:00
dma replace TABs with spaces 2023-03-20 12:43:50 +01:00
gpio replace TABs with spaces 2023-03-20 12:43:50 +01:00
hppa hw/isa: Rename isa_bus_irqs() -> isa_bus_register_input_irqs() 2023-02-27 22:29:02 +01:00
hyperv win32: replace closesocket() with close() wrapper 2023-03-13 15:39:31 +04:00
i2c hw/i2c/allwinner-i2c: Fix subclassing of TYPE_AW_I2C_SUN6I 2023-04-11 14:13:29 +01:00
i386 intel_iommu: refine iotlb hash calculation 2023-04-24 22:56:55 -04:00
ide hw: replace most qemu_bh_new calls with qemu_bh_new_guarded 2023-04-28 11:31:54 +02:00
input replace TABs with spaces 2023-03-20 12:43:50 +01:00
intc apic: disable reentrancy detection for apic-msi 2023-04-28 11:31:54 +02:00
ipack include/hw/pci: Split pci_device.h off pci.h 2023-01-08 01:54:22 -05:00
ipmi include/hw/pci: Split pci_device.h off pci.h 2023-01-08 01:54:22 -05:00
isa virtio,pc,pci: features, fixes 2023-03-10 14:31:37 +00:00
loongarch hw/loongarch/virt: Fix virt_to_phys_addr function 2023-04-04 19:29:13 +08:00
m68k hw: Add compat machines for 8.1 2023-04-21 04:25:52 -04:00
mem virtio-balloon: optimize the virtio-balloon on the ARM platform 2023-04-21 04:25:52 -04:00
microblaze hw/char/xilinx_uartlite: Open-code xilinx_uartlite_create() 2023-02-27 13:27:05 +00:00
mips hw/mips/itu: Pass SAAR using QOM link property 2023-03-08 00:37:48 +01:00
misc hw/arm/bcm2835_property: Implement "get command line" message 2023-05-02 15:47:40 +01:00
net hw/net: npcm7xx_emc: set MAC in register space 2023-05-02 15:47:39 +01:00
nios2 hw/nios2: set machine->fdt in nios2_load_dtb() 2022-10-17 16:15:10 -03:00
nubus hw/nubus/nubus-device: Fix memory leak in nubus_device_realize 2023-02-27 22:29:01 +01:00
nvme hw: replace most qemu_bh_new calls with qemu_bh_new_guarded 2023-04-28 11:31:54 +02:00
nvram aspeed queue: 2023-03-03 17:11:22 +00:00
openrisc *: Add missing includes of qemu/error-report.h 2023-03-22 15:06:57 +00:00
pci pci: avoid accessing slot_reserved_mask directly outside of pci.c 2023-04-21 04:25:52 -04:00
pci-bridge hw/pci-bridge: Make PCIe and CXL PXB Devices inherit from TYPE_PXB_DEV 2023-04-24 22:56:55 -04:00
pci-host raven: disable reentrancy detection for iomem 2023-04-28 11:31:54 +02:00
pcmcia
ppc thread-pool: avoid passing the pool parameter every time 2023-04-25 13:17:28 +02:00
rdma hw/rdma: VMW_PVRDMA should depend on VMXNET3_PCI 2023-04-28 08:05:37 +02:00
remote Drop duplicate #include 2023-02-08 07:28:05 +01:00
riscv *: Add missing includes of qemu/error-report.h 2023-03-22 15:06:57 +00:00
rtc replace TABs with spaces 2023-03-20 12:43:50 +01:00
rx rx: re-randomize rng-seed on reboot 2022-10-27 11:34:31 +01:00
s390x hw: Add compat machines for 8.1 2023-04-21 04:25:52 -04:00
scsi lsi53c895a: disable reentrancy detection for script RAM 2023-04-28 11:31:54 +02:00
sd replace TABs with spaces 2023-03-20 12:43:50 +01:00
sensor Do not include hw/hw.h if it is not necessary 2023-02-27 09:15:38 +01:00
sh4 hw/ide/mmio: Extract TYPE_MMIO_IDE declarations to 'hw/ide/mmio.h' 2023-02-27 22:29:02 +01:00
smbios hw/smbios: fix field corruption in type 4 table 2023-03-02 03:10:46 -05:00
sparc
sparc64 pci: avoid accessing slot_reserved_mask directly outside of pci.c 2023-04-21 04:25:52 -04:00
ssi hw/ssi: Fix Linux driver init issue with xilinx_spi 2023-04-03 16:12:30 +01:00
timer hw/timer/imx_epit: fix limit check 2023-04-20 10:21:14 +01:00
tpm tpm: Add support for TPM device over I2C bus 2023-04-20 08:17:15 -04:00
tricore
usb hw: replace most qemu_bh_new calls with qemu_bh_new_guarded 2023-04-28 11:31:54 +02:00
vfio *: Add missing includes of qemu/error-report.h 2023-03-22 15:06:57 +00:00
virtio hw: replace most qemu_bh_new calls with qemu_bh_new_guarded 2023-04-28 11:31:54 +02:00
watchdog hw/watchdog: Allwinner WDT emulation for system reset 2023-04-20 10:21:13 +01:00
xen pci: avoid accessing slot_reserved_mask directly outside of pci.c 2023-04-21 04:25:52 -04:00
xenpv hw/xenpv: Initialize Xen backend operations 2023-03-24 14:52:14 +00:00
xtensa
Kconfig xen: add CONFIG_XEN_BUS and CONFIG_XEN_EMU options for Xen emulation 2023-03-01 08:22:49 +00:00
meson.build