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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
..
macio hw: replace most qemu_bh_new calls with qemu_bh_new_guarded 2023-04-28 11:31:54 +02:00
a9scu.c hw/misc/a9scu: Report unimplemented accesses with qemu_log_mask(UNIMP) 2020-09-14 14:23:19 +01:00
allwinner-a10-ccm.c hw/misc: Allwinner-A10 Clock Controller Module Emulation 2023-01-12 16:50:19 +00:00
allwinner-a10-dramc.c hw/misc: Allwinner A10 DRAM Controller Emulation 2023-01-12 16:50:19 +00:00
allwinner-cpucfg.c hw/arm/allwinner: add CPU Configuration module 2020-03-12 16:27:33 +00:00
allwinner-h3-ccu.c
allwinner-h3-dramc.c hw/misc/allwinner-h3-dramc: enforce 64-bit multiply when calculating row mirror address 2020-03-30 13:18:58 +01:00
allwinner-h3-sysctrl.c hw/arm/allwinner-h3: add System Control module 2020-03-12 16:27:33 +00:00
allwinner-sid.c qdev: Move softmmu properties to qdev-properties-system.h 2020-12-18 15:20:17 -05:00
applesmc.c Do not include "qemu/error-report.h" in headers that do not need it 2023-02-14 09:11:27 +01:00
arm11scu.c
arm_integrator_debug.c arm: Update infocenter.arm.com URLs 2021-02-11 11:50:14 +00:00
arm_l2x0.c Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
arm_sysctl.c Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
armsse-cpu-pwrctrl.c hw/misc/sse-cpu-pwrctrl: Implement SSE-300 CPU<N>_PWRCTRL register block 2021-03-08 17:20:02 +00:00
armsse-cpuid.c hw/arm/mps2: Update old infocenter.arm.com URLs 2021-03-08 11:54:16 +00:00
armsse-mhu.c hw/arm/mps2: Update old infocenter.arm.com URLs 2021-03-08 11:54:16 +00:00
armv7m_ras.c arm: Move M-profile RAS register block into its own device 2021-09-01 11:08:18 +01:00
aspeed_hace.c hw/misc/aspeed_hace: Do not crash if address_space_map() failed 2023-02-07 09:02:05 +01:00
aspeed_i3c.c hw/misc/aspeed_i3c.c: Introduce a dummy AST2600 I3C model. 2022-01-20 11:47:53 +00:00
aspeed_lpc.c hw/misc: Model KCS devices in the Aspeed LPC controller 2021-03-09 12:01:28 +01:00
aspeed_peci.c hw/misc/aspeed: Add PECI controller 2022-06-30 09:21:14 +02:00
aspeed_sbc.c aspeed: sbc: Allow per-machine settings 2022-07-14 16:24:38 +02:00
aspeed_scu.c aspeed/scu: Add trace events for read ops 2022-06-30 09:21:13 +02:00
aspeed_sdmc.c aspeed/sdmc: Drop unnecessary scu include 2023-02-07 09:02:05 +01:00
aspeed_xdma.c hw/misc/aspeed_xdma: Add AST2600 support 2021-05-01 10:03:52 +02:00
auxbus.c bulk: Rename TARGET_FMT_plx -> HWADDR_FMT_plx 2023-01-18 11:14:34 +01:00
avr_power.c hw/misc: avr: Add limited support for power reduction device 2020-07-11 11:02:05 +02:00
axp209.c hw/misc: AXP209 PMU Emulation 2023-01-12 16:50:19 +00:00
bcm2835_cprman.c clock: Add ClockEvent parameter to callbacks 2021-03-08 17:20:01 +00:00
bcm2835_mbox.c Mark remaining global TypeInfo instances as const 2022-02-21 13:30:20 +00:00
bcm2835_mphi.c raspi: add BCM2835 SOC MPHI emulation 2020-06-05 17:23:09 +01:00
bcm2835_powermgt.c Mark remaining global TypeInfo instances as const 2022-02-21 13:30:20 +00:00
bcm2835_property.c hw/arm/bcm2835_property: Implement "get command line" message 2023-05-02 15:47:40 +01:00
bcm2835_rng.c Mark remaining global TypeInfo instances as const 2022-02-21 13:30:20 +00:00
bcm2835_thermal.c
cbus.c Drop useless casts from g_malloc() & friends to pointer 2022-10-22 23:15:40 +02:00
debugexit.c Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
eccmemctl.c Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
edu.c edu: add smp_mb__after_rmw() 2023-03-07 12:38:40 +01:00
empty_slot.c Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
exynos4210_clk.c Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
exynos4210_pmu.c Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
exynos4210_rng.c Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
grlib_ahb_apb_pnp.c hw/misc/grlib_ahb_apb_pnp: Support 8 and 16 bit accesses 2022-08-08 23:43:11 +02:00
i2c-echo.c hw/misc: add a toy i2c echo device 2023-03-02 13:57:50 +01:00
imx6_ccm.c hw/msic: imx6_ccm: Correct register value for silicon type 2021-01-08 15:13:39 +00:00
imx6_src.c hw/misc: Move some arm-related files from specific_ss into softmmu_ss 2022-12-15 17:37:47 +00:00
imx6ul_ccm.c i.MX6UL: Add a specific GPT timer instance for the i.MX6UL 2023-01-05 15:02:08 +00:00
imx7_ccm.c i.MX7D: Compute clock frequency for the fixed frequency clocks. 2023-01-05 15:01:11 +00:00
imx7_gpr.c
imx7_snvs.c hw: Do not include qemu/log.h if it is not necessary 2021-05-02 17:24:50 +02:00
imx25_ccm.c i.MX25: Fix bad printf format specifiers 2020-12-10 11:44:55 +00:00
imx31_ccm.c i.MX31: Fix bad printf format specifiers 2020-12-10 11:44:55 +00:00
imx_ccm.c hw: Do not include qemu/log.h if it is not necessary 2021-05-02 17:24:50 +02:00
imx_rngc.c hw: replace most qemu_bh_new calls with qemu_bh_new_guarded 2023-04-28 11:31:54 +02:00
iotkit-secctl.c misc: fix commonly doubled up words 2022-08-01 11:58:02 +02:00
iotkit-sysctl.c hw/misc: Move some arm-related files from specific_ss into softmmu_ss 2022-12-15 17:37:47 +00:00
iotkit-sysinfo.c hw/misc/iotkit-sysinfo.c: Implement SYS_CONFIG1 and IIDR 2021-03-08 17:20:01 +00:00
ivshmem.c bulk: Rename TARGET_FMT_plx -> HWADDR_FMT_plx 2023-01-18 11:14:34 +01:00
Kconfig hw/misc/sga: Remove the deprecated "sga" device 2023-02-14 09:02:42 +01:00
lasi.c lasi: fix RTC migration 2023-04-20 11:17:35 +02:00
led.c hw: Do not include hw/irq.h if it is not necessary 2021-05-02 17:24:50 +02:00
mac_via.c hw/misc: Convert TYPE_MOS6522 subclasses to 3-phase reset 2022-12-16 15:56:55 +00:00
mchp_pfsoc_dmc.c hw: Remove superfluous includes of hw/hw.h 2021-05-02 17:24:50 +02:00
mchp_pfsoc_ioscb.c hw/{misc, riscv}: pfsoc: add system controller as unimplemented 2023-01-06 10:42:55 +10:00
mchp_pfsoc_sysreg.c hw/{misc, riscv}: pfsoc: add system controller as unimplemented 2023-01-06 10:42:55 +10:00
meson.build hw/misc: add a toy i2c echo device 2023-03-02 13:57:50 +01:00
mips_cmgcr.c hw/mips: Declare all length properties as unsigned 2023-03-08 00:37:48 +01:00
mips_cpc.c hw/mips: Fix Lesser GPL version number 2020-11-03 16:51:13 +01:00
mips_itu.c hw/mips/itu: Pass SAAR using QOM link property 2023-03-08 00:37:48 +01:00
mos6522.c input/adb: Only include header where needed 2023-02-06 11:41:39 +00:00
mps2-fpgaio.c hw/misc/mps2-fpgaio: Support AN547 DBGCTRL register 2021-03-08 17:20:03 +00:00
mps2-scc.c hw/misc/mps2-scc: Support using CFG0 bit 0 for remapping 2021-05-10 17:21:54 +01:00
msf2-sysreg.c
mst_fpga.c bulk: Rename TARGET_FMT_plx -> HWADDR_FMT_plx 2023-01-18 11:14:34 +01:00
npcm7xx_clk.c hw/misc/npcm7xx_clk: Don't leak string in npcm7xx_clk_sel_init() 2022-03-18 10:55:15 +00:00
npcm7xx_gcr.c hw/*: Use type casting for SysBusDevice in NPCM7XX 2021-01-12 21:19:02 +00:00
npcm7xx_mft.c hw/misc: Add NPCM7XX MFT Module 2021-03-12 12:48:56 +00:00
npcm7xx_pwm.c hw/misc: Add GPIOs for duty in NPCM7xx PWM 2021-03-12 12:48:56 +00:00
npcm7xx_rng.c hw/*: Use type casting for SysBusDevice in NPCM7XX 2021-01-12 21:19:02 +00:00
nrf51_rng.c
omap_clk.c
omap_gpmc.c hw/arm/omap: Drop useless casts from void * to pointer 2023-01-12 17:15:09 +00:00
omap_l4.c hw/arm/omap: Drop useless casts from void * to pointer 2023-01-12 17:15:09 +00:00
omap_sdrc.c hw/arm/omap: Drop useless casts from void * to pointer 2023-01-12 17:15:09 +00:00
omap_tap.c hw/arm/omap: Drop useless casts from void * to pointer 2023-01-12 17:15:09 +00:00
pc-testdev.c Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
pca9552.c misc/pca9552: Fix LED status register indexing in pca955x_get_led() 2021-09-20 08:50:59 +02:00
pci-testdev.c include/hw/pci: Split pci_device.h off pci.h 2023-01-08 01:54:22 -05:00
pvpanic-isa.c acpi: pvpanic-isa: use AcpiDevAmlIfClass:build_dev_aml to provide device's AML 2022-06-09 19:32:49 -04:00
pvpanic-pci.c include/hw/pci: Split pci_device.h off pci.h 2023-01-08 01:54:22 -05:00
pvpanic.c hw/misc/pvpanic: Use standard headers instead 2022-03-06 05:08:23 -05:00
sbsa_ec.c hw/misc/sbsa_ec: Declare QOM macros using OBJECT_DECLARE_SIMPLE_TYPE() 2023-01-12 17:15:09 +00:00
sifive_e_prci.c hw: Remove superfluous includes of hw/hw.h 2021-05-02 17:24:50 +02:00
sifive_test.c hw: Remove superfluous includes of hw/hw.h 2021-05-02 17:24:50 +02:00
sifive_u_otp.c hw/misc/sifive_u_otp: Remove the deprecated OTP config with '-drive if=none' 2023-01-26 13:25:07 +01:00
sifive_u_prci.c hw/riscv: Move sifive_u_prci model to hw/misc 2020-09-09 15:54:19 -07:00
slavio_misc.c Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
stm32f2xx_syscfg.c hw/misc/stm32f2xx_syscfg: Remove extraneous IRQ 2020-11-10 11:03:48 +00:00
stm32f4xx_exti.c
stm32f4xx_syscfg.c
trace-events hw/misc: AXP209 PMU Emulation 2023-01-12 16:50:19 +00:00
trace.h trace: switch position of headers to what Meson requires 2020-08-21 06:18:24 -04:00
tz-mpc.c memory: Add IOMMUTLBEvent 2020-12-08 13:48:57 -05:00
tz-msc.c
tz-ppc.c tz-ppc: add dummy read/write methods 2021-02-08 15:15:32 +01:00
unimp.c hw/misc/unimp: Display the offset with width of the region size 2020-08-28 10:02:46 +01:00
virt_ctrl.c hw/m68k: Fix typo in SPDX tag 2021-11-09 10:11:27 +01:00
vmcoreinfo.c
xlnx-versal-crl.c hw/misc: Add a model of the Xilinx Versal CRL 2022-04-21 11:37:03 +01:00
xlnx-versal-pmc-iou-slcr.c hw/misc: Add a model of Versal's PMC SLCR 2022-01-28 14:29:46 +00:00
xlnx-versal-xramc.c hw/misc: versal: Add a model of the XRAM controller 2021-03-12 12:40:09 +00:00
xlnx-zynqmp-apu-ctrl.c error: Drop superfluous #include "qapi/qmp/qerror.h" 2023-02-23 13:56:14 +01:00
xlnx-zynqmp-crf.c hw/misc: Add a model of the Xilinx ZynqMP CRF 2022-03-18 11:31:20 +00:00
zynq_slcr.c hw/misc: zynq_slcr: Correctly compute output clocks in the reset exit phase 2021-09-13 16:07:20 +01:00