Adding trimmed kernel falcon configuration patch

[UtsavAgarwalADI]

Trimming down kernel for faster falcon boot

Kernel now takes ~1s to initialize before interactive shell

[2025-01-08 18:32:18.695] Starting kernel ...
[2025-01-08 18:32:18.695]
[2025-01-08 18:32:18.739] Booting Linux on physical CPU 0x0000000000 [0x412fd050]
[2025-01-08 18:32:18.739] Linux version 5.15.168-yocto-falcon-154892-g7b82bccfe946-dirty (utsav@blackbox) (aarch64-linux-gnu-gcc (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0, GNU ld (GNU Binutils for Ubuntu) 2.38) #490 SMP PREEMPT Wed Jan 8 18:27:12 GMT 2025
[2025-01-08 18:32:18.740] Machine model: ADI 64-bit SC598 SOM EZ Kit
[2025-01-08 18:32:18.740] earlycon: adi_uart0 at MMIO 0x0000000031003000 (options '')
[2025-01-08 18:32:18.740] printk: bootconsole [adi_uart0] enabled
[2025-01-08 18:32:18.740] efi: UEFI not found.
[2025-01-08 18:32:18.740] Reserved memory: created DMA memory pool at 0x0000000020084000, size 0 MiB
[2025-01-08 18:32:18.788] OF: reserved mem: initialized node vdev0buffer@20084000, compatible id shared-dma-pool
[2025-01-08 18:32:18.789] Reserved memory: created DMA memory pool at 0x00000000200a8000, size 0 MiB
[2025-01-08 18:32:18.789] OF: reserved mem: initialized node vdev0buffer@200A8000, compatible id shared-dma-pool
[2025-01-08 18:32:18.789] NUMA: No NUMA configuration found
[2025-01-08 18:32:18.789] NUMA: Faking a node at [mem 0x0000000020040000-0x000000009dffffff]
[2025-01-08 18:32:18.789] NUMA: NODE_DATA [mem 0x9df5bf00-0x9df5dfff]
[2025-01-08 18:32:18.789] Zone ranges:
[2025-01-08 18:32:18.789]   DMA      [mem 0x0000000020040000-0x000000009dffffff]
[2025-01-08 18:32:18.839]   DMA32    empty
[2025-01-08 18:32:18.839]   Normal   empty
[2025-01-08 18:32:18.839] Movable zone start for each node
[2025-01-08 18:32:18.839] Early memory node ranges
[2025-01-08 18:32:18.839]   node   0: [mem 0x0000000020040000-0x000000002007ffff]
[2025-01-08 18:32:18.840]   node   0: [mem 0x0000000090000000-0x000000009dffffff]
[2025-01-08 18:32:18.840] Initmem setup node 0 [mem 0x0000000020040000-0x000000009dffffff]
[2025-01-08 18:32:18.840] On node 0, zone DMA: 64 pages in unavailable ranges
[2025-01-08 18:32:18.840] On node 0, zone DMA: 32640 pages in unavailable ranges
[2025-01-08 18:32:18.840] On node 0, zone DMA: 8192 pages in unavailable ranges
[2025-01-08 18:32:18.840] percpu: Embedded 26 pages/cpu s66528 r8192 d31776 u106496
[2025-01-08 18:32:18.883] Detected VIPT I-cache on CPU0
[2025-01-08 18:32:18.883] CPU features: detected: GIC system register CPU interface
[2025-01-08 18:32:18.883] CPU features: detected: Virtualization Host Extensions
[2025-01-08 18:32:18.883] CPU features: detected: Qualcomm erratum 1009, or ARM erratum 1286807, 2441009
[2025-01-08 18:32:18.883] CPU features: detected: ARM errata 1165522, 1319367, or 1530923
[2025-01-08 18:32:18.883] alternatives: patching kernel code
[2025-01-08 18:32:18.883] Built 1 zonelists, mobility grouping on.  Total pages: 56511
[2025-01-08 18:32:18.883] Policy zone: DMA
[2025-01-08 18:32:18.883] Kernel command line: earlycon=adi_uart,0x31003000 console=ttySC0,115200 vmalloc=512M cadence-quadspi.ospi_id=0 cadence-quadspi.ospi_mode=spi
[2025-01-08 18:32:18.934] Unknown kernel command line parameters "vmalloc=512M", will be passed to user space.
[2025-01-08 18:32:18.934] Dentry cache hash table entries: 32768 (order: 6, 262144 bytes, linear)
[2025-01-08 18:32:18.934] Inode-cache hash table entries: 16384 (order: 5, 131072 bytes, linear)
[2025-01-08 18:32:18.935] mem auto-init: stack:off, heap alloc:off, heap free:off
[2025-01-08 18:32:18.935] Memory: 212040K/229632K available (4160K kernel code, 570K rwdata, 904K rodata, 1216K init, 217K bss, 17592K reserved, 0K cma-reserved)
[2025-01-08 18:32:18.935] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[2025-01-08 18:32:18.979] trace event string verifier disabled
[2025-01-08 18:32:18.979] rcu: Preemptible hierarchical RCU implementation.
[2025-01-08 18:32:18.979] rcu:  RCU event tracing is enabled.
[2025-01-08 18:32:18.979] rcu:  RCU restricting CPUs from NR_CPUS=256 to nr_cpu_ids=1.
[2025-01-08 18:32:18.979]       Trampoline variant of Tasks RCU enabled.
[2025-01-08 18:32:18.979] rcu: RCU calculated value of scheduler-enlistment delay is 25 jiffies.
[2025-01-08 18:32:18.979] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=1
[2025-01-08 18:32:18.980] NR_IRQS: 64, nr_irqs: 64, preallocated irqs: 0
[2025-01-08 18:32:18.980] GICv3: GIC: Using split EOI/Deactivate mode
[2025-01-08 18:32:19.023] GICv3: 384 SPIs implemented
[2025-01-08 18:32:19.023] GICv3: 384 SPIs implemented                                                                                                                                                                                                 [56/1881][2025-01-08 18:32:19.023] GICv3: 0 Extended SPIs implemented
[2025-01-08 18:32:19.023] GICv3: Distributor has no Range Selector support
[2025-01-08 18:32:19.023] Root IRQ handler: 0xffff8000080100a4
[2025-01-08 18:32:19.023] GICv3: 16 PPIs implemented
[2025-01-08 18:32:19.023] GICv3: CPU0: found redistributor 0 region 0:0x0000000031240000
[2025-01-08 18:32:19.024] arch_timer: cp15 timer(s) running at 31.25MHz (phys).
[2025-01-08 18:32:19.024] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0xe6a171046, max_idle_ns: 881590405314 ns
[2025-01-08 18:32:19.024] sched_clock: 56 bits at 31MHz, resolution 32ns, wraps every 4398046511088ns
[2025-01-08 18:32:19.068] clocksource: cs_adi_gptimer: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 15290083572 ns
[2025-01-08 18:32:19.068] sched_clock: 32 bits at 125MHz, resolution 8ns, wraps every 17179869180ns
[2025-01-08 18:32:19.069] Console: colour dummy device 80x25
[2025-01-08 18:32:19.069] Calibrating delay loop (skipped), value calculated using timer frequency.. 62.50 BogoMIPS (lpj=125000)
[2025-01-08 18:32:19.069] pid_max: default: 4096 minimum: 301
[2025-01-08 18:32:19.069] Mount-cache hash table entries: 512 (order: 0, 4096 bytes, linear)
[2025-01-08 18:32:19.069] Mountpoint-cache hash table entries: 512 (order: 0, 4096 bytes, linear)
[2025-01-08 18:32:19.069] rcu: Hierarchical SRCU implementation.
[2025-01-08 18:32:19.112] EFI services will not be available.
[2025-01-08 18:32:19.112] smp: Bringing up secondary CPUs ...
[2025-01-08 18:32:19.112] smp: Brought up 1 node, 1 CPU
[2025-01-08 18:32:19.112] SMP: Total of 1 processors activated.
[2025-01-08 18:32:19.112] CPU features: detected: 32-bit EL0 Support
[2025-01-08 18:32:19.112] CPU features: detected: Data cache clean to the PoU not required for I/D coherence
[2025-01-08 18:32:19.112] CPU features: detected: CRC32 instructions
[2025-01-08 18:32:19.112] CPU features: detected: RCpc load-acquire (LDAPR)
[2025-01-08 18:32:19.113] CPU features: detected: LSE atomic instructions
[2025-01-08 18:32:19.113] CPU features: detected: Speculative Store Bypassing Safe (SSBS)
[2025-01-08 18:32:19.163] CPU: All CPU(s) started at EL2
[2025-01-08 18:32:19.163] devtmpfs: initialized
[2025-01-08 18:32:19.163] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
[2025-01-08 18:32:19.163] futex hash table entries: 16 (order: -2, 1024 bytes, linear)
[2025-01-08 18:32:19.163] pinctrl core: initialized pinctrl subsystem
[2025-01-08 18:32:19.163] DMI not present or invalid.
[2025-01-08 18:32:19.163] DMA: preallocated 128 KiB GFP_KERNEL pool for atomic allocations
[2025-01-08 18:32:19.163] DMA: preallocated 128 KiB GFP_KERNEL|GFP_DMA pool for atomic allocations
[2025-01-08 18:32:19.164] DMA: preallocated 128 KiB GFP_KERNEL|GFP_DMA32 pool for atomic allocations
[2025-01-08 18:32:19.201] thermal_sys: Registered thermal governor 'step_wise'
[2025-01-08 18:32:19.201] cpuidle: using governor menu
[2025-01-08 18:32:19.201] hw-breakpoint: found 6 breakpoint and 4 watchpoint registers.
[2025-01-08 18:32:19.201] ASID allocator initialised with 65536 entries
[2025-01-08 18:32:19.201] Serial: AMBA PL011 UART driver
[2025-01-08 18:32:19.251] ACPI: Interpreter disabled.
[2025-01-08 18:32:19.251] iommu: Default domain type: Translated
[2025-01-08 18:32:19.251] iommu: DMA domain TLB invalidation policy: strict mode
[2025-01-08 18:32:19.251] i2c-adi-twi 31001400.twi: ADI on-chip I2C TWI Controller, regs_base@(____ptrval____)
[2025-01-08 18:32:19.251] gpio-496 (led1-en): hogged as output/high
[2025-01-08 18:32:19.251] gpio-497 (led2-en): hogged as output/high
[2025-01-08 18:32:19.251] gpio-498 (led3-en): hogged as output/high
[2025-01-08 18:32:19.251] gpio-499 (~spi2d2-d3-en): hogged as output/low
[2025-01-08 18:32:19.251] gpio-500 (~spi2flash-cs): hogged as output/low
[2025-01-08 18:32:19.251] gpio-501 (~uart0-en): hogged as output/low
[2025-01-08 18:32:19.251] gpio-502 (~uart0-flow-en): hogged as output/high
[2025-01-08 18:32:19.303] gpio-504 (emmc-en): hogged as output/low
[2025-01-08 18:32:19.303] gpio-505 (emmc-som-en): hogged as output/high
[2025-01-08 18:32:19.303] gpio-480 (eeprom-en): hogged as output/low
[2025-01-08 18:32:19.303] gpio-481 (pushbutton-en): hogged as output/high
[2025-01-08 18:32:19.303] gpio-482 (~microsd-spi): hogged as output/high
[2025-01-08 18:32:19.304] gpio-483 (~ftdi-usb-en): hogged as output/low
[2025-01-08 18:32:19.303] gpio-482 (~microsd-spi): hogged as output/high
[2025-01-08 18:32:19.304] gpio-483 (~ftdi-usb-en): hogged as output/low
[2025-01-08 18:32:19.304] gpio-484 (~can-en): hogged as output/high
[2025-01-08 18:32:19.304] gpio-486 (adau1962-en): hogged as output/low
[2025-01-08 18:32:19.304] gpio-487 (adau1979-en): hogged as output/low
[2025-01-08 18:32:19.304] gpio-488 (octal-spi-cs-en): hogged as output/low
[2025-01-08 18:32:19.361] gpio-489 (~spdif-digital-en): hogged as output/high
[2025-01-08 18:32:19.361] gpio-490 (~spdif-optical-en): hogged as output/high
[2025-01-08 18:32:19.361] gpio-491 (audio-jack-sel): hogged as output/high
[2025-01-08 18:32:19.361] gpio-492 (~mlb-en): hogged as output/high
[2025-01-08 18:32:19.361] gpio-493 (~eth1-en): hogged as output/low
[2025-01-08 18:32:19.361] gpio-494 (~eth1-reset): hogged as output/low
[2025-01-08 18:32:19.361] gpio-495 (~gige-reset): hogged as output/high
[2025-01-08 18:32:19.361] i2c-adi-twi 31001600.twi: ADI on-chip I2C TWI Controller, regs_base@(____ptrval____)
[2025-01-08 18:32:19.361] clocksource: Switched to clocksource arch_sys_counter
[2025-01-08 18:32:19.377] pnp: PnP ACPI: disabled
[2025-01-08 18:32:19.407] hw perfevents: enabled with armv8_pmuv3 PMU driver, 7 counters available
[2025-01-08 18:32:19.407] Unpacking initramfs...
[2025-01-08 18:32:19.423] workingset: timestamp_bits=42 max_order=16 bucket_order=0
[2025-01-08 18:32:19.444] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 252)
[2025-01-08 18:32:19.444] io scheduler mq-deadline registered
[2025-01-08 18:32:19.472] io scheduler kyber registered
[2025-01-08 18:32:19.472] adi-dma 31022000.dma: Creating new peripheral DMA controller instance
[2025-01-08 18:32:19.514] adi-dma 31023000.dma: Creating new peripheral DMA controller instance
[2025-01-08 18:32:19.514] adi-dma 3109a000.dma: Creating new MDMA controller instance
[2025-01-08 18:32:19.606] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[2025-01-08 18:32:19.606] ADI serial driver
[2025-01-08 18:32:19.606] adi-uart4 31003000.uart: Serial probe
[2025-01-08 18:32:19.606] 31003000.uart: ttySC0 at MMIO 0x0 (irq = 23, base_baud = 7812500) is a ADI-UART4
[2025-01-08 18:32:19.606] printk: console [ttySC0] enabled
[2025-01-08 18:32:19.606] printk: console [ttySC0] enabled
[2025-01-08 18:32:19.606] printk: bootconsole [adi_uart0] disabled
[2025-01-08 18:32:19.606] printk: bootconsole [adi_uart0] disabled
[2025-01-08 18:32:19.606] cacheinfo: Unable to detect cache hierarchy for CPU 0
[2025-01-08 18:32:19.607] VFIO - User Level meta-driver version: 0.3
[2025-01-08 18:32:19.607] i2c_dev: i2c /dev entries driver
[2025-01-08 18:32:19.607] adsp-sru-ctrl 310ca000.sru-ctrl-dai1: Started without extended selection codes (SC573, SC584, SC589)
[2025-01-08 18:32:19.640] clk: Disabling unused clocks
[2025-01-08 18:32:19.656] Freeing initrd memory: 2768K
[2025-01-08 18:32:19.679] Freeing unused kernel memory: 1216K
[2025-01-08 18:32:19.679] Run /init as init process
[2025-01-08 18:32:19.774] mount: mount
[2025-01-08 18:32:19.775]          Analog Initial Ram Filesystem
[2025-01-08 18:32:19.775]                 www.analog.com
[2025-01-08 18:32:19.775]               www.yoctoproject.org
[2025-01-08 18:32:19.775]
[2025-01-08 18:32:19.775] Analog [Initramfs]: Preparing Operating System....
[2025-01-08 18:32:19.775] Analog [Initramfs]: Mounting Root File System...
[2025-01-08 18:32:19.775] ing tmpfs on /dev/shm failed: Invalid argument
[2025-01-08 18:32:19.775] Analog [Initramfs]: No root device found, dropping to getty
[2025-01-08 18:32:19.775] udhcpc: socket: Function not implemented
[2025-01-08 18:32:19.886]
[2025-01-08 18:32:19.886] adsp-sc598-som-ezkit login: root
[2025-01-08 18:37:37.880] Password:
[2025-01-08 18:37:38.711] ~ # uname -a
[2025-01-08 18:37:41.173] Linux adsp-sc598-som-ezkit 5.15.168-yocto-falcon-154892-g7b82bccfe946-dirty #490 SMP PREEMPT Wed Jan 8 18:27:12 GMT 2025 aarch64 GNU/Linux