Starting kernel ...
early_atags_to_fdt() success
Booting Linux on physical CPU 0x0
Linux version 5.10.117 (tp@ubuntu) (arm-sigmastar-linux-uclibcgnueabihf-9.1.0-gcc (crosstool-NG 1.24.0) 9.1.0, GNU ld (crosstool-NG 1.24.0) 2.32) #2 PREEMPT Tue Sep 30 12:01:31 CST 2025
CPU: ARMv7 Processor [411fd010] revision 0 (ARMv7), cr=50c5383d
CPU: div instructions available: patching division code
CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
early_atags_to_fdt() success
OF: fdt: Machine model: IFORD SSC029C-S01A
LXmem is 0x4000000 PHYS_OFFSET is 0x20000000
Add mem start 0x20000000 size 0x4000000!!!!
LX_MEM = 0x20000000, 0x4000000
LX_MEM2 = 0x0, 0x0
LX_MEM3 = 0x0, 0x0
MMU_MEM = 0x0, 0x0
EMAC_LEN= 0x0
DRAM_LEN= 0x0
Memory policy: Data cache writeback
Reserved memory: created CMA memory pool at 0x23000000, size 16 MiB
OF: reserved mem: initialized node cma0, compatible id shared-dma-pool
no any mmap reserved
deal_with_reserve_mma_heap memblock_reserve success mma_config[0].reserved_start=
0x21960000 size:16a0000
Zone ranges:
Normal [mem 0x0000000020000000-0x0000000023ffffff]
Movable zone start for each node
Early memory node ranges
node 0: [mem 0x0000000020000000-0x000000002195ffff]
node 0: [mem 0x0000000023000000-0x0000000023ffffff]
Initmem setup node 0 [mem 0x0000000020000000-0x0000000023ffffff]
CPU: All CPU(s) started in SVC mode.
Built 1 zonelists, mobility grouping on. Total pages: 10464
Kernel command line: console=ttyS0,115200n8r androidboot.console=ttyS0 root=/dev/mtdblock10 rootfstype=squashfs noinitrd init=/etc/preinit LX_MEM=0x4000000 mma_heap=mma_heap_name0,miu=0,sz=0x16a0000 mma_memblock_remove=1
Dentry cache hash table entries: 8192 (order: 3, 32768 bytes, linear)
Inode-cache hash table entries: 4096 (order: 2, 16384 bytes, linear)
mem auto-init: stack:off, heap alloc:off, heap free:off
Memory: 20880K/42368K available (2496K kernel code, 403K rwdata, 1136K rodata, 120K init, 125K bss, 5104K reserved, 16384K cma-reserved)
SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
rcu: Preemptible hierarchical RCU implementation.
Trampoline variant of Tasks RCU enabled.
rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies.
NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16
GICv3: 192 SPIs implemented
GICv3: 0 Extended SPIs implemented
GICv3: Distributor has no Range Selector support
GICv3: 16 PPIs implemented
GICv3: CPU0: found redistributor 0 region 0:0x16040000
sstar_init_main_intc: np->name=sstar_main_intc, parent=gic
sstar_pm_main_init: np->name=sstar_pm_main_intc, parent=sstar_main_intc
sstar_pm_gpi_init: np->name=sstar_pm_gpi_intc, parent=sstar_main_intc
sstar_gpi_init: np->name=sstar_gpi_intc, parent=sstar_main_intc
random: get_random_bytes called from start_kernel+0x1bb/0x308 with crng_init=0
arch_timer: cp15 timer(s) running at 6.00MHz (virt).
clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x1623fa770, max_idle_ns: 440795202238 ns
sched_clock: 56 bits at 6MHz, resolution 166ns, wraps every 4398046511055ns
Switching to timer-based delay loop, resolution 166ns
printk: console [ttyS0] enabled
Calibrating delay loop (skipped), value calculated using timer frequency.. 12.00 BogoMIPS (lpj=60000)
pid_max: default: 4096 minimum: 301
Mount-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
CPU: Testing write buffer coherency: ok
Setting up static identity map for 0x20008200 - 0x20008254
rcu: Hierarchical SRCU implementation.
devtmpfs: initialized
VFP support v0.3: implementor 41 architecture 3 part 40 variant 1 rev 2
clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
futex hash table entries: 16 (order: -4, 448 bytes, linear)
NET: Registered protocol family 16
DMA: preallocated 256 KiB pool for atomic coherent allocations
Version : MVX4##I###g7993bdfKL_LX510##[BR:develop_master_1.7]#XVM
irq: IRQ35: trimming hierarchy from :soc:sstar_main_intc
irq: IRQ36: trimming hierarchy from :soc:sstar_main_intc
irq: IRQ37: trimming hierarchy from :soc:sstar_main_intc
irq: IRQ38: trimming hierarchy from :soc:sstar_main_intc
GPIO: probe end
[Padmux]reset PAD48(reg 0x3f00:52; mask0x300) t0 I2C0_MODE_4 (org: PM_SDIO_MODE_3)
Do qos-initialize
[sstar_update_dq_init]
clocksource: Switched to clocksource arch_sys_counter
NET: Registered protocol family 2
IP idents hash table entries: 2048 (order: 2, 16384 bytes, linear)
tcp_listen_portaddr_hash hash table entries: 256 (order: 0, 6144 bytes, linear)
TCP established hash table entries: 1024 (order: 0, 4096 bytes, linear)
TCP bind hash table entries: 1024 (order: 2, 20480 bytes, linear)
TCP: Hash tables configured (established 1024 bind 1024)
UDP hash table entries: 128 (order: 0, 6144 bytes, linear)
UDP-Lite hash table entries: 128 (order: 0, 6144 bytes, linear)
NET: Registered protocol family 1
Initialise system trusted keyrings
workingset: timestamp_bits=30 max_order=14 bucket_order=0
squashfs: version 4.0 (2009/01/31) Phillip Lougher
jffs2: version 2.2. © 2001-2006 Red Hat, Inc.
Key type asymmetric registered
Asymmetric key parser 'x509' registered
io scheduler mq-deadline registered
zram: Added device: zram0
i2c /dev entries driver
failed to get uart clk_mcu
failed to get uart clk_mcu
please set rtc timer (hwclock -w)
sstar,rtcpwc 1f006800.rtcpwc: registered as rtc0
sstar,rtcpwc 1f006800.rtcpwc: setting system clock to 1970-01-01T00:00:00 UTC (0)
[Padmux]reset PAD48(reg 0x3f00:5; mask0x8) t0 I2C0_MODE_4 (org: GPIO_MODE)
[Padmux]reset PAD49(reg 0x3f00:6; mask0x8) t0 I2C0_MODE_4 (org: GPIO_MODE)
[Padmux]reset PAD3(reg 0x103e00:3; mask0x8) t0 I2C1_MODE_1 (org: GPIO_MODE)
[Padmux]reset PAD0(reg 0x103e00:0; mask0x8) t0 I2C1_MODE_1 (org: GPIO_MODE)
[Padmux]reset PAD65(reg 0x3f00:16; mask0x8) t0 PM_I2CM0_MODE_1 (org: GPIO_MODE)
[Padmux]reset PAD66(reg 0x3f00:17; mask0x8) t0 PM_I2CM0_MODE_1 (org: GPIO_MODE)
cryptodev: driver 1.10(a1e738a) loaded.
ms_cpufreq_init 502 SIDD: 0x62 OSC:0xea
ms_cpufreq_init 503 SIDD Thres: 0x0 OSC Thres:0x978
random: fast init done
random: crng init done
[ms_cpufreq_init] Current clk=800000048
SPI 54M
[FLASH] Device id is 0xa1 0x40 0x18
[SPINOR] ReadData = 0x6b
[SPINOR] Dummy = 0x8
[SPINOR] pageProgram = 0x2
[FLASH] BDMA mode
[SPINOR] complement = 0x0
[SPINOR] top/buttom = 0x0
[SPINOR] blocks = 0x0
[SPINOR] SRP0 = 0x0
[SPINOR] SRP1 = 0x0
[FLASH] End flash init.
sstar_spinor_probe: 7mtd .name = nor0, .size = 0x01000000 (16MiB)
.erasesize = 0x00001000 .numeraseregions = 0
NET: Registered protocol family 10
Segment Routing with IPv6
mip6: Mobile IPv6
sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver
NET: Registered protocol family 17
[sstar_pm_init] MIU0_BASE=20000000
[sstar_pm_init] resume_entry=0x2000f8cc, suspend_imi_vbase=0XC4876000
Loading compiled-in X.509 certificates
INFO pm_part_init_device [89] found driver sstar-norflash
INFO pm_part_init_device [114] mtd nor0 will use same node
INFO pm_part_init_device [118] flash device soc:norflash0,update device node
INFO create_part_to_mtd [49] mtd master is already register,only do partition
Deleting MTD partitions on "nor0":
clk: Not disabling unused clocks
/dev/root: Can't open blockdev
VFS: Cannot open root device "mtdblock10" or unknown-block(0,0): error -6
Please append a correct "root=" boot option; here are the available partitions:
1f00 16384 mtdblock0
(driver?)
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
---[ end Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) ]---
问题在哪
本文探讨了在嵌入式系统中遇到的Flash写保护问题，特别是在更换MX25L12835F和W25Q128JV型号后，由于固件不匹配导致的写入失败现象。分析了写保护机制，包括电压阈值、自动写入禁用及软件硬件写保护，并提供了解决方案。
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