[ 1.707503] cfg80211: Loading compiled-in X.509 certificates for regulatory database
[ 1.717596] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
[ 1.724231] ALSA device list:
[ 1.727198] #0: sun8i-a33-audio
[ 1.731001] platform regulatory.0: loading regulatory.db failed
[ 1.736936] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
[.db
[ 1.748784] VFS: Mounted root (squashfs filesystem) readonly on device 31:6.
[ 1.759426] devtmpfs: mounted
[ 1.759791] mmc0: new high speed SDIO card at address 0001
[ 1.769257] Freeing unused kernel memory: 1024K
[ 1.770834] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43430-sdio for chip BCM43430/1
[ 1.819524] Run /sbin/init as init process
[ 1.984161] brcmfmac mmc0:0001:1: loading brcm/brcmfmac43430-sdio.bin success
[ 2.051478] brcmfmac mmc0:0001:1: loading brcm/brcmfmac43430-sdio.sinovoip,bananapi-m2m.txt success
[ 2.369805] random: crng init done日志如图，可能的原因是regulatory.db 的加载早与文件系统挂载完成，导致找不到指定文件。 因为 regulatory.db 文件确实存在于/lib/firmware中。
我尝试过在加载文件之前调用mdelay(3000)来延时，但问题依旧，表现为整个日志的时间都顺延了3S，请教一下这个问题该如何解决？
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解决办法2个：
1.将相关功能编译成模块。
.config - Linux/arm 5.4.63 Kernel Configuration
> Networking support > Wireless ──────────────────────────────────────────────────────────────────────────────────────
┌─────────────────────────────────────────────────── Wireless ────────────────────────────────────────────────────┐
│ Arrow keys navigate the menu. <Enter> selects submenus ---> (or empty submenus ----). Highlighted letters │
│ are hotkeys. Pressing <Y> includes, <N> excludes, <M> modularizes features. Press <Esc><Esc> to exit, <?> │
│ for Help, </> for Search. Legend: [*] built-in [ ] excluded <M> module < > module capable │
│ │
│ ┌─────────────────────────────────────────────────────────────────────────────────────────────────────────────┐ │
│ │ --- Wireless │ │
│ │ <M> cfg80211 - wireless configuration API │ │
│ │ [ ] nl80211 testmode command │ │
│ │ [ ] enable developer warnings │ │
│ │ [*] enable powersave by default │ │
│ │ [ ] cfg80211 DebugFS entries │ │
│ │ [*] cfg80211 wireless extensions compatibility │ │
│ │ [ ] lib80211 debugging messages │ │
│ │ <M> Generic IEEE 802.11 Networking Stack (mac80211) │ │
│ │ Default rate control algorithm (Minstrel) ---> │ │
│ │ [*] Enable mac80211 mesh networking support │ │
│ │ [ ] Enable LED triggers │ │
│ │ [ ] Export mac80211 internals in DebugFS │ │
│ │ [ ] Trace all mac80211 debug messages │ │
│ │ [ ] Select mac80211 debugging features ---- │ │
│ │ │ │
│ └─────────────────────────────────────────────────────────────────────────────────────────────────────────────┘ │
├─────────────────────────────────────────────────────────────────────────────────────────────────────────────────┤
│ <Select> < Exit > < Help > < Save > < Load > │
└─────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘2.骚操作，不建议用
在include/linux/init.h下新增
#define last_initcall(fn) __define_initcall(fn, 8)
#define last_initcall_sync(fn) __define_initcall(fn, 8s)
net/wireless/reg.c 下新增
last_initcall(regulatory_init_db);
//late_initcall(regulatory_init_db);
init/main.c 中新增
extern initcall_entry_t __initcall_start[];
extern initcall_entry_t __initcall0_start[];
extern initcall_entry_t __initcall1_start[];
extern initcall_entry_t __initcall2_start[];
extern initcall_entry_t __initcall3_start[];
extern initcall_entry_t __initcall4_start[];
extern initcall_entry_t __initcall5_start[];
extern initcall_entry_t __initcall6_start[];
extern initcall_entry_t __initcall7_start[];
extern initcall_entry_t __initcall8_start[]; //新增
extern initcall_entry_t __initcall_end[];
static initcall_entry_t *initcall_levels[] __initdata = {
__initcall0_start,
__initcall1_start,
__initcall2_start,
__initcall3_start,
__initcall4_start,
__initcall5_start,
__initcall6_start,
__initcall7_start,
__initcall8_start, //新增
__initcall_end,
};
static void __init do_initcalls(void)
{
int level;
for (level = 0; level < ARRAY_SIZE(initcall_levels) - 2; level++) // -1 改为-2
do_initcall_level(level);
}
static void __init do_last_initcalls(void)
{
do_initcall_level(ARRAY_SIZE(initcall_levels) - 2);
}
在这个kernel_init_freeable函数最末尾调用do_last_initcalls();
在include/asm-generic/vmlinux.lds.h中
#define INIT_CALLS \
__initcall_start = .; \
KEEP(*(.initcallearly.init)) \
INIT_CALLS_LEVEL(0) \
INIT_CALLS_LEVEL(1) \
INIT_CALLS_LEVEL(2) \
INIT_CALLS_LEVEL(3) \
INIT_CALLS_LEVEL(4) \
INIT_CALLS_LEVEL(5) \
INIT_CALLS_LEVEL(rootfs) \
INIT_CALLS_LEVEL(6) \
INIT_CALLS_LEVEL(7) \
INIT_CALLS_LEVEL(8) \ //新增
__initcall_end = .;
最近编辑记录 muxi01 (2023-11-03 18:31:12)
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