[add] add cromfs start with bootargs cmd #9064
Merged
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拉取/合并请求描述:(PR description)
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为什么提交这份PR (why to submit this PR)
增加cromfs从bootargs启动,在rt_hw_common_setup();时会调用rt_fdt_scan_initrd函数,该函数会判断用户有没有在bootargs中传入cromfs这一变量,如果有,就根据用户传入的起始地址和长度为其注册一块名字为initrd的内存区域,在components/drivers/core/mnt.c的rootfs_mnt_init中,会判断系统有没有注册名为initrd的内存区,如果有,将fsdata的指针指向该内存区,并mount这一块内存区的数据作为根文件系统。
用法:在uboot中加载cromfs.bin到内存中,在bootarg中传入内存起始地址和长度
load [<dev[:part]> [ [<cromfs.bin>]]]
setenv bootargs cromfs=<startaddr(HEX)>,<len(hex)>
例:
load mmc 1:1 0x10800000 cromfs.bin
setenv bootargs cromfs=0x10800000,0x3897ef0
你的解决方案是什么 (what is your solution)
请提供验证的bsp和config (provide the config and bsp)
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当前拉取/合并请求的状态 Intent for your PR
必须选择一项 Choose one (Mandatory):
代码质量 Code Quality:
我在这个拉取/合并请求中已经考虑了 As part of this pull request, I've considered the following:
#if 0
代码,不包含已经被注释了的代码 All redundant code is removed and cleaned up