Question

移植linux内核到mini2440的问题，我在第一步make s3c2410_defconfig时就有错误

错误为arch/arm/configs/s3c2410_defconfig:1924:warning: symbol value 'm' invalid for LEDS_CLASS
warning: (NETFILTER_XT_MATCH_REALM && NET && INET && NETFILTER && NETFILTER_XTABLES && NETFILTER_ADVANCED || NET_CLS_ROUTE4 && NET && NET_SCHED) selects NET_CLS_ROUTE which has unmet direct dependencies (NET && NET_SCHED)
warning: (ARCH_RPC && <choice> || MACH_VPAC270 && ARCH_PXA || MACH_REALVIEW_PB11MP && ARCH_REALVIEW || MACH_REALVIEW_PBA8 && ARCH_REALVIEW || MACH_REALVIEW_PBX && ARCH_REALVIEW || MACH_BAST_IDE && ARCH_S3C2410 || MACH_ANUBIS && ARCH_S3C2410) selects HAVE_PATA_PLATFORM which has unmet direct dependencies (ATA && ATA_SFF)
warning: (NETFILTER_XT_MATCH_REALM && NET && INET && NETFILTER && NETFILTER_XTABLES && NETFILTER_ADVANCED || NET_CLS_ROUTE4 && NET && NET_SCHED) selects NET_CLS_ROUTE which has unmet direct dependencies (NET && NET_SCHED)
warning: (ARCH_RPC && <choice> || MACH_VPAC270 && ARCH_PXA || MACH_REALVIEW_PB11MP && ARCH_REALVIEW || MACH_REALVIEW_PBA8 && ARCH_REALVIEW || MACH_REALVIEW_PBX && ARCH_REALVIEW || MACH_BAST_IDE && ARCH_S3C2410 || MACH_ANUBIS && ARCH_S3C2410) selects HAVE_PATA_PLATFORM which has unmet direct dependencies (ATA && ATA_SFF)
我编译的是 37.3的内核，在ubuntu上，这是啥原因呢？

Answer 1

进行OS移植，首先要明确目标板上CPU、FLASH、SDRAM的情况，以尽可能相一致为原则，先找出一个与所移植目标板为同一个或同一系列处理器的开发板为移植参考板。
2440的基本参和告州数如下：
CPU处理唤蔽器
– Samsung S3C2440AL，主频400MHz，最高533MHz。
SDRAM内存
– 板载64MB SDRAM
– 32bit数据总线
– SDRAM时钟频率高达100MHz
– Hynix809E
Flash存储器
– 板载64MB Nand Flash，掉电非易失
– 板载2MB Nor Flash
以2410为参考，修改Makefile和源文件，如：
修改顶层Makefile
在smdk2410_config : unconfig
@$(MKCONFIG) $(@:_config=) arm arm920t smdk2410 NULL s3c24x0
之后友腔，添加以下内容：
tq2440_config : unconfig
@$(MKCONFIG) $(@:_config=) arm arm920t tq2440 NULL s3c24x0

Answer 2

好专业呀