在嵌入式驱动设备移植时,修改drivers/mtd/nand/Kconfig文件,请问这段代码的具体含义是什么: config MTD_NAND_S3C tristate"NAND Flash support for S3C SoC" depends on MTD_NAND &&(ARCH_S5PC1XX||ARCH_S5PC11X ||ARCH_S5PV2XX |[ARCH _S5PV210) help This enables the NAND flash controller on the S3C.No board specfic support is done by this driver, each boardmust advertise a platform_device for the driver to attach. config MTD_NAND_s3c_DEBUG bool "S3C NAND driver debug" depends on MTD_NAND_S3C help Enable debugging of the s3CNAND driver config MTD_NAND_S3C_HWECC bool "S3C NAND Hardware ECC" depends on MTD_NAND_S3C help Enable the use of the S3C's internal ECC generator whenusing NAND. Early versions of the chip have had problems withincorrect ECC generation,and if using these, the default ofsoftware Ecc is preferable.If you lay down a device with the hardware ECC, then you will currently not be able to switch to software, as there is noimplementation for ECC method used by the s3c
时间: 2024-03-15 11:42:01 浏览: 12
这段代码是在修改Kconfig文件,其中包含了三个配置选项:MTD_NAND_S3C、MTD_NAND_s3c_DEBUG、MTD_NAND_S3C_HWECC。
首先,MTD_NAND_S3C是一个三态(tristate)选项,表示是否启用S3C SoC的NAND Flash支持,它依赖于MTD_NAND和S3C SoC架构(ARCH_S5PC1XX、ARCH_S5PC11X、ARCH_S5PV2XX和ARCH_S5PV210)。
其次,MTD_NAND_s3c_DEBUG是一个布尔(bool)选项,它依赖于MTD_NAND_S3C,表示是否启用s3c NAND驱动的调试功能。
最后,MTD_NAND_S3C_HWECC也是一个布尔选项,依赖于MTD_NAND_S3C,表示是否启用S3C的硬件ECC(纠错码)生成器,用于在使用NAND时进行ECC检查和修复。此选项需要注意,因为早期版本的S3C芯片存在ECC生成不正确的问题,如果使用这些版本的芯片,则更倾向于使用软件ECC。同时,如果使用硬件ECC,那么就不能随意切换到软件ECC,因为s3c没有实现对应的ECC方法。