Problem 1.
The partition table printed after Linux booted up in the previous section looks like this:
And the actual partition table for Nand Flash is not consistent, actually in the uboot porting tutorial (08 – Porting uboot from 04/2012 to JZ2440), the MTD partitioning of the kernel is as follows:
0x00000000-0x00040000 : "bootloader"
0x00040000-0x00060000 : "params"
0x00060000-0x00260000 : "kernel"
0x00260000-0x10000000 : "root"
Copy the code
Next modify the MTD partition table in the kernel.
2. Modify the MTD partition table in the kernel
2.1. Location of modified code
Judgment inarch/arm/mach-s3c24xx/common-smdk.c:113:
Enter the file, sure enough partition table here:
2.2. Modify the kernel partition table
Change to the following partition table, where the three macros define the following meaning:
MTDPART_OFS_APPEND
: appends to the end address of the previous partition.MTDPART_SIZ_FULL
: All the space left;
Recompile, download to memory on the development board, and then boot the kernel, you can see that the partition table has been modified successfully:
To receive more exciting articles and resources, please subscribe to my wechat official account: “McUlover666”.