xref: /openbmc/u-boot/doc/README.JFFS2_NAND (revision 0b45a79f)
1JFFS2 NAND support:
2
3To enable, use the following #define in the board configuration file:
4
5#define CONFIG_JFFS2_NAND 1
6
7Configuration of partitions is similar to how this is done in  U-Boot
8for  JFFS2  on top NOR flash. If a single partition is used, it can be
9configured using the following #defines in the configuration file:
10
11#define CONFIG_JFFS2_NAND_DEV 0			/* nand device jffs2 lives on */
12#define CONFIG_JFFS2_NAND_OFF 0			/* start of jffs2 partition */
13#define CONFIG_JFFS2_NAND_SIZE 2*1024*1024	/* size of jffs2 partition */
14
15If more than a single partition is desired, the user can define a
16CONFIG_SYS_JFFS_CUSTOM_PART macro and implement a
17
18	struct part_info* jffs2_part_info(int part_num)
19
20function in a board-specific module. An example of such function is
21available in common/cmd_jffs2.c
22
23The default configuration for the DAVE board has a single JFFS2
24partition of 2 MB size.
25