Hi, I'd like to hear comments about this. I am working with a fairly recent denx kernel tree (linuxppc_2_4_devel) and have noticed that apparently support for physmap MTD mapping driver is missing. Since physmap.c version 1.29 on, flash start address, size and buswidth have to be setup by the board support package, but mpc8xx uses a centralized .c file (arch/ppc/m8xx_setup.c) and include-files from arch/platforms/*, so there is no way of specifying flash geometry. I suggest something like this to solve the problem. If there is a better place to put this, please let me know.
------------------------- begin patch -------------------------- ---?arch/ppc/kernel/m8xx_setup.c.orig +++?arch/ppc/kernel/m8xx_setup.c @@?-35,6?+35,9?@@ ?#include?<linux/ioport.h> ?#include?<linux/bootmem.h> ?#include?<linux/seq_file.h> +#if?defined(CONFIG_MTD_PHYSMAP)?&&?defined(CONFIG_MTD) +#include?<linux/mtd/physmap.h> +#endif ? ?#include?<asm/mmu.h> ?#include?<asm/processor.h> @@?-510,4?+513,8?@@ ?#if?defined(CONFIG_IDE_8xx_PCCARD)?||?defined(CONFIG_IDE_8xx_DIRECT) ???? m8xx_ide_init(); ?#endif +#if?defined(CONFIG_MTD_PHYSMAP)?&&?defined(CONFIG_MTD) + /*?we?use?generic?physmap?mapping?driver?and?we?use?partitions?*/ + physmap_configure(CONFIG_MTD_PHYSMAP_START,?CONFIG_MTD_PHYSMAP_LEN,? CONFIG_MTD_PHYSMAP_BUSWIDTH,?NULL); +#endif ?} -------------------------- end patch ------------------------------- Greetings, -- David Jander Protonic Holland.
