21 Jan
2008
21 Jan
'08
1 p.m.
On Sun, 20 Jan 2008 05:56:08 -0500 Mike Frysinger vapier@gentoo.org wrote:
- have memory display / flash write commands toggle the GPIO lines
- pros: user interface is transparent and not confusing by making it seem
like 1 flash exists (think software raid 0). able to use 1 write command and the lower layers will automatically split it across multiple flashes. should work with multiple types of flashes.
- cons: requires modification to cmd_mem.c and cfi_flash.c.
Wouldn't it be enough to just modify the blackfin-specific implementation of map_physmem() and unmap_physmem()? Just use some of the physical address bits to toggle the necessary GPIO lines and return a suitable pointer into the 4MB memory window.
Haavard