linux/arch/arm/mach-davinci
David Brownell 3e9c18e1dc davinci: DM644x: NAND: update partitioning
Update NAND partitioning for the dm6446 evm, unmasking the hidden
data at the beginning and letting the kernel be updated from Linux.

 - This is boot-compatible with TI's software (U-Boot 1.20 and both
   the 2.6.10 and 2.6.18 kernels), in terms of startup and loading
   kernels from flash.

 - In the same way, it's also boot-compatible with mainline U-Boot,
   which stores U-Boot params in block 0 not block 16.

 - It's not quite compatible with systems that previously used NAND
   partitions to hold (filesystem) data.  The compatibilities are a
   bit different based on which kernel was used previously
     + Users of TI/MV kernels no longer see mtd2 "params"
       (mainline u-boot env is in a different place)
	* Filesystem is now mtd2 ... vs mtd3
     + Users of GIT kernels now see mtd0 and mtd1 partitions
	* Filesystem partition starts 640 KBytes earlier
	* Filesystem is now mtd2 ... vs mtd0
     * Linux now *uses* the flash-resident BBT
	* Removes annoying slowdown/hiccup during boot
	* Potentially ~64KB less space available with TI/MV kernels

If you *used* NAND partitions from Linux, there is no solution that's
fully compatible with all previous kernels in those respects ... ergo
this "best compromise".  It'd be good to back back up the filesystem
data; or, carry your own backwards-compatibility patch for awhile.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-04-27 09:50:18 -07:00
..
include/mach davinci: update DM644x support in preparation for more SoCs 2009-04-27 09:50:11 -07:00
board-dm644x-evm.c davinci: DM644x: NAND: update partitioning 2009-04-27 09:50:18 -07:00
clock.c davinci: major rework of clock, PLL, PSC infrastructure 2009-04-23 09:31:00 -07:00
clock.h davinci: major rework of clock, PLL, PSC infrastructure 2009-04-23 09:31:00 -07:00
devices.c davinci: update pin-multiplexing support 2009-04-27 09:49:46 -07:00
dm644x.c davinci: update DM644x support in preparation for more SoCs 2009-04-27 09:50:11 -07:00
dma.c davinci: add EDMA driver 2009-04-27 09:49:42 -07:00
gpio.c davinci: gpio bugfixes 2009-04-27 09:49:43 -07:00
id.c davinci: add arch_ioremap() which uses existing static mappings 2009-04-23 09:31:09 -07:00
io.c davinci: add arch_ioremap() which uses existing static mappings 2009-04-23 09:31:09 -07:00
irq.c davinci: DM355 IRQ Definitions 2009-04-27 09:49:44 -07:00
Kconfig davinci: update DM644x support in preparation for more SoCs 2009-04-27 09:50:11 -07:00
Makefile davinci: update DM644x support in preparation for more SoCs 2009-04-27 09:50:11 -07:00
Makefile.boot [ARM] 4303/3: base kernel support for TI DaVinci 2007-05-11 17:26:55 +01:00
mux.c davinci: update pin-multiplexing support 2009-04-27 09:49:46 -07:00
mux.h davinci: update pin-multiplexing support 2009-04-27 09:49:46 -07:00
psc.c davinci: PSC: Clear bits in MDCTL reg before setting new bits 2009-04-27 09:49:43 -07:00
serial.c davinci: serial: generalize for more SoCs 2009-04-27 09:49:45 -07:00
time.c davinci: timers: use clk_get_rate() 2009-04-27 09:49:36 -07:00
usb.c davinci: add arch_ioremap() which uses existing static mappings 2009-04-23 09:31:09 -07:00