Dear Peter Tyser,
In message 1247269570-11406-1-git-send-email-ptyser@xes-inc.com you wrote:
Previously, non-e500 architectures only unlocked their data cache which was used as early RAM when booting to Linux using the "bootm" command. This change causes all PPC boards with CONFIG_SYS_INIT_RAM_LOCK defined to unlock their data cache during U-Boot's initialization. This improves U-Boot performance and provides a common cache state when booting to different OSes.
Signed-off-by: Peter Tyser ptyser@xes-inc.com
I've tested this on 86xx boards, it'd be great if someone could test on 83xx and 74xx/7xx. 85xx boards should not be affected by this change.
This change assumes http://thread.gmane.org/gmane.comp.boot-loaders.u-boot/63423 has already been applied, or the lib/ppc patches in the diffs below can be changed to lib_ppc.
Peter
lib/ppc/board.c | 6 +++--- lib/ppc/bootm.c | 9 --------- 2 files changed, 3 insertions(+), 12 deletions(-)
Applied.
Hm... tested on TQM834x - it's still booting, but flash recognition stopped working:
OLD:
U-Boot 2008.10-00085-g13f9496-dirty (Oct 22 2008 - 00:28:08) MPC83XX
Reset Status:
CPU: e300c1, MPC8349E, Rev: 1.1 at 533.328 MHz, CSB: 266.664 MHz Board: TQM834x PCI1: 32 bit, 33 MHz I2C: ready DTT: 1 is 32 C DRAM: 256 MB FLASH: 32 MB PCI: Bus Dev VenId DevId Class Int 00 0b 104c ac55 0607 ff 00 0b 104c ac55 0607 ff ...
NEW:
U-Boot 2009.06-00513-g982adfc (Jul 23 2009 - 20:46:38) MPC83XX
Reset Status: Software Hard, External/Internal Soft, External/Internal Hard
CPU: e300c1, MPC8349E, Rev: 1.1 at 533.328 MHz, CSB: 266.664 MHz Board: TQM834x PCI1: 32 bit, 33 MHz I2C: ready DRAM: 256 MB FLASH: ## Unknown FLASH on Bank 1 - Size = 0x02000000 = 0 MB 32 MB PCI: Bus Dev VenId DevId Class Int 00 0b 104c ac55 0607 ff 00 0b 104c ac55 0607 ff => fli
Bank # 1: missing or unknown FLASH type
Probably because of caching?
I can't do anything right now as I cannot reprogram the flash any more. Need to attach a BDI when I'm bck in the office tomorrow morning.
Best regards,
Wolfgang Denk