Commit Graph

4 Commits

Author SHA1 Message Date
Matthias Kaehlcke
18ba012b9b edb93xx: Fix SDRAM initialization
edb93xx: Fix SDRAM initialization by issuing a precharge all command before
forcing the precharge and select mode register update mode before programming
the mode registers. Write to the SDRAM banks in order to force a precharge,
reading causes the edb93xx boards to hang

Signed-off-by: Matthias Kaehlcke <matthias@kaehlcke.net>
2010-03-07 12:36:35 -06:00
Alessandro Rubini
39a9142203 edb93xx: enable the uart in devicecfg register
printf goes to uart1, but it will block forever waiting for
busy to go off unless the uart is enabled first.

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>
2010-02-12 12:31:54 -06:00
Alessandro Rubini
822bd70db4 edb93xx: change calculation un early_udelay.h
Previous code compiled with gcc-4.2.2 makes a call to
__aeabi_uidiv to divide by 20. As a side effect it was
not inline any more, and so sdram_cfg used the stack
as well, but this is early code that has no stack yet.
The patch explicitly removes the division, so no stack is used.

The calculation of the counter calls a division by 20

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>
2010-02-12 12:31:54 -06:00
Matthias Kaehlcke
cf3c142ee4 Add support for EDB93xx boards
Added support for the following EDB93xx boards:

EDB9301
EDB9302
EDB9302A
EDB9307
EDB9307A
EDB93012
EDB9315
EDB9315A

Signed-off-by: Matthias Kaehlcke <matthias@kaehlcke.net>
2010-02-12 12:31:54 -06:00