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Blackfin: add check for anomaly 05000362

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DESCRIPTION:
The column address width settings for banks 2 and 3 are misconnected in
the SDRAM controller.  Accesses to bank 2 will result in an error if the
Column Address Width for bank 3 (EB3CAW ) is not set to be the same as
that of bank 2.

WORKAROUND:
If using bank 2, make sure that banks 2 and 3 have the same column address
width settings in the EBIU_SDBCTL register.  This must be the case
regardless of whether or not bank 3 is enabled.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
This commit is contained in:
Mike Frysinger 2009-04-04 08:40:13 -04:00
parent c2e07449f5
commit 8ef929afa4
1 changed files with 9 additions and 0 deletions
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9
cpu/blackfin/initcode.c
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@ -246,6 +246,15 @@ static inline void serial_putc(char c)
#endif
#endif
/* Conflicting Column Address Widths Causes SDRAM Errors:
* EB2CAW and EB3CAW must be the same
*/
#if ANOMALY_05000362
# if ((CONFIG_EBIU_SDBCTL_VAL & 0x30000000) >> 8) != (CONFIG_EBIU_SDBCTL_VAL & 0x00300000)
# error "Anomaly 05000362: EB2CAW and EB3CAW must be the same"
# endif
#endif
BOOTROM_CALLED_FUNC_ATTR
void initcode(ADI_BOOT_DATA *bootstruct)
{