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| author | Mike Frysinger <vapier@gentoo.org> | 2009-04-04 08:40:13 -0400 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2009-04-06 17:37:48 -0400 |
| commit | 8ef929afa43c77c9573caa57c6e17a97a33775c0 (patch) | |
| tree | 06f917337ccae6ecda40a1dc43118bba7f2ca3a4 /cpu/blackfin | |
| parent | c2e07449f546fb375289cdac1a608fdc20357873 (diff) | |
| download | blackbird-obmc-uboot-8ef929afa43c77c9573caa57c6e17a97a33775c0.tar.gz blackbird-obmc-uboot-8ef929afa43c77c9573caa57c6e17a97a33775c0.zip | |
Blackfin: add check for anomaly 05000362
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>
Diffstat (limited to 'cpu/blackfin')
| -rw-r--r-- | cpu/blackfin/initcode.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/cpu/blackfin/initcode.c b/cpu/blackfin/initcode.c index 062cbb80b8..aba00e0fb9 100644 --- a/cpu/blackfin/initcode.c +++ b/cpu/blackfin/initcode.c @@ -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) { |
