Commit ead056bc authored by Graeme Russ's avatar Graeme Russ Committed by Wolfgang Denk

Added MMCR reset functionality

Reset function specific to AMD SC520 microcontroller - Is more of a
'hard reset' that the triple fault.

Requires CONFIG_SYS_RESET_SC520 to be defined in config

I would have liked to add this to a new file (cpu/i386/sc520/reset.c)
but ld requires that a object file in a library arhive MUST contain
at least one function which does not override a weak function (and is
called from outside the object file) in order for that object file to
be extracted from the archive. This would be the only function on the
new file, and hence, will never get linked in.
Signed-off-by: default avatarGraeme Russ <>
parent 3f5f18d1
......@@ -507,4 +507,14 @@ u8 ssi_rx_byte(void)
return read_mmcr_byte(SC520_SSIRCV);
void reset_cpu(ulong addr)
printf("Resetting using SC520 MMCR\n");
/* Write a '1' to the SYS_RST of the RESCFG MMCR */
write_mmcr_word(SC520_RESCFG, 0x0001);
#endif /* CONFIG_SC520 */
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