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Fixed reset for socrates

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Signed-off-by: Sergei Poselenov <sposelenov@emcraft.com>
This commit is contained in:
Sergei Poselenov 2008-05-08 14:17:08 +02:00 committed by Wolfgang Denk
parent e18575d5f5
commit 793670c3c0
1 changed files with 14 additions and 9 deletions
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23
cpu/mpc85xx/cpu.c
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@ -174,28 +174,33 @@ int do_reset (cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[])
{
uint pvr;
uint ver;
unsigned long val, msr;
pvr = get_pvr();
ver = PVR_VER(pvr);
if (ver & 1){
/* e500 v2 core has reset control register */
volatile unsigned int * rstcr;
rstcr = (volatile unsigned int *)(CFG_IMMR + 0xE00B0);
*rstcr = 0x2; /* HRESET_REQ */
}else{
udelay(100);
}
/*
* Fallthrough if the code above failed
* Initiate hard reset in debug control register DBCR0
* Make sure MSR[DE] = 1
*/
unsigned long val, msr;
msr = mfmsr ();
msr |= MSR_DE;
mtmsr (msr);
msr = mfmsr ();
msr |= MSR_DE;
mtmsr (msr);
val = mfspr(DBCR0);
val |= 0x70000000;
mtspr(DBCR0,val);
val = mfspr(DBCR0);
val |= 0x70000000;
mtspr(DBCR0,val);
}
return 1;
}