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authorKumar Gala <galak@kernel.crashing.org>2009-09-08 13:46:46 -0500
committerKumar Gala <galak@kernel.crashing.org>2009-09-08 13:47:18 -0500
commitc348322ac7f76318295cf25ffab2cc2a4900a234 (patch)
tree9636a9be13dcf857a371df20c837ecf1c899e2a7 /cpu
parent21170c80a83f1e60ce7f6f83005e06a5c2d15a8e (diff)
ppc/85xx: Clean up do_reset
There is no reason to do a run time check for e500 v1 based cores to determine if we have the GUTs RSTCR facility. Only the first generation of PQ3 parts (MPC8540/41/55/60) do not have it. So checking to see if we are e500 v2 would miss future parts (like e500mc). Just change this to be ifdef'd based on CONFIG_MPC85{40,41,55,60}. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'cpu')
-rw-r--r--cpu/mpc85xx/cpu.c25
1 files changed, 9 insertions, 16 deletions
diff --git a/cpu/mpc85xx/cpu.c b/cpu/mpc85xx/cpu.c
index 8b3810f5b00..bdd9ee4c833 100644
--- a/cpu/mpc85xx/cpu.c
+++ b/cpu/mpc85xx/cpu.c
@@ -153,27 +153,15 @@ int checkcpu (void)
int do_reset (cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[])
{
- uint pvr;
- uint ver;
+/* Everything after the first generation of PQ3 parts has RSTCR */
+#if defined(CONFIG_MPC8540) || defined(CONFIG_MPC8541) || \
+ defined(CONFIG_MPC8555) || defined(CONFIG_MPC8560)
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 *)(CONFIG_SYS_IMMR + 0xE00B0);
- *rstcr = 0x2; /* HRESET_REQ */
- udelay(100);
- }
-
/*
- * Fallthrough if the code above failed
* Initiate hard reset in debug control register DBCR0
- * Make sure MSR[DE] = 1
+ * Make sure MSR[DE] = 1. This only resets the core.
*/
-
msr = mfmsr ();
msr |= MSR_DE;
mtmsr (msr);
@@ -181,6 +169,11 @@ int do_reset (cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[])
val = mfspr(DBCR0);
val |= 0x70000000;
mtspr(DBCR0,val);
+#else
+ volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
+ out_be32(&gur->rstcr, 0x2); /* HRESET_REQ */
+ udelay(100);
+#endif
return 1;
}