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 --- cpu/mpc85xx/cpu.c | 25 +++++++++---------------- 1 files changed, 9 insertions(+), 16 deletions(-)
diff --git a/cpu/mpc85xx/cpu.c b/cpu/mpc85xx/cpu.c index 8b3810f..bdd9ee4 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; }