From 96629cbabdb727d4a5e62542deefc01d498db6dc Mon Sep 17 00:00:00 2001 From: Zang Roy-r61911 Date: Tue, 5 Dec 2006 16:42:30 +0800 Subject: [PATCH] u-boot: Fix e500 v2 core reset bug The following patch fixes the e500 v2 core reset bug. For e500 v2 core, a new reset control register is added to reset the processor. Signed-off-by: Roy Zang --- cpu/mpc85xx/cpu.c | 21 +++++++++++++++------ 1 file changed, 15 insertions(+), 6 deletions(-) diff --git a/cpu/mpc85xx/cpu.c b/cpu/mpc85xx/cpu.c index 0507c47e6..2fe4f2abb 100644 --- a/cpu/mpc85xx/cpu.c +++ b/cpu/mpc85xx/cpu.c @@ -140,16 +140,25 @@ int checkcpu (void) int do_reset (cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[]) { + uint pvr; + uint ver; + 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{ /* * Initiate hard reset in debug control register DBCR0 * Make sure MSR[DE] = 1 */ - unsigned long val; - - val = mfspr(DBCR0); - val |= 0x70000000; - mtspr(DBCR0,val); - + unsigned long val; + val = mfspr(DBCR0); + val |= 0x70000000; + mtspr(DBCR0,val); + } return 1; }