From c6d35ad46b423e12c80b2616b5898357dcd0b835 Mon Sep 17 00:00:00 2001 From: Sebastian Huber Date: Wed, 21 Nov 2012 09:46:58 +0100 Subject: bsp/mpc55xx: Errata e4396 for e200z7 --- c/src/lib/libbsp/powerpc/mpc55xxevb/startup/start.S | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/c/src/lib/libbsp/powerpc/mpc55xxevb/startup/start.S b/c/src/lib/libbsp/powerpc/mpc55xxevb/startup/start.S index 77c9d845a6..e8ae3c0db4 100644 --- a/c/src/lib/libbsp/powerpc/mpc55xxevb/startup/start.S +++ b/c/src/lib/libbsp/powerpc/mpc55xxevb/startup/start.S @@ -170,9 +170,17 @@ _start: ori r3, r3, 0x4000 mtspr HID0, r3 - /* Enable branch prediction */ - LWI r3, FSL_EIS_BUCSR_BBFI | FSL_EIS_BUCSR_BPEN + /* + * Enable branch prediction. + * + * Errata e4396: e200z7: Erroneous Address Fetch + * + * The propose workaround does not work. + */ +#if MPC55XX_CHIP_FAMILY != 567 + LWI r3, FSL_EIS_BUCSR_BBFI | FSL_EIS_BUCSR_BALLOC_ALL | FSL_EIS_BUCSR_BPRED_NOT_TAKEN | FSL_EIS_BUCSR_BPEN mtspr FSL_EIS_BUCSR, r3 +#endif #endif /* MPC55XX_NEEDS_LOW_LEVEL_INIT */ -- cgit v1.2.3