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authorShengzhou Liu <Shengzhou.Liu@freescale.com>2013-08-15 09:31:47 +0800
committerYork Sun <yorksun@freescale.com>2013-08-20 10:47:07 -0700
commit424bf94273b2cd0171eca7ed5619b211f1b96d8f (patch)
treefad1af231d9c332afef5915d68d6b45c02762adc /arch/powerpc/cpu
parente1a2a3401956f546ac18cdc58716860286868425 (diff)
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powerpc/sec: Add workaround for SEC A-003571
Multiple read/write transactions initiated by security engine may cause system to hang. Workaround: set MCFGR[AXIPIPE] to 0 to avoid hang. Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com> Acked-by: York Sun <yorksun@freescale.com>
Diffstat (limited to 'arch/powerpc/cpu')
-rw-r--r--arch/powerpc/cpu/mpc85xx/cmd_errata.c4
-rw-r--r--arch/powerpc/cpu/mpc85xx/cpu_init.c10
2 files changed, 13 insertions, 1 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/cmd_errata.c b/arch/powerpc/cpu/mpc85xx/cmd_errata.c
index cbb443f..8a2a3ee 100644
--- a/arch/powerpc/cpu/mpc85xx/cmd_errata.c
+++ b/arch/powerpc/cpu/mpc85xx/cmd_errata.c
@@ -245,6 +245,10 @@ static int do_errata(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
#ifdef CONFIG_SYS_FSL_ERRATUM_A006593
puts("Work-around for Erratum A006593 enabled\n");
#endif
+#ifdef CONFIG_SYS_FSL_ERRATUM_SEC_A003571
+ if (IS_SVR_REV(svr, 1, 0))
+ puts("Work-around for Erratum A003571 enabled\n");
+#endif
#ifdef CONFIG_SYS_FSL_ERRATUM_A005812
puts("Work-around for Erratum A-005812 enabled\n");
#endif
diff --git a/arch/powerpc/cpu/mpc85xx/cpu_init.c b/arch/powerpc/cpu/mpc85xx/cpu_init.c
index c6e09ca..6036333 100644
--- a/arch/powerpc/cpu/mpc85xx/cpu_init.c
+++ b/arch/powerpc/cpu/mpc85xx/cpu_init.c
@@ -357,7 +357,9 @@ int cpu_init_r(void)
extern int spin_table_compat;
const char *spin;
#endif
-
+#ifdef CONFIG_SYS_FSL_ERRATUM_SEC_A003571
+ ccsr_sec_t __iomem *sec = (void *)CONFIG_SYS_FSL_SEC_ADDR;
+#endif
#if defined(CONFIG_SYS_P4080_ERRATUM_CPU22) || \
defined(CONFIG_SYS_FSL_ERRATUM_NMG_CPU_A011)
/*
@@ -548,6 +550,12 @@ skip_l2:
fsl_serdes_init();
#endif
+#ifdef CONFIG_SYS_FSL_ERRATUM_SEC_A003571
+#define MCFGR_AXIPIPE 0x000000f0
+ if (IS_SVR_REV(svr, 1, 0))
+ clrbits_be32(&sec->mcfgr, MCFGR_AXIPIPE);
+#endif
+
#ifdef CONFIG_SYS_FSL_ERRATUM_A005871
if (IS_SVR_REV(svr, 1, 0)) {
int i;