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 --- arch/powerpc/cpu/mpc85xx/cmd_errata.c | 4 ++++ arch/powerpc/cpu/mpc85xx/cpu_init.c | 10 +++++++++- arch/powerpc/include/asm/config_mpc85xx.h | 1 + 3 files changed, 14 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/cpu/mpc85xx/cmd_errata.c b/arch/powerpc/cpu/mpc85xx/cmd_errata.c index e6d1023..2e1fc06 100644 --- a/arch/powerpc/cpu/mpc85xx/cmd_errata.c +++ b/arch/powerpc/cpu/mpc85xx/cmd_errata.c @@ -348,6 +348,10 @@ 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 return 0; }
diff --git a/arch/powerpc/cpu/mpc85xx/cpu_init.c b/arch/powerpc/cpu/mpc85xx/cpu_init.c index 7b81f5d..be09009 100644 --- a/arch/powerpc/cpu/mpc85xx/cpu_init.c +++ b/arch/powerpc/cpu/mpc85xx/cpu_init.c @@ -444,7 +444,9 @@ 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) /* @@ -634,6 +636,12 @@ 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; diff --git a/arch/powerpc/include/asm/config_mpc85xx.h b/arch/powerpc/include/asm/config_mpc85xx.h index 86c2598..cc6e405 100644 --- a/arch/powerpc/include/asm/config_mpc85xx.h +++ b/arch/powerpc/include/asm/config_mpc85xx.h @@ -149,6 +149,7 @@ #define CONFIG_SYS_FSL_USB_INTERNAL_UTMI_PHY #define CONFIG_SYS_FSL_ERRATUM_IFC_A002769 #define CONFIG_SYS_FSL_ERRATUM_P1010_A003549 +#define CONFIG_SYS_FSL_ERRATUM_SEC_A003571 #define CONFIG_SYS_FSL_ERRATUM_IFC_A003399 #define CONFIG_SYS_FSL_ERRATUM_I2C_A004447 #define CONFIG_SYS_FSL_ISBC_VER 1