From: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Date: Thu, 15 Aug 2013 01:31:47 +0000 (+0800)
Subject: powerpc/sec: Add workaround for SEC A-003571
X-Git-Tag: v2013.10-rc2~9^2~2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=424bf94273b2cd0171eca7ed5619b211f1b96d8f;p=kernel%2Fu-boot.git

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>
---

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;
diff --git a/arch/powerpc/include/asm/config_mpc85xx.h b/arch/powerpc/include/asm/config_mpc85xx.h
index e1fc0f7..d748cb6 100644
--- a/arch/powerpc/include/asm/config_mpc85xx.h
+++ b/arch/powerpc/include/asm/config_mpc85xx.h
@@ -131,6 +131,7 @@
 #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
 
 /* P1011 is single core version of P1020 */