diff --git a/arch/powerpc/cpu/mpc85xx/cmd_errata.c b/arch/powerpc/cpu/mpc85xx/cmd_errata.c
index 7e4cc036408f7bcac761678fe98bb7ff542f9f69..bc7e5e36e2eb5de0eb135fa7551d02a6945d113a 100644
--- a/arch/powerpc/cpu/mpc85xx/cmd_errata.c
+++ b/arch/powerpc/cpu/mpc85xx/cmd_errata.c
@@ -127,6 +127,9 @@ static int do_errata(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 #endif
 #ifdef CONFIG_SYS_FSL_ERRATUM_A004510
 	puts("Work-around for Erratum A004510 enabled\n");
+#endif
+#ifdef CONFIG_SYS_FSL_ERRATUM_SRIO_A004034
+	puts("Work-around for Erratum SRIO-A004034 enabled\n");
 #endif
 	return 0;
 }
diff --git a/arch/powerpc/cpu/mpc8xxx/srio.c b/arch/powerpc/cpu/mpc8xxx/srio.c
index 0cb65b32e48919f2a38cebec329389be8db3dcf1..e7ff59a1ca963aa06eb8574630135ee649f7e024 100644
--- a/arch/powerpc/cpu/mpc8xxx/srio.c
+++ b/arch/powerpc/cpu/mpc8xxx/srio.c
@@ -22,6 +22,7 @@
 #include <asm/fsl_law.h>
 #include <asm/fsl_serdes.h>
 #include <asm/fsl_srio.h>
+#include <asm/errno.h>
 
 #define SRIO_PORT_ACCEPT_ALL 0x10000001
 #define SRIO_IB_ATMU_AR 0x80f55000
@@ -52,6 +53,185 @@
 #error "No defines for DEVDISR_SRIO"
 #endif
 
+#ifdef CONFIG_SYS_FSL_ERRATUM_SRIO_A004034
+/*
+ * Erratum A-004034
+ * Affects: SRIO
+ * Description: During port initialization, the SRIO port performs
+ * lane synchronization (detecting valid symbols on a lane) and
+ * lane alignment (coordinating multiple lanes to receive valid data
+ * across lanes). Internal errors in lane synchronization and lane
+ * alignment may cause failure to achieve link initialization at
+ * the configured port width.
+ * An SRIO port configured as a 4x port may see one of these scenarios:
+ * 1. One or more lanes fails to achieve lane synchronization. Depending
+ * on which lanes fail, this may result in downtraining from 4x to 1x
+ * on lane 0, 4x to 1x on lane R (redundant lane).
+ * 2. The link may fail to achieve lane alignment as a 4x, even though
+ * all 4 lanes achieve lane synchronization, and downtrain to a 1x.
+ * An SRIO port configured as a 1x port may fail to complete port
+ * initialization (PnESCSR[PU] never deasserts) because of scenario 1.
+ * Impact: SRIO port may downtrain to 1x, or may fail to complete
+ * link initialization. Once a port completes link initialization
+ * successfully, it will operate normally.
+ */
+static int srio_erratum_a004034(u8 port)
+{
+	serdes_corenet_t *srds_regs;
+	u32 conf_lane;
+	u32 init_lane;
+	int idx, first, last;
+	u32 i;
+	unsigned long long end_tick;
+	struct ccsr_rio *srio_regs = (void *)CONFIG_SYS_FSL_SRIO_ADDR;
+
+	srds_regs = (void *)(CONFIG_SYS_FSL_CORENET_SERDES_ADDR);
+	conf_lane = (in_be32((void *)&srds_regs->srdspccr0)
+			>> (12 - port * 4)) & 0x3;
+	init_lane = (in_be32((void *)&srio_regs->lp_serial
+			.port[port].pccsr) >> 27) & 0x7;
+
+	/*
+	 * Start a counter set to ~2 ms after the SERDES reset is
+	 * complete (SERDES SRDSBnRSTCTL[RST_DONE]=1 for n
+	 * corresponding to the SERDES bank/PLL for the SRIO port).
+	 */
+	 if (in_be32((void *)&srds_regs->bank[0].rstctl)
+		& SRDS_RSTCTL_RSTDONE) {
+		/*
+		 * Poll the port uninitialized status (SRIO PnESCSR[PO]) until
+		 * PO=1 or the counter expires. If the counter expires, the
+		 * port has failed initialization: go to recover steps. If PO=1
+		 * and the desired port width is 1x, go to normal steps. If
+		 * PO = 1 and the desired port width is 4x, go to recover steps.
+		 */
+		end_tick = usec2ticks(2000) + get_ticks();
+		do {
+			if (in_be32((void *)&srio_regs->lp_serial
+				.port[port].pescsr) & 0x2) {
+				if (conf_lane == 0x1)
+					goto host_ok;
+				else {
+					if (init_lane == 0x2)
+						goto host_ok;
+					else
+						break;
+				}
+			}
+		} while (end_tick > get_ticks());
+
+		/* recover at most 3 times */
+		for (i = 0; i < 3; i++) {
+			/* Set SRIO PnCCSR[PD]=1 */
+			setbits_be32((void *)&srio_regs->lp_serial
+					.port[port].pccsr,
+					0x800000);
+			/*
+			* Set SRIO PnPCR[OBDEN] on the host to
+			* enable the discarding of any pending packets.
+			*/
+			setbits_be32((void *)&srio_regs->impl.port[port].pcr,
+				0x04);
+			/* Wait 50 us */
+			udelay(50);
+			/* Run sync command */
+			isync();
+
+			if (port)
+				first = serdes_get_first_lane(SRIO2);
+			else
+				first = serdes_get_first_lane(SRIO1);
+			if (unlikely(first < 0))
+				return -ENODEV;
+			if (conf_lane == 0x1)
+				last = first;
+			else
+				last = first + 3;
+			/*
+			 * Set SERDES BnGCRm0[RRST]=0 for each SRIO
+			 * bank n and lane m.
+			 */
+			for (idx = first; idx <= last; idx++)
+				clrbits_be32(&srds_regs->lane[idx].gcr0,
+				SRDS_GCR0_RRST);
+			/*
+			 * Read SERDES BnGCRm0 for each SRIO
+			 * bank n and lane m
+			 */
+			for (idx = first; idx <= last; idx++)
+				in_be32(&srds_regs->lane[idx].gcr0);
+			/* Run sync command */
+			isync();
+			/* Wait >= 100 ns */
+			udelay(1);
+			/*
+			 * Set SERDES BnGCRm0[RRST]=1 for each SRIO
+			 * bank n and lane m.
+			 */
+			for (idx = first; idx <= last; idx++)
+				setbits_be32(&srds_regs->lane[idx].gcr0,
+				SRDS_GCR0_RRST);
+			/*
+			 * Read SERDES BnGCRm0 for each SRIO
+			 * bank n and lane m
+			 */
+			for (idx = first; idx <= last; idx++)
+				in_be32(&srds_regs->lane[idx].gcr0);
+			/* Run sync command */
+			isync();
+			/* Wait >= 300 ns */
+			udelay(1);
+
+			/* Write 1 to clear all bits in SRIO PnSLCSR */
+			out_be32((void *)&srio_regs->impl.port[port].slcsr,
+				0xffffffff);
+			/* Clear SRIO PnPCR[OBDEN] on the host */
+			clrbits_be32((void *)&srio_regs->impl.port[port].pcr,
+				0x04);
+			/* Set SRIO PnCCSR[PD]=0 */
+			clrbits_be32((void *)&srio_regs->lp_serial
+				.port[port].pccsr,
+				0x800000);
+			/* Wait >= 24 ms */
+			udelay(24000);
+			/* Poll the state of the port again */
+			init_lane =
+				(in_be32((void *)&srio_regs->lp_serial
+					.port[port].pccsr) >> 27) & 0x7;
+			if (in_be32((void *)&srio_regs->lp_serial
+				.port[port].pescsr) & 0x2) {
+				if (conf_lane == 0x1)
+					goto host_ok;
+				else {
+					if (init_lane == 0x2)
+						goto host_ok;
+				}
+			}
+			if (i == 2)
+				return -ENODEV;
+		}
+	} else
+		return -ENODEV;
+
+host_ok:
+	/* Poll PnESCSR[OES] on the host until it is clear */
+	end_tick = usec2ticks(1000000) + get_ticks();
+	do {
+		if (!(in_be32((void *)&srio_regs->lp_serial.port[port].pescsr)
+			& 0x10000)) {
+			out_be32(((void *)&srio_regs->lp_serial
+				.port[port].pescsr), 0xffffffff);
+			out_be32(((void *)&srio_regs->phys_err
+				.port[port].edcsr), 0);
+			out_be32(((void *)&srio_regs->logical_err.ltledcsr), 0);
+			return 0;
+		}
+	} while (end_tick > get_ticks());
+
+	return -ENODEV;
+}
+#endif
+
 void srio_init(void)
 {
 	ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC8xxx_GUTS_ADDR;
@@ -62,6 +242,11 @@ void srio_init(void)
 				law_size_bits(CONFIG_SYS_SRIO1_MEM_SIZE),
 				LAW_TRGT_IF_RIO_1);
 		srio1_used = 1;
+#ifdef CONFIG_SYS_FSL_ERRATUM_SRIO_A004034
+		if (srio_erratum_a004034(0) < 0)
+			printf("SRIO1: enabled but port error\n");
+		else
+#endif
 		printf("SRIO1: enabled\n");
 	} else {
 		printf("SRIO1: disabled\n");
@@ -73,7 +258,13 @@ void srio_init(void)
 				law_size_bits(CONFIG_SYS_SRIO2_MEM_SIZE),
 				LAW_TRGT_IF_RIO_2);
 		srio2_used = 1;
+#ifdef CONFIG_SYS_FSL_ERRATUM_SRIO_A004034
+		if (srio_erratum_a004034(1) < 0)
+			printf("SRIO2: enabled but port error\n");
+		else
+#endif
 		printf("SRIO2: enabled\n");
+
 	} else {
 		printf("SRIO2: disabled\n");
 	}
diff --git a/arch/powerpc/include/asm/config_mpc85xx.h b/arch/powerpc/include/asm/config_mpc85xx.h
index 39a3cdede0a92817676bd726ce83bde104e0aad8..0013ba85ee45a127c5d1d8aba7b52a7c63852290 100644
--- a/arch/powerpc/include/asm/config_mpc85xx.h
+++ b/arch/powerpc/include/asm/config_mpc85xx.h
@@ -338,6 +338,7 @@
 #define CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV	0x10
 #define CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV2	0x11
 #define CONFIG_SYS_FSL_CORENET_SNOOPVEC_COREONLY 0xf0000000
+#define CONFIG_SYS_FSL_ERRATUM_SRIO_A004034
 
 #elif defined(CONFIG_PPC_P3041)
 #define CONFIG_MAX_CPUS			4
@@ -367,6 +368,7 @@
 #define CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV	0x10
 #define CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV2	0x11
 #define CONFIG_SYS_FSL_CORENET_SNOOPVEC_COREONLY 0xf0000000
+#define CONFIG_SYS_FSL_ERRATUM_SRIO_A004034
 
 #elif defined(CONFIG_PPC_P4080) /* also supports P4040 */
 #define CONFIG_MAX_CPUS			8
@@ -406,6 +408,7 @@
 #define CONFIG_SYS_FSL_ERRATUM_A004510
 #define CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV	0x20
 #define CONFIG_SYS_FSL_CORENET_SNOOPVEC_COREONLY 0xff000000
+#define CONFIG_SYS_FSL_ERRATUM_SRIO_A004034
 
 #elif defined(CONFIG_PPC_P5020) /* also supports P5010 */
 #define CONFIG_MAX_CPUS			2
@@ -432,6 +435,7 @@
 #define CONFIG_SYS_FSL_ERRATUM_A004510
 #define CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV	0x10
 #define CONFIG_SYS_FSL_CORENET_SNOOPVEC_COREONLY 0xc0000000
+#define CONFIG_SYS_FSL_ERRATUM_SRIO_A004034
 
 #elif defined(CONFIG_BSC9131)
 #define CONFIG_MAX_CPUS			1