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-rw-r--r--arch/powerpc/cpu/mpc85xx/cmd_errata.c48
-rw-r--r--arch/powerpc/include/asm/config_mpc85xx.h1
-rw-r--r--arch/powerpc/include/asm/immap_85xx.h2
3 files changed, 50 insertions, 1 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/cmd_errata.c b/arch/powerpc/cpu/mpc85xx/cmd_errata.c
index ccfad56..7d38e1c 100644
--- a/arch/powerpc/cpu/mpc85xx/cmd_errata.c
+++ b/arch/powerpc/cpu/mpc85xx/cmd_errata.c
@@ -24,6 +24,7 @@
#include <command.h>
#include <linux/compiler.h>
#include <asm/processor.h>
+#include "fsl_corenet_serdes.h"
#ifdef CONFIG_SYS_FSL_ERRATUM_A004849
/*
@@ -84,6 +85,49 @@ static void check_erratum_a4849(uint32_t svr)
}
#endif
+#ifdef CONFIG_SYS_FSL_ERRATUM_A004580
+/*
+ * This work-around is implemented in PBI, so just check to see if the
+ * work-around was actually applied. To do this, we check for specific data
+ * at specific addresses in the SerDes register block.
+ *
+ * The work-around says that for each SerDes lane, write BnTTLCRy0 =
+ * 0x1B00_0001, Register 2 = 0x0088_0000, and Register 3 = 0x4000_0000.
+
+ */
+static void check_erratum_a4580(uint32_t svr)
+{
+ const serdes_corenet_t __iomem *srds_regs =
+ (void *)CONFIG_SYS_FSL_CORENET_SERDES_ADDR;
+ unsigned int lane;
+
+ for (lane = 0; lane < SRDS_MAX_LANES; lane++) {
+ if (serdes_lane_enabled(lane)) {
+ const struct serdes_lane __iomem *srds_lane =
+ &srds_regs->lane[serdes_get_lane_idx(lane)];
+
+ /*
+ * Verify that the values we were supposed to write in
+ * the PBI are actually there. Also, the lower 15
+ * bits of res4[3] should be the same as the upper 15
+ * bits of res4[1].
+ */
+ if ((in_be32(&srds_lane->ttlcr0) != 0x1b000001) ||
+ (in_be32(&srds_lane->res4[1]) != 0x880000) ||
+ (in_be32(&srds_lane->res4[3]) != 0x40000044)) {
+ printf("Work-around for Erratum A004580 is "
+ "not enabled\n");
+ return;
+ }
+ }
+ }
+
+ /* Everything matches, so the erratum work-around was applied */
+
+ printf("Work-around for Erratum A004580 enabled\n");
+}
+#endif
+
static int do_errata(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
#ifdef CONFIG_SYS_FSL_ERRATUM_NMG_CPU_A011
@@ -200,6 +244,10 @@ static int do_errata(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
/* This work-around is implemented in PBI, so just check for it */
check_erratum_a4849(svr);
#endif
+#ifdef CONFIG_SYS_FSL_ERRATUM_A004580
+ /* This work-around is implemented in PBI, so just check for it */
+ check_erratum_a4580(svr);
+#endif
return 0;
}
diff --git a/arch/powerpc/include/asm/config_mpc85xx.h b/arch/powerpc/include/asm/config_mpc85xx.h
index d1c1e06..1ccc5c5 100644
--- a/arch/powerpc/include/asm/config_mpc85xx.h
+++ b/arch/powerpc/include/asm/config_mpc85xx.h
@@ -426,6 +426,7 @@
#define CONFIG_SYS_FSL_CORENET_SNOOPVEC_COREONLY 0xff000000
#define CONFIG_SYS_FSL_ERRATUM_SRIO_A004034
#define CONFIG_SYS_FSL_ERRATUM_A004849
+#define CONFIG_SYS_FSL_ERRATUM_A004580
#elif defined(CONFIG_PPC_P5020) /* also supports P5010 */
#define CONFIG_SYS_PPC64 /* 64-bit core */
diff --git a/arch/powerpc/include/asm/immap_85xx.h b/arch/powerpc/include/asm/immap_85xx.h
index 54aa71b..b61f592 100644
--- a/arch/powerpc/include/asm/immap_85xx.h
+++ b/arch/powerpc/include/asm/immap_85xx.h
@@ -2619,7 +2619,7 @@ typedef struct serdes_corenet {
#define SRDS_PCCR2_RST_XGMII1 0x00800000
#define SRDS_PCCR2_RST_XGMII2 0x00400000
u32 res5[197];
- struct {
+ struct serdes_lane {
u32 gcr0; /* General Control Register 0 */
#define SRDS_GCR0_RRST 0x00400000
#define SRDS_GCR0_1STLANE 0x00010000