fsl-layerscape: Add workaround for PCIe erratum A010315

As the access to serders protocol unselected PCIe controller will
hang. So disable the R/W permission to unselected PCIe controller
including its CCSR, IO space and memory space according to the
serders protocol field of RCW.

Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>

6 files changed, 41 insertions, 0 deletions

diff --git a/arch/arm/cpu/armv7/ls102xa/soc.c b/arch/arm/cpu/armv7/ls102xa/soc.c
index 4c93ab7..31f00cb 100644
--- a/arch/arm/cpu/armv7/ls102xa/soc.c
+++ b/arch/arm/cpu/armv7/ls102xa/soc.c
@@ -7,6 +7,7 @@
 #include <common.h>
 #include <asm/arch/clock.h>
 #include <asm/io.h>
+#include <asm/arch/fsl_serdes.h>
 #include <asm/arch/immap_ls102xa.h>
 #include <asm/arch/ls102xa_soc.h>
 #include <asm/arch/ls102xa_stream_id.h>
@@ -59,6 +60,19 @@ unsigned int get_soc_major_rev(void)
 	return major;
 }
 
+#ifdef CONFIG_SYS_FSL_ERRATUM_A010315
+void erratum_a010315(void)
+{
+	int i;
+
+	for (i = PCIE1; i <= PCIE2; i++)
+		if (!is_serdes_configured(i)) {
+			debug("PCIe%d: disabled all R/W permission!\n", i);
+			set_pcie_ns_access(i, 0);
+		}
+}
+#endif
+
 int arch_soc_init(void)
 {
 	struct ccsr_scfg *scfg = (struct ccsr_scfg *)CONFIG_SYS_FSL_SCFG_ADDR;
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/soc.c b/arch/arm/cpu/armv8/fsl-layerscape/soc.c
index 2b39a02..43c4aa5 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/soc.c
+++ b/arch/arm/cpu/armv8/fsl-layerscape/soc.c
@@ -8,11 +8,14 @@
 #include <fsl_ifc.h>
 #include <ahci.h>
 #include <scsi.h>
+#include <asm/arch/fsl_serdes.h>
 #include <asm/arch/soc.h>
 #include <asm/io.h>
 #include <asm/global_data.h>
 #include <asm/arch-fsl-layerscape/config.h>
+#ifdef CONFIG_LAYERSCAPE_NS_ACCESS
 #include <fsl_csu.h>
+#endif
 #ifdef CONFIG_SYS_FSL_DDR
 #include <fsl_ddr_sdram.h>
 #include <fsl_ddr.h>
@@ -301,6 +304,19 @@ void erratum_a008850_post(void)
 #endif
 }
 
+#ifdef CONFIG_SYS_FSL_ERRATUM_A010315
+void erratum_a010315(void)
+{
+	int i;
+
+	for (i = PCIE1; i <= PCIE4; i++)
+		if (!is_serdes_configured(i)) {
+			debug("PCIe%d: disabled all R/W permission!\n", i);
+			set_pcie_ns_access(i, 0);
+		}
+}
+#endif
+
 void fsl_lsch2_early_init_f(void)
 {
 	struct ccsr_cci400 *cci = (struct ccsr_cci400 *)CONFIG_SYS_CCI400_ADDR;
diff --git a/arch/arm/include/asm/arch-fsl-layerscape/config.h b/arch/arm/include/asm/arch-fsl-layerscape/config.h
index 5279981..9ccdcfa 100644
--- a/arch/arm/include/asm/arch-fsl-layerscape/config.h
+++ b/arch/arm/include/asm/arch-fsl-layerscape/config.h
@@ -165,6 +165,8 @@
 #define CONFIG_SYS_FSL_SEC_BE
 
 #define CONFIG_SYS_FSL_SRDS_1
+
+#define CONFIG_SYS_FSL_ERRATUM_A010315
 /* SoC related */
 #ifdef CONFIG_LS1043A
 #define CONFIG_MAX_CPUS				4
diff --git a/arch/arm/include/asm/arch-fsl-layerscape/soc.h b/arch/arm/include/asm/arch-fsl-layerscape/soc.h
index 8d4a7ad..4512732 100644
--- a/arch/arm/include/asm/arch-fsl-layerscape/soc.h
+++ b/arch/arm/include/asm/arch-fsl-layerscape/soc.h
@@ -100,6 +100,10 @@ void cpu_name(char *name);
 void erratum_a009635(void);
 #endif
 
+#ifdef CONFIG_SYS_FSL_ERRATUM_A010315
+void erratum_a010315(void);
+#endif
+
 bool soc_has_dp_ddr(void);
 bool soc_has_aiop(void);
 #endif /* _ASM_ARMV8_FSL_LAYERSCAPE_SOC_H_ */
diff --git a/arch/arm/include/asm/arch-ls102xa/config.h b/arch/arm/include/asm/arch-ls102xa/config.h
index 56d8f32..b0bf92e 100644
--- a/arch/arm/include/asm/arch-ls102xa/config.h
+++ b/arch/arm/include/asm/arch-ls102xa/config.h
@@ -129,6 +129,7 @@
 #define CONFIG_USB_MAX_CONTROLLER_COUNT		1
 #define CONFIG_SYS_FSL_ERRATUM_A008378
 #define CONFIG_SYS_FSL_ERRATUM_A009663
+#define CONFIG_SYS_FSL_ERRATUM_A010315
 #define CONFIG_SYS_FSL_MAX_NUM_OF_SEC		1
 #else
 #error SoC not defined
diff --git a/arch/arm/include/asm/arch-ls102xa/ls102xa_soc.h b/arch/arm/include/asm/arch-ls102xa/ls102xa_soc.h
index a354684..9c91354 100644
--- a/arch/arm/include/asm/arch-ls102xa/ls102xa_soc.h
+++ b/arch/arm/include/asm/arch-ls102xa/ls102xa_soc.h
@@ -11,4 +11,8 @@ unsigned int get_soc_major_rev(void);
 int arch_soc_init(void);
 int ls102xa_smmu_stream_id_init(void);
 
+#ifdef CONFIG_SYS_FSL_ERRATUM_A010315
+void erratum_a010315(void);
+#endif
+
 #endif /* __FSL_LS102XA_SOC_H */