Barrier transactions from CCI400 need to be disabled till the DDR is configured, otherwise it may lead to system hang. The patch adds workaround to fix the erratum.
Signed-off-by: Shengzhou Liu <[email protected]> --- arch/arm/cpu/armv8/fsl-layerscape/soc.c | 18 ++++++++++++++++++ arch/arm/include/asm/arch-fsl-layerscape/config.h | 1 + board/freescale/ls1043aqds/ddr.c | 21 +++++++++++++++++++++ board/freescale/ls1043aqds/ls1043aqds.c | 8 -------- board/freescale/ls1043ardb/ddr.c | 22 ++++++++++++++++++++++ board/freescale/ls1043ardb/ls1043ardb.c | 8 -------- include/fsl_ddr_sdram.h | 4 ++++ 7 files changed, 66 insertions(+), 16 deletions(-) diff --git a/arch/arm/cpu/armv8/fsl-layerscape/soc.c b/arch/arm/cpu/armv8/fsl-layerscape/soc.c index 213ce3a..816bf1b 100644 --- a/arch/arm/cpu/armv8/fsl-layerscape/soc.c +++ b/arch/arm/cpu/armv8/fsl-layerscape/soc.c @@ -12,6 +12,8 @@ #include <asm/io.h> #include <asm/global_data.h> #include <asm/arch-fsl-layerscape/config.h> +#include <fsl_ddr_sdram.h> +#include <fsl_ddr.h> #ifdef CONFIG_CHAIN_OF_TRUST #include <fsl_validate.h> #endif @@ -231,6 +233,21 @@ static void erratum_a009660(void) #endif } +static void erratum_a008850(void) +{ +#ifdef CONFIG_SYS_FSL_ERRATUM_A008850 + /* part 1 of 2 */ + struct ccsr_cci400 __iomem *cci = (void *)CONFIG_SYS_CCI400_ADDR; + struct ccsr_ddr __iomem *ddr = (void *)CONFIG_SYS_FSL_DDR_ADDR; + + /* disables propagation of barrier transactions to DDRC from CCI400 */ + out_le32(&cci->ctrl_ord, CCI400_CTRLORD_TERM_BARRIER); + + /* disable the re-ordering in DDRC */ + ddr_out32(&ddr->eor, DDR_EOR_RD_REOD_DIS | DDR_EOR_WD_REOD_DIS); +#endif +} + void fsl_lsch2_early_init_f(void) { struct ccsr_cci400 *cci = (struct ccsr_cci400 *)CONFIG_SYS_CCI400_ADDR; @@ -255,6 +272,7 @@ void fsl_lsch2_early_init_f(void) CCI400_DVM_MESSAGE_REQ_EN | CCI400_SNOOP_REQ_EN); /* Erratum */ + erratum_a008850(); erratum_a009929(); erratum_a009660(); } diff --git a/arch/arm/include/asm/arch-fsl-layerscape/config.h b/arch/arm/include/asm/arch-fsl-layerscape/config.h index b0c112b..6ec7e50 100644 --- a/arch/arm/include/asm/arch-fsl-layerscape/config.h +++ b/arch/arm/include/asm/arch-fsl-layerscape/config.h @@ -176,6 +176,7 @@ #define GICD_BASE 0x01401000 #define GICC_BASE 0x01402000 +#define CONFIG_SYS_FSL_ERRATUM_A008850 #define CONFIG_SYS_FSL_ERRATUM_A009663 #define CONFIG_SYS_FSL_ERRATUM_A009929 #define CONFIG_SYS_FSL_ERRATUM_A009942 diff --git a/board/freescale/ls1043aqds/ddr.c b/board/freescale/ls1043aqds/ddr.c index 3d3c533..07d61f5 100644 --- a/board/freescale/ls1043aqds/ddr.c +++ b/board/freescale/ls1043aqds/ddr.c @@ -7,6 +7,8 @@ #include <common.h> #include <fsl_ddr_sdram.h> #include <fsl_ddr_dimm_params.h> +#include <fsl_ddr.h> +#include <asm/io.h> #ifdef CONFIG_FSL_DEEP_SLEEP #include <fsl_sleep.h> #endif @@ -105,6 +107,24 @@ found: #endif } +static void erratum_a008850(void) +{ +#ifdef CONFIG_SYS_FSL_ERRATUM_A008850 + /* part 2 of 2 */ + struct ccsr_cci400 __iomem *cci = (void *)CONFIG_SYS_CCI400_ADDR; + struct ccsr_ddr __iomem *ddr = (void *)CONFIG_SYS_FSL_DDR_ADDR; + u32 tmp; + + /* enable propagation of barrier transactions to DDRC from CCI400 */ + out_le32(&cci->ctrl_ord, CCI400_CTRLORD_EN_BARRIER); + + /* enable the re-ordering in DDRC */ + tmp = ddr_in32(&ddr->eor); + tmp &= ~(DDR_EOR_RD_REOD_DIS | DDR_EOR_WD_REOD_DIS); + ddr_out32(&ddr->eor, tmp); +#endif +} + phys_size_t initdram(int board_type) { phys_size_t dram_size; @@ -116,6 +136,7 @@ phys_size_t initdram(int board_type) dram_size = fsl_ddr_sdram(); #endif + erratum_a008850(); #ifdef CONFIG_FSL_DEEP_SLEEP fsl_dp_ddr_restore(); diff --git a/board/freescale/ls1043aqds/ls1043aqds.c b/board/freescale/ls1043aqds/ls1043aqds.c index a72fe52..4ccfc79 100644 --- a/board/freescale/ls1043aqds/ls1043aqds.c +++ b/board/freescale/ls1043aqds/ls1043aqds.c @@ -305,14 +305,6 @@ int misc_init_r(void) int board_init(void) { - struct ccsr_cci400 *cci = (struct ccsr_cci400 *) - CONFIG_SYS_CCI400_ADDR; - - /* Set CCI-400 control override register to enable barrier - * transaction */ - out_le32(&cci->ctrl_ord, - CCI400_CTRLORD_EN_BARRIER); - select_i2c_ch_pca9547(I2C_MUX_CH_DEFAULT); board_retimer_init(); diff --git a/board/freescale/ls1043ardb/ddr.c b/board/freescale/ls1043ardb/ddr.c index 11bc0f2..9aa9d18 100644 --- a/board/freescale/ls1043ardb/ddr.c +++ b/board/freescale/ls1043ardb/ddr.c @@ -6,6 +6,8 @@ #include <common.h> #include <fsl_ddr_sdram.h> +#include <fsl_ddr.h> +#include <asm/io.h> #include <fsl_ddr_dimm_params.h> #include "ddr.h" #ifdef CONFIG_FSL_DEEP_SLEEP @@ -167,6 +169,24 @@ int fsl_ddr_get_dimm_params(dimm_params_t *pdimm, } #endif +static void erratum_a008850(void) +{ +#ifdef CONFIG_SYS_FSL_ERRATUM_A008850 + /* part 2 of 2 */ + struct ccsr_cci400 __iomem *cci = (void *)CONFIG_SYS_CCI400_ADDR; + struct ccsr_ddr __iomem *ddr = (void *)CONFIG_SYS_FSL_DDR_ADDR; + u32 tmp; + + /* enable propagation of barrier transactions to DDRC from CCI400 */ + out_le32(&cci->ctrl_ord, CCI400_CTRLORD_EN_BARRIER); + + /* enable the re-ordering in DDRC */ + tmp = ddr_in32(&ddr->eor); + tmp &= ~(DDR_EOR_RD_REOD_DIS | DDR_EOR_WD_REOD_DIS); + ddr_out32(&ddr->eor, tmp); +#endif +} + phys_size_t initdram(int board_type) { phys_size_t dram_size; @@ -177,6 +197,8 @@ phys_size_t initdram(int board_type) #else dram_size = fsl_ddr_sdram_size(); #endif + erratum_a008850(); + #ifdef CONFIG_FSL_DEEP_SLEEP fsl_dp_ddr_restore(); #endif diff --git a/board/freescale/ls1043ardb/ls1043ardb.c b/board/freescale/ls1043ardb/ls1043ardb.c index 66d974a..1e2ef83 100644 --- a/board/freescale/ls1043ardb/ls1043ardb.c +++ b/board/freescale/ls1043ardb/ls1043ardb.c @@ -82,14 +82,6 @@ int board_early_init_f(void) int board_init(void) { - struct ccsr_cci400 *cci = (struct ccsr_cci400 *)CONFIG_SYS_CCI400_ADDR; - - /* - * Set CCI-400 control override register to enable barrier - * transaction - */ - out_le32(&cci->ctrl_ord, CCI400_CTRLORD_EN_BARRIER); - #ifdef CONFIG_FSL_IFC init_final_memctl_regs(); #endif diff --git a/include/fsl_ddr_sdram.h b/include/fsl_ddr_sdram.h index cf316a4..44ae7fb 100644 --- a/include/fsl_ddr_sdram.h +++ b/include/fsl_ddr_sdram.h @@ -146,6 +146,10 @@ typedef struct ddr4_spd_eeprom_s generic_spd_eeprom_t; #define WR_DATA_DELAY_SHIFT 10 #endif +/* DDR_EOR register */ +#define DDR_EOR_RD_REOD_DIS 0x07000000 +#define DDR_EOR_WD_REOD_DIS 0x00100000 + /* DDR_MD_CNTL */ #define MD_CNTL_MD_EN 0x80000000 #define MD_CNTL_CS_SEL_CS0 0x00000000 -- 2.1.0.27.g96db324 _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
