[U-Boot] [PATCH 1/3 v2] fsl/ddr: Revise erratum a009942 and clean related erratum
- add additional function erratum_a009942_check_cpo to check if the board needs tuning CPO calibration for optimal setting. - move ERRATUM_A009942(with revision to check cpo_sample option) from fsl_ddr_gen4.c to ctrl_regs.c for reuse on all DDR4/DDR3 parts. - move ERRATUM_A008378 from fsl_ddr_gen4.c to ctrl_regs.c - remove obsolete ERRATUM_A004934 which is replaced with ERRATUM_A009942.
Signed-off-by: Shengzhou Liu Shengzhou.Liu@nxp.com --- v2: fix a typo
arch/arm/cpu/armv8/fsl-layerscape/cpu.c | 7 +- arch/powerpc/cpu/mpc85xx/cpu_init.c | 6 +- arch/powerpc/include/asm/config_mpc85xx.h | 2 - board/freescale/ls1021aqds/ls1021aqds.c | 6 +- drivers/ddr/fsl/ctrl_regs.c | 104 +++++++++++++++++++++++++++++- drivers/ddr/fsl/fsl_ddr_gen4.c | 23 ------- drivers/ddr/fsl/mpc85xx_ddr_gen3.c | 3 - include/fsl_ddr.h | 2 + include/fsl_ddr_sdram.h | 3 +- 9 files changed, 121 insertions(+), 35 deletions(-)
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/cpu.c b/arch/arm/cpu/armv8/fsl-layerscape/cpu.c index b7a2e0c..19de15e 100644 --- a/arch/arm/cpu/armv8/fsl-layerscape/cpu.c +++ b/arch/arm/cpu/armv8/fsl-layerscape/cpu.c @@ -25,6 +25,9 @@ #ifdef CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT #include <asm/armv8/sec_firmware.h> #endif +#ifdef CONFIG_SYS_FSL_DDR +#include <fsl_ddr.h> +#endif
DECLARE_GLOBAL_DATA_PTR;
@@ -400,7 +403,9 @@ int arch_early_init_r(void) #ifdef CONFIG_SYS_FSL_ERRATUM_A009635 erratum_a009635(); #endif - +#if defined(CONFIG_SYS_FSL_ERRATUM_A009942) && defined(CONFIG_SYS_FSL_DDR) + erratum_a009942_check_cpo(); +#endif #ifdef CONFIG_MP #if defined(CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT) && defined(CONFIG_ARMV8_PSCI) /* Check the psci version to determine if the psci is supported */ diff --git a/arch/powerpc/cpu/mpc85xx/cpu_init.c b/arch/powerpc/cpu/mpc85xx/cpu_init.c index 53b3729..c1dbd9c 100644 --- a/arch/powerpc/cpu/mpc85xx/cpu_init.c +++ b/arch/powerpc/cpu/mpc85xx/cpu_init.c @@ -45,7 +45,7 @@ #include <nand.h> #include <errno.h> #endif - +#include <fsl_ddr.h> #include "../../../../drivers/block/fsl_sata.h" #ifdef CONFIG_U_QE #include <fsl_qe.h> @@ -947,6 +947,10 @@ int cpu_init_r(void)
#endif /* CONFIG_SYS_FSL_USB_DUAL_PHY_ENABLE */
+#ifdef CONFIG_SYS_FSL_ERRATUM_A009942 + erratum_a009942_check_cpo(); +#endif + #ifdef CONFIG_FMAN_ENET fman_enet_init(); #endif diff --git a/arch/powerpc/include/asm/config_mpc85xx.h b/arch/powerpc/include/asm/config_mpc85xx.h index 6d845e8..1e62a9c 100644 --- a/arch/powerpc/include/asm/config_mpc85xx.h +++ b/arch/powerpc/include/asm/config_mpc85xx.h @@ -681,7 +681,6 @@ #define CONFIG_SYS_FSL_USB_DUAL_PHY_ENABLE #define CONFIG_SYS_FSL_USB_INTERNAL_UTMI_PHY #define CONFIG_SYS_FSL_ERRATUM_A004468 -#define CONFIG_SYS_FSL_ERRATUM_A_004934 #define CONFIG_SYS_FSL_ERRATUM_A005871 #define CONFIG_SYS_FSL_ERRATUM_A006379 #define CONFIG_SYS_FSL_ERRATUM_A007186 @@ -720,7 +719,6 @@ #define CONFIG_SYS_FSL_TBCLK_DIV 16 #define CONFIG_SYS_FSL_PCIE_COMPAT "fsl,qoriq-pcie-v2.4" #define CONFIG_SYS_FSL_USB1_PHY_ENABLE -#define CONFIG_SYS_FSL_ERRATUM_A_004934 #define CONFIG_SYS_FSL_ERRATUM_A005871 #define CONFIG_SYS_FSL_ERRATUM_A006379 #define CONFIG_SYS_FSL_ERRATUM_A007186 diff --git a/board/freescale/ls1021aqds/ls1021aqds.c b/board/freescale/ls1021aqds/ls1021aqds.c index 4eb38a7..79078d2 100644 --- a/board/freescale/ls1021aqds/ls1021aqds.c +++ b/board/freescale/ls1021aqds/ls1021aqds.c @@ -22,7 +22,7 @@ #include <spl.h> #include <fsl_devdis.h> #include <fsl_validate.h> - +#include <fsl_ddr.h> #include "../common/sleep.h" #include "../common/qixis.h" #include "ls1021aqds_qixis.h" @@ -433,7 +433,9 @@ int board_init(void) #ifdef CONFIG_SYS_FSL_ERRATUM_A010315 erratum_a010315(); #endif - +#ifdef CONFIG_SYS_FSL_ERRATUM_A009942 + erratum_a009942_check_cpo(); +#endif major = get_soc_major_rev(); if (major == SOC_MAJOR_VER_1_0) { /* Set CCI-400 control override register to diff --git a/drivers/ddr/fsl/ctrl_regs.c b/drivers/ddr/fsl/ctrl_regs.c index 24fd366..656de2c 100644 --- a/drivers/ddr/fsl/ctrl_regs.c +++ b/drivers/ddr/fsl/ctrl_regs.c @@ -5,14 +5,14 @@ */
/* - * Generic driver for Freescale DDR/DDR2/DDR3 memory controller. + * Generic driver for Freescale DDR/DDR2/DDR3/DDR4 memory controller. * Based on code from spd_sdram.c * Author: James Yang [at freescale.com] */
#include <common.h> #include <fsl_ddr_sdram.h> - +#include <fsl_errata.h> #include <fsl_ddr.h> #include <fsl_immap.h> #include <asm/io.h> @@ -2305,6 +2305,9 @@ compute_fsl_memctl_config_regs(const unsigned int ctrl_num, unsigned int wrlvl_en; unsigned int ip_rev = 0; unsigned int unq_mrs_en = 0; +#ifdef CONFIG_SYS_FSL_ERRATUM_A009942 + unsigned int ddr_freq; +#endif int cs_en = 1;
memset(ddr, 0, sizeof(fsl_ddr_cfg_regs_t)); @@ -2526,5 +2529,102 @@ compute_fsl_memctl_config_regs(const unsigned int ctrl_num, ddr->debug[2] |= 0x00000200; /* set bit 22 */ #endif
+#if defined(CONFIG_SYS_FSL_ERRATUM_A008378) && defined(CONFIG_SYS_FSL_DDRC_GEN4) + /* Erratum applies when accumulated ECC is used, or DBI is enabled */ +#define IS_ACC_ECC_EN(v) ((v) & 0x4) +#define IS_DBI(v) ((((v) >> 12) & 0x3) == 0x2) + if (has_erratum_a008378()) { + if (IS_ACC_ECC_EN(ddr->ddr_sdram_cfg) || + IS_DBI(ddr->ddr_sdram_cfg_3)) + ddr->debug[28] |= (0x9 << 20); + } +#endif + +#ifdef CONFIG_SYS_FSL_ERRATUM_A009942 + /* the POR value of debug_29 register is zero */ + ddr_freq = get_ddr_freq(ctrl_num) / 1000000; + if (ddr_freq <= 1333) + ddr->debug[28] |= 0x0080006a; + else if (ddr_freq <= 1600) + ddr->debug[28] |= 0x0070006f; + else if (ddr_freq <= 1867) + ddr->debug[28] |= 0x00700076; + else if (ddr_freq <= 2133) + ddr->debug[28] |= 0x0060007b; + if (popts->cpo_sample) + ddr->debug[28] = (ddr->debug[28] & 0xffffff00) | + popts->cpo_sample; +#endif + return check_fsl_memctl_config_regs(ddr); } + +#ifdef CONFIG_SYS_FSL_ERRATUM_A009942 +/* + * This additional workaround of A009942 checks the condition to determine if + * the CPO value set by the existing A009942 workaround needs to be updated. + * If need, print a warning to prompt user reconfigure DDR debug_29[24:31] with + * expected optimal value, the optimal value is highly board dependent. + */ +void erratum_a009942_check_cpo(void) +{ + struct ccsr_ddr __iomem *ddr = + (struct ccsr_ddr __iomem *)(CONFIG_SYS_FSL_DDR_ADDR); + u32 cpo, cpo_e, cpo_o, cpo_target, cpo_optimal; + u32 min_cpo = 0, max_cpo = 0; + u32 sdram_cfg, i, tmp, lanes, ddr_type; + bool update_cpo = false, has_ecc = false; + + sdram_cfg = ddr_in32(&ddr->sdram_cfg); + if (sdram_cfg & SDRAM_CFG_32_BE) + lanes = 4; + else if (sdram_cfg & SDRAM_CFG_16_BE) + lanes = 2; + else + lanes = 8; + + if (sdram_cfg & SDRAM_CFG_ECC_EN) + has_ecc = true; + + /* determine the maximum and minimum CPO values */ + for (i = 9; i < 9 + lanes / 2; i++) { + cpo = ddr_in32(&ddr->debug[i]); + cpo_e = cpo >> 24; + cpo_o = (cpo >> 8) & 0xff; + tmp = min(cpo_e, cpo_o); + if (tmp < min_cpo) + min_cpo = tmp; + tmp = max(cpo_e, cpo_o); + if (tmp > max_cpo) + max_cpo = tmp; + } + + if (has_ecc) { + cpo = ddr_in32(&ddr->debug[13]); + cpo = cpo >> 24; + if (cpo < min_cpo) + min_cpo = cpo; + if (cpo > max_cpo) + max_cpo = cpo; + } + + cpo_target = ddr_in32(&ddr->debug[28]) & 0xff; + cpo_optimal = ((max_cpo + min_cpo) >> 1) + 0x27; + debug("cpo_optimal = 0x%x, cpo_target = 0x%x\n", cpo_optimal, + cpo_target); + debug("max_cpo = 0x%x, min_cpo = 0x%x\n", max_cpo, min_cpo); + + ddr_type = (sdram_cfg & SDRAM_CFG_SDRAM_TYPE_MASK) >> + SDRAM_CFG_SDRAM_TYPE_SHIFT; + if (ddr_type == SDRAM_TYPE_DDR4) + update_cpo = (min_cpo + 0x3b) < cpo_target ? true : false; + else if (ddr_type == SDRAM_TYPE_DDR3) + update_cpo = (min_cpo + 0x3f) < cpo_target ? true : false; + + if (update_cpo) { + printf("WARN: This board needs to optimize debug_29, pls set "); + printf("'popts->cpo_sample = 0x%x' in <board>/ddr.c\n", + cpo_optimal); + } +} +#endif diff --git a/drivers/ddr/fsl/fsl_ddr_gen4.c b/drivers/ddr/fsl/fsl_ddr_gen4.c index 042af09..2a5066a 100644 --- a/drivers/ddr/fsl/fsl_ddr_gen4.c +++ b/drivers/ddr/fsl/fsl_ddr_gen4.c @@ -230,16 +230,6 @@ void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs, ddr_out32(&ddr->debug[i], regs->debug[i]); } } -#ifdef CONFIG_SYS_FSL_ERRATUM_A008378 - /* Erratum applies when accumulated ECC is used, or DBI is enabled */ -#define IS_ACC_ECC_EN(v) ((v) & 0x4) -#define IS_DBI(v) ((((v) >> 12) & 0x3) == 0x2) - if (has_erratum_a008378()) { - if (IS_ACC_ECC_EN(regs->ddr_sdram_cfg) || - IS_DBI(regs->ddr_sdram_cfg_3)) - ddr_setbits32(&ddr->debug[28], 0x9 << 20); - } -#endif
#ifdef CONFIG_SYS_FSL_ERRATUM_A008511 /* Part 1 of 2 */ @@ -277,19 +267,6 @@ void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs, ddr_out32(&ddr->debug[25], temp32); #endif
-#ifdef CONFIG_SYS_FSL_ERRATUM_A009942 - ddr_freq = get_ddr_freq(ctrl_num) / 1000000; - tmp = ddr_in32(&ddr->debug[28]); - if (ddr_freq <= 1333) - ddr_out32(&ddr->debug[28], tmp | 0x0080006a); - else if (ddr_freq <= 1600) - ddr_out32(&ddr->debug[28], tmp | 0x0070006f); - else if (ddr_freq <= 1867) - ddr_out32(&ddr->debug[28], tmp | 0x00700076); - else if (ddr_freq <= 2133) - ddr_out32(&ddr->debug[28], tmp | 0x0060007b); -#endif - #ifdef CONFIG_SYS_FSL_ERRATUM_A010165 ddr_freq = get_ddr_freq(ctrl_num) / 1000000; if ((ddr_freq > 1900) && (ddr_freq < 2300)) { diff --git a/drivers/ddr/fsl/mpc85xx_ddr_gen3.c b/drivers/ddr/fsl/mpc85xx_ddr_gen3.c index 653b7f0..1bfb9d4 100644 --- a/drivers/ddr/fsl/mpc85xx_ddr_gen3.c +++ b/drivers/ddr/fsl/mpc85xx_ddr_gen3.c @@ -174,9 +174,6 @@ void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs, out_be32(&ddr->debug[i], regs->debug[i]); } } -#ifdef CONFIG_SYS_FSL_ERRATUM_A_004934 - out_be32(&ddr->debug[28], 0x30003000); -#endif
#ifdef CONFIG_SYS_FSL_ERRATUM_DDR_A003474 out_be32(&ddr->debug[12], 0x00000015); diff --git a/include/fsl_ddr.h b/include/fsl_ddr.h index 3351acd..0c3be0e 100644 --- a/include/fsl_ddr.h +++ b/include/fsl_ddr.h @@ -138,4 +138,6 @@ int fsl_ddr_get_dimm_params(dimm_params_t *pdimm, void update_spd_address(unsigned int ctrl_num, unsigned int slot, unsigned int *addr); + +void erratum_a009942_check_cpo(void); #endif diff --git a/include/fsl_ddr_sdram.h b/include/fsl_ddr_sdram.h index 36bd9d7..1404c57 100644 --- a/include/fsl_ddr_sdram.h +++ b/include/fsl_ddr_sdram.h @@ -374,7 +374,8 @@ typedef struct memctl_options_s { unsigned int additive_latency_override_value;
unsigned int clk_adjust; /* */ - unsigned int cpo_override; + unsigned int cpo_override; /* override timing_cfg_2[CPO]*/ + unsigned int cpo_sample; /* optimize debug_29[24:31] */ unsigned int write_data_delay; /* DQS adjust */
unsigned int cswl_override;
participants (1)
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Shengzhou Liu