Add SDRAM driver for Agilex SoC.
Signed-off-by: Tien Fong Chee tien.fong.chee@intel.com Signed-off-by: Ley Foon Tan ley.foon.tan@intel.com --- drivers/ddr/altera/Kconfig | 6 +- drivers/ddr/altera/Makefile | 1 + drivers/ddr/altera/sdram_agilex.c | 158 ++++++++++++++++++++++++++++++ drivers/ddr/altera/sdram_common.c | 1 + drivers/ddr/altera/sdram_common.h | 1 + 5 files changed, 164 insertions(+), 3 deletions(-) create mode 100644 drivers/ddr/altera/sdram_agilex.c
diff --git a/drivers/ddr/altera/Kconfig b/drivers/ddr/altera/Kconfig index 2b1c1be3b5..8f590dc5f6 100644 --- a/drivers/ddr/altera/Kconfig +++ b/drivers/ddr/altera/Kconfig @@ -1,8 +1,8 @@ config SPL_ALTERA_SDRAM bool "SoCFPGA DDR SDRAM driver in SPL" depends on SPL - depends on TARGET_SOCFPGA_GEN5 || TARGET_SOCFPGA_ARRIA10 || TARGET_SOCFPGA_STRATIX10 - select RAM if TARGET_SOCFPGA_GEN5 || TARGET_SOCFPGA_STRATIX10 - select SPL_RAM if TARGET_SOCFPGA_GEN5 || TARGET_SOCFPGA_STRATIX10 + depends on TARGET_SOCFPGA_GEN5 || TARGET_SOCFPGA_ARRIA10 || TARGET_SOCFPGA_STRATIX10 || TARGET_SOCFPGA_AGILEX + select RAM if TARGET_SOCFPGA_GEN5 || TARGET_SOCFPGA_STRATIX10 || TARGET_SOCFPGA_AGILEX + select SPL_RAM if TARGET_SOCFPGA_GEN5 || TARGET_SOCFPGA_STRATIX10 || TARGET_SOCFPGA_AGILEX help Enable DDR SDRAM controller for the SoCFPGA devices. diff --git a/drivers/ddr/altera/Makefile b/drivers/ddr/altera/Makefile index 09454461a9..b3b48948bf 100644 --- a/drivers/ddr/altera/Makefile +++ b/drivers/ddr/altera/Makefile @@ -10,4 +10,5 @@ ifdef CONFIG_$(SPL_)ALTERA_SDRAM obj-$(CONFIG_TARGET_SOCFPGA_GEN5) += sdram_gen5.o sequencer.o obj-$(CONFIG_TARGET_SOCFPGA_ARRIA10) += sdram_arria10.o obj-$(CONFIG_TARGET_SOCFPGA_STRATIX10) += sdram_common.o sdram_s10.o +obj-$(CONFIG_TARGET_SOCFPGA_AGILEX) += sdram_common.o sdram_agilex.o endif diff --git a/drivers/ddr/altera/sdram_agilex.c b/drivers/ddr/altera/sdram_agilex.c new file mode 100644 index 0000000000..20913ccfa7 --- /dev/null +++ b/drivers/ddr/altera/sdram_agilex.c @@ -0,0 +1,158 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2019 Intel Corporation <www.intel.com> + * + */ + +#include <common.h> +#include <dm.h> +#include <errno.h> +#include <div64.h> +#include <fdtdec.h> +#include <ram.h> +#include <reset.h> +#include "sdram_common.h" +#include <wait_bit.h> +#include <asm/arch/firewall.h> +#include <asm/arch/reset_manager.h> +#include <asm/arch/system_manager.h> +#include <asm/io.h> +#include <linux/sizes.h> + +DECLARE_GLOBAL_DATA_PTR; + +int sdram_mmr_init_full(struct udevice *dev) +{ + struct altera_sdram_platdata *plat = dev->platdata; + struct altera_sdram_priv *priv = dev_get_priv(dev); + u32 i; + int ret; + phys_size_t hw_size; + bd_t bd = {0}; + + /* Ensure HMC clock is running */ + if (poll_hmc_clock_status()) { + debug("DDR: Error as HMC clock was not running\n"); + return -EPERM; + } + + /* Trying 3 times to do a calibration */ + for (i = 0; i < 3; i++) { + ret = wait_for_bit_le32((const void *)(plat->hmc + + DDRCALSTAT), + DDR_HMC_DDRCALSTAT_CAL_MSK, true, 1000, + false); + if (!ret) + break; + + emif_reset(plat); + } + + if (ret) { + puts("DDR: Error as SDRAM calibration failed\n"); + return -EPERM; + } + debug("DDR: Calibration success\n"); + + /* + * Configure the DDR IO size [0xFFCFB008] + * niosreserve0: Used to indicate DDR width & + * bit[7:0] = Number of data bits (bit[6:5] 0x01=32bit, 0x10=64bit) + * bit[8] = 1 if user-mode OCT is present + * bit[9] = 1 if warm reset compiled into EMIF Cal Code + * bit[10] = 1 if warm reset is on during generation in EMIF Cal + * niosreserve1: IP ADCDS version encoded as 16 bit value + * bit[2:0] = Variant (0=not special,1=FAE beta, 2=Customer beta, + * 3=EAP, 4-6 are reserved) + * bit[5:3] = Service Pack # (e.g. 1) + * bit[9:6] = Minor Release # + * bit[14:10] = Major Release # + */ + /* Configure DDR IO size x16, x32 and x64 mode */ + u32 update_value; + + update_value = hmc_readl(plat, NIOSRESERVED0); + update_value = (update_value & 0xFF) >> 5; + + /* Configure DDR data rate 0-HAlf-rate 1-Quarter-rate */ + update_value |= (hmc_readl(plat, CTRLCFG3) & 0x4) >> 1; + hmc_ecc_writel(plat, update_value, DDRIOCTRL); + + /* Copy values MMR IOHMC dramaddrw to HMC adp DRAMADDRWIDTH */ + hmc_ecc_writel(plat, hmc_readl(plat, DRAMADDRW), DRAMADDRWIDTH); + + /* assigning the SDRAM size */ + phys_size_t size = sdram_calculate_size(plat); + + if (size <= 0) + hw_size = PHYS_SDRAM_1_SIZE; + else + hw_size = size; + + /* Get bank configuration from devicetree */ + ret = fdtdec_decode_ram_size(gd->fdt_blob, NULL, 0, NULL, + (phys_size_t *)&gd->ram_size, &bd); + if (ret) { + puts("DDR: Failed to decode memory node\n"); + return -1; + } + + if (gd->ram_size != hw_size) + printf("DDR: Warning: DRAM size from device tree mismatch with hardware.\n"); + + printf("DDR: %lld MiB\n", gd->ram_size >> 20); + + /* This enables nonsecure access to DDR */ + /* mpuregion0addr_limit */ + FW_MPU_DDR_SCR_WRITEL(gd->ram_size - 1, + FW_MPU_DDR_SCR_MPUREGION0ADDR_LIMIT); + FW_MPU_DDR_SCR_WRITEL(0x1F, FW_MPU_DDR_SCR_MPUREGION0ADDR_LIMITEXT); + + /* nonmpuregion0addr_limit */ + FW_MPU_DDR_SCR_WRITEL(gd->ram_size - 1, + FW_MPU_DDR_SCR_NONMPUREGION0ADDR_LIMIT); + + /* Enable mpuregion0enable and nonmpuregion0enable */ + FW_MPU_DDR_SCR_WRITEL(MPUREGION0_ENABLE | NONMPUREGION0_ENABLE, + FW_MPU_DDR_SCR_EN_SET); + + u32 ctrlcfg1 = hmc_readl(plat, CTRLCFG1); + + /* Enable or disable the DDR ECC */ + if (CTRLCFG1_CFG_CTRL_EN_ECC(ctrlcfg1)) { + setbits_le32(plat->hmc + ECCCTRL1, + (DDR_HMC_ECCCTL_AWB_CNT_RST_SET_MSK | + DDR_HMC_ECCCTL_CNT_RST_SET_MSK | + DDR_HMC_ECCCTL_ECC_EN_SET_MSK)); + clrbits_le32(plat->hmc + ECCCTRL1, + (DDR_HMC_ECCCTL_AWB_CNT_RST_SET_MSK | + DDR_HMC_ECCCTL_CNT_RST_SET_MSK)); + setbits_le32(plat->hmc + ECCCTRL2, + (DDR_HMC_ECCCTL2_RMW_EN_SET_MSK | + DDR_HMC_ECCCTL2_AWB_EN_SET_MSK)); + setbits_le32(plat->hmc + ERRINTEN, + DDR_HMC_ERRINTEN_DERRINTEN_EN_SET_MSK); + + /* Enable non-secure writes to HMC Adapter for SDRAM ECC */ + writel(FW_HMC_ADAPTOR_MPU_MASK, FW_HMC_ADAPTOR_REG_ADDR); + + if (!cpu_has_been_warmreset()) + sdram_init_ecc_bits(&bd); + } else { + clrbits_le32(plat->hmc + ECCCTRL1, + (DDR_HMC_ECCCTL_AWB_CNT_RST_SET_MSK | + DDR_HMC_ECCCTL_CNT_RST_SET_MSK | + DDR_HMC_ECCCTL_ECC_EN_SET_MSK)); + clrbits_le32(plat->hmc + ECCCTRL2, + (DDR_HMC_ECCCTL2_RMW_EN_SET_MSK | + DDR_HMC_ECCCTL2_AWB_EN_SET_MSK)); + } + + sdram_size_check(&bd); + + priv->info.base = bd.bi_dram[0].start; + priv->info.size = gd->ram_size; + + debug("DDR: HMC init success\n"); + return 0; +} diff --git a/drivers/ddr/altera/sdram_common.c b/drivers/ddr/altera/sdram_common.c index 24ab5f932b..d3a45c0ae7 100644 --- a/drivers/ddr/altera/sdram_common.c +++ b/drivers/ddr/altera/sdram_common.c @@ -292,6 +292,7 @@ static struct ram_ops altera_sdram_ops = {
static const struct udevice_id altera_sdram_ids[] = { { .compatible = "altr,sdr-ctl-s10" }, + { .compatible = "altr,sdr-ctl-agilex" }, { /* sentinel */ } };
diff --git a/drivers/ddr/altera/sdram_common.h b/drivers/ddr/altera/sdram_common.h index 814ab52be3..89cea3d003 100644 --- a/drivers/ddr/altera/sdram_common.h +++ b/drivers/ddr/altera/sdram_common.h @@ -69,6 +69,7 @@ struct altera_sdram_platdata { /* HMC MMR IO48 registers */ #define CTRLCFG0 0x28 #define CTRLCFG1 0x2c +#define CTRLCFG3 0x34 #define DRAMTIMING0 0x50 #define CALTIMING0 0x7c #define CALTIMING1 0x80