diff options
Diffstat (limited to 'drivers/ddr/altera/sdram_agilex.c')
| -rw-r--r-- | drivers/ddr/altera/sdram_agilex.c | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/drivers/ddr/altera/sdram_agilex.c b/drivers/ddr/altera/sdram_agilex.c new file mode 100644 index 0000000000..0cbcd14056 --- /dev/null +++ b/drivers/ddr/altera/sdram_agilex.c @@ -0,0 +1,168 @@ +// 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_soc64.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 + * 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); + 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 -ENXIO; + } + + if (gd->ram_size != hw_size) { + printf("DDR: Warning: DRAM size from device tree (%lld MiB)\n", + gd->ram_size >> 20); + printf(" mismatch with hardware (%lld MiB).\n", + hw_size >> 20); + } + + if (gd->ram_size > hw_size) { + printf("DDR: Error: DRAM size from device tree is greater\n"); + printf(" than hardware size.\n"); + hang(); + } + + 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); + + 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)); + } + + /* Enable non-secure reads/writes to HMC Adapter for SDRAM ECC */ + writel(FW_HMC_ADAPTOR_MPU_MASK, FW_HMC_ADAPTOR_REG_ADDR); + + 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; +} |