[U-Boot] [PATCH v4 13/17] ddr: altera: agilex: Add SDRAM driver for Agilex
Ley Foon Tan
ley.foon.tan at intel.com
Thu Sep 12 10:11:01 UTC 2019
Add SDRAM driver for Agilex SoC.
Signed-off-by: Tien Fong Chee <tien.fong.chee at intel.com>
Signed-off-by: Ley Foon Tan <ley.foon.tan at intel.com>
---
v4:
- Fixed checkpatch warnings
v3:
- Use sdmmc_soc64.*
- Change compatible string to use "intel" (intel,sdr-ctl-agilex).
- Improve error handing if DDR size mismatched.
---
drivers/ddr/altera/Kconfig | 6 +-
drivers/ddr/altera/Makefile | 1 +
drivers/ddr/altera/sdram_agilex.c | 168 ++++++++++++++++++++++++++++++
drivers/ddr/altera/sdram_soc64.h | 1 +
4 files changed, 173 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 eb8da13b7d..39dfee5d5a 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_soc64.o sdram_s10.o
+obj-$(CONFIG_TARGET_SOCFPGA_AGILEX) += sdram_soc64.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..cc7679a6e4
--- /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);
+
+ /* 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_soc64.h b/drivers/ddr/altera/sdram_soc64.h
index 7d018e76d8..7b25a80ae2 100644
--- a/drivers/ddr/altera/sdram_soc64.h
+++ b/drivers/ddr/altera/sdram_soc64.h
@@ -65,6 +65,7 @@ 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
--
2.19.0
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