Merge branch 'master' of git://git.denx.de/u-boot-socfpga

- Various stratix10, gen5 updates

11 files changed, 396 insertions, 24 deletions

diff --git a/drivers/ddr/altera/Kconfig b/drivers/ddr/altera/Kconfig
index 2b28a97f6e..8f60b56eb8 100644
--- a/drivers/ddr/altera/Kconfig
+++ b/drivers/ddr/altera/Kconfig
@@ -1,5 +1,7 @@
 config ALTERA_SDRAM
 	bool "SoCFPGA DDR SDRAM driver"
 	depends on TARGET_SOCFPGA_GEN5 || TARGET_SOCFPGA_ARRIA10
+	select RAM if TARGET_SOCFPGA_GEN5
+	select SPL_RAM if TARGET_SOCFPGA_GEN5
 	help
 	  Enable DDR SDRAM controller for the SoCFPGA devices.
diff --git a/drivers/ddr/altera/sdram_gen5.c b/drivers/ddr/altera/sdram_gen5.c
index 821060459c..fcd89b619d 100644
--- a/drivers/ddr/altera/sdram_gen5.c
+++ b/drivers/ddr/altera/sdram_gen5.c
@@ -3,14 +3,30 @@
  * Copyright Altera Corporation (C) 2014-2015
  */
 #include <common.h>
+#include <dm.h>
 #include <errno.h>
 #include <div64.h>
+#include <ram.h>
+#include <reset.h>
 #include <watchdog.h>
 #include <asm/arch/fpga_manager.h>
+#include <asm/arch/reset_manager.h>
 #include <asm/arch/sdram.h>
 #include <asm/arch/system_manager.h>
 #include <asm/io.h>
 
+#include "sequencer.h"
+
+#ifdef CONFIG_SPL_BUILD
+
+struct altera_gen5_sdram_priv {
+	struct ram_info info;
+};
+
+struct altera_gen5_sdram_platdata {
+	struct socfpga_sdr *sdr;
+};
+
 struct sdram_prot_rule {
 	u32	sdram_start;	/* SDRAM start address */
 	u32	sdram_end;	/* SDRAM end address */
@@ -26,8 +42,8 @@ struct sdram_prot_rule {
 
 static struct socfpga_system_manager *sysmgr_regs =
 	(struct socfpga_system_manager *)SOCFPGA_SYSMGR_ADDRESS;
-static struct socfpga_sdr_ctrl *sdr_ctrl =
-	(struct socfpga_sdr_ctrl *)SDR_CTRLGRP_ADDRESS;
+
+static unsigned long sdram_calculate_size(struct socfpga_sdr_ctrl *sdr_ctrl);
 
 /**
  * get_errata_rows() - Up the number of DRAM rows to cover entire address space
@@ -104,7 +120,8 @@ static int get_errata_rows(const struct socfpga_sdram_config *cfg)
 }
 
 /* SDRAM protection rules vary from 0-19, a total of 20 rules. */
-static void sdram_set_rule(struct sdram_prot_rule *prule)
+static void sdram_set_rule(struct socfpga_sdr_ctrl *sdr_ctrl,
+			   struct sdram_prot_rule *prule)
 {
 	u32 lo_addr_bits;
 	u32 hi_addr_bits;
@@ -141,7 +158,8 @@ static void sdram_set_rule(struct sdram_prot_rule *prule)
 	writel(0, &sdr_ctrl->prot_rule_rdwr);
 }
 
-static void sdram_get_rule(struct sdram_prot_rule *prule)
+static void sdram_get_rule(struct socfpga_sdr_ctrl *sdr_ctrl,
+			   struct sdram_prot_rule *prule)
 {
 	u32 addr;
 	u32 id;
@@ -172,7 +190,8 @@ static void sdram_get_rule(struct sdram_prot_rule *prule)
 }
 
 static void
-sdram_set_protection_config(const u32 sdram_start, const u32 sdram_end)
+sdram_set_protection_config(struct socfpga_sdr_ctrl *sdr_ctrl,
+			    const u32 sdram_start, const u32 sdram_end)
 {
 	struct sdram_prot_rule rule;
 	int rules;
@@ -185,7 +204,7 @@ sdram_set_protection_config(const u32 sdram_start, const u32 sdram_end)
 
 	for (rules = 0; rules < 20; rules++) {
 		rule.rule = rules;
-		sdram_set_rule(&rule);
+		sdram_set_rule(sdr_ctrl, &rule);
 	}
 
 	/* new rule: accept SDRAM */
@@ -200,13 +219,13 @@ sdram_set_protection_config(const u32 sdram_start, const u32 sdram_end)
 	rule.rule = 0;
 
 	/* set new rule */
-	sdram_set_rule(&rule);
+	sdram_set_rule(sdr_ctrl, &rule);
 
 	/* default rule: reject everything */
 	writel(0x3ff, &sdr_ctrl->protport_default);
 }
 
-static void sdram_dump_protection_config(void)
+static void sdram_dump_protection_config(struct socfpga_sdr_ctrl *sdr_ctrl)
 {
 	struct sdram_prot_rule rule;
 	int rules;
@@ -216,7 +235,7 @@ static void sdram_dump_protection_config(void)
 
 	for (rules = 0; rules < 20; rules++) {
 		rule.rule = rules;
-		sdram_get_rule(&rule);
+		sdram_get_rule(sdr_ctrl, &rule);
 		debug("Rule %d, rules ...\n", rules);
 		debug("    sdram start %x\n", rule.sdram_start);
 		debug("    sdram end   %x\n", rule.sdram_end);
@@ -322,7 +341,8 @@ static u32 sdr_get_addr_rw(const struct socfpga_sdram_config *cfg)
  *
  * This function loads the register values into the SDRAM controller block.
  */
-static void sdr_load_regs(const struct socfpga_sdram_config *cfg)
+static void sdr_load_regs(struct socfpga_sdr_ctrl *sdr_ctrl,
+			  const struct socfpga_sdram_config *cfg)
 {
 	const u32 ctrl_cfg = sdr_get_ctrlcfg(cfg);
 	const u32 dram_addrw = sdr_get_addr_rw(cfg);
@@ -426,7 +446,8 @@ static void sdr_load_regs(const struct socfpga_sdram_config *cfg)
  *
  * Initialize the SDRAM MMR.
  */
-int sdram_mmr_init_full(unsigned int sdr_phy_reg)
+int sdram_mmr_init_full(struct socfpga_sdr_ctrl *sdr_ctrl,
+			unsigned int sdr_phy_reg)
 {
 	const struct socfpga_sdram_config *cfg = socfpga_get_sdram_config();
 	const unsigned int rows =
@@ -436,7 +457,7 @@ int sdram_mmr_init_full(unsigned int sdr_phy_reg)
 
 	writel(rows, &sysmgr_regs->iswgrp_handoff[4]);
 
-	sdr_load_regs(cfg);
+	sdr_load_regs(sdr_ctrl, cfg);
 
 	/* saving this value to SYSMGR.ISWGRP.HANDOFF.FPGA2SDR */
 	writel(cfg->fpgaport_rst, &sysmgr_regs->iswgrp_handoff[3]);
@@ -459,9 +480,10 @@ int sdram_mmr_init_full(unsigned int sdr_phy_reg)
 			SDR_CTRLGRP_STATICCFG_APPLYCFG_MASK,
 			1 << SDR_CTRLGRP_STATICCFG_APPLYCFG_LSB);
 
-	sdram_set_protection_config(0, sdram_calculate_size() - 1);
+	sdram_set_protection_config(sdr_ctrl, 0,
+				    sdram_calculate_size(sdr_ctrl) - 1);
 
-	sdram_dump_protection_config();
+	sdram_dump_protection_config(sdr_ctrl);
 
 	return 0;
 }
@@ -472,7 +494,7 @@ int sdram_mmr_init_full(unsigned int sdr_phy_reg)
  * Calculate SDRAM device size based on SDRAM controller parameters.
  * Size is specified in bytes.
  */
-unsigned long sdram_calculate_size(void)
+static unsigned long sdram_calculate_size(struct socfpga_sdr_ctrl *sdr_ctrl)
 {
 	unsigned long temp;
 	unsigned long row, bank, col, cs, width;
@@ -534,3 +556,94 @@ unsigned long sdram_calculate_size(void)
 
 	return temp;
 }
+
+static int altera_gen5_sdram_ofdata_to_platdata(struct udevice *dev)
+{
+	struct altera_gen5_sdram_platdata *plat = dev->platdata;
+
+	plat->sdr = (struct socfpga_sdr *)devfdt_get_addr_index(dev, 0);
+	if (!plat->sdr)
+		return -ENODEV;
+
+	return 0;
+}
+
+static int altera_gen5_sdram_probe(struct udevice *dev)
+{
+	int ret;
+	unsigned long sdram_size;
+	struct altera_gen5_sdram_platdata *plat = dev->platdata;
+	struct altera_gen5_sdram_priv *priv = dev_get_priv(dev);
+	struct socfpga_sdr_ctrl *sdr_ctrl = &plat->sdr->sdr_ctrl;
+	struct reset_ctl_bulk resets;
+
+	ret = reset_get_bulk(dev, &resets);
+	if (ret) {
+		dev_err(dev, "Can't get reset: %d\n", ret);
+		return -ENODEV;
+	}
+	reset_deassert_bulk(&resets);
+
+	if (sdram_mmr_init_full(sdr_ctrl, 0xffffffff) != 0) {
+		puts("SDRAM init failed.\n");
+		goto failed;
+	}
+
+	debug("SDRAM: Calibrating PHY\n");
+	/* SDRAM calibration */
+	if (sdram_calibration_full(plat->sdr) == 0) {
+		puts("SDRAM calibration failed.\n");
+		goto failed;
+	}
+
+	sdram_size = sdram_calculate_size(sdr_ctrl);
+	debug("SDRAM: %ld MiB\n", sdram_size >> 20);
+
+	/* Sanity check ensure correct SDRAM size specified */
+	if (get_ram_size(0, sdram_size) != sdram_size) {
+		puts("SDRAM size check failed!\n");
+		goto failed;
+	}
+
+	priv->info.base = 0;
+	priv->info.size = sdram_size;
+
+	return 0;
+
+failed:
+	reset_release_bulk(&resets);
+	return -ENODEV;
+}
+
+static int altera_gen5_sdram_get_info(struct udevice *dev,
+				      struct ram_info *info)
+{
+	struct altera_gen5_sdram_priv *priv = dev_get_priv(dev);
+
+	info->base = priv->info.base;
+	info->size = priv->info.size;
+
+	return 0;
+}
+
+static struct ram_ops altera_gen5_sdram_ops = {
+	.get_info = altera_gen5_sdram_get_info,
+};
+
+static const struct udevice_id altera_gen5_sdram_ids[] = {
+	{ .compatible = "altr,sdr-ctl" },
+	{ /* sentinel */ }
+};
+
+U_BOOT_DRIVER(altera_gen5_sdram) = {
+	.name = "altr_sdr_ctl",
+	.id = UCLASS_RAM,
+	.of_match = altera_gen5_sdram_ids,
+	.ops = &altera_gen5_sdram_ops,
+	.ofdata_to_platdata = altera_gen5_sdram_ofdata_to_platdata,
+	.platdata_auto_alloc_size = sizeof(struct altera_gen5_sdram_platdata),
+	.probe = altera_gen5_sdram_probe,
+	.priv_auto_alloc_size = sizeof(struct altera_gen5_sdram_priv),
+};
+
+#endif /* CONFIG_SPL_BUILD */
diff --git a/drivers/ddr/altera/sdram_s10.c b/drivers/ddr/altera/sdram_s10.c
index a48567c109..e4d4a02ca2 100644
--- a/drivers/ddr/altera/sdram_s10.c
+++ b/drivers/ddr/altera/sdram_s10.c
@@ -7,12 +7,14 @@
 #include <common.h>
 #include <errno.h>
 #include <div64.h>
+#include <fdtdec.h>
 #include <asm/io.h>
 #include <wait_bit.h>
 #include <asm/arch/firewall_s10.h>
 #include <asm/arch/sdram_s10.h>
 #include <asm/arch/system_manager.h>
 #include <asm/arch/reset_manager.h>
+#include <linux/sizes.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -21,6 +23,8 @@ static const struct socfpga_system_manager *sysmgr_regs =
 
 #define DDR_CONFIG(A, B, C, R)	(((A) << 24) | ((B) << 16) | ((C) << 8) | (R))
 
+#define PGTABLE_OFF	0x4000
+
 /* The followring are the supported configurations */
 u32 ddr_config[] = {
 	/* DDR_CONFIG(Address order,Bank,Column,Row) */
@@ -134,6 +138,108 @@ static int poll_hmc_clock_status(void)
 				 SYSMGR_HMC_CLK_STATUS_MSK, true, 1000, false);
 }
 
+static void sdram_clear_mem(phys_addr_t addr, phys_size_t size)
+{
+	phys_size_t i;
+
+	if (addr % CONFIG_SYS_CACHELINE_SIZE) {
+		printf("DDR: address 0x%llx is not cacheline size aligned.\n",
+		       addr);
+		hang();
+	}
+
+	if (size % CONFIG_SYS_CACHELINE_SIZE) {
+		printf("DDR: size 0x%llx is not multiple of cacheline size\n",
+		       size);
+		hang();
+	}
+
+	/* Use DC ZVA instruction to clear memory to zeros by a cache line */
+	for (i = 0; i < size; i = i + CONFIG_SYS_CACHELINE_SIZE) {
+		asm volatile("dc zva, %0"
+		     :
+		     : "r"(addr)
+		     : "memory");
+		addr += CONFIG_SYS_CACHELINE_SIZE;
+	}
+}
+
+static void sdram_init_ecc_bits(bd_t *bd)
+{
+	phys_size_t size, size_init;
+	phys_addr_t start_addr;
+	int bank = 0;
+	unsigned int start = get_timer(0);
+
+	icache_enable();
+
+	start_addr = bd->bi_dram[0].start;
+	size = bd->bi_dram[0].size;
+
+	/* Initialize small block for page table */
+	memset((void *)start_addr, 0, PGTABLE_SIZE + PGTABLE_OFF);
+	gd->arch.tlb_addr = start_addr + PGTABLE_OFF;
+	gd->arch.tlb_size = PGTABLE_SIZE;
+	start_addr += PGTABLE_SIZE + PGTABLE_OFF;
+	size -= (PGTABLE_OFF + PGTABLE_SIZE);
+	dcache_enable();
+
+	while (1) {
+		while (size) {
+			size_init = min((phys_addr_t)SZ_1G, (phys_addr_t)size);
+			sdram_clear_mem(start_addr, size_init);
+			size -= size_init;
+			start_addr += size_init;
+			WATCHDOG_RESET();
+		}
+
+		bank++;
+		if (bank >= CONFIG_NR_DRAM_BANKS)
+			break;
+
+		start_addr = bd->bi_dram[bank].start;
+		size = bd->bi_dram[bank].size;
+	}
+
+	dcache_disable();
+	icache_disable();
+
+	printf("SDRAM-ECC: Initialized success with %d ms\n",
+	       (unsigned int)get_timer(start));
+}
+
+static void sdram_size_check(bd_t *bd)
+{
+	phys_size_t total_ram_check = 0;
+	phys_size_t ram_check = 0;
+	phys_addr_t start = 0;
+	int bank;
+
+	/* Sanity check ensure correct SDRAM size specified */
+	debug("DDR: Running SDRAM size sanity check\n");
+
+	for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
+		start = bd->bi_dram[bank].start;
+		while (ram_check < bd->bi_dram[bank].size) {
+			ram_check += get_ram_size((void *)(start + ram_check),
+						 (phys_size_t)SZ_1G);
+		}
+		total_ram_check += ram_check;
+		ram_check = 0;
+	}
+
+	/* If the ram_size is 2GB smaller, we can assume the IO space is
+	 * not mapped in.  gd->ram_size is the actual size of the dram
+	 * not the accessible size.
+	 */
+	if (total_ram_check != gd->ram_size) {
+		puts("DDR: SDRAM size check failed!\n");
+		hang();
+	}
+
+	debug("DDR: SDRAM size check passed!\n");
+}
+
 /**
  * sdram_mmr_init_full() - Function to initialize SDRAM MMR
  *
@@ -144,6 +250,8 @@ int sdram_mmr_init_full(unsigned int unused)
 	u32 update_value, io48_value, ddrioctl;
 	u32 i;
 	int ret;
+	phys_size_t hw_size;
+	bd_t bd = {0};
 
 	/* Enable access to DDR from CPU master */
 	clrbits_le32(CCU_REG_ADDR(CCU_CPU0_MPRT_ADBASE_DDRREG),
@@ -335,9 +443,22 @@ int sdram_mmr_init_full(unsigned int unused)
 	unsigned long long size = sdram_calculate_size();
 	/* If the size is invalid, use default Config size */
 	if (size <= 0)
-		gd->ram_size = PHYS_SDRAM_1_SIZE;
+		hw_size = PHYS_SDRAM_1_SIZE;
 	else
-		gd->ram_size = size;
+		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);
 
 	/* Enable or disable the SDRAM ECC */
 	if (CTRLCFG1_CFG_CTRL_EN_ECC(ctrlcfg1)) {
@@ -351,6 +472,15 @@ int sdram_mmr_init_full(unsigned int unused)
 		setbits_le32(SOCFPGA_SDR_ADDRESS + ECCCTRL2,
 			     (DDR_HMC_ECCCTL2_RMW_EN_SET_MSK |
 			      DDR_HMC_ECCCTL2_AWB_EN_SET_MSK));
+		writel(DDR_HMC_ERRINTEN_INTMASK,
+		       SOCFPGA_SDR_ADDRESS + ERRINTENS);
+
+		/* Enable non-secure writes to HMC Adapter for SDRAM ECC */
+		writel(FW_HMC_ADAPTOR_MPU_MASK, FW_HMC_ADAPTOR_REG_ADDR);
+
+		/* Initialize memory content if not from warm reset */
+		if (!cpu_has_been_warmreset())
+			sdram_init_ecc_bits(&bd);
 	} else {
 		clrbits_le32(SOCFPGA_SDR_ADDRESS + ECCCTRL1,
 			     (DDR_HMC_ECCCTL_AWB_CNT_RST_SET_MSK |
@@ -361,6 +491,8 @@ int sdram_mmr_init_full(unsigned int unused)
 			      DDR_HMC_ECCCTL2_AWB_EN_SET_MSK));
 	}
 
+	sdram_size_check(&bd);
+
 	debug("DDR: HMC init success\n");
 	return 0;
 }
diff --git a/drivers/ddr/altera/sequencer.c b/drivers/ddr/altera/sequencer.c
index 5e7a943b68..0e4526288e 100644
--- a/drivers/ddr/altera/sequencer.c
+++ b/drivers/ddr/altera/sequencer.c
@@ -3705,12 +3705,19 @@ static void initialize_tracking(void)
 	       &sdr_reg_file->trk_rfsh);
 }
 
-int sdram_calibration_full(void)
+int sdram_calibration_full(struct socfpga_sdr *sdr)
 {
 	struct param_type my_param;
 	struct gbl_type my_gbl;
 	u32 pass;
 
+	/*
+	 * For size reasons, this file uses hard coded addresses.
+	 * Check if we are called with the correct address.
+	 */
+	if (sdr != (struct socfpga_sdr *)SOCFPGA_SDR_ADDRESS)
+		return -ENODEV;
+
 	memset(&my_param, 0, sizeof(my_param));
 	memset(&my_gbl, 0, sizeof(my_gbl));
 
diff --git a/drivers/ddr/altera/sequencer.h b/drivers/ddr/altera/sequencer.h
index a5760b03a5..d7f6935201 100644
--- a/drivers/ddr/altera/sequencer.h
+++ b/drivers/ddr/altera/sequencer.h
@@ -223,4 +223,39 @@ struct socfpga_data_mgr {
 	u32	mem_t_add;
 	u32	t_rl_add;
 };
+
+/* This struct describes the controller @ SOCFPGA_SDR_ADDRESS */
+struct socfpga_sdr {
+	/* SDR_PHYGRP_SCCGRP_ADDRESS */
+	u8 _align1[0xe00];
+	/* SDR_PHYGRP_SCCGRP_ADDRESS | 0xe00 */
+	struct socfpga_sdr_scc_mgr sdr_scc_mgr;
+	u8 _align2[0x1bc];
+	/* SDR_PHYGRP_PHYMGRGRP_ADDRESS */
+	struct socfpga_phy_mgr_cmd phy_mgr_cmd;
+	u8 _align3[0x2c];
+	/* SDR_PHYGRP_PHYMGRGRP_ADDRESS | 0x40 */
+	struct socfpga_phy_mgr_cfg phy_mgr_cfg;
+	u8 _align4[0xfa0];
+	/* SDR_PHYGRP_RWMGRGRP_ADDRESS */
+	u8 rwmgr_grp[0x800];
+	/* SDR_PHYGRP_RWMGRGRP_ADDRESS | 0x800 */
+	struct socfpga_sdr_rw_load_manager sdr_rw_load_mgr_regs;
+	u8 _align5[0x3f0];
+	/* SDR_PHYGRP_RWMGRGRP_ADDRESS | 0xC00 */
+	struct socfpga_sdr_rw_load_jump_manager sdr_rw_load_jump_mgr_regs;
+	u8 _align6[0x13f0];
+	/* SDR_PHYGRP_DATAMGRGRP_ADDRESS */
+	struct socfpga_data_mgr data_mgr;
+	u8 _align7[0x7f0];
+	/* SDR_PHYGRP_REGFILEGRP_ADDRESS */
+	struct socfpga_sdr_reg_file sdr_reg_file;
+	u8 _align8[0x7c8];
+	/* SDR_CTRLGRP_ADDRESS */
+	struct socfpga_sdr_ctrl sdr_ctrl;
+	u8 _align9[0xea4];
+};
+
+int sdram_calibration_full(struct socfpga_sdr *sdr);
+
 #endif /* _SEQUENCER_H_ */
diff --git a/drivers/mtd/nand/raw/denali.h b/drivers/mtd/nand/raw/denali.h
index 019deda094..63ae828768 100644
--- a/drivers/mtd/nand/raw/denali.h
+++ b/drivers/mtd/nand/raw/denali.h
@@ -10,6 +10,7 @@
 #include <linux/bitops.h>
 #include <linux/mtd/rawnand.h>
 #include <linux/types.h>
+#include <reset.h>
 
 #define DEVICE_RESET				0x0
 #define     DEVICE_RESET__BANK(bank)			BIT(bank)
@@ -315,6 +316,7 @@ struct denali_nand_info {
 	void (*host_write)(struct denali_nand_info *denali, u32 addr, u32 data);
 	void (*setup_dma)(struct denali_nand_info *denali, dma_addr_t dma_addr,
 			  int page, int write);
+	struct reset_ctl_bulk resets;
 };
 
 #define DENALI_CAP_HW_ECC_FIXUP			BIT(0)
diff --git a/drivers/mtd/nand/raw/denali_dt.c b/drivers/mtd/nand/raw/denali_dt.c
index d384b974df..0ce81324b9 100644
--- a/drivers/mtd/nand/raw/denali_dt.c
+++ b/drivers/mtd/nand/raw/denali_dt.c
@@ -131,15 +131,30 @@ static int denali_dt_probe(struct udevice *dev)
 		denali->clk_x_rate = 200000000;
 	}
 
+	ret = reset_get_bulk(dev, &denali->resets);
+	if (ret)
+		dev_warn(dev, "Can't get reset: %d\n", ret);
+	else
+		reset_deassert_bulk(&denali->resets);
+
 	return denali_init(denali);
 }
 
+static int denali_dt_remove(struct udevice *dev)
+{
+	struct denali_nand_info *denali = dev_get_priv(dev);
+
+	return reset_release_bulk(&denali->resets);
+}
+
 U_BOOT_DRIVER(denali_nand_dt) = {
 	.name = "denali-nand-dt",
 	.id = UCLASS_MISC,
 	.of_match = denali_nand_dt_ids,
 	.probe = denali_dt_probe,
 	.priv_auto_alloc_size = sizeof(struct denali_nand_info),
+	.remove = denali_dt_remove,
+	.flags = DM_FLAG_OS_PREPARE,
 };
 
 void board_nand_init(void)
diff --git a/drivers/reset/reset-socfpga.c b/drivers/reset/reset-socfpga.c
index b2acfcd2ec..cb8312619f 100644
--- a/drivers/reset/reset-socfpga.c
+++ b/drivers/reset/reset-socfpga.c
@@ -24,9 +24,39 @@
 #define NR_BANKS		8
 
 struct socfpga_reset_data {
-	void __iomem *membase;
+	void __iomem *modrst_base;
 };
 
+/*
+ * For compatibility with Kernels that don't support peripheral reset, this
+ * driver can keep the old behaviour of not asserting peripheral reset before
+ * starting the OS and deasserting all peripheral resets (enabling all
+ * peripherals).
+ *
+ * For that, the reset driver checks the environment variable
+ * "socfpga_legacy_reset_compat". If this variable is '1', perihperals are not
+ * reset again once taken out of reset and all peripherals in 'permodrst' are
+ * taken out of reset before booting into the OS.
+ * Note that this should be required for gen5 systems only that are running
+ * Linux kernels without proper peripheral reset support for all drivers used.
+ */
+static bool socfpga_reset_keep_enabled(void)
+{
+#if !defined(CONFIG_SPL_BUILD) || CONFIG_IS_ENABLED(ENV_SUPPORT)
+	const char *env_str;
+	long val;
+
+	env_str = env_get("socfpga_legacy_reset_compat");
+	if (env_str) {
+		val = simple_strtol(env_str, NULL, 0);
+		if (val == 1)
+			return true;
+	}
+#endif
+
+	return false;
+}
+
 static int socfpga_reset_assert(struct reset_ctl *reset_ctl)
 {
 	struct socfpga_reset_data *data = dev_get_priv(reset_ctl->dev);
@@ -35,7 +65,7 @@ static int socfpga_reset_assert(struct reset_ctl *reset_ctl)
 	int bank = id / (reg_width * BITS_PER_BYTE);
 	int offset = id % (reg_width * BITS_PER_BYTE);
 
-	setbits_le32(data->membase + (bank * BANK_INCREMENT), BIT(offset));
+	setbits_le32(data->modrst_base + (bank * BANK_INCREMENT), BIT(offset));
 	return 0;
 }
 
@@ -47,7 +77,7 @@ static int socfpga_reset_deassert(struct reset_ctl *reset_ctl)
 	int bank = id / (reg_width * BITS_PER_BYTE);
 	int offset = id % (reg_width * BITS_PER_BYTE);
 
-	clrbits_le32(data->membase + (bank * BANK_INCREMENT), BIT(offset));
+	clrbits_le32(data->modrst_base + (bank * BANK_INCREMENT), BIT(offset));
 	return 0;
 }
 
@@ -80,11 +110,24 @@ static int socfpga_reset_probe(struct udevice *dev)
 	const void *blob = gd->fdt_blob;
 	int node = dev_of_offset(dev);
 	u32 modrst_offset;
+	void __iomem *membase;
 
-	data->membase = devfdt_get_addr_ptr(dev);
+	membase = devfdt_get_addr_ptr(dev);
 
 	modrst_offset = fdtdec_get_int(blob, node, "altr,modrst-offset", 0x10);
-	data->membase += modrst_offset;
+	data->modrst_base = membase + modrst_offset;
+
+	return 0;
+}
+
+static int socfpga_reset_remove(struct udevice *dev)
+{
+	struct socfpga_reset_data *data = dev_get_priv(dev);
+
+	if (socfpga_reset_keep_enabled()) {
+		puts("Deasserting all peripheral resets\n");
+		writel(0, data->modrst_base + 4);
+	}
 
 	return 0;
 }
@@ -101,4 +144,6 @@ U_BOOT_DRIVER(socfpga_reset) = {
 	.probe = socfpga_reset_probe,
 	.priv_auto_alloc_size = sizeof(struct socfpga_reset_data),
 	.ops = &socfpga_reset_ops,
+	.remove = socfpga_reset_remove,
+	.flags	= DM_FLAG_OS_PREPARE,
 };
diff --git a/drivers/spi/cadence_qspi.c b/drivers/spi/cadence_qspi.c
index efdb178450..41c87004d8 100644
--- a/drivers/spi/cadence_qspi.c
+++ b/drivers/spi/cadence_qspi.c
@@ -8,6 +8,7 @@
 #include <dm.h>
 #include <fdtdec.h>
 #include <malloc.h>
+#include <reset.h>
 #include <spi.h>
 #include <linux/errno.h>
 #include "cadence_qspi.h"
@@ -154,10 +155,17 @@ static int cadence_spi_probe(struct udevice *bus)
 {
 	struct cadence_spi_platdata *plat = bus->platdata;
 	struct cadence_spi_priv *priv = dev_get_priv(bus);
+	int ret;
 
 	priv->regbase = plat->regbase;
 	priv->ahbbase = plat->ahbbase;
 
+	ret = reset_get_bulk(bus, &priv->resets);
+	if (ret)
+		dev_warn(bus, "Can't get reset: %d\n", ret);
+	else
+		reset_deassert_bulk(&priv->resets);
+
 	if (!priv->qspi_is_init) {
 		cadence_qspi_apb_controller_init(plat);
 		priv->qspi_is_init = 1;
@@ -166,6 +174,13 @@ static int cadence_spi_probe(struct udevice *bus)
 	return 0;
 }
 
+static int cadence_spi_remove(struct udevice *dev)
+{
+	struct cadence_spi_priv *priv = dev_get_priv(dev);
+
+	return reset_release_bulk(&priv->resets);
+}
+
 static int cadence_spi_set_mode(struct udevice *bus, uint mode)
 {
 	struct cadence_spi_priv *priv = dev_get_priv(bus);
@@ -342,4 +357,6 @@ U_BOOT_DRIVER(cadence_spi) = {
 	.platdata_auto_alloc_size = sizeof(struct cadence_spi_platdata),
 	.priv_auto_alloc_size = sizeof(struct cadence_spi_priv),
 	.probe = cadence_spi_probe,
+	.remove = cadence_spi_remove,
+	.flags = DM_FLAG_OS_PREPARE,
 };
diff --git a/drivers/spi/cadence_qspi.h b/drivers/spi/cadence_qspi.h
index b491407130..20cceca239 100644
--- a/drivers/spi/cadence_qspi.h
+++ b/drivers/spi/cadence_qspi.h
@@ -7,6 +7,8 @@
 #ifndef __CADENCE_QSPI_H__
 #define __CADENCE_QSPI_H__
 
+#include <reset.h>
+
 #define CQSPI_IS_ADDR(cmd_len)		(cmd_len > 1 ? 1 : 0)
 
 #define CQSPI_NO_DECODER_MAX_CS		4
@@ -42,6 +44,8 @@ struct cadence_spi_priv {
 	unsigned int	qspi_calibrated_hz;
 	unsigned int	qspi_calibrated_cs;
 	unsigned int	previous_hz;
+
+	struct reset_ctl_bulk resets;
 };
 
 /* Functions call declaration */
diff --git a/drivers/timer/dw-apb-timer.c b/drivers/timer/dw-apb-timer.c
index 085bfb02c5..cb48801af1 100644
--- a/drivers/timer/dw-apb-timer.c
+++ b/drivers/timer/dw-apb-timer.c
@@ -32,7 +32,7 @@ static int dw_apb_timer_get_count(struct udevice *dev, u64 *count)
 	 * requires the count to be incrementing. Invert the
 	 * result.
 	 */
-	*count = ~readl(priv->regs + DW_APB_CURR_VAL);
+	*count = timer_conv_64(~readl(priv->regs + DW_APB_CURR_VAL));
 
 	return 0;
 }