10 files changed, 279 insertions, 58 deletions

diff --git a/drivers/core/root.c b/drivers/core/root.c
index f24ddfa5218..c4fb48548bb 100644
--- a/drivers/core/root.c
+++ b/drivers/core/root.c
@@ -363,20 +363,22 @@ void *dm_priv_to_rw(void *priv)
 
 static int dm_probe_devices(struct udevice *dev, bool pre_reloc_only)
 {
-	u32 mask = DM_FLAG_PROBE_AFTER_BIND;
-	u32 flags = dev_get_flags(dev);
+	ofnode node = dev_ofnode(dev);
 	struct udevice *child;
 	int ret;
 
-	if (pre_reloc_only)
-		mask |= DM_FLAG_PRE_RELOC;
+	if (pre_reloc_only &&
+	    (!ofnode_valid(node) || !ofnode_pre_reloc(node)) &&
+	    !(dev->driver->flags & DM_FLAG_PRE_RELOC))
+		goto probe_children;
 
-	if ((flags & mask) == mask) {
+	if (dev_get_flags(dev) & DM_FLAG_PROBE_AFTER_BIND) {
 		ret = device_probe(dev);
 		if (ret)
 			return ret;
 	}
 
+probe_children:
 	list_for_each_entry(child, &dev->child_head, sibling_node)
 		dm_probe_devices(child, pre_reloc_only);
 
diff --git a/drivers/crypto/fsl/Kconfig b/drivers/crypto/fsl/Kconfig
index b04c70183d2..91a51cc5fe7 100644
--- a/drivers/crypto/fsl/Kconfig
+++ b/drivers/crypto/fsl/Kconfig
@@ -73,3 +73,13 @@ config FSL_CAAM_RNG
 	  reseeded from the TRNG every time random data is generated.
 
 endif
+
+config FSL_DCP_RNG
+	bool "Enable Random Number Generator support"
+	depends on DM_RNG
+	default n
+	help
+	  Enable support for the hardware based random number generator
+	  module of the DCP. It uses the True Random Number Generator (TRNG)
+	  and a Pseudo-Random Number Generator (PRNG) to achieve a true
+	  randomness and cryptographic strength.
diff --git a/drivers/crypto/fsl/Makefile b/drivers/crypto/fsl/Makefile
index f9c3ccecfc2..7a2543e16cc 100644
--- a/drivers/crypto/fsl/Makefile
+++ b/drivers/crypto/fsl/Makefile
@@ -7,4 +7,5 @@ obj-$(CONFIG_FSL_CAAM) += jr.o fsl_hash.o jobdesc.o error.o
 obj-$(CONFIG_CMD_BLOB)$(CONFIG_IMX_CAAM_DEK_ENCAP) += fsl_blob.o
 obj-$(CONFIG_RSA_FREESCALE_EXP) += fsl_rsa.o
 obj-$(CONFIG_FSL_CAAM_RNG) += rng.o
+obj-$(CONFIG_FSL_DCP_RNG) += dcp_rng.o
 obj-$(CONFIG_FSL_MFGPROT) += fsl_mfgprot.o
diff --git a/drivers/crypto/fsl/dcp_rng.c b/drivers/crypto/fsl/dcp_rng.c
new file mode 100644
index 00000000000..31706960157
--- /dev/null
+++ b/drivers/crypto/fsl/dcp_rng.c
@@ -0,0 +1,182 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * RNG driver for Freescale RNGC
+ *
+ * Copyright 2022 NXP
+ *
+ * Based on RNGC driver in drivers/char/hw_random/imx-rngc.c in Linux
+ */
+
+#include <common.h>
+#include <cpu_func.h>
+#include <dm.h>
+#include <rng.h>
+#include <asm/cache.h>
+#include <asm/io.h>
+#include <dm/root.h>
+#include <linux/delay.h>
+#include <linux/kernel.h>
+
+#define DCP_RNG_MAX_FIFO_STORE_SIZE	4
+#define RNGC_VER_ID			0x0
+#define RNGC_COMMAND			0x4
+#define RNGC_CONTROL			0x8
+#define RNGC_STATUS			0xC
+#define RNGC_ERROR			0x10
+#define RNGC_FIFO			0x14
+
+/* the fields in the ver id register */
+#define RNGC_TYPE_SHIFT			28
+
+/* the rng_type field */
+#define RNGC_TYPE_RNGB			0x1
+#define RNGC_TYPE_RNGC			0x2
+
+#define RNGC_CMD_CLR_ERR		0x20
+#define RNGC_CMD_SEED			0x2
+
+#define RNGC_CTRL_AUTO_SEED		0x10
+
+#define RNGC_STATUS_ERROR		0x10000
+#define RNGC_STATUS_FIFO_LEVEL_MASK	0xf00
+#define RNGC_STATUS_FIFO_LEVEL_SHIFT	8
+#define RNGC_STATUS_SEED_DONE		0x20
+#define RNGC_STATUS_ST_DONE		0x10
+
+#define RNGC_ERROR_STATUS_STAT_ERR	0x8
+
+#define RNGC_TIMEOUT			3000000U /* 3 sec */
+
+struct imx_rngc_priv {
+	unsigned long base;
+};
+
+static int rngc_read(struct udevice *dev, void *data, size_t len)
+{
+	struct imx_rngc_priv *priv = dev_get_priv(dev);
+	u8 buffer[DCP_RNG_MAX_FIFO_STORE_SIZE];
+	u32 status, level;
+	size_t size;
+
+	while (len) {
+		status = readl(priv->base + RNGC_STATUS);
+
+		/* is there some error while reading this random number? */
+		if (status & RNGC_STATUS_ERROR)
+			break;
+		/* how many random numbers are in FIFO? [0-16] */
+		level = (status & RNGC_STATUS_FIFO_LEVEL_MASK) >>
+			RNGC_STATUS_FIFO_LEVEL_SHIFT;
+
+		if (level) {
+			/* retrieve a random number from FIFO */
+			*(u32 *)buffer = readl(priv->base + RNGC_FIFO);
+			size = min(len, sizeof(u32));
+			memcpy(data, buffer, size);
+			data += size;
+			len -= size;
+		}
+	}
+
+	return len ? -EIO : 0;
+}
+
+static int rngc_init(struct imx_rngc_priv *priv)
+{
+	u32 cmd, ctrl, status, err_reg = 0;
+	unsigned long long timeval = 0;
+	unsigned long long timeout = RNGC_TIMEOUT;
+
+	/* clear error */
+	cmd = readl(priv->base + RNGC_COMMAND);
+	writel(cmd | RNGC_CMD_CLR_ERR, priv->base + RNGC_COMMAND);
+
+	/* create seed, repeat while there is some statistical error */
+	do {
+		/* seed creation */
+		cmd = readl(priv->base + RNGC_COMMAND);
+		writel(cmd | RNGC_CMD_SEED, priv->base + RNGC_COMMAND);
+
+		udelay(1);
+		timeval += 1;
+
+		status = readl(priv->base + RNGC_STATUS);
+		err_reg = readl(priv->base + RNGC_ERROR);
+
+		if (status & (RNGC_STATUS_SEED_DONE | RNGC_STATUS_ST_DONE))
+			break;
+
+		if (timeval > timeout) {
+			debug("rngc timed out\n");
+			return -ETIMEDOUT;
+		}
+	} while (err_reg == RNGC_ERROR_STATUS_STAT_ERR);
+
+	if (err_reg)
+		return -EIO;
+
+	/*
+	 * enable automatic seeding, the rngc creates a new seed automatically
+	 * after serving 2^20 random 160-bit words
+	 */
+	ctrl = readl(priv->base + RNGC_CONTROL);
+	ctrl |= RNGC_CTRL_AUTO_SEED;
+	writel(ctrl, priv->base + RNGC_CONTROL);
+	return 0;
+}
+
+static int rngc_probe(struct udevice *dev)
+{
+	struct imx_rngc_priv *priv = dev_get_priv(dev);
+	fdt_addr_t addr;
+	u32 ver_id;
+	u8  rng_type;
+	int ret;
+
+	addr = dev_read_addr(dev);
+	if (addr == FDT_ADDR_T_NONE) {
+		ret = -EINVAL;
+		goto err;
+	}
+
+	priv->base = addr;
+	ver_id = readl(priv->base + RNGC_VER_ID);
+	rng_type = ver_id >> RNGC_TYPE_SHIFT;
+	/*
+	 * This driver supports only RNGC and RNGB. (There's a different
+	 * driver for RNGA.)
+	 */
+	if (rng_type != RNGC_TYPE_RNGC && rng_type != RNGC_TYPE_RNGB) {
+		ret = -ENODEV;
+		goto err;
+	}
+
+	ret = rngc_init(priv);
+	if (ret)
+		goto err;
+
+	return 0;
+
+err:
+	printf("%s error = %d\n", __func__, ret);
+	return ret;
+}
+
+static const struct dm_rng_ops rngc_ops = {
+	.read = rngc_read,
+};
+
+static const struct udevice_id rngc_dt_ids[] = {
+	{ .compatible = "fsl,imx25-rngb" },
+	{ }
+};
+
+U_BOOT_DRIVER(dcp_rng) = {
+	.name = "dcp_rng",
+	.id = UCLASS_RNG,
+	.of_match = rngc_dt_ids,
+	.ops = &rngc_ops,
+	.probe = rngc_probe,
+	.priv_auto  = sizeof(struct imx_rngc_priv),
+	.flags = DM_FLAG_ALLOC_PRIV_DMA,
+};
diff --git a/drivers/fpga/socfpga_arria10.c b/drivers/fpga/socfpga_arria10.c
index 3b785e67d0b..96b195063e0 100644
--- a/drivers/fpga/socfpga_arria10.c
+++ b/drivers/fpga/socfpga_arria10.c
@@ -777,42 +777,20 @@ int socfpga_loadfs(fpga_fs_info *fpga_fsinfo, const void *buf, size_t bsize,
 {
 	struct fpga_loadfs_info fpga_loadfs;
 	struct udevice *dev;
-	int status, ret, size;
+	int status, ret;
 	u32 buffer = (uintptr_t)buf;
 	size_t buffer_sizebytes = bsize;
 	size_t buffer_sizebytes_ori = bsize;
 	size_t total_sizeof_image = 0;
 	ofnode node;
-	const fdt32_t *phandle_p;
-	u32 phandle;
 
 	node = get_fpga_mgr_ofnode(ofnode_null());
-
-	if (ofnode_valid(node)) {
-		phandle_p = ofnode_get_property(node, "firmware-loader", &size);
-		if (!phandle_p) {
-			node = ofnode_path("/chosen");
-			if (!ofnode_valid(node)) {
-				debug("FPGA: /chosen node was not found.\n");
-				return -ENOENT;
-			}
-
-			phandle_p = ofnode_get_property(node, "firmware-loader",
-						       &size);
-			if (!phandle_p) {
-				debug("FPGA: firmware-loader property was not");
-				debug(" found.\n");
-				return -ENOENT;
-			}
-		}
-	} else {
+	if (!ofnode_valid(node)) {
 		debug("FPGA: FPGA manager node was not found.\n");
 		return -ENOENT;
 	}
 
-	phandle = fdt32_to_cpu(*phandle_p);
-	ret = uclass_get_device_by_phandle_id(UCLASS_FS_FIRMWARE_LOADER,
-					     phandle, &dev);
+	ret = get_fs_loader(&dev);
 	if (ret)
 		return ret;
 
diff --git a/drivers/gpio/gpio-uclass.c b/drivers/gpio/gpio-uclass.c
index 3a6ef3b01d5..dbebf3a53eb 100644
--- a/drivers/gpio/gpio-uclass.c
+++ b/drivers/gpio/gpio-uclass.c
@@ -311,34 +311,11 @@ static int gpio_hog_probe(struct udevice *dev)
 	return 0;
 }
 
-int gpio_hog_probe_all(void)
-{
-	struct udevice *dev;
-	int ret;
-	int retval = 0;
-
-	for (uclass_first_device(UCLASS_NOP, &dev);
-	     dev;
-	     uclass_find_next_device(&dev)) {
-		if (dev->driver == DM_DRIVER_GET(gpio_hog)) {
-			ret = device_probe(dev);
-			if (ret) {
-				printf("Failed to probe device %s err: %d\n",
-				       dev->name, ret);
-				retval = ret;
-			}
-		}
-	}
-
-	return retval;
-}
-
 int gpio_hog_lookup_name(const char *name, struct gpio_desc **desc)
 {
 	struct udevice *dev;
 
 	*desc = NULL;
-	gpio_hog_probe_all();
 	if (!uclass_get_device_by_name(UCLASS_NOP, name, &dev)) {
 		struct gpio_hog_priv *priv = dev_get_priv(dev);
 
@@ -1505,9 +1482,17 @@ static int gpio_post_bind(struct udevice *dev)
 								 &child);
 				if (ret)
 					return ret;
+
+				/*
+				 * Make sure gpio-hogs are probed after bind
+				 * since hogs can be essential to the hardware
+				 * system.
+				 */
+				dev_or_flags(child, DM_FLAG_PROBE_AFTER_BIND);
 			}
 		}
 	}
+
 	return 0;
 }
 
diff --git a/drivers/misc/fs_loader.c b/drivers/misc/fs_loader.c
index 5b4d03639c3..ccf5c7a8037 100644
--- a/drivers/misc/fs_loader.c
+++ b/drivers/misc/fs_loader.c
@@ -15,6 +15,8 @@
 #include <fs_loader.h>
 #include <log.h>
 #include <asm/global_data.h>
+#include <dm/device-internal.h>
+#include <dm/root.h>
 #include <linux/string.h>
 #include <mapmem.h>
 #include <malloc.h>
@@ -297,6 +299,31 @@ U_BOOT_DRIVER(fs_loader) = {
 	.priv_auto	= sizeof(struct firmware),
 };
 
+static struct device_plat default_plat = { 0 };
+
+int get_fs_loader(struct udevice **dev)
+{
+	int ret;
+	ofnode node = ofnode_get_chosen_node("firmware-loader");
+
+	if (ofnode_valid(node))
+		return uclass_get_device_by_ofnode(UCLASS_FS_FIRMWARE_LOADER,
+						   node, dev);
+
+	/* Try the first device if none was chosen */
+	ret = uclass_first_device_err(UCLASS_FS_FIRMWARE_LOADER, dev);
+	if (ret != -ENODEV)
+		return ret;
+
+	/* Just create a new device */
+	ret = device_bind(dm_root(), DM_DRIVER_GET(fs_loader), "default-loader",
+			  &default_plat, ofnode_null(), dev);
+	if (ret)
+		return ret;
+
+	return device_probe(*dev);
+}
+
 UCLASS_DRIVER(fs_loader) = {
 	.id		= UCLASS_FS_FIRMWARE_LOADER,
 	.name		= "fs-loader",
diff --git a/drivers/net/fm/fm.c b/drivers/net/fm/fm.c
index 055dd61fbe5..e1fba24471c 100644
--- a/drivers/net/fm/fm.c
+++ b/drivers/net/fm/fm.c
@@ -5,9 +5,11 @@
  */
 #include <common.h>
 #include <env.h>
+#include <fs_loader.h>
 #include <image.h>
 #include <malloc.h>
 #include <asm/io.h>
+#include <dm/device_compat.h>
 #include <linux/errno.h>
 #include <u-boot/crc.h>
 #include <dm.h>
@@ -353,7 +355,7 @@ static void fm_init_qmi(struct fm_qmi_common *qmi)
 
 /* Init common part of FM, index is fm num# like fm as above */
 #ifdef CONFIG_TFABOOT
-int fm_init_common(int index, struct ccsr_fman *reg)
+int fm_init_common(int index, struct ccsr_fman *reg, const char *firmware_name)
 {
 	int rc;
 	void *addr = NULL;
@@ -448,10 +450,32 @@ int fm_init_common(int index, struct ccsr_fman *reg)
 	return fm_init_bmi(index, &reg->fm_bmi_common);
 }
 #else
-int fm_init_common(int index, struct ccsr_fman *reg)
+int fm_init_common(int index, struct ccsr_fman *reg, const char *firmware_name)
 {
 	int rc;
-#if defined(CONFIG_SYS_QE_FMAN_FW_IN_NOR)
+#if defined(CONFIG_SYS_QE_FMAN_FW_IN_FS)
+	struct udevice *fs_loader;
+	void *addr = malloc(CONFIG_SYS_QE_FMAN_FW_LENGTH);
+
+	if (!addr)
+		return -ENOMEM;
+
+	rc = get_fs_loader(&fs_loader);
+	if (rc) {
+		debug("could not get fs loader: %d\n", rc);
+		return rc;
+	}
+
+	if (!firmware_name)
+		firmware_name = "fman.itb";
+
+	rc = request_firmware_into_buf(fs_loader, firmware_name, addr,
+				       CONFIG_SYS_QE_FMAN_FW_LENGTH, 0);
+	if (rc < 0) {
+		debug("could not request %s: %d\n", firmware_name, rc);
+		return rc;
+	}
+#elif defined(CONFIG_SYS_QE_FMAN_FW_IN_NOR)
 	void *addr = (void *)CONFIG_SYS_FMAN_FW_ADDR;
 #elif defined(CONFIG_SYS_QE_FMAN_FW_IN_NAND)
 	size_t fw_length = CONFIG_SYS_QE_FMAN_FW_LENGTH;
@@ -561,6 +585,8 @@ static const struct udevice_id fman_ids[] = {
 
 static int fman_probe(struct udevice *dev)
 {
+	const char *firmware_name = NULL;
+	int ret;
 	struct fman_priv *priv = dev_get_priv(dev);
 
 	priv->reg = (struct ccsr_fman *)(uintptr_t)dev_read_addr(dev);
@@ -570,7 +596,13 @@ static int fman_probe(struct udevice *dev)
 		return -EINVAL;
 	}
 
-	return fm_init_common(priv->fman_id, priv->reg);
+	ret = dev_read_string_index(dev, "firmware-name", 0, &firmware_name);
+	if (ret && ret != -EINVAL) {
+		dev_dbg(dev, "Could not read firmware-name\n");
+		return ret;
+	}
+
+	return fm_init_common(priv->fman_id, priv->reg, firmware_name);
 }
 
 static int fman_remove(struct udevice *dev)
diff --git a/drivers/net/fm/fm.h b/drivers/net/fm/fm.h
index ba858cc24b0..a2d5b03429a 100644
--- a/drivers/net/fm/fm.h
+++ b/drivers/net/fm/fm.h
@@ -106,7 +106,7 @@ struct fm_port_global_pram {
 
 void *fm_muram_alloc(int fm_idx, size_t size, ulong align);
 void *fm_muram_base(int fm_idx);
-int fm_init_common(int index, struct ccsr_fman *reg);
+int fm_init_common(int index, struct ccsr_fman *reg, const char *firmware_name);
 int fm_eth_initialize(struct ccsr_fman *reg, struct fm_eth_info *info);
 phy_interface_t fman_port_enet_if(enum fm_port port);
 void fman_disable_port(enum fm_port port);
diff --git a/drivers/qe/Kconfig b/drivers/qe/Kconfig
index c44a81f69a5..89a75c175b0 100644
--- a/drivers/qe/Kconfig
+++ b/drivers/qe/Kconfig
@@ -27,6 +27,10 @@ choice
 	depends on FMAN_ENET || QE
 	default SYS_QE_FMAN_FW_IN_ROM
 
+config SYS_QE_FMAN_FW_IN_FS
+	depends on FS_LOADER && FMAN_ENET
+	bool "Filesystem"
+
 config SYS_QE_FMAN_FW_IN_NOR
 	bool "NOR flash"