GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/bootloader/u-boot-2020.01/drivers/dfu/Kconfig

@@ -0,0 +1,72 @@
+menu "DFU support"
+
+config DFU
+	bool
+	imply DFU_OVER_USB if USB_GADGET
+
+config DFU_OVER_USB
+	bool
+	select HASH
+	depends on USB_GADGET
+
+config DFU_OVER_TFTP
+	bool
+	depends on NET
+
+if DFU
+config DFU_TFTP
+	bool "DFU via TFTP"
+	select DFU_OVER_TFTP
+	help
+	  This option allows performing update of DFU-managed medium with data
+	  sent via TFTP boot.
+
+	  Detailed description of this feature can be found at ./doc/README.dfutftp
+
+config DFU_MMC
+	bool "MMC back end for DFU"
+	help
+	  This option enables using DFU to read and write to MMC based storage.
+
+config DFU_NAND
+	bool "NAND back end for DFU"
+	depends on CMD_MTDPARTS
+	depends on MTD_RAW_NAND
+	help
+	  This option enables using DFU to read and write to NAND based
+	  storage.
+
+config DFU_RAM
+	bool "RAM back end for DFU"
+	help
+	  This option enables using DFU to read and write RAM on the target.
+
+config DFU_SF
+	bool "SPI flash back end for DFU"
+	help
+	  This option enables using DFU to read and write to SPI flash based
+	  storage.
+
+config DFU_SF_PART
+	bool "MTD partition support for SPI flash back end"
+	depends on DFU_SF && CMD_MTDPARTS
+	default y
+	help
+	  This option enables the support of "part" and "partubi" target in
+	  SPI flash DFU back end.
+
+config DFU_MTD
+	bool "MTD back end for DFU"
+	depends on DM_MTD
+	help
+	  This option enables using DFU to read and write to on any MTD device.
+
+config DFU_VIRT
+	bool "VIRTUAL flash back end for DFU"
+	help
+	  This option enables using DFU to read and write to VIRTUAL device
+	  used at board level to manage specific behavior
+	  (OTP update for example).
+
+endif
+endmenu

source/bootloader/u-boot-2020.01/drivers/dfu/Makefile

@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright (C) 2012 Samsung Electronics
+# Lukasz Majewski <l.majewski@samsung.com>
+
+obj-$(CONFIG_$(SPL_)DFU) += dfu.o
+obj-$(CONFIG_$(SPL_)DFU_MMC) += dfu_mmc.o
+obj-$(CONFIG_$(SPL_)DFU_MTD) += dfu_mtd.o
+obj-$(CONFIG_$(SPL_)DFU_NAND) += dfu_nand.o
+obj-$(CONFIG_$(SPL_)DFU_RAM) += dfu_ram.o
+obj-$(CONFIG_$(SPL_)DFU_SF) += dfu_sf.o
+obj-$(CONFIG_$(SPL_)DFU_TFTP) += dfu_tftp.o
+obj-$(CONFIG_$(SPL_)DFU_VIRT) += dfu_virt.o

source/bootloader/u-boot-2020.01/drivers/dfu/dfu.c

@@ -0,0 +1,707 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * dfu.c -- DFU back-end routines
+ *
+ * Copyright (C) 2012 Samsung Electronics
+ * author: Lukasz Majewski <l.majewski@samsung.com>
+ */
+
+#include <common.h>
+#include <env.h>
+#include <errno.h>
+#include <malloc.h>
+#include <mmc.h>
+#include <fat.h>
+#include <dfu.h>
+#include <hash.h>
+#include <linux/list.h>
+#include <linux/compiler.h>
+
+static LIST_HEAD(dfu_list);
+static int dfu_alt_num;
+static int alt_num_cnt;
+static struct hash_algo *dfu_hash_algo;
+
+/*
+ * The purpose of the dfu_flush_callback() function is to
+ * provide callback for dfu user
+ */
+__weak void dfu_flush_callback(struct dfu_entity *dfu)
+{
+}
+
+/*
+ * The purpose of the dfu_initiated_callback() function is to
+ * provide callback for dfu user
+ */
+__weak void dfu_initiated_callback(struct dfu_entity *dfu)
+{
+}
+
+/*
+ * The purpose of the dfu_usb_get_reset() function is to
+ * provide information if after USB_DETACH request
+ * being sent the dfu-util performed reset of USB
+ * bus.
+ *
+ * Described behaviour is the only way to distinct if
+ * user has typed -e (detach) or -R (reset) when invoking
+ * dfu-util command.
+ *
+ */
+__weak bool dfu_usb_get_reset(void)
+{
+#ifdef CONFIG_SPL_DFU_NO_RESET
+	return false;
+#else
+	return true;
+#endif
+}
+
+static int dfu_find_alt_num(const char *s)
+{
+	int i = 0;
+
+	for (; *s; s++)
+		if (*s == ';')
+			i++;
+
+	return ++i;
+}
+
+/*
+ * treat dfu_alt_info with several interface information
+ * to allow DFU on several device with one command,
+ * the string format is
+ * interface devstring'='alternate list (';' separated)
+ * and each interface separated by '&'
+ */
+int dfu_config_interfaces(char *env)
+{
+	struct dfu_entity *dfu;
+	char *s, *i, *d, *a, *part;
+	int ret = -EINVAL;
+	int n = 1;
+
+	s = env;
+	for (; *s; s++) {
+		if (*s == ';')
+			n++;
+		if (*s == '&')
+			n++;
+	}
+	ret = dfu_alt_init(n, &dfu);
+	if (ret)
+		return ret;
+
+	s = env;
+	while (s) {
+		ret = -EINVAL;
+		i = strsep(&s, " ");
+		if (!i)
+			break;
+		d = strsep(&s, "=");
+		if (!d)
+			break;
+		a = strsep(&s, "&");
+		if (!a)
+			a = s;
+		do {
+			part = strsep(&a, ";");
+			ret = dfu_alt_add(dfu, i, d, part);
+			if (ret)
+				return ret;
+		} while (a);
+	}
+
+	return ret;
+}
+
+int dfu_init_env_entities(char *interface, char *devstr)
+{
+	const char *str_env;
+	char *env_bkp;
+	int ret = 0;
+
+#ifdef CONFIG_SET_DFU_ALT_INFO
+	set_dfu_alt_info(interface, devstr);
+#endif
+	str_env = env_get("dfu_alt_info");
+	if (!str_env) {
+		pr_err("\"dfu_alt_info\" env variable not defined!\n");
+		return -EINVAL;
+	}
+
+	env_bkp = strdup(str_env);
+	if (!interface && !devstr)
+		ret = dfu_config_interfaces(env_bkp);
+	else
+		ret = dfu_config_entities(env_bkp, interface, devstr);
+
+	if (ret) {
+		pr_err("DFU entities configuration failed!\n");
+		pr_err("(partition table does not match dfu_alt_info?)\n");
+		goto done;
+	}
+
+done:
+	free(env_bkp);
+	return ret;
+}
+
+static unsigned char *dfu_buf;
+static unsigned long dfu_buf_size;
+static enum dfu_device_type dfu_buf_device_type;
+
+unsigned char *dfu_free_buf(void)
+{
+	free(dfu_buf);
+	dfu_buf = NULL;
+	return dfu_buf;
+}
+
+unsigned long dfu_get_buf_size(void)
+{
+	return dfu_buf_size;
+}
+
+unsigned char *dfu_get_buf(struct dfu_entity *dfu)
+{
+	char *s;
+
+	/* manage several entity with several contraint */
+	if (dfu_buf && dfu->dev_type != dfu_buf_device_type)
+		dfu_free_buf();
+
+	if (dfu_buf != NULL)
+		return dfu_buf;
+
+	s = env_get("dfu_bufsiz");
+	if (s)
+		dfu_buf_size = (unsigned long)simple_strtol(s, NULL, 0);
+
+	if (!s || !dfu_buf_size)
+		dfu_buf_size = CONFIG_SYS_DFU_DATA_BUF_SIZE;
+
+	if (dfu->max_buf_size && dfu_buf_size > dfu->max_buf_size)
+		dfu_buf_size = dfu->max_buf_size;
+
+	dfu_buf = memalign(CONFIG_SYS_CACHELINE_SIZE, dfu_buf_size);
+	if (dfu_buf == NULL)
+		printf("%s: Could not memalign 0x%lx bytes\n",
+		       __func__, dfu_buf_size);
+
+	dfu_buf_device_type = dfu->dev_type;
+	return dfu_buf;
+}
+
+static char *dfu_get_hash_algo(void)
+{
+	char *s;
+
+	s = env_get("dfu_hash_algo");
+	if (!s)
+		return NULL;
+
+	if (!strcmp(s, "crc32")) {
+		debug("%s: DFU hash method: %s\n", __func__, s);
+		return s;
+	}
+
+	pr_err("DFU hash method: %s not supported!\n", s);
+	return NULL;
+}
+
+static int dfu_write_buffer_drain(struct dfu_entity *dfu)
+{
+	long w_size;
+	int ret;
+
+	/* flush size? */
+	w_size = dfu->i_buf - dfu->i_buf_start;
+	if (w_size == 0)
+		return 0;
+
+	if (dfu_hash_algo)
+		dfu_hash_algo->hash_update(dfu_hash_algo, &dfu->crc,
+					   dfu->i_buf_start, w_size, 0);
+
+	ret = dfu->write_medium(dfu, dfu->offset, dfu->i_buf_start, &w_size);
+	if (ret)
+		debug("%s: Write error!\n", __func__);
+
+	/* point back */
+	dfu->i_buf = dfu->i_buf_start;
+
+	/* update offset */
+	dfu->offset += w_size;
+
+	puts("#");
+
+	return ret;
+}
+
+void dfu_transaction_cleanup(struct dfu_entity *dfu)
+{
+	/* clear everything */
+	dfu->crc = 0;
+	dfu->offset = 0;
+	dfu->i_blk_seq_num = 0;
+	dfu->i_buf_start = dfu_get_buf(dfu);
+	dfu->i_buf_end = dfu->i_buf_start;
+	dfu->i_buf = dfu->i_buf_start;
+	dfu->r_left = 0;
+	dfu->b_left = 0;
+	dfu->bad_skip = 0;
+
+	dfu->inited = 0;
+}
+
+int dfu_transaction_initiate(struct dfu_entity *dfu, bool read)
+{
+	int ret = 0;
+
+	if (dfu->inited)
+		return 0;
+
+	dfu_transaction_cleanup(dfu);
+
+	if (dfu->i_buf_start == NULL)
+		return -ENOMEM;
+
+	dfu->i_buf_end = dfu->i_buf_start + dfu_get_buf_size();
+
+	if (read) {
+		ret = dfu->get_medium_size(dfu, &dfu->r_left);
+		if (ret < 0)
+			return ret;
+		debug("%s: %s %lld [B]\n", __func__, dfu->name, dfu->r_left);
+	}
+
+	dfu->inited = 1;
+	dfu_initiated_callback(dfu);
+
+	return 0;
+}
+
+int dfu_flush(struct dfu_entity *dfu, void *buf, int size, int blk_seq_num)
+{
+	int ret = 0;
+
+	ret = dfu_write_buffer_drain(dfu);
+	if (ret)
+		return ret;
+
+	if (dfu->flush_medium)
+		ret = dfu->flush_medium(dfu);
+
+	if (dfu_hash_algo)
+		printf("\nDFU complete %s: 0x%08x\n", dfu_hash_algo->name,
+		       dfu->crc);
+
+	dfu_flush_callback(dfu);
+
+	dfu_transaction_cleanup(dfu);
+
+	return ret;
+}
+
+int dfu_write(struct dfu_entity *dfu, void *buf, int size, int blk_seq_num)
+{
+	int ret;
+
+	debug("%s: name: %s buf: 0x%p size: 0x%x p_num: 0x%x offset: 0x%llx bufoffset: 0x%lx\n",
+	      __func__, dfu->name, buf, size, blk_seq_num, dfu->offset,
+	      (unsigned long)(dfu->i_buf - dfu->i_buf_start));
+
+	ret = dfu_transaction_initiate(dfu, false);
+	if (ret < 0)
+		return ret;
+
+	if (dfu->i_blk_seq_num != blk_seq_num) {
+		printf("%s: Wrong sequence number! [%d] [%d]\n",
+		       __func__, dfu->i_blk_seq_num, blk_seq_num);
+		dfu_transaction_cleanup(dfu);
+		return -1;
+	}
+
+	/* DFU 1.1 standard says:
+	 * The wBlockNum field is a block sequence number. It increments each
+	 * time a block is transferred, wrapping to zero from 65,535. It is used
+	 * to provide useful context to the DFU loader in the device."
+	 *
+	 * This means that it's a 16 bit counter that roll-overs at
+	 * 0xffff -> 0x0000. By having a typical 4K transfer block
+	 * we roll-over at exactly 256MB. Not very fun to debug.
+	 *
+	 * Handling rollover, and having an inited variable,
+	 * makes things work.
+	 */
+
+	/* handle rollover */
+	dfu->i_blk_seq_num = (dfu->i_blk_seq_num + 1) & 0xffff;
+
+	/* flush buffer if overflow */
+	if ((dfu->i_buf + size) > dfu->i_buf_end) {
+		ret = dfu_write_buffer_drain(dfu);
+		if (ret) {
+			dfu_transaction_cleanup(dfu);
+			return ret;
+		}
+	}
+
+	/* we should be in buffer now (if not then size too large) */
+	if ((dfu->i_buf + size) > dfu->i_buf_end) {
+		pr_err("Buffer overflow! (0x%p + 0x%x > 0x%p)\n", dfu->i_buf,
+		      size, dfu->i_buf_end);
+		dfu_transaction_cleanup(dfu);
+		return -1;
+	}
+
+	memcpy(dfu->i_buf, buf, size);
+	dfu->i_buf += size;
+
+	/* if end or if buffer full flush */
+	if (size == 0 || (dfu->i_buf + size) > dfu->i_buf_end) {
+		ret = dfu_write_buffer_drain(dfu);
+		if (ret) {
+			dfu_transaction_cleanup(dfu);
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
+static int dfu_read_buffer_fill(struct dfu_entity *dfu, void *buf, int size)
+{
+	long chunk;
+	int ret, readn;
+
+	readn = 0;
+	while (size > 0) {
+		/* get chunk that can be read */
+		chunk = min((long)size, dfu->b_left);
+		/* consume */
+		if (chunk > 0) {
+			memcpy(buf, dfu->i_buf, chunk);
+			if (dfu_hash_algo)
+				dfu_hash_algo->hash_update(dfu_hash_algo,
+							   &dfu->crc, buf,
+							   chunk, 0);
+
+			dfu->i_buf += chunk;
+			dfu->b_left -= chunk;
+			size -= chunk;
+			buf += chunk;
+			readn += chunk;
+		}
+
+		/* all done */
+		if (size > 0) {
+			/* no more to read */
+			if (dfu->r_left == 0)
+				break;
+
+			dfu->i_buf = dfu->i_buf_start;
+			dfu->b_left = dfu->i_buf_end - dfu->i_buf_start;
+
+			/* got to read, but buffer is empty */
+			if (dfu->b_left > dfu->r_left)
+				dfu->b_left = dfu->r_left;
+			ret = dfu->read_medium(dfu, dfu->offset, dfu->i_buf,
+					&dfu->b_left);
+			if (ret != 0) {
+				debug("%s: Read error!\n", __func__);
+				return ret;
+			}
+			if (dfu->b_left == 0)
+				break;
+			dfu->offset += dfu->b_left;
+			dfu->r_left -= dfu->b_left;
+
+			puts("#");
+		}
+	}
+
+	return readn;
+}
+
+int dfu_read(struct dfu_entity *dfu, void *buf, int size, int blk_seq_num)
+{
+	int ret = 0;
+
+	debug("%s: name: %s buf: 0x%p size: 0x%x p_num: 0x%x i_buf: 0x%p\n",
+	       __func__, dfu->name, buf, size, blk_seq_num, dfu->i_buf);
+
+	ret = dfu_transaction_initiate(dfu, true);
+	if (ret < 0)
+		return ret;
+
+	if (dfu->i_blk_seq_num != blk_seq_num) {
+		printf("%s: Wrong sequence number! [%d] [%d]\n",
+		       __func__, dfu->i_blk_seq_num, blk_seq_num);
+		return -1;
+	}
+	/* handle rollover */
+	dfu->i_blk_seq_num = (dfu->i_blk_seq_num + 1) & 0xffff;
+
+	ret = dfu_read_buffer_fill(dfu, buf, size);
+	if (ret < 0) {
+		printf("%s: Failed to fill buffer\n", __func__);
+		return -1;
+	}
+
+	if (ret < size) {
+		if (dfu_hash_algo)
+			debug("%s: %s %s: 0x%x\n", __func__, dfu->name,
+			      dfu_hash_algo->name, dfu->crc);
+		puts("\nUPLOAD ... done\nCtrl+C to exit ...\n");
+
+		dfu_transaction_cleanup(dfu);
+	}
+
+	return ret;
+}
+
+static int dfu_fill_entity(struct dfu_entity *dfu, char *s, int alt,
+			   char *interface, char *devstr)
+{
+	char *st;
+
+	debug("%s: %s interface: %s dev: %s\n", __func__, s, interface, devstr);
+	st = strsep(&s, " ");
+	strcpy(dfu->name, st);
+
+	dfu->alt = alt;
+	dfu->max_buf_size = 0;
+	dfu->free_entity = NULL;
+
+	/* Specific for mmc device */
+	if (strcmp(interface, "mmc") == 0) {
+		if (dfu_fill_entity_mmc(dfu, devstr, s))
+			return -1;
+	} else if (strcmp(interface, "mtd") == 0) {
+		if (dfu_fill_entity_mtd(dfu, devstr, s))
+			return -1;
+	} else if (strcmp(interface, "nand") == 0) {
+		if (dfu_fill_entity_nand(dfu, devstr, s))
+			return -1;
+	} else if (strcmp(interface, "ram") == 0) {
+		if (dfu_fill_entity_ram(dfu, devstr, s))
+			return -1;
+	} else if (strcmp(interface, "sf") == 0) {
+		if (dfu_fill_entity_sf(dfu, devstr, s))
+			return -1;
+	} else if (strcmp(interface, "virt") == 0) {
+		if (dfu_fill_entity_virt(dfu, devstr, s))
+			return -1;
+	} else {
+		printf("%s: Device %s not (yet) supported!\n",
+		       __func__,  interface);
+		return -1;
+	}
+	dfu_get_buf(dfu);
+
+	return 0;
+}
+
+void dfu_free_entities(void)
+{
+	struct dfu_entity *dfu, *p, *t = NULL;
+
+	dfu_free_buf();
+	list_for_each_entry_safe_reverse(dfu, p, &dfu_list, list) {
+		list_del(&dfu->list);
+		if (dfu->free_entity)
+			dfu->free_entity(dfu);
+		t = dfu;
+	}
+	if (t)
+		free(t);
+	INIT_LIST_HEAD(&dfu_list);
+
+	alt_num_cnt = 0;
+}
+
+int dfu_alt_init(int num, struct dfu_entity **dfu)
+{
+	char *s;
+	int ret;
+
+	dfu_alt_num = num;
+	debug("%s: dfu_alt_num=%d\n", __func__, dfu_alt_num);
+
+	dfu_hash_algo = NULL;
+	s = dfu_get_hash_algo();
+	if (s) {
+		ret = hash_lookup_algo(s, &dfu_hash_algo);
+		if (ret)
+			pr_err("Hash algorithm %s not supported\n", s);
+	}
+
+	*dfu = calloc(sizeof(struct dfu_entity), dfu_alt_num);
+	if (!*dfu)
+		return -1;
+
+	return 0;
+}
+
+int dfu_alt_add(struct dfu_entity *dfu, char *interface, char *devstr, char *s)
+{
+	struct dfu_entity *p_dfu;
+	int ret;
+
+	if (alt_num_cnt >= dfu_alt_num)
+		return -1;
+
+	p_dfu = &dfu[alt_num_cnt];
+	ret = dfu_fill_entity(p_dfu, s, alt_num_cnt, interface, devstr);
+	if (ret)
+		return -1;
+
+	list_add_tail(&p_dfu->list, &dfu_list);
+	alt_num_cnt++;
+
+	return 0;
+}
+
+int dfu_config_entities(char *env, char *interface, char *devstr)
+{
+	struct dfu_entity *dfu;
+	int i, ret;
+	char *s;
+
+	ret = dfu_alt_init(dfu_find_alt_num(env), &dfu);
+	if (ret)
+		return -1;
+
+	for (i = 0; i < dfu_alt_num; i++) {
+		s = strsep(&env, ";");
+		ret = dfu_alt_add(dfu, interface, devstr, s);
+		if (ret) {
+			/* We will free "dfu" in dfu_free_entities() */
+			return -1;
+		}
+	}
+
+	return 0;
+}
+
+const char *dfu_get_dev_type(enum dfu_device_type t)
+{
+	const char *const dev_t[] = {NULL, "eMMC", "OneNAND", "NAND", "RAM",
+				     "SF", "MTD", "VIRT"};
+	return dev_t[t];
+}
+
+const char *dfu_get_layout(enum dfu_layout l)
+{
+	const char *const dfu_layout[] = {NULL, "RAW_ADDR", "FAT", "EXT2",
+					  "EXT3", "EXT4", "RAM_ADDR" };
+	return dfu_layout[l];
+}
+
+void dfu_show_entities(void)
+{
+	struct dfu_entity *dfu;
+
+	puts("DFU alt settings list:\n");
+
+	list_for_each_entry(dfu, &dfu_list, list) {
+		printf("dev: %s alt: %d name: %s layout: %s\n",
+		       dfu_get_dev_type(dfu->dev_type), dfu->alt,
+		       dfu->name, dfu_get_layout(dfu->layout));
+	}
+}
+
+int dfu_get_alt_number(void)
+{
+	return dfu_alt_num;
+}
+
+struct dfu_entity *dfu_get_entity(int alt)
+{
+	struct dfu_entity *dfu;
+
+	list_for_each_entry(dfu, &dfu_list, list) {
+		if (dfu->alt == alt)
+			return dfu;
+	}
+
+	return NULL;
+}
+
+int dfu_get_alt(char *name)
+{
+	struct dfu_entity *dfu;
+	char *str;
+
+	list_for_each_entry(dfu, &dfu_list, list) {
+		if (dfu->name[0] != '/') {
+			if (!strncmp(dfu->name, name, strlen(dfu->name)))
+				return dfu->alt;
+		} else {
+			/*
+			 * One must also consider absolute path
+			 * (/boot/bin/uImage) available at dfu->name when
+			 * compared "plain" file name (uImage)
+			 *
+			 * It is the case for e.g. thor gadget where lthor SW
+			 * sends only the file name, so only the very last part
+			 * of path must be checked for equality
+			 */
+
+			str = strstr(dfu->name, name);
+			if (!str)
+				continue;
+
+			/*
+			 * Check if matching substring is the last element of
+			 * dfu->name (uImage)
+			 */
+			if (strlen(dfu->name) ==
+			    ((str - dfu->name) + strlen(name)))
+				return dfu->alt;
+		}
+	}
+
+	return -ENODEV;
+}
+
+int dfu_write_from_mem_addr(struct dfu_entity *dfu, void *buf, int size)
+{
+	unsigned long dfu_buf_size, write, left = size;
+	int i, ret = 0;
+	void *dp = buf;
+
+	/*
+	 * Here we must call dfu_get_buf(dfu) first to be sure that dfu_buf_size
+	 * has been properly initialized - e.g. if "dfu_bufsiz" has been taken
+	 * into account.
+	 */
+	dfu_get_buf(dfu);
+	dfu_buf_size = dfu_get_buf_size();
+	debug("%s: dfu buf size: %lu\n", __func__, dfu_buf_size);
+
+	for (i = 0; left > 0; i++) {
+		write = min(dfu_buf_size, left);
+
+		debug("%s: dp: 0x%p left: %lu write: %lu\n", __func__,
+		      dp, left, write);
+		ret = dfu_write(dfu, dp, write, i);
+		if (ret) {
+			pr_err("DFU write failed\n");
+			return ret;
+		}
+
+		dp += write;
+		left -= write;
+	}
+
+	ret = dfu_flush(dfu, NULL, 0, i);
+	if (ret)
+		pr_err("DFU flush failed!");
+
+	return ret;
+}

source/bootloader/u-boot-2020.01/drivers/dfu/dfu_mmc.c

@@ -0,0 +1,410 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * dfu.c -- DFU back-end routines
+ *
+ * Copyright (C) 2012 Samsung Electronics
+ * author: Lukasz Majewski <l.majewski@samsung.com>
+ */
+
+#include <common.h>
+#include <malloc.h>
+#include <errno.h>
+#include <div64.h>
+#include <dfu.h>
+#include <ext4fs.h>
+#include <fat.h>
+#include <mmc.h>
+
+static unsigned char *dfu_file_buf;
+static u64 dfu_file_buf_len;
+static long dfu_file_buf_filled;
+
+static int mmc_block_op(enum dfu_op op, struct dfu_entity *dfu,
+			u64 offset, void *buf, long *len)
+{
+	struct mmc *mmc;
+	u32 blk_start, blk_count, n = 0;
+	int ret, part_num_bkp = 0;
+
+	mmc = find_mmc_device(dfu->data.mmc.dev_num);
+	if (!mmc) {
+		pr_err("Device MMC %d - not found!", dfu->data.mmc.dev_num);
+		return -ENODEV;
+	}
+
+	/*
+	 * We must ensure that we work in lba_blk_size chunks, so ALIGN
+	 * this value.
+	 */
+	*len = ALIGN(*len, dfu->data.mmc.lba_blk_size);
+
+	blk_start = dfu->data.mmc.lba_start +
+			(u32)lldiv(offset, dfu->data.mmc.lba_blk_size);
+	blk_count = *len / dfu->data.mmc.lba_blk_size;
+	if (blk_start + blk_count >
+			dfu->data.mmc.lba_start + dfu->data.mmc.lba_size) {
+		puts("Request would exceed designated area!\n");
+		return -EINVAL;
+	}
+
+	if (dfu->data.mmc.hw_partition >= 0) {
+		part_num_bkp = mmc_get_blk_desc(mmc)->hwpart;
+		ret = blk_select_hwpart_devnum(IF_TYPE_MMC,
+					       dfu->data.mmc.dev_num,
+					       dfu->data.mmc.hw_partition);
+		if (ret)
+			return ret;
+	}
+
+	debug("%s: %s dev: %d start: %d cnt: %d buf: 0x%p\n", __func__,
+	      op == DFU_OP_READ ? "MMC READ" : "MMC WRITE",
+	      dfu->data.mmc.dev_num, blk_start, blk_count, buf);
+	switch (op) {
+	case DFU_OP_READ:
+		n = blk_dread(mmc_get_blk_desc(mmc), blk_start, blk_count, buf);
+		break;
+	case DFU_OP_WRITE:
+		n = blk_dwrite(mmc_get_blk_desc(mmc), blk_start, blk_count,
+			       buf);
+		break;
+	default:
+		pr_err("Operation not supported\n");
+	}
+
+	if (n != blk_count) {
+		pr_err("MMC operation failed");
+		if (dfu->data.mmc.hw_partition >= 0)
+			blk_select_hwpart_devnum(IF_TYPE_MMC,
+						 dfu->data.mmc.dev_num,
+						 part_num_bkp);
+		return -EIO;
+	}
+
+	if (dfu->data.mmc.hw_partition >= 0) {
+		ret = blk_select_hwpart_devnum(IF_TYPE_MMC,
+					       dfu->data.mmc.dev_num,
+					       part_num_bkp);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int mmc_file_buffer(struct dfu_entity *dfu, void *buf, long *len)
+{
+	if (dfu_file_buf_len + *len > CONFIG_SYS_DFU_MAX_FILE_SIZE) {
+		dfu_file_buf_len = 0;
+		return -EINVAL;
+	}
+
+	/* Add to the current buffer. */
+	memcpy(dfu_file_buf + dfu_file_buf_len, buf, *len);
+	dfu_file_buf_len += *len;
+
+	return 0;
+}
+
+static int mmc_file_op(enum dfu_op op, struct dfu_entity *dfu,
+			void *buf, u64 *len)
+{
+	char dev_part_str[8];
+	int ret;
+	int fstype;
+	loff_t size = 0;
+
+	switch (dfu->layout) {
+	case DFU_FS_FAT:
+		fstype = FS_TYPE_FAT;
+		break;
+	case DFU_FS_EXT4:
+		fstype = FS_TYPE_EXT;
+		break;
+	default:
+		printf("%s: Layout (%s) not (yet) supported!\n", __func__,
+		       dfu_get_layout(dfu->layout));
+		return -1;
+	}
+
+	snprintf(dev_part_str, sizeof(dev_part_str), "%d:%d",
+		 dfu->data.mmc.dev, dfu->data.mmc.part);
+
+	ret = fs_set_blk_dev("mmc", dev_part_str, fstype);
+	if (ret) {
+		puts("dfu: fs_set_blk_dev error!\n");
+		return ret;
+	}
+
+	switch (op) {
+	case DFU_OP_READ:
+		ret = fs_read(dfu->name, (size_t)buf, 0, 0, &size);
+		if (ret) {
+			puts("dfu: fs_read error!\n");
+			return ret;
+		}
+		*len = size;
+		break;
+	case DFU_OP_WRITE:
+		ret = fs_write(dfu->name, (size_t)buf, 0, *len, &size);
+		if (ret) {
+			puts("dfu: fs_write error!\n");
+			return ret;
+		}
+		break;
+	case DFU_OP_SIZE:
+		ret = fs_size(dfu->name, &size);
+		if (ret) {
+			puts("dfu: fs_size error!\n");
+			return ret;
+		}
+		*len = size;
+		break;
+	default:
+		return -1;
+	}
+
+	return ret;
+}
+
+int dfu_write_medium_mmc(struct dfu_entity *dfu,
+		u64 offset, void *buf, long *len)
+{
+	int ret = -1;
+
+	switch (dfu->layout) {
+	case DFU_RAW_ADDR:
+		ret = mmc_block_op(DFU_OP_WRITE, dfu, offset, buf, len);
+		break;
+	case DFU_FS_FAT:
+	case DFU_FS_EXT4:
+		ret = mmc_file_buffer(dfu, buf, len);
+		break;
+	default:
+		printf("%s: Layout (%s) not (yet) supported!\n", __func__,
+		       dfu_get_layout(dfu->layout));
+	}
+
+	return ret;
+}
+
+int dfu_flush_medium_mmc(struct dfu_entity *dfu)
+{
+	int ret = 0;
+
+	if (dfu->layout != DFU_RAW_ADDR) {
+		/* Do stuff here. */
+		ret = mmc_file_op(DFU_OP_WRITE, dfu, dfu_file_buf,
+				&dfu_file_buf_len);
+
+		/* Now that we're done */
+		dfu_file_buf_len = 0;
+	}
+
+	return ret;
+}
+
+int dfu_get_medium_size_mmc(struct dfu_entity *dfu, u64 *size)
+{
+	int ret;
+
+	switch (dfu->layout) {
+	case DFU_RAW_ADDR:
+		*size = dfu->data.mmc.lba_size * dfu->data.mmc.lba_blk_size;
+		return 0;
+	case DFU_FS_FAT:
+	case DFU_FS_EXT4:
+		dfu_file_buf_filled = -1;
+		ret = mmc_file_op(DFU_OP_SIZE, dfu, NULL, size);
+		if (ret < 0)
+			return ret;
+		if (*size > CONFIG_SYS_DFU_MAX_FILE_SIZE)
+			return -1;
+		return 0;
+	default:
+		printf("%s: Layout (%s) not (yet) supported!\n", __func__,
+		       dfu_get_layout(dfu->layout));
+		return -1;
+	}
+}
+
+static int mmc_file_unbuffer(struct dfu_entity *dfu, u64 offset, void *buf,
+			     long *len)
+{
+	int ret;
+	u64 file_len;
+
+	if (dfu_file_buf_filled == -1) {
+		ret = mmc_file_op(DFU_OP_READ, dfu, dfu_file_buf, &file_len);
+		if (ret < 0)
+			return ret;
+		dfu_file_buf_filled = file_len;
+	}
+	if (offset + *len > dfu_file_buf_filled)
+		return -EINVAL;
+
+	/* Add to the current buffer. */
+	memcpy(buf, dfu_file_buf + offset, *len);
+
+	return 0;
+}
+
+int dfu_read_medium_mmc(struct dfu_entity *dfu, u64 offset, void *buf,
+		long *len)
+{
+	int ret = -1;
+
+	switch (dfu->layout) {
+	case DFU_RAW_ADDR:
+		ret = mmc_block_op(DFU_OP_READ, dfu, offset, buf, len);
+		break;
+	case DFU_FS_FAT:
+	case DFU_FS_EXT4:
+		ret = mmc_file_unbuffer(dfu, offset, buf, len);
+		break;
+	default:
+		printf("%s: Layout (%s) not (yet) supported!\n", __func__,
+		       dfu_get_layout(dfu->layout));
+	}
+
+	return ret;
+}
+
+void dfu_free_entity_mmc(struct dfu_entity *dfu)
+{
+	if (dfu_file_buf) {
+		free(dfu_file_buf);
+		dfu_file_buf = NULL;
+	}
+}
+
+/*
+ * @param s Parameter string containing space-separated arguments:
+ *	1st:
+ *		raw	(raw read/write)
+ *		fat	(files)
+ *		ext4	(^)
+ *		part	(partition image)
+ *	2nd and 3rd:
+ *		lba_start and lba_size, for raw write
+ *		mmc_dev and mmc_part, for filesystems and part
+ *	4th (optional):
+ *		mmcpart <num> (access to HW eMMC partitions)
+ */
+int dfu_fill_entity_mmc(struct dfu_entity *dfu, char *devstr, char *s)
+{
+	const char *entity_type;
+	size_t second_arg;
+	size_t third_arg;
+
+	struct mmc *mmc;
+
+	const char *argv[3];
+	const char **parg = argv;
+
+	dfu->data.mmc.dev_num = simple_strtoul(devstr, NULL, 10);
+
+	for (; parg < argv + sizeof(argv) / sizeof(*argv); ++parg) {
+		*parg = strsep(&s, " ");
+		if (*parg == NULL) {
+			pr_err("Invalid number of arguments.\n");
+			return -ENODEV;
+		}
+	}
+
+	entity_type = argv[0];
+	/*
+	 * Base 0 means we'll accept (prefixed with 0x or 0) base 16, 8,
+	 * with default 10.
+	 */
+	second_arg = simple_strtoul(argv[1], NULL, 0);
+	third_arg = simple_strtoul(argv[2], NULL, 0);
+
+	mmc = find_mmc_device(dfu->data.mmc.dev_num);
+	if (mmc == NULL) {
+		pr_err("Couldn't find MMC device no. %d.\n",
+		      dfu->data.mmc.dev_num);
+		return -ENODEV;
+	}
+
+	if (mmc_init(mmc)) {
+		pr_err("Couldn't init MMC device.\n");
+		return -ENODEV;
+	}
+
+	dfu->data.mmc.hw_partition = -EINVAL;
+	if (!strcmp(entity_type, "raw")) {
+		dfu->layout			= DFU_RAW_ADDR;
+		dfu->data.mmc.lba_start		= second_arg;
+		dfu->data.mmc.lba_size		= third_arg;
+		dfu->data.mmc.lba_blk_size	= mmc->read_bl_len;
+
+		/*
+		 * Check for an extra entry at dfu_alt_info env variable
+		 * specifying the mmc HW defined partition number
+		 */
+		if (s)
+			if (!strcmp(strsep(&s, " "), "mmcpart"))
+				dfu->data.mmc.hw_partition =
+					simple_strtoul(s, NULL, 0);
+
+	} else if (!strcmp(entity_type, "part")) {
+		disk_partition_t partinfo;
+		struct blk_desc *blk_dev = mmc_get_blk_desc(mmc);
+		int mmcdev = second_arg;
+		int mmcpart = third_arg;
+		int offset = 0;
+
+		if (part_get_info(blk_dev, mmcpart, &partinfo) != 0) {
+			pr_err("Couldn't find part #%d on mmc device #%d\n",
+			      mmcpart, mmcdev);
+			return -ENODEV;
+		}
+
+		/*
+		 * Check for an extra entry at dfu_alt_info env variable
+		 * specifying the mmc HW defined partition number
+		 */
+		if (s)
+			if (!strcmp(strsep(&s, " "), "offset"))
+				offset = simple_strtoul(s, NULL, 0);
+
+		dfu->layout			= DFU_RAW_ADDR;
+		dfu->data.mmc.lba_start		= partinfo.start + offset;
+		dfu->data.mmc.lba_size		= partinfo.size-offset;
+		dfu->data.mmc.lba_blk_size	= partinfo.blksz;
+	} else if (!strcmp(entity_type, "fat")) {
+		dfu->layout = DFU_FS_FAT;
+	} else if (!strcmp(entity_type, "ext4")) {
+		dfu->layout = DFU_FS_EXT4;
+	} else {
+		pr_err("Memory layout (%s) not supported!\n", entity_type);
+		return -ENODEV;
+	}
+
+	/* if it's NOT a raw write */
+	if (strcmp(entity_type, "raw")) {
+		dfu->data.mmc.dev = second_arg;
+		dfu->data.mmc.part = third_arg;
+	}
+
+	dfu->dev_type = DFU_DEV_MMC;
+	dfu->get_medium_size = dfu_get_medium_size_mmc;
+	dfu->read_medium = dfu_read_medium_mmc;
+	dfu->write_medium = dfu_write_medium_mmc;
+	dfu->flush_medium = dfu_flush_medium_mmc;
+	dfu->inited = 0;
+	dfu->free_entity = dfu_free_entity_mmc;
+
+	/* Check if file buffer is ready */
+	if (!dfu_file_buf) {
+		dfu_file_buf = memalign(CONFIG_SYS_CACHELINE_SIZE,
+					CONFIG_SYS_DFU_MAX_FILE_SIZE);
+		if (!dfu_file_buf) {
+			pr_err("Could not memalign 0x%x bytes",
+			      CONFIG_SYS_DFU_MAX_FILE_SIZE);
+			return -ENOMEM;
+		}
+	}
+
+	return 0;
+}

source/bootloader/u-boot-2020.01/drivers/dfu/dfu_mtd.c

@@ -0,0 +1,311 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * dfu_mtd.c -- DFU for MTD device.
+ *
+ * Copyright (C) 2019,STMicroelectronics - All Rights Reserved
+ *
+ * Based on dfu_nand.c
+ */
+
+#include <common.h>
+#include <dfu.h>
+#include <mtd.h>
+#include <jffs2/load_kernel.h>
+
+static bool mtd_is_aligned_with_block_size(struct mtd_info *mtd, u64 size)
+{
+	return !do_div(size, mtd->erasesize);
+}
+
+static int mtd_block_op(enum dfu_op op, struct dfu_entity *dfu,
+			u64 offset, void *buf, long *len)
+{
+	u64 off, lim, remaining;
+	struct mtd_info *mtd = dfu->data.mtd.info;
+	struct mtd_oob_ops io_op = {};
+	int ret = 0;
+	bool has_pages = mtd->type == MTD_NANDFLASH ||
+			 mtd->type == MTD_MLCNANDFLASH;
+
+	/* if buf == NULL return total size of the area */
+	if (!buf) {
+		*len = dfu->data.mtd.size;
+		return 0;
+	}
+
+	off = dfu->data.mtd.start + offset + dfu->bad_skip;
+	lim = dfu->data.mtd.start + dfu->data.mtd.size;
+
+	if (off >= lim) {
+		printf("Limit reached 0x%llx\n", lim);
+		*len = 0;
+		return op == DFU_OP_READ ? 0 : -EIO;
+	}
+	/* limit request with the available size */
+	if (off + *len >= lim)
+		*len = lim - off;
+
+	if (!mtd_is_aligned_with_block_size(mtd, off)) {
+		printf("Offset not aligned with a block (0x%x)\n",
+		       mtd->erasesize);
+		return 0;
+	}
+
+	/* first erase */
+	if (op == DFU_OP_WRITE) {
+		struct erase_info erase_op = {};
+
+		remaining = round_up(*len, mtd->erasesize);
+		erase_op.mtd = mtd;
+		erase_op.addr = off;
+		erase_op.len = mtd->erasesize;
+		erase_op.scrub = 0;
+
+		while (remaining) {
+			if (erase_op.addr + remaining > lim) {
+				printf("Limit reached 0x%llx while erasing at offset 0x%llx\n",
+				       lim, off);
+				return -EIO;
+			}
+
+			ret = mtd_erase(mtd, &erase_op);
+
+			if (ret) {
+				/* Abort if its not a bad block error */
+				if (ret != -EIO) {
+					printf("Failure while erasing at offset 0x%llx\n",
+					       erase_op.fail_addr);
+					return 0;
+				}
+				printf("Skipping bad block at 0x%08llx\n",
+				       erase_op.addr);
+			} else {
+				remaining -= mtd->erasesize;
+			}
+
+			/* Continue erase behind bad block */
+			erase_op.addr += mtd->erasesize;
+		}
+	}
+
+	io_op.mode = MTD_OPS_AUTO_OOB;
+	io_op.len = *len;
+	if (has_pages && io_op.len > mtd->writesize)
+		io_op.len = mtd->writesize;
+	io_op.ooblen = 0;
+	io_op.datbuf = buf;
+	io_op.oobbuf = NULL;
+
+	/* Loop over to do the actual read/write */
+	remaining = *len;
+	while (remaining) {
+		if (off + remaining > lim) {
+			printf("Limit reached 0x%llx while %s at offset 0x%llx\n",
+			       lim, op == DFU_OP_READ ? "reading" : "writing",
+			       off);
+			if (op == DFU_OP_READ) {
+				*len -= remaining;
+				return 0;
+			} else {
+				return -EIO;
+			}
+		}
+
+		/* Skip the block if it is bad */
+		if (mtd_is_aligned_with_block_size(mtd, off) &&
+		    mtd_block_isbad(mtd, off)) {
+			off += mtd->erasesize;
+			dfu->bad_skip += mtd->erasesize;
+			continue;
+		}
+
+		if (op == DFU_OP_READ)
+			ret = mtd_read_oob(mtd, off, &io_op);
+		else
+			ret = mtd_write_oob(mtd, off, &io_op);
+
+		if (ret) {
+			printf("Failure while %s at offset 0x%llx\n",
+			       op == DFU_OP_READ ? "reading" : "writing", off);
+			return -EIO;
+		}
+
+		off += io_op.retlen;
+		remaining -= io_op.retlen;
+		io_op.datbuf += io_op.retlen;
+		io_op.len = remaining;
+		if (has_pages && io_op.len > mtd->writesize)
+			io_op.len = mtd->writesize;
+	}
+
+	return ret;
+}
+
+static int dfu_get_medium_size_mtd(struct dfu_entity *dfu, u64 *size)
+{
+	*size = dfu->data.mtd.info->size;
+
+	return 0;
+}
+
+static int dfu_read_medium_mtd(struct dfu_entity *dfu, u64 offset, void *buf,
+			       long *len)
+{
+	int ret = -1;
+
+	switch (dfu->layout) {
+	case DFU_RAW_ADDR:
+		ret = mtd_block_op(DFU_OP_READ, dfu, offset, buf, len);
+		break;
+	default:
+		printf("%s: Layout (%s) not (yet) supported!\n", __func__,
+		       dfu_get_layout(dfu->layout));
+	}
+
+	return ret;
+}
+
+static int dfu_write_medium_mtd(struct dfu_entity *dfu,
+				u64 offset, void *buf, long *len)
+{
+	int ret = -1;
+
+	switch (dfu->layout) {
+	case DFU_RAW_ADDR:
+		ret = mtd_block_op(DFU_OP_WRITE, dfu, offset, buf, len);
+		break;
+	default:
+		printf("%s: Layout (%s) not (yet) supported!\n", __func__,
+		       dfu_get_layout(dfu->layout));
+	}
+
+	return ret;
+}
+
+static int dfu_flush_medium_mtd(struct dfu_entity *dfu)
+{
+	struct mtd_info *mtd = dfu->data.mtd.info;
+	u64 remaining;
+	int ret;
+
+	/* in case of ubi partition, erase rest of the partition */
+	if (dfu->data.nand.ubi) {
+		struct erase_info erase_op = {};
+
+		erase_op.mtd = dfu->data.mtd.info;
+		erase_op.addr = round_up(dfu->data.mtd.start + dfu->offset +
+					 dfu->bad_skip, mtd->erasesize);
+		erase_op.len = mtd->erasesize;
+		erase_op.scrub = 0;
+
+		remaining = dfu->data.mtd.start + dfu->data.mtd.size -
+			    erase_op.addr;
+
+		while (remaining) {
+			ret = mtd_erase(mtd, &erase_op);
+
+			if (ret) {
+				/* Abort if its not a bad block error */
+				if (ret != -EIO)
+					break;
+				printf("Skipping bad block at 0x%08llx\n",
+				       erase_op.addr);
+			}
+
+			/* Skip bad block and continue behind it */
+			erase_op.addr += mtd->erasesize;
+			remaining -= mtd->erasesize;
+		}
+	}
+	return 0;
+}
+
+static unsigned int dfu_polltimeout_mtd(struct dfu_entity *dfu)
+{
+	/*
+	 * Currently, Poll Timeout != 0 is only needed on nand
+	 * ubi partition, as sectors which are not used need
+	 * to be erased
+	 */
+	if (dfu->data.nand.ubi)
+		return DFU_MANIFEST_POLL_TIMEOUT;
+
+	return DFU_DEFAULT_POLL_TIMEOUT;
+}
+
+int dfu_fill_entity_mtd(struct dfu_entity *dfu, char *devstr, char *s)
+{
+	char *st;
+	struct mtd_info *mtd;
+	bool has_pages;
+	int ret, part;
+
+	mtd = get_mtd_device_nm(devstr);
+	if (IS_ERR_OR_NULL(mtd))
+		return -ENODEV;
+	put_mtd_device(mtd);
+
+	dfu->dev_type = DFU_DEV_MTD;
+	dfu->data.mtd.info = mtd;
+
+	has_pages = mtd->type == MTD_NANDFLASH || mtd->type == MTD_MLCNANDFLASH;
+	dfu->max_buf_size = has_pages ? mtd->erasesize : 0;
+
+	st = strsep(&s, " ");
+	if (!strcmp(st, "raw")) {
+		dfu->layout = DFU_RAW_ADDR;
+		dfu->data.mtd.start = simple_strtoul(s, &s, 16);
+		s++;
+		dfu->data.mtd.size = simple_strtoul(s, &s, 16);
+	} else if ((!strcmp(st, "part")) || (!strcmp(st, "partubi"))) {
+		char mtd_id[32];
+		struct mtd_device *mtd_dev;
+		u8 part_num;
+		struct part_info *pi;
+
+		dfu->layout = DFU_RAW_ADDR;
+
+		part = simple_strtoul(s, &s, 10);
+
+		sprintf(mtd_id, "%s,%d", devstr, part - 1);
+		printf("using id '%s'\n", mtd_id);
+
+		mtdparts_init();
+
+		ret = find_dev_and_part(mtd_id, &mtd_dev, &part_num, &pi);
+		if (ret != 0) {
+			printf("Could not locate '%s'\n", mtd_id);
+			return -1;
+		}
+
+		dfu->data.mtd.start = pi->offset;
+		dfu->data.mtd.size = pi->size;
+		if (!strcmp(st, "partubi"))
+			dfu->data.mtd.ubi = 1;
+	} else {
+		printf("%s: Memory layout (%s) not supported!\n", __func__, st);
+		return -1;
+	}
+
+	if (!mtd_is_aligned_with_block_size(mtd, dfu->data.mtd.start)) {
+		printf("Offset not aligned with a block (0x%x)\n",
+		       mtd->erasesize);
+		return -EINVAL;
+	}
+	if (!mtd_is_aligned_with_block_size(mtd, dfu->data.mtd.size)) {
+		printf("Size not aligned with a block (0x%x)\n",
+		       mtd->erasesize);
+		return -EINVAL;
+	}
+
+	dfu->get_medium_size = dfu_get_medium_size_mtd;
+	dfu->read_medium = dfu_read_medium_mtd;
+	dfu->write_medium = dfu_write_medium_mtd;
+	dfu->flush_medium = dfu_flush_medium_mtd;
+	dfu->poll_timeout = dfu_polltimeout_mtd;
+
+	/* initial state */
+	dfu->inited = 0;
+
+	return 0;
+}

source/bootloader/u-boot-2020.01/drivers/dfu/dfu_nand.c

@@ -0,0 +1,246 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * dfu_nand.c -- DFU for NAND routines.
+ *
+ * Copyright (C) 2012-2013 Texas Instruments, Inc.
+ *
+ * Based on dfu_mmc.c which is:
+ * Copyright (C) 2012 Samsung Electronics
+ * author: Lukasz Majewski <l.majewski@samsung.com>
+ */
+
+#include <common.h>
+#include <malloc.h>
+#include <errno.h>
+#include <div64.h>
+#include <dfu.h>
+#include <linux/mtd/mtd.h>
+#include <jffs2/load_kernel.h>
+#include <nand.h>
+
+static int nand_block_op(enum dfu_op op, struct dfu_entity *dfu,
+			u64 offset, void *buf, long *len)
+{
+	loff_t start, lim;
+	size_t count, actual;
+	int ret;
+	struct mtd_info *mtd;
+
+	/* if buf == NULL return total size of the area */
+	if (buf == NULL) {
+		*len = dfu->data.nand.size;
+		return 0;
+	}
+
+	start = dfu->data.nand.start + offset + dfu->bad_skip;
+	lim = dfu->data.nand.start + dfu->data.nand.size - start;
+	count = *len;
+
+	mtd = get_nand_dev_by_index(nand_curr_device);
+
+	if (nand_curr_device < 0 ||
+	    nand_curr_device >= CONFIG_SYS_MAX_NAND_DEVICE ||
+	    !mtd) {
+		printf("%s: invalid nand device\n", __func__);
+		return -1;
+	}
+
+	if (op == DFU_OP_READ) {
+		ret = nand_read_skip_bad(mtd, start, &count, &actual,
+					 lim, buf);
+	} else {
+		nand_erase_options_t opts;
+
+		memset(&opts, 0, sizeof(opts));
+		opts.offset = start;
+		opts.length = count;
+		opts.spread = 1;
+		opts.quiet = 1;
+		opts.lim = lim;
+		/* first erase */
+		ret = nand_erase_opts(mtd, &opts);
+		if (ret)
+			return ret;
+		/* then write */
+		ret = nand_write_skip_bad(mtd, start, &count, &actual,
+					  lim, buf, WITH_WR_VERIFY);
+	}
+
+	if (ret != 0) {
+		printf("%s: nand_%s_skip_bad call failed at %llx!\n",
+		       __func__, op == DFU_OP_READ ? "read" : "write",
+		       start);
+		return ret;
+	}
+
+	/*
+	 * Find out where we stopped writing data.  This can be deeper into
+	 * the NAND than we expected due to having to skip bad blocks.  So
+	 * we must take this into account for the next write, if any.
+	 */
+	if (actual > count)
+		dfu->bad_skip += actual - count;
+
+	return ret;
+}
+
+static inline int nand_block_write(struct dfu_entity *dfu,
+		u64 offset, void *buf, long *len)
+{
+	return nand_block_op(DFU_OP_WRITE, dfu, offset, buf, len);
+}
+
+static inline int nand_block_read(struct dfu_entity *dfu,
+		u64 offset, void *buf, long *len)
+{
+	return nand_block_op(DFU_OP_READ, dfu, offset, buf, len);
+}
+
+static int dfu_write_medium_nand(struct dfu_entity *dfu,
+		u64 offset, void *buf, long *len)
+{
+	int ret = -1;
+
+	switch (dfu->layout) {
+	case DFU_RAW_ADDR:
+		ret = nand_block_write(dfu, offset, buf, len);
+		break;
+	default:
+		printf("%s: Layout (%s) not (yet) supported!\n", __func__,
+		       dfu_get_layout(dfu->layout));
+	}
+
+	return ret;
+}
+
+int dfu_get_medium_size_nand(struct dfu_entity *dfu, u64 *size)
+{
+	*size = dfu->data.nand.size;
+
+	return 0;
+}
+
+static int dfu_read_medium_nand(struct dfu_entity *dfu, u64 offset, void *buf,
+		long *len)
+{
+	int ret = -1;
+
+	switch (dfu->layout) {
+	case DFU_RAW_ADDR:
+		ret = nand_block_read(dfu, offset, buf, len);
+		break;
+	default:
+		printf("%s: Layout (%s) not (yet) supported!\n", __func__,
+		       dfu_get_layout(dfu->layout));
+	}
+
+	return ret;
+}
+
+static int dfu_flush_medium_nand(struct dfu_entity *dfu)
+{
+	int ret = 0;
+	u64 off;
+
+	/* in case of ubi partition, erase rest of the partition */
+	if (dfu->data.nand.ubi) {
+		struct mtd_info *mtd = get_nand_dev_by_index(nand_curr_device);
+		nand_erase_options_t opts;
+
+		if (nand_curr_device < 0 ||
+		    nand_curr_device >= CONFIG_SYS_MAX_NAND_DEVICE ||
+		    !mtd) {
+			printf("%s: invalid nand device\n", __func__);
+			return -1;
+		}
+
+		memset(&opts, 0, sizeof(opts));
+		off = dfu->offset;
+		if ((off & (mtd->erasesize - 1)) != 0) {
+			/*
+			 * last write ended with unaligned length
+			 * sector is erased, jump to next
+			 */
+			off = off & ~((mtd->erasesize - 1));
+			off += mtd->erasesize;
+		}
+		opts.offset = dfu->data.nand.start + off +
+				dfu->bad_skip;
+		opts.length = dfu->data.nand.start +
+				dfu->data.nand.size - opts.offset;
+		ret = nand_erase_opts(mtd, &opts);
+		if (ret != 0)
+			printf("Failure erase: %d\n", ret);
+	}
+
+	return ret;
+}
+
+unsigned int dfu_polltimeout_nand(struct dfu_entity *dfu)
+{
+	/*
+	 * Currently, Poll Timeout != 0 is only needed on nand
+	 * ubi partition, as the not used sectors need an erase
+	 */
+	if (dfu->data.nand.ubi)
+		return DFU_MANIFEST_POLL_TIMEOUT;
+
+	return DFU_DEFAULT_POLL_TIMEOUT;
+}
+
+int dfu_fill_entity_nand(struct dfu_entity *dfu, char *devstr, char *s)
+{
+	char *st;
+	int ret, dev, part;
+
+	dfu->data.nand.ubi = 0;
+	dfu->dev_type = DFU_DEV_NAND;
+	st = strsep(&s, " ");
+	if (!strcmp(st, "raw")) {
+		dfu->layout = DFU_RAW_ADDR;
+		dfu->data.nand.start = simple_strtoul(s, &s, 16);
+		s++;
+		dfu->data.nand.size = simple_strtoul(s, &s, 16);
+	} else if ((!strcmp(st, "part")) || (!strcmp(st, "partubi"))) {
+		char mtd_id[32];
+		struct mtd_device *mtd_dev;
+		u8 part_num;
+		struct part_info *pi;
+
+		dfu->layout = DFU_RAW_ADDR;
+
+		dev = simple_strtoul(s, &s, 10);
+		s++;
+		part = simple_strtoul(s, &s, 10);
+
+		sprintf(mtd_id, "%s%d,%d", "nand", dev, part - 1);
+		debug("using id '%s'\n", mtd_id);
+
+		mtdparts_init();
+
+		ret = find_dev_and_part(mtd_id, &mtd_dev, &part_num, &pi);
+		if (ret != 0) {
+			printf("Could not locate '%s'\n", mtd_id);
+			return -1;
+		}
+
+		dfu->data.nand.start = pi->offset;
+		dfu->data.nand.size = pi->size;
+		if (!strcmp(st, "partubi"))
+			dfu->data.nand.ubi = 1;
+	} else {
+		printf("%s: Memory layout (%s) not supported!\n", __func__, st);
+		return -1;
+	}
+
+	dfu->get_medium_size = dfu_get_medium_size_nand;
+	dfu->read_medium = dfu_read_medium_nand;
+	dfu->write_medium = dfu_write_medium_nand;
+	dfu->flush_medium = dfu_flush_medium_nand;
+	dfu->poll_timeout = dfu_polltimeout_nand;
+
+	/* initial state */
+	dfu->inited = 0;
+
+	return 0;
+}

source/bootloader/u-boot-2020.01/drivers/dfu/dfu_ram.c

@@ -0,0 +1,86 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2013
+ * Afzal Mohammed <afzal.mohd.ma@gmail.com>
+ *
+ * Reference: dfu_mmc.c
+ * Copyright (C) 2012 Samsung Electronics
+ * author: Lukasz Majewski <l.majewski@samsung.com>
+ */
+
+#include <common.h>
+#include <malloc.h>
+#include <errno.h>
+#include <dfu.h>
+
+static int dfu_transfer_medium_ram(enum dfu_op op, struct dfu_entity *dfu,
+				   u64 offset, void *buf, long *len)
+{
+	if (dfu->layout != DFU_RAM_ADDR) {
+		pr_err("unsupported layout: %s\n", dfu_get_layout(dfu->layout));
+		return  -EINVAL;
+	}
+
+	if (offset > dfu->data.ram.size) {
+		pr_err("request exceeds allowed area\n");
+		return -EINVAL;
+	}
+
+	if (op == DFU_OP_WRITE)
+		memcpy(dfu->data.ram.start + offset, buf, *len);
+	else
+		memcpy(buf, dfu->data.ram.start + offset, *len);
+
+	return 0;
+}
+
+static int dfu_write_medium_ram(struct dfu_entity *dfu, u64 offset,
+				void *buf, long *len)
+{
+	return dfu_transfer_medium_ram(DFU_OP_WRITE, dfu, offset, buf, len);
+}
+
+int dfu_get_medium_size_ram(struct dfu_entity *dfu, u64 *size)
+{
+	*size = dfu->data.ram.size;
+
+	return 0;
+}
+
+static int dfu_read_medium_ram(struct dfu_entity *dfu, u64 offset,
+			       void *buf, long *len)
+{
+	return dfu_transfer_medium_ram(DFU_OP_READ, dfu, offset, buf, len);
+}
+
+int dfu_fill_entity_ram(struct dfu_entity *dfu, char *devstr, char *s)
+{
+	const char *argv[3];
+	const char **parg = argv;
+
+	for (; parg < argv + sizeof(argv) / sizeof(*argv); ++parg) {
+		*parg = strsep(&s, " ");
+		if (*parg == NULL) {
+			pr_err("Invalid number of arguments.\n");
+			return -ENODEV;
+		}
+	}
+
+	dfu->dev_type = DFU_DEV_RAM;
+	if (strcmp(argv[0], "ram")) {
+		pr_err("unsupported device: %s\n", argv[0]);
+		return -ENODEV;
+	}
+
+	dfu->layout = DFU_RAM_ADDR;
+	dfu->data.ram.start = (void *)simple_strtoul(argv[1], NULL, 16);
+	dfu->data.ram.size = simple_strtoul(argv[2], NULL, 16);
+
+	dfu->write_medium = dfu_write_medium_ram;
+	dfu->get_medium_size = dfu_get_medium_size_ram;
+	dfu->read_medium = dfu_read_medium_ram;
+
+	dfu->inited = 0;
+
+	return 0;
+}

source/bootloader/u-boot-2020.01/drivers/dfu/dfu_sf.c

@@ -0,0 +1,205 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
+ */
+
+#include <common.h>
+#include <malloc.h>
+#include <errno.h>
+#include <div64.h>
+#include <dfu.h>
+#include <spi.h>
+#include <spi_flash.h>
+#include <jffs2/load_kernel.h>
+#include <linux/mtd/mtd.h>
+
+static int dfu_get_medium_size_sf(struct dfu_entity *dfu, u64 *size)
+{
+	*size = dfu->data.sf.size;
+
+	return 0;
+}
+
+static int dfu_read_medium_sf(struct dfu_entity *dfu, u64 offset, void *buf,
+			      long *len)
+{
+	return spi_flash_read(dfu->data.sf.dev, dfu->data.sf.start + offset,
+		*len, buf);
+}
+
+static u64 find_sector(struct dfu_entity *dfu, u64 start, u64 offset)
+{
+	return (lldiv((start + offset), dfu->data.sf.dev->sector_size)) *
+		dfu->data.sf.dev->sector_size;
+}
+
+static int dfu_write_medium_sf(struct dfu_entity *dfu,
+			       u64 offset, void *buf, long *len)
+{
+	int ret;
+
+	ret = spi_flash_erase(dfu->data.sf.dev,
+			      find_sector(dfu, dfu->data.sf.start, offset),
+			      dfu->data.sf.dev->sector_size);
+	if (ret)
+		return ret;
+
+	ret = spi_flash_write(dfu->data.sf.dev, dfu->data.sf.start + offset,
+			      *len, buf);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+static int dfu_flush_medium_sf(struct dfu_entity *dfu)
+{
+	u64 off, length;
+
+	if (!CONFIG_IS_ENABLED(DFU_SF_PART) || !dfu->data.sf.ubi)
+		return 0;
+
+	/* in case of ubi partition, erase rest of the partition */
+	off = find_sector(dfu, dfu->data.sf.start, dfu->offset);
+	/* last write ended with unaligned length jump to next */
+	if (off != dfu->data.sf.start + dfu->offset)
+		off += dfu->data.sf.dev->sector_size;
+	length = dfu->data.sf.start + dfu->data.sf.size - off;
+	if (length)
+		return spi_flash_erase(dfu->data.sf.dev, off, length);
+
+	return 0;
+}
+
+static unsigned int dfu_polltimeout_sf(struct dfu_entity *dfu)
+{
+	/*
+	 * Currently, Poll Timeout != 0 is only needed on nand
+	 * ubi partition, as sectors which are not used need
+	 * to be erased
+	 */
+	if (CONFIG_IS_ENABLED(DFU_SF_PART) && dfu->data.sf.ubi)
+		return DFU_MANIFEST_POLL_TIMEOUT;
+
+	return DFU_DEFAULT_POLL_TIMEOUT;
+}
+
+static void dfu_free_entity_sf(struct dfu_entity *dfu)
+{
+	spi_flash_free(dfu->data.sf.dev);
+}
+
+static struct spi_flash *parse_dev(char *devstr)
+{
+	unsigned int bus;
+	unsigned int cs;
+	unsigned int speed = CONFIG_SF_DEFAULT_SPEED;
+	unsigned int mode = CONFIG_SF_DEFAULT_MODE;
+	char *s, *endp;
+	struct spi_flash *dev;
+
+	s = strsep(&devstr, ":");
+	if (!s || !*s || (bus = simple_strtoul(s, &endp, 0), *endp)) {
+		printf("Invalid SPI bus %s\n", s);
+		return NULL;
+	}
+
+	s = strsep(&devstr, ":");
+	if (!s || !*s || (cs = simple_strtoul(s, &endp, 0), *endp)) {
+		printf("Invalid SPI chip-select %s\n", s);
+		return NULL;
+	}
+
+	s = strsep(&devstr, ":");
+	if (s && *s) {
+		speed = simple_strtoul(s, &endp, 0);
+		if (*endp || !speed) {
+			printf("Invalid SPI speed %s\n", s);
+			return NULL;
+		}
+	}
+
+	s = strsep(&devstr, ":");
+	if (s && *s) {
+		mode = simple_strtoul(s, &endp, 0);
+		if (*endp || mode > 3) {
+			printf("Invalid SPI mode %s\n", s);
+			return NULL;
+		}
+	}
+
+	dev = spi_flash_probe(bus, cs, speed, mode);
+	if (!dev) {
+		printf("Failed to create SPI flash at %d:%d:%d:%d\n",
+		       bus, cs, speed, mode);
+		return NULL;
+	}
+
+	return dev;
+}
+
+int dfu_fill_entity_sf(struct dfu_entity *dfu, char *devstr, char *s)
+{
+	char *st;
+	char *devstr_bkup = strdup(devstr);
+
+	dfu->data.sf.dev = parse_dev(devstr_bkup);
+	free(devstr_bkup);
+	if (!dfu->data.sf.dev)
+		return -ENODEV;
+
+	dfu->dev_type = DFU_DEV_SF;
+	dfu->max_buf_size = dfu->data.sf.dev->sector_size;
+
+	st = strsep(&s, " ");
+	if (!strcmp(st, "raw")) {
+		dfu->layout = DFU_RAW_ADDR;
+		dfu->data.sf.start = simple_strtoul(s, &s, 16);
+		s++;
+		dfu->data.sf.size = simple_strtoul(s, &s, 16);
+	} else if (CONFIG_IS_ENABLED(DFU_SF_PART) &&
+		   (!strcmp(st, "part") || !strcmp(st, "partubi"))) {
+		char mtd_id[32];
+		struct mtd_device *mtd_dev;
+		u8 part_num;
+		struct part_info *pi;
+		int ret, dev, part;
+
+		dfu->layout = DFU_RAW_ADDR;
+
+		dev = simple_strtoul(s, &s, 10);
+		s++;
+		part = simple_strtoul(s, &s, 10);
+
+		sprintf(mtd_id, "%s%d,%d", "nor", dev, part - 1);
+		printf("using id '%s'\n", mtd_id);
+
+		mtdparts_init();
+
+		ret = find_dev_and_part(mtd_id, &mtd_dev, &part_num, &pi);
+		if (ret != 0) {
+			printf("Could not locate '%s'\n", mtd_id);
+			return -1;
+		}
+		dfu->data.sf.start = pi->offset;
+		dfu->data.sf.size = pi->size;
+		if (!strcmp(st, "partubi"))
+			dfu->data.sf.ubi = 1;
+	} else {
+		printf("%s: Memory layout (%s) not supported!\n", __func__, st);
+		spi_flash_free(dfu->data.sf.dev);
+		return -1;
+	}
+
+	dfu->get_medium_size = dfu_get_medium_size_sf;
+	dfu->read_medium = dfu_read_medium_sf;
+	dfu->write_medium = dfu_write_medium_sf;
+	dfu->flush_medium = dfu_flush_medium_sf;
+	dfu->poll_timeout = dfu_polltimeout_sf;
+	dfu->free_entity = dfu_free_entity_sf;
+
+	/* initial state */
+	dfu->inited = 0;
+
+	return 0;
+}

source/bootloader/u-boot-2020.01/drivers/dfu/dfu_tftp.c

@@ -0,0 +1,64 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2015
+ * Lukasz Majewski <l.majewski@majess.pl>
+ */
+
+#include <common.h>
+#include <malloc.h>
+#include <errno.h>
+#include <dfu.h>
+
+int dfu_tftp_write(char *dfu_entity_name, unsigned int addr, unsigned int len,
+		   char *interface, char *devstring)
+{
+	char *s, *sb;
+	int alt_setting_num, ret;
+	struct dfu_entity *dfu;
+
+	debug("%s: name: %s addr: 0x%x len: %d device: %s:%s\n", __func__,
+	      dfu_entity_name, addr, len, interface, devstring);
+
+	ret = dfu_init_env_entities(interface, devstring);
+	if (ret)
+		goto done;
+
+	/*
+	 * We need to copy name pointed by *dfu_entity_name since this text
+	 * is the integral part of the FDT image.
+	 * Any implicit modification (i.e. done by strsep()) will corrupt
+	 * the FDT image and prevent other images to be stored.
+	 */
+	s = strdup(dfu_entity_name);
+	sb = s;
+	if (!s) {
+		ret = -ENOMEM;
+		goto done;
+	}
+
+	strsep(&s, "@");
+	debug("%s: image name: %s strlen: %zd\n", __func__, sb, strlen(sb));
+
+	alt_setting_num = dfu_get_alt(sb);
+	free(sb);
+	if (alt_setting_num < 0) {
+		pr_err("Alt setting [%d] to write not found!",
+		      alt_setting_num);
+		ret = -ENODEV;
+		goto done;
+	}
+
+	dfu = dfu_get_entity(alt_setting_num);
+	if (!dfu) {
+		pr_err("DFU entity for alt: %d not found!", alt_setting_num);
+		ret = -ENODEV;
+		goto done;
+	}
+
+	ret = dfu_write_from_mem_addr(dfu, (void *)(uintptr_t)addr, len);
+
+done:
+	dfu_free_entities();
+
+	return ret;
+}

source/bootloader/u-boot-2020.01/drivers/dfu/dfu_virt.c

@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
+/*
+ * Copyright (C) 2019, STMicroelectronics - All Rights Reserved
+ */
+#include <common.h>
+#include <dfu.h>
+#include <errno.h>
+#include <malloc.h>
+
+int __weak dfu_write_medium_virt(struct dfu_entity *dfu, u64 offset,
+				 void *buf, long *len)
+{
+	debug("%s: off=0x%llx, len=0x%x\n", __func__, offset, (u32)*len);
+
+	return 0;
+}
+
+int __weak dfu_get_medium_size_virt(struct dfu_entity *dfu, u64 *size)
+{
+	*size = 0;
+
+	return 0;
+}
+
+int __weak dfu_read_medium_virt(struct dfu_entity *dfu, u64 offset,
+				void *buf, long *len)
+{
+	debug("%s: off=0x%llx, len=0x%x\n", __func__, offset, (u32)*len);
+	*len = 0;
+
+	return 0;
+}
+
+int dfu_fill_entity_virt(struct dfu_entity *dfu, char *devstr, char *s)
+{
+	debug("%s: devstr = %s\n", __func__, devstr);
+
+	dfu->dev_type = DFU_DEV_VIRT;
+	dfu->layout = DFU_RAW_ADDR;
+	dfu->data.virt.dev_num = simple_strtoul(devstr, NULL, 10);
+
+	dfu->write_medium = dfu_write_medium_virt;
+	dfu->get_medium_size = dfu_get_medium_size_virt;
+	dfu->read_medium = dfu_read_medium_virt;
+
+	dfu->inited = 0;
+
+	return 0;
+}