Merge branch '2020-05-25-misc-fixes'

- A few minor Kconfig migrations / corrections
- DFU doc fixes/improvements
- Bugfix for ARMv8, env userspace building, more NULL checks in generic
  PHY code

MAINTAINERS

@@ -600,13 +600,16 @@ F:	cmd/usb_*.c
 F:	common/dfu.c
 F:	common/update.c
 F:	common/usb_storage.c
+F:	doc/api/dfu.rst
 F:	drivers/dfu/
 F:	drivers/usb/gadget/
+F:	include/dfu.h
 
 DRIVER MODEL
 M:	Simon Glass <sjg@chromium.org>
 S:	Maintained
 T:	git https://gitlab.denx.de/u-boot/custodians/u-boot-dm.git
+F:	doc/driver-model/
 F:	drivers/core/
 F:	include/dm/
 F:	test/dm/

README

@@ -2729,10 +2729,6 @@ Configuration Settings:
 	regular expression. This allows multiple variables to define the same
 	flags without explicitly listing them for each variable.
 
-- CONFIG_ENV_ACCESS_IGNORE_FORCE
-	If defined, don't allow the -f switch to env set override variable
-	access flags.
-
 The following definitions that deal with the placement and management
 of environment data (variable area); in general, we support the
 following configurations:

arch/Kconfig

@@ -86,6 +86,7 @@ config RISCV
 config SANDBOX
 	bool "Sandbox"
 	select BOARD_LATE_INIT
+	select BZIP2
 	select DM
 	select DM_GPIO
 	select DM_I2C
@@ -94,6 +95,7 @@ config SANDBOX
 	select DM_SERIAL
 	select DM_SPI
 	select DM_SPI_FLASH
+	select GZIP_COMPRESSED
 	select HAVE_BLOCK_DEVICE
 	select LZO
 	select OF_BOARD_SETUP

arch/arm/cpu/armv8/cache_v8.c

@@ -557,7 +557,7 @@ static u64 set_one_region(u64 start, u64 size, u64 attrs, bool flag, int level)
 void mmu_set_region_dcache_behaviour(phys_addr_t start, size_t size,
 				     enum dcache_option option)
 {
-	u64 attrs = PMD_ATTRINDX(option);
+	u64 attrs = PMD_ATTRINDX(option >> 2);
 	u64 real_start = start;
 	u64 real_size = size;
 

cmd/Kconfig

@@ -810,11 +810,13 @@ config CMD_UNLZ4
 config CMD_UNZIP
 	bool "unzip"
 	default y if CMD_BOOTI
+	select GZIP
 	help
 	  Uncompress a zip-compressed memory region.
 
 config CMD_ZIP
 	bool "zip"
+	select GZIP_COMPRESSED
 	help
 	  Compress a memory region with zlib deflate method.
 

cmd/zip.c

@@ -7,6 +7,7 @@
 #include <common.h>
 #include <command.h>
 #include <env.h>
+#include <gzip.h>
 
 static int do_zip(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
 {

configs/bcm7260_defconfig

@@ -13,6 +13,7 @@ CONFIG_USE_PREBOOT=y
 CONFIG_PREBOOT="fdt addr ${fdtcontroladdr};fdt move ${fdtcontroladdr} ${fdtsaveaddr};fdt addr ${fdtsaveaddr};"
 CONFIG_HUSH_PARSER=y
 CONFIG_SYS_PROMPT="U-Boot>"
+CONFIG_CMD_MMC=y
 CONFIG_EFI_PARTITION=y
 CONFIG_OF_PRIOR_STAGE=y
 CONFIG_ENV_IS_IN_MMC=y

configs/bcm7445_defconfig

@@ -14,6 +14,7 @@ CONFIG_USE_PREBOOT=y
 CONFIG_PREBOOT="fdt addr ${fdtcontroladdr};fdt move ${fdtcontroladdr} ${fdtsaveaddr};fdt addr ${fdtsaveaddr};"
 CONFIG_HUSH_PARSER=y
 CONFIG_SYS_PROMPT="U-Boot>"
+CONFIG_CMD_MMC=y
 CONFIG_CMD_SF_TEST=y
 CONFIG_CMD_SPI=y
 CONFIG_OF_PRIOR_STAGE=y

configs/gurnard_defconfig

@@ -16,6 +16,7 @@ CONFIG_HUSH_PARSER=y
 # CONFIG_CMD_FLASH is not set
 CONFIG_CMD_GPIO=y
 # CONFIG_CMD_LOADS is not set
+CONFIG_CMD_MMC=y
 CONFIG_CMD_NAND=y
 CONFIG_CMD_PART=y
 CONFIG_CMD_USB=y

configs/imx8mq_evk_defconfig

@@ -19,6 +19,7 @@ CONFIG_HUSH_PARSER=y
 # CONFIG_BOOTM_NETBSD is not set
 CONFIG_CMD_GPIO=y
 CONFIG_CMD_I2C=y
+CONFIG_CMD_MMC=y
 CONFIG_CMD_CACHE=y
 CONFIG_CMD_REGULATOR=y
 CONFIG_CMD_EXT2=y

configs/imx8mq_phanbell_defconfig

@@ -21,6 +21,7 @@ CONFIG_HUSH_PARSER=y
 # CONFIG_BOOTM_NETBSD is not set
 CONFIG_CMD_GPIO=y
 CONFIG_CMD_I2C=y
+CONFIG_CMD_MMC=y
 CONFIG_CMD_CACHE=y
 CONFIG_CMD_REGULATOR=y
 CONFIG_CMD_EXT2=y

configs/ls1021aiot_qspi_defconfig

@@ -12,6 +12,7 @@ CONFIG_MISC_INIT_R=y
 CONFIG_BOARD_EARLY_INIT_F=y
 CONFIG_CMD_BOOTZ=y
 CONFIG_CMD_GPT=y
+CONFIG_CMD_MMC=y
 CONFIG_CMD_DHCP=y
 CONFIG_CMD_PING=y
 CONFIG_CMD_EXT2=y

configs/ls1021aiot_sdcard_defconfig

@@ -17,6 +17,7 @@ CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR=y
 CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR=0xe8
 CONFIG_CMD_BOOTZ=y
 CONFIG_CMD_GPT=y
+CONFIG_CMD_MMC=y
 CONFIG_CMD_DHCP=y
 CONFIG_CMD_PING=y
 CONFIG_CMD_EXT2=y

configs/pico-imx8mq_defconfig

@@ -19,6 +19,7 @@ CONFIG_HUSH_PARSER=y
 # CONFIG_BOOTM_NETBSD is not set
 CONFIG_CMD_GPIO=y
 CONFIG_CMD_I2C=y
+CONFIG_CMD_MMC=y
 CONFIG_CMD_CACHE=y
 CONFIG_CMD_REGULATOR=y
 CONFIG_CMD_EXT2=y

configs/s32v234evb_defconfig

@@ -13,6 +13,7 @@ CONFIG_CMD_BOOTZ=y
 CONFIG_CMD_MEMTEST=y
 CONFIG_SYS_MEMTEST_START=0xc0000000
 CONFIG_SYS_MEMTEST_END=0xc7c00000
+CONFIG_CMD_MMC=y
 CONFIG_ENV_IS_IN_MMC=y
 CONFIG_SYS_RELOC_GD_ENV_ADDR=y
 CONFIG_DM=y

doc/README.dfu

@@ -48,12 +48,12 @@ Configuration Options:
   CONFIG_CMD_DFU
 
 Environment variables:
-  the dfu command use 3 environments variables:
-  "dfu_alt_info" : the DFU setting for the USB download gadget with a comma
+  the dfu command uses 3 environments variables:
+  "dfu_alt_info" : the DFU setting for the USB download gadget with a semicolon
                    separated string of information on each alternate:
                    dfu_alt_info="<alt1>;<alt2>;....;<altN>"
 
-                   when only several device are used, the format is:
+                   when several devices are used, the format is:
                    - <interface> <dev>'='alternate list (';' separated)
                    - each interface is separated by '&'
                 dfu_alt_info=\
@@ -63,7 +63,7 @@ Environment variables:
                    "<interfaceI> <devI>=<altY+1>;....;<altZ>&"
 
   "dfu_bufsiz" : size of the DFU buffer, when absent, use
-                 CONFIG_SYS_DFU_DATA_BUF_SIZE (8MiB by default)
+                 CONFIG_SYS_DFU_DATA_BUF_SIZE (8 MiB by default)
 
   "dfu_hash_algo" : name of the hash algorithm to use
 
@@ -87,12 +87,21 @@ Commands:
   "mmc" (for eMMC and SD card)
     cmd: dfu 0 mmc <dev>
     each element in "dfu_alt_info" =
-      <name> raw <offset> <size>   raw access to mmc device
-      <name> part <dev> <part_id>  raw acces to partition
-      <name> fat <dev> <part_id>   file in FAT partition
-      <name> ext4 <dev> <part_id>  file in EXT4 partition
+      <name> raw <offset> <size> [mmcpart <num>]   raw access to mmc device
+      <name> part <dev> <part_id> [mmcpart <num>]  raw access to partition
+      <name> fat <dev> <part_id> [mmcpart <num>]   file in FAT partition
+      <name> ext4 <dev> <part_id> [mmcpart <num>]  file in EXT4 partition
 
-      with <partid> is the GPT or DOS partition index
+      with <partid> being the GPT or DOS partition index,
+      with <num> being the eMMC hardware partition number.
+
+    A value of environment variable dfu_alt_info for eMMC could be:
+
+      "u-boot raw 0x3e 0x800 mmcpart 1;bl2 raw 0x1e 0x1d mmcpart 1"
+
+    A value of environment variable dfu_alt_info for SD card could be:
+
+      "u-boot raw 0x80 0x800;uImage ext4 0 2"
 
   "nand" (raw slc nand device)
     cmd: dfu 0 nand <dev>

doc/api/dfu.rst

@@ -0,0 +1,7 @@
+.. SPDX-License-Identifier: GPL-2.0+
+
+Device firmware update
+======================
+
+.. kernel-doc:: include/dfu.h
+   :internal:

doc/api/index.rst

@@ -6,6 +6,7 @@ U-Boot API documentation
 .. toctree::
    :maxdepth: 2
 
+   dfu
    efi
    linker_lists
    serial

drivers/phy/phy-uclass.c

@@ -118,7 +118,7 @@ int generic_phy_init(struct phy *phy)
 {
 	struct phy_ops const *ops;
 
-	if (!phy)
+	if (!generic_phy_valid(phy))
 		return 0;
 	ops = phy_dev_ops(phy->dev);
 
@@ -129,7 +129,7 @@ int generic_phy_reset(struct phy *phy)
 {
 	struct phy_ops const *ops;
 
-	if (!phy)
+	if (!generic_phy_valid(phy))
 		return 0;
 	ops = phy_dev_ops(phy->dev);
 
@@ -140,7 +140,7 @@ int generic_phy_exit(struct phy *phy)
 {
 	struct phy_ops const *ops;
 
-	if (!phy)
+	if (!generic_phy_valid(phy))
 		return 0;
 	ops = phy_dev_ops(phy->dev);
 
@@ -151,7 +151,7 @@ int generic_phy_power_on(struct phy *phy)
 {
 	struct phy_ops const *ops;
 
-	if (!phy)
+	if (!generic_phy_valid(phy))
 		return 0;
 	ops = phy_dev_ops(phy->dev);
 
@@ -162,7 +162,7 @@ int generic_phy_power_off(struct phy *phy)
 {
 	struct phy_ops const *ops;
 
-	if (!phy)
+	if (!generic_phy_valid(phy))
 		return 0;
 	ops = phy_dev_ops(phy->dev);
 

env/Kconfig

@@ -604,6 +604,13 @@ config DELAY_ENVIRONMENT
 	  later by U-Boot code. With CONFIG_OF_CONTROL this is instead
 	  controlled by the value of /config/load-environment.
 
+config ENV_ACCESS_IGNORE_FORCE
+	bool "Block forced environment operations"
+	default n
+	help
+	  If defined, don't allow the -f switch to env set override variable
+	  access flags.
+
 if SPL_ENV_SUPPORT
 config SPL_ENV_IS_NOWHERE
 	bool "SPL Environment is not stored"

include/configs/bcmstb.h

@@ -130,7 +130,6 @@ extern phys_addr_t prior_stage_fdt_address;
 #define CONFIG_CMD_ASKENV
 #define CONFIG_CMD_CACHE
 #define CONFIG_CMD_EXT2
-#define CONFIG_CMD_MMC
 
 /*
  * Flash configuration.

include/configs/imx8mq_evk.h

@@ -202,8 +202,6 @@
 
 #define CONFIG_IMX_BOOTAUX
 
-#define CONFIG_CMD_MMC
-
 #define CONFIG_SYS_FSL_USDHC_NUM	2
 #define CONFIG_SYS_FSL_ESDHC_ADDR       0
 

include/configs/imx8mq_phanbell.h

@@ -193,8 +193,6 @@
 
 #define CONFIG_IMX_BOOTAUX
 
-#define CONFIG_CMD_MMC
-
 #define CONFIG_SYS_FSL_USDHC_NUM	2
 #define CONFIG_SYS_FSL_ESDHC_ADDR       0
 

include/configs/ls1021aiot.h

@@ -120,7 +120,6 @@
 /*
  * MMC
  */
-#define CONFIG_CMD_MMC
 
 /* SATA */
 #define CONFIG_SCSI_AHCI_PLAT

include/configs/pico-imx8mq.h

@@ -174,8 +174,6 @@
 
 #define CONFIG_IMX_BOOTAUX
 
-#define CONFIG_CMD_MMC
-
 #define CONFIG_SYS_FSL_USDHC_NUM	2
 #define CONFIG_SYS_FSL_ESDHC_ADDR	0
 

include/configs/s32v234evb.h

@@ -68,7 +68,6 @@
 #define CONFIG_SYS_FSL_ESDHC_ADDR	USDHC_BASE_ADDR
 #define CONFIG_SYS_FSL_ESDHC_NUM	1
 
-#define CONFIG_CMD_MMC
 /* #define CONFIG_CMD_EXT2 EXT2 Support */
 
 #if 0

include/configs/sandbox.h

@@ -114,9 +114,6 @@
 	BOOTENV \
 	MEM_LAYOUT_ENV_SETTINGS
 
-#define CONFIG_GZIP_COMPRESSED
-#define CONFIG_BZIP2
-
 #ifndef CONFIG_SPL_BUILD
 #define CONFIG_SYS_IDE_MAXBUS		1
 #define CONFIG_SYS_ATA_IDE0_OFFSET	0

include/configs/snapper9g45.h

@@ -101,7 +101,6 @@
 
 /* Command line configuration */
 #define CONFIG_CMD_MII
-#define CONFIG_CMD_MMC
 #define CONFIG_CMD_CACHE
 
 #endif /* __CONFIG_H */

include/dfu.h

@@ -159,20 +159,139 @@ struct dfu_entity {
 };
 
 #ifdef CONFIG_SET_DFU_ALT_INFO
+/**
+ * set_dfu_alt_info() - set dfu_alt_info environment variable
+ *
+ * If CONFIG_SET_DFU_ALT_INFO=y, this board specific function is called to set
+ * environment variable dfu_alt_info.
+ *
+ * @interface:	dfu interface, e.g. "mmc" or "nand"
+ * @devstr:	device number as string
+ */
 void set_dfu_alt_info(char *interface, char *devstr);
 #endif
+
+/**
+ * dfu_alt_init() - initialize buffer for dfu entities
+ *
+ * @num:	number of entities
+ * @dfu:	on return allocated buffer
+ * Return:	0 on success
+ */
 int dfu_alt_init(int num, struct dfu_entity **dfu);
+
+/**
+ * dfu_alt_add() - add alternate to dfu entity buffer
+ *
+ * @dfu:	dfu entity
+ * @interface:	dfu interface, e.g. "mmc" or "nand"
+ * @devstr:	device number as string
+ * @s:		string description of alternate
+ * Return:	0 on success
+ */
 int dfu_alt_add(struct dfu_entity *dfu, char *interface, char *devstr, char *s);
+
+/**
+ * dfu_config_entities() - initialize dfu entitities from envirionment
+ *
+ * Initialize the list of dfu entities from environment variable dfu_alt_info.
+ * The list must be freed by calling dfu_free_entities(). This function bypasses
+ * set_dfu_alt_info(). So typically you should use dfu_init_env_entities()
+ * instead.
+ *
+ * See function :c:func:`dfu_free_entities`
+ * See function :c:func:`dfu_init_env_entities`
+ *
+ * @s:		string with alternates
+ * @interface:	interface, e.g. "mmc" or "nand"
+ * @devstr:	device number as string
+ * Return:	0 on success, a negative error code otherwise
+ */
 int dfu_config_entities(char *s, char *interface, char *devstr);
+
+/**
+ * dfu_free_entities() - free the list of dfu entities
+ *
+ * Free the internal list of dfu entities.
+ *
+ * See function :c:func:`dfu_init_env_entities`
+ */
 void dfu_free_entities(void);
+
+/**
+ * dfu_show_entities() - print DFU alt settings list
+ */
 void dfu_show_entities(void);
+
+/**
+ * dfu_get_alt_number() - get number of alternates
+ *
+ * Return: number of alternates in the dfu entities list
+ */
 int dfu_get_alt_number(void);
-const char *dfu_get_dev_type(enum dfu_device_type t);
-const char *dfu_get_layout(enum dfu_layout l);
+
+/**
+ * dfu_get_dev_type() - get string representation for dfu device type
+ *
+ * @type:	device type
+ * Return:	string representation for device type
+ */
+const char *dfu_get_dev_type(enum dfu_device_type type);
+
+/**
+ * dfu_get_layout() - get string describing layout
+ *
+ * Internally layouts are represented by enum dfu_device_type values. This
+ * function translates an enum value to a human readable string, e.g. DFU_FS_FAT
+ * is translated to "FAT".
+ *
+ * @layout:	layout
+ * Result:	string representation for the layout
+ */
+const char *dfu_get_layout(enum dfu_layout layout);
+
+/**
+ * dfu_get_entity() - get dfu entity for an alternate id
+ *
+ * @alt:	alternate id
+ * Return:	dfu entity
+ */
 struct dfu_entity *dfu_get_entity(int alt);
+
 char *dfu_extract_token(char** e, int *n);
+
+/**
+ * dfu_get_alt() - get alternate id for filename
+ *
+ * Environment variable dfu_alt_info defines the write destinations (alternates)
+ * for different filenames. This function get the index of the alternate for
+ * a filename. If an absolute filename is provided (starting with '/'), the
+ * directory path is ignored.
+ *
+ * @name:	filename
+ * Return:	id of the alternate or negative error number (-ENODEV)
+ */
 int dfu_get_alt(char *name);
+
+/**
+ * dfu_init_env_entities() - initialize dfu entitities from envirionment
+ *
+ * Initialize the list of dfu entities from environment variable dfu_alt_info.
+ * The list must be freed by calling dfu_free_entities().
+ * @interface and @devstr are used to select the relevant set of alternates
+ * from environment variable dfu_alt_info.
+ *
+ * If environment variable dfu_alt_info specifies the interface and the device,
+ * use NULL for @interface and @devstr.
+ *
+ * See function :c:func:`dfu_free_entities`
+ *
+ * @interface:	interface, e.g. "mmc" or "nand"
+ * @devstr:	device number as string
+ * Return:	0 on success, a negative error code otherwise
+ */
 int dfu_init_env_entities(char *interface, char *devstr);
+
 unsigned char *dfu_get_buf(struct dfu_entity *dfu);
 unsigned char *dfu_free_buf(void);
 unsigned long dfu_get_buf_size(void);
@@ -183,29 +302,79 @@ unsigned long dfu_get_timeout(void);
 void dfu_set_timeout(unsigned long);
 #endif
 
+/**
+ * dfu_read() - read from dfu entity
+ *
+ * The block sequence number @blk_seq_num is a 16 bit counter that must be
+ * incremented with each call for the same dfu entity @de.
+ *
+ * @de:			dfu entity
+ * @buf:		buffer
+ * @size:		size of buffer
+ * @blk_seq_num:	block sequence number
+ * Return:		0 for success, -1 for error
+ */
 int dfu_read(struct dfu_entity *de, void *buf, int size, int blk_seq_num);
+
+/**
+ * dfu_write() - write to dfu entity
+ *
+ * Write the contents of a buffer @buf to the dfu entity @de. After writing
+ * the last block call dfu_flush(). If a file is already loaded completely
+ * into memory it is preferable to use dfu_write_from_mem_addr() which takes
+ * care of blockwise transfer and flushing.
+ *
+ * The block sequence number @blk_seq_num is a 16 bit counter that must be
+ * incremented with each call for the same dfu entity @de.
+ *
+ * See function :c:func:`dfu_flush`
+ * See function :c:func:`dfu_write_from_mem_addr`
+ *
+ * @de:			dfu entity
+ * @buf:		buffer
+ * @size:		size of buffer
+ * @blk_seq_num:	block sequence number
+ * Return:		0 for success, -1 for error
+ */
 int dfu_write(struct dfu_entity *de, void *buf, int size, int blk_seq_num);
+
+/**
+ * dfu_flush() - flush to dfu entity
+ *
+ * This function has to be called after writing the last block to the dfu
+ * entity @de.
+ *
+ * The block sequence number @blk_seq_num is a 16 bit counter that must be
+ * incremented with each call for the same dfu entity @de.
+ *
+ * See function :c:func:`dfu_write`
+ *
+ * @de:			dfu entity
+ * @buf:		ignored
+ * @size:		ignored
+ * @blk_seq_num:	block sequence number of last write - ignored
+ * Return:		0 for success, -1 for error
+ */
 int dfu_flush(struct dfu_entity *de, void *buf, int size, int blk_seq_num);
 
 /**
- * dfu_initiated_callback - weak callback called on DFU transaction start
+ * dfu_initiated_callback() - weak callback called on DFU transaction start
  *
  * It is a callback function called by DFU stack when a DFU transaction is
  * initiated. This function allows to manage some board specific behavior on
  * DFU targets.
  *
- * @param dfu - pointer to the dfu_entity, which should be initialized
- *
+ * @dfu:	pointer to the dfu_entity, which should be initialized
  */
 void dfu_initiated_callback(struct dfu_entity *dfu);
+
 /**
- * dfu_flush_callback - weak callback called at the end of the DFU write
+ * dfu_flush_callback() - weak callback called at the end of the DFU write
  *
  * It is a callback function called by DFU stack after DFU manifestation.
  * This function allows to manage some board specific behavior on DFU targets
  *
- * @param dfu - pointer to the dfu_entity, which should be flushed
- *
+ * @dfu:	pointer to the dfu_entity, which should be flushed
  */
 void dfu_flush_callback(struct dfu_entity *dfu);
 
@@ -217,10 +386,11 @@ void dfu_transaction_cleanup(struct dfu_entity *dfu);
  *		     It should be NULL when not used.
  */
 extern struct dfu_entity *dfu_defer_flush;
+
 /**
- * dfu_get_defer_flush - get current value of dfu_defer_flush pointer
+ * dfu_get_defer_flush() - get current value of dfu_defer_flush pointer
  *
- * @return - value of the dfu_defer_flush pointer
+ * Return:	value of the dfu_defer_flush pointer
  */
 static inline struct dfu_entity *dfu_get_defer_flush(void)
 {
@@ -228,9 +398,9 @@ static inline struct dfu_entity *dfu_get_defer_flush(void)
 }
 
 /**
- * dfu_set_defer_flush - set the dfu_defer_flush pointer
+ * dfu_set_defer_flush() - set the dfu_defer_flush pointer
  *
- * @param dfu - pointer to the dfu_entity, which should be written
+ * @dfu:	pointer to the dfu_entity, which should be written
  */
 static inline void dfu_set_defer_flush(struct dfu_entity *dfu)
 {
@@ -238,16 +408,16 @@ static inline void dfu_set_defer_flush(struct dfu_entity *dfu)
 }
 
 /**
- * dfu_write_from_mem_addr - write data from memory to DFU managed medium
+ * dfu_write_from_mem_addr() - write data from memory to DFU managed medium
  *
  * This function adds support for writing data starting from fixed memory
  * address (like $loadaddr) to dfu managed medium (e.g. NAND, MMC, file system)
  *
- * @param dfu - dfu entity to which we want to store data
- * @param buf - fixed memory addres from where data starts
- * @param size - number of bytes to write
+ * @dfu:	dfu entity to which we want to store data
+ * @buf:	fixed memory address from where data starts
+ * @size:	number of bytes to write
  *
- * @return - 0 on success, other value on failure
+ * Return:	0 on success, other value on failure
  */
 int dfu_write_from_mem_addr(struct dfu_entity *dfu, void *buf, int size);
 
@@ -324,17 +494,17 @@ static inline int dfu_fill_entity_virt(struct dfu_entity *dfu, char *devstr,
 #endif
 
 /**
- * dfu_tftp_write - Write TFTP data to DFU medium
+ * dfu_tftp_write() - write TFTP data to DFU medium
  *
  * This function is storing data received via TFTP on DFU supported medium.
  *
- * @param dfu_entity_name - name of DFU entity to write
- * @param addr - address of data buffer to write
- * @param len - number of bytes
- * @param interface - destination DFU medium (e.g. "mmc")
- * @param devstring - instance number of destination DFU medium (e.g. "1")
+ * @dfu_entity_name:	name of DFU entity to write
+ * @addr:		address of data buffer to write
+ * @len:		number of bytes
+ * @interface:		destination DFU medium (e.g. "mmc")
+ * @devstring:		instance number of destination DFU medium (e.g. "1")
  *
- * @return 0 on success, otherwise error code
+ * Return:		0 on success, otherwise error code
  */
 #if CONFIG_IS_ENABLED(DFU_TFTP)
 int dfu_tftp_write(char *dfu_entity_name, unsigned int addr, unsigned int len,

lib/Kconfig

@@ -424,6 +424,10 @@ config GZIP
 	help
 	  This enables support for GZIP compression algorithm.
 
+config GZIP_COMPRESSED
+	bool
+	select ZLIB
+
 config BZIP2
 	bool "Enable bzip2 decompression support"
 	help

scripts/config_whitelist.txt

@@ -415,7 +415,6 @@ CONFIG_ENABLE_36BIT_PHYS
 CONFIG_ENABLE_MMU
 CONFIG_ENABLE_MUST_CHECK
 CONFIG_ENABLE_WARN_DEPRECATED
-CONFIG_ENV_ACCESS_IGNORE_FORCE
 CONFIG_ENV_ADDR_FLEX
 CONFIG_ENV_CALLBACK_LIST_DEFAULT
 CONFIG_ENV_CALLBACK_LIST_STATIC
@@ -644,8 +643,6 @@ CONFIG_GPIO_LED_STUBS
 CONFIG_GREEN_LED
 CONFIG_GURNARD_FPGA
 CONFIG_GURNARD_SPLASH
-CONFIG_GZIP_COMPRESSED
-CONFIG_GZIP_COMPRESS_DEF_SZ
 CONFIG_G_DNL_THOR_PRODUCT_NUM
 CONFIG_G_DNL_THOR_VENDOR_NUM
 CONFIG_G_DNL_UMS_PRODUCT_NUM

tools/env/fw_env.h

@@ -4,7 +4,6 @@
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  */
 
-#include <env.h>
 #include <stdint.h>
 
 /*