[U-Boot] [PATCH v2 6/6] config: enable DFU over USB on Raspberry Pi4 boards

[Marek Szyprowski]

Hi Matthias,

On 08.11.2019 17:57, Matthias Brugger wrote:
> First of all thanks for the patch and sorry for the late response.
>
> On 24/09/2019 15:11, Marek Szyprowski wrote:
>> Enable support for DFU over USB. This requires to enable USB gadget,
>> DWC2 UDC OTG driver and DFU command. DFU entities are defined for the
>> following firmware objects: u-boot.bin, uboot.env, config.txt, cmdline.txt
>> and zImage/Image.gz.
>>
>> Signed-off-by: Marek Szyprowski <m.szyprowski at samsung.com>
>> Reviewed-by: Lukasz Majewski <lukma at denx.de>
>> ---
>>   configs/rpi_4_32b_defconfig | 11 +++++++++++
>>   configs/rpi_4_defconfig     | 11 +++++++++++
>>   include/configs/rpi.h       | 17 +++++++++++++++++
>>   3 files changed, 39 insertions(+)
>>
>> diff --git a/configs/rpi_4_32b_defconfig b/configs/rpi_4_32b_defconfig
>> index a31a617a5f..0a375b9736 100644
>> --- a/configs/rpi_4_32b_defconfig
>> +++ b/configs/rpi_4_32b_defconfig
>> @@ -12,6 +12,7 @@ CONFIG_MISC_INIT_R=y
>>   # CONFIG_DISPLAY_CPUINFO is not set
>>   # CONFIG_DISPLAY_BOARDINFO is not set
>>   CONFIG_SYS_PROMPT="U-Boot> "
>> +CONFIG_CMD_DFU=y
>>   # CONFIG_CMD_FLASH is not set
>>   CONFIG_CMD_GPIO=y
>>   CONFIG_CMD_MMC=y
>> @@ -19,6 +20,7 @@ CONFIG_CMD_FS_UUID=y
>>   CONFIG_ENV_FAT_INTERFACE="mmc"
>>   CONFIG_ENV_FAT_DEVICE_AND_PART="0:1"
>>   CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y
>> +CONFIG_DFU_MMC=y
>>   CONFIG_DM_KEYBOARD=y
>>   CONFIG_DM_MMC=y
>>   CONFIG_MMC_SDHCI=y
>> @@ -26,6 +28,15 @@ CONFIG_MMC_SDHCI_BCM2835=y
>>   CONFIG_PINCTRL=y
>>   # CONFIG_PINCTRL_GENERIC is not set
>>   # CONFIG_REQUIRE_SERIAL_CONSOLE is not set
>> +CONFIG_USB=y
>> +CONFIG_DM_USB=y
>> +CONFIG_DM_USB_GADGET=y
>> +CONFIG_USB_GADGET=y
>> +CONFIG_USB_GADGET_MANUFACTURER="FSL"
>> +CONFIG_USB_GADGET_VENDOR_NUM=0x0525
>> +CONFIG_USB_GADGET_PRODUCT_NUM=0xa4a5
>> +CONFIG_USB_GADGET_DWC2_OTG=y
>> +CONFIG_USB_GADGET_DOWNLOAD=y
>>   CONFIG_DM_VIDEO=y
>>   CONFIG_SYS_WHITE_ON_BLACK=y
>>   CONFIG_CONSOLE_SCROLL_LINES=10
>> diff --git a/configs/rpi_4_defconfig b/configs/rpi_4_defconfig
>> index da8c960a2a..5b9be9b9c0 100644
>> --- a/configs/rpi_4_defconfig
>> +++ b/configs/rpi_4_defconfig
>> @@ -12,6 +12,7 @@ CONFIG_MISC_INIT_R=y
>>   # CONFIG_DISPLAY_CPUINFO is not set
>>   # CONFIG_DISPLAY_BOARDINFO is not set
>>   CONFIG_SYS_PROMPT="U-Boot> "
>> +CONFIG_CMD_DFU=y
>>   # CONFIG_CMD_FLASH is not set
>>   CONFIG_CMD_GPIO=y
>>   CONFIG_CMD_MMC=y
>> @@ -19,6 +20,7 @@ CONFIG_CMD_FS_UUID=y
>>   CONFIG_ENV_FAT_INTERFACE="mmc"
>>   CONFIG_ENV_FAT_DEVICE_AND_PART="0:1"
>>   CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y
>> +CONFIG_DFU_MMC=y
>>   CONFIG_DM_KEYBOARD=y
>>   CONFIG_DM_MMC=y
>>   CONFIG_MMC_SDHCI=y
>> @@ -26,6 +28,15 @@ CONFIG_MMC_SDHCI_BCM2835=y
>>   CONFIG_PINCTRL=y
>>   # CONFIG_PINCTRL_GENERIC is not set
>>   # CONFIG_REQUIRE_SERIAL_CONSOLE is not set
>> +CONFIG_USB=y
>> +CONFIG_DM_USB=y
>> +CONFIG_DM_USB_GADGET=y
>> +CONFIG_USB_GADGET=y
>> +CONFIG_USB_GADGET_MANUFACTURER="FSL"
>> +CONFIG_USB_GADGET_VENDOR_NUM=0x0525
>> +CONFIG_USB_GADGET_PRODUCT_NUM=0xa4a5
>> +CONFIG_USB_GADGET_DWC2_OTG=y
>> +CONFIG_USB_GADGET_DOWNLOAD=y
>>   CONFIG_DM_VIDEO=y
>>   CONFIG_SYS_WHITE_ON_BLACK=y
>>   CONFIG_CONSOLE_SCROLL_LINES=10
>> diff --git a/include/configs/rpi.h b/include/configs/rpi.h
>> index 77d2d5458a..bfe76eb392 100644
>> --- a/include/configs/rpi.h
>> +++ b/include/configs/rpi.h
>> @@ -70,6 +70,22 @@
>>   #define CONFIG_TFTP_TSIZE
>>   #endif
>>   
>> +/* DFU over USB/UDC */
>> +#ifdef CONFIG_CMD_DFU
>> +#define CONFIG_SYS_DFU_DATA_BUF_SIZE	SZ_1M
>> +#define CONFIG_SYS_DFU_MAX_FILE_SIZE	SZ_2M
>> +
>> +#ifdef CONFIG_ARM64
>> +#define KERNEL_FILENAME		"Image.gz"
>> +#else
>> +#define KERNEL_FILENAME		"zImage"
>> +#endif
>> +#define ENV_DFU_SETTINGS \
>> +	"dfu_alt_info=u-boot.bin fat 0 1;uboot.env fat 0 1;" \
>> +		      "config.txt fat 0 1;cmdline.txt fat 0 1;" \
>> +		      KERNEL_FILENAME " fat 0 1\0"
>> +#endif
>> +
> I'm hesitant to take this file list as I think it highly depends on what you
> want to do with the board. For example at SUSE we use a ubootconfig.txt which
> get's added to config.txt. We might want to update grub, our kernel is on a
> different partition etc.
>
> What do you think?

Well, the above list is just a proposal. IMHO distro maintainers should 
adjust it for their needs. I can add a comment about that if you want.

> Other then that the patches look good, and I understand that they should go
> through my tree, also I don't know much about the FAT implementation.

Merging everything via a single tree will be the easiest way to handle 
the runtime dependencies.

Best regards
-- 
Marek Szyprowski, PhD
Samsung R&D Institute Poland