Add fastboot UDP support

This series merges the fastboot UDP support from AOSP into mainline U-Boot.

Changes in UDP behaviour from the AOSP code, so it follows the existing USB behaviour:

- 'boot' now follows the USB code and does 'bootm CONFIG_FASTBOOT_BUF_ADDR'. I've added 'fastboot_bootcmd' which if set overrides the boot command and allows the existing UDP behaviour to be preserved.
- 'continue' in UDP now exits the fastboot server rather than executing 'run bootcmd'
- 'reboot-bootloader' no longer writes 'reboot-bootloader' to CONFIG_FASTBOOT_BUF_ADDR as its marker for the subsequent boot. The
code which is in AOSP common/android_bootloader.c expects this marker, but we have prior art in the USB code using the weak function
fastboot_set_reboot_flag
- 'getvar' in the UDP path now supports fetching 'fastboot.' prefixed variables (inherited from the USB path), these override the defaults

I've pushed both USB and UDP into a single consolidated protocol layer now I've tested it on a BeagleBone Green.

Green Travis build:
https://travis-ci.org/akiernan/u-boot/builds/383077278

Changes in v7:
- set FASTBOOT_CMD_OEM_FORMAT for all existing users of FASTBOOT_FLASH_MMC_DEV that also have CMD_GPT

Changes in v6:
- accomodate master change and switch dependency on imx6dl_mamoj from FASTBOOT to USB_FUNCTION_FASTBOOT
- delete redundant FASTBOOT_FLASH_NAND_DEV symbol
- add docbook comments
- add docbook comments
- rename fastboot_download_data() to fastboot_data_download(), rename fastboot_get_bytes_remaining() to fastboot_data_remaining()
- split fastboot_data_complete() out from fastboot_data_download() so we can call it at the end of the transfer phase for USB
- merged from RFC USB fastboot series
- when entering the DATA phase ensure we actually install the correct handler
- on completion of DATA call new fastboot_data_complete()
- previous changes:
- remove redundant version.h
- use new fastboot_get_bytes_remaining() function
- new

Changes in v5:
- don't depend on UDP_FUNCTION_FASTBOOT until it exists
- squash in subsequent patch which updates defconfigs so we don't leave users of CONFIG_FASTBOOT without it enabled
- fix build in drivers/fastboot when we have CONFIG_FASTBOOT without flash or erase and we've not yet added fb_common.c to the build
- fix docbook formatting
- new
- new
- rename CONFIG_FASTBOOT_FLASH_FILLBUF_SIZE to CONFIG_IMAGE_SPARSE_FILLBUF_SIZE and migrate it to Kconfig.
- make fastboot_bytes_received/expected static and add function fastboot_get_bytes_remaining()
- move fastboot_buf_addr/fastboot_buf_size/fastboot_progress_callback into fastboot-internal.h
- delete redundant fb_ prefixes from statics
- new

Changes in v4:
- add docbook comments
- leave strcmp_l1() in USB fastboot as we don't need it in UDP path
- add docbook comments
- new
- guard fb_getvar/fb_command with UDP_FUNCTION_FASTBOOT in Makefile
- add docbook comments
- remove parameter from fastboot_boot() since we always want fastboot_buf_addr (and if we're using fastboot_bootcmd then it's ignored)
- split oem format into new patch

Changes in v3:
- move imply ANDROID_BOOT_IMAGE, CMD_FASTBOOT to FASTBOOT from USB_FUNCTION_FASTBOOT
- add depend on USB_FUNCTION_FASTBOOT to FASTBOOT_USB_DEV
- leave images-sparse.c in common to acommodate 2f83f21
- refactor for changes in master
- Merge subsequent patch for formatting response strings into this one
- allow NULL to fastboot_okay() when there's no message to send
- guard FASTBOOT_GPT_NAME/FASTBOOT_MBR_NAME with EFI/DOS_PARTITION
- new
- new
- new
- new
- new
- new
- use FASTBOOT as our guard in Kconfig not a list of USB || UDP
- correct mis-translation from AOSP introduced when cleaning up for checkpatch - we should write when buffer is not NULL, rather than erasing, and erase when buffer is NULL
- use CMD_RET_USAGE from do_fastboot
- remove do_fastboot_udp from cmd/net.c and rewrite using net_loop()
- rename timed_send_info to fastboot_send_info, rename fastboot_send_info to fastboot_udp_send_info
- replace FASTBOOT_HEADER_SIZE with sizeof(struct fastboot_header)
- move start time into timed_send_info() rather than passing it in
- make calls to fastboot_udp_send_info a runtime dependency, not a compile time one
- set ${filesize} to size of downloaded image
- add progress meter from USB path during download
- add support for 'oem format' command from the USB path
- rename 'fastbootcmd' to 'fastboot_bootcmd' to make clear that this is the fastboot boot command
- make getvar implementation table driven
- add fastboot_buf_addr, fastboot_buf_size to override buffer address and size
- return correct filesystem type in getvar partition-type on MMC
- process "fastboot." prefixed env variables in getvar first so you can override the normal values (this also lets you set a fs type for NAND devices)
- squash subsequent patches which change this code into this one:
- If the fastboot flash/erase commands are disabled, remove that
support so we still build correctly.
- Add NAND support to fastboot UDP flash/erase commands
- If we don't have a partition name passed, report it as not found.
- Change the behaviour of the fastboot net code such that "reboot-bootloader" is no longer written to
CONFIG_FASTBOOT_BUF_ADDR for use as a marker on reboot (the AOSP code in common/android-bootloader.c uses this marker - this code could be reinstated there if that gets merged).
- Merge USB and UDP boot code. The USB implementation stays the
same, but UDP no longer passes an fdt. We introduce a new environment variable 'fastboot_bootcmd' which if set overrides the hardcoded boot command, setting this then allows the UDP implementation to remain the same. If after running 'fastboot_bootcmd' the board has not booted, control is returned to U-Boot and the fastboot process ends.
- Separate the fastboot protocol handling from the fastboot UDP
code in preparation for reusing it in the USB code.

Changes in v2:
- ensure fastboot syntax is backward compatible - 'fastboot 0' means 'fastboot usb 0'

Alex Kiernan (18):
fastboot: Move fastboot to drivers/fastboot
fastboot: Refactor fastboot_okay/fail to take response
fastboot: Extract fastboot_okay/fail to fb_common.c
fastboot: Correct dependencies in FASTBOOT_FLASH
fastboot: Add missing newlines
fastboot: Remove FIXME for CONFIG_FASTBOOT_...NAME
fastboot: Fix parameter types in _fb_nand_write
fastboot: Rename fb_set_reboot_flag to fastboot_set_reboot_flag
fastboot: Extract common definitions from USB fastboot
fastboot: Rename public fb_ functions to fastboot_
ti: fastboot: Move weak overrides to board files
fs: Add fs_get_type_name to return current filesystem name
fastboot: Migrate FASTBOOT_FLASH_NAND_TRIMFFS to Kconfig
mmc: Separate "mmc swrite" from fastboot
net: fastboot: Merge AOSP UDP fastboot
fastboot: Add support for 'oem format' command
usb: fastboot: Convert USB f_fastboot to shared fastboot
fastboot: Update fastboot documentation

 arch/arm/Kconfig                              |   2 -
 arch/arm/mach-omap2/boot-common.c             |  10 -
 arch/arm/mach-omap2/utils.c                   |   4 +-
 arch/arm/mach-rockchip/rk3128-board.c         |   4 +-
 arch/arm/mach-rockchip/rk322x-board.c         |   4 +-
 board/amazon/kc1/kc1.c                        |   2 +-
 board/lg/sniper/sniper.c                      |   2 +-
 board/ti/am57xx/board.c                       |  10 +
 board/ti/common/Kconfig                       |   1 -
 board/ti/dra7xx/evm.c                         |  10 +
 cmd/Kconfig                                   |  22 +-
 cmd/fastboot.c                                |  91 ++++-
 cmd/mmc.c                                     |  14 +-
 common/Makefile                               |  14 -
 configs/A13-OLinuXino_defconfig               |   1 +
 configs/A20-OLinuXino-Lime2-eMMC_defconfig    |   1 +
 configs/A20-OLinuXino-Lime2_defconfig         |   1 +
 configs/A20-Olimex-SOM204-EVB-eMMC_defconfig  |   1 +
 configs/A20-Olimex-SOM204-EVB_defconfig       |   1 +
 configs/Bananapi_m2m_defconfig                |   1 +
 configs/Cubietruck_defconfig                  |   1 +
 configs/Sinlinx_SinA33_defconfig              |   1 +
 configs/am335x_boneblack_defconfig            |   7 +-
 configs/am335x_boneblack_vboot_defconfig      |   2 +-
 configs/am335x_evm_defconfig                  |   2 +-
 configs/am335x_evm_nor_defconfig              |   2 +-
 configs/am335x_evm_norboot_defconfig          |   2 +-
 configs/am335x_evm_spiboot_defconfig          |   2 +-
 configs/am335x_evm_usbspl_defconfig           |   2 +-
 configs/am57xx_evm_defconfig                  |  13 +-
 configs/am57xx_hs_evm_defconfig               |  13 +-
 configs/bcm23550_w1d_defconfig                |   2 +-
 configs/bcm28155_ap_defconfig                 |   2 +-
 configs/birdland_bav335a_defconfig            |   2 +-
 configs/birdland_bav335b_defconfig            |   2 +-
 configs/cgtqmx6eval_defconfig                 |   2 +-
 configs/chromebit_mickey_defconfig            |   5 +-
 configs/chromebook_jerry_defconfig            |   5 +-
 configs/chromebook_minnie_defconfig           |   5 +-
 configs/dra7xx_evm_defconfig                  |  11 +-
 configs/dra7xx_hs_evm_defconfig               |  11 +-
 configs/evb-rk3036_defconfig                  |   5 +-
 configs/evb-rk3128_defconfig                  |   9 +-
 configs/evb-rk3229_defconfig                  |   5 +-
 configs/evb-rk3288_defconfig                  |   5 +-
 configs/evb-rk3328_defconfig                  |   7 +-
 configs/fennec-rk3288_defconfig               |   5 +-
 configs/firefly-rk3288_defconfig              |   5 +-
 configs/imx6dl_mamoj_defconfig                |   2 +-
 configs/kc1_defconfig                         |   2 +-
 configs/kylin-rk3036_defconfig                |   5 +-
 configs/miqi-rk3288_defconfig                 |   5 +-
 configs/mx6qsabrelite_defconfig               |   2 +-
 configs/mx6sabresd_defconfig                  |   2 +-
 configs/nitrogen6dl2g_defconfig               |   2 +-
 configs/nitrogen6dl_defconfig                 |   2 +-
 configs/nitrogen6q2g_defconfig                |   2 +-
 configs/nitrogen6q_defconfig                  |   2 +-
 configs/nitrogen6s1g_defconfig                |   2 +-
 configs/nitrogen6s_defconfig                  |   2 +-
 configs/omap3_beagle_defconfig                |   2 +-
 configs/omap3_evm_defconfig                   |   2 +-
 configs/omap3_logic_defconfig                 |   2 +-
 configs/parrot_r16_defconfig                  |   1 +
 configs/phycore-rk3288_defconfig              |   5 +-
 configs/popmetal-rk3288_defconfig             |   5 +-
 configs/rock2_defconfig                       |   5 +-
 configs/sniper_defconfig                      |   2 +-
 configs/stih410-b2260_defconfig               |  11 +-
 configs/tbs_a711_defconfig                    |   1 +
 configs/tinker-rk3288_defconfig               |   5 +-
 .../xilinx_zynqmp_zc1751_xm015_dc1_defconfig  |   7 +-
 .../xilinx_zynqmp_zc1751_xm016_dc2_defconfig  |   2 +-
 configs/xilinx_zynqmp_zcu102_rev1_0_defconfig |   7 +-
 configs/xilinx_zynqmp_zcu102_revA_defconfig   |   7 +-
 configs/xilinx_zynqmp_zcu102_revB_defconfig   |   7 +-
 configs/xilinx_zynqmp_zcu106_revA_defconfig   |   7 +-
 doc/README.android-fastboot                   | 240 +++++++-----
 drivers/Kconfig                               |   2 +
 drivers/Makefile                              |   1 +
 {cmd => drivers}/fastboot/Kconfig             |  63 ++--
 drivers/fastboot/Makefile                     |   7 +
 drivers/fastboot/fb_command.c                 | 335 +++++++++++++++++
 drivers/fastboot/fb_common.c                  | 169 +++++++++
 drivers/fastboot/fb_getvar.c                  | 230 ++++++++++++
 {common => drivers/fastboot}/fb_mmc.c         | 216 +++++++----
 {common => drivers/fastboot}/fb_nand.c        |  69 +++-
 drivers/usb/gadget/f_fastboot.c               | 347
++---------------- fs/fs.c                                       |
13 + include/fastboot-internal.h                   |  36 ++
 include/fastboot.h                            | 137 ++++++-
 include/fb_mmc.h                              |  35 +-
 include/fb_nand.h                             |  37 +-
 include/fs.h                                  |  10 +
 include/image-sparse.h                        |   4 +-
 include/net.h                                 |   2 +-
 include/net/fastboot.h                        |  21 ++
 lib/Kconfig                                   |  11 +
 lib/Makefile                                  |   1 +
 {common => lib}/image-sparse.c                |  38 +-
 net/Makefile                                  |   1 +
 net/fastboot.c                                | 317 ++++++++++++++++
 net/net.c                                     |   7 +
 scripts/config_whitelist.txt                  |   2 -
 104 files changed, 2094 insertions(+), 696 deletions(-)
 rename {cmd => drivers}/fastboot/Kconfig (78%)
 create mode 100644 drivers/fastboot/Makefile
 create mode 100644 drivers/fastboot/fb_command.c

 create mode 100644 drivers/fastboot/fb_common.c
 create mode 100644 drivers/fastboot/fb_getvar.c
 rename {common => drivers/fastboot}/fb_mmc.c (62%)
 rename {common => drivers/fastboot}/fb_nand.c (71%)
 create mode 100644 include/fastboot-internal.h
 create mode 100644 include/net/fastboot.h
 rename {common => lib}/image-sparse.c (88%)
 create mode 100644 net/fastboot.c