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authorSebastian Siewior <bigeasy@linutronix.de>2014-05-05 15:08:10 -0500
committerLukasz Majewski <l.majewski@samsung.com>2014-05-08 10:38:30 +0200
commit3aab70afc531d1eea0e6fcfcf49001163ad13137 (patch)
treeae7eb8dee7e502adfc6435220abdf95f6c1f249f /README
parent9ace3fc81427f6a4036718c2daff9d6f8ee7b69a (diff)
downloadtalos-obmc-uboot-3aab70afc531d1eea0e6fcfcf49001163ad13137.tar.gz
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usb/gadget: add the fastboot gadget
This patch contains an implementation of the fastboot protocol on the device side and documentation. This is based on USB download gadget infrastructure. The fastboot function implements the getvar, reboot, download and reboot commands. What is missing is the flash handling i.e. writting the image to media. v3 (Rob Herring): This is based on http://patchwork.ozlabs.org/patch/126798/ with the following changes: - Rebase to current mainline and updates for current gadget API - Use SPDX identifiers for licenses - Traced the history and added missing copyright to cmd_fastboot.c - Use load_addr/load_size for transfer buffer - Allow vendor strings to be optional - Set vendor/product ID from config defines - Allow Ctrl-C to exit fastboot mode v4: - Major re-write to use the USB download gadget. Consolidated function code to a single file. - Moved globals into single struct. - Use puts and putc as appropriate. - Added CONFIG_USB_FASTBOOT_BUF_ADDR and CONFIG_USB_FASTBOOT_BUF_SIZE to set the fastboot transfer buffer. v5: - Add CONFIG option documentation to README - Rebase using new downloader registration Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Rob Herring <robh@kernel.org>
Diffstat (limited to 'README')
-rw-r--r--README22
1 files changed, 22 insertions, 0 deletions
diff --git a/README b/README
index b973344184..8114f79e66 100644
--- a/README
+++ b/README
@@ -1558,6 +1558,28 @@ The following options need to be configured:
entering dfuMANIFEST state. Host waits this timeout, before
sending again an USB request to the device.
+- USB Device Android Fastboot support:
+ CONFIG_CMD_FASTBOOT
+ This enables the command "fastboot" which enables the Android
+ fastboot mode for the platform's USB device. Fastboot is a USB
+ protocol for downloading images, flashing and device control
+ used on Android devices.
+ See doc/README.android-fastboot for more information.
+
+ CONFIG_ANDROID_BOOT_IMAGE
+ This enables support for booting images which use the Android
+ image format header.
+
+ CONFIG_USB_FASTBOOT_BUF_ADDR
+ The fastboot protocol requires a large memory buffer for
+ downloads. Define this to the starting RAM address to use for
+ downloaded images.
+
+ CONFIG_USB_FASTBOOT_BUF_SIZE
+ The fastboot protocol requires a large memory buffer for
+ downloads. This buffer should be as large as possible for a
+ platform. Define this to the size available RAM for fastboot.
+
- Journaling Flash filesystem support:
CONFIG_JFFS2_NAND, CONFIG_JFFS2_NAND_OFF, CONFIG_JFFS2_NAND_SIZE,
CONFIG_JFFS2_NAND_DEV
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