When debugging drivers it is useful to see what I/O accesses were done and in what order. Even if the individual accesses are of little interest it can be useful to verify that the access pattern is consistent each time an operation is performed. In this case a checksum can be used to characterise the operation of a driver. The checksum can be compared across different runs of the operation to verify that the driver is working properly. In particular, when performing major refactoring of the driver, where the access pattern should not change, the checksum provides assurance that the refactoring work has not broken the driver. Add an I/O tracing feature and associated commands to provide this facility. It works by sneaking into the io.h heder for an architecture and redirecting I/O accesses through its tracing mechanism. For now no commands are provided to examine the trace buffer. The format is fairly simple, so 'md' is a reasonable substitute. Note: The checksum feature is only useful for I/O regions where the contents do not change outside of software control. Where this is not suitable you can fall back to manually comparing the addresses. It might be useful to enhance tracing to only checksum the accesses and not the data read/written. Signed-off-by: Simon Glass <sjg@chromium.org>
This file has code in three different categories: - Command processing - OS-specific boot code - Locating images and setting up to boot Only the first category really belongs in a file called cmd_bootm.c. Leave the command processing code where it is. Split out the OS-specific boot code into bootm_os.c. Split out the other code into bootm.c Header files and extern declarations are tidied but otherwise no code changes are made, to make it easier to review. Signed-off-by: Simon Glass <sjg@chromium.org>
This code is only used by one board, so it seems a shame to clutter up the readline code with it. Move it into its own file. Signed-off-by: Simon Glass <sjg@chromium.org>
We now have a single entry point to the CLI, whether simple or hush. Put this in its own file. Signed-off-by: Simon Glass <sjg@chromium.org>
The autoboot code is complex and long. It deserves its own file with a simple interface from main.c. Signed-off-by: Simon Glass <sjg@chromium.org>
It doesn't make sense to have the simple parser and the readline code all in main. Split them out into separate files. Signed-off-by: Simon Glass <sjg@chromium.org>
Hush is a command-line interpreter, so rename it to make that clearer. Signed-off-by: Simon Glass <sjg@chromium.org>
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>
This patch adds support for the Android boot-image format. The header file is from the Android project and got slightly alterted so the struct + its defines are not generic but have something like a namespace. The header file is from bootloader/legacy/include/boot/bootimg.h. The header parsing has been written from scratch and I looked at bootloader/legacy/usbloader/usbloader.c for some details. The image contains the physical address (load address) of the kernel and ramdisk. This address is considered only for the kernel image. The "second image" defined in the image header is currently not supported. I haven't found anything that is creating this. v3 (Rob Herring): This is based on http://patchwork.ozlabs.org/patch/126797/ with the following changes: - Rebased to current mainline - Moved android image handling to separate functions in common/image-android.c - s/u8/char/ in header to fix string function warnings - Use SPDX identifiers for licenses - Cleaned-up file source information: android_image.h is from file include/boot/bootimg.h in repository: https://android.googlesource.com/platform/bootable/bootloader/legacy The git commit hash is 4205b865141ff2e255fe1d3bd16de18e217ef06a usbloader.c would be from the same commit, but it does not appear to have been used for any actual code. v4: - s/andriod/android/ - Use a separate flag ep_found to track if the entry point has been set rather than using a magic value. Cc: Wolfgang Denk <wd@denx.de> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Rob Herring <robh@kernel.org> Reviewed-by: Tom Rini <trini@ti.com> Reviewed-by: Lukasz Majewski <l.majewski@samsung.com>