From e74670adfe6425b94b8615b74b8aadc5425fb246 Mon Sep 17 00:00:00 2001 From: Eugeniu Rosca Date: Fri, 23 Oct 2020 11:52:22 +0300 Subject: cmd: bcb: Expose 'bcb_write_reboot_reason' to external callers Fastboot is evolving and beginning with commit [1], the upstream implementation expects bootloaders to offer support for: - reboot-recovery - reboot-fastboot The most natural way to achieve the above is through a set of pre-defined "reboot reason" strings, written into / read from the BCB "command" field, e.g.: - bootonce-bootloader [2] - boot-fastboot [3] - boot-recovery [4] Expose the first 'bcb' API meant to be called by e.g. fastboot stack, to allow updating the BCB reboot reason via the BCB 'command' field. [1] https://android.googlesource.com/platform/system/core/+/dea91b4b5354af2 ("Add fastbootd.") [2] https://android.googlesource.com/platform/bootable/recovery/+/cba7fa88d8b9 ("Add 'reboot bootloader' to bootloader_message.") [3] https://android.googlesource.com/platform/bootable/recovery/+/eee4e260f9f6 ("recovery: Add "boot-fastboot" command to BCB.") [4] https://android.googlesource.com/platform/system/core/+/5e98b633a748695f ("init: Write the reason in BCB on "reboot recovery"") Signed-off-by: Eugeniu Rosca Signed-off-by: Roman Kovalivskyi [lukma - added missing #include to avoid build breaks] --- include/bcb.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) create mode 100644 include/bcb.h (limited to 'include/bcb.h') diff --git a/include/bcb.h b/include/bcb.h new file mode 100644 index 0000000000..5bb8d8346c --- /dev/null +++ b/include/bcb.h @@ -0,0 +1,21 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2020 Eugeniu Rosca + * + * Android Bootloader Control Block Header + */ + +#ifndef __BCB_H__ +#define __BCB_H__ + +#if CONFIG_IS_ENABLED(CMD_BCB) +int bcb_write_reboot_reason(int devnum, char *partp, char *reasonp); +#else +#include +static inline int bcb_write_reboot_reason(int devnum, char *partp, char *reasonp) +{ + return -EOPNOTSUPP; +} +#endif + +#endif /* __BCB_H__ */ -- cgit v1.2.1