Allow custom bootloader msg offset in block misc
Globally define BOARD_RECOVERY_BLDRMSG_OFFSET with a decimal integer
to offset the read/write location in misc where the bootloader message
should appear. Example:
BOARD_GLOBAL_CFLAGS := -DBOARD_RECOVERY_BLDRMSG_OFFSET=2048
Edify commands get_stage and set_stage need to be aware of the
custom bootloader msg offset because they write the stage directly
to the BCB.
Change-Id: Ifdb5ffe3e893a651be59ae63e3a0ebadd828c9f2
diff --git a/bootloader_message/bootloader_message.cpp b/bootloader_message/bootloader_message.cpp
index 4d1ce5b..449f40e 100644
--- a/bootloader_message/bootloader_message.cpp
+++ b/bootloader_message/bootloader_message.cpp
@@ -159,7 +159,10 @@
*err = "no misc device set";
return false;
}
- int fd = (open(misc_blk_device.c_str(), O_WRONLY | O_SYNC));
+ int open_flags = O_WRONLY | O_SYNC;
+ if (offset > 0)
+ open_flags = O_RDWR | O_APPEND | O_SYNC;
+ int fd = (open(misc_blk_device.c_str(), open_flags));
if (fd == -1) {
*err = "failed to open " + misc_blk_device + ": ";
*err += strerror(errno);