Add kcmdline bootloader message
Define a new struct in the misc partition for telling the bootloader to
set kcmdline flags for enabling experimental dogfood features in the
kernel.
Test: Verified that a custom bootloader is able to read the data
Bug: 278052745
Change-Id: I5f13a9bdff940517cb7b880815dfb8f396fc3844
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
diff --git a/bootloader_message/bootloader_message.cpp b/bootloader_message/bootloader_message.cpp
index 1ea56cd..e9dd0d4 100644
--- a/bootloader_message/bootloader_message.cpp
+++ b/bootloader_message/bootloader_message.cpp
@@ -314,6 +314,16 @@
offsetof(misc_system_space_layout, memtag_message), err);
}
+bool ReadMiscKcmdlineMessage(misc_kcmdline_message* message, std::string* err) {
+ return ReadMiscPartitionSystemSpace(message, sizeof(*message),
+ offsetof(misc_system_space_layout, kcmdline_message), err);
+}
+
+bool WriteMiscKcmdlineMessage(const misc_kcmdline_message& message, std::string* err) {
+ return WriteMiscPartitionSystemSpace(&message, sizeof(message),
+ offsetof(misc_system_space_layout, kcmdline_message), err);
+}
+
extern "C" bool write_reboot_bootloader(void) {
std::string err;
return write_reboot_bootloader(&err);