diff options
| -rw-r--r-- | arch/arm64/kernel/head.S | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/arm64/kernel/head.S b/arch/arm64/kernel/head.S index 29a734e..427f6d3 100644 --- a/arch/arm64/kernel/head.S +++ b/arch/arm64/kernel/head.S @@ -208,6 +208,16 @@ efi_header_end: __INIT + /* + * The following callee saved general purpose registers are used on the + * primary lowlevel boot path: + * + * Register Scope Purpose + * x21 stext() .. start_kernel() FDT pointer passed at boot in x0 + * x23 stext() .. start_kernel() physical misalignment/KASLR offset + * x28 __create_page_tables() callee preserved temp register + * x19/x20 __primary_switch() callee preserved temp registers + */ ENTRY(stext) bl preserve_boot_args bl el2_setup // Drop to EL1, w0=cpu_boot_mode |