[PATCH 4/4] efi: Print GDB command for loading symbols if variable exists

[Glenn Washburn]

If the variable "enable_earlyinit_gdbinfo" exists, print the GDB command
needed to properly load symbols in an attached GDB session. This variable
must come from the environment block stored in the GRUB_ENV EFI variable,
which allows this to get printed as early as possible.

Signed-off-by: Glenn Washburn <development@efficientek.com>
---
 grub-core/kern/efi/init.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/grub-core/kern/efi/init.c b/grub-core/kern/efi/init.c
index 18329b1eacd7..3dce0308cce8 100644
--- a/grub-core/kern/efi/init.c
+++ b/grub-core/kern/efi/init.c
@@ -142,6 +142,8 @@ grub_efi_env_init (void)
 void
 grub_efi_init (void)
 {
+  const char *value;
+
   grub_modbase = grub_efi_section_addr ("mods");
   /* First of all, initialize the console so that GRUB can display
      messages.  */
@@ -155,6 +157,10 @@ grub_efi_init (void)
   /* Populate environment with variables from EFI envblk, if it exists.  */
   grub_efi_env_init ();
 
+  value = grub_env_get ("enable_earlyinit_gdbinfo");
+  if (value != NULL && !grub_strcmp (value, "1"))
+    grub_efi_print_gdb_info ();
+
   /*
    * Lockdown the GRUB and register the shim_lock verifier
    * if the UEFI Secure Boot is enabled.
-- 
2.34.1