arm: print information about loaded UEFI images

If an exception occurs in a UEFI loaded image we need the start address of
the image to determine the relocation offset.

This patch adds the necessary lines after the registers in the crash dump.
A possible output would be:

UEFI image [0xbffe6000:0xbffe631f] pc=0x138 '/\snp.efi'

With the offset 0x138 we can now find the relevant instruction in the
disassembled 'snp.efi' binary.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>

diff --git a/arch/arm/lib/interrupts.c b/arch/arm/lib/interrupts.c
index 80869adb6107a71dc7a7ba1a74471be1444cd456..cda4d484605444f6e3019ce42b6fee1541ef4b38 100644 (file)
--- a/arch/arm/lib/interrupts.c
+++ b/arch/arm/lib/interrupts.c
@@ -20,6 +20,7 @@
  */
 
 #include <common.h>
+#include <efi_loader.h>
 #include <asm/proc-armv/ptrace.h>
 #include <asm/u-boot-arm.h>
 #include <efi_loader.h>
@@ -51,6 +52,11 @@ void bad_mode (void)
        reset_cpu (0);
 }
 
+static void show_efi_loaded_images(struct pt_regs *regs)
+{
+       efi_print_image_infos((void *)instruction_pointer(regs));
+}
+
 void show_regs (struct pt_regs *regs)
 {
        unsigned long __maybe_unused flags;
@@ -106,6 +112,7 @@ void do_undefined_instruction (struct pt_regs *pt_regs)
        printf ("undefined instruction\n");
        fixup_pc(pt_regs, -4);
        show_regs (pt_regs);
+       show_efi_loaded_images(pt_regs);
        bad_mode ();
 }
 
@@ -115,6 +122,7 @@ void do_software_interrupt (struct pt_regs *pt_regs)
        printf ("software interrupt\n");
        fixup_pc(pt_regs, -4);
        show_regs (pt_regs);
+       show_efi_loaded_images(pt_regs);
        bad_mode ();
 }
 
@@ -124,6 +132,7 @@ void do_prefetch_abort (struct pt_regs *pt_regs)
        printf ("prefetch abort\n");
        fixup_pc(pt_regs, -8);
        show_regs (pt_regs);
+       show_efi_loaded_images(pt_regs);
        bad_mode ();
 }
 
@@ -133,6 +142,7 @@ void do_data_abort (struct pt_regs *pt_regs)
        printf ("data abort\n");
        fixup_pc(pt_regs, -8);
        show_regs (pt_regs);
+       show_efi_loaded_images(pt_regs);
        bad_mode ();
 }
 
@@ -142,6 +152,7 @@ void do_not_used (struct pt_regs *pt_regs)
        printf ("not used\n");
        fixup_pc(pt_regs, -8);
        show_regs (pt_regs);
+       show_efi_loaded_images(pt_regs);
        bad_mode ();
 }
 
@@ -151,6 +162,7 @@ void do_fiq (struct pt_regs *pt_regs)
        printf ("fast interrupt request\n");
        fixup_pc(pt_regs, -8);
        show_regs (pt_regs);
+       show_efi_loaded_images(pt_regs);
        bad_mode ();
 }
 
@@ -160,5 +172,6 @@ void do_irq (struct pt_regs *pt_regs)
        printf ("interrupt request\n");
        fixup_pc(pt_regs, -8);
        show_regs (pt_regs);
+       show_efi_loaded_images(pt_regs);
        bad_mode ();
 }