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arm: print information about loaded UEFI images

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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>
This commit is contained in:
Heinrich Schuchardt 2018-04-05 11:56:22 +02:00 committed by Alexander Graf
parent c9a63f44b5
commit 99b8db7291
1 changed files with 13 additions and 0 deletions
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13
arch/arm/lib/interrupts.c
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@ -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 ();
}