+// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2003
* Texas Instruments <www.ti.com>
*
* (C) Copyright 2004
* Philippe Robin, ARM Ltd. <philippe.robin@arm.com>
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
*/
#include <common.h>
+#include <cpu_func.h>
+#include <efi_loader.h>
+#include <irq_func.h>
#include <asm/proc-armv/ptrace.h>
+#include <asm/ptrace.h>
+#include <asm/u-boot-arm.h>
DECLARE_GLOBAL_DATA_PTR;
-#ifdef CONFIG_USE_IRQ
-int interrupt_init (void)
+int interrupt_init(void)
{
/*
* setup up stacks if necessary
*/
- IRQ_STACK_START = gd->irq_sp - 4;
IRQ_STACK_START_IN = gd->irq_sp + 8;
- FIQ_STACK_START = IRQ_STACK_START - CONFIG_STACKSIZE_IRQ;
- return arch_interrupt_init();
-}
+ enable_interrupts();
-/* enable IRQ interrupts */
-void enable_interrupts (void)
-{
- unsigned long temp;
- __asm__ __volatile__("mrs %0, cpsr\n"
- "bic %0, %0, #0x80\n"
- "msr cpsr_c, %0"
- : "=r" (temp)
- :
- : "memory");
+ return 0;
}
-
-/*
- * disable IRQ/FIQ interrupts
- * returns true if interrupts had been enabled before we disabled them
- */
-int disable_interrupts (void)
+void enable_interrupts(void)
{
- unsigned long old,temp;
- __asm__ __volatile__("mrs %0, cpsr\n"
- "orr %1, %0, #0xc0\n"
- "msr cpsr_c, %1"
- : "=r" (old), "=r" (temp)
- :
- : "memory");
- return (old & 0x80) == 0;
+ return;
}
-#else
-int interrupt_init (void)
+int disable_interrupts(void)
{
- /*
- * setup up stacks if necessary
- */
- IRQ_STACK_START_IN = gd->irq_sp + 8;
-
return 0;
}
-void enable_interrupts (void)
+void bad_mode (void)
{
- return;
+ panic ("Resetting CPU ...\n");
+ reset_cpu(0);
}
-int disable_interrupts (void)
+
+static void show_efi_loaded_images(struct pt_regs *regs)
{
- return 0;
+ efi_print_image_infos((void *)instruction_pointer(regs));
}
-#endif
-
-void bad_mode (void)
+static void dump_instr(struct pt_regs *regs)
{
- panic ("Resetting CPU ...\n");
- reset_cpu (0);
+ unsigned long addr = instruction_pointer(regs);
+ const int thumb = thumb_mode(regs);
+ const int width = thumb ? 4 : 8;
+ int i;
+
+ if (thumb)
+ addr &= ~1L;
+ else
+ addr &= ~3L;
+ printf("Code: ");
+ for (i = -4; i < 1 + !!thumb; i++) {
+ unsigned int val;
+
+ if (thumb)
+ val = ((u16 *)addr)[i];
+ else
+ val = ((u32 *)addr)[i];
+ printf(i == 0 ? "(%0*x) " : "%0*x ", width, val);
+ }
+ printf("\n");
}
void show_regs (struct pt_regs *regs)
{
- unsigned long flags;
- const char *processor_modes[] = {
+ unsigned long __maybe_unused flags;
+ const char __maybe_unused *processor_modes[] = {
"USER_26", "FIQ_26", "IRQ_26", "SVC_26",
"UK4_26", "UK5_26", "UK6_26", "UK7_26",
"UK8_26", "UK9_26", "UK10_26", "UK11_26",
"UK12_26", "UK13_26", "UK14_26", "UK15_26",
"USER_32", "FIQ_32", "IRQ_32", "SVC_32",
"UK4_32", "UK5_32", "UK6_32", "ABT_32",
- "UK8_32", "UK9_32", "UK10_32", "UND_32",
+ "UK8_32", "UK9_32", "HYP_32", "UND_32",
"UK12_32", "UK13_32", "UK14_32", "SYS_32",
};
flags = condition_codes (regs);
- printf ("pc : [<%08lx>] lr : [<%08lx>]\n"
- "sp : %08lx ip : %08lx fp : %08lx\n",
- instruction_pointer (regs),
- regs->ARM_lr, regs->ARM_sp, regs->ARM_ip, regs->ARM_fp);
+ printf("pc : [<%08lx>] lr : [<%08lx>]\n",
+ instruction_pointer(regs), regs->ARM_lr);
+ if (gd->flags & GD_FLG_RELOC) {
+ printf("reloc pc : [<%08lx>] lr : [<%08lx>]\n",
+ instruction_pointer(regs) - gd->reloc_off,
+ regs->ARM_lr - gd->reloc_off);
+ }
+ printf("sp : %08lx ip : %08lx fp : %08lx\n",
+ regs->ARM_sp, regs->ARM_ip, regs->ARM_fp);
printf ("r10: %08lx r9 : %08lx r8 : %08lx\n",
regs->ARM_r10, regs->ARM_r9, regs->ARM_r8);
printf ("r7 : %08lx r6 : %08lx r5 : %08lx r4 : %08lx\n",
fast_interrupts_enabled (regs) ? "on" : "off",
processor_modes[processor_mode (regs)],
thumb_mode (regs) ? " (T)" : "");
+ dump_instr(regs);
+}
+
+/* fixup PC to point to the instruction leading to the exception */
+static inline void fixup_pc(struct pt_regs *regs, int offset)
+{
+ uint32_t pc = instruction_pointer(regs) + offset;
+ regs->ARM_pc = pc | (regs->ARM_pc & PCMASK);
}
void do_undefined_instruction (struct pt_regs *pt_regs)
{
+ efi_restore_gd();
printf ("undefined instruction\n");
+ fixup_pc(pt_regs, -4);
show_regs (pt_regs);
+ show_efi_loaded_images(pt_regs);
bad_mode ();
}
void do_software_interrupt (struct pt_regs *pt_regs)
{
+ efi_restore_gd();
printf ("software interrupt\n");
+ fixup_pc(pt_regs, -4);
show_regs (pt_regs);
+ show_efi_loaded_images(pt_regs);
bad_mode ();
}
void do_prefetch_abort (struct pt_regs *pt_regs)
{
+ efi_restore_gd();
printf ("prefetch abort\n");
+ fixup_pc(pt_regs, -8);
show_regs (pt_regs);
+ show_efi_loaded_images(pt_regs);
bad_mode ();
}
void do_data_abort (struct pt_regs *pt_regs)
{
+ efi_restore_gd();
printf ("data abort\n");
+ fixup_pc(pt_regs, -8);
show_regs (pt_regs);
+ show_efi_loaded_images(pt_regs);
bad_mode ();
}
void do_not_used (struct pt_regs *pt_regs)
{
+ efi_restore_gd();
printf ("not used\n");
+ fixup_pc(pt_regs, -8);
show_regs (pt_regs);
+ show_efi_loaded_images(pt_regs);
bad_mode ();
}
void do_fiq (struct pt_regs *pt_regs)
{
+ efi_restore_gd();
printf ("fast interrupt request\n");
+ fixup_pc(pt_regs, -8);
show_regs (pt_regs);
+ show_efi_loaded_images(pt_regs);
bad_mode ();
}
-#ifndef CONFIG_USE_IRQ
void do_irq (struct pt_regs *pt_regs)
{
+ efi_restore_gd();
printf ("interrupt request\n");
+ fixup_pc(pt_regs, -8);
show_regs (pt_regs);
+ show_efi_loaded_images(pt_regs);
bad_mode ();
}
-#endif
projects / oweals / u-boot.git / blobdiff