From af1a266670d040d2f4083ff309d732d648afba2a Mon Sep 17 00:00:00 2001
From: Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com>
Date: Tue, 10 Oct 2023 14:33:42 +0000
Subject: Add submodule dependency files
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
---
roms/u-boot/arch/arm/lib/interrupts.c | 206 ++++++++++++++++++++++++++++++++++
1 file changed, 206 insertions(+)
create mode 100644 roms/u-boot/arch/arm/lib/interrupts.c
(limited to 'roms/u-boot/arch/arm/lib/interrupts.c')
diff --git a/roms/u-boot/arch/arm/lib/interrupts.c b/roms/u-boot/arch/arm/lib/interrupts.c
new file mode 100644
index 000000000..6dc27d1d5
--- /dev/null
+++ b/roms/u-boot/arch/arm/lib/interrupts.c
@@ -0,0 +1,206 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2003
+ * Texas Instruments <www.ti.com>
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Alex Zuepke <azu@sysgo.de>
+ *
+ * (C) Copyright 2002-2004
+ * Gary Jennejohn, DENX Software Engineering, <garyj@denx.de>
+ *
+ * (C) Copyright 2004
+ * Philippe Robin, ARM Ltd. <philippe.robin@arm.com>
+ */
+
+#include <common.h>
+#include <cpu_func.h>
+#include <efi_loader.h>
+#include <irq_func.h>
+#include <asm/global_data.h>
+#include <asm/proc-armv/ptrace.h>
+#include <asm/ptrace.h>
+#include <asm/u-boot-arm.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int interrupt_init(void)
+{
+ /*
+ * setup up stacks if necessary
+ */
+ IRQ_STACK_START_IN = gd->irq_sp + 8;
+
+ enable_interrupts();
+
+ return 0;
+}
+
+void enable_interrupts(void)
+{
+ return;
+}
+int disable_interrupts(void)
+{
+ return 0;
+}
+
+void bad_mode (void)
+{
+ panic ("Resetting CPU ...\n");
+ reset_cpu();
+}
+
+static void show_efi_loaded_images(struct pt_regs *regs)
+{
+ efi_print_image_infos((void *)instruction_pointer(regs));
+}
+
+static void dump_instr(struct pt_regs *regs)
+{
+ 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 __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", "HYP_32", "UND_32",
+ "UK12_32", "UK13_32", "UK14_32", "SYS_32",
+ };
+
+ flags = condition_codes (regs);
+
+ 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",
+ regs->ARM_r7, regs->ARM_r6, regs->ARM_r5, regs->ARM_r4);
+ printf ("r3 : %08lx r2 : %08lx r1 : %08lx r0 : %08lx\n",
+ regs->ARM_r3, regs->ARM_r2, regs->ARM_r1, regs->ARM_r0);
+ printf ("Flags: %c%c%c%c",
+ flags & CC_N_BIT ? 'N' : 'n',
+ flags & CC_Z_BIT ? 'Z' : 'z',
+ flags & CC_C_BIT ? 'C' : 'c', flags & CC_V_BIT ? 'V' : 'v');
+ printf (" IRQs %s FIQs %s Mode %s%s\n",
+ interrupts_enabled (regs) ? "on" : "off",
+ 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 ();
+}
+
+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 ();
+}
--
cgit