| /* |
| * (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> |
| * |
| * 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 <asm/proc-armv/ptrace.h> |
| |
| #ifdef CONFIG_USE_IRQ |
| DECLARE_GLOBAL_DATA_PTR; |
| |
| int interrupt_init (void) |
| { |
| /* |
| * setup up stacks if necessary |
| */ |
| IRQ_STACK_START = _armboot_start - CONFIG_SYS_MALLOC_LEN - CONFIG_SYS_GBL_DATA_SIZE - 4; |
| FIQ_STACK_START = IRQ_STACK_START - CONFIG_STACKSIZE_IRQ; |
| |
| return arch_interrupt_init(); |
| } |
| |
| /* 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"); |
| } |
| |
| |
| /* |
| * disable IRQ/FIQ interrupts |
| * returns true if interrupts had been enabled before we disabled them |
| */ |
| int disable_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; |
| } |
| #else |
| void enable_interrupts (void) |
| { |
| return; |
| } |
| int disable_interrupts (void) |
| { |
| return 0; |
| } |
| #endif |
| |
| |
| void bad_mode (void) |
| { |
| panic ("Resetting CPU ...\n"); |
| //reset_cpu (0); |
| } |
| |
| void show_regs (struct pt_regs *regs) |
| { |
| unsigned long flags; |
| const char *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", |
| "UK12_32", "UK13_32", "UK14_32", "SYS_32", |
| }; |
| |
| flags = condition_codes (regs); |
| #if 1 // CHANDU |
| 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 ("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)" : ""); |
| #endif |
| } |
| |
| void do_undefined_instruction (struct pt_regs *pt_regs) |
| { |
| printf ("undefined instruction\n"); |
| show_regs (pt_regs); |
| bad_mode (); |
| } |
| |
| void do_software_interrupt (struct pt_regs *pt_regs) |
| { |
| printf ("software interrupt\n"); |
| show_regs (pt_regs); |
| bad_mode (); |
| } |
| |
| void do_prefetch_abort (struct pt_regs *pt_regs) |
| { |
| printf ("prefetch abort\n"); |
| show_regs (pt_regs); |
| bad_mode (); |
| } |
| |
| void do_data_abort (struct pt_regs *pt_regs) |
| { |
| printf ("data abort\n"); |
| show_regs (pt_regs); |
| bad_mode (); |
| } |
| |
| void do_not_used (struct pt_regs *pt_regs) |
| { |
| printf ("not used\n"); |
| show_regs (pt_regs); |
| bad_mode (); |
| } |
| |
| void do_fiq (struct pt_regs *pt_regs) |
| { |
| printf ("fast interrupt request\n"); |
| show_regs (pt_regs); |
| bad_mode (); |
| } |
| |
| #ifndef CONFIG_USE_IRQ |
| void do_irq (struct pt_regs *pt_regs) |
| { |
| printf ("interrupt request\n"); |
| show_regs (pt_regs); |
| bad_mode (); |
| } |
| #endif |