mirror of
https://github.com/AsahiLinux/u-boot
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f1d2b313c9
!! This breaks support for all arm boards !! To compile in old style, you must define CONFIG_SYS_ARM_WITHOUT_RELOC or you can compile with "CONFIG_SYS_ARM_WITHOUT_RELOC=1 ./MAKEALL board" !! This define will be removed soon, so convert your board to use relocation support Portions of this work were supported by funding from the CE Linux Forum. Signed-off-by: Heiko Schocher <hs@denx.de> Fix boot from NAND for non-ARM systems Signed-off-by: Wolfgang Denk <wd@denx.de>
204 lines
4.8 KiB
C
204 lines
4.8 KiB
C
/*
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* (C) Copyright 2003
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* Texas Instruments <www.ti.com>
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*
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* (C) Copyright 2002
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* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
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* Marius Groeger <mgroeger@sysgo.de>
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*
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* (C) Copyright 2002
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* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
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* Alex Zuepke <azu@sysgo.de>
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*
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* (C) Copyright 2002-2004
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* Gary Jennejohn, DENX Software Engineering, <garyj@denx.de>
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*
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* (C) Copyright 2004
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* Philippe Robin, ARM Ltd. <philippe.robin@arm.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <asm/proc-armv/ptrace.h>
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DECLARE_GLOBAL_DATA_PTR;
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#ifdef CONFIG_USE_IRQ
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int interrupt_init (void)
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{
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/*
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* setup up stacks if necessary
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*/
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#if !defined(CONFIG_SYS_ARM_WITHOUT_RELOC)
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IRQ_STACK_START = gd->irq_sp - 4;
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IRQ_STACK_START_IN = gd->irq_sp + 8;
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#else
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IRQ_STACK_START = _armboot_start - CONFIG_SYS_MALLOC_LEN - CONFIG_SYS_GBL_DATA_SIZE - 4;
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#endif
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FIQ_STACK_START = IRQ_STACK_START - CONFIG_STACKSIZE_IRQ;
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return arch_interrupt_init();
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}
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/* enable IRQ interrupts */
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void enable_interrupts (void)
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{
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unsigned long temp;
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__asm__ __volatile__("mrs %0, cpsr\n"
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"bic %0, %0, #0x80\n"
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"msr cpsr_c, %0"
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: "=r" (temp)
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:
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: "memory");
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}
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/*
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* disable IRQ/FIQ interrupts
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* returns true if interrupts had been enabled before we disabled them
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*/
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int disable_interrupts (void)
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{
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unsigned long old,temp;
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__asm__ __volatile__("mrs %0, cpsr\n"
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"orr %1, %0, #0xc0\n"
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"msr cpsr_c, %1"
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: "=r" (old), "=r" (temp)
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:
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: "memory");
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return (old & 0x80) == 0;
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}
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#else
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#if !defined(CONFIG_SYS_ARM_WITHOUT_RELOC)
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int interrupt_init (void)
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{
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/*
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* setup up stacks if necessary
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*/
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IRQ_STACK_START_IN = gd->irq_sp + 8;
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return 0;
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}
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#endif
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void enable_interrupts (void)
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{
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return;
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}
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int disable_interrupts (void)
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{
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return 0;
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}
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#endif
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void bad_mode (void)
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{
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panic ("Resetting CPU ...\n");
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reset_cpu (0);
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}
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void show_regs (struct pt_regs *regs)
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{
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unsigned long flags;
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const char *processor_modes[] = {
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"USER_26", "FIQ_26", "IRQ_26", "SVC_26",
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"UK4_26", "UK5_26", "UK6_26", "UK7_26",
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"UK8_26", "UK9_26", "UK10_26", "UK11_26",
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"UK12_26", "UK13_26", "UK14_26", "UK15_26",
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"USER_32", "FIQ_32", "IRQ_32", "SVC_32",
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"UK4_32", "UK5_32", "UK6_32", "ABT_32",
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"UK8_32", "UK9_32", "UK10_32", "UND_32",
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"UK12_32", "UK13_32", "UK14_32", "SYS_32",
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};
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flags = condition_codes (regs);
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printf ("pc : [<%08lx>] lr : [<%08lx>]\n"
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"sp : %08lx ip : %08lx fp : %08lx\n",
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instruction_pointer (regs),
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regs->ARM_lr, regs->ARM_sp, regs->ARM_ip, regs->ARM_fp);
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printf ("r10: %08lx r9 : %08lx r8 : %08lx\n",
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regs->ARM_r10, regs->ARM_r9, regs->ARM_r8);
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printf ("r7 : %08lx r6 : %08lx r5 : %08lx r4 : %08lx\n",
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regs->ARM_r7, regs->ARM_r6, regs->ARM_r5, regs->ARM_r4);
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printf ("r3 : %08lx r2 : %08lx r1 : %08lx r0 : %08lx\n",
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regs->ARM_r3, regs->ARM_r2, regs->ARM_r1, regs->ARM_r0);
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printf ("Flags: %c%c%c%c",
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flags & CC_N_BIT ? 'N' : 'n',
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flags & CC_Z_BIT ? 'Z' : 'z',
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flags & CC_C_BIT ? 'C' : 'c', flags & CC_V_BIT ? 'V' : 'v');
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printf (" IRQs %s FIQs %s Mode %s%s\n",
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interrupts_enabled (regs) ? "on" : "off",
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fast_interrupts_enabled (regs) ? "on" : "off",
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processor_modes[processor_mode (regs)],
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thumb_mode (regs) ? " (T)" : "");
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}
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void do_undefined_instruction (struct pt_regs *pt_regs)
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{
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printf ("undefined instruction\n");
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show_regs (pt_regs);
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bad_mode ();
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}
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void do_software_interrupt (struct pt_regs *pt_regs)
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{
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printf ("software interrupt\n");
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show_regs (pt_regs);
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bad_mode ();
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}
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void do_prefetch_abort (struct pt_regs *pt_regs)
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{
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printf ("prefetch abort\n");
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show_regs (pt_regs);
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bad_mode ();
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}
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void do_data_abort (struct pt_regs *pt_regs)
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{
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printf ("data abort\n");
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show_regs (pt_regs);
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bad_mode ();
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}
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void do_not_used (struct pt_regs *pt_regs)
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{
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printf ("not used\n");
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show_regs (pt_regs);
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bad_mode ();
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}
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void do_fiq (struct pt_regs *pt_regs)
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{
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printf ("fast interrupt request\n");
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show_regs (pt_regs);
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bad_mode ();
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}
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#ifndef CONFIG_USE_IRQ
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void do_irq (struct pt_regs *pt_regs)
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{
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printf ("interrupt request\n");
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show_regs (pt_regs);
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bad_mode ();
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}
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#endif
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