mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-05 20:54:31 +00:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
168 lines
3.6 KiB
C
168 lines
3.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2013-2014 Synopsys, Inc. All rights reserved.
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*/
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#include <common.h>
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#include <asm/arcregs.h>
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#include <asm/ptrace.h>
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/* Bit values in STATUS32 */
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#define E1_MASK (1 << 1) /* Level 1 interrupts enable */
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#define E2_MASK (1 << 2) /* Level 2 interrupts enable */
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int interrupt_init(void)
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{
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return 0;
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}
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/*
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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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int status = read_aux_reg(ARC_AUX_STATUS32);
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int state = (status & (E1_MASK | E2_MASK)) ? 1 : 0;
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status &= ~(E1_MASK | E2_MASK);
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/* STATUS32 register is updated indirectly with "FLAG" instruction */
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__asm__("flag %0" : : "r" (status));
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return state;
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}
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void enable_interrupts(void)
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{
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unsigned int status = read_aux_reg(ARC_AUX_STATUS32);
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status |= E1_MASK | E2_MASK;
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/* STATUS32 register is updated indirectly with "FLAG" instruction */
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__asm__("flag %0" : : "r" (status));
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}
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static void print_reg_file(long *reg_rev, int start_num)
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{
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unsigned int i;
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/* Print 3 registers per line */
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for (i = start_num; i < start_num + 25; i++) {
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printf("r%02u: 0x%08lx\t", i, (unsigned long)*reg_rev);
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if (((i + 1) % 3) == 0)
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printf("\n");
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/* Because pt_regs has registers reversed */
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reg_rev--;
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}
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/* Add new-line if none was inserted in the end of loop above */
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if (((i + 1) % 3) != 0)
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printf("\n");
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}
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void show_regs(struct pt_regs *regs)
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{
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printf("ECR:\t0x%08lx\n", regs->ecr);
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printf("RET:\t0x%08lx\nBLINK:\t0x%08lx\nSTAT32:\t0x%08lx\n",
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regs->ret, regs->blink, regs->status32);
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printf("GP: 0x%08lx\t r25: 0x%08lx\t\n", regs->r26, regs->r25);
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printf("BTA: 0x%08lx\t SP: 0x%08lx\t FP: 0x%08lx\n", regs->bta,
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regs->sp, regs->fp);
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printf("LPS: 0x%08lx\tLPE: 0x%08lx\tLPC: 0x%08lx\n", regs->lp_start,
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regs->lp_end, regs->lp_count);
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print_reg_file(&(regs->r0), 0);
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}
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void bad_mode(struct pt_regs *regs)
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{
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if (regs)
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show_regs(regs);
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panic("Resetting CPU ...\n");
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}
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void do_memory_error(unsigned long address, struct pt_regs *regs)
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{
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printf("Memory error exception @ 0x%lx\n", address);
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bad_mode(regs);
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}
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void do_instruction_error(unsigned long address, struct pt_regs *regs)
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{
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printf("Instruction error exception @ 0x%lx\n", address);
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bad_mode(regs);
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}
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void do_machine_check_fault(unsigned long address, struct pt_regs *regs)
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{
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printf("Machine check exception @ 0x%lx\n", address);
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bad_mode(regs);
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}
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void do_interrupt_handler(void)
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{
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printf("Interrupt fired\n");
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bad_mode(0);
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}
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void do_itlb_miss(struct pt_regs *regs)
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{
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printf("I TLB miss exception\n");
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bad_mode(regs);
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}
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void do_dtlb_miss(struct pt_regs *regs)
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{
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printf("D TLB miss exception\n");
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bad_mode(regs);
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}
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void do_tlb_prot_violation(unsigned long address, struct pt_regs *regs)
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{
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printf("TLB protection violation or misaligned access @ 0x%lx\n",
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address);
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bad_mode(regs);
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}
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void do_privilege_violation(struct pt_regs *regs)
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{
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printf("Privilege violation exception\n");
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bad_mode(regs);
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}
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void do_trap(struct pt_regs *regs)
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{
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printf("Trap exception\n");
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bad_mode(regs);
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}
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void do_extension(struct pt_regs *regs)
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{
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printf("Extension instruction exception\n");
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bad_mode(regs);
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}
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#ifdef CONFIG_ISA_ARCV2
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void do_swi(struct pt_regs *regs)
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{
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printf("Software Interrupt exception\n");
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bad_mode(regs);
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}
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void do_divzero(unsigned long address, struct pt_regs *regs)
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{
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printf("Division by zero exception @ 0x%lx\n", address);
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bad_mode(regs);
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}
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void do_dcerror(struct pt_regs *regs)
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{
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printf("Data cache consistency error exception\n");
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bad_mode(regs);
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}
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void do_maligned(unsigned long address, struct pt_regs *regs)
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{
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printf("Misaligned data access exception @ 0x%lx\n", address);
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bad_mode(regs);
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}
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#endif
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