upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
76 lines
1.5 KiB
76 lines
1.5 KiB
/*
|
|
* Copyright (c) 2016-17 Microsemi Corporation.
|
|
* Padmarao Begari, Microsemi Corporation <padmarao.begari@microsemi.com>
|
|
*
|
|
* Copyright (C) 2017 Andes Technology Corporation
|
|
* Rick Chen, Andes Technology Corporation <rick@andestech.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <asm/ptrace.h>
|
|
#include <asm/system.h>
|
|
#include <asm/encoding.h>
|
|
|
|
static void _exit_trap(int code, uint epc, struct pt_regs *regs);
|
|
|
|
int interrupt_init(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* enable interrupts
|
|
*/
|
|
void enable_interrupts(void)
|
|
{
|
|
}
|
|
|
|
/*
|
|
* disable interrupts
|
|
*/
|
|
int disable_interrupts(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
uint handle_trap(uint mcause, uint epc, struct pt_regs *regs)
|
|
{
|
|
uint is_int;
|
|
|
|
is_int = (mcause & MCAUSE_INT);
|
|
if ((is_int) && ((mcause & MCAUSE_CAUSE) == IRQ_M_EXT))
|
|
external_interrupt(0); /* handle_m_ext_interrupt */
|
|
else if ((is_int) && ((mcause & MCAUSE_CAUSE) == IRQ_M_TIMER))
|
|
timer_interrupt(0); /* handle_m_timer_interrupt */
|
|
else
|
|
_exit_trap(mcause, epc, regs);
|
|
|
|
return epc;
|
|
}
|
|
|
|
/*
|
|
*Entry Point for PLIC Interrupt Handler
|
|
*/
|
|
__attribute__((weak)) void external_interrupt(struct pt_regs *regs)
|
|
{
|
|
}
|
|
|
|
__attribute__((weak)) void timer_interrupt(struct pt_regs *regs)
|
|
{
|
|
}
|
|
|
|
static void _exit_trap(int code, uint epc, struct pt_regs *regs)
|
|
{
|
|
static const char *exception_code[] = {
|
|
"Instruction address misaligned",
|
|
"Instruction access fault",
|
|
"Illegal instruction",
|
|
"Breakpoint",
|
|
"Load address misaligned"
|
|
};
|
|
|
|
printf("exception code: %d , %s , epc %08x , ra %08lx\n",
|
|
code, exception_code[code], epc, regs->ra);
|
|
}
|
|
|