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https://github.com/AsahiLinux/u-boot
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aa6e94deab
The rest of the unmigrated CONFIG symbols in the CONFIG_SYS_SDRAM namespace do not easily transition to Kconfig. In many cases they likely should come from the device tree instead. Move these out of CONFIG namespace and in to CFG namespace. Signed-off-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org>
141 lines
3.2 KiB
C
141 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 1994 - 1999, 2000, 01, 06 Ralf Baechle
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* Copyright (C) 1995, 1996 Paul M. Antoine
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* Copyright (C) 1998 Ulf Carlsson
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* Copyright (C) 1999 Silicon Graphics, Inc.
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* Kevin D. Kissell, kevink@mips.com and Carsten Langgaard, carstenl@mips.com
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* Copyright (C) 2002, 2003, 2004, 2005, 2007 Maciej W. Rozycki
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* Copyright (C) 2000, 2001, 2012 MIPS Technologies, Inc. All rights reserved.
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* Copyright (C) 2014, Imagination Technologies Ltd.
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*/
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#include <common.h>
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#include <asm/global_data.h>
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#include <asm/ptrace.h>
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#include <cpu_func.h>
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#include <hang.h>
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#include <init.h>
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#include <log.h>
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#include <asm/mipsregs.h>
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#include <asm/addrspace.h>
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#include <asm/system.h>
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DECLARE_GLOBAL_DATA_PTR;
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static unsigned long saved_ebase;
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static void show_regs(const struct pt_regs *regs)
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{
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const int field = 2 * sizeof(unsigned long);
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unsigned int cause = regs->cp0_cause;
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unsigned int exccode;
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int i;
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/*
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* Saved main processor registers
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*/
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for (i = 0; i < 32; ) {
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if ((i % 4) == 0)
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printf("$%2d :", i);
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if (i == 0)
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printf(" %0*lx", field, 0UL);
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else if (i == 26 || i == 27)
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printf(" %*s", field, "");
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else
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printf(" %0*lx", field, regs->regs[i]);
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i++;
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if ((i % 4) == 0)
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puts("\n");
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}
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printf("Hi : %0*lx\n", field, regs->hi);
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printf("Lo : %0*lx\n", field, regs->lo);
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/*
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* Saved cp0 registers
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*/
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printf("epc : %0*lx (text %0*lx)\n", field, regs->cp0_epc,
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field, regs->cp0_epc - gd->reloc_off);
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printf("ra : %0*lx (text %0*lx)\n", field, regs->regs[31],
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field, regs->regs[31] - gd->reloc_off);
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printf("Status: %08x\n", (uint32_t) regs->cp0_status);
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exccode = (cause & CAUSEF_EXCCODE) >> CAUSEB_EXCCODE;
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printf("Cause : %08x (ExcCode %02x)\n", cause, exccode);
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if (1 <= exccode && exccode <= 5)
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printf("BadVA : %0*lx\n", field, regs->cp0_badvaddr);
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printf("PrId : %08x\n", read_c0_prid());
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}
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void do_reserved(const struct pt_regs *regs)
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{
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puts("\nOoops:\n");
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show_regs(regs);
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hang();
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}
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void do_ejtag_debug(const struct pt_regs *regs)
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{
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const int field = 2 * sizeof(unsigned long);
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unsigned long depc;
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unsigned int debug;
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depc = read_c0_depc();
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debug = read_c0_debug();
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printf("SDBBP EJTAG debug exception: c0_depc = %0*lx, DEBUG = %08x\n",
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field, depc, debug);
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}
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static void set_handler(unsigned long offset, void *addr, unsigned long size)
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{
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unsigned long ebase = gd->irq_sp;
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memcpy((void *)(ebase + offset), addr, size);
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flush_cache(ebase + offset, size);
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}
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static void trap_init(ulong reloc_addr)
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{
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unsigned long ebase = gd->irq_sp;
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set_handler(0x180, &except_vec3_generic, 0x80);
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set_handler(0x280, &except_vec_ejtag_debug, 0x80);
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saved_ebase = read_c0_ebase() & 0xfffff000;
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/* Set WG bit on Octeon to enable writing to bits 63:30 */
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if (IS_ENABLED(CONFIG_ARCH_OCTEON))
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ebase |= MIPS_EBASE_WG;
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write_c0_ebase(ebase);
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clear_c0_status(ST0_BEV);
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execution_hazard_barrier();
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}
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void trap_restore(void)
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{
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set_c0_status(ST0_BEV);
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execution_hazard_barrier();
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#ifdef CONFIG_OVERRIDE_EXCEPTION_VECTOR_BASE
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write_c0_ebase(CONFIG_NEW_EXCEPTION_VECTOR_BASE & 0xfffff000);
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#else
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write_c0_ebase(saved_ebase);
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#endif
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clear_c0_status(ST0_BEV);
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execution_hazard_barrier();
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}
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int arch_initr_trap(void)
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{
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trap_init(CFG_SYS_SDRAM_BASE);
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return 0;
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}
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