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linux-next/arch/mips/lantiq/falcon/prom.c
Thomas Gleixner d2912cb15b treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
Based on 2 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation #

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 4122 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Enrico Weigelt <info@metux.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-19 17:09:55 +02:00

91 lines
2.0 KiB
C

// SPDX-License-Identifier: GPL-2.0-only
/*
*
* Copyright (C) 2012 Thomas Langer <thomas.langer@lantiq.com>
* Copyright (C) 2012 John Crispin <john@phrozen.org>
*/
#include <linux/kernel.h>
#include <asm/cacheflush.h>
#include <asm/traps.h>
#include <asm/io.h>
#include <lantiq_soc.h>
#include "../prom.h"
#define SOC_FALCON "Falcon"
#define SOC_FALCON_D "Falcon-D"
#define SOC_FALCON_V "Falcon-V"
#define SOC_FALCON_M "Falcon-M"
#define COMP_FALCON "lantiq,falcon"
#define PART_SHIFT 12
#define PART_MASK 0x0FFFF000
#define REV_SHIFT 28
#define REV_MASK 0xF0000000
#define SREV_SHIFT 22
#define SREV_MASK 0x03C00000
#define TYPE_SHIFT 26
#define TYPE_MASK 0x3C000000
/* reset, nmi and ejtag exception vectors */
#define BOOT_REG_BASE (KSEG1 | 0x1F200000)
#define BOOT_RVEC (BOOT_REG_BASE | 0x00)
#define BOOT_NVEC (BOOT_REG_BASE | 0x04)
#define BOOT_EVEC (BOOT_REG_BASE | 0x08)
void __init ltq_soc_nmi_setup(void)
{
extern void (*nmi_handler)(void);
ltq_w32((unsigned long)&nmi_handler, (void *)BOOT_NVEC);
}
void __init ltq_soc_ejtag_setup(void)
{
extern void (*ejtag_debug_handler)(void);
ltq_w32((unsigned long)&ejtag_debug_handler, (void *)BOOT_EVEC);
}
void __init ltq_soc_detect(struct ltq_soc_info *i)
{
u32 type;
i->partnum = (ltq_r32(FALCON_CHIPID) & PART_MASK) >> PART_SHIFT;
i->rev = (ltq_r32(FALCON_CHIPID) & REV_MASK) >> REV_SHIFT;
i->srev = ((ltq_r32(FALCON_CHIPCONF) & SREV_MASK) >> SREV_SHIFT);
i->compatible = COMP_FALCON;
i->type = SOC_TYPE_FALCON;
sprintf(i->rev_type, "%c%d%d", (i->srev & 0x4) ? ('B') : ('A'),
i->rev & 0x7, (i->srev & 0x3) + 1);
switch (i->partnum) {
case SOC_ID_FALCON:
type = (ltq_r32(FALCON_CHIPTYPE) & TYPE_MASK) >> TYPE_SHIFT;
switch (type) {
case 0:
i->name = SOC_FALCON_D;
break;
case 1:
i->name = SOC_FALCON_V;
break;
case 2:
i->name = SOC_FALCON_M;
break;
default:
i->name = SOC_FALCON;
break;
}
break;
default:
unreachable();
break;
}
board_nmi_handler_setup = ltq_soc_nmi_setup;
board_ejtag_handler_setup = ltq_soc_ejtag_setup;
}