prom.c

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/*
 *  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.
 *
 *  Copyright (C) 2010 John Crispin <[email protected]>
 */

#include <linux/export.h>
#include <linux/clk.h>
#include <asm/bootinfo.h>
#include <asm/time.h>

#include <lantiq_soc.h>

#include "../prom.h"

#define SOC_DANUBE  "Danube"
#define SOC_TWINPASS    "Twinpass"
#define SOC_AMAZON_SE   "Amazon_SE"
#define SOC_AR9     "AR9"
#define SOC_GR9     "GR9"
#define SOC_VR9     "VR9"

#define COMP_DANUBE "lantiq,danube"
#define COMP_TWINPASS   "lantiq,twinpass"
#define COMP_AMAZON_SE  "lantiq,ase"
#define COMP_AR9    "lantiq,ar9"
#define COMP_GR9    "lantiq,gr9"
#define COMP_VR9    "lantiq,vr9"

#define PART_SHIFT  12
#define PART_MASK   0x0FFFFFFF
#define REV_SHIFT   28
#define REV_MASK    0xF0000000

void __init ltq_soc_detect(struct ltq_soc_info *i)
{
    i->partnum = (ltq_r32(LTQ_MPS_CHIPID) & PART_MASK) >> PART_SHIFT;
    i->rev = (ltq_r32(LTQ_MPS_CHIPID) & REV_MASK) >> REV_SHIFT;
    sprintf(i->rev_type, "1.%d", i->rev);
    switch (i->partnum) {
    case SOC_ID_DANUBE1:
    case SOC_ID_DANUBE2:
        i->name = SOC_DANUBE;
        i->type = SOC_TYPE_DANUBE;
        i->compatible = COMP_DANUBE;
        break;

    case SOC_ID_TWINPASS:
        i->name = SOC_TWINPASS;
        i->type = SOC_TYPE_DANUBE;
        i->compatible = COMP_TWINPASS;
        break;

    case SOC_ID_ARX188:
    case SOC_ID_ARX168_1:
    case SOC_ID_ARX168_2:
    case SOC_ID_ARX182:
        i->name = SOC_AR9;
        i->type = SOC_TYPE_AR9;
        i->compatible = COMP_AR9;
        break;

    case SOC_ID_GRX188:
    case SOC_ID_GRX168:
        i->name = SOC_GR9;
        i->type = SOC_TYPE_AR9;
        i->compatible = COMP_GR9;
        break;

    case SOC_ID_AMAZON_SE_1:
    case SOC_ID_AMAZON_SE_2:
#ifdef CONFIG_PCI
        panic("ase is only supported for non pci kernels");
#endif
        i->name = SOC_AMAZON_SE;
        i->type = SOC_TYPE_AMAZON_SE;
        i->compatible = COMP_AMAZON_SE;
        break;

    case SOC_ID_VRX282:
    case SOC_ID_VRX268:
    case SOC_ID_VRX288:
        i->name = SOC_VR9;
        i->type = SOC_TYPE_VR9;
        i->compatible = COMP_VR9;
        break;

    case SOC_ID_GRX268:
    case SOC_ID_GRX288:
        i->name = SOC_GR9;
        i->type = SOC_TYPE_VR9;
        i->compatible = COMP_GR9;
        break;

    case SOC_ID_VRX268_2:
    case SOC_ID_VRX288_2:
        i->name = SOC_VR9;
        i->type = SOC_TYPE_VR9_2;
        i->compatible = COMP_VR9;
        break;

    case SOC_ID_GRX282_2:
    case SOC_ID_GRX288_2:
        i->name = SOC_GR9;
        i->type = SOC_TYPE_VR9_2;
        i->compatible = COMP_GR9;
        break;

    default:
        unreachable();
        break;
    }
}