/*
 *  $Id$
 *
 *  ADM5120 specific prom routines
 *
 *  Copyright (C) 2007 OpenWrt.org
 *  Copyright (C) 2007 Gabor Juhos <juhosg at openwrt.org>
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU General Public License
 *  as published by the Free Software Foundation; either version 2
 *  of the License, or (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the
 *  Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 *  Boston, MA  02110-1301, USA.
 *
 */

#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/mm.h>

#include <asm/io.h>
#include <asm/bootinfo.h>
#include <asm/addrspace.h>

#include <adm5120_info.h>
#include <adm5120_defs.h>
#include <adm5120_uart.h>

#include <prom/cfe.h>
#include <prom/generic.h>
#include <prom/routerboot.h>
#include <prom/myloader.h>
#include <prom/zynos.h>

unsigned int adm5120_prom_type	= ADM5120_PROM_GENERIC;

struct board_desc {
	unsigned long	mach_type;
	char		*name;
};

#define DEFBOARD(n, mt) { .mach_type = (mt), .name = (n)}
static struct board_desc common_boards[] __initdata = {
	/* Cellvision/SparkLAN boards */
	DEFBOARD("CAS-630",		MACH_ADM5120_CAS630),
	DEFBOARD("CAS-670",		MACH_ADM5120_CAS670),
	DEFBOARD("CAS-771",		MACH_ADM5120_CAS771),
	DEFBOARD("CAS-790",		MACH_ADM5120_CAS790),
	DEFBOARD("CAS-861",		MACH_ADM5120_CAS861),
	/* Compex boards */
	DEFBOARD("WP54G-WRT",		MACH_ADM5120_WP54G_WRT),
	/* Edimax boards */
	DEFBOARD("BR-6104K",		MACH_ADM5120_BR6104K),
	DEFBOARD("BR-6104KP",		MACH_ADM5120_BR6104K),
	/* Infineon boards */
	DEFBOARD("EASY 5120P-ATA",	MACH_ADM5120_EASY5120PATA),
	DEFBOARD("EASY 5120-RT",	MACH_ADM5120_EASY5120RT),
	DEFBOARD("EASY 5120-WVoIP",	MACH_ADM5120_EASY5120WVOIP),
	DEFBOARD("EASY 83000",		MACH_ADM5120_EASY83000),
	/* Mikrotik RouterBOARDs */
	DEFBOARD("111",			MACH_ADM5120_RB_111),
	DEFBOARD("112",			MACH_ADM5120_RB_112),
	DEFBOARD("133",			MACH_ADM5120_RB_133),
	DEFBOARD("133C",		MACH_ADM5120_RB_133C),
	DEFBOARD("133C3",		MACH_ADM5120_RB_133C),
	DEFBOARD("150",			MACH_ADM5120_RB_153), /* it's intentional */
	DEFBOARD("153",			MACH_ADM5120_RB_153),
	DEFBOARD("miniROUTER",		MACH_ADM5120_RB_150),
};

static unsigned long __init find_machtype_byname(char *name)
{
	unsigned long ret;
	int i;

	ret = MACH_ADM5120_GENERIC;
	if (name == NULL)
		goto out;

	if (*name == '\0')
		goto out;

	for (i=0; i<ARRAY_SIZE(common_boards); i++) {
		if (strcmp(common_boards[i].name, name) == 0) {
			ret = common_boards[i].mach_type;
			break;
		}
	}

out:
	return ret;
}

static unsigned long __init detect_machtype_routerboot(void)
{
	char *name;

	name = routerboot_get_boardname();
	return find_machtype_byname(name);
}

static unsigned long __init detect_machtype_generic(void)
{
	char *name;

	name = generic_prom_getenv("board_name");
	return find_machtype_byname(name);
}

unsigned long __init detect_machtype_cfe(void)
{
	char *name;

	name = cfe_getenv("BOARD_NAME");
	return find_machtype_byname(name);
}

static struct {
	unsigned long	mach_type;
	u16		vendor_id;
	u16		board_id;
} zynos_boards[] __initdata = {
#define ZYNOS_BOARD(vi, bi, mt) { .vendor_id = (vi), .board_id = (bi), \
		.mach_type = (mt) }

#define ZYXEL_BOARD(bi, mt) ZYNOS_BOARD(ZYNOS_VENDOR_ID_ZYXEL, bi, mt)
#define DLINK_BOARD(bi, mt) ZYNOS_BOARD(ZYNOS_VENDOR_ID_DLINK, bi, mt)
#define LUCENT_BOARD(bi, mt) ZYNOS_BOARD(ZYNOS_VENDOR_ID_LUCENT, bi, mt)
	ZYXEL_BOARD(ZYNOS_BOARD_HS100,	MACH_ADM5120_HS100),
	ZYXEL_BOARD(ZYNOS_BOARD_P334,	MACH_ADM5120_P334),
	ZYXEL_BOARD(ZYNOS_BOARD_P334U,	MACH_ADM5120_P334U),
	ZYXEL_BOARD(ZYNOS_BOARD_P334W,	MACH_ADM5120_P334W),
	ZYXEL_BOARD(ZYNOS_BOARD_P334WH,	MACH_ADM5120_P334WH),
	ZYXEL_BOARD(ZYNOS_BOARD_P334WHD, MACH_ADM5120_P334WHD),
	ZYXEL_BOARD(ZYNOS_BOARD_P334WT,	MACH_ADM5120_P334WT),
	ZYXEL_BOARD(ZYNOS_BOARD_P335,	MACH_ADM5120_P335),
	ZYXEL_BOARD(ZYNOS_BOARD_P335PLUS, MACH_ADM5120_P335PLUS),
	ZYXEL_BOARD(ZYNOS_BOARD_P335U,	MACH_ADM5120_P335U)
};

static unsigned long __init detect_machtype_bootbase(void)
{
	unsigned long ret;
	int i;

	ret = MACH_ADM5120_GENERIC;
	for (i=0; i<ARRAY_SIZE(zynos_boards); i++) {
		if (zynos_boards[i].vendor_id == bootbase_info.vendor_id &&
			zynos_boards[i].board_id == bootbase_info.board_id) {
			ret = zynos_boards[i].mach_type;
			break;
		}
	}

	return ret;
}

static struct {
	unsigned long	mach_type;
	u16	vid;
	u16	did;
	u16	svid;
	u16	sdid;
} mylo_boards[]  __initdata = {
#define MYLO_BOARD(v,d,sv,sd,mt) { .vid = (v), .did = (d), .svid = (sv), \
	.sdid = (sd), .mach_type = (mt) }
#define COMPEX_BOARD(d,mt) MYLO_BOARD(VENID_COMPEX,(d),VENID_COMPEX,(d),(mt))

	COMPEX_BOARD(DEVID_COMPEX_NP27G, MACH_ADM5120_NP27G),
	COMPEX_BOARD(DEVID_COMPEX_NP28G, MACH_ADM5120_NP28G),
	COMPEX_BOARD(DEVID_COMPEX_NP28GHS, MACH_ADM5120_NP28GHS),
	COMPEX_BOARD(DEVID_COMPEX_WP54G, MACH_ADM5120_WP54G),
	COMPEX_BOARD(DEVID_COMPEX_WP54Gv1C, MACH_ADM5120_WP54Gv1C),
	COMPEX_BOARD(DEVID_COMPEX_WP54AG, MACH_ADM5120_WP54AG),
	COMPEX_BOARD(DEVID_COMPEX_WPP54G, MACH_ADM5120_WPP54G),
	COMPEX_BOARD(DEVID_COMPEX_WPP54AG, MACH_ADM5120_WPP54AG),
};

static unsigned long __init detect_machtype_myloader(void)
{
	unsigned long ret;
	int i;

	ret = MACH_ADM5120_GENERIC;
	for (i=0; i<ARRAY_SIZE(mylo_boards); i++) {
		if (mylo_boards[i].vid == myloader_info.vid &&
			mylo_boards[i].did == myloader_info.did &&
			mylo_boards[i].svid == myloader_info.svid &&
			mylo_boards[i].sdid == myloader_info.sdid) {
			ret = mylo_boards[i].mach_type;
			break;
		}
	}

	return ret;
}

static void __init prom_detect_machtype(void)
{
	if (bootbase_present()) {
		adm5120_prom_type = ADM5120_PROM_BOOTBASE;
		mips_machtype = detect_machtype_bootbase();
		return;
	}

	if (cfe_present()) {
		adm5120_prom_type = ADM5120_PROM_CFE;
		mips_machtype = detect_machtype_cfe();
		return;
	}

	if (myloader_present()) {
		adm5120_prom_type = ADM5120_PROM_MYLOADER;
		mips_machtype = detect_machtype_myloader();
		return;
	}

	if (routerboot_present()) {
		adm5120_prom_type = ADM5120_PROM_ROUTERBOOT;
		mips_machtype = detect_machtype_routerboot();
		return;
	}

	if (generic_prom_present()) {
		adm5120_prom_type = ADM5120_PROM_GENERIC;
		mips_machtype = detect_machtype_generic();
		return;
	}

	mips_machtype = MACH_ADM5120_GENERIC;
}

/* TODO: this is an ugly hack for RouterBOARDS */
extern char _image_cmdline;
static void __init prom_init_cmdline(void)
{
	char *cmd;

	/* init command line, register a default kernel command line */
	cmd = &_image_cmdline + 8;
	if( strlen(cmd) > 0) strcpy( &(arcs_cmdline[0]), cmd);
		else strcpy(&(arcs_cmdline[0]), CONFIG_CMDLINE);

}

#define UART_READ(r) \
	__raw_readl((void __iomem *)(KSEG1ADDR(ADM5120_UART0_BASE)+(r)))
#define UART_WRITE(r, v) \
	__raw_writel((v), (void __iomem *)(KSEG1ADDR(ADM5120_UART0_BASE)+(r)))

void __init prom_putchar(char ch)
{
	while ((UART_READ(UART_REG_FLAG) & UART_FLAG_TXFE) == 0);
	UART_WRITE(UART_REG_DATA, ch);
	while ((UART_READ(UART_REG_FLAG) & UART_FLAG_TXFE) == 0);
}

void __init prom_init(void)
{
	mips_machgroup = MACH_GROUP_ADM5120;
	prom_detect_machtype();

	prom_init_cmdline();
}

void __init prom_free_prom_memory(void)
{
	/* We do not have to prom memory to free */
}