[people/ms/u-boot.git] / board / amcc / luan / luan.c

/*
 * (C) Copyright 2005
 * John Otken, jotken@softadvances.com
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * 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., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <common.h>
#include <command.h>
#include <asm/ppc4xx.h>
#include <asm/processor.h>
#include <asm/ppc4xx-isram.h>
#include <spd_sdram.h>
#include "epld.h"

DECLARE_GLOBAL_DATA_PTR;

extern flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */


/*************************************************************************
 *  int board_early_init_f()
 *
 ************************************************************************/
int board_early_init_f(void)
{
	u32 mfr;

	mtebc( PB0AP,  0x03800000 );	/* set chip selects */
	mtebc( PB0CR,  0xffc58000 );	/* ebc0_b0cr, 4MB at 0xffc00000 CS0 */
	mtebc( PB1AP,  0x03800000 );
	mtebc( PB1CR,  0xff018000 );	/* ebc0_b1cr, 1MB at 0xff000000 CS1 */
	mtebc( PB2AP,  0x03800000 );
	mtebc( PB2CR,  0xff838000 );	/* ebc0_b2cr, 2MB at 0xff800000 CS2 */

	mtdcr( UIC1SR, 0xffffffff );	/* Clear all interrupts */
	mtdcr( UIC1ER, 0x00000000 );	/* disable all interrupts */
	mtdcr( UIC1CR, 0x00000000 );	/* Set Critical / Non Critical interrupts */
	mtdcr( UIC1PR, 0x7fff83ff );	/* Set Interrupt Polarities */
	mtdcr( UIC1TR, 0x001f8000 );	/* Set Interrupt Trigger Levels */
	mtdcr( UIC1VR, 0x00000001 );	/* Set Vect base=0,INT31 Highest priority */
	mtdcr( UIC1SR, 0x00000000 );	/* clear all interrupts */
	mtdcr( UIC1SR, 0xffffffff );

	mtdcr( UIC0SR, 0xffffffff );	/* Clear all interrupts */
	mtdcr( UIC0ER, 0x00000000 );	/* disable all interrupts excepted cascade */
	mtdcr( UIC0CR, 0x00000001 );	/* Set Critical / Non Critical interrupts */
	mtdcr( UIC0PR, 0xffffffff );	/* Set Interrupt Polarities */
	mtdcr( UIC0TR, 0x01000004 );	/* Set Interrupt Trigger Levels */
	mtdcr( UIC0VR, 0x00000001 );	/* Set Vect base=0,INT31 Highest priority */
	mtdcr( UIC0SR, 0x00000000 );	/* clear all interrupts */
	mtdcr( UIC0SR, 0xffffffff );

	mfsdr(SDR0_MFR, mfr);
	mfr |= SDR0_MFR_FIXD;		/* Workaround for PCI/DMA */
	mtsdr(SDR0_MFR, mfr);

	return  0;
}


/*************************************************************************
 *  int misc_init_r()
 *
 ************************************************************************/
int misc_init_r(void)
{
	volatile epld_t *x = (epld_t *) CONFIG_SYS_EPLD_BASE;

	/* set modes of operation */
	x->ethuart |= EPLD2_ETH_MODE_10 | EPLD2_ETH_MODE_100 |
		EPLD2_ETH_MODE_1000 | EPLD2_ETH_DUPLEX_MODE;
	/* clear ETHERNET_AUTO_NEGO bit to turn on autonegotiation */
	x->ethuart &= ~EPLD2_ETH_AUTO_NEGO;

	/* put Ethernet+PHY in reset */
	x->ethuart &= ~EPLD2_RESET_ETH_N;
	udelay(10000);
	/* take Ethernet+PHY out of reset */
	x->ethuart |= EPLD2_RESET_ETH_N;

	return  0;
}


/*************************************************************************
 *  int checkboard()
 *
 ************************************************************************/
int checkboard(void)
{
	char buf[64];
	int i = getenv_f("serial#", buf, sizeof(buf));

	printf("Board: Luan - AMCC PPC440SP Evaluation Board");

	if (i > 0) {
		puts(", serial# ");
		puts(buf);
	}
	putc('\n');

	return  0;
}

/*
 * Override the default functions in arch/powerpc/cpu/ppc4xx/44x_spd_ddr2.c with
 * board specific values.
 */
u32 ddr_clktr(u32 default_val) {
	return (SDRAM_CLKTR_CLKP_180_DEG_ADV);
}

/*************************************************************************
 *  hw_watchdog_reset
 *
 *	This routine is called to reset (keep alive) the watchdog timer
 *
 ************************************************************************/
#if defined(CONFIG_HW_WATCHDOG)
void hw_watchdog_reset(void)
{
}
#endif


/*************************************************************************
 *  int on_off()
 *
 ************************************************************************/
static int on_off( const char *s )
{
	if (strcmp(s, "on") == 0) {
		return  1;
	} else if (strcmp(s, "off") == 0) {
		return  0;
	}
	return  -1;
}


/*************************************************************************
 *  void l2cache_disable()
 *
 ************************************************************************/
static void l2cache_disable(void)
{
	mtdcr( L2_CACHE_CFG, 0 );
}


/*************************************************************************
 *  void l2cache_enable()
 *
 ************************************************************************/
static void l2cache_enable(void)	/* see p258 7.4.1 Enabling L2 Cache */
{
	mtdcr( L2_CACHE_CFG, 0x80000000 );	/* enable L2_MODE L2_CFG[L2M] */

	mtdcr( L2_CACHE_ADDR, 0 );		/* set L2_ADDR with all zeros */

	mtdcr( L2_CACHE_CMD, 0x80000000 );	/* issue HCLEAR command via L2_CMD */

	while (!(mfdcr( L2_CACHE_STAT ) & 0x80000000 ))  ;; /* poll L2_SR for completion */

	mtdcr( L2_CACHE_CMD, 0x10000000 );	/* clear cache errors L2_CMD[CCP] */

	mtdcr( L2_CACHE_CMD, 0x08000000 );	/* clear tag errors L2_CMD[CTE] */

	mtdcr( L2_CACHE_SNP0, 0 );		/* snoop registers */
	mtdcr( L2_CACHE_SNP1, 0 );

	__asm__ volatile ("sync");		/* msync */

	mtdcr( L2_CACHE_CFG, 0xe0000000 );	/* inst and data use L2 */

	__asm__ volatile ("sync");
}


/*************************************************************************
 *  int l2cache_status()
 *
 ************************************************************************/
static int l2cache_status(void)
{
	return  (mfdcr( L2_CACHE_CFG ) & 0x60000000) != 0;
}


/*************************************************************************
 *  int do_l2cache()
 *
 ************************************************************************/
int do_l2cache( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[] )
{
	switch (argc) {
	case 2:			/* on / off	*/
		switch (on_off(argv[1])) {
		case 0:	l2cache_disable();
			break;
		case 1:	l2cache_enable();
			break;
		}
		/* FALL TROUGH */
	case 1:			/* get status */
		printf ("L2 Cache is %s\n",
			l2cache_status() ? "ON" : "OFF");
		return 0;
	default:
		return cmd_usage(cmdtp);
	}

	return  0;
}


U_BOOT_CMD(
	l2cache,   2,   1,     do_l2cache,
	"enable or disable L2 cache",
	"[on, off]\n"
	"    - enable or disable L2 cache"
);
Commit	Line	Data
6e7fb6ea SR	1	/*
	2	* (C) Copyright 2005
	3	* John Otken, jotken@softadvances.com
	4	*
	5	* See file CREDITS for list of people who contributed to this
	6	* project.
	7	*
	8	* This program is free software; you can redistribute it and/or
	9	* modify it under the terms of the GNU General Public License as
	10	* published by the Free Software Foundation; either version 2 of
	11	* the License, or (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	21	* MA 02111-1307 USA
	22	*/
	23
	24	#include <common.h>
	25	#include <command.h>
b36df561	26	#include <asm/ppc4xx.h>
6e7fb6ea	27	#include <asm/processor.h>
b14ca4b6	28	#include <asm/ppc4xx-isram.h>
6e7fb6ea SR	29	#include <spd_sdram.h>
	30	#include "epld.h"
	31
d87080b7	32	DECLARE_GLOBAL_DATA_PTR;
6e7fb6ea	33
6d0f6bcf	34	extern flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
6e7fb6ea SR	35
	36
	37	/*************************************************************************
	38	* int board_early_init_f()
	39	*
	40	************************************************************************/
	41	int board_early_init_f(void)
	42	{
a27044b1 SR	43	u32 mfr;
a27044b1 SR	44
d1c3b275 SR	45	mtebc( PB0AP, 0x03800000 ); /* set chip selects */
	46	mtebc( PB0CR, 0xffc58000 ); /* ebc0_b0cr, 4MB at 0xffc00000 CS0 */
	47	mtebc( PB1AP, 0x03800000 );
	48	mtebc( PB1CR, 0xff018000 ); /* ebc0_b1cr, 1MB at 0xff000000 CS1 */
	49	mtebc( PB2AP, 0x03800000 );
	50	mtebc( PB2CR, 0xff838000 ); /* ebc0_b2cr, 2MB at 0xff800000 CS2 */
6e7fb6ea	51
952e7760 SR	52	mtdcr( UIC1SR, 0xffffffff ); /* Clear all interrupts */
	53	mtdcr( UIC1ER, 0x00000000 ); /* disable all interrupts */
	54	mtdcr( UIC1CR, 0x00000000 ); /* Set Critical / Non Critical interrupts */
	55	mtdcr( UIC1PR, 0x7fff83ff ); /* Set Interrupt Polarities */
	56	mtdcr( UIC1TR, 0x001f8000 ); /* Set Interrupt Trigger Levels */
	57	mtdcr( UIC1VR, 0x00000001 ); /* Set Vect base=0,INT31 Highest priority */
	58	mtdcr( UIC1SR, 0x00000000 ); /* clear all interrupts */
	59	mtdcr( UIC1SR, 0xffffffff );
6e7fb6ea	60
952e7760 SR	61	mtdcr( UIC0SR, 0xffffffff ); /* Clear all interrupts */
	62	mtdcr( UIC0ER, 0x00000000 ); /* disable all interrupts excepted cascade */
	63	mtdcr( UIC0CR, 0x00000001 ); /* Set Critical / Non Critical interrupts */
	64	mtdcr( UIC0PR, 0xffffffff ); /* Set Interrupt Polarities */
	65	mtdcr( UIC0TR, 0x01000004 ); /* Set Interrupt Trigger Levels */
	66	mtdcr( UIC0VR, 0x00000001 ); /* Set Vect base=0,INT31 Highest priority */
	67	mtdcr( UIC0SR, 0x00000000 ); /* clear all interrupts */
	68	mtdcr( UIC0SR, 0xffffffff );
6e7fb6ea	69
d1c3b275	70	mfsdr(SDR0_MFR, mfr);
a27044b1	71	mfr \|= SDR0_MFR_FIXD; /* Workaround for PCI/DMA */
d1c3b275	72	mtsdr(SDR0_MFR, mfr);
a27044b1	73
6e7fb6ea SR	74	return 0;
	75	}
	76
	77
	78	/*************************************************************************
	79	* int misc_init_r()
	80	*
	81	************************************************************************/
	82	int misc_init_r(void)
	83	{
6d0f6bcf	84	volatile epld_t x = (epld_t ) CONFIG_SYS_EPLD_BASE;
2db64784 GB	85
	86	/* set modes of operation */
	87	x->ethuart \|= EPLD2_ETH_MODE_10 \| EPLD2_ETH_MODE_100 \|
	88	EPLD2_ETH_MODE_1000 \| EPLD2_ETH_DUPLEX_MODE;
	89	/* clear ETHERNET_AUTO_NEGO bit to turn on autonegotiation */
	90	x->ethuart &= ~EPLD2_ETH_AUTO_NEGO;
738815c0	91
2db64784 GB	92	/* put Ethernet+PHY in reset */
	93	x->ethuart &= ~EPLD2_RESET_ETH_N;
	94	udelay(10000);
	95	/* take Ethernet+PHY out of reset */
	96	x->ethuart \|= EPLD2_RESET_ETH_N;
6e7fb6ea SR	97
	98	return 0;
	99	}
	100
	101
	102	/*************************************************************************
	103	* int checkboard()
	104	*
	105	************************************************************************/
	106	int checkboard(void)
	107	{
f0c0b3a9 WD	108	char buf[64];
f0c0b3a9 WD	109	int i = getenv_f("serial#", buf, sizeof(buf));
6e7fb6ea SR	110
	111	printf("Board: Luan - AMCC PPC440SP Evaluation Board");
	112
f0c0b3a9	113	if (i > 0) {
6e7fb6ea	114	puts(", serial# ");
f0c0b3a9	115	puts(buf);
6e7fb6ea SR	116	}
	117	putc('\n');
	118
	119	return 0;
	120	}
	121
2a49fc17	122	/*
a47a12be	123	* Override the default functions in arch/powerpc/cpu/ppc4xx/44x_spd_ddr2.c with
2a49fc17 SR	124	* board specific values.
	125	*/
	126	u32 ddr_clktr(u32 default_val) {
	127	return (SDRAM_CLKTR_CLKP_180_DEG_ADV);
	128	}
6e7fb6ea	129
6e7fb6ea SR	130	/*************************************************************************
	131	* hw_watchdog_reset
	132	*
	133	* This routine is called to reset (keep alive) the watchdog timer
	134	*
	135	************************************************************************/
	136	#if defined(CONFIG_HW_WATCHDOG)
	137	void hw_watchdog_reset(void)
	138	{
	139	}
	140	#endif
	141
	142
	143	/*************************************************************************
	144	* int on_off()
	145	*
	146	************************************************************************/
	147	static int on_off( const char *s )
	148	{
	149	if (strcmp(s, "on") == 0) {
	150	return 1;
	151	} else if (strcmp(s, "off") == 0) {
	152	return 0;
	153	}
	154	return -1;
	155	}
	156
	157
	158	/*************************************************************************
	159	* void l2cache_disable()
	160	*
	161	************************************************************************/
	162	static void l2cache_disable(void)
	163	{
b14ca4b6	164	mtdcr( L2_CACHE_CFG, 0 );
6e7fb6ea SR	165	}
	166
	167
	168	/*************************************************************************
	169	* void l2cache_enable()
	170	*
	171	************************************************************************/
	172	static void l2cache_enable(void) /* see p258 7.4.1 Enabling L2 Cache */
	173	{
b14ca4b6	174	mtdcr( L2_CACHE_CFG, 0x80000000 ); /* enable L2_MODE L2_CFG[L2M] */
6e7fb6ea	175
b14ca4b6	176	mtdcr( L2_CACHE_ADDR, 0 ); /* set L2_ADDR with all zeros */
6e7fb6ea	177
b14ca4b6	178	mtdcr( L2_CACHE_CMD, 0x80000000 ); /* issue HCLEAR command via L2_CMD */
6e7fb6ea	179
b14ca4b6	180	while (!(mfdcr( L2_CACHE_STAT ) & 0x80000000 )) ;; /* poll L2_SR for completion */
6e7fb6ea	181
b14ca4b6	182	mtdcr( L2_CACHE_CMD, 0x10000000 ); /* clear cache errors L2_CMD[CCP] */
6e7fb6ea	183
b14ca4b6	184	mtdcr( L2_CACHE_CMD, 0x08000000 ); /* clear tag errors L2_CMD[CTE] */
6e7fb6ea	185
b14ca4b6 DM	186	mtdcr( L2_CACHE_SNP0, 0 ); /* snoop registers */
b14ca4b6 DM	187	mtdcr( L2_CACHE_SNP1, 0 );
6e7fb6ea SR	188
	189	__asm__ volatile ("sync"); /* msync */
	190
b14ca4b6	191	mtdcr( L2_CACHE_CFG, 0xe0000000 ); /* inst and data use L2 */
6e7fb6ea SR	192
	193	__asm__ volatile ("sync");
	194	}
	195
	196
	197	/*************************************************************************
	198	* int l2cache_status()
	199	*
	200	************************************************************************/
	201	static int l2cache_status(void)
	202	{
b14ca4b6	203	return (mfdcr( L2_CACHE_CFG ) & 0x60000000) != 0;
6e7fb6ea SR	204	}
	205
	206
	207	/*************************************************************************
	208	* int do_l2cache()
	209	*
	210	************************************************************************/
54841ab5	211	int do_l2cache( cmd_tbl_t cmdtp, int flag, int argc, char const argv[] )
6e7fb6ea SR	212	{
	213	switch (argc) {
	214	case 2: /* on / off */
	215	switch (on_off(argv[1])) {
	216	case 0: l2cache_disable();
	217	break;
	218	case 1: l2cache_enable();
	219	break;
	220	}
	221	/* FALL TROUGH */
	222	case 1: /* get status */
	223	printf ("L2 Cache is %s\n",
	224	l2cache_status() ? "ON" : "OFF");
	225	return 0;
	226	default:
47e26b1b	227	return cmd_usage(cmdtp);
6e7fb6ea SR	228	}
	229
	230	return 0;
	231	}
	232
	233
	234	U_BOOT_CMD(
	235	l2cache, 2, 1, do_l2cache,
2fb2604d	236	"enable or disable L2 cache",
6e7fb6ea	237	"[on, off]\n"
a89c33db WD	238	" - enable or disable L2 cache"
a89c33db WD	239	);