board/amcc/ocotea/ocotea.c - platform/external/u-boot - Gitiles

 /*
  *  Copyright (C) 2004 PaulReynolds@lhsolutions.com
  *
  * (C) Copyright 2005
  * Stefan Roese, DENX Software Engineering, sr@denx.de.
  *
  * 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 "ocotea.h"
 #include <asm/processor.h>
 #include <spd_sdram.h>
 #include <ppc4xx_enet.h>

 DECLARE_GLOBAL_DATA_PTR;

 #define BOOT_SMALL_FLASH	32	/* 00100000 */
 #define FLASH_ONBD_N		2	/* 00000010 */
 #define FLASH_SRAM_SEL		1	/* 00000001 */

 long int fixed_sdram (void);
 void fpga_init (void);

 int board_early_init_f (void)
 {
 	unsigned long mfr;
 	unsigned char *fpga_base = (unsigned char *) CFG_FPGA_BASE;
 	unsigned char switch_status;
 	unsigned long cs0_base;
 	unsigned long cs0_size;
 	unsigned long cs0_twt;
 	unsigned long cs2_base;
 	unsigned long cs2_size;
 	unsigned long cs2_twt;

 	/*-------------------------------------------------------------------------+
 	  | Initialize EBC CONFIG
 	  +-------------------------------------------------------------------------*/
 	mtebc(xbcfg, EBC_CFG_LE_UNLOCK |
 	      EBC_CFG_PTD_ENABLE | EBC_CFG_RTC_64PERCLK |
 	      EBC_CFG_ATC_PREVIOUS | EBC_CFG_DTC_PREVIOUS |
 	      EBC_CFG_CTC_PREVIOUS | EBC_CFG_EMC_NONDEFAULT |
 	      EBC_CFG_PME_DISABLE | EBC_CFG_PR_32);

 	/*-------------------------------------------------------------------------+
 	  | FPGA. Initialize bank 7 with default values.
 	  +-------------------------------------------------------------------------*/
 	mtebc(pb7ap, EBC_BXAP_BME_DISABLED|EBC_BXAP_TWT_ENCODE(7)|
 	      EBC_BXAP_BCE_DISABLE|
 	      EBC_BXAP_CSN_ENCODE(1)|EBC_BXAP_OEN_ENCODE(1)|
 	      EBC_BXAP_WBN_ENCODE(1)|EBC_BXAP_WBF_ENCODE(1)|
 	      EBC_BXAP_TH_ENCODE(1)|EBC_BXAP_RE_DISABLED|
 	      EBC_BXAP_BEM_WRITEONLY|
 	      EBC_BXAP_PEN_DISABLED);
 	mtebc(pb7cr, EBC_BXCR_BAS_ENCODE(0x48300000)|
 	      EBC_BXCR_BS_1MB|EBC_BXCR_BU_RW|EBC_BXCR_BW_8BIT);

 	/* read FPGA base register FPGA_REG0 */
 	switch_status = *fpga_base;

 	if (switch_status & 0x40) {
 		cs0_base = 0xFFE00000;
 		cs0_size = EBC_BXCR_BS_2MB;
 		cs0_twt = 8;
 		cs2_base = 0xFF800000;
 		cs2_size = EBC_BXCR_BS_4MB;
 		cs2_twt = 10;
 	} else {
 		cs0_base = 0xFFC00000;
 		cs0_size = EBC_BXCR_BS_4MB;
 		cs0_twt = 10;
 		cs2_base = 0xFF800000;
 		cs2_size = EBC_BXCR_BS_2MB;
 		cs2_twt = 8;
 	}

 	/*-------------------------------------------------------------------------+
 	  | 1 MB FLASH / 1 MB SRAM. Initialize bank 0 with default values.
 	  +-------------------------------------------------------------------------*/
 	mtebc(pb0ap, EBC_BXAP_BME_DISABLED|EBC_BXAP_TWT_ENCODE(cs0_twt)|
 	      EBC_BXAP_BCE_DISABLE|
 	      EBC_BXAP_CSN_ENCODE(1)|EBC_BXAP_OEN_ENCODE(1)|
 	      EBC_BXAP_WBN_ENCODE(1)|EBC_BXAP_WBF_ENCODE(1)|
 	      EBC_BXAP_TH_ENCODE(1)|EBC_BXAP_RE_DISABLED|
 	      EBC_BXAP_BEM_WRITEONLY|
 	      EBC_BXAP_PEN_DISABLED);
 	mtebc(pb0cr, EBC_BXCR_BAS_ENCODE(cs0_base)|
 	      cs0_size|EBC_BXCR_BU_RW|EBC_BXCR_BW_8BIT);

 	/*-------------------------------------------------------------------------+
 	  | 8KB NVRAM/RTC. Initialize bank 1 with default values.
 	  +-------------------------------------------------------------------------*/
 	mtebc(pb1ap, EBC_BXAP_BME_DISABLED|EBC_BXAP_TWT_ENCODE(10)|
 	      EBC_BXAP_BCE_DISABLE|
 	      EBC_BXAP_CSN_ENCODE(1)|EBC_BXAP_OEN_ENCODE(1)|
 	      EBC_BXAP_WBN_ENCODE(1)|EBC_BXAP_WBF_ENCODE(1)|
 	      EBC_BXAP_TH_ENCODE(1)|EBC_BXAP_RE_DISABLED|
 	      EBC_BXAP_BEM_WRITEONLY|
 	      EBC_BXAP_PEN_DISABLED);
 	mtebc(pb1cr, EBC_BXCR_BAS_ENCODE(0x48000000)|
 	      EBC_BXCR_BS_1MB|EBC_BXCR_BU_RW|EBC_BXCR_BW_8BIT);

 	/*-------------------------------------------------------------------------+
 	  | 4 MB FLASH. Initialize bank 2 with default values.
 	  +-------------------------------------------------------------------------*/
 	mtebc(pb2ap, EBC_BXAP_BME_DISABLED|EBC_BXAP_TWT_ENCODE(cs2_twt)|
 	      EBC_BXAP_BCE_DISABLE|
 	      EBC_BXAP_CSN_ENCODE(1)|EBC_BXAP_OEN_ENCODE(1)|
 	      EBC_BXAP_WBN_ENCODE(1)|EBC_BXAP_WBF_ENCODE(1)|
 	      EBC_BXAP_TH_ENCODE(1)|EBC_BXAP_RE_DISABLED|
 	      EBC_BXAP_BEM_WRITEONLY|
 	      EBC_BXAP_PEN_DISABLED);
 	mtebc(pb2cr, EBC_BXCR_BAS_ENCODE(cs2_base)|
 	      cs2_size|EBC_BXCR_BU_RW|EBC_BXCR_BW_8BIT);

 	/*-------------------------------------------------------------------------+
 	  | FPGA. Initialize bank 7 with default values.
 	  +-------------------------------------------------------------------------*/
 	mtebc(pb7ap, EBC_BXAP_BME_DISABLED|EBC_BXAP_TWT_ENCODE(7)|
 	      EBC_BXAP_BCE_DISABLE|
 	      EBC_BXAP_CSN_ENCODE(1)|EBC_BXAP_OEN_ENCODE(1)|
 	      EBC_BXAP_WBN_ENCODE(1)|EBC_BXAP_WBF_ENCODE(1)|
 	      EBC_BXAP_TH_ENCODE(1)|EBC_BXAP_RE_DISABLED|
 	      EBC_BXAP_BEM_WRITEONLY|
 	      EBC_BXAP_PEN_DISABLED);
 	mtebc(pb7cr, EBC_BXCR_BAS_ENCODE(0x48300000)|
 	      EBC_BXCR_BS_1MB|EBC_BXCR_BU_RW|EBC_BXCR_BW_8BIT);

 	/*--------------------------------------------------------------------
 	 * Setup the interrupt controller polarities, triggers, etc.
 	 *-------------------------------------------------------------------*/
 	mtdcr (uic0sr, 0xffffffff);	/* clear all */
 	mtdcr (uic0er, 0x00000000);	/* disable all */
 	mtdcr (uic0cr, 0x00000009);	/* SMI & UIC1 crit are critical */
 	mtdcr (uic0pr, 0xfffffe13);	/* per ref-board manual */
 	mtdcr (uic0tr, 0x01c00008);	/* per ref-board manual */
 	mtdcr (uic0vr, 0x00000001);	/* int31 highest, base=0x000 */
 	mtdcr (uic0sr, 0xffffffff);	/* clear all */

 	mtdcr (uic1sr, 0xffffffff);	/* clear all */
 	mtdcr (uic1er, 0x00000000);	/* disable all */
 	mtdcr (uic1cr, 0x00000000);	/* all non-critical */
 	mtdcr (uic1pr, 0xffffe0ff);	/* per ref-board manual */
 	mtdcr (uic1tr, 0x00ffc000);	/* per ref-board manual */
 	mtdcr (uic1vr, 0x00000001);	/* int31 highest, base=0x000 */
 	mtdcr (uic1sr, 0xffffffff);	/* clear all */

 	mtdcr (uic2sr, 0xffffffff);	/* clear all */
 	mtdcr (uic2er, 0x00000000);	/* disable all */
 	mtdcr (uic2cr, 0x00000000);	/* all non-critical */
 	mtdcr (uic2pr, 0xffffffff);	/* per ref-board manual */
 	mtdcr (uic2tr, 0x00ff8c0f);	/* per ref-board manual */
 	mtdcr (uic2vr, 0x00000001);	/* int31 highest, base=0x000 */
 	mtdcr (uic2sr, 0xffffffff);	/* clear all */

 	mtdcr (uicb0sr, 0xfc000000); /* clear all */
 	mtdcr (uicb0er, 0x00000000); /* disable all */
 	mtdcr (uicb0cr, 0x00000000); /* all non-critical */
 	mtdcr (uicb0pr, 0xfc000000); /* */
 	mtdcr (uicb0tr, 0x00000000); /* */
 	mtdcr (uicb0vr, 0x00000001); /* */
 	mfsdr (sdr_mfr, mfr);
 	mfr &= ~SDR0_MFR_ECS_MASK;
 /*	mtsdr(sdr_mfr, mfr); */
 	fpga_init();

 	return 0;
 }


 int checkboard (void)
 {
 	char *s = getenv ("serial#");

 	printf ("Board: Ocotea - AMCC PPC440GX Evaluation Board");
 	if (s != NULL) {
 		puts (", serial# ");
 		puts (s);
 	}
 	putc ('\n');

 	return (0);
 }


 phys_size_t initdram (int board_type)
 {
 	long dram_size = 0;

 #if defined(CONFIG_SPD_EEPROM)
 	dram_size = spd_sdram ();
 #else
 	dram_size = fixed_sdram ();
 #endif
 	return dram_size;
 }


 #if !defined(CONFIG_SPD_EEPROM)
 /*************************************************************************
  *  fixed sdram init -- doesn't use serial presence detect.
  *
  *  Assumes:    128 MB, non-ECC, non-registered
  *              PLB @ 133 MHz
  *
  ************************************************************************/
 long int fixed_sdram (void)
 {
 	uint reg;

 	/*--------------------------------------------------------------------
 	 * Setup some default
 	 *------------------------------------------------------------------*/
 	mtsdram (mem_uabba, 0x00000000);	/* ubba=0 (default)             */
 	mtsdram (mem_slio, 0x00000000);		/* rdre=0 wrre=0 rarw=0         */
 	mtsdram (mem_devopt, 0x00000000);	/* dll=0 ds=0 (normal)          */
 	mtsdram (mem_wddctr, 0x00000000);	/* wrcp=0 dcd=0                 */
 	mtsdram (mem_clktr, 0x40000000);	/* clkp=1 (90 deg wr) dcdt=0    */

 	/*--------------------------------------------------------------------
 	 * Setup for board-specific specific mem
 	 *------------------------------------------------------------------*/
 	/*
 	 * Following for CAS Latency = 2.5 @ 133 MHz PLB
 	 */
 	mtsdram (mem_b0cr, 0x000a4001);	/* SDBA=0x000 128MB, Mode 3, enabled */
 	mtsdram (mem_tr0, 0x410a4012);	/* WR=2  WD=1 CL=2.5 PA=3 CP=4 LD=2 */
 	/* RA=10 RD=3                       */
 	mtsdram (mem_tr1, 0x8080082f);	/* SS=T2 SL=STAGE 3 CD=1 CT=0x02f   */
 	mtsdram (mem_rtr, 0x08200000);	/* Rate 15.625 ns @ 133 MHz PLB     */
 	mtsdram (mem_cfg1, 0x00000000);	/* Self-refresh exit, disable PM    */
 	udelay (400);			/* Delay 200 usecs (min)            */

 	/*--------------------------------------------------------------------
 	 * Enable the controller, then wait for DCEN to complete
 	 *------------------------------------------------------------------*/
 	mtsdram (mem_cfg0, 0x86000000);	/* DCEN=1, PMUD=1, 64-bit           */
 	for (;;) {
 		mfsdram (mem_mcsts, reg);
 		if (reg & 0x80000000)
 			break;
 	}

 	return (128 * 1024 * 1024);	/* 128 MB                           */
 }
 #endif	/* !defined(CONFIG_SPD_EEPROM) */


 /*************************************************************************
  *  pci_pre_init
  *
  *  This routine is called just prior to registering the hose and gives
  *  the board the opportunity to check things. Returning a value of zero
  *  indicates that things are bad & PCI initialization should be aborted.
  *
  *	Different boards may wish to customize the pci controller structure
  *	(add regions, override default access routines, etc) or perform
  *	certain pre-initialization actions.
  *
  ************************************************************************/
 #if defined(CONFIG_PCI)
 int pci_pre_init(struct pci_controller * hose )
 {
 	unsigned long strap;

 	/*--------------------------------------------------------------------------+
 	 *	The ocotea board is always configured as the host & requires the
 	 *	PCI arbiter to be enabled.
 	 *--------------------------------------------------------------------------*/
 	mfsdr(sdr_sdstp1, strap);
 	if( (strap & SDR0_SDSTP1_PAE_MASK) == 0 ){
 		printf("PCI: SDR0_STRP1[%08lX] - PCI Arbiter disabled.\n",strap);
 		return 0;
 	}

 	return 1;
 }
 #endif /* defined(CONFIG_PCI) */

 /*************************************************************************
  *  pci_target_init
  *
  *	The bootstrap configuration provides default settings for the pci
  *	inbound map (PIM). But the bootstrap config choices are limited and
  *	may not be sufficient for a given board.
  *
  ************************************************************************/
 #if defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT)
 void pci_target_init(struct pci_controller * hose )
 {
 	/*--------------------------------------------------------------------------+
 	 * Disable everything
 	 *--------------------------------------------------------------------------*/
 	out32r( PCIX0_PIM0SA, 0 ); /* disable */
 	out32r( PCIX0_PIM1SA, 0 ); /* disable */
 	out32r( PCIX0_PIM2SA, 0 ); /* disable */
 	out32r( PCIX0_EROMBA, 0 ); /* disable expansion rom */

 	/*--------------------------------------------------------------------------+
 	 * Map all of SDRAM to PCI address 0x0000_0000. Note that the 440 strapping
 	 * options to not support sizes such as 128/256 MB.
 	 *--------------------------------------------------------------------------*/
 	out32r( PCIX0_PIM0LAL, CFG_SDRAM_BASE );
 	out32r( PCIX0_PIM0LAH, 0 );
 	out32r( PCIX0_PIM0SA, ~(gd->ram_size - 1) | 1 );

 	out32r( PCIX0_BAR0, 0 );

 	/*--------------------------------------------------------------------------+
 	 * Program the board's subsystem id/vendor id
 	 *--------------------------------------------------------------------------*/
 	out16r( PCIX0_SBSYSVID, CFG_PCI_SUBSYS_VENDORID );
 	out16r( PCIX0_SBSYSID, CFG_PCI_SUBSYS_DEVICEID );

 	out16r( PCIX0_CMD, in16r(PCIX0_CMD) | PCI_COMMAND_MEMORY );
 }
 #endif /* defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT) */


 /*************************************************************************
  *  is_pci_host
  *
  *	This routine is called to determine if a pci scan should be
  *	performed. With various hardware environments (especially cPCI and
  *	PPMC) it's insufficient to depend on the state of the arbiter enable
  *	bit in the strap register, or generic host/adapter assumptions.
  *
  *	Rather than hard-code a bad assumption in the general 440 code, the
  *	440 pci code requires the board to decide at runtime.
  *
  *	Return 0 for adapter mode, non-zero for host (monarch) mode.
  *
  *
  ************************************************************************/
 #if defined(CONFIG_PCI)
 int is_pci_host(struct pci_controller *hose)
 {
     /* The ocotea board is always configured as host. */
     return(1);
 }
 #endif /* defined(CONFIG_PCI) */


 void fpga_init(void)
 {
 	unsigned long group;
 	unsigned long sdr0_pfc0;
 	unsigned long sdr0_pfc1;
 	unsigned long sdr0_cust0;
 	unsigned long pvr;

 	mfsdr (sdr_pfc0, sdr0_pfc0);
 	mfsdr (sdr_pfc1, sdr0_pfc1);
 	group = SDR0_PFC1_EPS_DECODE(sdr0_pfc1);
 	pvr = get_pvr ();

 	sdr0_pfc0 = (sdr0_pfc0 & ~SDR0_PFC0_GEIE_MASK) | SDR0_PFC0_GEIE_TRE;
 	if ( ((pvr == PVR_440GX_RA) || (pvr == PVR_440GX_RB)) && ((group == 4) || (group == 5))) {
 		sdr0_pfc0 = (sdr0_pfc0 & ~SDR0_PFC0_TRE_MASK) | SDR0_PFC0_TRE_DISABLE;
 		sdr0_pfc1 = (sdr0_pfc1 & ~SDR0_PFC1_CTEMS_MASK) | SDR0_PFC1_CTEMS_EMS;
 		out8(FPGA_REG2, (in8(FPGA_REG2) & ~FPGA_REG2_EXT_INTFACE_MASK) |
 		     FPGA_REG2_EXT_INTFACE_ENABLE);
 		mtsdr (sdr_pfc0, sdr0_pfc0);
 		mtsdr (sdr_pfc1, sdr0_pfc1);
 	} else {
 		sdr0_pfc0 = (sdr0_pfc0 & ~SDR0_PFC0_TRE_MASK) | SDR0_PFC0_TRE_ENABLE;
 		switch (group)
 		{
 		case 0:
 		case 1:
 		case 2:
 			/* CPU trace A */
 			out8(FPGA_REG2, (in8(FPGA_REG2) & ~FPGA_REG2_EXT_INTFACE_MASK) |
 			     FPGA_REG2_EXT_INTFACE_ENABLE);
 			sdr0_pfc1 = (sdr0_pfc1 & ~SDR0_PFC1_CTEMS_MASK) | SDR0_PFC1_CTEMS_EMS;
 			mtsdr (sdr_pfc0, sdr0_pfc0);
 			mtsdr (sdr_pfc1, sdr0_pfc1);
 			break;
 		case 3:
 		case 4:
 		case 5:
 		case 6:
 			/* CPU trace B - Over EBMI */
 			sdr0_pfc1 = (sdr0_pfc1 & ~SDR0_PFC1_CTEMS_MASK) | SDR0_PFC1_CTEMS_CPUTRACE;
 			mtsdr (sdr_pfc0, sdr0_pfc0);
 			mtsdr (sdr_pfc1, sdr0_pfc1);
 			out8(FPGA_REG2, (in8(FPGA_REG2) & ~FPGA_REG2_EXT_INTFACE_MASK) |
 			     FPGA_REG2_EXT_INTFACE_DISABLE);
 			break;
 		}
 	}

 	/* Initialize the ethernet specific functions in the fpga */
 	mfsdr(sdr_pfc1, sdr0_pfc1);
 	mfsdr(sdr_cust0, sdr0_cust0);
 	if ( (SDR0_PFC1_EPS_DECODE(sdr0_pfc1) == 4) &&
 	    ((SDR0_CUST0_RGMII2_DECODE(sdr0_cust0) == RGMII_FER_GMII) ||
 	     (SDR0_CUST0_RGMII2_DECODE(sdr0_cust0) == RGMII_FER_TBI)))
 	{
 		if ((in8(FPGA_REG0) & FPGA_REG0_ECLS_MASK) == FPGA_REG0_ECLS_VER1)
 		{
 			out8(FPGA_REG3, (in8(FPGA_REG3) & ~FPGA_REG3_ENET_MASK1) |
 			     FPGA_REG3_ENET_GROUP7);
 		}
 		else
 		{
 			if (SDR0_CUST0_RGMII2_DECODE(sdr0_cust0) == RGMII_FER_GMII)
 			{
 				out8(FPGA_REG3, (in8(FPGA_REG3) & ~FPGA_REG3_ENET_MASK2) |
 				     FPGA_REG3_ENET_GROUP7);
 			}
 			else
 			{
 				out8(FPGA_REG3, (in8(FPGA_REG3) & ~FPGA_REG3_ENET_MASK2) |
 				     FPGA_REG3_ENET_GROUP8);
 			}
 		}
 	}
 	else
 	{
 		if ((in8(FPGA_REG0) & FPGA_REG0_ECLS_MASK) == FPGA_REG0_ECLS_VER1)
 		{
 			out8(FPGA_REG3, (in8(FPGA_REG3) & ~FPGA_REG3_ENET_MASK1) |
 			     FPGA_REG3_ENET_ENCODE1(SDR0_PFC1_EPS_DECODE(sdr0_pfc1)));
 		}
 		else
 		{
 			out8(FPGA_REG3, (in8(FPGA_REG3) & ~FPGA_REG3_ENET_MASK2) |
 			     FPGA_REG3_ENET_ENCODE2(SDR0_PFC1_EPS_DECODE(sdr0_pfc1)));
 		}
 	}
 	out8(FPGA_REG4, FPGA_REG4_GPHY_MODE10 |
 	     FPGA_REG4_GPHY_MODE100 | FPGA_REG4_GPHY_MODE1000 |
 	     FPGA_REG4_GPHY_FRC_DPLX | FPGA_REG4_CONNECT_PHYS);

 	/* reset the gigabyte phy if necessary */
 	if (SDR0_PFC1_EPS_DECODE(sdr0_pfc1) >= 3)
 	{
 		if ((in8(FPGA_REG0) & FPGA_REG0_ECLS_MASK) == FPGA_REG0_ECLS_VER1)
 		{
 			out8(FPGA_REG3, in8(FPGA_REG3) & ~FPGA_REG3_GIGABIT_RESET_DISABLE);
 			udelay(10000);
 			out8(FPGA_REG3, in8(FPGA_REG3) | FPGA_REG3_GIGABIT_RESET_DISABLE);
 		}
 		else
 		{
 			out8(FPGA_REG2, in8(FPGA_REG2) & ~FPGA_REG2_GIGABIT_RESET_DISABLE);
 			udelay(10000);
 			out8(FPGA_REG2, in8(FPGA_REG2) | FPGA_REG2_GIGABIT_RESET_DISABLE);
 		}
 	}

 	/*
 	 * new Ocotea with Rev. F (pass 3) chips has SMII PHY reset
 	 */
 	if ((in8(FPGA_REG0) & FPGA_REG0_ECLS_MASK) == FPGA_REG0_ECLS_VER2) {
 		out8(FPGA_REG2, in8(FPGA_REG2) & ~FPGA_REG2_SMII_RESET_DISABLE);
 		udelay(10000);
 		out8(FPGA_REG2, in8(FPGA_REG2) | FPGA_REG2_SMII_RESET_DISABLE);
 	}

 	/* Turn off the LED's */
 	out8(FPGA_REG3, (in8(FPGA_REG3) & ~FPGA_REG3_STAT_MASK) |
 	     FPGA_REG3_STAT_LED8_DISAB | FPGA_REG3_STAT_LED4_DISAB |
 	     FPGA_REG3_STAT_LED2_DISAB | FPGA_REG3_STAT_LED1_DISAB);

 	return;
 }

 #ifdef CONFIG_POST
 /*
  * Returns 1 if keys pressed to start the power-on long-running tests
  * Called from board_init_f().
  */
 int post_hotkeys_pressed(void)
 {

 	return (ctrlc());
 }
 #endif
	/*
	* Copyright (C) 2004 PaulReynolds@lhsolutions.com
	*
	* (C) Copyright 2005
	* Stefan Roese, DENX Software Engineering, sr@denx.de.
	*
	* 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 "ocotea.h"
	#include <asm/processor.h>
	#include <spd_sdram.h>
	#include <ppc4xx_enet.h>

	DECLARE_GLOBAL_DATA_PTR;

	#define BOOT_SMALL_FLASH 32 /* 00100000 */
	#define FLASH_ONBD_N 2 /* 00000010 */
	#define FLASH_SRAM_SEL 1 /* 00000001 */

	long int fixed_sdram (void);
	void fpga_init (void);

	int board_early_init_f (void)
	{
	unsigned long mfr;
	unsigned char fpga_base = (unsigned char ) CFG_FPGA_BASE;
	unsigned char switch_status;
	unsigned long cs0_base;
	unsigned long cs0_size;
	unsigned long cs0_twt;
	unsigned long cs2_base;
	unsigned long cs2_size;
	unsigned long cs2_twt;

	/*-------------------------------------------------------------------------+
	\| Initialize EBC CONFIG
	+-------------------------------------------------------------------------*/
	mtebc(xbcfg, EBC_CFG_LE_UNLOCK \|
	EBC_CFG_PTD_ENABLE \| EBC_CFG_RTC_64PERCLK \|
	EBC_CFG_ATC_PREVIOUS \| EBC_CFG_DTC_PREVIOUS \|
	EBC_CFG_CTC_PREVIOUS \| EBC_CFG_EMC_NONDEFAULT \|
	EBC_CFG_PME_DISABLE \| EBC_CFG_PR_32);

	/*-------------------------------------------------------------------------+
	\| FPGA. Initialize bank 7 with default values.
	+-------------------------------------------------------------------------*/
	mtebc(pb7ap, EBC_BXAP_BME_DISABLED\|EBC_BXAP_TWT_ENCODE(7)\|
	EBC_BXAP_BCE_DISABLE\|
	EBC_BXAP_CSN_ENCODE(1)\|EBC_BXAP_OEN_ENCODE(1)\|
	EBC_BXAP_WBN_ENCODE(1)\|EBC_BXAP_WBF_ENCODE(1)\|
	EBC_BXAP_TH_ENCODE(1)\|EBC_BXAP_RE_DISABLED\|
	EBC_BXAP_BEM_WRITEONLY\|
	EBC_BXAP_PEN_DISABLED);
	mtebc(pb7cr, EBC_BXCR_BAS_ENCODE(0x48300000)\|
	EBC_BXCR_BS_1MB\|EBC_BXCR_BU_RW\|EBC_BXCR_BW_8BIT);

	/* read FPGA base register FPGA_REG0 */
	switch_status = *fpga_base;

	if (switch_status & 0x40) {
	cs0_base = 0xFFE00000;
	cs0_size = EBC_BXCR_BS_2MB;
	cs0_twt = 8;
	cs2_base = 0xFF800000;
	cs2_size = EBC_BXCR_BS_4MB;
	cs2_twt = 10;
	} else {
	cs0_base = 0xFFC00000;
	cs0_size = EBC_BXCR_BS_4MB;
	cs0_twt = 10;
	cs2_base = 0xFF800000;
	cs2_size = EBC_BXCR_BS_2MB;
	cs2_twt = 8;
	}

	/*-------------------------------------------------------------------------+
	\| 1 MB FLASH / 1 MB SRAM. Initialize bank 0 with default values.
	+-------------------------------------------------------------------------*/
	mtebc(pb0ap, EBC_BXAP_BME_DISABLED\|EBC_BXAP_TWT_ENCODE(cs0_twt)\|
	EBC_BXAP_BCE_DISABLE\|
	EBC_BXAP_CSN_ENCODE(1)\|EBC_BXAP_OEN_ENCODE(1)\|
	EBC_BXAP_WBN_ENCODE(1)\|EBC_BXAP_WBF_ENCODE(1)\|
	EBC_BXAP_TH_ENCODE(1)\|EBC_BXAP_RE_DISABLED\|
	EBC_BXAP_BEM_WRITEONLY\|
	EBC_BXAP_PEN_DISABLED);
	mtebc(pb0cr, EBC_BXCR_BAS_ENCODE(cs0_base)\|
	cs0_size\|EBC_BXCR_BU_RW\|EBC_BXCR_BW_8BIT);

	/*-------------------------------------------------------------------------+
	\| 8KB NVRAM/RTC. Initialize bank 1 with default values.
	+-------------------------------------------------------------------------*/
	mtebc(pb1ap, EBC_BXAP_BME_DISABLED\|EBC_BXAP_TWT_ENCODE(10)\|
	EBC_BXAP_BCE_DISABLE\|
	EBC_BXAP_CSN_ENCODE(1)\|EBC_BXAP_OEN_ENCODE(1)\|
	EBC_BXAP_WBN_ENCODE(1)\|EBC_BXAP_WBF_ENCODE(1)\|
	EBC_BXAP_TH_ENCODE(1)\|EBC_BXAP_RE_DISABLED\|
	EBC_BXAP_BEM_WRITEONLY\|
	EBC_BXAP_PEN_DISABLED);
	mtebc(pb1cr, EBC_BXCR_BAS_ENCODE(0x48000000)\|
	EBC_BXCR_BS_1MB\|EBC_BXCR_BU_RW\|EBC_BXCR_BW_8BIT);

	/*-------------------------------------------------------------------------+
	\| 4 MB FLASH. Initialize bank 2 with default values.
	+-------------------------------------------------------------------------*/
	mtebc(pb2ap, EBC_BXAP_BME_DISABLED\|EBC_BXAP_TWT_ENCODE(cs2_twt)\|
	EBC_BXAP_BCE_DISABLE\|
	EBC_BXAP_CSN_ENCODE(1)\|EBC_BXAP_OEN_ENCODE(1)\|
	EBC_BXAP_WBN_ENCODE(1)\|EBC_BXAP_WBF_ENCODE(1)\|
	EBC_BXAP_TH_ENCODE(1)\|EBC_BXAP_RE_DISABLED\|
	EBC_BXAP_BEM_WRITEONLY\|
	EBC_BXAP_PEN_DISABLED);
	mtebc(pb2cr, EBC_BXCR_BAS_ENCODE(cs2_base)\|
	cs2_size\|EBC_BXCR_BU_RW\|EBC_BXCR_BW_8BIT);

	/*-------------------------------------------------------------------------+
	\| FPGA. Initialize bank 7 with default values.
	+-------------------------------------------------------------------------*/
	mtebc(pb7ap, EBC_BXAP_BME_DISABLED\|EBC_BXAP_TWT_ENCODE(7)\|
	EBC_BXAP_BCE_DISABLE\|
	EBC_BXAP_CSN_ENCODE(1)\|EBC_BXAP_OEN_ENCODE(1)\|
	EBC_BXAP_WBN_ENCODE(1)\|EBC_BXAP_WBF_ENCODE(1)\|
	EBC_BXAP_TH_ENCODE(1)\|EBC_BXAP_RE_DISABLED\|
	EBC_BXAP_BEM_WRITEONLY\|
	EBC_BXAP_PEN_DISABLED);
	mtebc(pb7cr, EBC_BXCR_BAS_ENCODE(0x48300000)\|
	EBC_BXCR_BS_1MB\|EBC_BXCR_BU_RW\|EBC_BXCR_BW_8BIT);

	/*--------------------------------------------------------------------
	* Setup the interrupt controller polarities, triggers, etc.
	-------------------------------------------------------------------/
	mtdcr (uic0sr, 0xffffffff); /* clear all */
	mtdcr (uic0er, 0x00000000); /* disable all */
	mtdcr (uic0cr, 0x00000009); /* SMI & UIC1 crit are critical */
	mtdcr (uic0pr, 0xfffffe13); /* per ref-board manual */
	mtdcr (uic0tr, 0x01c00008); /* per ref-board manual */
	mtdcr (uic0vr, 0x00000001); /* int31 highest, base=0x000 */
	mtdcr (uic0sr, 0xffffffff); /* clear all */

	mtdcr (uic1sr, 0xffffffff); /* clear all */
	mtdcr (uic1er, 0x00000000); /* disable all */
	mtdcr (uic1cr, 0x00000000); /* all non-critical */
	mtdcr (uic1pr, 0xffffe0ff); /* per ref-board manual */
	mtdcr (uic1tr, 0x00ffc000); /* per ref-board manual */
	mtdcr (uic1vr, 0x00000001); /* int31 highest, base=0x000 */
	mtdcr (uic1sr, 0xffffffff); /* clear all */

	mtdcr (uic2sr, 0xffffffff); /* clear all */
	mtdcr (uic2er, 0x00000000); /* disable all */
	mtdcr (uic2cr, 0x00000000); /* all non-critical */
	mtdcr (uic2pr, 0xffffffff); /* per ref-board manual */
	mtdcr (uic2tr, 0x00ff8c0f); /* per ref-board manual */
	mtdcr (uic2vr, 0x00000001); /* int31 highest, base=0x000 */
	mtdcr (uic2sr, 0xffffffff); /* clear all */

	mtdcr (uicb0sr, 0xfc000000); /* clear all */
	mtdcr (uicb0er, 0x00000000); /* disable all */
	mtdcr (uicb0cr, 0x00000000); /* all non-critical */
	mtdcr (uicb0pr, 0xfc000000); /* */
	mtdcr (uicb0tr, 0x00000000); /* */
	mtdcr (uicb0vr, 0x00000001); /* */
	mfsdr (sdr_mfr, mfr);
	mfr &= ~SDR0_MFR_ECS_MASK;
	/* mtsdr(sdr_mfr, mfr); */
	fpga_init();

	return 0;
	}


	int checkboard (void)
	{
	char *s = getenv ("serial#");

	printf ("Board: Ocotea - AMCC PPC440GX Evaluation Board");
	if (s != NULL) {
	puts (", serial# ");
	puts (s);
	}
	putc ('\n');

	return (0);
	}


	phys_size_t initdram (int board_type)
	{
	long dram_size = 0;

	#if defined(CONFIG_SPD_EEPROM)
	dram_size = spd_sdram ();
	#else
	dram_size = fixed_sdram ();
	#endif
	return dram_size;
	}


	#if !defined(CONFIG_SPD_EEPROM)
	/*************************************************************************
	* fixed sdram init -- doesn't use serial presence detect.
	*
	* Assumes: 128 MB, non-ECC, non-registered
	* PLB @ 133 MHz
	*
	************************************************************************/
	long int fixed_sdram (void)
	{
	uint reg;

	/*--------------------------------------------------------------------
	* Setup some default
	------------------------------------------------------------------/
	mtsdram (mem_uabba, 0x00000000); /* ubba=0 (default) */
	mtsdram (mem_slio, 0x00000000); /* rdre=0 wrre=0 rarw=0 */
	mtsdram (mem_devopt, 0x00000000); /* dll=0 ds=0 (normal) */
	mtsdram (mem_wddctr, 0x00000000); /* wrcp=0 dcd=0 */
	mtsdram (mem_clktr, 0x40000000); /* clkp=1 (90 deg wr) dcdt=0 */

	/*--------------------------------------------------------------------
	* Setup for board-specific specific mem
	------------------------------------------------------------------/
	/*
	* Following for CAS Latency = 2.5 @ 133 MHz PLB
	*/
	mtsdram (mem_b0cr, 0x000a4001); /* SDBA=0x000 128MB, Mode 3, enabled */
	mtsdram (mem_tr0, 0x410a4012); /* WR=2 WD=1 CL=2.5 PA=3 CP=4 LD=2 */
	/* RA=10 RD=3 */
	mtsdram (mem_tr1, 0x8080082f); /* SS=T2 SL=STAGE 3 CD=1 CT=0x02f */
	mtsdram (mem_rtr, 0x08200000); /* Rate 15.625 ns @ 133 MHz PLB */
	mtsdram (mem_cfg1, 0x00000000); /* Self-refresh exit, disable PM */
	udelay (400); /* Delay 200 usecs (min) */

	/*--------------------------------------------------------------------
	* Enable the controller, then wait for DCEN to complete
	------------------------------------------------------------------/
	mtsdram (mem_cfg0, 0x86000000); /* DCEN=1, PMUD=1, 64-bit */
	for (;;) {
	mfsdram (mem_mcsts, reg);
	if (reg & 0x80000000)
	break;
	}

	return (128 * 1024 * 1024); /* 128 MB */
	}
	#endif /* !defined(CONFIG_SPD_EEPROM) */


	/*************************************************************************
	* pci_pre_init
	*
	* This routine is called just prior to registering the hose and gives
	* the board the opportunity to check things. Returning a value of zero
	* indicates that things are bad & PCI initialization should be aborted.
	*
	* Different boards may wish to customize the pci controller structure
	* (add regions, override default access routines, etc) or perform
	* certain pre-initialization actions.
	*
	************************************************************************/
	#if defined(CONFIG_PCI)
	int pci_pre_init(struct pci_controller * hose )
	{
	unsigned long strap;

	/*--------------------------------------------------------------------------+
	* The ocotea board is always configured as the host & requires the
	* PCI arbiter to be enabled.
	--------------------------------------------------------------------------/
	mfsdr(sdr_sdstp1, strap);
	if( (strap & SDR0_SDSTP1_PAE_MASK) == 0 ){
	printf("PCI: SDR0_STRP1[%08lX] - PCI Arbiter disabled.\n",strap);
	return 0;
	}

	return 1;
	}
	#endif /* defined(CONFIG_PCI) */

	/*************************************************************************
	* pci_target_init
	*
	* The bootstrap configuration provides default settings for the pci
	* inbound map (PIM). But the bootstrap config choices are limited and
	* may not be sufficient for a given board.
	*
	************************************************************************/
	#if defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT)
	void pci_target_init(struct pci_controller * hose )
	{
	/*--------------------------------------------------------------------------+
	* Disable everything
	--------------------------------------------------------------------------/
	out32r( PCIX0_PIM0SA, 0 ); /* disable */
	out32r( PCIX0_PIM1SA, 0 ); /* disable */
	out32r( PCIX0_PIM2SA, 0 ); /* disable */
	out32r( PCIX0_EROMBA, 0 ); /* disable expansion rom */

	/*--------------------------------------------------------------------------+
	* Map all of SDRAM to PCI address 0x0000_0000. Note that the 440 strapping
	* options to not support sizes such as 128/256 MB.
	--------------------------------------------------------------------------/
	out32r( PCIX0_PIM0LAL, CFG_SDRAM_BASE );
	out32r( PCIX0_PIM0LAH, 0 );
	out32r( PCIX0_PIM0SA, ~(gd->ram_size - 1) \| 1 );

	out32r( PCIX0_BAR0, 0 );

	/*--------------------------------------------------------------------------+
	* Program the board's subsystem id/vendor id
	--------------------------------------------------------------------------/
	out16r( PCIX0_SBSYSVID, CFG_PCI_SUBSYS_VENDORID );
	out16r( PCIX0_SBSYSID, CFG_PCI_SUBSYS_DEVICEID );

	out16r( PCIX0_CMD, in16r(PCIX0_CMD) \| PCI_COMMAND_MEMORY );
	}
	#endif /* defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT) */


	/*************************************************************************
	* is_pci_host
	*
	* This routine is called to determine if a pci scan should be
	* performed. With various hardware environments (especially cPCI and
	* PPMC) it's insufficient to depend on the state of the arbiter enable
	* bit in the strap register, or generic host/adapter assumptions.
	*
	* Rather than hard-code a bad assumption in the general 440 code, the
	* 440 pci code requires the board to decide at runtime.
	*
	* Return 0 for adapter mode, non-zero for host (monarch) mode.
	*
	*
	************************************************************************/
	#if defined(CONFIG_PCI)
	int is_pci_host(struct pci_controller *hose)
	{
	/* The ocotea board is always configured as host. */
	return(1);
	}
	#endif /* defined(CONFIG_PCI) */


	void fpga_init(void)
	{
	unsigned long group;
	unsigned long sdr0_pfc0;
	unsigned long sdr0_pfc1;
	unsigned long sdr0_cust0;
	unsigned long pvr;

	mfsdr (sdr_pfc0, sdr0_pfc0);
	mfsdr (sdr_pfc1, sdr0_pfc1);
	group = SDR0_PFC1_EPS_DECODE(sdr0_pfc1);
	pvr = get_pvr ();

	sdr0_pfc0 = (sdr0_pfc0 & ~SDR0_PFC0_GEIE_MASK) \| SDR0_PFC0_GEIE_TRE;
	if ( ((pvr == PVR_440GX_RA) \|\| (pvr == PVR_440GX_RB)) && ((group == 4) \|\| (group == 5))) {
	sdr0_pfc0 = (sdr0_pfc0 & ~SDR0_PFC0_TRE_MASK) \| SDR0_PFC0_TRE_DISABLE;
	sdr0_pfc1 = (sdr0_pfc1 & ~SDR0_PFC1_CTEMS_MASK) \| SDR0_PFC1_CTEMS_EMS;
	out8(FPGA_REG2, (in8(FPGA_REG2) & ~FPGA_REG2_EXT_INTFACE_MASK) \|
	FPGA_REG2_EXT_INTFACE_ENABLE);
	mtsdr (sdr_pfc0, sdr0_pfc0);
	mtsdr (sdr_pfc1, sdr0_pfc1);
	} else {
	sdr0_pfc0 = (sdr0_pfc0 & ~SDR0_PFC0_TRE_MASK) \| SDR0_PFC0_TRE_ENABLE;
	switch (group)
	{
	case 0:
	case 1:
	case 2:
	/* CPU trace A */
	out8(FPGA_REG2, (in8(FPGA_REG2) & ~FPGA_REG2_EXT_INTFACE_MASK) \|
	FPGA_REG2_EXT_INTFACE_ENABLE);
	sdr0_pfc1 = (sdr0_pfc1 & ~SDR0_PFC1_CTEMS_MASK) \| SDR0_PFC1_CTEMS_EMS;
	mtsdr (sdr_pfc0, sdr0_pfc0);
	mtsdr (sdr_pfc1, sdr0_pfc1);
	break;
	case 3:
	case 4:
	case 5:
	case 6:
	/* CPU trace B - Over EBMI */
	sdr0_pfc1 = (sdr0_pfc1 & ~SDR0_PFC1_CTEMS_MASK) \| SDR0_PFC1_CTEMS_CPUTRACE;
	mtsdr (sdr_pfc0, sdr0_pfc0);
	mtsdr (sdr_pfc1, sdr0_pfc1);
	out8(FPGA_REG2, (in8(FPGA_REG2) & ~FPGA_REG2_EXT_INTFACE_MASK) \|
	FPGA_REG2_EXT_INTFACE_DISABLE);
	break;
	}
	}

	/* Initialize the ethernet specific functions in the fpga */
	mfsdr(sdr_pfc1, sdr0_pfc1);
	mfsdr(sdr_cust0, sdr0_cust0);
	if ( (SDR0_PFC1_EPS_DECODE(sdr0_pfc1) == 4) &&
	((SDR0_CUST0_RGMII2_DECODE(sdr0_cust0) == RGMII_FER_GMII) \|\|
	(SDR0_CUST0_RGMII2_DECODE(sdr0_cust0) == RGMII_FER_TBI)))
	{
	if ((in8(FPGA_REG0) & FPGA_REG0_ECLS_MASK) == FPGA_REG0_ECLS_VER1)
	{
	out8(FPGA_REG3, (in8(FPGA_REG3) & ~FPGA_REG3_ENET_MASK1) \|
	FPGA_REG3_ENET_GROUP7);
	}
	else
	{
	if (SDR0_CUST0_RGMII2_DECODE(sdr0_cust0) == RGMII_FER_GMII)
	{
	out8(FPGA_REG3, (in8(FPGA_REG3) & ~FPGA_REG3_ENET_MASK2) \|
	FPGA_REG3_ENET_GROUP7);
	}
	else
	{
	out8(FPGA_REG3, (in8(FPGA_REG3) & ~FPGA_REG3_ENET_MASK2) \|
	FPGA_REG3_ENET_GROUP8);
	}
	}
	}
	else
	{
	if ((in8(FPGA_REG0) & FPGA_REG0_ECLS_MASK) == FPGA_REG0_ECLS_VER1)
	{
	out8(FPGA_REG3, (in8(FPGA_REG3) & ~FPGA_REG3_ENET_MASK1) \|
	FPGA_REG3_ENET_ENCODE1(SDR0_PFC1_EPS_DECODE(sdr0_pfc1)));
	}
	else
	{
	out8(FPGA_REG3, (in8(FPGA_REG3) & ~FPGA_REG3_ENET_MASK2) \|
	FPGA_REG3_ENET_ENCODE2(SDR0_PFC1_EPS_DECODE(sdr0_pfc1)));
	}
	}
	out8(FPGA_REG4, FPGA_REG4_GPHY_MODE10 \|
	FPGA_REG4_GPHY_MODE100 \| FPGA_REG4_GPHY_MODE1000 \|
	FPGA_REG4_GPHY_FRC_DPLX \| FPGA_REG4_CONNECT_PHYS);

	/* reset the gigabyte phy if necessary */
	if (SDR0_PFC1_EPS_DECODE(sdr0_pfc1) >= 3)
	{
	if ((in8(FPGA_REG0) & FPGA_REG0_ECLS_MASK) == FPGA_REG0_ECLS_VER1)
	{
	out8(FPGA_REG3, in8(FPGA_REG3) & ~FPGA_REG3_GIGABIT_RESET_DISABLE);
	udelay(10000);
	out8(FPGA_REG3, in8(FPGA_REG3) \| FPGA_REG3_GIGABIT_RESET_DISABLE);
	}
	else
	{
	out8(FPGA_REG2, in8(FPGA_REG2) & ~FPGA_REG2_GIGABIT_RESET_DISABLE);
	udelay(10000);
	out8(FPGA_REG2, in8(FPGA_REG2) \| FPGA_REG2_GIGABIT_RESET_DISABLE);
	}
	}

	/*
	* new Ocotea with Rev. F (pass 3) chips has SMII PHY reset
	*/
	if ((in8(FPGA_REG0) & FPGA_REG0_ECLS_MASK) == FPGA_REG0_ECLS_VER2) {
	out8(FPGA_REG2, in8(FPGA_REG2) & ~FPGA_REG2_SMII_RESET_DISABLE);
	udelay(10000);
	out8(FPGA_REG2, in8(FPGA_REG2) \| FPGA_REG2_SMII_RESET_DISABLE);
	}

	/* Turn off the LED's */
	out8(FPGA_REG3, (in8(FPGA_REG3) & ~FPGA_REG3_STAT_MASK) \|
	FPGA_REG3_STAT_LED8_DISAB \| FPGA_REG3_STAT_LED4_DISAB \|
	FPGA_REG3_STAT_LED2_DISAB \| FPGA_REG3_STAT_LED1_DISAB);

	return;
	}

	#ifdef CONFIG_POST
	/*
	* Returns 1 if keys pressed to start the power-on long-running tests
	* Called from board_init_f().
	*/
	int post_hotkeys_pressed(void)
	{

	return (ctrlc());
	}
	#endif