Add PPC4xx-HCU4 and HCU5 boards: HCU5 files

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+/*
+ *(C) Copyright 2005-2007 Netstal Maschinen AG
+ *    Niklaus Giger (Niklaus.Giger at netstal.com)
+ *
+ *    This source code is free software; you can redistribute it
+ *    and/or modify it in source code form 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 <asm/processor.h>
+#include <ppc440.h>
+#include <asm/mmu.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+void sysLedSet(u32 value);
+
+extern flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
+
+#define mtcpr0(reg, data) do { mtdcr(CPR0_CFGADDR,reg); \
+				mtdcr(CPR0_CFGDATA,data); } while (0)
+#define mfcpr0(reg, data) do { mtdcr(CPR0_CFGADDR,reg); \
+				data = mfdcr(CPR0_CFGDATA); } while (0)
+
+#define SDR0_CP440			0x0180
+
+/*
+ * This function is run very early, out of flash, and before devices are
+ * initialized. It is called by lib_ppc/board.c:board_init_f by virtue
+ * of being in the init_sequence array.
+ *
+ * The SDRAM has been initialized already -- start.S:start called
+ * init.S:init_sdram early on -- but it is not yet being used for
+ * anything, not even stack. So be careful.
+ */
+
+int board_early_init_f(void)
+{
+	u32 reg;
+
+#undef BOOTSTRAP_OPTION_A_ACTIVE
+#ifdef BOOTSTRAP_OPTION_A_ACTIVE
+	/* Booting with Bootstrap Option A
+	 * First boot, with CPR0_ICFG_RLI_MASK == 0
+	 * no we setup varios boot strapping register,
+	 * then we do reset the PPC440 using a chip reset
+	 * Unfortunately, we cannot use this option, as Nto1 is not set
+	 * with Bootstrap Option A and cannot be changed later on by SW
+	 * There are no other possible boostrap options with a 8 bit ROM
+	 * See Errata (Version 1.04) CHIP_9
+	 */
+
+	u32 cpr0icfg;
+	u32 dbcr;
+	mfcpr0(CPR0_ICFG, cpr0icfg);
+	if ( ! (cpr0icfg & CPR0_ICFG_RLI_MASK ) ) {
+		mtcpr0(CPR0_MALD,   0x02000000);
+		mtcpr0(CPR0_OPBD,   0x02000000);
+	        mtcpr0(CPR0_PERD,   0x05000000);  /* 1:5 */
+		mtcpr0(CPR0_PLLC,   0x40000238);
+		mtcpr0(CPR0_PLLD,   0x01010414);
+		mtcpr0(CPR0_PRIMAD, 0x01000000);
+		mtcpr0(CPR0_PRIMBD, 0x01000000);
+		mtcpr0(CPR0_SPCID,  0x03000000);
+		mtsdr(SDR0_PFC0,    0x00003E00);  /* [CTE] = 0 */
+		mtsdr(SDR0_CP440,   0x0EAAEA02);  /* [Nto1] = 1*/
+		mtcpr0(CPR0_ICFG,   cpr0icfg | CPR0_ICFG_RLI_MASK);
+
+		/*
+		 * Initiate system reset in debug control register DBCR
+		 */
+		dbcr = mfspr(dbcr0);
+		#define SYSTEM_RESET 0x30000000
+		#define CHIP_RESET   0x20000000
+		mtspr(dbcr0, dbcr | CHIP_RESET );
+	}
+	mtsdr(SDR0_CP440, 0x0EAAEA02);  /* [Nto1] = 1*/
+#endif
+	mtdcr(ebccfga, xbcfg);
+	mtdcr(ebccfgd, 0xb8400000);
+
+	/*--------------------------------------------------------------------
+	 * Setup the GPIO pins
+	 *-------------------------------------------------------------------*/
+	/* test-only: take GPIO init from pcs440ep ???? in config file */
+	out32(GPIO0_OR, 0x00000000);
+	out32(GPIO0_TCR, 0x7C2FF1CF);
+	out32(GPIO0_OSRL, 0x40055000);
+	out32(GPIO0_OSRH, 0x00000000);
+	out32(GPIO0_TSRL, 0x40055000);
+	out32(GPIO0_TSRH, 0x00000400);
+	out32(GPIO0_ISR1L, 0x40000000);
+	out32(GPIO0_ISR1H, 0x00000000);
+	out32(GPIO0_ISR2L, 0x00000000);
+	out32(GPIO0_ISR2H, 0x00000000);
+	out32(GPIO0_ISR3L, 0x00000000);
+	out32(GPIO0_ISR3H, 0x00000000);
+
+	out32(GPIO1_OR, 0x00000000);
+	out32(GPIO1_TCR, 0xC6007FFF);
+	out32(GPIO1_OSRL, 0x00140000);
+	out32(GPIO1_OSRH, 0x00000000);
+	out32(GPIO1_TSRL, 0x00000000);
+	out32(GPIO1_TSRH, 0x00000000);
+	out32(GPIO1_ISR1L, 0x05415555);
+	out32(GPIO1_ISR1H, 0x40000000);
+	out32(GPIO1_ISR2L, 0x00000000);
+	out32(GPIO1_ISR2H, 0x00000000);
+	out32(GPIO1_ISR3L, 0x00000000);
+	out32(GPIO1_ISR3H, 0x00000000);
+
+	/*--------------------------------------------------------------------
+	 * Setup the interrupt controller polarities, triggers, etc.
+	 *-------------------------------------------------------------------*/
+	mtdcr(uic0sr, 0xffffffff);	/* clear all */
+	mtdcr(uic0er, 0x00000000);	/* disable all */
+	mtdcr(uic0cr, 0x00000005);	/* ATI & UIC1 crit are critical */
+	mtdcr(uic0pr, 0xfffff7ff);	/* per ref-board manual */
+	mtdcr(uic0tr, 0x00000000);	/* per ref-board manual */
+	mtdcr(uic0vr, 0x00000000);	/* 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, 0xffffffff);	/* per ref-board manual */
+	mtdcr(uic1tr, 0x00000000);	/* per ref-board manual */
+	mtdcr(uic1vr, 0x00000000);	/* 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, 0x00000000);	/* per ref-board manual */
+	mtdcr(uic2vr, 0x00000000);	/* int31 highest, base=0x000 */
+	mtdcr(uic2sr, 0xffffffff);	/* clear all */
+	mtsdr(sdr_pfc0, 0x00003E00);	/* Pin function:  */
+	mtsdr(sdr_pfc1, 0x00848000);	/* Pin function: UART0 has 4 pins */
+
+	/* PCI arbiter enabled */
+	mfsdr(sdr_pci0, reg);
+	mtsdr(sdr_pci0, 0x80000000 | reg);
+
+	pci_pre_init(0);
+
+	/* setup BOOT FLASH */
+	mtsdr(SDR0_CUST0, 0xC0082350);
+
+	return 0;
+}
+
+#ifdef CONFIG_BOARD_PRE_INIT
+int board_pre_init (void)
+{
+	return board_early_init_f ();
+}
+
+#endif
+
+enum {
+	/* HW_GENERATION_HCU1 is no longer supported */
+	HW_GENERATION_HCU2  = 0x10,
+	HW_GENERATION_HCU3  = 0x10,
+	HW_GENERATION_HCU4  = 0x20,
+	HW_GENERATION_HCU5  = 0x30,
+	HW_GENERATION_MCU   = 0x08,
+	HW_GENERATION_MCU20 = 0x0a,
+	HW_GENERATION_MCU25 = 0x09,
+};
+
+int checkboard (void)
+{
+#define SDR0_ECID0			0x0080
+#define SDR0_ECID1			0x0081
+#define SDR0_ECID2			0x0082
+#define SDR0_ECID3			0x0083
+	unsigned j;
+	uint16_t *hwVersReg    = (uint16_t *) HCU_HW_VERSION_REGISTER;
+	uint16_t *boardVersReg = (uint16_t *) HCU_CPLD_VERSION_REGISTER;
+	uint16_t generation = *boardVersReg & 0xf0;
+	uint16_t index      = *boardVersReg & 0x0f;
+	ulong ecid0, ecid1, ecid2, ecid3;
+	printf ("Netstal Maschinen AG: ");
+	if (generation == HW_GENERATION_HCU3)
+		printf ("HCU3: index %d", index);
+	else if (generation == HW_GENERATION_HCU4)
+		printf ("HCU4: index %d", index);
+	else if (generation == HW_GENERATION_HCU5)
+		printf ("HCU5: index %d", index);
+	printf (" HW 0x%02x\n", *hwVersReg & 0xff);
+	mfsdr(SDR0_ECID0, ecid0);
+	mfsdr(SDR0_ECID1, ecid1);
+	mfsdr(SDR0_ECID2, ecid2);
+	mfsdr(SDR0_ECID3, ecid3);
+
+	printf("Chip ID 0x%x 0x%x 0x%x 0x%x\n",  ecid0,  ecid1, ecid2, ecid3);
+	for (j=0; j < 6;j++) {
+		sysLedSet(1 << j);
+		udelay(200*1000);
+	}
+	return 0;
+}
+
+#define SYS_IO_ADDRESS 0xcce00000
+
+u32 sysLedGet(void)
+{
+	return in16(SYS_IO_ADDRESS) & 0x3f;
+}
+
+void sysLedSet(u32 value /* value to place in LEDs */)
+{
+	out16(SYS_IO_ADDRESS, value);
+}
+
+/*---------------------------------------------------------------------------+
+ * getSerialNr
+ *---------------------------------------------------------------------------*/
+static u32 getSerialNr(void)
+{
+	u32 *serial = (u32 *)CFG_FLASH_BASE;
+	if (*serial == 0xffffffff) {
+		return get_ticks();
+	}
+	return *serial;
+}
+
+
+/*---------------------------------------------------------------------------+
+ * misc_init_r.
+ *---------------------------------------------------------------------------*/
+
+#define DEFAULT_ETH_ADDR  "ethaddr"
+/* ethaddr  for first or etha1ddr  for second ethernet */
+
+int misc_init_r(void)
+{
+	char *s = getenv(DEFAULT_ETH_ADDR);
+	char *e;
+	int i;
+	u32 serial =  getSerialNr();
+	unsigned long usb2d0cr = 0;
+	unsigned long usb2phy0cr, usb2h0cr = 0;
+	unsigned long sdr0_pfc1;
+
+	for (i = 0; i < 6; ++i) {
+		gd->bd->bi_enetaddr[i] = s ? simple_strtoul (s, &e, 16) : 0;
+		if (s)
+			s = (*e) ? e + 1 : e;
+	}
+	if (gd->bd->bi_enetaddr[3] == 0 &&
+	    gd->bd->bi_enetaddr[4] == 0 &&
+	    gd->bd->bi_enetaddr[5] == 0) {
+		char ethaddr[22];
+		/* Must be in sync with CONFIG_ETHADDR */
+		gd->bd->bi_enetaddr[0] = 0x00;
+		gd->bd->bi_enetaddr[1] = 0x60;
+		gd->bd->bi_enetaddr[2] = 0x13;
+		gd->bd->bi_enetaddr[3] = (serial          >> 16) & 0xff;
+		gd->bd->bi_enetaddr[4] = (serial          >>  8) & 0xff;
+		/* byte[5].bit 0 must be zero */
+		gd->bd->bi_enetaddr[5] = (serial          >>  0) & 0xfe;
+		sprintf (ethaddr, "%02X:%02X:%02X:%02X:%02X:%02X\0",
+			 gd->bd->bi_enetaddr[0], gd->bd->bi_enetaddr[1],
+			 gd->bd->bi_enetaddr[2], gd->bd->bi_enetaddr[3],
+			 gd->bd->bi_enetaddr[4], gd->bd->bi_enetaddr[5]) ;
+		printf("%s: Setting eth %s serial 0x%x\n",  __FUNCTION__,
+		       ethaddr, serial);
+		setenv (DEFAULT_ETH_ADDR, ethaddr);
+	}
+#ifdef CFG_ENV_IS_IN_FLASH
+	/* Monitor protection ON by default */
+	(void)flash_protect(FLAG_PROTECT_SET,
+			    -CFG_MONITOR_LEN,
+			    0xffffffff,
+			    &flash_info[0]);
+
+	/* Env protection ON by default */
+	(void)flash_protect(FLAG_PROTECT_SET,
+			    CFG_ENV_ADDR_REDUND,
+			    CFG_ENV_ADDR_REDUND + 2*CFG_ENV_SECT_SIZE - 1,
+			    &flash_info[0]);
+#endif
+
+	/*
+	 * USB stuff...
+	 */
+
+	/* SDR Setting */
+	mfsdr(SDR0_PFC1, sdr0_pfc1);
+	mfsdr(SDR0_USB2D0CR, usb2d0cr);
+	mfsdr(SDR0_USB2PHY0CR, usb2phy0cr);
+	mfsdr(SDR0_USB2H0CR, usb2h0cr);
+
+	usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_XOCLK_MASK;
+	usb2phy0cr = usb2phy0cr | SDR0_USB2PHY0CR_XOCLK_EXTERNAL;	/*0*/
+	usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_WDINT_MASK;
+	usb2phy0cr = usb2phy0cr | SDR0_USB2PHY0CR_WDINT_16BIT_30MHZ;	/*1*/
+	usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_DVBUS_MASK;
+	usb2phy0cr = usb2phy0cr | SDR0_USB2PHY0CR_DVBUS_PURDIS;		/*0*/
+	usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_DWNSTR_MASK;
+	usb2phy0cr = usb2phy0cr | SDR0_USB2PHY0CR_DWNSTR_HOST;		/*1*/
+	usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_UTMICN_MASK;
+	usb2phy0cr = usb2phy0cr | SDR0_USB2PHY0CR_UTMICN_HOST;		/*1*/
+
+	/* An 8-bit/60MHz interface is the only possible alternative
+	   when connecting the Device to the PHY */
+	usb2h0cr   = usb2h0cr &~SDR0_USB2H0CR_WDINT_MASK;
+	usb2h0cr   = usb2h0cr | SDR0_USB2H0CR_WDINT_16BIT_30MHZ;	/*1*/
+
+	/* To enable the USB 2.0 Device function through the UTMI interface */
+	usb2d0cr = usb2d0cr &~SDR0_USB2D0CR_USB2DEV_EBC_SEL_MASK;
+	usb2d0cr = usb2d0cr | SDR0_USB2D0CR_USB2DEV_SELECTION;		/*1*/
+
+	sdr0_pfc1 = sdr0_pfc1 &~SDR0_PFC1_UES_MASK;
+	sdr0_pfc1 = sdr0_pfc1 | SDR0_PFC1_UES_USB2D_SEL;		/*0*/
+
+	mtsdr(SDR0_PFC1, sdr0_pfc1);
+	mtsdr(SDR0_USB2D0CR, usb2d0cr);
+	mtsdr(SDR0_USB2PHY0CR, usb2phy0cr);
+	mtsdr(SDR0_USB2H0CR, usb2h0cr);
+
+	/*clear resets*/
+	udelay (1000);
+	mtsdr(SDR0_SRST1, 0x00000000);
+	udelay (1000);
+	mtsdr(SDR0_SRST0, 0x00000000);
+
+	printf("USB:   Host(int phy) Device(ext phy)\n");
+
+	return 0;
+}
+
+/*************************************************************************
+ *  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) && defined(CFG_PCI_PRE_INIT)
+int pci_pre_init(struct pci_controller *hose)
+{
+	unsigned long addr;
+
+	/*-------------------------------------------------------------------+
+	 * As of errata version 0.4, CHIP_8: Incorrect Write to DDR SDRAM.
+	 * Workaround: Disable write pipelining to DDR SDRAM by setting
+	 * PLB0_ACR[WRP] = 0.
+	 *-------------------------------------------------------------------*/
+
+	/*-------------------------------------------------------------------+
+	  | Set priority for all PLB3 devices to 0.
+	  | Set PLB3 arbiter to fair mode.
+	  +-------------------------------------------------------------------*/
+	mfsdr(sdr_amp1, addr);
+	mtsdr(sdr_amp1, (addr & 0x000000FF) | 0x0000FF00);
+	addr = mfdcr(plb3_acr);
+	// mtdcr(plb3_acr, addr & ~plb1_acr_wrp_mask);  /* ngngng */
+	mtdcr(plb3_acr, addr | 0x80000000); /* Sequoia */
+
+	/*-------------------------------------------------------------------+
+	  | Set priority for all PLB4 devices to 0.
+	  +-------------------------------------------------------------------*/
+	mfsdr(sdr_amp0, addr);
+	mtsdr(sdr_amp0, (addr & 0x000000FF) | 0x0000FF00);
+	addr = mfdcr(plb4_acr) | 0xa0000000;	/* Was 0x8---- */
+//	mtdcr(plb4_acr, addr & ~plb1_acr_wrp_mask);  /* ngngng */
+	mtdcr(plb4_acr, addr);  /* Sequoia */
+
+	/*-------------------------------------------------------------------+
+	  | Set Nebula PLB4 arbiter to fair mode.
+	  +-------------------------------------------------------------------*/
+	/* Segment0 */
+	addr = (mfdcr(plb0_acr) & ~plb0_acr_ppm_mask) | plb0_acr_ppm_fair;
+	addr = (addr & ~plb0_acr_hbu_mask) | plb0_acr_hbu_enabled;
+	addr = (addr & ~plb0_acr_rdp_mask) | plb0_acr_rdp_4deep;
+//	addr = (addr & ~plb0_acr_wrp_mask) ;  /* ngngng */
+	addr = (addr & ~plb0_acr_wrp_mask) | plb0_acr_wrp_2deep; /* Sequoia */
+
+	// mtdcr(plb0_acr, addr); /* Sequoia */
+	mtdcr(plb0_acr, 0);  // PATCH HAB: WRITE PIPELINING OFF
+
+
+	/* Segment1 */
+	addr = (mfdcr(plb1_acr) & ~plb1_acr_ppm_mask) | plb1_acr_ppm_fair;
+	addr = (addr & ~plb1_acr_hbu_mask) | plb1_acr_hbu_enabled;
+	addr = (addr & ~plb1_acr_rdp_mask) | plb1_acr_rdp_4deep;
+	addr = (addr & ~plb1_acr_wrp_mask) ;
+	// mtdcr(plb1_acr, addr); /* Sequoia */
+	mtdcr(plb1_acr, 0);  // PATCH HAB: WRITE PIPELINING OFF
+
+	return 1;
+}
+#endif	/* defined(CONFIG_PCI) && defined(CFG_PCI_PRE_INIT) */
+
+/*************************************************************************
+ *  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)
+{
+	/*-------------------------------------------------------------+
+	 * Set up Direct MMIO registers
+	 *-------------------------------------------------------------*/
+	/*-------------------------------------------------------------+
+	  | PowerPC440EPX PCI Master configuration.
+	  | Map one 1Gig range of PLB/processor addresses to PCI memory space.
+	  |   PLB address 0xA0000000-0xDFFFFFFF ==> PCI address
+	  |		  0xA0000000-0xDFFFFFFF
+	  |   Use byte reversed out routines to handle endianess.
+	  | Make this region non-prefetchable.
+	  +-------------------------------------------------------------*/
+	/* PMM0 Mask/Attribute - disabled b4 setting */
+	out32r(PCIX0_PMM0MA, 0x00000000);
+	out32r(PCIX0_PMM0LA, CFG_PCI_MEMBASE);	/* PMM0 Local Address */
+	/* PMM0 PCI Low Address */
+	out32r(PCIX0_PMM0PCILA, CFG_PCI_MEMBASE);
+	out32r(PCIX0_PMM0PCIHA, 0x00000000);	/* PMM0 PCI High Address */
+	/* 512M + No prefetching, and enable region */
+	out32r(PCIX0_PMM0MA, 0xE0000001);
+
+	/* PMM0 Mask/Attribute - disabled b4 setting */
+	out32r(PCIX0_PMM1MA, 0x00000000);
+	out32r(PCIX0_PMM1LA, CFG_PCI_MEMBASE2);	/* PMM0 Local Address */
+	/* PMM0 PCI Low Address */
+	out32r(PCIX0_PMM1PCILA, CFG_PCI_MEMBASE2);
+	out32r(PCIX0_PMM1PCIHA, 0x00000000);	/* PMM0 PCI High Address */
+	/* 512M + No prefetching, and enable region */
+	out32r(PCIX0_PMM1MA, 0xE0000001);
+
+	out32r(PCIX0_PTM1MS, 0x00000001);	/* Memory Size/Attribute */
+	out32r(PCIX0_PTM1LA, 0);	/* Local Addr. Reg */
+	out32r(PCIX0_PTM2MS, 0);	/* Memory Size/Attribute */
+	out32r(PCIX0_PTM2LA, 0);	/* Local Addr. Reg */
+
+	/*------------------------------------------------------------------+
+	 * Set up Configuration registers
+	 *------------------------------------------------------------------*/
+
+	/* Program the board's subsystem id/vendor id */
+	pci_write_config_word(0, PCI_SUBSYSTEM_VENDOR_ID,
+			      CFG_PCI_SUBSYS_VENDORID);
+	pci_write_config_word(0, PCI_SUBSYSTEM_ID, CFG_PCI_SUBSYS_ID);
+
+	/* Configure command register as bus master */
+	pci_write_config_word(0, PCI_COMMAND, PCI_COMMAND_MASTER);
+
+	/* 240nS PCI clock */
+	pci_write_config_word(0, PCI_LATENCY_TIMER, 1);
+
+	/* No error reporting */
+	pci_write_config_word(0, PCI_ERREN, 0);
+
+	pci_write_config_dword(0, PCI_BRDGOPT2, 0x00000101);
+
+}
+#endif	/* defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT) */
+
+/*************************************************************************
+ *  pci_master_init
+ *
+ ************************************************************************/
+#if defined(CONFIG_PCI) && defined(CFG_PCI_MASTER_INIT)
+void pci_master_init(struct pci_controller *hose)
+{
+	unsigned short temp_short;
+
+	/*---------------------------------------------------------------+
+	  | Write the PowerPC440 EP PCI Configuration regs.
+	  |   Enable PowerPC440 EP to be a master on the PCI bus (PMM).
+	  |   Enable PowerPC440 EP to act as a PCI memory target (PTM).
+	  +--------------------------------------------------------------*/
+	pci_read_config_word(0, PCI_COMMAND, &temp_short);
+	pci_write_config_word(0, PCI_COMMAND,
+			      temp_short | PCI_COMMAND_MASTER |
+			      PCI_COMMAND_MEMORY);
+}
+#endif
+/* defined(CONFIG_PCI) && defined(CFG_PCI_MASTER_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)
+{
+	return 1;
+}
+#endif				/* defined(CONFIG_PCI) */
+

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