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

 /*
  * (C) Copyright 2006-2007
  * Stefan Roese, DENX Software Engineering, sr@denx.de.
  *
  * (C) Copyright 2006
  * Jacqueline Pira-Ferriol, AMCC/IBM, jpira-ferriol@fr.ibm.com
  * Alain Saurel,	    AMCC/IBM, alain.saurel@fr.ibm.com
  *
  * 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 <libfdt.h>
 #include <fdt_support.h>
 #include <ppc4xx.h>
 #include <asm/gpio.h>
 #include <asm/processor.h>
 #include <asm/io.h>
 #include <asm/bitops.h>

 DECLARE_GLOBAL_DATA_PTR;

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

 ulong flash_get_size (ulong base, int banknum);

 int board_early_init_f(void)
 {
 	u32 sdr0_cust0;
 	u32 sdr0_pfc1, sdr0_pfc2;
 	u32 reg;

 	mtdcr(ebccfga, xbcfg);
 	mtdcr(ebccfgd, 0xb8400000);

 	/*
 	 * 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 */

 	/* 50MHz tmrclk */
 	out_8((u8 *) CFG_BCSR_BASE + 0x04, 0x00);

 	/* clear write protects */
 	out_8((u8 *) CFG_BCSR_BASE + 0x07, 0x00);

 	/* enable Ethernet */
 	out_8((u8 *) CFG_BCSR_BASE + 0x08, 0x00);

 	/* enable USB device */
 	out_8((u8 *) CFG_BCSR_BASE + 0x09, 0x20);

 	/* select Ethernet (and optionally IIC1) pins */
 	mfsdr(SDR0_PFC1, sdr0_pfc1);
 	sdr0_pfc1 = (sdr0_pfc1 & ~SDR0_PFC1_SELECT_MASK) |
 		SDR0_PFC1_SELECT_CONFIG_4;
 #ifdef CONFIG_I2C_MULTI_BUS
 	sdr0_pfc1 |= ((sdr0_pfc1 & ~SDR0_PFC1_SIS_MASK) | SDR0_PFC1_SIS_IIC1_SEL);
 #endif
 	mfsdr(SDR0_PFC2, sdr0_pfc2);
 	sdr0_pfc2 = (sdr0_pfc2 & ~SDR0_PFC2_SELECT_MASK) |
 		SDR0_PFC2_SELECT_CONFIG_4;
 	mtsdr(SDR0_PFC2, sdr0_pfc2);
 	mtsdr(SDR0_PFC1, sdr0_pfc1);

 	/* PCI arbiter enabled */
 	mfsdr(sdr_pci0, reg);
 	mtsdr(sdr_pci0, 0x80000000 | reg);

 	/* setup NAND FLASH */
 	mfsdr(SDR0_CUST0, sdr0_cust0);
 	sdr0_cust0 = SDR0_CUST0_MUX_NDFC_SEL	|
 		SDR0_CUST0_NDFC_ENABLE		|
 		SDR0_CUST0_NDFC_BW_8_BIT	|
 		SDR0_CUST0_NDFC_ARE_MASK	|
 		(0x80000000 >> (28 + CFG_NAND_CS));
 	mtsdr(SDR0_CUST0, sdr0_cust0);

 	return 0;
 }

 int misc_init_r(void)
 {
 	uint pbcr;
 	int size_val = 0;
 	u32 reg;
 #ifdef CONFIG_440EPX
 	unsigned long usb2d0cr = 0;
 	unsigned long usb2phy0cr, usb2h0cr = 0;
 	unsigned long sdr0_pfc1;
 	char *act = getenv("usbact");
 #endif

 	/* Re-do flash sizing to get full correct info */

 	/* adjust flash start and offset */
 	gd->bd->bi_flashstart = 0 - gd->bd->bi_flashsize;
 	gd->bd->bi_flashoffset = 0;

 #if defined(CONFIG_NAND_U_BOOT) || defined(CONFIG_NAND_SPL)
 	mtdcr(ebccfga, pb3cr);
 #else
 	mtdcr(ebccfga, pb0cr);
 #endif
 	pbcr = mfdcr(ebccfgd);
 	size_val = ffs(gd->bd->bi_flashsize) - 21;
 	pbcr = (pbcr & 0x0001ffff) | gd->bd->bi_flashstart | (size_val << 17);
 #if defined(CONFIG_NAND_U_BOOT) || defined(CONFIG_NAND_SPL)
 	mtdcr(ebccfga, pb3cr);
 #else
 	mtdcr(ebccfga, pb0cr);
 #endif
 	mtdcr(ebccfgd, pbcr);

 	/*
 	 * Re-check to get correct base address
 	 */
 	flash_get_size(gd->bd->bi_flashstart, 0);

 #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 suff...
 	 */
 #ifdef CONFIG_440EPX
 	if (act == NULL || strcmp(act, "hostdev") == 0) {
 		/* 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;
 		usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_WDINT_MASK;
 		usb2phy0cr = usb2phy0cr | SDR0_USB2PHY0CR_WDINT_16BIT_30MHZ;
 		usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_DVBUS_MASK;
 		usb2phy0cr = usb2phy0cr | SDR0_USB2PHY0CR_DVBUS_PURDIS;
 		usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_DWNSTR_MASK;
 		usb2phy0cr = usb2phy0cr | SDR0_USB2PHY0CR_DWNSTR_HOST;
 		usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_UTMICN_MASK;
 		usb2phy0cr = usb2phy0cr | SDR0_USB2PHY0CR_UTMICN_HOST;

 		/*
 		 * 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;

 		/*
 		 * 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;

 		sdr0_pfc1 = sdr0_pfc1 &~SDR0_PFC1_UES_MASK;
 		sdr0_pfc1 = sdr0_pfc1 | SDR0_PFC1_UES_USB2D_SEL;

 		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");

 	} else if (strcmp(act, "dev") == 0) {
 		/*-------------------PATCH-------------------------------*/
 		mfsdr(SDR0_USB2PHY0CR, usb2phy0cr);

 		usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_XOCLK_MASK;
 		usb2phy0cr = usb2phy0cr | SDR0_USB2PHY0CR_XOCLK_EXTERNAL;
 		usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_DVBUS_MASK;
 		usb2phy0cr = usb2phy0cr | SDR0_USB2PHY0CR_DVBUS_PURDIS;
 		usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_DWNSTR_MASK;
 		usb2phy0cr = usb2phy0cr | SDR0_USB2PHY0CR_DWNSTR_HOST;
 		usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_UTMICN_MASK;
 		usb2phy0cr = usb2phy0cr | SDR0_USB2PHY0CR_UTMICN_HOST;
 		mtsdr(SDR0_USB2PHY0CR, usb2phy0cr);

 		udelay (1000);
 		mtsdr(SDR0_SRST1, 0x672c6000);

 		udelay (1000);
 		mtsdr(SDR0_SRST0, 0x00000080);

 		udelay (1000);
 		mtsdr(SDR0_SRST1, 0x60206000);

 		*(unsigned int *)(0xe0000350) = 0x00000001;

 		udelay (1000);
 		mtsdr(SDR0_SRST1, 0x60306000);
 		/*-------------------PATCH-------------------------------*/

 		/* SDR Setting */
 		mfsdr(SDR0_USB2PHY0CR, usb2phy0cr);
 		mfsdr(SDR0_USB2H0CR, usb2h0cr);
 		mfsdr(SDR0_USB2D0CR, usb2d0cr);
 		mfsdr(SDR0_PFC1, sdr0_pfc1);

 		usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_XOCLK_MASK;
 		usb2phy0cr = usb2phy0cr | SDR0_USB2PHY0CR_XOCLK_EXTERNAL;
 		usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_WDINT_MASK;
 		usb2phy0cr = usb2phy0cr | SDR0_USB2PHY0CR_WDINT_8BIT_60MHZ;
 		usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_DVBUS_MASK;
 		usb2phy0cr = usb2phy0cr | SDR0_USB2PHY0CR_DVBUS_PUREN;
 		usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_DWNSTR_MASK;
 		usb2phy0cr = usb2phy0cr | SDR0_USB2PHY0CR_DWNSTR_DEV;
 		usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_UTMICN_MASK;
 		usb2phy0cr = usb2phy0cr | SDR0_USB2PHY0CR_UTMICN_DEV;

 		usb2h0cr   = usb2h0cr &~SDR0_USB2H0CR_WDINT_MASK;
 		usb2h0cr   = usb2h0cr | SDR0_USB2H0CR_WDINT_8BIT_60MHZ;

 		usb2d0cr = usb2d0cr &~SDR0_USB2D0CR_USB2DEV_EBC_SEL_MASK;
 		usb2d0cr = usb2d0cr | SDR0_USB2D0CR_EBC_SELECTION;

 		sdr0_pfc1 = sdr0_pfc1 &~SDR0_PFC1_UES_MASK;
 		sdr0_pfc1 = sdr0_pfc1 | SDR0_PFC1_UES_EBCHR_SEL;

 		mtsdr(SDR0_USB2H0CR, usb2h0cr);
 		mtsdr(SDR0_USB2PHY0CR, usb2phy0cr);
 		mtsdr(SDR0_USB2D0CR, usb2d0cr);
 		mtsdr(SDR0_PFC1, sdr0_pfc1);

 		/* clear resets */
 		udelay (1000);
 		mtsdr(SDR0_SRST1, 0x00000000);
 		udelay (1000);
 		mtsdr(SDR0_SRST0, 0x00000000);

 		printf("USB:   Device(int phy)\n");
 	}
 #endif /* CONFIG_440EPX */

 	mfsdr(SDR0_SRST1, reg);		/* enable security/kasumi engines */
 	reg &= ~(SDR0_SRST1_CRYP0 | SDR0_SRST1_KASU0);
 	mtsdr(SDR0_SRST1, reg);

 	/*
 	 * Clear PLB4A0_ACR[WRP]
 	 * This fix will make the MAL burst disabling patch for the Linux
 	 * EMAC driver obsolete.
 	 */
 	reg = mfdcr(plb4_acr) & ~PLB4_ACR_WRP;
 	mtdcr(plb4_acr, reg);

 	return 0;
 }

 int checkboard(void)
 {
 	char *s = getenv("serial#");
 	u8 rev;
 	u8 val;

 #ifdef CONFIG_440EPX
 	printf("Board: Sequoia - AMCC PPC440EPx Evaluation Board");
 #else
 	printf("Board: Rainier - AMCC PPC440GRx Evaluation Board");
 #endif

 	rev = in_8((void *)(CFG_BCSR_BASE + 0));
 	val = in_8((void *)(CFG_BCSR_BASE + 5)) & CFG_BCSR5_PCI66EN;
 	printf(", Rev. %X, PCI=%d MHz", rev, val ? 66 : 33);

 	if (s != NULL) {
 		puts(", serial# ");
 		puts(s);
 	}
 	putc('\n');

 	return (0);
 }

 #if defined(CONFIG_PCI) && defined(CONFIG_PCI_PNP)
 /*
  * Assign interrupts to PCI devices.
  */
 void sequoia_pci_fixup_irq(struct pci_controller *hose, pci_dev_t dev)
 {
 	pci_hose_write_config_byte(hose, dev, PCI_INTERRUPT_LINE, VECNUM_EIRQ2);
 }
 #endif

 /*
  * 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 addr;

 	/*
 	 * 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 | 0x80000000);

 	/*
 	 * 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);

 	/*
 	 * 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) | plb0_acr_wrp_2deep;
 	mtdcr(plb0_acr, addr);

 	/* 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) | plb1_acr_wrp_2deep;
 	mtdcr(plb1_acr, addr);

 #ifdef CONFIG_PCI_PNP
 	hose->fixup_irq = sequoia_pci_fixup_irq;
 #endif
 	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)
 {
 	/*
 	 * 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.
 	 */
 	out32r(PCIX0_PMM0MA, 0x00000000);	/* PMM0 Mask/Attribute */
 						/* - disabled b4 setting */
 	out32r(PCIX0_PMM0LA, CFG_PCI_MEMBASE);	/* PMM0 Local Address */
 	out32r(PCIX0_PMM0PCILA, CFG_PCI_MEMBASE); /* PMM0 PCI Low Address */
 	out32r(PCIX0_PMM0PCIHA, 0x00000000);	/* PMM0 PCI High Address */
 	out32r(PCIX0_PMM0MA, 0xE0000001);	/* 512M + No prefetching, */
 						/* and enable region */

 	out32r(PCIX0_PMM1MA, 0x00000000);	/* PMM0 Mask/Attribute */
 						/* - disabled b4 setting */
 	out32r(PCIX0_PMM1LA, CFG_PCI_MEMBASE2); /* PMM0 Local Address */
 	out32r(PCIX0_PMM1PCILA, CFG_PCI_MEMBASE2); /* PMM0 PCI Low Address */
 	out32r(PCIX0_PMM1PCIHA, 0x00000000);	/* PMM0 PCI High Address */
 	out32r(PCIX0_PMM1MA, 0xE0000001);	/* 512M + No prefetching, */
 						/* and enable region */

 	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) */

 #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)
 {
 	/* Cactus is always configured as host. */
 	return (1);
 }
 #endif /* defined(CONFIG_PCI) */

 #if defined(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 0;	/* No hotkeys supported */
 }
 #endif /* CONFIG_POST */
	/*
	* (C) Copyright 2006-2007
	* Stefan Roese, DENX Software Engineering, sr@denx.de.
	*
	* (C) Copyright 2006
	* Jacqueline Pira-Ferriol, AMCC/IBM, jpira-ferriol@fr.ibm.com
	* Alain Saurel, AMCC/IBM, alain.saurel@fr.ibm.com
	*
	* 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 <libfdt.h>
	#include <fdt_support.h>
	#include <ppc4xx.h>
	#include <asm/gpio.h>
	#include <asm/processor.h>
	#include <asm/io.h>
	#include <asm/bitops.h>

	DECLARE_GLOBAL_DATA_PTR;

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

	ulong flash_get_size (ulong base, int banknum);

	int board_early_init_f(void)
	{
	u32 sdr0_cust0;
	u32 sdr0_pfc1, sdr0_pfc2;
	u32 reg;

	mtdcr(ebccfga, xbcfg);
	mtdcr(ebccfgd, 0xb8400000);

	/*
	* 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 */

	/* 50MHz tmrclk */
	out_8((u8 *) CFG_BCSR_BASE + 0x04, 0x00);

	/* clear write protects */
	out_8((u8 *) CFG_BCSR_BASE + 0x07, 0x00);

	/* enable Ethernet */
	out_8((u8 *) CFG_BCSR_BASE + 0x08, 0x00);

	/* enable USB device */
	out_8((u8 *) CFG_BCSR_BASE + 0x09, 0x20);

	/* select Ethernet (and optionally IIC1) pins */
	mfsdr(SDR0_PFC1, sdr0_pfc1);
	sdr0_pfc1 = (sdr0_pfc1 & ~SDR0_PFC1_SELECT_MASK) \|
	SDR0_PFC1_SELECT_CONFIG_4;
	#ifdef CONFIG_I2C_MULTI_BUS
	sdr0_pfc1 \|= ((sdr0_pfc1 & ~SDR0_PFC1_SIS_MASK) \| SDR0_PFC1_SIS_IIC1_SEL);
	#endif
	mfsdr(SDR0_PFC2, sdr0_pfc2);
	sdr0_pfc2 = (sdr0_pfc2 & ~SDR0_PFC2_SELECT_MASK) \|
	SDR0_PFC2_SELECT_CONFIG_4;
	mtsdr(SDR0_PFC2, sdr0_pfc2);
	mtsdr(SDR0_PFC1, sdr0_pfc1);

	/* PCI arbiter enabled */
	mfsdr(sdr_pci0, reg);
	mtsdr(sdr_pci0, 0x80000000 \| reg);

	/* setup NAND FLASH */
	mfsdr(SDR0_CUST0, sdr0_cust0);
	sdr0_cust0 = SDR0_CUST0_MUX_NDFC_SEL \|
	SDR0_CUST0_NDFC_ENABLE \|
	SDR0_CUST0_NDFC_BW_8_BIT \|
	SDR0_CUST0_NDFC_ARE_MASK \|
	(0x80000000 >> (28 + CFG_NAND_CS));
	mtsdr(SDR0_CUST0, sdr0_cust0);

	return 0;
	}

	int misc_init_r(void)
	{
	uint pbcr;
	int size_val = 0;
	u32 reg;
	#ifdef CONFIG_440EPX
	unsigned long usb2d0cr = 0;
	unsigned long usb2phy0cr, usb2h0cr = 0;
	unsigned long sdr0_pfc1;
	char *act = getenv("usbact");
	#endif

	/* Re-do flash sizing to get full correct info */

	/* adjust flash start and offset */
	gd->bd->bi_flashstart = 0 - gd->bd->bi_flashsize;
	gd->bd->bi_flashoffset = 0;

	#if defined(CONFIG_NAND_U_BOOT) \|\| defined(CONFIG_NAND_SPL)
	mtdcr(ebccfga, pb3cr);
	#else
	mtdcr(ebccfga, pb0cr);
	#endif
	pbcr = mfdcr(ebccfgd);
	size_val = ffs(gd->bd->bi_flashsize) - 21;
	pbcr = (pbcr & 0x0001ffff) \| gd->bd->bi_flashstart \| (size_val << 17);
	#if defined(CONFIG_NAND_U_BOOT) \|\| defined(CONFIG_NAND_SPL)
	mtdcr(ebccfga, pb3cr);
	#else
	mtdcr(ebccfga, pb0cr);
	#endif
	mtdcr(ebccfgd, pbcr);

	/*
	* Re-check to get correct base address
	*/
	flash_get_size(gd->bd->bi_flashstart, 0);

	#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 suff...
	*/
	#ifdef CONFIG_440EPX
	if (act == NULL \|\| strcmp(act, "hostdev") == 0) {
	/* 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;
	usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_WDINT_MASK;
	usb2phy0cr = usb2phy0cr \| SDR0_USB2PHY0CR_WDINT_16BIT_30MHZ;
	usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_DVBUS_MASK;
	usb2phy0cr = usb2phy0cr \| SDR0_USB2PHY0CR_DVBUS_PURDIS;
	usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_DWNSTR_MASK;
	usb2phy0cr = usb2phy0cr \| SDR0_USB2PHY0CR_DWNSTR_HOST;
	usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_UTMICN_MASK;
	usb2phy0cr = usb2phy0cr \| SDR0_USB2PHY0CR_UTMICN_HOST;

	/*
	* 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;

	/*
	* 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;

	sdr0_pfc1 = sdr0_pfc1 &~SDR0_PFC1_UES_MASK;
	sdr0_pfc1 = sdr0_pfc1 \| SDR0_PFC1_UES_USB2D_SEL;

	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");

	} else if (strcmp(act, "dev") == 0) {
	/-------------------PATCH-------------------------------/
	mfsdr(SDR0_USB2PHY0CR, usb2phy0cr);

	usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_XOCLK_MASK;
	usb2phy0cr = usb2phy0cr \| SDR0_USB2PHY0CR_XOCLK_EXTERNAL;
	usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_DVBUS_MASK;
	usb2phy0cr = usb2phy0cr \| SDR0_USB2PHY0CR_DVBUS_PURDIS;
	usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_DWNSTR_MASK;
	usb2phy0cr = usb2phy0cr \| SDR0_USB2PHY0CR_DWNSTR_HOST;
	usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_UTMICN_MASK;
	usb2phy0cr = usb2phy0cr \| SDR0_USB2PHY0CR_UTMICN_HOST;
	mtsdr(SDR0_USB2PHY0CR, usb2phy0cr);

	udelay (1000);
	mtsdr(SDR0_SRST1, 0x672c6000);

	udelay (1000);
	mtsdr(SDR0_SRST0, 0x00000080);

	udelay (1000);
	mtsdr(SDR0_SRST1, 0x60206000);

	(unsigned int )(0xe0000350) = 0x00000001;

	udelay (1000);
	mtsdr(SDR0_SRST1, 0x60306000);
	/-------------------PATCH-------------------------------/

	/* SDR Setting */
	mfsdr(SDR0_USB2PHY0CR, usb2phy0cr);
	mfsdr(SDR0_USB2H0CR, usb2h0cr);
	mfsdr(SDR0_USB2D0CR, usb2d0cr);
	mfsdr(SDR0_PFC1, sdr0_pfc1);

	usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_XOCLK_MASK;
	usb2phy0cr = usb2phy0cr \| SDR0_USB2PHY0CR_XOCLK_EXTERNAL;
	usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_WDINT_MASK;
	usb2phy0cr = usb2phy0cr \| SDR0_USB2PHY0CR_WDINT_8BIT_60MHZ;
	usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_DVBUS_MASK;
	usb2phy0cr = usb2phy0cr \| SDR0_USB2PHY0CR_DVBUS_PUREN;
	usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_DWNSTR_MASK;
	usb2phy0cr = usb2phy0cr \| SDR0_USB2PHY0CR_DWNSTR_DEV;
	usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_UTMICN_MASK;
	usb2phy0cr = usb2phy0cr \| SDR0_USB2PHY0CR_UTMICN_DEV;

	usb2h0cr = usb2h0cr &~SDR0_USB2H0CR_WDINT_MASK;
	usb2h0cr = usb2h0cr \| SDR0_USB2H0CR_WDINT_8BIT_60MHZ;

	usb2d0cr = usb2d0cr &~SDR0_USB2D0CR_USB2DEV_EBC_SEL_MASK;
	usb2d0cr = usb2d0cr \| SDR0_USB2D0CR_EBC_SELECTION;

	sdr0_pfc1 = sdr0_pfc1 &~SDR0_PFC1_UES_MASK;
	sdr0_pfc1 = sdr0_pfc1 \| SDR0_PFC1_UES_EBCHR_SEL;

	mtsdr(SDR0_USB2H0CR, usb2h0cr);
	mtsdr(SDR0_USB2PHY0CR, usb2phy0cr);
	mtsdr(SDR0_USB2D0CR, usb2d0cr);
	mtsdr(SDR0_PFC1, sdr0_pfc1);

	/* clear resets */
	udelay (1000);
	mtsdr(SDR0_SRST1, 0x00000000);
	udelay (1000);
	mtsdr(SDR0_SRST0, 0x00000000);

	printf("USB: Device(int phy)\n");
	}
	#endif /* CONFIG_440EPX */

	mfsdr(SDR0_SRST1, reg); /* enable security/kasumi engines */
	reg &= ~(SDR0_SRST1_CRYP0 \| SDR0_SRST1_KASU0);
	mtsdr(SDR0_SRST1, reg);

	/*
	* Clear PLB4A0_ACR[WRP]
	* This fix will make the MAL burst disabling patch for the Linux
	* EMAC driver obsolete.
	*/
	reg = mfdcr(plb4_acr) & ~PLB4_ACR_WRP;
	mtdcr(plb4_acr, reg);

	return 0;
	}

	int checkboard(void)
	{
	char *s = getenv("serial#");
	u8 rev;
	u8 val;

	#ifdef CONFIG_440EPX
	printf("Board: Sequoia - AMCC PPC440EPx Evaluation Board");
	#else
	printf("Board: Rainier - AMCC PPC440GRx Evaluation Board");
	#endif

	rev = in_8((void *)(CFG_BCSR_BASE + 0));
	val = in_8((void *)(CFG_BCSR_BASE + 5)) & CFG_BCSR5_PCI66EN;
	printf(", Rev. %X, PCI=%d MHz", rev, val ? 66 : 33);

	if (s != NULL) {
	puts(", serial# ");
	puts(s);
	}
	putc('\n');

	return (0);
	}

	#if defined(CONFIG_PCI) && defined(CONFIG_PCI_PNP)
	/*
	* Assign interrupts to PCI devices.
	*/
	void sequoia_pci_fixup_irq(struct pci_controller *hose, pci_dev_t dev)
	{
	pci_hose_write_config_byte(hose, dev, PCI_INTERRUPT_LINE, VECNUM_EIRQ2);
	}
	#endif

	/*
	* 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 addr;

	/*
	* 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 \| 0x80000000);

	/*
	* 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);

	/*
	* 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) \| plb0_acr_wrp_2deep;
	mtdcr(plb0_acr, addr);

	/* 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) \| plb1_acr_wrp_2deep;
	mtdcr(plb1_acr, addr);

	#ifdef CONFIG_PCI_PNP
	hose->fixup_irq = sequoia_pci_fixup_irq;
	#endif
	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)
	{
	/*
	* 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.
	*/
	out32r(PCIX0_PMM0MA, 0x00000000); /* PMM0 Mask/Attribute */
	/* - disabled b4 setting */
	out32r(PCIX0_PMM0LA, CFG_PCI_MEMBASE); /* PMM0 Local Address */
	out32r(PCIX0_PMM0PCILA, CFG_PCI_MEMBASE); /* PMM0 PCI Low Address */
	out32r(PCIX0_PMM0PCIHA, 0x00000000); /* PMM0 PCI High Address */
	out32r(PCIX0_PMM0MA, 0xE0000001); /* 512M + No prefetching, */
	/* and enable region */

	out32r(PCIX0_PMM1MA, 0x00000000); /* PMM0 Mask/Attribute */
	/* - disabled b4 setting */
	out32r(PCIX0_PMM1LA, CFG_PCI_MEMBASE2); /* PMM0 Local Address */
	out32r(PCIX0_PMM1PCILA, CFG_PCI_MEMBASE2); /* PMM0 PCI Low Address */
	out32r(PCIX0_PMM1PCIHA, 0x00000000); /* PMM0 PCI High Address */
	out32r(PCIX0_PMM1MA, 0xE0000001); /* 512M + No prefetching, */
	/* and enable region */

	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) */

	#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)
	{
	/* Cactus is always configured as host. */
	return (1);
	}
	#endif /* defined(CONFIG_PCI) */

	#if defined(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 0; /* No hotkeys supported */
	}
	#endif /* CONFIG_POST */