/*
 * Copyright 2006, 2007 Freescale Semiconductor.
 *
 * 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 <pci.h>
#include <asm/processor.h>
#include <asm/immap_86xx.h>
#include <asm/immap_fsl_pci.h>
#include <asm/fsl_ddr_sdram.h>
#include <asm/io.h>
#include <libfdt.h>
#include <fdt_support.h>
#include <netdev.h>

#include "../common/pixis.h"

phys_size_t fixed_sdram(void);

int board_early_init_f(void)
{
	return 0;
}

int checkboard(void)
{
	printf ("Board: MPC8641HPCN, System ID: 0x%02x, "
		"System Version: 0x%02x, FPGA Version: 0x%02x\n",
		in8(PIXIS_BASE + PIXIS_ID), in8(PIXIS_BASE + PIXIS_VER),
		in8(PIXIS_BASE + PIXIS_PVER));
	return 0;
}


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

#if defined(CONFIG_SPD_EEPROM)
	dram_size = fsl_ddr_sdram();
#else
	dram_size = fixed_sdram();
#endif

#if defined(CONFIG_SYS_RAMBOOT)
	puts("    DDR: ");
	return dram_size;
#endif

	puts("    DDR: ");
	return dram_size;
}


#if !defined(CONFIG_SPD_EEPROM)
/*
 * Fixed sdram init -- doesn't use serial presence detect.
 */
phys_size_t
fixed_sdram(void)
{
#if !defined(CONFIG_SYS_RAMBOOT)
	volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
	volatile ccsr_ddr_t *ddr = &immap->im_ddr1;

	ddr->cs0_bnds = CONFIG_SYS_DDR_CS0_BNDS;
	ddr->cs0_config = CONFIG_SYS_DDR_CS0_CONFIG;
	ddr->timing_cfg_3 = CONFIG_SYS_DDR_TIMING_3;
	ddr->timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0;
	ddr->timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1;
	ddr->timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2;
	ddr->sdram_mode_1 = CONFIG_SYS_DDR_MODE_1;
	ddr->sdram_mode_2 = CONFIG_SYS_DDR_MODE_2;
	ddr->sdram_interval = CONFIG_SYS_DDR_INTERVAL;
	ddr->sdram_data_init = CONFIG_SYS_DDR_DATA_INIT;
	ddr->sdram_clk_cntl = CONFIG_SYS_DDR_CLK_CTRL;
	ddr->sdram_ocd_cntl = CONFIG_SYS_DDR_OCD_CTRL;
	ddr->sdram_ocd_status = CONFIG_SYS_DDR_OCD_STATUS;

#if defined (CONFIG_DDR_ECC)
	ddr->err_disable = 0x0000008D;
	ddr->err_sbe = 0x00ff0000;
#endif
	asm("sync;isync");

	udelay(500);

#if defined (CONFIG_DDR_ECC)
	/* Enable ECC checking */
	ddr->sdram_cfg_1 = (CONFIG_SYS_DDR_CONTROL | 0x20000000);
#else
	ddr->sdram_cfg_1 = CONFIG_SYS_DDR_CONTROL;
	ddr->sdram_cfg_2 = CONFIG_SYS_DDR_CONTROL2;
#endif
	asm("sync; isync");

	udelay(500);
#endif
	return CONFIG_SYS_SDRAM_SIZE * 1024 * 1024;
}
#endif	/* !defined(CONFIG_SPD_EEPROM) */


#if defined(CONFIG_PCI)
static struct pci_controller pci1_hose;
#endif /* CONFIG_PCI */

#ifdef CONFIG_PCI2
static struct pci_controller pci2_hose;
#endif	/* CONFIG_PCI2 */

int first_free_busno = 0;

extern int fsl_pci_setup_inbound_windows(struct pci_region *r);
extern void fsl_pci_init(struct pci_controller *hose);

void pci_init_board(void)
{
#ifdef CONFIG_PCI1
{
	volatile ccsr_fsl_pci_t *pci = (ccsr_fsl_pci_t *) CONFIG_SYS_PCI1_ADDR;
	struct pci_controller *hose = &pci1_hose;
	struct pci_region *r = hose->regions;
	volatile immap_t *immap = (immap_t *) CONFIG_SYS_CCSRBAR;
	volatile ccsr_gur_t *gur = &immap->im_gur;
	uint devdisr = gur->devdisr;
	uint io_sel = (gur->pordevsr & MPC8641_PORDEVSR_IO_SEL)
		>> MPC8641_PORDEVSR_IO_SEL_SHIFT;

#ifdef DEBUG
	uint host1_agent = (gur->porbmsr & MPC8641_PORBMSR_HA)
		>> MPC8641_PORBMSR_HA_SHIFT;
	uint pex1_agent = (host1_agent == 0) || (host1_agent == 1);
#endif
	if ((io_sel == 2 || io_sel == 3 || io_sel == 5
	     || io_sel == 6 || io_sel == 7 || io_sel == 0xF)
	    && !(devdisr & MPC86xx_DEVDISR_PCIEX1)) {
		debug("PCI-EXPRESS 1: %s \n", pex1_agent ? "Agent" : "Host");
		debug("0x%08x=0x%08x ", &pci->pme_msg_det, pci->pme_msg_det);
		if (pci->pme_msg_det) {
			pci->pme_msg_det = 0xffffffff;
			debug(" with errors.  Clearing.  Now 0x%08x",
			      pci->pme_msg_det);
		}
		debug("\n");

		/* inbound */
		r += fsl_pci_setup_inbound_windows(r);

		/* outbound memory */
		pci_set_region(r++,
			       CONFIG_SYS_PCI1_MEM_BASE,
			       CONFIG_SYS_PCI1_MEM_PHYS,
			       CONFIG_SYS_PCI1_MEM_SIZE,
			       PCI_REGION_MEM);

		/* outbound io */
		pci_set_region(r++,
			       CONFIG_SYS_PCI1_IO_BASE,
			       CONFIG_SYS_PCI1_IO_PHYS,
			       CONFIG_SYS_PCI1_IO_SIZE,
			       PCI_REGION_IO);

		hose->region_count = r - hose->regions;

		hose->first_busno=first_free_busno;
		pci_setup_indirect(hose, (int) &pci->cfg_addr, (int) &pci->cfg_data);

		fsl_pci_init(hose);

		first_free_busno=hose->last_busno+1;
		printf ("    PCI-EXPRESS 1 on bus %02x - %02x\n",
			hose->first_busno,hose->last_busno);

		/*
		 * Activate ULI1575 legacy chip by performing a fake
		 * memory access.  Needed to make ULI RTC work.
		 */
		in_be32((unsigned *) ((char *)(CONFIG_SYS_PCI1_MEM_BASE
				       + CONFIG_SYS_PCI1_MEM_SIZE - 0x1000000)));

	} else {
		puts("PCI-EXPRESS 1: Disabled\n");
	}
}
#else
	puts("PCI-EXPRESS1: Disabled\n");
#endif /* CONFIG_PCI1 */

#ifdef CONFIG_PCI2
{
	volatile ccsr_fsl_pci_t *pci = (ccsr_fsl_pci_t *) CONFIG_SYS_PCI2_ADDR;
	struct pci_controller *hose = &pci2_hose;
	struct pci_region *r = hose->regions;

	/* inbound */
	r += fsl_pci_setup_inbound_windows(r);

	/* outbound memory */
	pci_set_region(r++,
		       CONFIG_SYS_PCI2_MEM_BASE,
		       CONFIG_SYS_PCI2_MEM_PHYS,
		       CONFIG_SYS_PCI2_MEM_SIZE,
		       PCI_REGION_MEM);

	/* outbound io */
	pci_set_region(r++,
		       CONFIG_SYS_PCI2_IO_BASE,
		       CONFIG_SYS_PCI2_IO_PHYS,
		       CONFIG_SYS_PCI2_IO_SIZE,
		       PCI_REGION_IO);

	hose->region_count = r - hose->regions;

	hose->first_busno=first_free_busno;
	pci_setup_indirect(hose, (int) &pci->cfg_addr, (int) &pci->cfg_data);

	fsl_pci_init(hose);

	first_free_busno=hose->last_busno+1;
	printf ("    PCI-EXPRESS 2 on bus %02x - %02x\n",
		hose->first_busno,hose->last_busno);
}
#else
	puts("PCI-EXPRESS 2: Disabled\n");
#endif /* CONFIG_PCI2 */

}


#if defined(CONFIG_OF_BOARD_SETUP)
extern void ft_fsl_pci_setup(void *blob, const char *pci_alias,
			struct pci_controller *hose);

void
ft_board_setup(void *blob, bd_t *bd)
{
	ft_cpu_setup(blob, bd);

#ifdef CONFIG_PCI1
	ft_fsl_pci_setup(blob, "pci0", &pci1_hose);
#endif
#ifdef CONFIG_PCI2
	ft_fsl_pci_setup(blob, "pci1", &pci2_hose);
#endif
}
#endif


/*
 * get_board_sys_clk
 *      Reads the FPGA on board for CONFIG_SYS_CLK_FREQ
 */

unsigned long
get_board_sys_clk(ulong dummy)
{
	u8 i, go_bit, rd_clks;
	ulong val = 0;

	go_bit = in8(PIXIS_BASE + PIXIS_VCTL);
	go_bit &= 0x01;

	rd_clks = in8(PIXIS_BASE + PIXIS_VCFGEN0);
	rd_clks &= 0x1C;

	/*
	 * Only if both go bit and the SCLK bit in VCFGEN0 are set
	 * should we be using the AUX register. Remember, we also set the
	 * GO bit to boot from the alternate bank on the on-board flash
	 */

	if (go_bit) {
		if (rd_clks == 0x1c)
			i = in8(PIXIS_BASE + PIXIS_AUX);
		else
			i = in8(PIXIS_BASE + PIXIS_SPD);
	} else {
		i = in8(PIXIS_BASE + PIXIS_SPD);
	}

	i &= 0x07;

	switch (i) {
	case 0:
		val = 33000000;
		break;
	case 1:
		val = 40000000;
		break;
	case 2:
		val = 50000000;
		break;
	case 3:
		val = 66000000;
		break;
	case 4:
		val = 83000000;
		break;
	case 5:
		val = 100000000;
		break;
	case 6:
		val = 134000000;
		break;
	case 7:
		val = 166000000;
		break;
	}

	return val;
}

int board_eth_init(bd_t *bis)
{
	/* Initialize TSECs */
	cpu_eth_init(bis);
	return pci_eth_init(bis);
}