arch/ppc/platforms/cpci690.c - LeafOS-Devices/android_kernel_realme_mt6785 - Gitiles

 /*
  * Board setup routines for the Force CPCI690 board.
  *
  * Author: Mark A. Greer <mgreer@mvista.com>
  *
  * 2003 (c) MontaVista Software, Inc.  This file is licensed under
  * the terms of the GNU General Public License version 2.  This programr
  * is licensed "as is" without any warranty of any kind, whether express
  * or implied.
  */
 #include <linux/config.h>
 #include <linux/delay.h>
 #include <linux/pci.h>
 #include <linux/ide.h>
 #include <linux/irq.h>
 #include <linux/fs.h>
 #include <linux/seq_file.h>
 #include <linux/console.h>
 #include <linux/initrd.h>
 #include <linux/root_dev.h>
 #include <linux/mv643xx.h>
 #include <linux/platform_device.h>
 #include <asm/bootinfo.h>
 #include <asm/machdep.h>
 #include <asm/todc.h>
 #include <asm/time.h>
 #include <asm/mv64x60.h>
 #include <platforms/cpci690.h>

 #define BOARD_VENDOR	"Force"
 #define BOARD_MACHINE	"CPCI690"

 /* Set IDE controllers into Native mode? */
 #define SET_PCI_IDE_NATIVE

 static struct mv64x60_handle	bh;
 static void __iomem *cpci690_br_base;

 TODC_ALLOC();

 static int __init
 cpci690_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
 {
 	struct pci_controller	*hose = pci_bus_to_hose(dev->bus->number);

 	if (hose->index == 0) {
 		static char pci_irq_table[][4] =
 		/*
 		 *	PCI IDSEL/INTPIN->INTLINE
 		 * 	   A   B   C   D
 		 */
 		{
 			{ 90, 91, 88, 89 }, /* IDSEL 30/20 - Sentinel */
 		};

 		const long min_idsel = 20, max_idsel = 20, irqs_per_slot = 4;
 		return PCI_IRQ_TABLE_LOOKUP;
 	} else {
 		static char pci_irq_table[][4] =
 		/*
 		 *	PCI IDSEL/INTPIN->INTLINE
 		 * 	   A   B   C   D
 		 */
 		{
 			{ 93, 94, 95, 92 }, /* IDSEL 28/18 - PMC slot 2 */
 			{  0,  0,  0,  0 }, /* IDSEL 29/19 - Not used */
 			{ 94, 95, 92, 93 }, /* IDSEL 30/20 - PMC slot 1 */
 		};

 		const long min_idsel = 18, max_idsel = 20, irqs_per_slot = 4;
 		return PCI_IRQ_TABLE_LOOKUP;
 	}
 }

 #define	GB	(1024UL * 1024UL * 1024UL)

 static u32
 cpci690_get_bus_freq(void)
 {
 	if (boot_mem_size >= (1*GB)) /* bus speed based on mem size */
 		return 100000000;
 	else
 		return 133333333;
 }

 static const unsigned int cpu_750xx[32] = { /* 750FX & 750GX */
 	 0,  0,  2,  2,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15,/* 0-15*/
 	16, 17, 18, 19, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40,  0 /*16-31*/
 };

 static int
 cpci690_get_cpu_freq(void)
 {
 	unsigned long	pll_cfg;

 	pll_cfg = (mfspr(SPRN_HID1) & 0xf8000000) >> 27;
 	return cpci690_get_bus_freq() * cpu_750xx[pll_cfg]/2;
 }

 static void __init
 cpci690_setup_bridge(void)
 {
 	struct mv64x60_setup_info	si;
 	int				i;

 	memset(&si, 0, sizeof(si));

 	si.phys_reg_base = CONFIG_MV64X60_NEW_BASE;

 	si.pci_0.enable_bus = 1;
 	si.pci_0.pci_io.cpu_base = CPCI690_PCI0_IO_START_PROC_ADDR;
 	si.pci_0.pci_io.pci_base_hi = 0;
 	si.pci_0.pci_io.pci_base_lo = CPCI690_PCI0_IO_START_PCI_ADDR;
 	si.pci_0.pci_io.size = CPCI690_PCI0_IO_SIZE;
 	si.pci_0.pci_io.swap = MV64x60_CPU2PCI_SWAP_NONE;
 	si.pci_0.pci_mem[0].cpu_base = CPCI690_PCI0_MEM_START_PROC_ADDR;
 	si.pci_0.pci_mem[0].pci_base_hi = CPCI690_PCI0_MEM_START_PCI_HI_ADDR;
 	si.pci_0.pci_mem[0].pci_base_lo = CPCI690_PCI0_MEM_START_PCI_LO_ADDR;
 	si.pci_0.pci_mem[0].size = CPCI690_PCI0_MEM_SIZE;
 	si.pci_0.pci_mem[0].swap = MV64x60_CPU2PCI_SWAP_NONE;
 	si.pci_0.pci_cmd_bits = 0;
 	si.pci_0.latency_timer = 0x80;

 	si.pci_1.enable_bus = 1;
 	si.pci_1.pci_io.cpu_base = CPCI690_PCI1_IO_START_PROC_ADDR;
 	si.pci_1.pci_io.pci_base_hi = 0;
 	si.pci_1.pci_io.pci_base_lo = CPCI690_PCI1_IO_START_PCI_ADDR;
 	si.pci_1.pci_io.size = CPCI690_PCI1_IO_SIZE;
 	si.pci_1.pci_io.swap = MV64x60_CPU2PCI_SWAP_NONE;
 	si.pci_1.pci_mem[0].cpu_base = CPCI690_PCI1_MEM_START_PROC_ADDR;
 	si.pci_1.pci_mem[0].pci_base_hi = CPCI690_PCI1_MEM_START_PCI_HI_ADDR;
 	si.pci_1.pci_mem[0].pci_base_lo = CPCI690_PCI1_MEM_START_PCI_LO_ADDR;
 	si.pci_1.pci_mem[0].size = CPCI690_PCI1_MEM_SIZE;
 	si.pci_1.pci_mem[0].swap = MV64x60_CPU2PCI_SWAP_NONE;
 	si.pci_1.pci_cmd_bits = 0;
 	si.pci_1.latency_timer = 0x80;

 	for (i=0; i<MV64x60_CPU2MEM_WINDOWS; i++) {
 		si.cpu_prot_options[i] = 0;
 		si.cpu_snoop_options[i] = GT64260_CPU_SNOOP_WB;
 		si.pci_0.acc_cntl_options[i] =
 			GT64260_PCI_ACC_CNTL_DREADEN |
 			GT64260_PCI_ACC_CNTL_RDPREFETCH |
 			GT64260_PCI_ACC_CNTL_RDLINEPREFETCH |
 			GT64260_PCI_ACC_CNTL_RDMULPREFETCH |
 			GT64260_PCI_ACC_CNTL_SWAP_NONE |
 			GT64260_PCI_ACC_CNTL_MBURST_32_BTYES;
 		si.pci_0.snoop_options[i] = GT64260_PCI_SNOOP_WB;
 		si.pci_1.acc_cntl_options[i] =
 			GT64260_PCI_ACC_CNTL_DREADEN |
 			GT64260_PCI_ACC_CNTL_RDPREFETCH |
 			GT64260_PCI_ACC_CNTL_RDLINEPREFETCH |
 			GT64260_PCI_ACC_CNTL_RDMULPREFETCH |
 			GT64260_PCI_ACC_CNTL_SWAP_NONE |
 			GT64260_PCI_ACC_CNTL_MBURST_32_BTYES;
 		si.pci_1.snoop_options[i] = GT64260_PCI_SNOOP_WB;
 	}

         /* Lookup PCI host bridges */
         if (mv64x60_init(&bh, &si))
                 printk(KERN_ERR "Bridge initialization failed.\n");

 	pci_dram_offset = 0; /* System mem at same addr on PCI & cpu bus */
 	ppc_md.pci_swizzle = common_swizzle;
 	ppc_md.pci_map_irq = cpci690_map_irq;
 	ppc_md.pci_exclude_device = mv64x60_pci_exclude_device;

 	mv64x60_set_bus(&bh, 0, 0);
 	bh.hose_a->first_busno = 0;
 	bh.hose_a->last_busno = 0xff;
 	bh.hose_a->last_busno = pciauto_bus_scan(bh.hose_a, 0);

 	bh.hose_b->first_busno = bh.hose_a->last_busno + 1;
 	mv64x60_set_bus(&bh, 1, bh.hose_b->first_busno);
 	bh.hose_b->last_busno = 0xff;
 	bh.hose_b->last_busno = pciauto_bus_scan(bh.hose_b,
 		bh.hose_b->first_busno);
 }

 static void __init
 cpci690_setup_peripherals(void)
 {
 	/* Set up windows to CPLD, RTC/TODC, IPMI. */
 	mv64x60_set_32bit_window(&bh, MV64x60_CPU2DEV_0_WIN, CPCI690_BR_BASE,
 		CPCI690_BR_SIZE, 0);
 	bh.ci->enable_window_32bit(&bh, MV64x60_CPU2DEV_0_WIN);
 	cpci690_br_base = ioremap(CPCI690_BR_BASE, CPCI690_BR_SIZE);

 	mv64x60_set_32bit_window(&bh, MV64x60_CPU2DEV_1_WIN, CPCI690_TODC_BASE,
 		CPCI690_TODC_SIZE, 0);
 	bh.ci->enable_window_32bit(&bh, MV64x60_CPU2DEV_1_WIN);
 	TODC_INIT(TODC_TYPE_MK48T35, 0, 0,
 			ioremap(CPCI690_TODC_BASE, CPCI690_TODC_SIZE), 8);

 	mv64x60_set_32bit_window(&bh, MV64x60_CPU2DEV_2_WIN, CPCI690_IPMI_BASE,
 		CPCI690_IPMI_SIZE, 0);
 	bh.ci->enable_window_32bit(&bh, MV64x60_CPU2DEV_2_WIN);

 	mv64x60_set_bits(&bh, MV64x60_PCI0_ARBITER_CNTL, (1<<31));
 	mv64x60_set_bits(&bh, MV64x60_PCI1_ARBITER_CNTL, (1<<31));

         mv64x60_set_bits(&bh, MV64x60_CPU_MASTER_CNTL, (1<<9)); /* Only 1 cpu */

 	/*
 	 * Turn off timer/counters.  Not turning off watchdog timer because
 	 * can't read its reg on the 64260A so don't know if we'll be enabling
 	 * or disabling.
 	 */
 	mv64x60_clr_bits(&bh, MV64x60_TIMR_CNTR_0_3_CNTL,
 			((1<<0) | (1<<8) | (1<<16) | (1<<24)));
 	mv64x60_clr_bits(&bh, GT64260_TIMR_CNTR_4_7_CNTL,
 			((1<<0) | (1<<8) | (1<<16) | (1<<24)));

 	/*
 	 * Set MPSC Multiplex RMII
 	 * NOTE: ethernet driver modifies bit 0 and 1
 	 */
 	mv64x60_write(&bh, GT64260_MPP_SERIAL_PORTS_MULTIPLEX, 0x00001102);

 #define GPP_EXTERNAL_INTERRUPTS \
 		((1<<24) | (1<<25) | (1<<26) | (1<<27) | \
 		 (1<<28) | (1<<29) | (1<<30) | (1<<31))
 	/* PCI interrupts are inputs */
 	mv64x60_clr_bits(&bh, MV64x60_GPP_IO_CNTL, GPP_EXTERNAL_INTERRUPTS);
 	/* PCI interrupts are active low */
 	mv64x60_set_bits(&bh, MV64x60_GPP_LEVEL_CNTL, GPP_EXTERNAL_INTERRUPTS);

 	/* Clear any pending interrupts for these inputs and enable them. */
 	mv64x60_write(&bh, MV64x60_GPP_INTR_CAUSE, ~GPP_EXTERNAL_INTERRUPTS);
 	mv64x60_set_bits(&bh, MV64x60_GPP_INTR_MASK, GPP_EXTERNAL_INTERRUPTS);

 	/* Route MPP interrupt inputs to GPP */
 	mv64x60_write(&bh, MV64x60_MPP_CNTL_2, 0x00000000);
 	mv64x60_write(&bh, MV64x60_MPP_CNTL_3, 0x00000000);
 }

 static void __init
 cpci690_setup_arch(void)
 {
 	if (ppc_md.progress)
 		ppc_md.progress("cpci690_setup_arch: enter", 0);
 #ifdef CONFIG_BLK_DEV_INITRD
 	if (initrd_start)
 		ROOT_DEV = Root_RAM0;
 	else
 #endif
 #ifdef   CONFIG_ROOT_NFS
 		ROOT_DEV = Root_NFS;
 #else
 		ROOT_DEV = Root_SDA2;
 #endif

 	if (ppc_md.progress)
 		ppc_md.progress("cpci690_setup_arch: Enabling L2 cache", 0);

 	/* Enable L2 and L3 caches (if 745x) */
 	_set_L2CR(_get_L2CR() | L2CR_L2E);
 	_set_L3CR(_get_L3CR() | L3CR_L3E);

 	if (ppc_md.progress)
 		ppc_md.progress("cpci690_setup_arch: Initializing bridge", 0);

 	cpci690_setup_bridge();		/* set up PCI bridge(s) */
 	cpci690_setup_peripherals();	/* set up chip selects/GPP/MPP etc */

 	if (ppc_md.progress)
 		ppc_md.progress("cpci690_setup_arch: bridge init complete", 0);

 	printk(KERN_INFO "%s %s port (C) 2003 MontaVista Software, Inc. "
 		"(source@mvista.com)\n", BOARD_VENDOR, BOARD_MACHINE);

 	if (ppc_md.progress)
 		ppc_md.progress("cpci690_setup_arch: exit", 0);
 }

 /* Platform device data fixup routines. */
 #if defined(CONFIG_SERIAL_MPSC)
 static void __init
 cpci690_fixup_mpsc_pdata(struct platform_device *pdev)
 {
 	struct mpsc_pdata *pdata;

 	pdata = (struct mpsc_pdata *)pdev->dev.platform_data;

 	pdata->max_idle = 40;
 	pdata->default_baud = CPCI690_MPSC_BAUD;
 	pdata->brg_clk_src = CPCI690_MPSC_CLK_SRC;
 	pdata->brg_clk_freq = cpci690_get_bus_freq();
 }

 static int
 cpci690_platform_notify(struct device *dev)
 {
 	static struct {
 		char	*bus_id;
 		void	((*rtn)(struct platform_device *pdev));
 	} dev_map[] = {
 		{ MPSC_CTLR_NAME ".0", cpci690_fixup_mpsc_pdata },
 		{ MPSC_CTLR_NAME ".1", cpci690_fixup_mpsc_pdata },
 	};
 	struct platform_device	*pdev;
 	int	i;

 	if (dev && dev->bus_id)
 		for (i=0; i<ARRAY_SIZE(dev_map); i++)
 			if (!strncmp(dev->bus_id, dev_map[i].bus_id,
 				BUS_ID_SIZE)) {

 				pdev = container_of(dev,
 					struct platform_device, dev);
 				dev_map[i].rtn(pdev);
 			}

 	return 0;
 }
 #endif

 static void
 cpci690_reset_board(void)
 {
 	u32	i = 10000;

 	local_irq_disable();
 	out_8((cpci690_br_base + CPCI690_BR_SW_RESET), 0x11);

 	while (i != 0) i++;
 	panic("restart failed\n");
 }

 static void
 cpci690_restart(char *cmd)
 {
 	cpci690_reset_board();
 }

 static void
 cpci690_halt(void)
 {
 	while (1);
 	/* NOTREACHED */
 }

 static void
 cpci690_power_off(void)
 {
 	cpci690_halt();
 	/* NOTREACHED */
 }

 static int
 cpci690_show_cpuinfo(struct seq_file *m)
 {
 	char	*s;

 	seq_printf(m, "cpu MHz\t\t: %d\n",
 		(cpci690_get_cpu_freq() + 500000) / 1000000);
 	seq_printf(m, "bus MHz\t\t: %d\n",
 		(cpci690_get_bus_freq() + 500000) / 1000000);
 	seq_printf(m, "vendor\t\t: " BOARD_VENDOR "\n");
 	seq_printf(m, "machine\t\t: " BOARD_MACHINE "\n");
 	seq_printf(m, "FPGA Revision\t: %d\n",
 		in_8(cpci690_br_base + CPCI690_BR_MEM_CTLR) >> 5);

 	switch(bh.type) {
 	case MV64x60_TYPE_GT64260A:
 		s = "gt64260a";
 		break;
 	case MV64x60_TYPE_GT64260B:
 		s = "gt64260b";
 		break;
 	case MV64x60_TYPE_MV64360:
 		s = "mv64360";
 		break;
 	case MV64x60_TYPE_MV64460:
 		s = "mv64460";
 		break;
 	default:
 		s = "Unknown";
 	}
 	seq_printf(m, "bridge type\t: %s\n", s);
 	seq_printf(m, "bridge rev\t: 0x%x\n", bh.rev);
 #if defined(CONFIG_NOT_COHERENT_CACHE)
 	seq_printf(m, "coherency\t: %s\n", "off");
 #else
 	seq_printf(m, "coherency\t: %s\n", "on");
 #endif

 	return 0;
 }

 static void __init
 cpci690_calibrate_decr(void)
 {
 	ulong freq;

 	freq = cpci690_get_bus_freq() / 4;

 	printk(KERN_INFO "time_init: decrementer frequency = %lu.%.6lu MHz\n",
 	       freq/1000000, freq%1000000);

 	tb_ticks_per_jiffy = freq / HZ;
 	tb_to_us = mulhwu_scale_factor(freq, 1000000);
 }

 #if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB_MPSC)
 static void __init
 cpci690_map_io(void)
 {
 	io_block_mapping(CONFIG_MV64X60_NEW_BASE, CONFIG_MV64X60_NEW_BASE,
 		128 * 1024, _PAGE_IO);
 }
 #endif

 void __init
 platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
 	      unsigned long r6, unsigned long r7)
 {
 	parse_bootinfo(find_bootinfo());

 #ifdef CONFIG_BLK_DEV_INITRD
 	/* take care of initrd if we have one */
 	if (r4) {
 		initrd_start = r4 + KERNELBASE;
 		initrd_end = r5 + KERNELBASE;
 	}
 #endif /* CONFIG_BLK_DEV_INITRD */

 	isa_mem_base = 0;

 	ppc_md.setup_arch = cpci690_setup_arch;
 	ppc_md.show_cpuinfo = cpci690_show_cpuinfo;
 	ppc_md.init_IRQ = gt64260_init_irq;
 	ppc_md.get_irq = gt64260_get_irq;
 	ppc_md.restart = cpci690_restart;
 	ppc_md.power_off = cpci690_power_off;
 	ppc_md.halt = cpci690_halt;
 	ppc_md.time_init = todc_time_init;
 	ppc_md.set_rtc_time = todc_set_rtc_time;
 	ppc_md.get_rtc_time = todc_get_rtc_time;
 	ppc_md.nvram_read_val = todc_direct_read_val;
 	ppc_md.nvram_write_val = todc_direct_write_val;
 	ppc_md.calibrate_decr = cpci690_calibrate_decr;

 #if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB_MPSC)
 	ppc_md.setup_io_mappings = cpci690_map_io;
 #ifdef CONFIG_SERIAL_TEXT_DEBUG
 	ppc_md.progress = mv64x60_mpsc_progress;
 	mv64x60_progress_init(CONFIG_MV64X60_NEW_BASE);
 #endif	/* CONFIG_SERIAL_TEXT_DEBUG */
 #endif	/* defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB_MPSC) */

 #if defined(CONFIG_SERIAL_MPSC)
 	platform_notify = cpci690_platform_notify;
 #endif
 }
	/*
	* Board setup routines for the Force CPCI690 board.
	*
	* Author: Mark A. Greer <mgreer@mvista.com>
	*
	* 2003 (c) MontaVista Software, Inc. This file is licensed under
	* the terms of the GNU General Public License version 2. This programr
	* is licensed "as is" without any warranty of any kind, whether express
	* or implied.
	*/
	#include <linux/config.h>
	#include <linux/delay.h>
	#include <linux/pci.h>
	#include <linux/ide.h>
	#include <linux/irq.h>
	#include <linux/fs.h>
	#include <linux/seq_file.h>
	#include <linux/console.h>
	#include <linux/initrd.h>
	#include <linux/root_dev.h>
	#include <linux/mv643xx.h>
	#include <linux/platform_device.h>
	#include <asm/bootinfo.h>
	#include <asm/machdep.h>
	#include <asm/todc.h>
	#include <asm/time.h>
	#include <asm/mv64x60.h>
	#include <platforms/cpci690.h>

	#define BOARD_VENDOR "Force"
	#define BOARD_MACHINE "CPCI690"

	/* Set IDE controllers into Native mode? */
	#define SET_PCI_IDE_NATIVE

	static struct mv64x60_handle bh;
	static void __iomem *cpci690_br_base;

	TODC_ALLOC();

	static int __init
	cpci690_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
	{
	struct pci_controller *hose = pci_bus_to_hose(dev->bus->number);

	if (hose->index == 0) {
	static char pci_irq_table[][4] =
	/*
	* PCI IDSEL/INTPIN->INTLINE
	* A B C D
	*/
	{
	{ 90, 91, 88, 89 }, /* IDSEL 30/20 - Sentinel */
	};

	const long min_idsel = 20, max_idsel = 20, irqs_per_slot = 4;
	return PCI_IRQ_TABLE_LOOKUP;
	} else {
	static char pci_irq_table[][4] =
	/*
	* PCI IDSEL/INTPIN->INTLINE
	* A B C D
	*/
	{
	{ 93, 94, 95, 92 }, /* IDSEL 28/18 - PMC slot 2 */
	{ 0, 0, 0, 0 }, /* IDSEL 29/19 - Not used */
	{ 94, 95, 92, 93 }, /* IDSEL 30/20 - PMC slot 1 */
	};

	const long min_idsel = 18, max_idsel = 20, irqs_per_slot = 4;
	return PCI_IRQ_TABLE_LOOKUP;
	}
	}

	#define GB (1024UL * 1024UL * 1024UL)

	static u32
	cpci690_get_bus_freq(void)
	{
	if (boot_mem_size >= (1GB)) / bus speed based on mem size */
	return 100000000;
	else
	return 133333333;
	}

	static const unsigned int cpu_750xx[32] = { /* 750FX & 750GX */
	0, 0, 2, 2, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,/* 0-15*/
	16, 17, 18, 19, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 0 /16-31/
	};

	static int
	cpci690_get_cpu_freq(void)
	{
	unsigned long pll_cfg;

	pll_cfg = (mfspr(SPRN_HID1) & 0xf8000000) >> 27;
	return cpci690_get_bus_freq() * cpu_750xx[pll_cfg]/2;
	}

	static void __init
	cpci690_setup_bridge(void)
	{
	struct mv64x60_setup_info si;
	int i;

	memset(&si, 0, sizeof(si));

	si.phys_reg_base = CONFIG_MV64X60_NEW_BASE;

	si.pci_0.enable_bus = 1;
	si.pci_0.pci_io.cpu_base = CPCI690_PCI0_IO_START_PROC_ADDR;
	si.pci_0.pci_io.pci_base_hi = 0;
	si.pci_0.pci_io.pci_base_lo = CPCI690_PCI0_IO_START_PCI_ADDR;
	si.pci_0.pci_io.size = CPCI690_PCI0_IO_SIZE;
	si.pci_0.pci_io.swap = MV64x60_CPU2PCI_SWAP_NONE;
	si.pci_0.pci_mem[0].cpu_base = CPCI690_PCI0_MEM_START_PROC_ADDR;
	si.pci_0.pci_mem[0].pci_base_hi = CPCI690_PCI0_MEM_START_PCI_HI_ADDR;
	si.pci_0.pci_mem[0].pci_base_lo = CPCI690_PCI0_MEM_START_PCI_LO_ADDR;
	si.pci_0.pci_mem[0].size = CPCI690_PCI0_MEM_SIZE;
	si.pci_0.pci_mem[0].swap = MV64x60_CPU2PCI_SWAP_NONE;
	si.pci_0.pci_cmd_bits = 0;
	si.pci_0.latency_timer = 0x80;

	si.pci_1.enable_bus = 1;
	si.pci_1.pci_io.cpu_base = CPCI690_PCI1_IO_START_PROC_ADDR;
	si.pci_1.pci_io.pci_base_hi = 0;
	si.pci_1.pci_io.pci_base_lo = CPCI690_PCI1_IO_START_PCI_ADDR;
	si.pci_1.pci_io.size = CPCI690_PCI1_IO_SIZE;
	si.pci_1.pci_io.swap = MV64x60_CPU2PCI_SWAP_NONE;
	si.pci_1.pci_mem[0].cpu_base = CPCI690_PCI1_MEM_START_PROC_ADDR;
	si.pci_1.pci_mem[0].pci_base_hi = CPCI690_PCI1_MEM_START_PCI_HI_ADDR;
	si.pci_1.pci_mem[0].pci_base_lo = CPCI690_PCI1_MEM_START_PCI_LO_ADDR;
	si.pci_1.pci_mem[0].size = CPCI690_PCI1_MEM_SIZE;
	si.pci_1.pci_mem[0].swap = MV64x60_CPU2PCI_SWAP_NONE;
	si.pci_1.pci_cmd_bits = 0;
	si.pci_1.latency_timer = 0x80;

	for (i=0; i<MV64x60_CPU2MEM_WINDOWS; i++) {
	si.cpu_prot_options[i] = 0;
	si.cpu_snoop_options[i] = GT64260_CPU_SNOOP_WB;
	si.pci_0.acc_cntl_options[i] =
	GT64260_PCI_ACC_CNTL_DREADEN \|
	GT64260_PCI_ACC_CNTL_RDPREFETCH \|
	GT64260_PCI_ACC_CNTL_RDLINEPREFETCH \|
	GT64260_PCI_ACC_CNTL_RDMULPREFETCH \|
	GT64260_PCI_ACC_CNTL_SWAP_NONE \|
	GT64260_PCI_ACC_CNTL_MBURST_32_BTYES;
	si.pci_0.snoop_options[i] = GT64260_PCI_SNOOP_WB;
	si.pci_1.acc_cntl_options[i] =
	GT64260_PCI_ACC_CNTL_DREADEN \|
	GT64260_PCI_ACC_CNTL_RDPREFETCH \|
	GT64260_PCI_ACC_CNTL_RDLINEPREFETCH \|
	GT64260_PCI_ACC_CNTL_RDMULPREFETCH \|
	GT64260_PCI_ACC_CNTL_SWAP_NONE \|
	GT64260_PCI_ACC_CNTL_MBURST_32_BTYES;
	si.pci_1.snoop_options[i] = GT64260_PCI_SNOOP_WB;
	}

	/* Lookup PCI host bridges */
	if (mv64x60_init(&bh, &si))
	printk(KERN_ERR "Bridge initialization failed.\n");

	pci_dram_offset = 0; /* System mem at same addr on PCI & cpu bus */
	ppc_md.pci_swizzle = common_swizzle;
	ppc_md.pci_map_irq = cpci690_map_irq;
	ppc_md.pci_exclude_device = mv64x60_pci_exclude_device;

	mv64x60_set_bus(&bh, 0, 0);
	bh.hose_a->first_busno = 0;
	bh.hose_a->last_busno = 0xff;
	bh.hose_a->last_busno = pciauto_bus_scan(bh.hose_a, 0);

	bh.hose_b->first_busno = bh.hose_a->last_busno + 1;
	mv64x60_set_bus(&bh, 1, bh.hose_b->first_busno);
	bh.hose_b->last_busno = 0xff;
	bh.hose_b->last_busno = pciauto_bus_scan(bh.hose_b,
	bh.hose_b->first_busno);
	}

	static void __init
	cpci690_setup_peripherals(void)
	{
	/* Set up windows to CPLD, RTC/TODC, IPMI. */
	mv64x60_set_32bit_window(&bh, MV64x60_CPU2DEV_0_WIN, CPCI690_BR_BASE,
	CPCI690_BR_SIZE, 0);
	bh.ci->enable_window_32bit(&bh, MV64x60_CPU2DEV_0_WIN);
	cpci690_br_base = ioremap(CPCI690_BR_BASE, CPCI690_BR_SIZE);

	mv64x60_set_32bit_window(&bh, MV64x60_CPU2DEV_1_WIN, CPCI690_TODC_BASE,
	CPCI690_TODC_SIZE, 0);
	bh.ci->enable_window_32bit(&bh, MV64x60_CPU2DEV_1_WIN);
	TODC_INIT(TODC_TYPE_MK48T35, 0, 0,
	ioremap(CPCI690_TODC_BASE, CPCI690_TODC_SIZE), 8);

	mv64x60_set_32bit_window(&bh, MV64x60_CPU2DEV_2_WIN, CPCI690_IPMI_BASE,
	CPCI690_IPMI_SIZE, 0);
	bh.ci->enable_window_32bit(&bh, MV64x60_CPU2DEV_2_WIN);

	mv64x60_set_bits(&bh, MV64x60_PCI0_ARBITER_CNTL, (1<<31));
	mv64x60_set_bits(&bh, MV64x60_PCI1_ARBITER_CNTL, (1<<31));

	mv64x60_set_bits(&bh, MV64x60_CPU_MASTER_CNTL, (1<<9)); /* Only 1 cpu */

	/*
	* Turn off timer/counters. Not turning off watchdog timer because
	* can't read its reg on the 64260A so don't know if we'll be enabling
	* or disabling.
	*/
	mv64x60_clr_bits(&bh, MV64x60_TIMR_CNTR_0_3_CNTL,
	((1<<0) \| (1<<8) \| (1<<16) \| (1<<24)));
	mv64x60_clr_bits(&bh, GT64260_TIMR_CNTR_4_7_CNTL,
	((1<<0) \| (1<<8) \| (1<<16) \| (1<<24)));

	/*
	* Set MPSC Multiplex RMII
	* NOTE: ethernet driver modifies bit 0 and 1
	*/
	mv64x60_write(&bh, GT64260_MPP_SERIAL_PORTS_MULTIPLEX, 0x00001102);

	#define GPP_EXTERNAL_INTERRUPTS \
	((1<<24) \| (1<<25) \| (1<<26) \| (1<<27) \| \
	(1<<28) \| (1<<29) \| (1<<30) \| (1<<31))
	/* PCI interrupts are inputs */
	mv64x60_clr_bits(&bh, MV64x60_GPP_IO_CNTL, GPP_EXTERNAL_INTERRUPTS);
	/* PCI interrupts are active low */
	mv64x60_set_bits(&bh, MV64x60_GPP_LEVEL_CNTL, GPP_EXTERNAL_INTERRUPTS);

	/* Clear any pending interrupts for these inputs and enable them. */
	mv64x60_write(&bh, MV64x60_GPP_INTR_CAUSE, ~GPP_EXTERNAL_INTERRUPTS);
	mv64x60_set_bits(&bh, MV64x60_GPP_INTR_MASK, GPP_EXTERNAL_INTERRUPTS);

	/* Route MPP interrupt inputs to GPP */
	mv64x60_write(&bh, MV64x60_MPP_CNTL_2, 0x00000000);
	mv64x60_write(&bh, MV64x60_MPP_CNTL_3, 0x00000000);
	}

	static void __init
	cpci690_setup_arch(void)
	{
	if (ppc_md.progress)
	ppc_md.progress("cpci690_setup_arch: enter", 0);
	#ifdef CONFIG_BLK_DEV_INITRD
	if (initrd_start)
	ROOT_DEV = Root_RAM0;
	else
	#endif
	#ifdef CONFIG_ROOT_NFS
	ROOT_DEV = Root_NFS;
	#else
	ROOT_DEV = Root_SDA2;
	#endif

	if (ppc_md.progress)
	ppc_md.progress("cpci690_setup_arch: Enabling L2 cache", 0);

	/* Enable L2 and L3 caches (if 745x) */
	_set_L2CR(_get_L2CR() \| L2CR_L2E);
	_set_L3CR(_get_L3CR() \| L3CR_L3E);

	if (ppc_md.progress)
	ppc_md.progress("cpci690_setup_arch: Initializing bridge", 0);

	cpci690_setup_bridge(); /* set up PCI bridge(s) */
	cpci690_setup_peripherals(); /* set up chip selects/GPP/MPP etc */

	if (ppc_md.progress)
	ppc_md.progress("cpci690_setup_arch: bridge init complete", 0);

	printk(KERN_INFO "%s %s port (C) 2003 MontaVista Software, Inc. "
	"(source@mvista.com)\n", BOARD_VENDOR, BOARD_MACHINE);

	if (ppc_md.progress)
	ppc_md.progress("cpci690_setup_arch: exit", 0);
	}

	/* Platform device data fixup routines. */
	#if defined(CONFIG_SERIAL_MPSC)
	static void __init
	cpci690_fixup_mpsc_pdata(struct platform_device *pdev)
	{
	struct mpsc_pdata *pdata;

	pdata = (struct mpsc_pdata *)pdev->dev.platform_data;

	pdata->max_idle = 40;
	pdata->default_baud = CPCI690_MPSC_BAUD;
	pdata->brg_clk_src = CPCI690_MPSC_CLK_SRC;
	pdata->brg_clk_freq = cpci690_get_bus_freq();
	}

	static int
	cpci690_platform_notify(struct device *dev)
	{
	static struct {
	char *bus_id;
	void ((rtn)(struct platform_device pdev));
	} dev_map[] = {
	{ MPSC_CTLR_NAME ".0", cpci690_fixup_mpsc_pdata },
	{ MPSC_CTLR_NAME ".1", cpci690_fixup_mpsc_pdata },
	};
	struct platform_device *pdev;
	int i;

	if (dev && dev->bus_id)
	for (i=0; i<ARRAY_SIZE(dev_map); i++)
	if (!strncmp(dev->bus_id, dev_map[i].bus_id,
	BUS_ID_SIZE)) {

	pdev = container_of(dev,
	struct platform_device, dev);
	dev_map[i].rtn(pdev);
	}

	return 0;
	}
	#endif

	static void
	cpci690_reset_board(void)
	{
	u32 i = 10000;

	local_irq_disable();
	out_8((cpci690_br_base + CPCI690_BR_SW_RESET), 0x11);

	while (i != 0) i++;
	panic("restart failed\n");
	}

	static void
	cpci690_restart(char *cmd)
	{
	cpci690_reset_board();
	}

	static void
	cpci690_halt(void)
	{
	while (1);
	/* NOTREACHED */
	}

	static void
	cpci690_power_off(void)
	{
	cpci690_halt();
	/* NOTREACHED */
	}

	static int
	cpci690_show_cpuinfo(struct seq_file *m)
	{
	char *s;

	seq_printf(m, "cpu MHz\t\t: %d\n",
	(cpci690_get_cpu_freq() + 500000) / 1000000);
	seq_printf(m, "bus MHz\t\t: %d\n",
	(cpci690_get_bus_freq() + 500000) / 1000000);
	seq_printf(m, "vendor\t\t: " BOARD_VENDOR "\n");
	seq_printf(m, "machine\t\t: " BOARD_MACHINE "\n");
	seq_printf(m, "FPGA Revision\t: %d\n",
	in_8(cpci690_br_base + CPCI690_BR_MEM_CTLR) >> 5);

	switch(bh.type) {
	case MV64x60_TYPE_GT64260A:
	s = "gt64260a";
	break;
	case MV64x60_TYPE_GT64260B:
	s = "gt64260b";
	break;
	case MV64x60_TYPE_MV64360:
	s = "mv64360";
	break;
	case MV64x60_TYPE_MV64460:
	s = "mv64460";
	break;
	default:
	s = "Unknown";
	}
	seq_printf(m, "bridge type\t: %s\n", s);
	seq_printf(m, "bridge rev\t: 0x%x\n", bh.rev);
	#if defined(CONFIG_NOT_COHERENT_CACHE)
	seq_printf(m, "coherency\t: %s\n", "off");
	#else
	seq_printf(m, "coherency\t: %s\n", "on");
	#endif

	return 0;
	}

	static void __init
	cpci690_calibrate_decr(void)
	{
	ulong freq;

	freq = cpci690_get_bus_freq() / 4;

	printk(KERN_INFO "time_init: decrementer frequency = %lu.%.6lu MHz\n",
	freq/1000000, freq%1000000);

	tb_ticks_per_jiffy = freq / HZ;
	tb_to_us = mulhwu_scale_factor(freq, 1000000);
	}

	#if defined(CONFIG_SERIAL_TEXT_DEBUG) \|\| defined(CONFIG_KGDB_MPSC)
	static void __init
	cpci690_map_io(void)
	{
	io_block_mapping(CONFIG_MV64X60_NEW_BASE, CONFIG_MV64X60_NEW_BASE,
	128 * 1024, _PAGE_IO);
	}
	#endif

	void __init
	platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
	unsigned long r6, unsigned long r7)
	{
	parse_bootinfo(find_bootinfo());

	#ifdef CONFIG_BLK_DEV_INITRD
	/* take care of initrd if we have one */
	if (r4) {
	initrd_start = r4 + KERNELBASE;
	initrd_end = r5 + KERNELBASE;
	}
	#endif /* CONFIG_BLK_DEV_INITRD */

	isa_mem_base = 0;

	ppc_md.setup_arch = cpci690_setup_arch;
	ppc_md.show_cpuinfo = cpci690_show_cpuinfo;
	ppc_md.init_IRQ = gt64260_init_irq;
	ppc_md.get_irq = gt64260_get_irq;
	ppc_md.restart = cpci690_restart;
	ppc_md.power_off = cpci690_power_off;
	ppc_md.halt = cpci690_halt;
	ppc_md.time_init = todc_time_init;
	ppc_md.set_rtc_time = todc_set_rtc_time;
	ppc_md.get_rtc_time = todc_get_rtc_time;
	ppc_md.nvram_read_val = todc_direct_read_val;
	ppc_md.nvram_write_val = todc_direct_write_val;
	ppc_md.calibrate_decr = cpci690_calibrate_decr;

	#if defined(CONFIG_SERIAL_TEXT_DEBUG) \|\| defined(CONFIG_KGDB_MPSC)
	ppc_md.setup_io_mappings = cpci690_map_io;
	#ifdef CONFIG_SERIAL_TEXT_DEBUG
	ppc_md.progress = mv64x60_mpsc_progress;
	mv64x60_progress_init(CONFIG_MV64X60_NEW_BASE);
	#endif /* CONFIG_SERIAL_TEXT_DEBUG */
	#endif /* defined(CONFIG_SERIAL_TEXT_DEBUG) \|\| defined(CONFIG_KGDB_MPSC) */

	#if defined(CONFIG_SERIAL_MPSC)
	platform_notify = cpci690_platform_notify;
	#endif
	}