arch/powerpc/platforms/85xx/mpc85xx_ads.c - maze/linux - Git at Google

 /*
  * MPC85xx setup and early boot code plus other random bits.
  *
  * Maintained by Kumar Gala (see MAINTAINERS for contact information)
  *
  * Copyright 2005 Freescale Semiconductor Inc.
  *
  * 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.
  */

 #include <linux/stddef.h>
 #include <linux/kernel.h>
 #include <linux/pci.h>
 #include <linux/kdev_t.h>
 #include <linux/delay.h>
 #include <linux/seq_file.h>
 #include <linux/root_dev.h>

 #include <asm/system.h>
 #include <asm/time.h>
 #include <asm/machdep.h>
 #include <asm/pci-bridge.h>
 #include <asm/mpc85xx.h>
 #include <asm/prom.h>
 #include <asm/mpic.h>
 #include <mm/mmu_decl.h>
 #include <asm/udbg.h>

 #include <sysdev/fsl_soc.h>
 #include "mpc85xx.h"

 #ifdef CONFIG_CPM2
 #include <linux/fs_enet_pd.h>
 #include <asm/cpm2.h>
 #include <sysdev/cpm2_pic.h>
 #include <asm/fs_pd.h>
 #endif

 #ifndef CONFIG_PCI
 unsigned long isa_io_base = 0;
 unsigned long isa_mem_base = 0;
 #endif

 #ifdef CONFIG_PCI
 int
 mpc85xx_exclude_device(u_char bus, u_char devfn)
 {
 	if (bus == 0 && PCI_SLOT(devfn) == 0)
 		return PCIBIOS_DEVICE_NOT_FOUND;
 	else
 		return PCIBIOS_SUCCESSFUL;
 }

 void __init
 mpc85xx_pcibios_fixup(void)
 {
 	struct pci_dev *dev = NULL;

 	for_each_pci_dev(dev)
 		pci_read_irq_line(dev);
 }
 #endif /* CONFIG_PCI */

 #ifdef CONFIG_CPM2

 static void cpm2_cascade(unsigned int irq, struct irq_desc *desc)
 {
 	int cascade_irq;

 	while ((cascade_irq = cpm2_get_irq()) >= 0) {
 		generic_handle_irq(cascade_irq);
 	}
 	desc->chip->eoi(irq);
 }

 #endif /* CONFIG_CPM2 */

 void __init mpc85xx_ads_pic_init(void)
 {
 	struct mpic *mpic;
 	struct resource r;
 	struct device_node *np = NULL;
 #ifdef CONFIG_CPM2
 	int irq;
 #endif

 	np = of_find_node_by_type(np, "open-pic");

 	if (np == NULL) {
 		printk(KERN_ERR "Could not find open-pic node\n");
 		return;
 	}

 	if(of_address_to_resource(np, 0, &r)) {
 		printk(KERN_ERR "Could not map mpic register space\n");
 		of_node_put(np);
 		return;
 	}

 	mpic = mpic_alloc(np, r.start,
 			MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
 			4, 0, " OpenPIC  ");
 	BUG_ON(mpic == NULL);
 	of_node_put(np);

 	mpic_assign_isu(mpic, 0, r.start + 0x10200);
 	mpic_assign_isu(mpic, 1, r.start + 0x10280);
 	mpic_assign_isu(mpic, 2, r.start + 0x10300);
 	mpic_assign_isu(mpic, 3, r.start + 0x10380);
 	mpic_assign_isu(mpic, 4, r.start + 0x10400);
 	mpic_assign_isu(mpic, 5, r.start + 0x10480);
 	mpic_assign_isu(mpic, 6, r.start + 0x10500);
 	mpic_assign_isu(mpic, 7, r.start + 0x10580);

 	/* Unused on this platform (leave room for 8548) */
 	mpic_assign_isu(mpic, 8, r.start + 0x10600);
 	mpic_assign_isu(mpic, 9, r.start + 0x10680);
 	mpic_assign_isu(mpic, 10, r.start + 0x10700);
 	mpic_assign_isu(mpic, 11, r.start + 0x10780);

 	/* External Interrupts */
 	mpic_assign_isu(mpic, 12, r.start + 0x10000);
 	mpic_assign_isu(mpic, 13, r.start + 0x10080);
 	mpic_assign_isu(mpic, 14, r.start + 0x10100);

 	mpic_init(mpic);

 #ifdef CONFIG_CPM2
 	/* Setup CPM2 PIC */
 	np = of_find_node_by_type(NULL, "cpm-pic");
 	if (np == NULL) {
 		printk(KERN_ERR "PIC init: can not find cpm-pic node\n");
                 return;
 	}
 	irq = irq_of_parse_and_map(np, 0);

 	cpm2_pic_init(np);
 	set_irq_chained_handler(irq, cpm2_cascade);
 #endif
 }

 /*
  * Setup the architecture
  */
 #ifdef CONFIG_CPM2
 void init_fcc_ioports(struct fs_platform_info *fpi)
 {
 	struct io_port *io = cpm2_map(im_ioport);
 	int fcc_no = fs_get_fcc_index(fpi->fs_no);
 	int target;
 	u32 tempval;

 	switch(fcc_no) {
 	case 1:
 		tempval = in_be32(&io->iop_pdirb);
 		tempval &= ~PB2_DIRB0;
 		tempval |= PB2_DIRB1;
 		out_be32(&io->iop_pdirb, tempval);

 		tempval = in_be32(&io->iop_psorb);
 		tempval &= ~PB2_PSORB0;
 		tempval |= PB2_PSORB1;
 		out_be32(&io->iop_psorb, tempval);

 		tempval = in_be32(&io->iop_pparb);
 		tempval |= (PB2_DIRB0 | PB2_DIRB1);
 		out_be32(&io->iop_pparb, tempval);

 		target = CPM_CLK_FCC2;
 		break;
 	case 2:
 		tempval = in_be32(&io->iop_pdirb);
 		tempval &= ~PB3_DIRB0;
 		tempval |= PB3_DIRB1;
 		out_be32(&io->iop_pdirb, tempval);

 		tempval = in_be32(&io->iop_psorb);
 		tempval &= ~PB3_PSORB0;
 		tempval |= PB3_PSORB1;
 		out_be32(&io->iop_psorb, tempval);

 		tempval = in_be32(&io->iop_pparb);
 		tempval |= (PB3_DIRB0 | PB3_DIRB1);
 		out_be32(&io->iop_pparb, tempval);

 		tempval = in_be32(&io->iop_pdirc);
 		tempval |= PC3_DIRC1;
 		out_be32(&io->iop_pdirc, tempval);

 		tempval = in_be32(&io->iop_pparc);
 		tempval |= PC3_DIRC1;
 		out_be32(&io->iop_pparc, tempval);

 		target = CPM_CLK_FCC3;
 		break;
 	default:
 		printk(KERN_ERR "init_fcc_ioports: invalid FCC number\n");
 		return;
 	}

 	/* Port C has clocks......  */
 	tempval = in_be32(&io->iop_psorc);
 	tempval &= ~(PC_CLK(fpi->clk_rx - 8) | PC_CLK(fpi->clk_tx - 8));
 	out_be32(&io->iop_psorc, tempval);

 	tempval = in_be32(&io->iop_pdirc);
 	tempval &= ~(PC_CLK(fpi->clk_rx - 8) | PC_CLK(fpi->clk_tx - 8));
 	out_be32(&io->iop_pdirc, tempval);
 	tempval = in_be32(&io->iop_pparc);
 	tempval |= (PC_CLK(fpi->clk_rx - 8) | PC_CLK(fpi->clk_tx - 8));
 	out_be32(&io->iop_pparc, tempval);

 	cpm2_unmap(io);

 	/* Configure Serial Interface clock routing.
 	 * First,  clear FCC bits to zero,
 	 * then set the ones we want.
 	 */
 	cpm2_clk_setup(target, fpi->clk_rx, CPM_CLK_RX);
 	cpm2_clk_setup(target, fpi->clk_tx, CPM_CLK_TX);
 }
 #endif

 static void __init mpc85xx_ads_setup_arch(void)
 {
 	struct device_node *cpu;
 #ifdef CONFIG_PCI
 	struct device_node *np;
 #endif

 	if (ppc_md.progress)
 		ppc_md.progress("mpc85xx_ads_setup_arch()", 0);

 	cpu = of_find_node_by_type(NULL, "cpu");
 	if (cpu != 0) {
 		const unsigned int *fp;

 		fp = get_property(cpu, "clock-frequency", NULL);
 		if (fp != 0)
 			loops_per_jiffy = *fp / HZ;
 		else
 			loops_per_jiffy = 50000000 / HZ;
 		of_node_put(cpu);
 	}

 #ifdef CONFIG_CPM2
 	cpm2_reset();
 #endif

 #ifdef CONFIG_PCI
 	for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
 		add_bridge(np);

 	ppc_md.pcibios_fixup = mpc85xx_pcibios_fixup;
 	ppc_md.pci_exclude_device = mpc85xx_exclude_device;
 #endif

 #ifdef  CONFIG_ROOT_NFS
 	ROOT_DEV = Root_NFS;
 #else
 	ROOT_DEV = Root_HDA1;
 #endif
 }

 void mpc85xx_ads_show_cpuinfo(struct seq_file *m)
 {
 	uint pvid, svid, phid1;
 	uint memsize = total_memory;

 	pvid = mfspr(SPRN_PVR);
 	svid = mfspr(SPRN_SVR);

 	seq_printf(m, "Vendor\t\t: Freescale Semiconductor\n");
 	seq_printf(m, "Machine\t\t: mpc85xx\n");
 	seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
 	seq_printf(m, "SVR\t\t: 0x%x\n", svid);

 	/* Display cpu Pll setting */
 	phid1 = mfspr(SPRN_HID1);
 	seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));

 	/* Display the amount of memory */
 	seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
 }

 /*
  * Called very early, device-tree isn't unflattened
  */
 static int __init mpc85xx_ads_probe(void)
 {
 	/* We always match for now, eventually we should look at the flat
 	   dev tree to ensure this is the board we are suppose to run on
 	*/
 	return 1;
 }

 define_machine(mpc85xx_ads) {
 	.name			= "MPC85xx ADS",
 	.probe			= mpc85xx_ads_probe,
 	.setup_arch		= mpc85xx_ads_setup_arch,
 	.init_IRQ		= mpc85xx_ads_pic_init,
 	.show_cpuinfo		= mpc85xx_ads_show_cpuinfo,
 	.get_irq		= mpic_get_irq,
 	.restart		= mpc85xx_restart,
 	.calibrate_decr		= generic_calibrate_decr,
 	.progress		= udbg_progress,
 };
	/*
	* MPC85xx setup and early boot code plus other random bits.
	*
	* Maintained by Kumar Gala (see MAINTAINERS for contact information)
	*
	* Copyright 2005 Freescale Semiconductor Inc.
	*
	* 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.
	*/

	#include <linux/stddef.h>
	#include <linux/kernel.h>
	#include <linux/pci.h>
	#include <linux/kdev_t.h>
	#include <linux/delay.h>
	#include <linux/seq_file.h>
	#include <linux/root_dev.h>

	#include <asm/system.h>
	#include <asm/time.h>
	#include <asm/machdep.h>
	#include <asm/pci-bridge.h>
	#include <asm/mpc85xx.h>
	#include <asm/prom.h>
	#include <asm/mpic.h>
	#include <mm/mmu_decl.h>
	#include <asm/udbg.h>

	#include <sysdev/fsl_soc.h>
	#include "mpc85xx.h"

	#ifdef CONFIG_CPM2
	#include <linux/fs_enet_pd.h>
	#include <asm/cpm2.h>
	#include <sysdev/cpm2_pic.h>
	#include <asm/fs_pd.h>
	#endif

	#ifndef CONFIG_PCI
	unsigned long isa_io_base = 0;
	unsigned long isa_mem_base = 0;
	#endif

	#ifdef CONFIG_PCI
	int
	mpc85xx_exclude_device(u_char bus, u_char devfn)
	{
	if (bus == 0 && PCI_SLOT(devfn) == 0)
	return PCIBIOS_DEVICE_NOT_FOUND;
	else
	return PCIBIOS_SUCCESSFUL;
	}

	void __init
	mpc85xx_pcibios_fixup(void)
	{
	struct pci_dev *dev = NULL;

	for_each_pci_dev(dev)
	pci_read_irq_line(dev);
	}
	#endif /* CONFIG_PCI */

	#ifdef CONFIG_CPM2

	static void cpm2_cascade(unsigned int irq, struct irq_desc *desc)
	{
	int cascade_irq;

	while ((cascade_irq = cpm2_get_irq()) >= 0) {
	generic_handle_irq(cascade_irq);
	}
	desc->chip->eoi(irq);
	}

	#endif /* CONFIG_CPM2 */

	void __init mpc85xx_ads_pic_init(void)
	{
	struct mpic *mpic;
	struct resource r;
	struct device_node *np = NULL;
	#ifdef CONFIG_CPM2
	int irq;
	#endif

	np = of_find_node_by_type(np, "open-pic");

	if (np == NULL) {
	printk(KERN_ERR "Could not find open-pic node\n");
	return;
	}

	if(of_address_to_resource(np, 0, &r)) {
	printk(KERN_ERR "Could not map mpic register space\n");
	of_node_put(np);
	return;
	}

	mpic = mpic_alloc(np, r.start,
	MPIC_PRIMARY \| MPIC_WANTS_RESET \| MPIC_BIG_ENDIAN,
	4, 0, " OpenPIC ");
	BUG_ON(mpic == NULL);
	of_node_put(np);

	mpic_assign_isu(mpic, 0, r.start + 0x10200);
	mpic_assign_isu(mpic, 1, r.start + 0x10280);
	mpic_assign_isu(mpic, 2, r.start + 0x10300);
	mpic_assign_isu(mpic, 3, r.start + 0x10380);
	mpic_assign_isu(mpic, 4, r.start + 0x10400);
	mpic_assign_isu(mpic, 5, r.start + 0x10480);
	mpic_assign_isu(mpic, 6, r.start + 0x10500);
	mpic_assign_isu(mpic, 7, r.start + 0x10580);

	/* Unused on this platform (leave room for 8548) */
	mpic_assign_isu(mpic, 8, r.start + 0x10600);
	mpic_assign_isu(mpic, 9, r.start + 0x10680);
	mpic_assign_isu(mpic, 10, r.start + 0x10700);
	mpic_assign_isu(mpic, 11, r.start + 0x10780);

	/* External Interrupts */
	mpic_assign_isu(mpic, 12, r.start + 0x10000);
	mpic_assign_isu(mpic, 13, r.start + 0x10080);
	mpic_assign_isu(mpic, 14, r.start + 0x10100);

	mpic_init(mpic);

	#ifdef CONFIG_CPM2
	/* Setup CPM2 PIC */
	np = of_find_node_by_type(NULL, "cpm-pic");
	if (np == NULL) {
	printk(KERN_ERR "PIC init: can not find cpm-pic node\n");
	return;
	}
	irq = irq_of_parse_and_map(np, 0);

	cpm2_pic_init(np);
	set_irq_chained_handler(irq, cpm2_cascade);
	#endif
	}

	/*
	* Setup the architecture
	*/
	#ifdef CONFIG_CPM2
	void init_fcc_ioports(struct fs_platform_info *fpi)
	{
	struct io_port *io = cpm2_map(im_ioport);
	int fcc_no = fs_get_fcc_index(fpi->fs_no);
	int target;
	u32 tempval;

	switch(fcc_no) {
	case 1:
	tempval = in_be32(&io->iop_pdirb);
	tempval &= ~PB2_DIRB0;
	tempval \|= PB2_DIRB1;
	out_be32(&io->iop_pdirb, tempval);

	tempval = in_be32(&io->iop_psorb);
	tempval &= ~PB2_PSORB0;
	tempval \|= PB2_PSORB1;
	out_be32(&io->iop_psorb, tempval);

	tempval = in_be32(&io->iop_pparb);
	tempval \|= (PB2_DIRB0 \| PB2_DIRB1);
	out_be32(&io->iop_pparb, tempval);

	target = CPM_CLK_FCC2;
	break;
	case 2:
	tempval = in_be32(&io->iop_pdirb);
	tempval &= ~PB3_DIRB0;
	tempval \|= PB3_DIRB1;
	out_be32(&io->iop_pdirb, tempval);

	tempval = in_be32(&io->iop_psorb);
	tempval &= ~PB3_PSORB0;
	tempval \|= PB3_PSORB1;
	out_be32(&io->iop_psorb, tempval);

	tempval = in_be32(&io->iop_pparb);
	tempval \|= (PB3_DIRB0 \| PB3_DIRB1);
	out_be32(&io->iop_pparb, tempval);

	tempval = in_be32(&io->iop_pdirc);
	tempval \|= PC3_DIRC1;
	out_be32(&io->iop_pdirc, tempval);

	tempval = in_be32(&io->iop_pparc);
	tempval \|= PC3_DIRC1;
	out_be32(&io->iop_pparc, tempval);

	target = CPM_CLK_FCC3;
	break;
	default:
	printk(KERN_ERR "init_fcc_ioports: invalid FCC number\n");
	return;
	}

	/* Port C has clocks...... */
	tempval = in_be32(&io->iop_psorc);
	tempval &= ~(PC_CLK(fpi->clk_rx - 8) \| PC_CLK(fpi->clk_tx - 8));
	out_be32(&io->iop_psorc, tempval);

	tempval = in_be32(&io->iop_pdirc);
	tempval &= ~(PC_CLK(fpi->clk_rx - 8) \| PC_CLK(fpi->clk_tx - 8));
	out_be32(&io->iop_pdirc, tempval);
	tempval = in_be32(&io->iop_pparc);
	tempval \|= (PC_CLK(fpi->clk_rx - 8) \| PC_CLK(fpi->clk_tx - 8));
	out_be32(&io->iop_pparc, tempval);

	cpm2_unmap(io);

	/* Configure Serial Interface clock routing.
	* First, clear FCC bits to zero,
	* then set the ones we want.
	*/
	cpm2_clk_setup(target, fpi->clk_rx, CPM_CLK_RX);
	cpm2_clk_setup(target, fpi->clk_tx, CPM_CLK_TX);
	}
	#endif

	static void __init mpc85xx_ads_setup_arch(void)
	{
	struct device_node *cpu;
	#ifdef CONFIG_PCI
	struct device_node *np;
	#endif

	if (ppc_md.progress)
	ppc_md.progress("mpc85xx_ads_setup_arch()", 0);

	cpu = of_find_node_by_type(NULL, "cpu");
	if (cpu != 0) {
	const unsigned int *fp;

	fp = get_property(cpu, "clock-frequency", NULL);
	if (fp != 0)
	loops_per_jiffy = *fp / HZ;
	else
	loops_per_jiffy = 50000000 / HZ;
	of_node_put(cpu);
	}

	#ifdef CONFIG_CPM2
	cpm2_reset();
	#endif

	#ifdef CONFIG_PCI
	for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
	add_bridge(np);

	ppc_md.pcibios_fixup = mpc85xx_pcibios_fixup;
	ppc_md.pci_exclude_device = mpc85xx_exclude_device;
	#endif

	#ifdef CONFIG_ROOT_NFS
	ROOT_DEV = Root_NFS;
	#else
	ROOT_DEV = Root_HDA1;
	#endif
	}

	void mpc85xx_ads_show_cpuinfo(struct seq_file *m)
	{
	uint pvid, svid, phid1;
	uint memsize = total_memory;

	pvid = mfspr(SPRN_PVR);
	svid = mfspr(SPRN_SVR);

	seq_printf(m, "Vendor\t\t: Freescale Semiconductor\n");
	seq_printf(m, "Machine\t\t: mpc85xx\n");
	seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
	seq_printf(m, "SVR\t\t: 0x%x\n", svid);

	/* Display cpu Pll setting */
	phid1 = mfspr(SPRN_HID1);
	seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));

	/* Display the amount of memory */
	seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
	}

	/*
	* Called very early, device-tree isn't unflattened
	*/
	static int __init mpc85xx_ads_probe(void)
	{
	/* We always match for now, eventually we should look at the flat
	dev tree to ensure this is the board we are suppose to run on
	*/
	return 1;
	}

	define_machine(mpc85xx_ads) {
	.name = "MPC85xx ADS",
	.probe = mpc85xx_ads_probe,
	.setup_arch = mpc85xx_ads_setup_arch,
	.init_IRQ = mpc85xx_ads_pic_init,
	.show_cpuinfo = mpc85xx_ads_show_cpuinfo,
	.get_irq = mpic_get_irq,
	.restart = mpc85xx_restart,
	.calibrate_decr = generic_calibrate_decr,
	.progress = udbg_progress,
	};