+++ /dev/null
-/*
- * Ebony board specific routines
- *
- * Matt Porter <mporter@kernel.crashing.org>
- * Copyright 2002-2005 MontaVista Software Inc.
- *
- * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
- * Copyright (c) 2003-2005 Zultys Technologies
- *
- * 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/init.h>
-#include <linux/errno.h>
-#include <linux/reboot.h>
-#include <linux/pci.h>
-#include <linux/kdev_t.h>
-#include <linux/types.h>
-#include <linux/major.h>
-#include <linux/blkdev.h>
-#include <linux/console.h>
-#include <linux/delay.h>
-#include <linux/initrd.h>
-#include <linux/seq_file.h>
-#include <linux/root_dev.h>
-#include <linux/tty.h>
-#include <linux/serial.h>
-#include <linux/serial_core.h>
-#include <linux/serial_8250.h>
-
-#include <asm/system.h>
-#include <asm/pgtable.h>
-#include <asm/page.h>
-#include <asm/dma.h>
-#include <asm/io.h>
-#include <asm/machdep.h>
-#include <asm/ocp.h>
-#include <asm/pci-bridge.h>
-#include <asm/time.h>
-#include <asm/todc.h>
-#include <asm/bootinfo.h>
-#include <asm/ppc4xx_pic.h>
-#include <asm/ppcboot.h>
-#include <asm/tlbflush.h>
-
-#include <syslib/gen550.h>
-#include <syslib/ibm440gp_common.h>
-
-extern bd_t __res;
-
-static struct ibm44x_clocks clocks __initdata;
-
-/*
- * Ebony external IRQ triggering/polarity settings
- */
-unsigned char ppc4xx_uic_ext_irq_cfg[] __initdata = {
- (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ0: PCI slot 0 */
- (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ1: PCI slot 1 */
- (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ2: PCI slot 2 */
- (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ3: PCI slot 3 */
- (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* IRQ4: IRDA */
- (IRQ_SENSE_EDGE | IRQ_POLARITY_NEGATIVE), /* IRQ5: SMI pushbutton */
- (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ6: PHYs */
- (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* IRQ7: AUX */
- (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ8: EXT */
- (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ9: EXT */
- (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ10: EXT */
- (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ11: EXT */
- (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* IRQ12: EXT */
-};
-
-static void __init
-ebony_calibrate_decr(void)
-{
- unsigned int freq;
-
- /*
- * Determine system clock speed
- *
- * If we are on Rev. B silicon, then use
- * default external system clock. If we are
- * on Rev. C silicon then errata forces us to
- * use the internal clock.
- */
- if (strcmp(cur_cpu_spec->cpu_name, "440GP Rev. B") == 0)
- freq = EBONY_440GP_RB_SYSCLK;
- else
- freq = EBONY_440GP_RC_SYSCLK;
-
- ibm44x_calibrate_decr(freq);
-}
-
-static int
-ebony_show_cpuinfo(struct seq_file *m)
-{
- seq_printf(m, "vendor\t\t: IBM\n");
- seq_printf(m, "machine\t\t: Ebony\n");
-
- return 0;
-}
-
-static inline int
-ebony_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
-{
- static char pci_irq_table[][4] =
- /*
- * PCI IDSEL/INTPIN->INTLINE
- * A B C D
- */
- {
- { 23, 23, 23, 23 }, /* IDSEL 1 - PCI Slot 0 */
- { 24, 24, 24, 24 }, /* IDSEL 2 - PCI Slot 1 */
- { 25, 25, 25, 25 }, /* IDSEL 3 - PCI Slot 2 */
- { 26, 26, 26, 26 }, /* IDSEL 4 - PCI Slot 3 */
- };
-
- const long min_idsel = 1, max_idsel = 4, irqs_per_slot = 4;
- return PCI_IRQ_TABLE_LOOKUP;
-}
-
-#define PCIX_WRITEL(value, offset) \
- (writel(value, pcix_reg_base + offset))
-
-/*
- * FIXME: This is only here to "make it work". This will move
- * to a ibm_pcix.c which will contain a generic IBM PCIX bridge
- * configuration library. -Matt
- */
-static void __init
-ebony_setup_pcix(void)
-{
- void __iomem *pcix_reg_base;
-
- pcix_reg_base = ioremap64(PCIX0_REG_BASE, PCIX_REG_SIZE);
-
- /* Disable all windows */
- PCIX_WRITEL(0, PCIX0_POM0SA);
- PCIX_WRITEL(0, PCIX0_POM1SA);
- PCIX_WRITEL(0, PCIX0_POM2SA);
- PCIX_WRITEL(0, PCIX0_PIM0SA);
- PCIX_WRITEL(0, PCIX0_PIM1SA);
- PCIX_WRITEL(0, PCIX0_PIM2SA);
-
- /* Setup 2GB PLB->PCI outbound mem window (3_8000_0000->0_8000_0000) */
- PCIX_WRITEL(0x00000003, PCIX0_POM0LAH);
- PCIX_WRITEL(0x80000000, PCIX0_POM0LAL);
- PCIX_WRITEL(0x00000000, PCIX0_POM0PCIAH);
- PCIX_WRITEL(0x80000000, PCIX0_POM0PCIAL);
- PCIX_WRITEL(0x80000001, PCIX0_POM0SA);
-
- /* Setup 2GB PCI->PLB inbound memory window at 0, enable MSIs */
- PCIX_WRITEL(0x00000000, PCIX0_PIM0LAH);
- PCIX_WRITEL(0x00000000, PCIX0_PIM0LAL);
- PCIX_WRITEL(0x80000007, PCIX0_PIM0SA);
-
- eieio();
-}
-
-static void __init
-ebony_setup_hose(void)
-{
- struct pci_controller *hose;
-
- /* Configure windows on the PCI-X host bridge */
- ebony_setup_pcix();
-
- hose = pcibios_alloc_controller();
-
- if (!hose)
- return;
-
- hose->first_busno = 0;
- hose->last_busno = 0xff;
-
- hose->pci_mem_offset = EBONY_PCI_MEM_OFFSET;
-
- pci_init_resource(&hose->io_resource,
- EBONY_PCI_LOWER_IO,
- EBONY_PCI_UPPER_IO,
- IORESOURCE_IO,
- "PCI host bridge");
-
- pci_init_resource(&hose->mem_resources[0],
- EBONY_PCI_LOWER_MEM,
- EBONY_PCI_UPPER_MEM,
- IORESOURCE_MEM,
- "PCI host bridge");
-
- hose->io_space.start = EBONY_PCI_LOWER_IO;
- hose->io_space.end = EBONY_PCI_UPPER_IO;
- hose->mem_space.start = EBONY_PCI_LOWER_MEM;
- hose->mem_space.end = EBONY_PCI_UPPER_MEM;
- hose->io_base_virt = ioremap64(EBONY_PCI_IO_BASE, EBONY_PCI_IO_SIZE);
- isa_io_base = (unsigned long)hose->io_base_virt;
-
- setup_indirect_pci(hose,
- EBONY_PCI_CFGA_PLB32,
- EBONY_PCI_CFGD_PLB32);
- hose->set_cfg_type = 1;
-
- hose->last_busno = pciauto_bus_scan(hose, hose->first_busno);
-
- ppc_md.pci_swizzle = common_swizzle;
- ppc_md.pci_map_irq = ebony_map_irq;
-}
-
-TODC_ALLOC();
-
-static void __init
-ebony_early_serial_map(void)
-{
- struct uart_port port;
-
- /* Setup ioremapped serial port access */
- memset(&port, 0, sizeof(port));
- port.membase = ioremap64(PPC440GP_UART0_ADDR, 8);
- port.irq = 0;
- port.uartclk = clocks.uart0;
- port.regshift = 0;
- port.iotype = UPIO_MEM;
- port.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST;
- port.line = 0;
-
- if (early_serial_setup(&port) != 0) {
- printk("Early serial init of port 0 failed\n");
- }
-
-#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
- /* Configure debug serial access */
- gen550_init(0, &port);
-
- /* Purge TLB entry added in head_44x.S for early serial access */
- _tlbie(UART0_IO_BASE, 0);
-#endif
-
- port.membase = ioremap64(PPC440GP_UART1_ADDR, 8);
- port.irq = 1;
- port.uartclk = clocks.uart1;
- port.line = 1;
-
- if (early_serial_setup(&port) != 0) {
- printk("Early serial init of port 1 failed\n");
- }
-
-#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
- /* Configure debug serial access */
- gen550_init(1, &port);
-#endif
-}
-
-static void __init
-ebony_setup_arch(void)
-{
- struct ocp_def *def;
- struct ocp_func_emac_data *emacdata;
-
- /* Set mac_addr for each EMAC */
- def = ocp_get_one_device(OCP_VENDOR_IBM, OCP_FUNC_EMAC, 0);
- emacdata = def->additions;
- emacdata->phy_map = 0x00000001; /* Skip 0x00 */
- emacdata->phy_mode = PHY_MODE_RMII;
- memcpy(emacdata->mac_addr, __res.bi_enetaddr, 6);
-
- def = ocp_get_one_device(OCP_VENDOR_IBM, OCP_FUNC_EMAC, 1);
- emacdata = def->additions;
- emacdata->phy_map = 0x00000001; /* Skip 0x00 */
- emacdata->phy_mode = PHY_MODE_RMII;
- memcpy(emacdata->mac_addr, __res.bi_enet1addr, 6);
-
- /*
- * Determine various clocks.
- * To be completely correct we should get SysClk
- * from FPGA, because it can be changed by on-board switches
- * --ebs
- */
- ibm440gp_get_clocks(&clocks, 33333333, 6 * 1843200);
- ocp_sys_info.opb_bus_freq = clocks.opb;
-
- /* Setup TODC access */
- TODC_INIT(TODC_TYPE_DS1743,
- 0,
- 0,
- ioremap64(EBONY_RTC_ADDR, EBONY_RTC_SIZE),
- 8);
-
- /* init to some ~sane value until calibrate_delay() runs */
- loops_per_jiffy = 50000000/HZ;
-
- /* Setup PCI host bridge */
- ebony_setup_hose();
-
-#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_HDA1;
-#endif
-
- ebony_early_serial_map();
-
- /* Identify the system */
- printk("IBM Ebony port (MontaVista Software, Inc. (source@mvista.com))\n");
-}
-
-void __init platform_init(unsigned long r3, unsigned long r4,
- unsigned long r5, unsigned long r6, unsigned long r7)
-{
- ibm44x_platform_init(r3, r4, r5, r6, r7);
-
- ppc_md.setup_arch = ebony_setup_arch;
- ppc_md.show_cpuinfo = ebony_show_cpuinfo;
- ppc_md.get_irq = NULL; /* Set in ppc4xx_pic_init() */
-
- ppc_md.calibrate_decr = ebony_calibrate_decr;
- 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;
-#ifdef CONFIG_KGDB
- ppc_md.early_serial_map = ebony_early_serial_map;
-#endif
-}
-
git.samba.org / sfrench / cifs-2.6.git / blobdiff