+++ /dev/null
-/*
- * Luan board specific routines
- *
- * Matt Porter <mporter@kernel.crashing.org>
- *
- * Copyright 2004-2005 MontaVista Software 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/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 <syslib/ibm44x_common.h>
-#include <syslib/ibm440gx_common.h>
-#include <syslib/ibm440sp_common.h>
-
-extern bd_t __res;
-
-static struct ibm44x_clocks clocks __initdata;
-
-static void __init
-luan_calibrate_decr(void)
-{
- unsigned int freq;
-
- if (mfspr(SPRN_CCR1) & CCR1_TCS)
- freq = LUAN_TMR_CLK;
- else
- freq = clocks.cpu;
-
- ibm44x_calibrate_decr(freq);
-}
-
-static int
-luan_show_cpuinfo(struct seq_file *m)
-{
- seq_printf(m, "vendor\t\t: IBM\n");
- seq_printf(m, "machine\t\t: PPC440SP EVB (Luan)\n");
-
- return 0;
-}
-
-static inline int
-luan_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
-{
- struct pci_controller *hose = pci_bus_to_hose(dev->bus->number);
-
- /* PCIX0 in adapter mode, no host interrupt routing */
-
- /* PCIX1 */
- if (hose->index == 0) {
- static char pci_irq_table[][4] =
- /*
- * PCI IDSEL/INTPIN->INTLINE
- * A B C D
- */
- {
- { 49, 49, 49, 49 }, /* IDSEL 1 - PCIX1 Slot 0 */
- { 49, 49, 49, 49 }, /* IDSEL 2 - PCIX1 Slot 1 */
- { 49, 49, 49, 49 }, /* IDSEL 3 - PCIX1 Slot 2 */
- { 49, 49, 49, 49 }, /* IDSEL 4 - PCIX1 Slot 3 */
- };
- const long min_idsel = 1, max_idsel = 4, irqs_per_slot = 4;
- return PCI_IRQ_TABLE_LOOKUP;
- /* PCIX2 */
- } else if (hose->index == 1) {
- static char pci_irq_table[][4] =
- /*
- * PCI IDSEL/INTPIN->INTLINE
- * A B C D
- */
- {
- { 50, 50, 50, 50 }, /* IDSEL 1 - PCIX2 Slot 0 */
- { 50, 50, 50, 50 }, /* IDSEL 2 - PCIX2 Slot 1 */
- { 50, 50, 50, 50 }, /* IDSEL 3 - PCIX2 Slot 2 */
- { 50, 50, 50, 50 }, /* IDSEL 4 - PCIX2 Slot 3 */
- };
- const long min_idsel = 1, max_idsel = 4, irqs_per_slot = 4;
- return PCI_IRQ_TABLE_LOOKUP;
- }
- return -1;
-}
-
-static void __init luan_set_emacdata(void)
-{
- struct ocp_def *def;
- struct ocp_func_emac_data *emacdata;
-
- /* Set phy_map, phy_mode, and mac_addr for the 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_GMII;
- memcpy(emacdata->mac_addr, __res.bi_enetaddr, 6);
-}
-
-#define PCIX_READW(offset) \
- (readw((void *)((u32)pcix_reg_base+offset)))
-
-#define PCIX_WRITEW(value, offset) \
- (writew(value, (void *)((u32)pcix_reg_base+offset)))
-
-#define PCIX_WRITEL(value, offset) \
- (writel(value, (void *)((u32)pcix_reg_base+offset)))
-
-static void __init
-luan_setup_pcix(void)
-{
- int i;
- void *pcix_reg_base;
-
- for (i=0;i<3;i++) {
- pcix_reg_base = ioremap64(PCIX0_REG_BASE + i*PCIX_REG_OFFSET, PCIX_REG_SIZE);
-
- /* Enable PCIX0 I/O, Mem, and Busmaster cycles */
- PCIX_WRITEW(PCIX_READW(PCIX0_COMMAND) | PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER, PCIX0_COMMAND);
-
- /* 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_PIM0SAH);
- PCIX_WRITEL(0, PCIX0_PIM1SA);
- PCIX_WRITEL(0, PCIX0_PIM2SA);
- PCIX_WRITEL(0, PCIX0_PIM2SAH);
-
- /*
- * Setup 512MB PLB->PCI outbound mem window
- * (a_n000_0000->0_n000_0000)
- * */
- PCIX_WRITEL(0x0000000a, PCIX0_POM0LAH);
- PCIX_WRITEL(0x80000000 | i*LUAN_PCIX_MEM_SIZE, PCIX0_POM0LAL);
- PCIX_WRITEL(0x00000000, PCIX0_POM0PCIAH);
- PCIX_WRITEL(0x80000000 | i*LUAN_PCIX_MEM_SIZE, PCIX0_POM0PCIAL);
- PCIX_WRITEL(0xe0000001, 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(0xe0000007, PCIX0_PIM0SA);
- PCIX_WRITEL(0xffffffff, PCIX0_PIM0SAH);
-
- iounmap(pcix_reg_base);
- }
-
- eieio();
-}
-
-static void __init
-luan_setup_hose(struct pci_controller *hose,
- int lower_mem,
- int upper_mem,
- int cfga,
- int cfgd,
- u64 pcix_io_base)
-{
- char name[20];
-
- sprintf(name, "PCIX%d host bridge", hose->index);
-
- hose->pci_mem_offset = LUAN_PCIX_MEM_OFFSET;
-
- pci_init_resource(&hose->io_resource,
- LUAN_PCIX_LOWER_IO,
- LUAN_PCIX_UPPER_IO,
- IORESOURCE_IO,
- name);
-
- pci_init_resource(&hose->mem_resources[0],
- lower_mem,
- upper_mem,
- IORESOURCE_MEM,
- name);
-
- hose->io_space.start = LUAN_PCIX_LOWER_IO;
- hose->io_space.end = LUAN_PCIX_UPPER_IO;
- hose->mem_space.start = lower_mem;
- hose->mem_space.end = upper_mem;
- hose->io_base_virt = ioremap64(pcix_io_base, PCIX_IO_SIZE);
- isa_io_base = (unsigned long) hose->io_base_virt;
-
- setup_indirect_pci(hose, cfga, cfgd);
- hose->set_cfg_type = 1;
-}
-
-static void __init
-luan_setup_hoses(void)
-{
- struct pci_controller *hose1, *hose2;
-
- /* Configure windows on the PCI-X host bridge */
- luan_setup_pcix();
-
- /* Allocate hoses for PCIX1 and PCIX2 */
- hose1 = pcibios_alloc_controller();
- if (!hose1)
- return;
-
- hose2 = pcibios_alloc_controller();
- if (!hose2) {
- pcibios_free_controller(hose1);
- return;
- }
-
- /* Setup PCIX1 */
- hose1->first_busno = 0;
- hose1->last_busno = 0xff;
-
- luan_setup_hose(hose1,
- LUAN_PCIX1_LOWER_MEM,
- LUAN_PCIX1_UPPER_MEM,
- PCIX1_CFGA,
- PCIX1_CFGD,
- PCIX1_IO_BASE);
-
- hose1->last_busno = pciauto_bus_scan(hose1, hose1->first_busno);
-
- /* Setup PCIX2 */
- hose2->first_busno = hose1->last_busno + 1;
- hose2->last_busno = 0xff;
-
- luan_setup_hose(hose2,
- LUAN_PCIX2_LOWER_MEM,
- LUAN_PCIX2_UPPER_MEM,
- PCIX2_CFGA,
- PCIX2_CFGD,
- PCIX2_IO_BASE);
-
- hose2->last_busno = pciauto_bus_scan(hose2, hose2->first_busno);
-
- ppc_md.pci_swizzle = common_swizzle;
- ppc_md.pci_map_irq = luan_map_irq;
-}
-
-TODC_ALLOC();
-
-static void __init
-luan_early_serial_map(void)
-{
- struct uart_port port;
-
- /* Setup ioremapped serial port access */
- memset(&port, 0, sizeof(port));
- port.membase = ioremap64(PPC440SP_UART0_ADDR, 8);
- port.irq = UART0_INT;
- 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");
- }
-
- port.membase = ioremap64(PPC440SP_UART1_ADDR, 8);
- port.irq = UART1_INT;
- port.uartclk = clocks.uart1;
- port.line = 1;
-
- if (early_serial_setup(&port) != 0) {
- printk("Early serial init of port 1 failed\n");
- }
-
- port.membase = ioremap64(PPC440SP_UART2_ADDR, 8);
- port.irq = UART2_INT;
- port.uartclk = BASE_BAUD;
- port.line = 2;
-
- if (early_serial_setup(&port) != 0) {
- printk("Early serial init of port 2 failed\n");
- }
-}
-
-static void __init
-luan_setup_arch(void)
-{
- luan_set_emacdata();
-
-#if !defined(CONFIG_BDI_SWITCH)
- /*
- * The Abatron BDI JTAG debugger does not tolerate others
- * mucking with the debug registers.
- */
- mtspr(SPRN_DBCR0, (DBCR0_TDE | DBCR0_IDM));
-#endif
-
- /*
- * Determine various clocks.
- * To be completely correct we should get SysClk
- * from FPGA, because it can be changed by on-board switches
- * --ebs
- */
- /* 440GX and 440SP clocking is the same -mdp */
- ibm440gx_get_clocks(&clocks, 33333333, 6 * 1843200);
- ocp_sys_info.opb_bus_freq = clocks.opb;
-
- /* init to some ~sane value until calibrate_delay() runs */
- loops_per_jiffy = 50000000/HZ;
-
- /* Setup PCIXn host bridges */
- luan_setup_hoses();
-
-#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
-
- luan_early_serial_map();
-
- /* Identify the system */
- printk("Luan 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 = luan_setup_arch;
- ppc_md.show_cpuinfo = luan_show_cpuinfo;
- ppc_md.find_end_of_memory = ibm440sp_find_end_of_memory;
- ppc_md.get_irq = NULL; /* Set in ppc4xx_pic_init() */
-
- ppc_md.calibrate_decr = luan_calibrate_decr;
-#ifdef CONFIG_KGDB
- ppc_md.early_serial_map = luan_early_serial_map;
-#endif
-}
git.samba.org / sfrench / cifs-2.6.git / blobdiff