diff options
Diffstat (limited to 'arch/ppc/platforms/4xx/luan.c')
| -rw-r--r-- | arch/ppc/platforms/4xx/luan.c | 387 |
1 files changed, 387 insertions, 0 deletions
diff --git a/arch/ppc/platforms/4xx/luan.c b/arch/ppc/platforms/4xx/luan.c new file mode 100644 index 00000000000..1df2339f1f6 --- /dev/null +++ b/arch/ppc/platforms/4xx/luan.c @@ -0,0 +1,387 @@ +/* + * arch/ppc/platforms/4xx/luan.c + * + * 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/config.h> +#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/ide.h> +#include <linux/initrd.h> +#include <linux/irq.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 <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> + +/* + * This is a horrible kludge, we eventually need to abstract this + * generic PHY stuff, so the standard phy mode defines can be + * easily used from arch code. + */ +#include "../../../../drivers/net/ibm_emac/ibm_emac_phy.h" + +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; + isa_io_base = + (unsigned long)ioremap64(pcix_io_base, PCIX_IO_SIZE); + hose->io_base_virt = (void *)isa_io_base; + + 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(); + hose2 = pcibios_alloc_controller(); + if (!hose1 || !hose2) + 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 = SERIAL_IO_MEM; + port.flags = ASYNC_BOOT_AUTOCONF | ASYNC_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) +{ + parse_bootinfo(find_bootinfo()); + + /* + * If we were passed in a board information, copy it into the + * residual data area. + */ + if (r3) + __res = *(bd_t *)(r3 + KERNELBASE); + + ibm44x_platform_init(); + + 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 +} |