| /* |
| * arch/ppc/platform/85xx/mpc85xx_cds_common.c |
| * |
| * MPC85xx CDS board specific routines |
| * |
| * Maintainer: Kumar Gala <kumar.gala@freescale.com> |
| * |
| * Copyright 2004 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/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/major.h> |
| #include <linux/console.h> |
| #include <linux/delay.h> |
| #include <linux/irq.h> |
| #include <linux/seq_file.h> |
| #include <linux/serial.h> |
| #include <linux/module.h> |
| #include <linux/root_dev.h> |
| #include <linux/initrd.h> |
| #include <linux/tty.h> |
| #include <linux/serial_core.h> |
| #include <linux/fsl_devices.h> |
| |
| #include <asm/system.h> |
| #include <asm/pgtable.h> |
| #include <asm/page.h> |
| #include <asm/atomic.h> |
| #include <asm/time.h> |
| #include <asm/todc.h> |
| #include <asm/io.h> |
| #include <asm/machdep.h> |
| #include <asm/prom.h> |
| #include <asm/open_pic.h> |
| #include <asm/bootinfo.h> |
| #include <asm/pci-bridge.h> |
| #include <asm/mpc85xx.h> |
| #include <asm/irq.h> |
| #include <asm/immap_85xx.h> |
| #include <asm/immap_cpm2.h> |
| #include <asm/ppc_sys.h> |
| #include <asm/kgdb.h> |
| |
| #include <mm/mmu_decl.h> |
| #include <syslib/cpm2_pic.h> |
| #include <syslib/ppc85xx_common.h> |
| #include <syslib/ppc85xx_setup.h> |
| |
| |
| #ifndef CONFIG_PCI |
| unsigned long isa_io_base = 0; |
| unsigned long isa_mem_base = 0; |
| #endif |
| |
| extern unsigned long total_memory; /* in mm/init */ |
| |
| unsigned char __res[sizeof (bd_t)]; |
| |
| static int cds_pci_slot = 2; |
| static volatile u8 * cadmus; |
| |
| /* Internal interrupts are all Level Sensitive, and Positive Polarity */ |
| |
| static u_char mpc85xx_cds_openpic_initsenses[] __initdata = { |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 0: L2 Cache */ |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 1: ECM */ |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 2: DDR DRAM */ |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 3: LBIU */ |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 4: DMA 0 */ |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 5: DMA 1 */ |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 6: DMA 2 */ |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 7: DMA 3 */ |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 8: PCI/PCI-X */ |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 9: RIO Inbound Port Write Error */ |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 10: RIO Doorbell Inbound */ |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 11: RIO Outbound Message */ |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 12: RIO Inbound Message */ |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 13: TSEC 0 Transmit */ |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 14: TSEC 0 Receive */ |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 15: Unused */ |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 16: Unused */ |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 17: Unused */ |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 18: TSEC 0 Receive/Transmit Error */ |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 19: TSEC 1 Transmit */ |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 20: TSEC 1 Receive */ |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 21: Unused */ |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 22: Unused */ |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 23: Unused */ |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 24: TSEC 1 Receive/Transmit Error */ |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 25: Fast Ethernet */ |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 26: DUART */ |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 27: I2C */ |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 28: Performance Monitor */ |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 29: Unused */ |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 30: CPM */ |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* Internal 31: Unused */ |
| #if defined(CONFIG_PCI) |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 0: PCI1 slot */ |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 1: PCI1 slot */ |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 2: PCI1 slot */ |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 3: PCI1 slot */ |
| #else |
| 0x0, /* External 0: */ |
| 0x0, /* External 1: */ |
| 0x0, /* External 2: */ |
| 0x0, /* External 3: */ |
| #endif |
| 0x0, /* External 4: */ |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 5: PHY */ |
| 0x0, /* External 6: */ |
| 0x0, /* External 7: */ |
| 0x0, /* External 8: */ |
| 0x0, /* External 9: */ |
| 0x0, /* External 10: */ |
| #if defined(CONFIG_85xx_PCI2) && defined(CONFIG_PCI) |
| (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 11: PCI2 slot 0 */ |
| #else |
| 0x0, /* External 11: */ |
| #endif |
| }; |
| |
| /* ************************************************************************ */ |
| int |
| mpc85xx_cds_show_cpuinfo(struct seq_file *m) |
| { |
| uint pvid, svid, phid1; |
| uint memsize = total_memory; |
| bd_t *binfo = (bd_t *) __res; |
| unsigned int freq; |
| |
| /* get the core frequency */ |
| freq = binfo->bi_intfreq; |
| |
| pvid = mfspr(SPRN_PVR); |
| svid = mfspr(SPRN_SVR); |
| |
| seq_printf(m, "Vendor\t\t: Freescale Semiconductor\n"); |
| seq_printf(m, "Machine\t\t: CDS - MPC%s (%x)\n", cur_ppc_sys_spec->ppc_sys_name, cadmus[CM_VER]); |
| seq_printf(m, "clock\t\t: %dMHz\n", freq / 1000000); |
| 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)); |
| |
| return 0; |
| } |
| |
| #ifdef CONFIG_CPM2 |
| static void cpm2_cascade(int irq, void *dev_id, struct pt_regs *regs) |
| { |
| while((irq = cpm2_get_irq(regs)) >= 0) |
| __do_IRQ(irq, regs); |
| } |
| |
| static struct irqaction cpm2_irqaction = { |
| .handler = cpm2_cascade, |
| .flags = SA_INTERRUPT, |
| .mask = CPU_MASK_NONE, |
| .name = "cpm2_cascade", |
| }; |
| #endif /* CONFIG_CPM2 */ |
| |
| void __init |
| mpc85xx_cds_init_IRQ(void) |
| { |
| bd_t *binfo = (bd_t *) __res; |
| |
| /* Determine the Physical Address of the OpenPIC regs */ |
| phys_addr_t OpenPIC_PAddr = binfo->bi_immr_base + MPC85xx_OPENPIC_OFFSET; |
| OpenPIC_Addr = ioremap(OpenPIC_PAddr, MPC85xx_OPENPIC_SIZE); |
| OpenPIC_InitSenses = mpc85xx_cds_openpic_initsenses; |
| OpenPIC_NumInitSenses = sizeof (mpc85xx_cds_openpic_initsenses); |
| |
| /* Skip reserved space and internal sources */ |
| openpic_set_sources(0, 32, OpenPIC_Addr + 0x10200); |
| /* Map PIC IRQs 0-11 */ |
| openpic_set_sources(32, 12, OpenPIC_Addr + 0x10000); |
| |
| /* we let openpic interrupts starting from an offset, to |
| * leave space for cascading interrupts underneath. |
| */ |
| openpic_init(MPC85xx_OPENPIC_IRQ_OFFSET); |
| |
| #ifdef CONFIG_CPM2 |
| /* Setup CPM2 PIC */ |
| cpm2_init_IRQ(); |
| |
| setup_irq(MPC85xx_IRQ_CPM, &cpm2_irqaction); |
| #endif |
| |
| return; |
| } |
| |
| #ifdef CONFIG_PCI |
| /* |
| * interrupt routing |
| */ |
| int |
| mpc85xx_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) |
| { |
| /* Handle PCI1 interrupts */ |
| char pci_irq_table[][4] = |
| /* |
| * PCI IDSEL/INTPIN->INTLINE |
| * A B C D |
| */ |
| |
| /* Note IRQ assignment for slots is based on which slot the elysium is |
| * in -- in this setup elysium is in slot #2 (this PIRQA as first |
| * interrupt on slot */ |
| { |
| { 0, 1, 2, 3 }, /* 16 - PMC */ |
| { 3, 0, 0, 0 }, /* 17 P2P (Tsi320) */ |
| { 0, 1, 2, 3 }, /* 18 - Slot 1 */ |
| { 1, 2, 3, 0 }, /* 19 - Slot 2 */ |
| { 2, 3, 0, 1 }, /* 20 - Slot 3 */ |
| { 3, 0, 1, 2 }, /* 21 - Slot 4 */ |
| }; |
| |
| const long min_idsel = 16, max_idsel = 21, irqs_per_slot = 4; |
| int i, j; |
| |
| for (i = 0; i < 6; i++) |
| for (j = 0; j < 4; j++) |
| pci_irq_table[i][j] = |
| ((pci_irq_table[i][j] + 5 - |
| cds_pci_slot) & 0x3) + PIRQ0A; |
| |
| return PCI_IRQ_TABLE_LOOKUP; |
| } else { |
| /* Handle PCI2 interrupts (if we have one) */ |
| char pci_irq_table[][4] = |
| { |
| /* |
| * We only have one slot and one interrupt |
| * going to PIRQA - PIRQD */ |
| { PIRQ1A, PIRQ1A, PIRQ1A, PIRQ1A }, /* 21 - slot 0 */ |
| }; |
| |
| const long min_idsel = 21, max_idsel = 21, irqs_per_slot = 4; |
| |
| return PCI_IRQ_TABLE_LOOKUP; |
| } |
| } |
| |
| #define ARCADIA_HOST_BRIDGE_IDSEL 17 |
| #define ARCADIA_2ND_BRIDGE_IDSEL 3 |
| |
| extern int mpc85xx_pci1_last_busno; |
| |
| int |
| mpc85xx_exclude_device(u_char bus, u_char devfn) |
| { |
| if (bus == 0 && PCI_SLOT(devfn) == 0) |
| return PCIBIOS_DEVICE_NOT_FOUND; |
| #ifdef CONFIG_85xx_PCI2 |
| if (mpc85xx_pci1_last_busno) |
| if (bus == (mpc85xx_pci1_last_busno + 1) && PCI_SLOT(devfn) == 0) |
| return PCIBIOS_DEVICE_NOT_FOUND; |
| #endif |
| /* We explicitly do not go past the Tundra 320 Bridge */ |
| if (bus == 1) |
| return PCIBIOS_DEVICE_NOT_FOUND; |
| if ((bus == 0) && (PCI_SLOT(devfn) == ARCADIA_2ND_BRIDGE_IDSEL)) |
| return PCIBIOS_DEVICE_NOT_FOUND; |
| else |
| return PCIBIOS_SUCCESSFUL; |
| } |
| #endif /* CONFIG_PCI */ |
| |
| TODC_ALLOC(); |
| |
| /* ************************************************************************ |
| * |
| * Setup the architecture |
| * |
| */ |
| static void __init |
| mpc85xx_cds_setup_arch(void) |
| { |
| bd_t *binfo = (bd_t *) __res; |
| unsigned int freq; |
| struct gianfar_platform_data *pdata; |
| |
| /* get the core frequency */ |
| freq = binfo->bi_intfreq; |
| |
| printk("mpc85xx_cds_setup_arch\n"); |
| |
| #ifdef CONFIG_CPM2 |
| cpm2_reset(); |
| #endif |
| |
| cadmus = ioremap(CADMUS_BASE, CADMUS_SIZE); |
| cds_pci_slot = ((cadmus[CM_CSR] >> 6) & 0x3) + 1; |
| printk("CDS Version = %x in PCI slot %d\n", cadmus[CM_VER], cds_pci_slot); |
| |
| /* Setup TODC access */ |
| TODC_INIT(TODC_TYPE_DS1743, |
| 0, |
| 0, |
| ioremap(CDS_RTC_ADDR, CDS_RTC_SIZE), |
| 8); |
| |
| /* Set loops_per_jiffy to a half-way reasonable value, |
| for use until calibrate_delay gets called. */ |
| loops_per_jiffy = freq / HZ; |
| |
| #ifdef CONFIG_PCI |
| /* setup PCI host bridges */ |
| mpc85xx_setup_hose(); |
| #endif |
| |
| #ifdef CONFIG_SERIAL_8250 |
| mpc85xx_early_serial_map(); |
| #endif |
| |
| #ifdef CONFIG_SERIAL_TEXT_DEBUG |
| /* Invalidate the entry we stole earlier the serial ports |
| * should be properly mapped */ |
| invalidate_tlbcam_entry(NUM_TLBCAMS - 1); |
| #endif |
| |
| /* setup the board related information for the enet controllers */ |
| pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC1); |
| pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR; |
| pdata->interruptPHY = MPC85xx_IRQ_EXT5; |
| pdata->phyid = 0; |
| /* fixup phy address */ |
| pdata->phy_reg_addr += binfo->bi_immr_base; |
| memcpy(pdata->mac_addr, binfo->bi_enetaddr, 6); |
| |
| pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC2); |
| pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR; |
| pdata->interruptPHY = MPC85xx_IRQ_EXT5; |
| pdata->phyid = 1; |
| /* fixup phy address */ |
| pdata->phy_reg_addr += binfo->bi_immr_base; |
| memcpy(pdata->mac_addr, binfo->bi_enet1addr, 6); |
| |
| |
| #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 |
| } |
| |
| /* ************************************************************************ */ |
| void __init |
| platform_init(unsigned long r3, unsigned long r4, unsigned long r5, |
| unsigned long r6, unsigned long r7) |
| { |
| /* parse_bootinfo must always be called first */ |
| parse_bootinfo(find_bootinfo()); |
| |
| /* |
| * If we were passed in a board information, copy it into the |
| * residual data area. |
| */ |
| if (r3) { |
| memcpy((void *) __res, (void *) (r3 + KERNELBASE), |
| sizeof (bd_t)); |
| |
| } |
| #ifdef CONFIG_SERIAL_TEXT_DEBUG |
| { |
| bd_t *binfo = (bd_t *) __res; |
| struct uart_port p; |
| |
| /* Use the last TLB entry to map CCSRBAR to allow access to DUART regs */ |
| settlbcam(NUM_TLBCAMS - 1, binfo->bi_immr_base, |
| binfo->bi_immr_base, MPC85xx_CCSRBAR_SIZE, _PAGE_IO, 0); |
| |
| memset(&p, 0, sizeof (p)); |
| p.iotype = SERIAL_IO_MEM; |
| p.membase = (void *) binfo->bi_immr_base + MPC85xx_UART0_OFFSET; |
| p.uartclk = binfo->bi_busfreq; |
| |
| gen550_init(0, &p); |
| |
| memset(&p, 0, sizeof (p)); |
| p.iotype = SERIAL_IO_MEM; |
| p.membase = (void *) binfo->bi_immr_base + MPC85xx_UART1_OFFSET; |
| p.uartclk = binfo->bi_busfreq; |
| |
| gen550_init(1, &p); |
| } |
| #endif |
| |
| #if defined(CONFIG_BLK_DEV_INITRD) |
| /* |
| * If the init RAM disk has been configured in, and there's a valid |
| * starting address for it, set it up. |
| */ |
| if (r4) { |
| initrd_start = r4 + KERNELBASE; |
| initrd_end = r5 + KERNELBASE; |
| } |
| #endif /* CONFIG_BLK_DEV_INITRD */ |
| |
| /* Copy the kernel command line arguments to a safe place. */ |
| |
| if (r6) { |
| *(char *) (r7 + KERNELBASE) = 0; |
| strcpy(cmd_line, (char *) (r6 + KERNELBASE)); |
| } |
| |
| identify_ppc_sys_by_id(mfspr(SPRN_SVR)); |
| |
| /* setup the PowerPC module struct */ |
| ppc_md.setup_arch = mpc85xx_cds_setup_arch; |
| ppc_md.show_cpuinfo = mpc85xx_cds_show_cpuinfo; |
| |
| ppc_md.init_IRQ = mpc85xx_cds_init_IRQ; |
| ppc_md.get_irq = openpic_get_irq; |
| |
| ppc_md.restart = mpc85xx_restart; |
| ppc_md.power_off = mpc85xx_power_off; |
| ppc_md.halt = mpc85xx_halt; |
| |
| ppc_md.find_end_of_memory = mpc85xx_find_end_of_memory; |
| |
| ppc_md.calibrate_decr = mpc85xx_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; |
| |
| #if defined(CONFIG_SERIAL_8250) && defined(CONFIG_SERIAL_TEXT_DEBUG) |
| ppc_md.progress = gen550_progress; |
| #endif /* CONFIG_SERIAL_8250 && CONFIG_SERIAL_TEXT_DEBUG */ |
| #if defined(CONFIG_SERIAL_8250) && defined(CONFIG_KGDB) |
| ppc_md.early_serial_map = mpc85xx_early_serial_map; |
| #endif /* CONFIG_SERIAL_8250 && CONFIG_KGDB */ |
| |
| if (ppc_md.progress) |
| ppc_md.progress("mpc85xx_cds_init(): exit", 0); |
| |
| return; |
| } |