/* * arch/ppc/platforms/ebony.c * * Ebony board specific routines * * Matt Porter * * Copyright 2002 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* * Ebony IRQ triggering/polarity settings */ static u_char ebony_IRQ_initsenses[] __initdata = { (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 0: UART 0 */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 1: UART 1 */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 2: IIC 0 */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 3: IIC 1 */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 4: PCI Inb Mess */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 5: PCI Cmd Wrt */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 6: PCI PM */ (IRQ_SENSE_EDGE | IRQ_POLARITY_POSITIVE), /* 7: PCI MSI 0 */ (IRQ_SENSE_EDGE | IRQ_POLARITY_POSITIVE), /* 8: PCI MSI 1 */ (IRQ_SENSE_EDGE | IRQ_POLARITY_POSITIVE), /* 9: PCI MSI 2 */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 10: MAL TX EOB */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 11: MAL RX EOB */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 12: DMA Chan 0 */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 13: DMA Chan 1 */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 14: DMA Chan 2 */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 15: DMA Chan 3 */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 16: Reserved */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 17: Reserved */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 18: GPT Timer 0 */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 19: GPT Timer 1 */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 20: GPT Timer 2 */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 21: GPT Timer 3 */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 22: GPT Timer 4 */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* 23: Ext Int 0 */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* 24: Ext Int 1 */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* 25: Ext Int 2 */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* 26: Ext Int 3 */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 27: Ext Int 4 */ (IRQ_SENSE_EDGE | IRQ_POLARITY_NEGATIVE), /* 28: Ext Int 5 */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* 29: Ext Int 6 */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 30: UIC1 NC Int */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 31: UIC1 Crit Int */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 32: MAL SERR */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 33: MAL TXDE */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 34: MAL RXDE */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 35: ECC Unc Err */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 36: ECC Corr Err */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 37: Ext Bus Ctrl */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 38: Ext Bus Mstr */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 39: OPB->PLB */ (IRQ_SENSE_EDGE | IRQ_POLARITY_POSITIVE), /* 40: PCI MSI 3 */ (IRQ_SENSE_EDGE | IRQ_POLARITY_POSITIVE), /* 41: PCI MSI 4 */ (IRQ_SENSE_EDGE | IRQ_POLARITY_POSITIVE), /* 42: PCI MSI 5 */ (IRQ_SENSE_EDGE | IRQ_POLARITY_POSITIVE), /* 43: PCI MSI 6 */ (IRQ_SENSE_EDGE | IRQ_POLARITY_POSITIVE), /* 44: PCI MSI 7 */ (IRQ_SENSE_EDGE | IRQ_POLARITY_POSITIVE), /* 45: PCI MSI 8 */ (IRQ_SENSE_EDGE | IRQ_POLARITY_POSITIVE), /* 46: PCI MSI 9 */ (IRQ_SENSE_EDGE | IRQ_POLARITY_POSITIVE), /* 47: PCI MSI 10 */ (IRQ_SENSE_EDGE | IRQ_POLARITY_POSITIVE), /* 48: PCI MSI 11 */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 49: PLB Perf Mon */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 50: Ext Int 7 */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* 51: Ext Int 8 */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* 52: Ext Int 9 */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* 53: Ext Int 10 */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* 54: Ext Int 11 */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* 55: Ext Int 12 */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 56: Ser ROM Err */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 57: Reserved */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 58: Reserved */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 59: PCI Async Err */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 60: EMAC 0 */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 61: EMAC 0 WOL */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 62: EMAC 1 */ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* 63: EMAC 1 WOL */ }; extern void abort(void); /* Global Variables */ bd_t __res; 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. */ switch (PVR_REV(mfspr(PVR))) { case PVR_REV(PVR_440GP_RB): freq = EBONY_440GP_RB_SYSCLK; break; case PVR_REV(PVR_440GP_RC1): default: freq = EBONY_440GP_RC_SYSCLK; break; } tb_ticks_per_jiffy = freq / HZ; tb_to_us = mulhwu_scale_factor(freq, 1000000); /* Set the time base to zero */ mtspr(SPRN_TBWL, 0); mtspr(SPRN_TBWU, 0); /* Clear any pending timer interrupts */ mtspr(SPRN_TSR, TSR_ENW | TSR_WIS | TSR_DIS | TSR_FIS); /* Enable decrementer interrupt */ mtspr(SPRN_TCR, TCR_DIE); } 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, (u32)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 *pcix_reg_base; pcix_reg_base = ioremap64(PCIX0_REG_BASE, PCIX0_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; isa_io_base = (unsigned long)ioremap64(EBONY_PCI_IO_BASE, EBONY_PCI_IO_SIZE); hose->io_base_virt = (void *)isa_io_base; 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 = BASE_BAUD * 16; 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(PPC440GP_UART1_ADDR, 8); port.irq = 1; port.line = 1; if (early_serial_setup(&port) != 0) { printk("Early serial init of port 1 failed\n"); } } static void __init ebony_setup_arch(void) { unsigned char * vpd_base; struct ibm440gp_clocks clocks; #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 /* Retrieve MAC addresses */ vpd_base = ioremap64(EBONY_VPD_BASE, EBONY_VPD_SIZE); memcpy(__res.bi_enetaddr[0],EBONY_NA0_ADDR(vpd_base),6); memcpy(__res.bi_enetaddr[1],EBONY_NA1_ADDR(vpd_base),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); __res.bi_opb_busfreq = clocks.opb; /* Use IIC in standard (100 kHz) mode */ __res.bi_iic_fast[0] = __res.bi_iic_fast[1] = 0; /* 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 #ifdef CONFIG_VT conswitchp = &dummy_con; #endif ebony_early_serial_map(); ibm4xxPIC_InitSenses = ebony_IRQ_initsenses; ibm4xxPIC_NumInitSenses = sizeof(ebony_IRQ_initsenses); /* Identify the system */ printk("IBM Ebony port (MontaVista Software, Inc. (source@mvista.com))\n"); } static void ebony_restart(char *cmd) { local_irq_disable(); abort(); } static void ebony_power_off(void) { local_irq_disable(); for(;;); } static void ebony_halt(void) { local_irq_disable(); for(;;); } /* * Read the 440GP memory controller to get size of system memory. */ static unsigned long __init ebony_find_end_of_memory(void) { u32 i, bank_config; u32 mem_size = 0; for (i=0; i<4; i++) { switch (i) { case 0: mtdcr(DCRN_SDRAM0_CFGADDR, SDRAM0_B0CR); break; case 1: mtdcr(DCRN_SDRAM0_CFGADDR, SDRAM0_B1CR); break; case 2: mtdcr(DCRN_SDRAM0_CFGADDR, SDRAM0_B2CR); break; case 3: mtdcr(DCRN_SDRAM0_CFGADDR, SDRAM0_B3CR); break; } bank_config = mfdcr(DCRN_SDRAM0_CFGDATA); if (!(bank_config & SDRAM_CONFIG_BANK_ENABLE)) continue; switch (SDRAM_CONFIG_BANK_SIZE(bank_config)) { case SDRAM_CONFIG_SIZE_8M: mem_size += PPC44x_MEM_SIZE_8M; break; case SDRAM_CONFIG_SIZE_16M: mem_size += PPC44x_MEM_SIZE_16M; break; case SDRAM_CONFIG_SIZE_32M: mem_size += PPC44x_MEM_SIZE_32M; break; case SDRAM_CONFIG_SIZE_64M: mem_size += PPC44x_MEM_SIZE_64M; break; case SDRAM_CONFIG_SIZE_128M: mem_size += PPC44x_MEM_SIZE_128M; break; case SDRAM_CONFIG_SIZE_256M: mem_size += PPC44x_MEM_SIZE_256M; break; case SDRAM_CONFIG_SIZE_512M: mem_size += PPC44x_MEM_SIZE_512M; break; } } return mem_size; } static void __init ebony_init_irq(void) { int i; ppc4xx_pic_init(); for (i = 0; i < NR_IRQS; i++) irq_desc[i].handler = ppc4xx_pic; } #ifdef CONFIG_SERIAL_TEXT_DEBUG #include #include #include static struct serial_state rs_table[RS_TABLE_SIZE] = { SERIAL_PORT_DFNS /* Defined in */ }; static void ebony_progress(char *s, unsigned short hex) { volatile char c; volatile unsigned long com_port; u16 shift; com_port = (unsigned long)rs_table[0].iomem_base; shift = rs_table[0].iomem_reg_shift; while ((c = *s++) != 0) { while ((*((volatile unsigned char *)com_port + (UART_LSR << shift)) & UART_LSR_THRE) == 0) ; *(volatile unsigned char *)com_port = c; } /* Send LF/CR to pretty up output */ while ((*((volatile unsigned char *)com_port + (UART_LSR << shift)) & UART_LSR_THRE) == 0) ; *(volatile unsigned char *)com_port = '\r'; while ((*((volatile unsigned char *)com_port + (UART_LSR << shift)) & UART_LSR_THRE) == 0) ; *(volatile unsigned char *)com_port = '\n'; } #endif /* CONFIG_SERIAL_TEXT_DEBUG */ void __init platform_init(unsigned long r3, unsigned long r4, unsigned long r5, unsigned long r6, unsigned long r7) { parse_bootinfo((struct bi_record *) (r3 + KERNELBASE)); ppc_md.setup_arch = ebony_setup_arch; ppc_md.show_cpuinfo = ebony_show_cpuinfo; ppc_md.init_IRQ = ebony_init_irq; ppc_md.get_irq = NULL; /* Set in ppc4xx_pic_init() */ ppc_md.find_end_of_memory = ebony_find_end_of_memory; ppc_md.restart = ebony_restart; ppc_md.power_off = ebony_power_off; ppc_md.halt = ebony_halt; 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_SERIAL_TEXT_DEBUG ppc_md.progress = ebony_progress; #endif /* CONFIG_SERIAL_TEXT_DEBUG */ #ifdef CONFIG_KGDB ppc_md.early_serial_map = ebony_early_serial_map; #endif }