| /* |
| * arch/ppc/platforms/4xx/taishan.c |
| * |
| * AMCC Taishan board specific routines |
| * |
| * Copyright 2007 DENX Software Engineering, Stefan Roese <sr@denx.de> |
| * |
| * 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/ide.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/platform_device.h> |
| #include <linux/mtd/partitions.h> |
| #include <linux/mtd/nand.h> |
| #include <linux/mtd/ndfc.h> |
| #include <linux/mtd/physmap.h> |
| |
| #include <asm/machdep.h> |
| #include <asm/ocp.h> |
| #include <asm/bootinfo.h> |
| #include <asm/ppcboot.h> |
| |
| #include <syslib/gen550.h> |
| #include <syslib/ibm440gx_common.h> |
| |
| extern bd_t __res; |
| |
| static struct ibm44x_clocks clocks __initdata; |
| |
| /* |
| * NOR FLASH configuration (using mtd physmap driver) |
| */ |
| |
| /* start will be added dynamically, end is always fixed */ |
| static struct resource taishan_nor_resource = { |
| .start = TAISHAN_FLASH_ADDR, |
| .end = 0x1ffffffffULL, |
| .flags = IORESOURCE_MEM, |
| }; |
| |
| #define RW_PART0_OF 0 |
| #define RW_PART0_SZ 0x180000 |
| #define RW_PART1_SZ 0x200000 |
| /* Partition 2 will be autosized dynamically... */ |
| #define RW_PART3_SZ 0x80000 |
| #define RW_PART4_SZ 0x40000 |
| |
| static struct mtd_partition taishan_nor_parts[] = { |
| { |
| .name = "kernel", |
| .offset = 0, |
| .size = RW_PART0_SZ |
| }, |
| { |
| .name = "root", |
| .offset = MTDPART_OFS_APPEND, |
| .size = RW_PART1_SZ, |
| }, |
| { |
| .name = "user", |
| .offset = MTDPART_OFS_APPEND, |
| /* .size = RW_PART2_SZ */ /* will be adjusted dynamically */ |
| }, |
| { |
| .name = "env", |
| .offset = MTDPART_OFS_APPEND, |
| .size = RW_PART3_SZ, |
| }, |
| { |
| .name = "u-boot", |
| .offset = MTDPART_OFS_APPEND, |
| .size = RW_PART4_SZ, |
| } |
| }; |
| |
| static struct physmap_flash_data taishan_nor_data = { |
| .width = 4, |
| .parts = taishan_nor_parts, |
| .nr_parts = ARRAY_SIZE(taishan_nor_parts), |
| }; |
| |
| static struct platform_device taishan_nor_device = { |
| .name = "physmap-flash", |
| .id = 0, |
| .dev = { |
| .platform_data = &taishan_nor_data, |
| }, |
| .num_resources = 1, |
| .resource = &taishan_nor_resource, |
| }; |
| |
| static int taishan_setup_flash(void) |
| { |
| /* |
| * Adjust partition 2 to flash size |
| */ |
| taishan_nor_parts[2].size = __res.bi_flashsize - |
| RW_PART0_SZ - RW_PART1_SZ - RW_PART3_SZ - RW_PART4_SZ; |
| |
| platform_device_register(&taishan_nor_device); |
| |
| return 0; |
| } |
| arch_initcall(taishan_setup_flash); |
| |
| static void __init |
| taishan_calibrate_decr(void) |
| { |
| unsigned int freq; |
| |
| if (mfspr(SPRN_CCR1) & CCR1_TCS) |
| freq = TAISHAN_TMR_CLK; |
| else |
| freq = clocks.cpu; |
| |
| ibm44x_calibrate_decr(freq); |
| } |
| |
| static int |
| taishan_show_cpuinfo(struct seq_file *m) |
| { |
| seq_printf(m, "vendor\t\t: AMCC\n"); |
| seq_printf(m, "machine\t\t: PPC440GX EVB (Taishan)\n"); |
| ibm440gx_show_cpuinfo(m); |
| return 0; |
| } |
| |
| static inline int |
| taishan_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, 24, 25, 26 }, /* IDSEL 1 - PCI Slot 0 */ |
| { 24, 25, 26, 23 }, /* IDSEL 2 - PCI Slot 1 */ |
| }; |
| |
| const long min_idsel = 1, max_idsel = 2, irqs_per_slot = 4; |
| return PCI_IRQ_TABLE_LOOKUP; |
| } |
| |
| static void __init taishan_set_emacdata(void) |
| { |
| struct ocp_def *def; |
| struct ocp_func_emac_data *emacdata; |
| int i; |
| |
| /* Set phy_map, phy_mode, and mac_addr for each EMAC */ |
| for (i=2; i<4; i++) { |
| def = ocp_get_one_device(OCP_VENDOR_IBM, OCP_FUNC_EMAC, i); |
| emacdata = def->additions; |
| if (i < 2) { |
| emacdata->phy_map = 0x00000001; /* Skip 0x00 */ |
| emacdata->phy_mode = PHY_MODE_SMII; |
| } else { |
| emacdata->phy_map = 0x00000001; /* Skip 0x00 */ |
| emacdata->phy_mode = PHY_MODE_RGMII; |
| } |
| if (i == 0) |
| memcpy(emacdata->mac_addr, "\0\0\0\0\0\0", 6); |
| else if (i == 1) |
| memcpy(emacdata->mac_addr, "\0\0\0\0\0\0", 6); |
| else if (i == 2) |
| memcpy(emacdata->mac_addr, __res.bi_enetaddr, 6); |
| else if (i == 3) |
| memcpy(emacdata->mac_addr, __res.bi_enet1addr, 6); |
| } |
| } |
| |
| #define PCIX_READW(offset) \ |
| (readw(pcix_reg_base+offset)) |
| |
| #define PCIX_WRITEW(value, offset) \ |
| (writew(value, pcix_reg_base+offset)) |
| |
| #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 |
| taishan_setup_pcix(void) |
| { |
| void *pcix_reg_base; |
| |
| pcix_reg_base = ioremap64(PCIX0_REG_BASE, 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 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); |
| PCIX_WRITEL(0xffffffff, PCIX0_PIM0SAH); |
| |
| iounmap(pcix_reg_base); |
| |
| eieio(); |
| } |
| |
| static void __init |
| taishan_setup_hose(void) |
| { |
| struct pci_controller *hose; |
| |
| /* Configure windows on the PCI-X host bridge */ |
| taishan_setup_pcix(); |
| |
| hose = pcibios_alloc_controller(); |
| |
| if (!hose) |
| return; |
| |
| hose->first_busno = 0; |
| hose->last_busno = 0xff; |
| |
| hose->pci_mem_offset = TAISHAN_PCI_MEM_OFFSET; |
| |
| pci_init_resource(&hose->io_resource, |
| TAISHAN_PCI_LOWER_IO, |
| TAISHAN_PCI_UPPER_IO, |
| IORESOURCE_IO, |
| "PCI host bridge"); |
| |
| pci_init_resource(&hose->mem_resources[0], |
| TAISHAN_PCI_LOWER_MEM, |
| TAISHAN_PCI_UPPER_MEM, |
| IORESOURCE_MEM, |
| "PCI host bridge"); |
| |
| hose->io_space.start = TAISHAN_PCI_LOWER_IO; |
| hose->io_space.end = TAISHAN_PCI_UPPER_IO; |
| hose->mem_space.start = TAISHAN_PCI_LOWER_MEM; |
| hose->mem_space.end = TAISHAN_PCI_UPPER_MEM; |
| hose->io_base_virt = ioremap64(TAISHAN_PCI_IO_BASE, TAISHAN_PCI_IO_SIZE); |
| isa_io_base = (unsigned long) hose->io_base_virt; |
| |
| setup_indirect_pci(hose, |
| TAISHAN_PCI_CFGA_PLB32, |
| TAISHAN_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 = taishan_map_irq; |
| } |
| |
| |
| static void __init |
| taishan_early_serial_map(void) |
| { |
| struct uart_port port; |
| |
| /* Setup ioremapped serial port access */ |
| memset(&port, 0, sizeof(port)); |
| port.membase = ioremap64(PPC440GX_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"); |
| |
| #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); |
| #endif |
| |
| port.membase = ioremap64(PPC440GX_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"); |
| |
| #if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB) |
| /* Configure debug serial access */ |
| gen550_init(1, &port); |
| #endif |
| } |
| |
| static void __init |
| taishan_setup_arch(void) |
| { |
| taishan_set_emacdata(); |
| |
| ibm440gx_tah_enable(); |
| |
| /* |
| * Determine various clocks. |
| * To be completely correct we should get SysClk |
| * from FPGA, because it can be changed by on-board switches |
| * --ebs |
| */ |
| 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 PCI host bridge */ |
| taishan_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 |
| |
| taishan_early_serial_map(); |
| |
| /* Identify the system */ |
| printk("AMCC PowerPC 440GX Taishan Platform\n"); |
| } |
| |
| static void __init taishan_init(void) |
| { |
| ibm440gx_l2c_setup(&clocks); |
| } |
| |
| 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 = taishan_setup_arch; |
| ppc_md.show_cpuinfo = taishan_show_cpuinfo; |
| ppc_md.get_irq = NULL; /* Set in ppc4xx_pic_init() */ |
| |
| ppc_md.calibrate_decr = taishan_calibrate_decr; |
| |
| #ifdef CONFIG_KGDB |
| ppc_md.early_serial_map = taishan_early_serial_map; |
| #endif |
| ppc_md.init = taishan_init; |
| } |
| |