diff options
Diffstat (limited to 'arch/ppc/platforms/chestnut.c')
| -rw-r--r-- | arch/ppc/platforms/chestnut.c | 574 |
1 files changed, 0 insertions, 574 deletions
diff --git a/arch/ppc/platforms/chestnut.c b/arch/ppc/platforms/chestnut.c deleted file mode 100644 index 27c140f218ed..000000000000 --- a/arch/ppc/platforms/chestnut.c +++ /dev/null @@ -1,574 +0,0 @@ -/* - * Board setup routines for IBM Chestnut - * - * Author: <source@mvista.com> - * - * <2004> (c) MontaVista Software, Inc. This file is licensed under - * the terms of the GNU General Public License version 2. This program - * is licensed "as is" without any warranty of any kind, whether express - * or implied. - */ - -#include <linux/stddef.h> -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/errno.h> -#include <linux/reboot.h> -#include <linux/kdev_t.h> -#include <linux/major.h> -#include <linux/blkdev.h> -#include <linux/console.h> -#include <linux/root_dev.h> -#include <linux/initrd.h> -#include <linux/delay.h> -#include <linux/seq_file.h> -#include <linux/serial.h> -#include <linux/serial_core.h> -#include <linux/serial_8250.h> -#include <linux/mtd/physmap.h> -#include <asm/system.h> -#include <asm/pgtable.h> -#include <asm/page.h> -#include <asm/time.h> -#include <asm/dma.h> -#include <asm/io.h> -#include <asm/hw_irq.h> -#include <asm/machdep.h> -#include <asm/kgdb.h> -#include <asm/bootinfo.h> -#include <asm/mv64x60.h> -#include <platforms/chestnut.h> - -static void __iomem *sram_base; /* Virtual addr of Internal SRAM */ -static void __iomem *cpld_base; /* Virtual addr of CPLD Regs */ - -static mv64x60_handle_t bh; - -extern void gen550_progress(char *, unsigned short); -extern void gen550_init(int, struct uart_port *); -extern void mv64360_pcibios_fixup(mv64x60_handle_t *bh); - -#define CHESTNUT_PRESERVE_MASK (BIT(MV64x60_CPU2DEV_0_WIN) | \ - BIT(MV64x60_CPU2DEV_1_WIN) | \ - BIT(MV64x60_CPU2DEV_2_WIN) | \ - BIT(MV64x60_CPU2DEV_3_WIN) | \ - BIT(MV64x60_CPU2BOOT_WIN)) -/************************************************************************** - * FUNCTION: chestnut_calibrate_decr - * - * DESCRIPTION: initialize decrementer interrupt frequency (used as system - * timer) - * - ****/ -static void __init -chestnut_calibrate_decr(void) -{ - ulong freq; - - freq = CHESTNUT_BUS_SPEED / 4; - - printk("time_init: decrementer frequency = %lu.%.6lu MHz\n", - freq/1000000, freq%1000000); - - tb_ticks_per_jiffy = freq / HZ; - tb_to_us = mulhwu_scale_factor(freq, 1000000); -} - -static int -chestnut_show_cpuinfo(struct seq_file *m) -{ - seq_printf(m, "vendor\t\t: IBM\n"); - seq_printf(m, "machine\t\t: 750FX/GX Eval Board (Chestnut/Buckeye)\n"); - - return 0; -} - -/************************************************************************** - * FUNCTION: chestnut_find_end_of_memory - * - * DESCRIPTION: ppc_md memory size callback - * - ****/ -unsigned long __init -chestnut_find_end_of_memory(void) -{ - static int mem_size = 0; - - if (mem_size == 0) { - mem_size = mv64x60_get_mem_size(CONFIG_MV64X60_NEW_BASE, - MV64x60_TYPE_MV64460); - } - return mem_size; -} - -#if defined(CONFIG_SERIAL_8250) -static void __init -chestnut_early_serial_map(void) -{ - struct uart_port port; - - /* Setup serial port access */ - memset(&port, 0, sizeof(port)); - port.uartclk = BASE_BAUD * 16; - port.irq = UART0_INT; - port.flags = STD_COM_FLAGS | UPF_IOREMAP; - port.iotype = UPIO_MEM; - port.mapbase = CHESTNUT_UART0_IO_BASE; - port.regshift = 0; - - if (early_serial_setup(&port) != 0) - printk("Early serial init of port 0 failed\n"); - - /* Assume early_serial_setup() doesn't modify serial_req */ - port.line = 1; - port.irq = UART1_INT; - port.mapbase = CHESTNUT_UART1_IO_BASE; - - if (early_serial_setup(&port) != 0) - printk("Early serial init of port 1 failed\n"); -} -#endif - -/************************************************************************** - * FUNCTION: chestnut_map_irq - * - * DESCRIPTION: 0 return since PCI IRQs not needed - * - ****/ -static int __init -chestnut_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin) -{ - static char pci_irq_table[][4] = { - {CHESTNUT_PCI_SLOT0_IRQ, CHESTNUT_PCI_SLOT0_IRQ, - CHESTNUT_PCI_SLOT0_IRQ, CHESTNUT_PCI_SLOT0_IRQ}, - {CHESTNUT_PCI_SLOT1_IRQ, CHESTNUT_PCI_SLOT1_IRQ, - CHESTNUT_PCI_SLOT1_IRQ, CHESTNUT_PCI_SLOT1_IRQ}, - {CHESTNUT_PCI_SLOT2_IRQ, CHESTNUT_PCI_SLOT2_IRQ, - CHESTNUT_PCI_SLOT2_IRQ, CHESTNUT_PCI_SLOT2_IRQ}, - {CHESTNUT_PCI_SLOT3_IRQ, CHESTNUT_PCI_SLOT3_IRQ, - CHESTNUT_PCI_SLOT3_IRQ, CHESTNUT_PCI_SLOT3_IRQ}, - }; - const long min_idsel = 1, max_idsel = 4, irqs_per_slot = 4; - - return PCI_IRQ_TABLE_LOOKUP; -} - - -/************************************************************************** - * FUNCTION: chestnut_setup_bridge - * - * DESCRIPTION: initalize board-specific settings on the MV64360 - * - ****/ -static void __init -chestnut_setup_bridge(void) -{ - struct mv64x60_setup_info si; - int i; - - if ( ppc_md.progress ) - ppc_md.progress("chestnut_setup_bridge: enter", 0); - - memset(&si, 0, sizeof(si)); - - si.phys_reg_base = CONFIG_MV64X60_NEW_BASE; - - /* setup only PCI bus 0 (bus 1 not used) */ - si.pci_0.enable_bus = 1; - si.pci_0.pci_io.cpu_base = CHESTNUT_PCI0_IO_PROC_ADDR; - si.pci_0.pci_io.pci_base_hi = 0; - si.pci_0.pci_io.pci_base_lo = CHESTNUT_PCI0_IO_PCI_ADDR; - si.pci_0.pci_io.size = CHESTNUT_PCI0_IO_SIZE; - si.pci_0.pci_io.swap = MV64x60_CPU2PCI_SWAP_NONE; /* no swapping */ - si.pci_0.pci_mem[0].cpu_base = CHESTNUT_PCI0_MEM_PROC_ADDR; - si.pci_0.pci_mem[0].pci_base_hi = CHESTNUT_PCI0_MEM_PCI_HI_ADDR; - si.pci_0.pci_mem[0].pci_base_lo = CHESTNUT_PCI0_MEM_PCI_LO_ADDR; - si.pci_0.pci_mem[0].size = CHESTNUT_PCI0_MEM_SIZE; - si.pci_0.pci_mem[0].swap = MV64x60_CPU2PCI_SWAP_NONE; /* no swapping */ - si.pci_0.pci_cmd_bits = 0; - si.pci_0.latency_timer = 0x80; - - for (i=0; i<MV64x60_CPU2MEM_WINDOWS; i++) { -#if defined(CONFIG_NOT_COHERENT_CACHE) - si.cpu_prot_options[i] = 0; - si.enet_options[i] = MV64360_ENET2MEM_SNOOP_NONE; - si.mpsc_options[i] = MV64360_MPSC2MEM_SNOOP_NONE; - si.idma_options[i] = MV64360_IDMA2MEM_SNOOP_NONE; - - si.pci_1.acc_cntl_options[i] = - MV64360_PCI_ACC_CNTL_SNOOP_NONE | - MV64360_PCI_ACC_CNTL_SWAP_NONE | - MV64360_PCI_ACC_CNTL_MBURST_128_BYTES | - MV64360_PCI_ACC_CNTL_RDSIZE_256_BYTES; -#else - si.cpu_prot_options[i] = 0; - si.enet_options[i] = MV64360_ENET2MEM_SNOOP_NONE; /* errata */ - si.mpsc_options[i] = MV64360_MPSC2MEM_SNOOP_NONE; /* errata */ - si.idma_options[i] = MV64360_IDMA2MEM_SNOOP_NONE; /* errata */ - - si.pci_1.acc_cntl_options[i] = - MV64360_PCI_ACC_CNTL_SNOOP_WB | - MV64360_PCI_ACC_CNTL_SWAP_NONE | - MV64360_PCI_ACC_CNTL_MBURST_32_BYTES | - MV64360_PCI_ACC_CNTL_RDSIZE_32_BYTES; -#endif - } - - /* Lookup host bridge - on CPU 0 - no SMP support */ - if (mv64x60_init(&bh, &si)) { - printk("\n\nPCI Bridge initialization failed!\n"); - } - - pci_dram_offset = 0; - ppc_md.pci_swizzle = common_swizzle; - ppc_md.pci_map_irq = chestnut_map_irq; - ppc_md.pci_exclude_device = mv64x60_pci_exclude_device; - - mv64x60_set_bus(&bh, 0, 0); - bh.hose_a->first_busno = 0; - bh.hose_a->last_busno = 0xff; - bh.hose_a->last_busno = pciauto_bus_scan(bh.hose_a, 0); -} - -void __init -chestnut_setup_peripherals(void) -{ - mv64x60_set_32bit_window(&bh, MV64x60_CPU2BOOT_WIN, - CHESTNUT_BOOT_8BIT_BASE, CHESTNUT_BOOT_8BIT_SIZE, 0); - bh.ci->enable_window_32bit(&bh, MV64x60_CPU2BOOT_WIN); - - mv64x60_set_32bit_window(&bh, MV64x60_CPU2DEV_0_WIN, - CHESTNUT_32BIT_BASE, CHESTNUT_32BIT_SIZE, 0); - bh.ci->enable_window_32bit(&bh, MV64x60_CPU2DEV_0_WIN); - - mv64x60_set_32bit_window(&bh, MV64x60_CPU2DEV_1_WIN, - CHESTNUT_CPLD_BASE, CHESTNUT_CPLD_SIZE, 0); - bh.ci->enable_window_32bit(&bh, MV64x60_CPU2DEV_1_WIN); - cpld_base = ioremap(CHESTNUT_CPLD_BASE, CHESTNUT_CPLD_SIZE); - - mv64x60_set_32bit_window(&bh, MV64x60_CPU2DEV_2_WIN, - CHESTNUT_UART_BASE, CHESTNUT_UART_SIZE, 0); - bh.ci->enable_window_32bit(&bh, MV64x60_CPU2DEV_2_WIN); - - mv64x60_set_32bit_window(&bh, MV64x60_CPU2DEV_3_WIN, - CHESTNUT_FRAM_BASE, CHESTNUT_FRAM_SIZE, 0); - bh.ci->enable_window_32bit(&bh, MV64x60_CPU2DEV_3_WIN); - - mv64x60_set_32bit_window(&bh, MV64x60_CPU2SRAM_WIN, - CHESTNUT_INTERNAL_SRAM_BASE, MV64360_SRAM_SIZE, 0); - bh.ci->enable_window_32bit(&bh, MV64x60_CPU2SRAM_WIN); - -#ifdef CONFIG_NOT_COHERENT_CACHE - mv64x60_write(&bh, MV64360_SRAM_CONFIG, 0x001600b0); -#else - mv64x60_write(&bh, MV64360_SRAM_CONFIG, 0x001600b2); -#endif - sram_base = ioremap(CHESTNUT_INTERNAL_SRAM_BASE, MV64360_SRAM_SIZE); - memset(sram_base, 0, MV64360_SRAM_SIZE); - - /* - * Configure MPP pins for PCI DMA - * - * PCI Slot GNT pin REQ pin - * 0 MPP16 MPP17 - * 1 MPP18 MPP19 - * 2 MPP20 MPP21 - * 3 MPP22 MPP23 - */ - mv64x60_write(&bh, MV64x60_MPP_CNTL_2, - (0x1 << 0) | /* MPPSel16 PCI0_GNT[0] */ - (0x1 << 4) | /* MPPSel17 PCI0_REQ[0] */ - (0x1 << 8) | /* MPPSel18 PCI0_GNT[1] */ - (0x1 << 12) | /* MPPSel19 PCI0_REQ[1] */ - (0x1 << 16) | /* MPPSel20 PCI0_GNT[2] */ - (0x1 << 20) | /* MPPSel21 PCI0_REQ[2] */ - (0x1 << 24) | /* MPPSel22 PCI0_GNT[3] */ - (0x1 << 28)); /* MPPSel23 PCI0_REQ[3] */ - /* - * Set unused MPP pins for output, as per schematic note - * - * Unused Pins: MPP01, MPP02, MPP04, MPP05, MPP06 - * MPP09, MPP10, MPP13, MPP14, MPP15 - */ - mv64x60_clr_bits(&bh, MV64x60_MPP_CNTL_0, - (0xf << 4) | /* MPPSel01 GPIO[1] */ - (0xf << 8) | /* MPPSel02 GPIO[2] */ - (0xf << 16) | /* MPPSel04 GPIO[4] */ - (0xf << 20) | /* MPPSel05 GPIO[5] */ - (0xf << 24)); /* MPPSel06 GPIO[6] */ - mv64x60_clr_bits(&bh, MV64x60_MPP_CNTL_1, - (0xf << 4) | /* MPPSel09 GPIO[9] */ - (0xf << 8) | /* MPPSel10 GPIO[10] */ - (0xf << 20) | /* MPPSel13 GPIO[13] */ - (0xf << 24) | /* MPPSel14 GPIO[14] */ - (0xf << 28)); /* MPPSel15 GPIO[15] */ - mv64x60_set_bits(&bh, MV64x60_GPP_IO_CNTL, /* Output */ - BIT(1) | BIT(2) | BIT(4) | BIT(5) | BIT(6) | - BIT(9) | BIT(10) | BIT(13) | BIT(14) | BIT(15)); - - /* - * Configure the following MPP pins to indicate a level - * triggered interrupt - * - * MPP24 - Board Reset (just map the MPP & GPP for chestnut_reset) - * MPP25 - UART A (high) - * MPP26 - UART B (high) - * MPP28 - PCI Slot 3 (low) - * MPP29 - PCI Slot 2 (low) - * MPP30 - PCI Slot 1 (low) - * MPP31 - PCI Slot 0 (low) - */ - mv64x60_clr_bits(&bh, MV64x60_MPP_CNTL_3, - BIT(3) | BIT(2) | BIT(1) | BIT(0) | /* MPP 24 */ - BIT(7) | BIT(6) | BIT(5) | BIT(4) | /* MPP 25 */ - BIT(11) | BIT(10) | BIT(9) | BIT(8) | /* MPP 26 */ - BIT(19) | BIT(18) | BIT(17) | BIT(16) | /* MPP 28 */ - BIT(23) | BIT(22) | BIT(21) | BIT(20) | /* MPP 29 */ - BIT(27) | BIT(26) | BIT(25) | BIT(24) | /* MPP 30 */ - BIT(31) | BIT(30) | BIT(29) | BIT(28)); /* MPP 31 */ - - /* - * Define GPP 25 (high), 26 (high), 28 (low), 29 (low), 30 (low), - * 31 (low) interrupt polarity input signal and level triggered - */ - mv64x60_clr_bits(&bh, MV64x60_GPP_LEVEL_CNTL, BIT(25) | BIT(26)); - mv64x60_set_bits(&bh, MV64x60_GPP_LEVEL_CNTL, - BIT(28) | BIT(29) | BIT(30) | BIT(31)); - mv64x60_clr_bits(&bh, MV64x60_GPP_IO_CNTL, - BIT(25) | BIT(26) | BIT(28) | BIT(29) | BIT(30) | - BIT(31)); - - /* Config GPP interrupt controller to respond to level trigger */ - mv64x60_set_bits(&bh, MV64360_COMM_ARBITER_CNTL, BIT(10)); - - /* - * Dismiss and then enable interrupt on GPP interrupt cause for CPU #0 - */ - mv64x60_write(&bh, MV64x60_GPP_INTR_CAUSE, - ~(BIT(25) | BIT(26) | BIT(28) | BIT(29) | BIT(30) | - BIT(31))); - mv64x60_set_bits(&bh, MV64x60_GPP_INTR_MASK, - BIT(25) | BIT(26) | BIT(28) | BIT(29) | BIT(30) | - BIT(31)); - - /* - * Dismiss and then enable interrupt on CPU #0 high cause register - * BIT27 summarizes GPP interrupts 24-31 - */ - mv64x60_set_bits(&bh, MV64360_IC_CPU0_INTR_MASK_HI, BIT(27)); - - if (ppc_md.progress) - ppc_md.progress("chestnut_setup_bridge: exit", 0); -} - -/************************************************************************** - * FUNCTION: chestnut_setup_arch - * - * DESCRIPTION: ppc_md machine configuration callback - * - ****/ -static void __init -chestnut_setup_arch(void) -{ - if (ppc_md.progress) - ppc_md.progress("chestnut_setup_arch: enter", 0); - - /* init to some ~sane value until calibrate_delay() runs */ - loops_per_jiffy = 50000000 / HZ; - - /* if the time base value is greater than bus freq/4 (the TB and - * decrementer tick rate) + signed integer rollover value, we - * can spend a fair amount of time waiting for the rollover to - * happen. To get around this, initialize the time base register - * to a "safe" value. - */ - set_tb(0, 0); - -#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_SDA2; -#endif - - /* - * Set up the L2CR register. - */ - _set_L2CR(_get_L2CR() | L2CR_L2E); - - chestnut_setup_bridge(); - chestnut_setup_peripherals(); - -#ifdef CONFIG_DUMMY_CONSOLE - conswitchp = &dummy_con; -#endif - -#if defined(CONFIG_SERIAL_8250) - chestnut_early_serial_map(); -#endif - - /* Identify the system */ - printk(KERN_INFO "System Identification: IBM 750FX/GX Eval Board\n"); - printk(KERN_INFO "IBM 750FX/GX port (C) 2004 MontaVista Software, Inc." - " (source@mvista.com)\n"); - - if (ppc_md.progress) - ppc_md.progress("chestnut_setup_arch: exit", 0); -} - -#ifdef CONFIG_MTD_PHYSMAP -static struct mtd_partition ptbl; - -static int __init -chestnut_setup_mtd(void) -{ - memset(&ptbl, 0, sizeof(ptbl)); - - ptbl.name = "User FS"; - ptbl.size = CHESTNUT_32BIT_SIZE; - - physmap_map.size = CHESTNUT_32BIT_SIZE; - physmap_set_partitions(&ptbl, 1); - return 0; -} - -arch_initcall(chestnut_setup_mtd); -#endif - -/************************************************************************** - * FUNCTION: chestnut_restart - * - * DESCRIPTION: ppc_md machine reset callback - * reset the board via the CPLD command register - * - ****/ -static void -chestnut_restart(char *cmd) -{ - volatile ulong i = 10000000; - - local_irq_disable(); - - /* - * Set CPLD Reg 3 bit 0 to 1 to allow MPP signals on reset to work - * - * MPP24 - board reset - */ - writeb(0x1, cpld_base + 3); - - /* GPP pin tied to MPP earlier */ - mv64x60_set_bits(&bh, MV64x60_GPP_VALUE_SET, BIT(24)); - - while (i-- > 0); - panic("restart failed\n"); -} - -static void -chestnut_halt(void) -{ - local_irq_disable(); - for (;;); - /* NOTREACHED */ -} - -static void -chestnut_power_off(void) -{ - chestnut_halt(); - /* NOTREACHED */ -} - -/************************************************************************** - * FUNCTION: chestnut_map_io - * - * DESCRIPTION: configure fixed memory-mapped IO - * - ****/ -static void __init -chestnut_map_io(void) -{ -#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB) - io_block_mapping(CHESTNUT_UART_BASE, CHESTNUT_UART_BASE, 0x100000, - _PAGE_IO); -#endif -} - -/************************************************************************** - * FUNCTION: chestnut_set_bat - * - * DESCRIPTION: configures a (temporary) bat mapping for early access to - * device I/O - * - ****/ -static __inline__ void -chestnut_set_bat(void) -{ - mb(); - mtspr(SPRN_DBAT3U, 0xf0001ffe); - mtspr(SPRN_DBAT3L, 0xf000002a); - mb(); -} - -/************************************************************************** - * FUNCTION: platform_init - * - * DESCRIPTION: main entry point for configuring board-specific machine - * callbacks - * - ****/ -void __init -platform_init(unsigned long r3, unsigned long r4, unsigned long r5, - unsigned long r6, unsigned long r7) -{ - parse_bootinfo(find_bootinfo()); - - /* Copy the kernel command line arguments to a safe place. */ - - if (r6) { - *(char *) (r7 + KERNELBASE) = 0; - strcpy(cmd_line, (char *) (r6 + KERNELBASE)); - } - - isa_mem_base = 0; - - ppc_md.setup_arch = chestnut_setup_arch; - ppc_md.show_cpuinfo = chestnut_show_cpuinfo; - ppc_md.init_IRQ = mv64360_init_irq; - ppc_md.get_irq = mv64360_get_irq; - ppc_md.init = NULL; - - ppc_md.find_end_of_memory = chestnut_find_end_of_memory; - ppc_md.setup_io_mappings = chestnut_map_io; - - ppc_md.restart = chestnut_restart; - ppc_md.power_off = chestnut_power_off; - ppc_md.halt = chestnut_halt; - - ppc_md.time_init = NULL; - ppc_md.set_rtc_time = NULL; - ppc_md.get_rtc_time = NULL; - ppc_md.calibrate_decr = chestnut_calibrate_decr; - - ppc_md.nvram_read_val = NULL; - ppc_md.nvram_write_val = NULL; - - ppc_md.heartbeat = NULL; - - bh.p_base = CONFIG_MV64X60_NEW_BASE; - - chestnut_set_bat(); - -#if defined(CONFIG_SERIAL_TEXT_DEBUG) - ppc_md.progress = gen550_progress; -#endif -#if defined(CONFIG_KGDB) - ppc_md.kgdb_map_scc = gen550_kgdb_map_scc; -#endif - - if (ppc_md.progress) - ppc_md.progress("chestnut_init(): exit", 0); -} |