diff options
Diffstat (limited to 'arch/ppc/platforms/prpmc750.c')
| -rw-r--r-- | arch/ppc/platforms/prpmc750.c | 360 |
1 files changed, 0 insertions, 360 deletions
diff --git a/arch/ppc/platforms/prpmc750.c b/arch/ppc/platforms/prpmc750.c deleted file mode 100644 index 93bd593cf95..00000000000 --- a/arch/ppc/platforms/prpmc750.c +++ /dev/null @@ -1,360 +0,0 @@ -/* - * Board setup routines for Motorola PrPMC750 - * - * Author: Matt Porter <mporter@mvista.com> - * - * 2001-2004 (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/pci.h> -#include <linux/kdev_t.h> -#include <linux/types.h> -#include <linux/major.h> -#include <linux/initrd.h> -#include <linux/console.h> -#include <linux/delay.h> -#include <linux/seq_file.h> -#include <linux/root_dev.h> -#include <linux/slab.h> -#include <linux/serial_reg.h> - -#include <asm/byteorder.h> -#include <asm/system.h> -#include <asm/pgtable.h> -#include <asm/page.h> -#include <asm/dma.h> -#include <asm/io.h> -#include <asm/irq.h> -#include <asm/machdep.h> -#include <asm/pci-bridge.h> -#include <asm/uaccess.h> -#include <asm/time.h> -#include <asm/open_pic.h> -#include <asm/bootinfo.h> -#include <asm/hawk.h> - -#include "prpmc750.h" - -extern unsigned long loops_per_jiffy; - -extern void gen550_progress(char *, unsigned short); - -static u_char prpmc750_openpic_initsenses[] __initdata = -{ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PRPMC750_INT_HOSTINT0 */ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PRPMC750_INT_UART */ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PRPMC750_INT_DEBUGINT */ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PRPMC750_INT_HAWK_WDT */ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PRPMC750_INT_UNUSED */ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PRPMC750_INT_ABORT */ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PRPMC750_INT_HOSTINT1 */ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PRPMC750_INT_HOSTINT2 */ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PRPMC750_INT_HOSTINT3 */ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PRPMC750_INT_PMC_INTA */ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PRPMC750_INT_PMC_INTB */ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PRPMC750_INT_PMC_INTC */ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PRPMC750_INT_PMC_INTD */ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PRPMC750_INT_UNUSED */ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PRPMC750_INT_UNUSED */ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PRPMC750_INT_UNUSED */ -}; - -/* - * Motorola PrPMC750/PrPMC800 in PrPMCBASE or PrPMC-Carrier - * Combined irq tables. Only Base has IDSEL 14, only Carrier has 21 and 22. - */ -static inline int -prpmc_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 - */ - { - {12, 0, 0, 0}, /* IDSEL 14 - Ethernet, base */ - {0, 0, 0, 0}, /* IDSEL 15 - unused */ - {10, 11, 12, 9}, /* IDSEL 16 - PMC A1, PMC1 */ - {10, 11, 12, 9}, /* IDSEL 17 - PrPMC-A-B, PMC2-B */ - {11, 12, 9, 10}, /* IDSEL 18 - PMC A1-B, PMC1-B */ - {0, 0, 0, 0}, /* IDSEL 19 - unused */ - {9, 10, 11, 12}, /* IDSEL 20 - P2P Bridge */ - {11, 12, 9, 10}, /* IDSEL 21 - PMC A2, carrier */ - {12, 9, 10, 11}, /* IDSEL 22 - PMC A2-B, carrier */ - }; - const long min_idsel = 14, max_idsel = 22, irqs_per_slot = 4; - return PCI_IRQ_TABLE_LOOKUP; -}; - -static void __init prpmc750_pcibios_fixup(void) -{ - struct pci_dev *dev; - unsigned short wtmp; - - /* - * Kludge to clean up after PPC6BUG which doesn't - * configure the CL5446 VGA card. Also the - * resource subsystem doesn't fixup the - * PCI mem resources on the CL5446. - */ - if ((dev = pci_get_device(PCI_VENDOR_ID_CIRRUS, - PCI_DEVICE_ID_CIRRUS_5446, 0))) { - dev->resource[0].start += PRPMC750_PCI_PHY_MEM_OFFSET; - dev->resource[0].end += PRPMC750_PCI_PHY_MEM_OFFSET; - pci_read_config_word(dev, PCI_COMMAND, &wtmp); - pci_write_config_word(dev, PCI_COMMAND, wtmp | 3); - /* Enable Color mode in MISC reg */ - outb(0x03, 0x3c2); - /* Select DRAM config reg */ - outb(0x0f, 0x3c4); - /* Set proper DRAM config */ - outb(0xdf, 0x3c5); - pci_dev_put(dev); - } -} - -void __init prpmc750_find_bridges(void) -{ - struct pci_controller *hose; - - hose = pcibios_alloc_controller(); - if (!hose) - return; - - hose->first_busno = 0; - hose->last_busno = 0xff; - hose->io_base_virt = (void *)PRPMC750_ISA_IO_BASE; - hose->pci_mem_offset = PRPMC750_PCI_PHY_MEM_OFFSET; - - pci_init_resource(&hose->io_resource, - PRPMC750_PCI_IO_START, - PRPMC750_PCI_IO_END, - IORESOURCE_IO, "PCI host bridge"); - - pci_init_resource(&hose->mem_resources[0], - PRPMC750_PROC_PCI_MEM_START, - PRPMC750_PROC_PCI_MEM_END, - IORESOURCE_MEM, "PCI host bridge"); - - hose->io_space.start = PRPMC750_PCI_IO_START; - hose->io_space.end = PRPMC750_PCI_IO_END; - hose->mem_space.start = PRPMC750_PCI_MEM_START; - hose->mem_space.end = PRPMC750_PCI_MEM_END - HAWK_MPIC_SIZE; - - if (hawk_init(hose, PRPMC750_HAWK_PPC_REG_BASE, - PRPMC750_PROC_PCI_MEM_START, - PRPMC750_PROC_PCI_MEM_END - HAWK_MPIC_SIZE, - PRPMC750_PROC_PCI_IO_START, PRPMC750_PROC_PCI_IO_END, - PRPMC750_PROC_PCI_MEM_END - HAWK_MPIC_SIZE + 1) - != 0) { - printk(KERN_CRIT "Could not initialize host bridge\n"); - } - - hose->last_busno = pciauto_bus_scan(hose, hose->first_busno); - - ppc_md.pcibios_fixup = prpmc750_pcibios_fixup; - ppc_md.pci_swizzle = common_swizzle; - ppc_md.pci_map_irq = prpmc_map_irq; -} -static int prpmc750_show_cpuinfo(struct seq_file *m) -{ - seq_printf(m, "machine\t\t: PrPMC750\n"); - - return 0; -} - -static void __init prpmc750_setup_arch(void) -{ - /* init to some ~sane value until calibrate_delay() runs */ - loops_per_jiffy = 50000000 / HZ; - - /* Lookup PCI host bridges */ - prpmc750_find_bridges(); - -#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 - - OpenPIC_InitSenses = prpmc750_openpic_initsenses; - OpenPIC_NumInitSenses = sizeof(prpmc750_openpic_initsenses); - - printk(KERN_INFO "Port by MontaVista Software, Inc. " - "(source@mvista.com)\n"); -} - -/* - * Compute the PrPMC750's bus speed using the baud clock as a - * reference. - */ -static unsigned long __init prpmc750_get_bus_speed(void) -{ - unsigned long tbl_start, tbl_end; - unsigned long current_state, old_state, bus_speed; - unsigned char lcr, dll, dlm; - int baud_divisor, count; - - /* Read the UART's baud clock divisor */ - lcr = readb(PRPMC750_SERIAL_0_LCR); - writeb(lcr | UART_LCR_DLAB, PRPMC750_SERIAL_0_LCR); - dll = readb(PRPMC750_SERIAL_0_DLL); - dlm = readb(PRPMC750_SERIAL_0_DLM); - writeb(lcr & ~UART_LCR_DLAB, PRPMC750_SERIAL_0_LCR); - baud_divisor = (dlm << 8) | dll; - - /* - * Use the baud clock divisor and base baud clock - * to determine the baud rate and use that as - * the number of baud clock edges we use for - * the time base sample. Make it half the baud - * rate. - */ - count = PRPMC750_BASE_BAUD / (baud_divisor * 16); - - /* Find the first edge of the baud clock */ - old_state = readb(PRPMC750_STATUS_REG) & PRPMC750_BAUDOUT_MASK; - do { - current_state = readb(PRPMC750_STATUS_REG) & - PRPMC750_BAUDOUT_MASK; - } while (old_state == current_state); - - old_state = current_state; - - /* Get the starting time base value */ - tbl_start = get_tbl(); - - /* - * Loop until we have found a number of edges equal - * to half the count (half the baud rate) - */ - do { - do { - current_state = readb(PRPMC750_STATUS_REG) & - PRPMC750_BAUDOUT_MASK; - } while (old_state == current_state); - old_state = current_state; - } while (--count); - - /* Get the ending time base value */ - tbl_end = get_tbl(); - - /* Compute bus speed */ - bus_speed = (tbl_end - tbl_start) * 128; - - return bus_speed; -} - -static void __init prpmc750_calibrate_decr(void) -{ - unsigned long freq; - int divisor = 4; - - freq = prpmc750_get_bus_speed(); - - tb_ticks_per_jiffy = freq / (HZ * divisor); - tb_to_us = mulhwu_scale_factor(freq / divisor, 1000000); -} - -static void prpmc750_restart(char *cmd) -{ - local_irq_disable(); - writeb(PRPMC750_MODRST_MASK, PRPMC750_MODRST_REG); - while (1) ; -} - -static void prpmc750_halt(void) -{ - local_irq_disable(); - while (1) ; -} - -static void prpmc750_power_off(void) -{ - prpmc750_halt(); -} - -static void __init prpmc750_init_IRQ(void) -{ - openpic_init(0); -} - -/* - * Set BAT 3 to map 0xf0000000 to end of physical memory space. - */ -static __inline__ void prpmc750_set_bat(void) -{ - mb(); - mtspr(SPRN_DBAT1U, 0xf0001ffe); - mtspr(SPRN_DBAT1L, 0xf000002a); - mb(); -} - -/* - * We need to read the Falcon/Hawk memory controller - * to properly determine this value - */ -static unsigned long __init prpmc750_find_end_of_memory(void) -{ - /* Read the memory size from the Hawk SMC */ - return hawk_get_mem_size(PRPMC750_HAWK_SMC_BASE); -} - -static void __init prpmc750_map_io(void) -{ - io_block_mapping(PRPMC750_ISA_IO_BASE, PRPMC750_ISA_IO_BASE, - 0x10000000, _PAGE_IO); -#if 0 - io_block_mapping(0xf0000000, 0xc0000000, 0x08000000, _PAGE_IO); -#endif - io_block_mapping(0xf8000000, 0xf8000000, 0x08000000, _PAGE_IO); -} - -void __init -platform_init(unsigned long r3, unsigned long r4, unsigned long r5, - unsigned long r6, unsigned long r7) -{ - parse_bootinfo(find_bootinfo()); - - /* Cover the Hawk registers with a BAT */ - prpmc750_set_bat(); - - isa_io_base = PRPMC750_ISA_IO_BASE; - isa_mem_base = PRPMC750_ISA_MEM_BASE; - pci_dram_offset = PRPMC750_PCI_DRAM_OFFSET; - - ppc_md.setup_arch = prpmc750_setup_arch; - ppc_md.show_cpuinfo = prpmc750_show_cpuinfo; - ppc_md.init_IRQ = prpmc750_init_IRQ; - ppc_md.get_irq = openpic_get_irq; - - ppc_md.find_end_of_memory = prpmc750_find_end_of_memory; - ppc_md.setup_io_mappings = prpmc750_map_io; - - ppc_md.restart = prpmc750_restart; - ppc_md.power_off = prpmc750_power_off; - ppc_md.halt = prpmc750_halt; - - /* PrPMC750 has no timekeeper part */ - ppc_md.time_init = NULL; - ppc_md.get_rtc_time = NULL; - ppc_md.set_rtc_time = NULL; - ppc_md.calibrate_decr = prpmc750_calibrate_decr; - -#ifdef CONFIG_SERIAL_TEXT_DEBUG - ppc_md.progress = gen550_progress; -#endif /* CONFIG_SERIAL_TEXT_DEBUG */ -} |