+++ /dev/null
-/*
- * Board and PCI setup routines for IBM Spruce
- *
- * Author: MontaVista Software <source@mvista.com>
- *
- * 2000-2004 (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/serial.h>
-#include <linux/tty.h>
-#include <linux/serial_core.h>
-#include <linux/serial_8250.h>
-
-#include <asm/system.h>
-#include <asm/pgtable.h>
-#include <asm/page.h>
-#include <asm/dma.h>
-#include <asm/io.h>
-#include <asm/machdep.h>
-#include <asm/time.h>
-#include <asm/todc.h>
-#include <asm/bootinfo.h>
-#include <asm/kgdb.h>
-
-#include <syslib/cpc700.h>
-
-#include "spruce.h"
-
-static inline int
-spruce_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 3 */
- {24, 25, 26, 23}, /* IDSEL 2 - PCI slot 2 */
- {25, 26, 23, 24}, /* IDSEL 3 - PCI slot 1 */
- {26, 23, 24, 25}, /* IDSEL 4 - PCI slot 0 */
- };
-
- const long min_idsel = 1, max_idsel = 4, irqs_per_slot = 4;
- return PCI_IRQ_TABLE_LOOKUP;
-}
-
-static void __init
-spruce_setup_hose(void)
-{
- struct pci_controller *hose;
-
- /* Setup hose */
- hose = pcibios_alloc_controller();
- if (!hose)
- return;
-
- hose->first_busno = 0;
- hose->last_busno = 0xff;
-
- pci_init_resource(&hose->io_resource,
- SPRUCE_PCI_LOWER_IO,
- SPRUCE_PCI_UPPER_IO,
- IORESOURCE_IO,
- "PCI host bridge");
-
- pci_init_resource(&hose->mem_resources[0],
- SPRUCE_PCI_LOWER_MEM,
- SPRUCE_PCI_UPPER_MEM,
- IORESOURCE_MEM,
- "PCI host bridge");
-
- hose->io_space.start = SPRUCE_PCI_LOWER_IO;
- hose->io_space.end = SPRUCE_PCI_UPPER_IO;
- hose->mem_space.start = SPRUCE_PCI_LOWER_MEM;
- hose->mem_space.end = SPRUCE_PCI_UPPER_MEM;
- hose->io_base_virt = (void *)SPRUCE_ISA_IO_BASE;
-
- setup_indirect_pci(hose,
- SPRUCE_PCI_CONFIG_ADDR,
- SPRUCE_PCI_CONFIG_DATA);
-
- hose->last_busno = pciauto_bus_scan(hose, hose->first_busno);
-
- ppc_md.pci_swizzle = common_swizzle;
- ppc_md.pci_map_irq = spruce_map_irq;
-}
-
-/*
- * CPC700 PIC interrupt programming table
- *
- * First entry is the sensitivity (level/edge), second is the polarity.
- */
-unsigned int cpc700_irq_assigns[32][2] = {
- { 1, 1 }, /* IRQ 0: ECC Correctable Error - rising edge */
- { 1, 1 }, /* IRQ 1: PCI Write Mem Range - rising edge */
- { 0, 1 }, /* IRQ 2: PCI Write Command Reg - active high */
- { 0, 1 }, /* IRQ 3: UART 0 - active high */
- { 0, 1 }, /* IRQ 4: UART 1 - active high */
- { 0, 1 }, /* IRQ 5: ICC 0 - active high */
- { 0, 1 }, /* IRQ 6: ICC 1 - active high */
- { 0, 1 }, /* IRQ 7: GPT Compare 0 - active high */
- { 0, 1 }, /* IRQ 8: GPT Compare 1 - active high */
- { 0, 1 }, /* IRQ 9: GPT Compare 2 - active high */
- { 0, 1 }, /* IRQ 10: GPT Compare 3 - active high */
- { 0, 1 }, /* IRQ 11: GPT Compare 4 - active high */
- { 0, 1 }, /* IRQ 12: GPT Capture 0 - active high */
- { 0, 1 }, /* IRQ 13: GPT Capture 1 - active high */
- { 0, 1 }, /* IRQ 14: GPT Capture 2 - active high */
- { 0, 1 }, /* IRQ 15: GPT Capture 3 - active high */
- { 0, 1 }, /* IRQ 16: GPT Capture 4 - active high */
- { 0, 0 }, /* IRQ 17: Reserved */
- { 0, 0 }, /* IRQ 18: Reserved */
- { 0, 0 }, /* IRQ 19: Reserved */
- { 0, 1 }, /* IRQ 20: FPGA EXT_IRQ0 - active high */
- { 1, 1 }, /* IRQ 21: Mouse - rising edge */
- { 1, 1 }, /* IRQ 22: Keyboard - rising edge */
- { 0, 0 }, /* IRQ 23: PCI Slot 3 - active low */
- { 0, 0 }, /* IRQ 24: PCI Slot 2 - active low */
- { 0, 0 }, /* IRQ 25: PCI Slot 1 - active low */
- { 0, 0 }, /* IRQ 26: PCI Slot 0 - active low */
-};
-
-static void __init
-spruce_calibrate_decr(void)
-{
- int freq, divisor = 4;
-
- /* determine processor bus speed */
- freq = SPRUCE_BUS_SPEED;
- tb_ticks_per_jiffy = freq / HZ / divisor;
- tb_to_us = mulhwu_scale_factor(freq/divisor, 1000000);
-}
-
-static int
-spruce_show_cpuinfo(struct seq_file *m)
-{
- seq_printf(m, "vendor\t\t: IBM\n");
- seq_printf(m, "machine\t\t: Spruce\n");
-
- return 0;
-}
-
-static void __init
-spruce_early_serial_map(void)
-{
- u32 uart_clk;
- struct uart_port serial_req;
-
- if (SPRUCE_UARTCLK_IS_33M(readb(SPRUCE_FPGA_REG_A)))
- uart_clk = SPRUCE_BAUD_33M * 16;
- else
- uart_clk = SPRUCE_BAUD_30M * 16;
-
- /* Setup serial port access */
- memset(&serial_req, 0, sizeof(serial_req));
- serial_req.uartclk = uart_clk;
- serial_req.irq = UART0_INT;
- serial_req.flags = UPF_BOOT_AUTOCONF;
- serial_req.iotype = UPIO_MEM;
- serial_req.membase = (u_char *)UART0_IO_BASE;
- serial_req.regshift = 0;
-
-#if defined(CONFIG_KGDB) || defined(CONFIG_SERIAL_TEXT_DEBUG)
- gen550_init(0, &serial_req);
-#endif
-#ifdef CONFIG_SERIAL_8250
- if (early_serial_setup(&serial_req) != 0)
- printk("Early serial init of port 0 failed\n");
-#endif
-
- /* Assume early_serial_setup() doesn't modify serial_req */
- serial_req.line = 1;
- serial_req.irq = UART1_INT;
- serial_req.membase = (u_char *)UART1_IO_BASE;
-
-#if defined(CONFIG_KGDB) || defined(CONFIG_SERIAL_TEXT_DEBUG)
- gen550_init(1, &serial_req);
-#endif
-#ifdef CONFIG_SERIAL_8250
- if (early_serial_setup(&serial_req) != 0)
- printk("Early serial init of port 1 failed\n");
-#endif
-}
-
-TODC_ALLOC();
-
-static void __init
-spruce_setup_arch(void)
-{
- /* Setup TODC access */
- TODC_INIT(TODC_TYPE_DS1643, 0, 0, SPRUCE_RTC_BASE_ADDR, 8);
-
- /* init to some ~sane value until calibrate_delay() runs */
- loops_per_jiffy = 50000000 / HZ;
-
- /* Setup PCI host bridge */
- spruce_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_SDA1;
-#endif
-
- /* Identify the system */
- printk(KERN_INFO "System Identification: IBM Spruce\n");
- printk(KERN_INFO "Port by MontaVista Software, Inc. (source@mvista.com)\n");
-}
-
-static void
-spruce_restart(char *cmd)
-{
- local_irq_disable();
-
- /* SRR0 has system reset vector, SRR1 has default MSR value */
- /* rfi restores MSR from SRR1 and sets the PC to the SRR0 value */
- __asm__ __volatile__
- ("\n\
- lis 3,0xfff0 \n\
- ori 3,3,0x0100 \n\
- mtspr 26,3 \n\
- li 3,0 \n\
- mtspr 27,3 \n\
- rfi \n\
- ");
- for(;;);
-}
-
-static void
-spruce_power_off(void)
-{
- for(;;);
-}
-
-static void
-spruce_halt(void)
-{
- spruce_restart(NULL);
-}
-
-static void __init
-spruce_map_io(void)
-{
- io_block_mapping(SPRUCE_PCI_IO_BASE, SPRUCE_PCI_PHY_IO_BASE,
- 0x08000000, _PAGE_IO);
-}
-
-/*
- * Set BAT 3 to map 0xf8000000 to end of physical memory space 1-to-1.
- */
-static __inline__ void
-spruce_set_bat(void)
-{
- mb();
- mtspr(SPRN_DBAT1U, 0xf8000ffe);
- mtspr(SPRN_DBAT1L, 0xf800002a);
- mb();
-}
-
-void __init
-platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
- unsigned long r6, unsigned long r7)
-{
- parse_bootinfo(find_bootinfo());
-
- /* Map in board regs, etc. */
- spruce_set_bat();
-
- isa_io_base = SPRUCE_ISA_IO_BASE;
- pci_dram_offset = SPRUCE_PCI_SYS_MEM_BASE;
-
- ppc_md.setup_arch = spruce_setup_arch;
- ppc_md.show_cpuinfo = spruce_show_cpuinfo;
- ppc_md.init_IRQ = cpc700_init_IRQ;
- ppc_md.get_irq = cpc700_get_irq;
-
- ppc_md.setup_io_mappings = spruce_map_io;
-
- ppc_md.restart = spruce_restart;
- ppc_md.power_off = spruce_power_off;
- ppc_md.halt = spruce_halt;
-
- 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.calibrate_decr = spruce_calibrate_decr;
-
- ppc_md.nvram_read_val = todc_direct_read_val;
- ppc_md.nvram_write_val = todc_direct_write_val;
-
- spruce_early_serial_map();
-
-#ifdef CONFIG_SERIAL_TEXT_DEBUG
- ppc_md.progress = gen550_progress;
-#endif /* CONFIG_SERIAL_TEXT_DEBUG */
-#ifdef CONFIG_KGDB
- ppc_md.kgdb_map_scc = gen550_kgdb_map_scc;
-#endif
-}
git.openpandora.org / pandora-kernel.git / blobdiff