/* * arch/ppc/platforms/spruce_setup.c * * Board setup routines for IBM Spruce * * Authors: Johnnie Peters * Matt Porter * * 2001-2002 (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 #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 "cpc700.h" extern void spruce_init_IRQ(void); extern int spruce_get_irq(struct pt_regs *); extern void spruce_setup_hose(void); extern int pckbd_setkeycode(unsigned int, unsigned int); extern int pckbd_getkeycode(unsigned int); extern int pckbd_translate(unsigned char, unsigned char *, char); extern char pckbd_unexpected_up(unsigned char); extern void pckbd_leds(unsigned char); extern void pckbd_init_hw(void); extern unsigned char pckbd_sysrq_xlate[128]; extern char cmd_line[]; extern void gen550_progress(char *, unsigned short); extern void gen550_init(int, struct serial_struct *); /* * 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; } #ifdef CONFIG_SERIAL static void __init spruce_early_serial_map(void) { u32 baud_base; struct serial_struct serial_req; if (SPRUCE_UARTCLK_IS_33M(readb(SPRUCE_FPGA_REG_A))) baud_base = SPRUCE_BAUD_33M; else baud_base = SPRUCE_BAUD_30M; /* Setup serial port access */ memset(&serial_req, 0, sizeof(serial_req)); serial_req.baud_base = baud_base; serial_req.line = 0; serial_req.port = 0; serial_req.irq = 3; serial_req.flags = ASYNC_BOOT_AUTOCONF; serial_req.io_type = SERIAL_IO_MEM; serial_req.iomem_base = (u_char *)UART0_IO_BASE; serial_req.iomem_reg_shift = 0; #if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB) gen550_init(0, &serial_req); #endif if (early_serial_setup(&serial_req) != 0) printk("Early serial init of port 0 failed\n"); /* Assume early_serial_setup() doesn't modify serial_req */ serial_req.line = 1; serial_req.port = 1; serial_req.irq = 4; serial_req.iomem_base = (u_char *)UART1_IO_BASE; #if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB) gen550_init(1, &serial_req); #endif 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 = MKDEV(RAMDISK_MAJOR, 0); /* /dev/ram */ else #endif #ifdef CONFIG_ROOT_NFS ROOT_DEV = to_kdev_t(0x00FF); /* /dev/nfs pseudo device */ #else ROOT_DEV = to_kdev_t(0x0801); /* /dev/sda1 */ #endif #ifdef CONFIG_DUMMY_CONSOLE conswitchp = &dummy_con; #endif #ifdef CONFIG_SERIAL spruce_early_serial_map(); #endif /* Identify the system */ printk("System Identification: IBM Spruce\n"); printk("IBM Spruce port (C) 2001 MontaVista Software, Inc. (source@mvista.com)\n"); } static void spruce_restart(char *cmd) { __cli(); /* 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(" lis 3,0xfff0 \n\ ori 3,3,0x0100 \n\ mtspr 26,3 \n\ li 3,0 \n\ mtspr 27,3 \n\ rfi"); for(;;); } static void spruce_power_off(void) { for(;;); } static void spruce_halt(void) { spruce_restart(NULL); } static unsigned long __init spruce_find_end_of_memory(void) { return boot_mem_size; } static void __init spruce_map_io(void) { io_block_mapping(SPRUCE_PCI_IO_BASE, SPRUCE_PCI_PHY_IO_BASE, 0x08000000, _PAGE_IO); } unsigned char spruce_read_keyb_status(void) { unsigned long kbd_status; __raw_writel(0x00000088, 0xff500008); eieio(); __raw_writel(0x03000000, 0xff50000c); eieio(); asm volatile(" lis 7,0xff88 \n\ ori 7,7,0x8 \n\ lswi 6,7,0x8 \n\ mr %0,6" : "=r" (kbd_status) :: "6", "7"); __raw_writel(0x00000000, 0xff50000c); eieio(); return (unsigned char)(kbd_status >> 24); } unsigned char spruce_read_keyb_data(void) { unsigned long kbd_data; __raw_writel(0x00000088, 0xff500008); eieio(); __raw_writel(0x03000000, 0xff50000c); eieio(); asm volatile(" lis 7,0xff88 \n\ lswi 6,7,0x8 \n\ mr %0,6" : "=r" (kbd_data) :: "6", "7"); __raw_writel(0x00000000, 0xff50000c); eieio(); return (unsigned char)(kbd_data >> 24); } #if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB) /* * Set BAT 3 to map 0xf8000000 to end of physical memory space 1-to-1. */ static __inline__ void spruce_set_bat(void) { unsigned long bat3u, bat3l; asm volatile(" lis %0,0xf800 \n\ ori %1,%0,0x002a \n\ ori %0,%0,0x0ffe \n\ mtspr 0x21e,%0 \n\ mtspr 0x21f,%1 \n\ isync \n\ sync " : "=r" (bat3u), "=r" (bat3l)); } #endif void __init platform_init(unsigned long r3, unsigned long r4, unsigned long r5, unsigned long r6, unsigned long r7) { parse_bootinfo(find_bootinfo()); 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.find_end_of_memory = spruce_find_end_of_memory; 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; #if defined(CONFIG_SERIAL) && (defined(CONFIG_SERIAL_TEXT_DEBUG) \ || defined(CONFIG_KGDB)) spruce_set_bat(); spruce_early_serial_map(); #ifdef CONFIG_SERIAL_TEXT_DEBUG ppc_md.progress = gen550_progress; #endif /* CONFIG_SERIAL_TEXT_DEBUG */ ppc_md.early_serial_map = spruce_early_serial_map; #endif #ifdef CONFIG_VT /* Spruce has a PS2 style keyboard */ ppc_md.kbd_setkeycode = pckbd_setkeycode; ppc_md.kbd_getkeycode = pckbd_getkeycode; ppc_md.kbd_translate = pckbd_translate; ppc_md.kbd_unexpected_up = pckbd_unexpected_up; ppc_md.kbd_leds = pckbd_leds; ppc_md.kbd_init_hw = pckbd_init_hw; #ifdef CONFIG_MAGIC_SYSRQ ppc_md.ppc_kbd_sysrq_xlate = pckbd_sysrq_xlate; SYSRQ_KEY = 0x54; #endif #endif }