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Diffstat (limited to 'arch/ppc/platforms/sandpoint.c')
| -rw-r--r-- | arch/ppc/platforms/sandpoint.c | 651 |
1 files changed, 0 insertions, 651 deletions
diff --git a/arch/ppc/platforms/sandpoint.c b/arch/ppc/platforms/sandpoint.c deleted file mode 100644 index b4897bd..0000000 --- a/arch/ppc/platforms/sandpoint.c +++ /dev/null @@ -1,651 +0,0 @@ -/* - * Board setup routines for the Motorola SPS Sandpoint Test Platform. - * - * Author: Mark A. Greer - * mgreer@mvista.com - * - * 2000-2003 (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. - */ - -/* - * This file adds support for the Motorola SPS Sandpoint Test Platform. - * These boards have a PPMC slot for the processor so any combination - * of cpu and host bridge can be attached. This port is for an 8240 PPMC - * module from Motorola SPS and other closely related cpu/host bridge - * combinations (e.g., 750/755/7400 with MPC107 host bridge). - * The sandpoint itself has a Windbond 83c553 (PCI-ISA bridge, 2 DMA ctlrs, 2 - * cascaded 8259 interrupt ctlrs, 8254 Timer/Counter, and an IDE ctlr), a - * National 87308 (RTC, 2 UARTs, Keyboard & mouse ctlrs, and a floppy ctlr), - * and 4 PCI slots (only 2 of which are usable; the other 2 are keyed for 3.3V - * but are really 5V). - * - * The firmware on the sandpoint is called DINK (not my acronym :). This port - * depends on DINK to do some basic initialization (e.g., initialize the memory - * ctlr) and to ensure that the processor is using MAP B (CHRP map). - * - * The switch settings for the Sandpoint board MUST be as follows: - * S3: down - * S4: up - * S5: up - * S6: down - * - * 'down' is in the direction from the PCI slots towards the PPMC slot; - * 'up' is in the direction from the PPMC slot towards the PCI slots. - * Be careful, the way the sandpoint board is installed in XT chasses will - * make the directions reversed. - * - * Since Motorola listened to our suggestions for improvement, we now have - * the Sandpoint X3 board. All of the PCI slots are available, it uses - * the serial interrupt interface (just a hardware thing we need to - * configure properly). - * - * Use the default X3 switch settings. The interrupts are then: - * EPIC Source - * 0 SIOINT (8259, active low) - * 1 PCI #1 - * 2 PCI #2 - * 3 PCI #3 - * 4 PCI #4 - * 7 Winbond INTC (IDE interrupt) - * 8 Winbond INTD (IDE interrupt) - * - * - * Motorola has finally released a version of DINK32 that correctly - * (seemingly) initializes the memory controller correctly, regardless - * of the amount of memory in the system. Once a method of determining - * what version of DINK initializes the system for us, if applicable, is - * found, we can hopefully stop hardcoding 32MB of RAM. - */ - -#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/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> /* for linux/serial_core.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/time.h> -#include <asm/dma.h> -#include <asm/io.h> -#include <asm/machdep.h> -#include <asm/prom.h> -#include <asm/smp.h> -#include <asm/vga.h> -#include <asm/open_pic.h> -#include <asm/i8259.h> -#include <asm/todc.h> -#include <asm/bootinfo.h> -#include <asm/mpc10x.h> -#include <asm/pci-bridge.h> -#include <asm/kgdb.h> -#include <asm/ppc_sys.h> - -#include "sandpoint.h" - -/* Set non-zero if an X2 Sandpoint detected. */ -static int sandpoint_is_x2; - -unsigned char __res[sizeof(bd_t)]; - -static void sandpoint_halt(void); -static void sandpoint_probe_type(void); - -/* - * Define all of the IRQ senses and polarities. Taken from the - * Sandpoint X3 User's manual. - */ -static u_char sandpoint_openpic_initsenses[] __initdata = { - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* 0: SIOINT */ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* 2: PCI Slot 1 */ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* 3: PCI Slot 2 */ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* 4: PCI Slot 3 */ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* 5: PCI Slot 4 */ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* 8: IDE (INT C) */ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE) /* 9: IDE (INT D) */ -}; - -/* - * Motorola SPS Sandpoint interrupt routing. - */ -static inline int -x3_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 - */ - { - { 16, 0, 0, 0 }, /* IDSEL 11 - i8259 on Winbond */ - { 0, 0, 0, 0 }, /* IDSEL 12 - unused */ - { 18, 21, 20, 19 }, /* IDSEL 13 - PCI slot 1 */ - { 19, 18, 21, 20 }, /* IDSEL 14 - PCI slot 2 */ - { 20, 19, 18, 21 }, /* IDSEL 15 - PCI slot 3 */ - { 21, 20, 19, 18 }, /* IDSEL 16 - PCI slot 4 */ - }; - - const long min_idsel = 11, max_idsel = 16, irqs_per_slot = 4; - return PCI_IRQ_TABLE_LOOKUP; -} - -static inline int -x2_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 - */ - { - { 18, 0, 0, 0 }, /* IDSEL 11 - i8259 on Windbond */ - { 0, 0, 0, 0 }, /* IDSEL 12 - unused */ - { 16, 17, 18, 19 }, /* IDSEL 13 - PCI slot 1 */ - { 17, 18, 19, 16 }, /* IDSEL 14 - PCI slot 2 */ - { 18, 19, 16, 17 }, /* IDSEL 15 - PCI slot 3 */ - { 19, 16, 17, 18 }, /* IDSEL 16 - PCI slot 4 */ - }; - - const long min_idsel = 11, max_idsel = 16, irqs_per_slot = 4; - return PCI_IRQ_TABLE_LOOKUP; -} - -static void __init -sandpoint_setup_winbond_83553(struct pci_controller *hose) -{ - int devfn; - - /* - * Route IDE interrupts directly to the 8259's IRQ 14 & 15. - * We can't route the IDE interrupt to PCI INTC# or INTD# because those - * woule interfere with the PMC's INTC# and INTD# lines. - */ - /* - * Winbond Fcn 0 - */ - devfn = PCI_DEVFN(11,0); - - early_write_config_byte(hose, - 0, - devfn, - 0x43, /* IDE Interrupt Routing Control */ - 0xef); - early_write_config_word(hose, - 0, - devfn, - 0x44, /* PCI Interrupt Routing Control */ - 0x0000); - - /* Want ISA memory cycles to be forwarded to PCI bus */ - early_write_config_byte(hose, - 0, - devfn, - 0x48, /* ISA-to-PCI Addr Decoder Control */ - 0xf0); - - /* Enable Port 92. */ - early_write_config_byte(hose, - 0, - devfn, - 0x4e, /* AT System Control Register */ - 0x06); - /* - * Winbond Fcn 1 - */ - devfn = PCI_DEVFN(11,1); - - /* Put IDE controller into native mode. */ - early_write_config_byte(hose, - 0, - devfn, - 0x09, /* Programming interface Register */ - 0x8f); - - /* Init IRQ routing, enable both ports, disable fast 16 */ - early_write_config_dword(hose, - 0, - devfn, - 0x40, /* IDE Control/Status Register */ - 0x00ff0011); - return; -} - -/* On the sandpoint X2, we must avoid sending configuration cycles to - * device #12 (IDSEL addr = AD12). - */ -static int -x2_exclude_device(u_char bus, u_char devfn) -{ - if ((bus == 0) && (PCI_SLOT(devfn) == SANDPOINT_HOST_BRIDGE_IDSEL)) - return PCIBIOS_DEVICE_NOT_FOUND; - else - return PCIBIOS_SUCCESSFUL; -} - -static void __init -sandpoint_find_bridges(void) -{ - struct pci_controller *hose; - - hose = pcibios_alloc_controller(); - - if (!hose) - return; - - hose->first_busno = 0; - hose->last_busno = 0xff; - - if (mpc10x_bridge_init(hose, - MPC10X_MEM_MAP_B, - MPC10X_MEM_MAP_B, - MPC10X_MAPB_EUMB_BASE) == 0) { - - /* Do early winbond init, then scan PCI bus */ - sandpoint_setup_winbond_83553(hose); - hose->last_busno = pciauto_bus_scan(hose, hose->first_busno); - - ppc_md.pcibios_fixup = NULL; - ppc_md.pcibios_fixup_bus = NULL; - ppc_md.pci_swizzle = common_swizzle; - if (sandpoint_is_x2) { - ppc_md.pci_map_irq = x2_map_irq; - ppc_md.pci_exclude_device = x2_exclude_device; - } else - ppc_md.pci_map_irq = x3_map_irq; - } - else { - if (ppc_md.progress) - ppc_md.progress("Bridge init failed", 0x100); - printk("Host bridge init failed\n"); - } - - return; -} - -static void __init -sandpoint_setup_arch(void) -{ - /* Probe for Sandpoint model */ - sandpoint_probe_type(); - if (sandpoint_is_x2) - epic_serial_mode = 0; - - loops_per_jiffy = 100000000 / HZ; - -#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 - - /* Lookup PCI host bridges */ - sandpoint_find_bridges(); - - if (strncmp (cur_ppc_sys_spec->ppc_sys_name, "8245", 4) == 0) - { - bd_t *bp = (bd_t *)__res; - struct plat_serial8250_port *pdata; - - pdata = (struct plat_serial8250_port *) ppc_sys_get_pdata(MPC10X_UART0); - if (pdata) - { - pdata[0].uartclk = bp->bi_busfreq; - } - -#ifdef CONFIG_SANDPOINT_ENABLE_UART1 - pdata = (struct plat_serial8250_port *) ppc_sys_get_pdata(MPC10X_UART1); - if (pdata) - { - pdata[0].uartclk = bp->bi_busfreq; - } -#else - ppc_sys_device_remove(MPC10X_UART1); -#endif - } - - printk(KERN_INFO "Motorola SPS Sandpoint Test Platform\n"); - printk(KERN_INFO "Port by MontaVista Software, Inc. (source@mvista.com)\n"); - - /* DINK32 12.3 and below do not correctly enable any caches. - * We will do this now with good known values. Future versions - * of DINK32 are supposed to get this correct. - */ - if (cpu_has_feature(CPU_FTR_SPEC7450)) - /* 745x is different. We only want to pass along enable. */ - _set_L2CR(L2CR_L2E); - else if (cpu_has_feature(CPU_FTR_L2CR)) - /* All modules have 1MB of L2. We also assume that an - * L2 divisor of 3 will work. - */ - _set_L2CR(L2CR_L2E | L2CR_L2SIZ_1MB | L2CR_L2CLK_DIV3 - | L2CR_L2RAM_PIPE | L2CR_L2OH_1_0 | L2CR_L2DF); -#if 0 - /* Untested right now. */ - if (cpu_has_feature(CPU_FTR_L3CR)) { - /* Magic value. */ - _set_L3CR(0x8f032000); - } -#endif -} - -#define SANDPOINT_87308_CFG_ADDR 0x15c -#define SANDPOINT_87308_CFG_DATA 0x15d - -#define SANDPOINT_87308_CFG_INB(addr, byte) { \ - outb((addr), SANDPOINT_87308_CFG_ADDR); \ - (byte) = inb(SANDPOINT_87308_CFG_DATA); \ -} - -#define SANDPOINT_87308_CFG_OUTB(addr, byte) { \ - outb((addr), SANDPOINT_87308_CFG_ADDR); \ - outb((byte), SANDPOINT_87308_CFG_DATA); \ -} - -#define SANDPOINT_87308_SELECT_DEV(dev_num) { \ - SANDPOINT_87308_CFG_OUTB(0x07, (dev_num)); \ -} - -#define SANDPOINT_87308_DEV_ENABLE(dev_num) { \ - SANDPOINT_87308_SELECT_DEV(dev_num); \ - SANDPOINT_87308_CFG_OUTB(0x30, 0x01); \ -} - -/* - * To probe the Sandpoint type, we need to check for a connection between GPIO - * pins 6 and 7 on the NS87308 SuperIO. - */ -static void __init sandpoint_probe_type(void) -{ - u8 x; - /* First, ensure that the GPIO pins are enabled. */ - SANDPOINT_87308_SELECT_DEV(0x07); /* Select GPIO logical device */ - SANDPOINT_87308_CFG_OUTB(0x60, 0x07); /* Base address 0x700 */ - SANDPOINT_87308_CFG_OUTB(0x61, 0x00); - SANDPOINT_87308_CFG_OUTB(0x30, 0x01); /* Enable */ - - /* Now, set pin 7 to output and pin 6 to input. */ - outb((inb(0x701) | 0x80) & 0xbf, 0x701); - /* Set push-pull output */ - outb(inb(0x702) | 0x80, 0x702); - /* Set pull-up on input */ - outb(inb(0x703) | 0x40, 0x703); - /* Set output high and check */ - x = inb(0x700); - outb(x | 0x80, 0x700); - x = inb(0x700); - sandpoint_is_x2 = ! (x & 0x40); - if (ppc_md.progress && sandpoint_is_x2) - ppc_md.progress("High output says X2", 0); - /* Set output low and check */ - outb(x & 0x7f, 0x700); - sandpoint_is_x2 |= inb(0x700) & 0x40; - if (ppc_md.progress && sandpoint_is_x2) - ppc_md.progress("Low output says X2", 0); - if (ppc_md.progress && ! sandpoint_is_x2) - ppc_md.progress("Sandpoint is X3", 0); -} - -/* - * Fix IDE interrupts. - */ -static int __init -sandpoint_fix_winbond_83553(void) -{ - /* Make some 8259 interrupt level sensitive */ - outb(0xe0, 0x4d0); - outb(0xde, 0x4d1); - - return 0; -} - -arch_initcall(sandpoint_fix_winbond_83553); - -/* - * Initialize the ISA devices on the Nat'l PC87308VUL SuperIO chip. - */ -static int __init -sandpoint_setup_natl_87308(void) -{ - u_char reg; - - /* - * Enable all the devices on the Super I/O chip. - */ - SANDPOINT_87308_SELECT_DEV(0x00); /* Select kbd logical device */ - SANDPOINT_87308_CFG_OUTB(0xf0, 0x00); /* Set KBC clock to 8 Mhz */ - SANDPOINT_87308_DEV_ENABLE(0x00); /* Enable keyboard */ - SANDPOINT_87308_DEV_ENABLE(0x01); /* Enable mouse */ - SANDPOINT_87308_DEV_ENABLE(0x02); /* Enable rtc */ - SANDPOINT_87308_DEV_ENABLE(0x03); /* Enable fdc (floppy) */ - SANDPOINT_87308_DEV_ENABLE(0x04); /* Enable parallel */ - SANDPOINT_87308_DEV_ENABLE(0x05); /* Enable UART 2 */ - SANDPOINT_87308_CFG_OUTB(0xf0, 0x82); /* Enable bank select regs */ - SANDPOINT_87308_DEV_ENABLE(0x06); /* Enable UART 1 */ - SANDPOINT_87308_CFG_OUTB(0xf0, 0x82); /* Enable bank select regs */ - - /* Set up floppy in PS/2 mode */ - outb(0x09, SIO_CONFIG_RA); - reg = inb(SIO_CONFIG_RD); - reg = (reg & 0x3F) | 0x40; - outb(reg, SIO_CONFIG_RD); - outb(reg, SIO_CONFIG_RD); /* Have to write twice to change! */ - - return 0; -} - -arch_initcall(sandpoint_setup_natl_87308); - -static int __init -sandpoint_request_io(void) -{ - request_region(0x00,0x20,"dma1"); - request_region(0x20,0x20,"pic1"); - request_region(0x40,0x20,"timer"); - request_region(0x80,0x10,"dma page reg"); - request_region(0xa0,0x20,"pic2"); - request_region(0xc0,0x20,"dma2"); - - return 0; -} - -arch_initcall(sandpoint_request_io); - -/* - * Interrupt setup and service. Interrupts on the Sandpoint come - * from the four PCI slots plus the 8259 in the Winbond Super I/O (SIO). - * The 8259 is cascaded from EPIC IRQ0, IRQ1-4 map to PCI slots 1-4, - * IDE is on EPIC 7 and 8. - */ -static void __init -sandpoint_init_IRQ(void) -{ - int i; - - OpenPIC_InitSenses = sandpoint_openpic_initsenses; - OpenPIC_NumInitSenses = sizeof(sandpoint_openpic_initsenses); - - mpc10x_set_openpic(); - openpic_hookup_cascade(sandpoint_is_x2 ? 17 : NUM_8259_INTERRUPTS, "82c59 cascade", - i8259_irq); - - /* - * The EPIC allows for a read in the range of 0xFEF00000 -> - * 0xFEFFFFFF to generate a PCI interrupt-acknowledge transaction. - */ - i8259_init(0xfef00000, 0); -} - -static unsigned long __init -sandpoint_find_end_of_memory(void) -{ - bd_t *bp = (bd_t *)__res; - - if (bp->bi_memsize) - return bp->bi_memsize; - - /* DINK32 13.0 correctly initializes things, so iff you use - * this you _should_ be able to change this instead of a - * hardcoded value. */ -#if 0 - return mpc10x_get_mem_size(MPC10X_MEM_MAP_B); -#else - return 32*1024*1024; -#endif -} - -static void __init -sandpoint_map_io(void) -{ - io_block_mapping(0xfe000000, 0xfe000000, 0x02000000, _PAGE_IO); -} - -static void -sandpoint_restart(char *cmd) -{ - local_irq_disable(); - - /* Set exception prefix high - to the firmware */ - _nmask_and_or_msr(0, MSR_IP); - - /* Reset system via Port 92 */ - outb(0x00, 0x92); - outb(0x01, 0x92); - for(;;); /* Spin until reset happens */ -} - -static void -sandpoint_power_off(void) -{ - local_irq_disable(); - for(;;); /* No way to shut power off with software */ - /* NOTREACHED */ -} - -static void -sandpoint_halt(void) -{ - sandpoint_power_off(); - /* NOTREACHED */ -} - -static int -sandpoint_show_cpuinfo(struct seq_file *m) -{ - seq_printf(m, "vendor\t\t: Motorola SPS\n"); - seq_printf(m, "machine\t\t: Sandpoint\n"); - - return 0; -} - -/* - * Set BAT 3 to map 0xf8000000 to end of physical memory space 1-to-1. - */ -static __inline__ void -sandpoint_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)); -} - -TODC_ALLOC(); - -void __init -platform_init(unsigned long r3, unsigned long r4, unsigned long r5, - unsigned long r6, unsigned long r7) -{ - parse_bootinfo(find_bootinfo()); - - /* ASSUMPTION: If both r3 (bd_t pointer) and r6 (cmdline pointer) - * are non-zero, then we should use the board info from the bd_t - * structure and the cmdline pointed to by r6 instead of the - * information from birecs, if any. Otherwise, use the information - * from birecs as discovered by the preceding call to - * parse_bootinfo(). This rule should work with both PPCBoot, which - * uses a bd_t board info structure, and the kernel boot wrapper, - * which uses birecs. - */ - if (r3 && r6) { - /* copy board info structure */ - memcpy( (void *)__res,(void *)(r3+KERNELBASE), sizeof(bd_t) ); - /* copy command line */ - *(char *)(r7+KERNELBASE) = 0; - strcpy(cmd_line, (char *)(r6+KERNELBASE)); - } - -#ifdef CONFIG_BLK_DEV_INITRD - /* take care of initrd if we have one */ - if (r4) { - initrd_start = r4 + KERNELBASE; - initrd_end = r5 + KERNELBASE; - } -#endif /* CONFIG_BLK_DEV_INITRD */ - - /* Map in board regs, etc. */ - sandpoint_set_bat(); - - isa_io_base = MPC10X_MAPB_ISA_IO_BASE; - isa_mem_base = MPC10X_MAPB_ISA_MEM_BASE; - pci_dram_offset = MPC10X_MAPB_DRAM_OFFSET; - ISA_DMA_THRESHOLD = 0x00ffffff; - DMA_MODE_READ = 0x44; - DMA_MODE_WRITE = 0x48; - ppc_do_canonicalize_irqs = 1; - - ppc_md.setup_arch = sandpoint_setup_arch; - ppc_md.show_cpuinfo = sandpoint_show_cpuinfo; - ppc_md.init_IRQ = sandpoint_init_IRQ; - ppc_md.get_irq = openpic_get_irq; - - ppc_md.restart = sandpoint_restart; - ppc_md.power_off = sandpoint_power_off; - ppc_md.halt = sandpoint_halt; - - ppc_md.find_end_of_memory = sandpoint_find_end_of_memory; - ppc_md.setup_io_mappings = sandpoint_map_io; - - TODC_INIT(TODC_TYPE_PC97307, 0x70, 0x00, 0x71, 8); - 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 = todc_calibrate_decr; - - ppc_md.nvram_read_val = todc_mc146818_read_val; - ppc_md.nvram_write_val = todc_mc146818_write_val; - -#ifdef CONFIG_KGDB - ppc_md.kgdb_map_scc = gen550_kgdb_map_scc; -#endif -#ifdef CONFIG_SERIAL_TEXT_DEBUG - ppc_md.progress = gen550_progress; -#endif -} |
