diff options
Diffstat (limited to 'arch/ppc/platforms/powerpmc250.c')
| -rw-r--r-- | arch/ppc/platforms/powerpmc250.c | 378 |
1 files changed, 0 insertions, 378 deletions
diff --git a/arch/ppc/platforms/powerpmc250.c b/arch/ppc/platforms/powerpmc250.c deleted file mode 100644 index 162dc85ff7b..00000000000 --- a/arch/ppc/platforms/powerpmc250.c +++ /dev/null @@ -1,378 +0,0 @@ -/* - * Board setup routines for Force PowerPMC-250 Processor PMC - * - * Author: Troy Benjegerdes <tbenjegerdes@mvista.com> - * Borrowed heavily from prpmc750_*.c by - * Matt Porter <mporter@mvista.com> - * - * 2001 (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/slab.h> -#include <linux/seq_file.h> -#include <linux/root_dev.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/time.h> -#include <platforms/powerpmc250.h> -#include <asm/open_pic.h> -#include <asm/pci-bridge.h> -#include <asm/mpc10x.h> -#include <asm/uaccess.h> -#include <asm/bootinfo.h> - -extern void powerpmc250_find_bridges(void); -extern unsigned long loops_per_jiffy; - -static u_char powerpmc250_openpic_initsenses[] __initdata = -{ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 1, /* PMC INTA (also MPC107 output interrupt INTA) */ - 1, /* PMC INTB (also I82559 Ethernet controller) */ - 1, /* PMC INTC */ - 1, /* PMC INTD */ - 0, /* DUART interrupt (active high) */ -}; - -static int -powerpmc250_show_cpuinfo(struct seq_file *m) -{ - seq_printf(m,"machine\t\t: Force PowerPMC250\n"); - - return 0; -} - -static void __init -powerpmc250_setup_arch(void) -{ - /* init to some ~sane value until calibrate_delay() runs */ - loops_per_jiffy = 50000000/HZ; - - /* Lookup PCI host bridges */ - powerpmc250_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 - - printk("Force PowerPMC250 port (C) 2001 MontaVista Software, Inc. (source@mvista.com)\n"); -} - -#if 0 -/* - * Compute the PrPMC750's bus speed using the baud clock as a - * reference. - */ -unsigned long __init powerpmc250_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; -} -#endif - -static void __init -powerpmc250_calibrate_decr(void) -{ - unsigned long freq; - int divisor = 4; - - //freq = powerpmc250_get_bus_speed(); -#warning hardcoded bus freq - freq = 100000000; - - tb_ticks_per_jiffy = freq / (HZ * divisor); - tb_to_us = mulhwu_scale_factor(freq/divisor, 1000000); -} - -static void -powerpmc250_restart(char *cmd) -{ - local_irq_disable(); - /* Hard reset */ - writeb(0x11, 0xfe000332); - while(1); -} - -static void -powerpmc250_halt(void) -{ - local_irq_disable(); - while (1); -} - -static void -powerpmc250_power_off(void) -{ - powerpmc250_halt(); -} - -static void __init -powerpmc250_init_IRQ(void) -{ - - OpenPIC_InitSenses = powerpmc250_openpic_initsenses; - OpenPIC_NumInitSenses = sizeof(powerpmc250_openpic_initsenses); - mpc10x_set_openpic(); -} - -/* - * Set BAT 3 to map 0xf0000000 to end of physical memory space. - */ -static __inline__ void -powerpmc250_set_bat(void) -{ - unsigned long bat3u, bat3l; - static int mapping_set = 0; - - if (!mapping_set) - { - __asm__ __volatile__( - " lis %0,0xf000\n \ - ori %1,%0,0x002a\n \ - ori %0,%0,0x1ffe\n \ - mtspr 0x21e,%0\n \ - mtspr 0x21f,%1\n \ - isync\n \ - sync " - : "=r" (bat3u), "=r" (bat3l)); - - mapping_set = 1; - } - return; -} - -static unsigned long __init -powerpmc250_find_end_of_memory(void) -{ - /* Cover I/O space with a BAT */ - /* yuck, better hope your ram size is a power of 2 -- paulus */ - powerpmc250_set_bat(); - - return mpc10x_get_mem_size(MPC10X_MEM_MAP_B); -} - -static void __init -powerpmc250_map_io(void) -{ - io_block_mapping(0xfe000000, 0xfe000000, 0x02000000, _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()); - -#ifdef CONFIG_BLK_DEV_INITRD - if ( r4 ) - { - initrd_start = r4 + KERNELBASE; - initrd_end = r5 + KERNELBASE; - } -#endif - - /* Copy cmd_line parameters */ - if ( r6) - { - *(char *)(r7 + KERNELBASE) = 0; - strcpy(cmd_line, (char *)(r6 + KERNELBASE)); - } - - isa_io_base = MPC10X_MAPB_ISA_IO_BASE; - isa_mem_base = MPC10X_MAPB_ISA_MEM_BASE; - pci_dram_offset = MPC10X_MAPB_DRAM_OFFSET; - - ppc_md.setup_arch = powerpmc250_setup_arch; - ppc_md.show_cpuinfo = powerpmc250_show_cpuinfo; - ppc_md.init_IRQ = powerpmc250_init_IRQ; - ppc_md.get_irq = openpic_get_irq; - - ppc_md.find_end_of_memory = powerpmc250_find_end_of_memory; - ppc_md.setup_io_mappings = powerpmc250_map_io; - - ppc_md.restart = powerpmc250_restart; - ppc_md.power_off = powerpmc250_power_off; - ppc_md.halt = powerpmc250_halt; - - /* PowerPMC250 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 = powerpmc250_calibrate_decr; -} - - -/* - * (This used to be arch/ppc/platforms/powerpmc250_pci.c) - * - * PCI support for Force PowerPMC250 - * - */ - -#undef DEBUG -#ifdef DEBUG -#define DBG(x...) printk(x) -#else -#define DBG(x...) -#endif /* DEBUG */ - -static inline int __init -powerpmc250_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 - */ - { - {17, 0, 0, 0}, /* Device 11 - 82559 */ - {0, 0, 0, 0}, /* 12 */ - {0, 0, 0, 0}, /* 13 */ - {0, 0, 0, 0}, /* 14 */ - {0, 0, 0, 0}, /* 15 */ - {16, 17, 18, 19}, /* Device 16 - PMC A1?? */ - }; - const long min_idsel = 11, max_idsel = 16, irqs_per_slot = 4; - return PCI_IRQ_TABLE_LOOKUP; -}; - -static int -powerpmc250_exclude_device(u_char bus, u_char devfn) -{ - /* - * While doing PCI Scan the MPC107 will 'detect' itself as - * device on the PCI Bus, will create an incorrect response and - * later will respond incorrectly to Configuration read coming - * from another device. - * - * The work around is that when doing a PCI Scan one - * should skip its own device number in the scan. - * - * The top IDsel is AD13 and the middle is AD14. - * - * -- Note from force - */ - - if ((bus == 0) && (PCI_SLOT(devfn) == 13 || PCI_SLOT(devfn) == 14)) { - return PCIBIOS_DEVICE_NOT_FOUND; - } - else { - return PCIBIOS_SUCCESSFUL; - } -} - -void __init -powerpmc250_find_bridges(void) -{ - struct pci_controller* hose; - - hose = pcibios_alloc_controller(); - if (!hose){ - printk("Can't allocate PCI 'hose' structure!!!\n"); - 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) { - - hose->mem_resources[0].end = 0xffffffff; - - hose->last_busno = pciauto_bus_scan(hose, hose->first_busno); - - /* ppc_md.pcibios_fixup = pcore_pcibios_fixup; */ - ppc_md.pci_swizzle = common_swizzle; - - ppc_md.pci_exclude_device = powerpmc250_exclude_device; - ppc_md.pci_map_irq = powerpmc250_map_irq; - } else { - if (ppc_md.progress) - ppc_md.progress("Bridge init failed", 0x100); - printk("Host bridge init failed\n"); - } - -} |