aboutsummaryrefslogtreecommitdiff
path: root/arch/ppc/platforms/powerpmc250.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/ppc/platforms/powerpmc250.c')
-rw-r--r--arch/ppc/platforms/powerpmc250.c378
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");
- }
-
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 00:18:27 +0000