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Diffstat (limited to 'arch/ppc/syslib/m8xx_setup.c')
-rw-r--r--arch/ppc/syslib/m8xx_setup.c465
1 files changed, 0 insertions, 465 deletions
diff --git a/arch/ppc/syslib/m8xx_setup.c b/arch/ppc/syslib/m8xx_setup.c
deleted file mode 100644
index 18da720fc1b0..000000000000
--- a/arch/ppc/syslib/m8xx_setup.c
+++ /dev/null
@@ -1,465 +0,0 @@
-/*
- * Copyright (C) 1995 Linus Torvalds
- * Adapted from 'alpha' version by Gary Thomas
- * Modified by Cort Dougan (cort@cs.nmt.edu)
- * Modified for MBX using prep/chrp/pmac functions by Dan (dmalek@jlc.net)
- * Further modified for generic 8xx by Dan.
- */
-
-/*
- * bootup setup stuff..
- */
-
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/stddef.h>
-#include <linux/unistd.h>
-#include <linux/ptrace.h>
-#include <linux/slab.h>
-#include <linux/user.h>
-#include <linux/a.out.h>
-#include <linux/tty.h>
-#include <linux/major.h>
-#include <linux/interrupt.h>
-#include <linux/reboot.h>
-#include <linux/init.h>
-#include <linux/initrd.h>
-#include <linux/ioport.h>
-#include <linux/bootmem.h>
-#include <linux/seq_file.h>
-#include <linux/root_dev.h>
-
-#if defined(CONFIG_MTD) && defined(CONFIG_MTD_PHYSMAP)
-#include <linux/mtd/partitions.h>
-#include <linux/mtd/physmap.h>
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/map.h>
-#endif
-
-#include <asm/mmu.h>
-#include <asm/reg.h>
-#include <asm/residual.h>
-#include <asm/io.h>
-#include <asm/pgtable.h>
-#include <asm/mpc8xx.h>
-#include <asm/8xx_immap.h>
-#include <asm/machdep.h>
-#include <asm/bootinfo.h>
-#include <asm/time.h>
-#include <asm/xmon.h>
-#include <asm/ppc_sys.h>
-
-#include "ppc8xx_pic.h"
-
-#ifdef CONFIG_MTD_PHYSMAP
-#define MPC8xxADS_BANK_WIDTH 4
-#endif
-
-#define MPC8xxADS_U_BOOT_SIZE 0x80000
-#define MPC8xxADS_FREE_AREA_OFFSET MPC8xxADS_U_BOOT_SIZE
-
-#if defined(CONFIG_MTD_PARTITIONS)
- /*
- NOTE: bank width and interleave relative to the installed flash
- should have been chosen within MTD_CFI_GEOMETRY options.
- */
-static struct mtd_partition mpc8xxads_partitions[] = {
- {
- .name = "bootloader",
- .size = MPC8xxADS_U_BOOT_SIZE,
- .offset = 0,
- .mask_flags = MTD_WRITEABLE, /* force read-only */
- }, {
- .name = "User FS",
- .offset = MPC8xxADS_FREE_AREA_OFFSET
- }
-};
-
-#define mpc8xxads_part_num ARRAY_SIZE(mpc8xxads_partitions)
-
-#endif
-
-static int m8xx_set_rtc_time(unsigned long time);
-static unsigned long m8xx_get_rtc_time(void);
-void m8xx_calibrate_decr(void);
-
-unsigned char __res[sizeof(bd_t)];
-
-extern unsigned long find_available_memory(void);
-extern void m8xx_cpm_reset(void);
-extern void m8xx_wdt_handler_install(bd_t *bp);
-extern void rpxfb_alloc_pages(void);
-extern void cpm_interrupt_init(void);
-
-void __attribute__ ((weak))
-board_init(void)
-{
-}
-
-void __init
-m8xx_setup_arch(void)
-{
-#if defined(CONFIG_MTD) && defined(CONFIG_MTD_PHYSMAP)
- bd_t *binfo = (bd_t *)__res;
-#endif
-
- /* Reset the Communication Processor Module.
- */
- m8xx_cpm_reset();
-
-#ifdef CONFIG_FB_RPX
- rpxfb_alloc_pages();
-#endif
-
-#ifdef notdef
- ROOT_DEV = Root_HDA1; /* hda1 */
-#endif
-
-#ifdef CONFIG_BLK_DEV_INITRD
-#if 0
- ROOT_DEV = Root_FD0; /* floppy */
- rd_prompt = 1;
- rd_doload = 1;
- rd_image_start = 0;
-#endif
-#if 0 /* XXX this may need to be updated for the new bootmem stuff,
- or possibly just deleted (see set_phys_avail() in init.c).
- - paulus. */
- /* initrd_start and size are setup by boot/head.S and kernel/head.S */
- if ( initrd_start )
- {
- if (initrd_end > *memory_end_p)
- {
- printk("initrd extends beyond end of memory "
- "(0x%08lx > 0x%08lx)\ndisabling initrd\n",
- initrd_end,*memory_end_p);
- initrd_start = 0;
- }
- }
-#endif
-#endif
-
- board_init();
-}
-
-void
-abort(void)
-{
-#ifdef CONFIG_XMON
- xmon(0);
-#endif
- machine_restart(NULL);
-
- /* not reached */
- for (;;);
-}
-
-/* A place holder for time base interrupts, if they are ever enabled. */
-irqreturn_t timebase_interrupt(int irq, void * dev)
-{
- printk ("timebase_interrupt()\n");
-
- return IRQ_HANDLED;
-}
-
-static struct irqaction tbint_irqaction = {
- .handler = timebase_interrupt,
- .mask = CPU_MASK_NONE,
- .name = "tbint",
-};
-
-/* per-board overridable init_internal_rtc() function. */
-void __init __attribute__ ((weak))
-init_internal_rtc(void)
-{
- /* Disable the RTC one second and alarm interrupts. */
- clrbits16(&((immap_t *)IMAP_ADDR)->im_sit.sit_rtcsc, (RTCSC_SIE | RTCSC_ALE));
-
- /* Enable the RTC */
- setbits16(&((immap_t *)IMAP_ADDR)->im_sit.sit_rtcsc, (RTCSC_RTF | RTCSC_RTE));
-
-}
-
-/* The decrementer counts at the system (internal) clock frequency divided by
- * sixteen, or external oscillator divided by four. We force the processor
- * to use system clock divided by sixteen.
- */
-void __init m8xx_calibrate_decr(void)
-{
- bd_t *binfo = (bd_t *)__res;
- int freq, fp, divisor;
-
- /* Unlock the SCCR. */
- out_be32(&((immap_t *)IMAP_ADDR)->im_clkrstk.cark_sccrk, ~KAPWR_KEY);
- out_be32(&((immap_t *)IMAP_ADDR)->im_clkrstk.cark_sccrk, KAPWR_KEY);
-
- /* Force all 8xx processors to use divide by 16 processor clock. */
- setbits32(&((immap_t *)IMAP_ADDR)->im_clkrst.car_sccr, 0x02000000);
- /* Processor frequency is MHz.
- * The value 'fp' is the number of decrementer ticks per second.
- */
- fp = binfo->bi_intfreq / 16;
- freq = fp*60; /* try to make freq/1e6 an integer */
- divisor = 60;
- printk("Decrementer Frequency = %d/%d\n", freq, divisor);
- tb_ticks_per_jiffy = freq / HZ / divisor;
- tb_to_us = mulhwu_scale_factor(freq / divisor, 1000000);
-
- /* Perform some more timer/timebase initialization. This used
- * to be done elsewhere, but other changes caused it to get
- * called more than once....that is a bad thing.
- *
- * First, unlock all of the registers we are going to modify.
- * To protect them from corruption during power down, registers
- * that are maintained by keep alive power are "locked". To
- * modify these registers we have to write the key value to
- * the key location associated with the register.
- * Some boards power up with these unlocked, while others
- * are locked. Writing anything (including the unlock code?)
- * to the unlocked registers will lock them again. So, here
- * we guarantee the registers are locked, then we unlock them
- * for our use.
- */
- out_be32(&((immap_t *)IMAP_ADDR)->im_sitk.sitk_tbscrk, ~KAPWR_KEY);
- out_be32(&((immap_t *)IMAP_ADDR)->im_sitk.sitk_rtcsck, ~KAPWR_KEY);
- out_be32(&((immap_t *)IMAP_ADDR)->im_sitk.sitk_tbk, ~KAPWR_KEY);
- out_be32(&((immap_t *)IMAP_ADDR)->im_sitk.sitk_tbscrk, KAPWR_KEY);
- out_be32(&((immap_t *)IMAP_ADDR)->im_sitk.sitk_rtcsck, KAPWR_KEY);
- out_be32(&((immap_t *)IMAP_ADDR)->im_sitk.sitk_tbk, KAPWR_KEY);
-
- init_internal_rtc();
-
- /* Enabling the decrementer also enables the timebase interrupts
- * (or from the other point of view, to get decrementer interrupts
- * we have to enable the timebase). The decrementer interrupt
- * is wired into the vector table, nothing to do here for that.
- */
- out_be16(&((immap_t *)IMAP_ADDR)->im_sit.sit_tbscr, (mk_int_int_mask(DEC_INTERRUPT) << 8) | (TBSCR_TBF | TBSCR_TBE));
-
- if (setup_irq(DEC_INTERRUPT, &tbint_irqaction))
- panic("Could not allocate timer IRQ!");
-
-#ifdef CONFIG_8xx_WDT
- /* Install watchdog timer handler early because it might be
- * already enabled by the bootloader
- */
- m8xx_wdt_handler_install(binfo);
-#endif
-}
-
-/* The RTC on the MPC8xx is an internal register.
- * We want to protect this during power down, so we need to unlock,
- * modify, and re-lock.
- */
-static int
-m8xx_set_rtc_time(unsigned long time)
-{
- out_be32(&((immap_t *)IMAP_ADDR)->im_sitk.sitk_rtck, KAPWR_KEY);
- out_be32(&((immap_t *)IMAP_ADDR)->im_sit.sit_rtc, time);
- out_be32(&((immap_t *)IMAP_ADDR)->im_sitk.sitk_rtck, ~KAPWR_KEY);
- return(0);
-}
-
-static unsigned long
-m8xx_get_rtc_time(void)
-{
- /* Get time from the RTC. */
- return (unsigned long) in_be32(&((immap_t *)IMAP_ADDR)->im_sit.sit_rtc);
-}
-
-static void
-m8xx_restart(char *cmd)
-{
- __volatile__ unsigned char dummy;
-
- local_irq_disable();
-
- setbits32(&((immap_t *)IMAP_ADDR)->im_clkrst.car_plprcr, 0x00000080);
- /* Clear the ME bit in MSR to cause checkstop on machine check
- */
- mtmsr(mfmsr() & ~0x1000);
-
- dummy = in_8(&((immap_t *)IMAP_ADDR)->im_clkrst.res[0]);
- printk("Restart failed\n");
- while(1);
-}
-
-static void
-m8xx_power_off(void)
-{
- m8xx_restart(NULL);
-}
-
-static void
-m8xx_halt(void)
-{
- m8xx_restart(NULL);
-}
-
-
-static int
-m8xx_show_percpuinfo(struct seq_file *m, int i)
-{
- bd_t *bp;
-
- bp = (bd_t *)__res;
-
- seq_printf(m, "clock\t\t: %uMHz\n"
- "bus clock\t: %uMHz\n",
- bp->bi_intfreq / 1000000,
- bp->bi_busfreq / 1000000);
-
- return 0;
-}
-
-#ifdef CONFIG_PCI
-static struct irqaction mbx_i8259_irqaction = {
- .handler = mbx_i8259_action,
- .mask = CPU_MASK_NONE,
- .name = "i8259 cascade",
-};
-#endif
-
-/* Initialize the internal interrupt controller. The number of
- * interrupts supported can vary with the processor type, and the
- * 82xx family can have up to 64.
- * External interrupts can be either edge or level triggered, and
- * need to be initialized by the appropriate driver.
- */
-static void __init
-m8xx_init_IRQ(void)
-{
- int i;
-
- for (i = SIU_IRQ_OFFSET ; i < SIU_IRQ_OFFSET + NR_SIU_INTS ; i++)
- irq_desc[i].chip = &ppc8xx_pic;
-
- cpm_interrupt_init();
-
-#if defined(CONFIG_PCI)
- for (i = I8259_IRQ_OFFSET ; i < I8259_IRQ_OFFSET + NR_8259_INTS ; i++)
- irq_desc[i].chip = &i8259_pic;
-
- i8259_pic_irq_offset = I8259_IRQ_OFFSET;
- i8259_init(0);
-
- /* The i8259 cascade interrupt must be level sensitive. */
-
- clrbits32(&((immap_t *)IMAP_ADDR)->im_siu_conf.sc_siel, (0x80000000 >> ISA_BRIDGE_INT));
- if (setup_irq(ISA_BRIDGE_INT, &mbx_i8259_irqaction))
- enable_irq(ISA_BRIDGE_INT);
-#endif /* CONFIG_PCI */
-}
-
-/* -------------------------------------------------------------------- */
-
-/*
- * This is a big hack right now, but it may turn into something real
- * someday.
- *
- * For the 8xx boards (at this time anyway), there is nothing to initialize
- * associated the PROM. Rather than include all of the prom.c
- * functions in the image just to get prom_init, all we really need right
- * now is the initialization of the physical memory region.
- */
-static unsigned long __init
-m8xx_find_end_of_memory(void)
-{
- bd_t *binfo;
- extern unsigned char __res[];
-
- binfo = (bd_t *)__res;
-
- return binfo->bi_memsize;
-}
-
-/*
- * Now map in some of the I/O space that is generically needed
- * or shared with multiple devices.
- * All of this fits into the same 4Mbyte region, so it only
- * requires one page table page. (or at least it used to -- paulus)
- */
-static void __init
-m8xx_map_io(void)
-{
- io_block_mapping(IMAP_ADDR, IMAP_ADDR, IMAP_SIZE, _PAGE_IO);
-#ifdef CONFIG_MBX
- io_block_mapping(NVRAM_ADDR, NVRAM_ADDR, NVRAM_SIZE, _PAGE_IO);
- io_block_mapping(MBX_CSR_ADDR, MBX_CSR_ADDR, MBX_CSR_SIZE, _PAGE_IO);
- io_block_mapping(PCI_CSR_ADDR, PCI_CSR_ADDR, PCI_CSR_SIZE, _PAGE_IO);
-
- /* Map some of the PCI/ISA I/O space to get the IDE interface.
- */
- io_block_mapping(PCI_ISA_IO_ADDR, PCI_ISA_IO_ADDR, 0x4000, _PAGE_IO);
- io_block_mapping(PCI_IDE_ADDR, PCI_IDE_ADDR, 0x4000, _PAGE_IO);
-#endif
-#if defined(CONFIG_RPXLITE) || defined(CONFIG_RPXCLASSIC)
- io_block_mapping(RPX_CSR_ADDR, RPX_CSR_ADDR, RPX_CSR_SIZE, _PAGE_IO);
-#if !defined(CONFIG_PCI)
- io_block_mapping(_IO_BASE,_IO_BASE,_IO_BASE_SIZE, _PAGE_IO);
-#endif
-#endif
-#if defined(CONFIG_RPXTOUCH) || defined(CONFIG_FB_RPX)
- io_block_mapping(HIOX_CSR_ADDR, HIOX_CSR_ADDR, HIOX_CSR_SIZE, _PAGE_IO);
-#endif
-#ifdef CONFIG_FADS
- io_block_mapping(BCSR_ADDR, BCSR_ADDR, BCSR_SIZE, _PAGE_IO);
-#endif
-#ifdef CONFIG_PCI
- io_block_mapping(PCI_CSR_ADDR, PCI_CSR_ADDR, PCI_CSR_SIZE, _PAGE_IO);
-#endif
-#if defined(CONFIG_NETTA)
- io_block_mapping(_IO_BASE,_IO_BASE,_IO_BASE_SIZE, _PAGE_IO);
-#endif
-}
-
-void __init
-platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
- unsigned long r6, unsigned long r7)
-{
- parse_bootinfo(find_bootinfo());
-
- if ( r3 )
- memcpy( (void *)__res,(void *)(r3+KERNELBASE), sizeof(bd_t) );
-
-#ifdef CONFIG_PCI
- m8xx_setup_pci_ptrs();
-#endif
-
-#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 */
- /* take care of cmd line */
- if ( r6 )
- {
- *(char *)(r7+KERNELBASE) = 0;
- strcpy(cmd_line, (char *)(r6+KERNELBASE));
- }
-
- identify_ppc_sys_by_name(BOARD_CHIP_NAME);
-
- ppc_md.setup_arch = m8xx_setup_arch;
- ppc_md.show_percpuinfo = m8xx_show_percpuinfo;
- ppc_md.init_IRQ = m8xx_init_IRQ;
- ppc_md.get_irq = m8xx_get_irq;
- ppc_md.init = NULL;
-
- ppc_md.restart = m8xx_restart;
- ppc_md.power_off = m8xx_power_off;
- ppc_md.halt = m8xx_halt;
-
- ppc_md.time_init = NULL;
- ppc_md.set_rtc_time = m8xx_set_rtc_time;
- ppc_md.get_rtc_time = m8xx_get_rtc_time;
- ppc_md.calibrate_decr = m8xx_calibrate_decr;
-
- ppc_md.find_end_of_memory = m8xx_find_end_of_memory;
- ppc_md.setup_io_mappings = m8xx_map_io;
-}