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Diffstat (limited to 'arch/ppc/platforms/gemini_setup.c')
-rw-r--r--arch/ppc/platforms/gemini_setup.c577
1 files changed, 0 insertions, 577 deletions
diff --git a/arch/ppc/platforms/gemini_setup.c b/arch/ppc/platforms/gemini_setup.c
deleted file mode 100644
index f48048f362a..00000000000
--- a/arch/ppc/platforms/gemini_setup.c
+++ /dev/null
@@ -1,577 +0,0 @@
-/*
- * Copyright (C) 1995 Linus Torvalds
- * Adapted from 'alpha' version by Gary Thomas
- * Modified by Cort Dougan (cort@cs.nmt.edu)
- * Synergy Microsystems board support by Dan Cox (dan@synergymicro.com)
- *
- */
-
-#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/time.h>
-#include <linux/kdev_t.h>
-#include <linux/types.h>
-#include <linux/major.h>
-#include <linux/initrd.h>
-#include <linux/console.h>
-#include <linux/seq_file.h>
-#include <linux/root_dev.h>
-#include <linux/bcd.h>
-
-#include <asm/system.h>
-#include <asm/pgtable.h>
-#include <asm/page.h>
-#include <asm/dma.h>
-#include <asm/io.h>
-#include <asm/m48t35.h>
-#include <platforms/gemini.h>
-#include <asm/time.h>
-#include <asm/open_pic.h>
-#include <asm/bootinfo.h>
-#include <asm/machdep.h>
-
-void gemini_find_bridges(void);
-static int gemini_get_clock_speed(void);
-extern void gemini_pcibios_fixup(void);
-
-static char *gemini_board_families[] = {
- "VGM", "VSS", "KGM", "VGR", "VCM", "VCS", "KCM", "VCR"
-};
-static int gemini_board_count = sizeof(gemini_board_families) /
- sizeof(gemini_board_families[0]);
-
-static unsigned int cpu_7xx[16] = {
- 0, 15, 14, 0, 0, 13, 5, 9, 6, 11, 8, 10, 16, 12, 7, 0
-};
-static unsigned int cpu_6xx[16] = {
- 0, 0, 14, 0, 0, 13, 5, 9, 6, 11, 8, 10, 0, 12, 7, 0
-};
-
-/*
- * prom_init is the Gemini version of prom.c:prom_init. We only need
- * the BSS clearing code, so I copied that out of prom.c. This is a
- * lot simpler than hacking prom.c so it will build with Gemini. -VAL
- */
-
-#define PTRRELOC(x) ((typeof(x))((unsigned long)(x) + offset))
-
-unsigned long
-prom_init(void)
-{
- unsigned long offset = reloc_offset();
- unsigned long phys;
- extern char __bss_start, _end;
-
- /* First zero the BSS -- use memset, some arches don't have
- * caches on yet */
- memset_io(PTRRELOC(&__bss_start),0 , &_end - &__bss_start);
-
- /* Default */
- phys = offset + KERNELBASE;
-
- gemini_prom_init();
-
- return phys;
-}
-
-int
-gemini_show_cpuinfo(struct seq_file *m)
-{
- unsigned char reg, rev;
- char *family;
- unsigned int type;
-
- reg = readb(GEMINI_FEAT);
- family = gemini_board_families[((reg>>4) & 0xf)];
- if (((reg>>4) & 0xf) > gemini_board_count)
- printk(KERN_ERR "cpuinfo(): unable to determine board family\n");
-
- reg = readb(GEMINI_BREV);
- type = (reg>>4) & 0xf;
- rev = reg & 0xf;
-
- reg = readb(GEMINI_BECO);
-
- seq_printf(m, "machine\t\t: Gemini %s%d, rev %c, eco %d\n",
- family, type, (rev + 'A'), (reg & 0xf));
-
- seq_printf(m, "board\t\t: Gemini %s", family);
- if (type > 9)
- seq_printf(m, "%c", (type - 10) + 'A');
- else
- seq_printf(m, "%d", type);
-
- seq_printf(m, ", rev %c, eco %d\n", (rev + 'A'), (reg & 0xf));
-
- seq_printf(m, "clock\t\t: %dMhz\n", gemini_get_clock_speed());
-
- return 0;
-}
-
-static u_char gemini_openpic_initsenses[] = {
- 1,
- 1,
- 1,
- 1,
- 0,
- 0,
- 1, /* remainder are level-triggered */
-};
-
-#define GEMINI_MPIC_ADDR (0xfcfc0000)
-#define GEMINI_MPIC_PCI_CFG (0x80005800)
-
-void __init gemini_openpic_init(void)
-{
-
- OpenPIC_Addr = (volatile struct OpenPIC *)
- grackle_read(GEMINI_MPIC_PCI_CFG + 0x10);
- OpenPIC_InitSenses = gemini_openpic_initsenses;
- OpenPIC_NumInitSenses = sizeof( gemini_openpic_initsenses );
-
- ioremap( GEMINI_MPIC_ADDR, OPENPIC_SIZE);
-}
-
-
-extern unsigned long loops_per_jiffy;
-extern int root_mountflags;
-extern char cmd_line[];
-
-void
-gemini_heartbeat(void)
-{
- static unsigned long led = GEMINI_LEDBASE+(4*8);
- static char direction = 8;
-
-
- /* We only want to do this on 1 CPU */
- if (smp_processor_id())
- return;
- *(char *)led = 0;
- if ( (led + direction) > (GEMINI_LEDBASE+(7*8)) ||
- (led + direction) < (GEMINI_LEDBASE+(4*8)) )
- direction *= -1;
- led += direction;
- *(char *)led = 0xff;
- ppc_md.heartbeat_count = ppc_md.heartbeat_reset;
-}
-
-void __init gemini_setup_arch(void)
-{
- extern char cmd_line[];
-
-
- loops_per_jiffy = 50000000/HZ;
-
-#ifdef CONFIG_BLK_DEV_INITRD
- /* bootable off CDROM */
- if (initrd_start)
- ROOT_DEV = Root_SR0;
- else
-#endif
- ROOT_DEV = Root_SDA1;
-
- /* nothing but serial consoles... */
- sprintf(cmd_line, "%s console=ttyS0", cmd_line);
-
- printk("Boot arguments: %s\n", cmd_line);
-
- ppc_md.heartbeat = gemini_heartbeat;
- ppc_md.heartbeat_reset = HZ/8;
- ppc_md.heartbeat_count = 1;
-
- /* Lookup PCI hosts */
- gemini_find_bridges();
- /* take special pains to map the MPIC, since it isn't mapped yet */
- gemini_openpic_init();
- /* start the L2 */
- gemini_init_l2();
-}
-
-
-int
-gemini_get_clock_speed(void)
-{
- unsigned long hid1, pvr;
- int clock;
-
- pvr = mfspr(SPRN_PVR);
- hid1 = (mfspr(SPRN_HID1) >> 28) & 0xf;
- if (PVR_VER(pvr) == 8 ||
- PVR_VER(pvr) == 12)
- hid1 = cpu_7xx[hid1];
- else
- hid1 = cpu_6xx[hid1];
-
- switch((readb(GEMINI_BSTAT) & 0xc) >> 2) {
-
- case 0:
- default:
- clock = (hid1*100)/3;
- break;
-
- case 1:
- clock = (hid1*125)/3;
- break;
-
- case 2:
- clock = (hid1*50);
- break;
- }
-
- return clock;
-}
-
-void __init gemini_init_l2(void)
-{
- unsigned char reg, brev, fam, creg;
- unsigned long cache;
- unsigned long pvr;
-
- reg = readb(GEMINI_L2CFG);
- brev = readb(GEMINI_BREV);
- fam = readb(GEMINI_FEAT);
- pvr = mfspr(SPRN_PVR);
-
- switch(PVR_VER(pvr)) {
-
- case 8:
- if (reg & 0xc0)
- cache = (((reg >> 6) & 0x3) << 28);
- else
- cache = 0x3 << 28;
-
-#ifdef CONFIG_SMP
- /* Pre-3.0 processor revs had snooping errata. Leave
- their L2's disabled with SMP. -- Dan */
- if (PVR_CFG(pvr) < 3) {
- printk("Pre-3.0 750; L2 left disabled!\n");
- return;
- }
-#endif /* CONFIG_SMP */
-
- /* Special case: VGM5-B's came before L2 ratios were set on
- the board. Processor speed shouldn't be too high, so
- set L2 ratio to 1:1.5. */
- if ((brev == 0x51) && ((fam & 0xa0) >> 4) == 0)
- reg |= 1;
-
- /* determine best cache ratio based upon what the board
- tells us (which sometimes _may_ not be true) and
- the processor speed. */
- else {
- if (gemini_get_clock_speed() > 250)
- reg = 2;
- }
- break;
- case 12:
- {
- static unsigned long l2_size_val = 0;
-
- if (!l2_size_val)
- l2_size_val = _get_L2CR();
- cache = l2_size_val;
- break;
- }
- case 4:
- case 9:
- creg = readb(GEMINI_CPUSTAT);
- if (((creg & 0xc) >> 2) != 1)
- printk("Dual-604 boards don't support the use of L2\n");
- else
- writeb(1, GEMINI_L2CFG);
- return;
- default:
- printk("Unknown processor; L2 left disabled\n");
- return;
- }
-
- cache |= ((1<<reg) << 25);
- cache |= (L2CR_L2RAM_MASK|L2CR_L2CTL|L2CR_L2DO);
- _set_L2CR(0);
- _set_L2CR(cache | L2CR_L2E);
-
-}
-
-void
-gemini_restart(char *cmd)
-{
- local_irq_disable();
- /* make a clean restart, not via the MPIC */
- _gemini_reboot();
- for(;;);
-}
-
-void
-gemini_power_off(void)
-{
- for(;;);
-}
-
-void
-gemini_halt(void)
-{
- gemini_restart(NULL);
-}
-
-void __init gemini_init_IRQ(void)
-{
- /* gemini has no 8259 */
- openpic_init(1, 0, 0, -1);
-}
-
-#define gemini_rtc_read(x) (readb(GEMINI_RTC+(x)))
-#define gemini_rtc_write(val,x) (writeb((val),(GEMINI_RTC+(x))))
-
-/* ensure that the RTC is up and running */
-long __init gemini_time_init(void)
-{
- unsigned char reg;
-
- reg = gemini_rtc_read(M48T35_RTC_CONTROL);
-
- if ( reg & M48T35_RTC_STOPPED ) {
- printk(KERN_INFO "M48T35 real-time-clock was stopped. Now starting...\n");
- gemini_rtc_write((reg & ~(M48T35_RTC_STOPPED)), M48T35_RTC_CONTROL);
- gemini_rtc_write((reg | M48T35_RTC_SET), M48T35_RTC_CONTROL);
- }
- return 0;
-}
-
-#undef DEBUG_RTC
-
-unsigned long
-gemini_get_rtc_time(void)
-{
- unsigned int year, mon, day, hour, min, sec;
- unsigned char reg;
-
- reg = gemini_rtc_read(M48T35_RTC_CONTROL);
- gemini_rtc_write((reg|M48T35_RTC_READ), M48T35_RTC_CONTROL);
-#ifdef DEBUG_RTC
- printk("get rtc: reg = %x\n", reg);
-#endif
-
- do {
- sec = gemini_rtc_read(M48T35_RTC_SECONDS);
- min = gemini_rtc_read(M48T35_RTC_MINUTES);
- hour = gemini_rtc_read(M48T35_RTC_HOURS);
- day = gemini_rtc_read(M48T35_RTC_DOM);
- mon = gemini_rtc_read(M48T35_RTC_MONTH);
- year = gemini_rtc_read(M48T35_RTC_YEAR);
- } while( sec != gemini_rtc_read(M48T35_RTC_SECONDS));
-#ifdef DEBUG_RTC
- printk("get rtc: sec=%x, min=%x, hour=%x, day=%x, mon=%x, year=%x\n",
- sec, min, hour, day, mon, year);
-#endif
-
- gemini_rtc_write(reg, M48T35_RTC_CONTROL);
-
- BCD_TO_BIN(sec);
- BCD_TO_BIN(min);
- BCD_TO_BIN(hour);
- BCD_TO_BIN(day);
- BCD_TO_BIN(mon);
- BCD_TO_BIN(year);
-
- if ((year += 1900) < 1970)
- year += 100;
-#ifdef DEBUG_RTC
- printk("get rtc: sec=%x, min=%x, hour=%x, day=%x, mon=%x, year=%x\n",
- sec, min, hour, day, mon, year);
-#endif
-
- return mktime( year, mon, day, hour, min, sec );
-}
-
-
-int
-gemini_set_rtc_time( unsigned long now )
-{
- unsigned char reg;
- struct rtc_time tm;
-
- to_tm( now, &tm );
-
- reg = gemini_rtc_read(M48T35_RTC_CONTROL);
-#ifdef DEBUG_RTC
- printk("set rtc: reg = %x\n", reg);
-#endif
-
- gemini_rtc_write((reg|M48T35_RTC_SET), M48T35_RTC_CONTROL);
-#ifdef DEBUG_RTC
- printk("set rtc: tm vals - sec=%x, min=%x, hour=%x, mon=%x, mday=%x, year=%x\n",
- tm.tm_sec, tm.tm_min, tm.tm_hour, tm.tm_mon, tm.tm_mday, tm.tm_year);
-#endif
-
- tm.tm_year -= 1900;
- BIN_TO_BCD(tm.tm_sec);
- BIN_TO_BCD(tm.tm_min);
- BIN_TO_BCD(tm.tm_hour);
- BIN_TO_BCD(tm.tm_mon);
- BIN_TO_BCD(tm.tm_mday);
- BIN_TO_BCD(tm.tm_year);
-#ifdef DEBUG_RTC
- printk("set rtc: tm vals - sec=%x, min=%x, hour=%x, mon=%x, mday=%x, year=%x\n",
- tm.tm_sec, tm.tm_min, tm.tm_hour, tm.tm_mon, tm.tm_mday, tm.tm_year);
-#endif
-
- gemini_rtc_write(tm.tm_sec, M48T35_RTC_SECONDS);
- gemini_rtc_write(tm.tm_min, M48T35_RTC_MINUTES);
- gemini_rtc_write(tm.tm_hour, M48T35_RTC_HOURS);
- gemini_rtc_write(tm.tm_mday, M48T35_RTC_DOM);
- gemini_rtc_write(tm.tm_mon, M48T35_RTC_MONTH);
- gemini_rtc_write(tm.tm_year, M48T35_RTC_YEAR);
-
- /* done writing */
- gemini_rtc_write(reg, M48T35_RTC_CONTROL);
-
- return 0;
-}
-
-/* use the RTC to determine the decrementer count */
-void __init gemini_calibrate_decr(void)
-{
- int freq, divisor;
- unsigned char reg;
-
- /* determine processor bus speed */
- reg = readb(GEMINI_BSTAT);
-
- switch(((reg & 0x0c)>>2)&0x3) {
- case 0:
- default:
- freq = 66667;
- break;
- case 1:
- freq = 83000;
- break;
- case 2:
- freq = 100000;
- break;
- }
-
- freq *= 1000;
- divisor = 4;
- tb_ticks_per_jiffy = freq / HZ / divisor;
- tb_to_us = mulhwu_scale_factor(freq/divisor, 1000000);
-}
-
-unsigned long __init gemini_find_end_of_memory(void)
-{
- unsigned long total;
- unsigned char reg;
-
- reg = readb(GEMINI_MEMCFG);
- total = ((1<<((reg & 0x7) - 1)) *
- (8<<((reg >> 3) & 0x7)));
- total *= (1024*1024);
- return total;
-}
-
-static void __init
-gemini_map_io(void)
-{
- io_block_mapping(0xf0000000, 0xf0000000, 0x10000000, _PAGE_IO);
- io_block_mapping(0x80000000, 0x80000000, 0x10000000, _PAGE_IO);
-}
-
-#ifdef CONFIG_SMP
-static int
-smp_gemini_probe(void)
-{
- int i, nr;
-
- nr = (readb(GEMINI_CPUSTAT) & GEMINI_CPU_COUNT_MASK) >> 2;
- if (nr == 0)
- nr = 4;
-
- if (nr > 1) {
- openpic_request_IPIs();
- for (i = 1; i < nr; ++i)
- smp_hw_index[i] = i;
- }
-
- return nr;
-}
-
-static void
-smp_gemini_kick_cpu(int nr)
-{
- openpic_reset_processor_phys(1 << nr);
- openpic_reset_processor_phys(0);
-}
-
-static void
-smp_gemini_setup_cpu(int cpu_nr)
-{
- if (OpenPIC_Addr)
- do_openpic_setup_cpu();
- if (cpu_nr > 0)
- gemini_init_l2();
-}
-
-static struct smp_ops_t gemini_smp_ops = {
- smp_openpic_message_pass,
- smp_gemini_probe,
- smp_gemini_kick_cpu,
- smp_gemini_setup_cpu,
- .give_timebase = smp_generic_give_timebase,
- .take_timebase = smp_generic_take_timebase,
-};
-#endif /* CONFIG_SMP */
-
-void __init platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
- unsigned long r6, unsigned long r7)
-{
- int i;
-
- /* Restore BATs for now */
- mtspr(SPRN_DBAT3U, 0xf0001fff);
- mtspr(SPRN_DBAT3L, 0xf000002a);
-
- parse_bootinfo(find_bootinfo());
-
- for(i = 0; i < GEMINI_LEDS; i++)
- gemini_led_off(i);
-
- ISA_DMA_THRESHOLD = 0;
- DMA_MODE_READ = 0;
- DMA_MODE_WRITE = 0;
-
-#ifdef CONFIG_BLK_DEV_INITRD
- if ( r4 )
- {
- initrd_start = r4 + KERNELBASE;
- initrd_end = r5 + KERNELBASE;
- }
-#endif
-
- ppc_md.setup_arch = gemini_setup_arch;
- ppc_md.show_cpuinfo = gemini_show_cpuinfo;
- ppc_md.init_IRQ = gemini_init_IRQ;
- ppc_md.get_irq = openpic_get_irq;
- ppc_md.init = NULL;
-
- ppc_md.restart = gemini_restart;
- ppc_md.power_off = gemini_power_off;
- ppc_md.halt = gemini_halt;
-
- ppc_md.time_init = gemini_time_init;
- ppc_md.set_rtc_time = gemini_set_rtc_time;
- ppc_md.get_rtc_time = gemini_get_rtc_time;
- ppc_md.calibrate_decr = gemini_calibrate_decr;
-
- ppc_md.find_end_of_memory = gemini_find_end_of_memory;
- ppc_md.setup_io_mappings = gemini_map_io;
-
- ppc_md.pcibios_fixup_bus = gemini_pcibios_fixup;
-
-#ifdef CONFIG_SMP
- smp_ops = &gemini_smp_ops;
-#endif /* CONFIG_SMP */
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-27 22:31:39 +0000