2 * arch/ppc/platform/85xx/mpc85xx_cds_common.c
4 * MPC85xx CDS board specific routines
6 * Maintainer: Kumar Gala <kumar.gala@freescale.com>
8 * Copyright 2004 Freescale Semiconductor, Inc
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
16 #include <linux/config.h>
17 #include <linux/stddef.h>
18 #include <linux/kernel.h>
19 #include <linux/init.h>
20 #include <linux/errno.h>
21 #include <linux/reboot.h>
22 #include <linux/pci.h>
23 #include <linux/kdev_t.h>
24 #include <linux/major.h>
25 #include <linux/console.h>
26 #include <linux/delay.h>
27 #include <linux/seq_file.h>
28 #include <linux/serial.h>
29 #include <linux/module.h>
30 #include <linux/root_dev.h>
31 #include <linux/initrd.h>
32 #include <linux/tty.h>
33 #include <linux/serial_core.h>
34 #include <linux/fsl_devices.h>
36 #include <asm/system.h>
37 #include <asm/pgtable.h>
39 #include <asm/atomic.h>
43 #include <asm/machdep.h>
44 #include <asm/open_pic.h>
45 #include <asm/i8259.h>
46 #include <asm/bootinfo.h>
47 #include <asm/pci-bridge.h>
48 #include <asm/mpc85xx.h>
50 #include <asm/immap_85xx.h>
52 #include <asm/ppc_sys.h>
55 #include <mm/mmu_decl.h>
56 #include <syslib/cpm2_pic.h>
57 #include <syslib/ppc85xx_common.h>
58 #include <syslib/ppc85xx_setup.h>
62 unsigned long isa_io_base = 0;
63 unsigned long isa_mem_base = 0;
66 extern unsigned long total_memory; /* in mm/init */
68 unsigned char __res[sizeof (bd_t)];
70 static int cds_pci_slot = 2;
71 static volatile u8 * cadmus;
73 /* Internal interrupts are all Level Sensitive, and Positive Polarity */
74 static u_char mpc85xx_cds_openpic_initsenses[] __initdata = {
75 MPC85XX_INTERNAL_IRQ_SENSES,
76 #if defined(CONFIG_PCI)
77 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 0: PCI1 slot */
78 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 1: PCI1 slot */
79 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 2: PCI1 slot */
80 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 3: PCI1 slot */
82 0x0, /* External 0: */
83 0x0, /* External 1: */
84 0x0, /* External 2: */
85 0x0, /* External 3: */
87 0x0, /* External 4: */
88 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 5: PHY */
89 0x0, /* External 6: */
90 0x0, /* External 7: */
91 0x0, /* External 8: */
92 0x0, /* External 9: */
93 0x0, /* External 10: */
94 #if defined(CONFIG_85xx_PCI2) && defined(CONFIG_PCI)
95 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 11: PCI2 slot 0 */
97 0x0, /* External 11: */
101 /* ************************************************************************ */
103 mpc85xx_cds_show_cpuinfo(struct seq_file *m)
105 uint pvid, svid, phid1;
106 uint memsize = total_memory;
107 bd_t *binfo = (bd_t *) __res;
110 /* get the core frequency */
111 freq = binfo->bi_intfreq;
113 pvid = mfspr(SPRN_PVR);
114 svid = mfspr(SPRN_SVR);
116 seq_printf(m, "Vendor\t\t: Freescale Semiconductor\n");
117 seq_printf(m, "Machine\t\t: CDS - MPC%s (%x)\n", cur_ppc_sys_spec->ppc_sys_name, cadmus[CM_VER]);
118 seq_printf(m, "clock\t\t: %dMHz\n", freq / 1000000);
119 seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
120 seq_printf(m, "SVR\t\t: 0x%x\n", svid);
122 /* Display cpu Pll setting */
123 phid1 = mfspr(SPRN_HID1);
124 seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
126 /* Display the amount of memory */
127 seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
133 static void cpm2_cascade(int irq, void *dev_id, struct pt_regs *regs)
135 while((irq = cpm2_get_irq(regs)) >= 0)
139 static struct irqaction cpm2_irqaction = {
140 .handler = cpm2_cascade,
141 .flags = SA_INTERRUPT,
142 .mask = CPU_MASK_NONE,
143 .name = "cpm2_cascade",
145 #endif /* CONFIG_CPM2 */
148 mpc85xx_cds_init_IRQ(void)
150 bd_t *binfo = (bd_t *) __res;
153 /* Determine the Physical Address of the OpenPIC regs */
154 phys_addr_t OpenPIC_PAddr = binfo->bi_immr_base + MPC85xx_OPENPIC_OFFSET;
155 OpenPIC_Addr = ioremap(OpenPIC_PAddr, MPC85xx_OPENPIC_SIZE);
156 OpenPIC_InitSenses = mpc85xx_cds_openpic_initsenses;
157 OpenPIC_NumInitSenses = sizeof (mpc85xx_cds_openpic_initsenses);
159 /* Skip reserved space and internal sources */
160 #ifdef CONFIG_MPC8548
161 openpic_set_sources(0, 48, OpenPIC_Addr + 0x10200);
163 openpic_set_sources(0, 32, OpenPIC_Addr + 0x10200);
165 /* Map PIC IRQs 0-11 */
166 openpic_set_sources(48, 12, OpenPIC_Addr + 0x10000);
168 /* we let openpic interrupts starting from an offset, to
169 * leave space for cascading interrupts underneath.
171 openpic_init(MPC85xx_OPENPIC_IRQ_OFFSET);
174 openpic_hookup_cascade(PIRQ0A, "82c59 cascade", i8259_irq);
176 for (i = 0; i < NUM_8259_INTERRUPTS; i++)
177 irq_desc[i].handler = &i8259_pic;
186 setup_irq(MPC85xx_IRQ_CPM, &cpm2_irqaction);
197 mpc85xx_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
199 struct pci_controller *hose = pci_bus_to_hose(dev->bus->number);
203 /* Handle PCI1 interrupts */
204 char pci_irq_table[][4] =
206 * PCI IDSEL/INTPIN->INTLINE
210 /* Note IRQ assignment for slots is based on which slot the elysium is
211 * in -- in this setup elysium is in slot #2 (this PIRQA as first
212 * interrupt on slot */
214 { 0, 1, 2, 3 }, /* 16 - PMC */
215 { 0, 1, 2, 3 }, /* 17 P2P (Tsi320) */
216 { 0, 1, 2, 3 }, /* 18 - Slot 1 */
217 { 1, 2, 3, 0 }, /* 19 - Slot 2 */
218 { 2, 3, 0, 1 }, /* 20 - Slot 3 */
219 { 3, 0, 1, 2 }, /* 21 - Slot 4 */
222 const long min_idsel = 16, max_idsel = 21, irqs_per_slot = 4;
225 for (i = 0; i < 6; i++)
226 for (j = 0; j < 4; j++)
227 pci_irq_table[i][j] =
228 ((pci_irq_table[i][j] + 5 -
229 cds_pci_slot) & 0x3) + PIRQ0A;
231 return PCI_IRQ_TABLE_LOOKUP;
233 /* Handle PCI2 interrupts (if we have one) */
234 char pci_irq_table[][4] =
237 * We only have one slot and one interrupt
238 * going to PIRQA - PIRQD */
239 { PIRQ1A, PIRQ1A, PIRQ1A, PIRQ1A }, /* 21 - slot 0 */
242 const long min_idsel = 21, max_idsel = 21, irqs_per_slot = 4;
244 return PCI_IRQ_TABLE_LOOKUP;
248 #define ARCADIA_HOST_BRIDGE_IDSEL 17
249 #define ARCADIA_2ND_BRIDGE_IDSEL 3
251 extern int mpc85xx_pci1_last_busno;
254 mpc85xx_exclude_device(u_char bus, u_char devfn)
256 if (bus == 0 && PCI_SLOT(devfn) == 0)
257 return PCIBIOS_DEVICE_NOT_FOUND;
258 #ifdef CONFIG_85xx_PCI2
259 if (mpc85xx_pci1_last_busno)
260 if (bus == (mpc85xx_pci1_last_busno + 1) && PCI_SLOT(devfn) == 0)
261 return PCIBIOS_DEVICE_NOT_FOUND;
263 /* We explicitly do not go past the Tundra 320 Bridge */
264 if ((bus == 1) && (PCI_SLOT(devfn) == ARCADIA_2ND_BRIDGE_IDSEL))
265 return PCIBIOS_DEVICE_NOT_FOUND;
266 if ((bus == 0) && (PCI_SLOT(devfn) == ARCADIA_2ND_BRIDGE_IDSEL))
267 return PCIBIOS_DEVICE_NOT_FOUND;
269 return PCIBIOS_SUCCESSFUL;
273 mpc85xx_cds_enable_via(struct pci_controller *hose)
278 early_read_config_dword(hose, 0, 0x88, PCI_CLASS_REVISION, &pci_class);
279 if ((pci_class >> 16) != PCI_CLASS_BRIDGE_PCI)
282 /* Configure P2P so that we can reach bus 1 */
283 early_write_config_byte(hose, 0, 0x88, PCI_PRIMARY_BUS, 0);
284 early_write_config_byte(hose, 0, 0x88, PCI_SECONDARY_BUS, 1);
285 early_write_config_byte(hose, 0, 0x88, PCI_SUBORDINATE_BUS, 0xff);
287 early_read_config_word(hose, 1, 0x10, PCI_VENDOR_ID, &vid);
288 early_read_config_word(hose, 1, 0x10, PCI_DEVICE_ID, &did);
290 if ((vid != PCI_VENDOR_ID_VIA) ||
291 (did != PCI_DEVICE_ID_VIA_82C686))
294 /* Enable USB and IDE functions */
295 early_write_config_byte(hose, 1, 0x10, 0x48, 0x08);
299 mpc85xx_cds_fixup_via(struct pci_controller *hose)
304 early_read_config_dword(hose, 0, 0x88, PCI_CLASS_REVISION, &pci_class);
305 if ((pci_class >> 16) != PCI_CLASS_BRIDGE_PCI)
309 * Force the backplane P2P bridge to have a window
310 * open from 0x00000000-0x00001fff in PCI I/O space.
311 * This allows legacy I/O (i8259, etc) on the VIA
312 * southbridge to be accessed.
314 early_write_config_byte(hose, 0, 0x88, PCI_IO_BASE, 0x00);
315 early_write_config_word(hose, 0, 0x88, PCI_IO_BASE_UPPER16, 0x0000);
316 early_write_config_byte(hose, 0, 0x88, PCI_IO_LIMIT, 0x10);
317 early_write_config_word(hose, 0, 0x88, PCI_IO_LIMIT_UPPER16, 0x0000);
319 early_read_config_word(hose, 1, 0x10, PCI_VENDOR_ID, &vid);
320 early_read_config_word(hose, 1, 0x10, PCI_DEVICE_ID, &did);
321 if ((vid != PCI_VENDOR_ID_VIA) ||
322 (did != PCI_DEVICE_ID_VIA_82C686))
326 * Since the P2P window was forced to cover the fixed
327 * legacy I/O addresses, it is necessary to manually
328 * place the base addresses for the IDE and USB functions
329 * within this window.
331 /* Function 1, IDE */
332 early_write_config_dword(hose, 1, 0x11, PCI_BASE_ADDRESS_0, 0x1ff8);
333 early_write_config_dword(hose, 1, 0x11, PCI_BASE_ADDRESS_1, 0x1ff4);
334 early_write_config_dword(hose, 1, 0x11, PCI_BASE_ADDRESS_2, 0x1fe8);
335 early_write_config_dword(hose, 1, 0x11, PCI_BASE_ADDRESS_3, 0x1fe4);
336 early_write_config_dword(hose, 1, 0x11, PCI_BASE_ADDRESS_4, 0x1fd0);
338 /* Function 2, USB ports 0-1 */
339 early_write_config_dword(hose, 1, 0x12, PCI_BASE_ADDRESS_4, 0x1fa0);
341 /* Function 3, USB ports 2-3 */
342 early_write_config_dword(hose, 1, 0x13, PCI_BASE_ADDRESS_4, 0x1f80);
344 /* Function 5, Power Management */
345 early_write_config_dword(hose, 1, 0x15, PCI_BASE_ADDRESS_0, 0x1e00);
346 early_write_config_dword(hose, 1, 0x15, PCI_BASE_ADDRESS_1, 0x1dfc);
347 early_write_config_dword(hose, 1, 0x15, PCI_BASE_ADDRESS_2, 0x1df8);
349 /* Function 6, AC97 Interface */
350 early_write_config_dword(hose, 1, 0x16, PCI_BASE_ADDRESS_0, 0x1c00);
354 mpc85xx_cds_pcibios_fixup(void)
356 struct pci_dev *dev = NULL;
359 if ((dev = pci_find_device(PCI_VENDOR_ID_VIA,
360 PCI_DEVICE_ID_VIA_82C586_1, NULL))) {
362 * U-Boot does not set the enable bits
363 * for the IDE device. Force them on here.
365 pci_read_config_byte(dev, 0x40, &c);
366 c |= 0x03; /* IDE: Chip Enable Bits */
367 pci_write_config_byte(dev, 0x40, c);
370 * Since only primary interface works, force the
371 * IDE function to standard primary IDE interrupt
375 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
379 * Force legacy USB interrupt routing
381 if ((dev = pci_find_device(PCI_VENDOR_ID_VIA,
382 PCI_DEVICE_ID_VIA_82C586_2, NULL))) {
384 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, 10);
387 if ((dev = pci_find_device(PCI_VENDOR_ID_VIA,
388 PCI_DEVICE_ID_VIA_82C586_2, dev))) {
390 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, 11);
393 #endif /* CONFIG_PCI */
397 /* ************************************************************************
399 * Setup the architecture
403 mpc85xx_cds_setup_arch(void)
405 bd_t *binfo = (bd_t *) __res;
407 struct gianfar_platform_data *pdata;
409 /* get the core frequency */
410 freq = binfo->bi_intfreq;
412 printk("mpc85xx_cds_setup_arch\n");
418 cadmus = ioremap(CADMUS_BASE, CADMUS_SIZE);
419 cds_pci_slot = ((cadmus[CM_CSR] >> 6) & 0x3) + 1;
420 printk("CDS Version = %x in PCI slot %d\n", cadmus[CM_VER], cds_pci_slot);
422 /* Setup TODC access */
423 TODC_INIT(TODC_TYPE_DS1743,
426 ioremap(CDS_RTC_ADDR, CDS_RTC_SIZE),
429 /* Set loops_per_jiffy to a half-way reasonable value,
430 for use until calibrate_delay gets called. */
431 loops_per_jiffy = freq / HZ;
434 /* VIA IDE configuration */
435 ppc_md.pcibios_fixup = mpc85xx_cds_pcibios_fixup;
437 /* setup PCI host bridges */
438 mpc85xx_setup_hose();
441 #ifdef CONFIG_SERIAL_8250
442 mpc85xx_early_serial_map();
445 #ifdef CONFIG_SERIAL_TEXT_DEBUG
446 /* Invalidate the entry we stole earlier the serial ports
447 * should be properly mapped */
448 invalidate_tlbcam_entry(num_tlbcam_entries - 1);
451 /* setup the board related information for the enet controllers */
452 pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC1);
454 pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR;
455 pdata->interruptPHY = MPC85xx_IRQ_EXT5;
457 /* fixup phy address */
458 pdata->phy_reg_addr += binfo->bi_immr_base;
459 memcpy(pdata->mac_addr, binfo->bi_enetaddr, 6);
462 pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC2);
464 pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR;
465 pdata->interruptPHY = MPC85xx_IRQ_EXT5;
467 /* fixup phy address */
468 pdata->phy_reg_addr += binfo->bi_immr_base;
469 memcpy(pdata->mac_addr, binfo->bi_enet1addr, 6);
472 pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_eTSEC1);
474 pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR;
475 pdata->interruptPHY = MPC85xx_IRQ_EXT5;
477 /* fixup phy address */
478 pdata->phy_reg_addr += binfo->bi_immr_base;
479 memcpy(pdata->mac_addr, binfo->bi_enetaddr, 6);
482 pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_eTSEC2);
484 pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR;
485 pdata->interruptPHY = MPC85xx_IRQ_EXT5;
487 /* fixup phy address */
488 pdata->phy_reg_addr += binfo->bi_immr_base;
489 memcpy(pdata->mac_addr, binfo->bi_enet1addr, 6);
492 ppc_sys_device_remove(MPC85xx_eTSEC3);
493 ppc_sys_device_remove(MPC85xx_eTSEC4);
495 #ifdef CONFIG_BLK_DEV_INITRD
497 ROOT_DEV = Root_RAM0;
500 #ifdef CONFIG_ROOT_NFS
503 ROOT_DEV = Root_HDA1;
507 /* ************************************************************************ */
509 platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
510 unsigned long r6, unsigned long r7)
512 /* parse_bootinfo must always be called first */
513 parse_bootinfo(find_bootinfo());
516 * If we were passed in a board information, copy it into the
517 * residual data area.
520 memcpy((void *) __res, (void *) (r3 + KERNELBASE),
524 #ifdef CONFIG_SERIAL_TEXT_DEBUG
526 bd_t *binfo = (bd_t *) __res;
529 /* Use the last TLB entry to map CCSRBAR to allow access to DUART regs */
530 settlbcam(num_tlbcam_entries - 1, binfo->bi_immr_base,
531 binfo->bi_immr_base, MPC85xx_CCSRBAR_SIZE, _PAGE_IO, 0);
533 memset(&p, 0, sizeof (p));
534 p.iotype = SERIAL_IO_MEM;
535 p.membase = (void *) binfo->bi_immr_base + MPC85xx_UART0_OFFSET;
536 p.uartclk = binfo->bi_busfreq;
540 memset(&p, 0, sizeof (p));
541 p.iotype = SERIAL_IO_MEM;
542 p.membase = (void *) binfo->bi_immr_base + MPC85xx_UART1_OFFSET;
543 p.uartclk = binfo->bi_busfreq;
549 #if defined(CONFIG_BLK_DEV_INITRD)
551 * If the init RAM disk has been configured in, and there's a valid
552 * starting address for it, set it up.
555 initrd_start = r4 + KERNELBASE;
556 initrd_end = r5 + KERNELBASE;
558 #endif /* CONFIG_BLK_DEV_INITRD */
560 /* Copy the kernel command line arguments to a safe place. */
563 *(char *) (r7 + KERNELBASE) = 0;
564 strcpy(cmd_line, (char *) (r6 + KERNELBASE));
567 identify_ppc_sys_by_id(mfspr(SPRN_SVR));
569 /* setup the PowerPC module struct */
570 ppc_md.setup_arch = mpc85xx_cds_setup_arch;
571 ppc_md.show_cpuinfo = mpc85xx_cds_show_cpuinfo;
573 ppc_md.init_IRQ = mpc85xx_cds_init_IRQ;
574 ppc_md.get_irq = openpic_get_irq;
576 ppc_md.restart = mpc85xx_restart;
577 ppc_md.power_off = mpc85xx_power_off;
578 ppc_md.halt = mpc85xx_halt;
580 ppc_md.find_end_of_memory = mpc85xx_find_end_of_memory;
582 ppc_md.calibrate_decr = mpc85xx_calibrate_decr;
584 ppc_md.time_init = todc_time_init;
585 ppc_md.set_rtc_time = todc_set_rtc_time;
586 ppc_md.get_rtc_time = todc_get_rtc_time;
588 ppc_md.nvram_read_val = todc_direct_read_val;
589 ppc_md.nvram_write_val = todc_direct_write_val;
591 #if defined(CONFIG_SERIAL_8250) && defined(CONFIG_SERIAL_TEXT_DEBUG)
592 ppc_md.progress = gen550_progress;
593 #endif /* CONFIG_SERIAL_8250 && CONFIG_SERIAL_TEXT_DEBUG */
594 #if defined(CONFIG_SERIAL_8250) && defined(CONFIG_KGDB)
595 ppc_md.early_serial_map = mpc85xx_early_serial_map;
596 #endif /* CONFIG_SERIAL_8250 && CONFIG_KGDB */
599 ppc_md.progress("mpc85xx_cds_init(): exit", 0);