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/irq.h>
28 #include <linux/seq_file.h>
29 #include <linux/serial.h>
30 #include <linux/module.h>
31 #include <linux/root_dev.h>
32 #include <linux/initrd.h>
33 #include <linux/tty.h>
34 #include <linux/serial_core.h>
35 #include <linux/fsl_devices.h>
37 #include <asm/system.h>
38 #include <asm/pgtable.h>
40 #include <asm/atomic.h>
44 #include <asm/machdep.h>
45 #include <asm/open_pic.h>
46 #include <asm/i8259.h>
47 #include <asm/bootinfo.h>
48 #include <asm/pci-bridge.h>
49 #include <asm/mpc85xx.h>
51 #include <asm/immap_85xx.h>
53 #include <asm/ppc_sys.h>
56 #include <mm/mmu_decl.h>
57 #include <syslib/cpm2_pic.h>
58 #include <syslib/ppc85xx_common.h>
59 #include <syslib/ppc85xx_setup.h>
63 unsigned long isa_io_base = 0;
64 unsigned long isa_mem_base = 0;
67 extern unsigned long total_memory; /* in mm/init */
69 unsigned char __res[sizeof (bd_t)];
71 static int cds_pci_slot = 2;
72 static volatile u8 * cadmus;
74 /* Internal interrupts are all Level Sensitive, and Positive Polarity */
75 static u_char mpc85xx_cds_openpic_initsenses[] __initdata = {
76 MPC85XX_INTERNAL_IRQ_SENSES,
77 #if defined(CONFIG_PCI)
78 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 0: PCI1 slot */
79 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 1: PCI1 slot */
80 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 2: PCI1 slot */
81 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 3: PCI1 slot */
83 0x0, /* External 0: */
84 0x0, /* External 1: */
85 0x0, /* External 2: */
86 0x0, /* External 3: */
88 0x0, /* External 4: */
89 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 5: PHY */
90 0x0, /* External 6: */
91 0x0, /* External 7: */
92 0x0, /* External 8: */
93 0x0, /* External 9: */
94 0x0, /* External 10: */
95 #if defined(CONFIG_85xx_PCI2) && defined(CONFIG_PCI)
96 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 11: PCI2 slot 0 */
98 0x0, /* External 11: */
102 /* ************************************************************************ */
104 mpc85xx_cds_show_cpuinfo(struct seq_file *m)
106 uint pvid, svid, phid1;
107 uint memsize = total_memory;
108 bd_t *binfo = (bd_t *) __res;
111 /* get the core frequency */
112 freq = binfo->bi_intfreq;
114 pvid = mfspr(SPRN_PVR);
115 svid = mfspr(SPRN_SVR);
117 seq_printf(m, "Vendor\t\t: Freescale Semiconductor\n");
118 seq_printf(m, "Machine\t\t: CDS - MPC%s (%x)\n", cur_ppc_sys_spec->ppc_sys_name, cadmus[CM_VER]);
119 seq_printf(m, "clock\t\t: %dMHz\n", freq / 1000000);
120 seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
121 seq_printf(m, "SVR\t\t: 0x%x\n", svid);
123 /* Display cpu Pll setting */
124 phid1 = mfspr(SPRN_HID1);
125 seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
127 /* Display the amount of memory */
128 seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
134 static void cpm2_cascade(int irq, void *dev_id, struct pt_regs *regs)
136 while((irq = cpm2_get_irq(regs)) >= 0)
140 static struct irqaction cpm2_irqaction = {
141 .handler = cpm2_cascade,
142 .flags = SA_INTERRUPT,
143 .mask = CPU_MASK_NONE,
144 .name = "cpm2_cascade",
146 #endif /* CONFIG_CPM2 */
149 mpc85xx_cds_init_IRQ(void)
151 bd_t *binfo = (bd_t *) __res;
154 /* Determine the Physical Address of the OpenPIC regs */
155 phys_addr_t OpenPIC_PAddr = binfo->bi_immr_base + MPC85xx_OPENPIC_OFFSET;
156 OpenPIC_Addr = ioremap(OpenPIC_PAddr, MPC85xx_OPENPIC_SIZE);
157 OpenPIC_InitSenses = mpc85xx_cds_openpic_initsenses;
158 OpenPIC_NumInitSenses = sizeof (mpc85xx_cds_openpic_initsenses);
160 /* Skip reserved space and internal sources */
161 #ifdef CONFIG_MPC8548
162 openpic_set_sources(0, 48, OpenPIC_Addr + 0x10200);
164 openpic_set_sources(0, 32, OpenPIC_Addr + 0x10200);
166 /* Map PIC IRQs 0-11 */
167 openpic_set_sources(48, 12, OpenPIC_Addr + 0x10000);
169 /* we let openpic interrupts starting from an offset, to
170 * leave space for cascading interrupts underneath.
172 openpic_init(MPC85xx_OPENPIC_IRQ_OFFSET);
175 openpic_hookup_cascade(PIRQ0A, "82c59 cascade", i8259_irq);
177 for (i = 0; i < NUM_8259_INTERRUPTS; i++)
178 irq_desc[i].handler = &i8259_pic;
187 setup_irq(MPC85xx_IRQ_CPM, &cpm2_irqaction);
198 mpc85xx_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
200 struct pci_controller *hose = pci_bus_to_hose(dev->bus->number);
204 /* Handle PCI1 interrupts */
205 char pci_irq_table[][4] =
207 * PCI IDSEL/INTPIN->INTLINE
211 /* Note IRQ assignment for slots is based on which slot the elysium is
212 * in -- in this setup elysium is in slot #2 (this PIRQA as first
213 * interrupt on slot */
215 { 0, 1, 2, 3 }, /* 16 - PMC */
216 { 0, 1, 2, 3 }, /* 17 P2P (Tsi320) */
217 { 0, 1, 2, 3 }, /* 18 - Slot 1 */
218 { 1, 2, 3, 0 }, /* 19 - Slot 2 */
219 { 2, 3, 0, 1 }, /* 20 - Slot 3 */
220 { 3, 0, 1, 2 }, /* 21 - Slot 4 */
223 const long min_idsel = 16, max_idsel = 21, irqs_per_slot = 4;
226 for (i = 0; i < 6; i++)
227 for (j = 0; j < 4; j++)
228 pci_irq_table[i][j] =
229 ((pci_irq_table[i][j] + 5 -
230 cds_pci_slot) & 0x3) + PIRQ0A;
232 return PCI_IRQ_TABLE_LOOKUP;
234 /* Handle PCI2 interrupts (if we have one) */
235 char pci_irq_table[][4] =
238 * We only have one slot and one interrupt
239 * going to PIRQA - PIRQD */
240 { PIRQ1A, PIRQ1A, PIRQ1A, PIRQ1A }, /* 21 - slot 0 */
243 const long min_idsel = 21, max_idsel = 21, irqs_per_slot = 4;
245 return PCI_IRQ_TABLE_LOOKUP;
249 #define ARCADIA_HOST_BRIDGE_IDSEL 17
250 #define ARCADIA_2ND_BRIDGE_IDSEL 3
252 extern int mpc85xx_pci1_last_busno;
255 mpc85xx_exclude_device(u_char bus, u_char devfn)
257 if (bus == 0 && PCI_SLOT(devfn) == 0)
258 return PCIBIOS_DEVICE_NOT_FOUND;
259 #ifdef CONFIG_85xx_PCI2
260 if (mpc85xx_pci1_last_busno)
261 if (bus == (mpc85xx_pci1_last_busno + 1) && PCI_SLOT(devfn) == 0)
262 return PCIBIOS_DEVICE_NOT_FOUND;
264 /* We explicitly do not go past the Tundra 320 Bridge */
265 if ((bus == 1) && (PCI_SLOT(devfn) == ARCADIA_2ND_BRIDGE_IDSEL))
266 return PCIBIOS_DEVICE_NOT_FOUND;
267 if ((bus == 0) && (PCI_SLOT(devfn) == ARCADIA_2ND_BRIDGE_IDSEL))
268 return PCIBIOS_DEVICE_NOT_FOUND;
270 return PCIBIOS_SUCCESSFUL;
274 mpc85xx_cds_enable_via(struct pci_controller *hose)
279 early_read_config_dword(hose, 0, 0x88, PCI_CLASS_REVISION, &pci_class);
280 if ((pci_class >> 16) != PCI_CLASS_BRIDGE_PCI)
283 /* Configure P2P so that we can reach bus 1 */
284 early_write_config_byte(hose, 0, 0x88, PCI_PRIMARY_BUS, 0);
285 early_write_config_byte(hose, 0, 0x88, PCI_SECONDARY_BUS, 1);
286 early_write_config_byte(hose, 0, 0x88, PCI_SUBORDINATE_BUS, 0xff);
288 early_read_config_word(hose, 1, 0x10, PCI_VENDOR_ID, &vid);
289 early_read_config_word(hose, 1, 0x10, PCI_DEVICE_ID, &did);
291 if ((vid != PCI_VENDOR_ID_VIA) ||
292 (did != PCI_DEVICE_ID_VIA_82C686))
295 /* Enable USB and IDE functions */
296 early_write_config_byte(hose, 1, 0x10, 0x48, 0x08);
300 mpc85xx_cds_fixup_via(struct pci_controller *hose)
305 early_read_config_dword(hose, 0, 0x88, PCI_CLASS_REVISION, &pci_class);
306 if ((pci_class >> 16) != PCI_CLASS_BRIDGE_PCI)
310 * Force the backplane P2P bridge to have a window
311 * open from 0x00000000-0x00001fff in PCI I/O space.
312 * This allows legacy I/O (i8259, etc) on the VIA
313 * southbridge to be accessed.
315 early_write_config_byte(hose, 0, 0x88, PCI_IO_BASE, 0x00);
316 early_write_config_word(hose, 0, 0x88, PCI_IO_BASE_UPPER16, 0x0000);
317 early_write_config_byte(hose, 0, 0x88, PCI_IO_LIMIT, 0x10);
318 early_write_config_word(hose, 0, 0x88, PCI_IO_LIMIT_UPPER16, 0x0000);
320 early_read_config_word(hose, 1, 0x10, PCI_VENDOR_ID, &vid);
321 early_read_config_word(hose, 1, 0x10, PCI_DEVICE_ID, &did);
322 if ((vid != PCI_VENDOR_ID_VIA) ||
323 (did != PCI_DEVICE_ID_VIA_82C686))
327 * Since the P2P window was forced to cover the fixed
328 * legacy I/O addresses, it is necessary to manually
329 * place the base addresses for the IDE and USB functions
330 * within this window.
332 /* Function 1, IDE */
333 early_write_config_dword(hose, 1, 0x11, PCI_BASE_ADDRESS_0, 0x1ff8);
334 early_write_config_dword(hose, 1, 0x11, PCI_BASE_ADDRESS_1, 0x1ff4);
335 early_write_config_dword(hose, 1, 0x11, PCI_BASE_ADDRESS_2, 0x1fe8);
336 early_write_config_dword(hose, 1, 0x11, PCI_BASE_ADDRESS_3, 0x1fe4);
337 early_write_config_dword(hose, 1, 0x11, PCI_BASE_ADDRESS_4, 0x1fd0);
339 /* Function 2, USB ports 0-1 */
340 early_write_config_dword(hose, 1, 0x12, PCI_BASE_ADDRESS_4, 0x1fa0);
342 /* Function 3, USB ports 2-3 */
343 early_write_config_dword(hose, 1, 0x13, PCI_BASE_ADDRESS_4, 0x1f80);
345 /* Function 5, Power Management */
346 early_write_config_dword(hose, 1, 0x15, PCI_BASE_ADDRESS_0, 0x1e00);
347 early_write_config_dword(hose, 1, 0x15, PCI_BASE_ADDRESS_1, 0x1dfc);
348 early_write_config_dword(hose, 1, 0x15, PCI_BASE_ADDRESS_2, 0x1df8);
350 /* Function 6, AC97 Interface */
351 early_write_config_dword(hose, 1, 0x16, PCI_BASE_ADDRESS_0, 0x1c00);
355 mpc85xx_cds_pcibios_fixup(void)
357 struct pci_dev *dev = NULL;
360 if ((dev = pci_find_device(PCI_VENDOR_ID_VIA,
361 PCI_DEVICE_ID_VIA_82C586_1, NULL))) {
363 * U-Boot does not set the enable bits
364 * for the IDE device. Force them on here.
366 pci_read_config_byte(dev, 0x40, &c);
367 c |= 0x03; /* IDE: Chip Enable Bits */
368 pci_write_config_byte(dev, 0x40, c);
371 * Since only primary interface works, force the
372 * IDE function to standard primary IDE interrupt
376 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
380 * Force legacy USB interrupt routing
382 if ((dev = pci_find_device(PCI_VENDOR_ID_VIA,
383 PCI_DEVICE_ID_VIA_82C586_2, NULL))) {
385 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, 10);
388 if ((dev = pci_find_device(PCI_VENDOR_ID_VIA,
389 PCI_DEVICE_ID_VIA_82C586_2, dev))) {
391 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, 11);
394 #endif /* CONFIG_PCI */
398 /* ************************************************************************
400 * Setup the architecture
404 mpc85xx_cds_setup_arch(void)
406 bd_t *binfo = (bd_t *) __res;
408 struct gianfar_platform_data *pdata;
410 /* get the core frequency */
411 freq = binfo->bi_intfreq;
413 printk("mpc85xx_cds_setup_arch\n");
419 cadmus = ioremap(CADMUS_BASE, CADMUS_SIZE);
420 cds_pci_slot = ((cadmus[CM_CSR] >> 6) & 0x3) + 1;
421 printk("CDS Version = %x in PCI slot %d\n", cadmus[CM_VER], cds_pci_slot);
423 /* Setup TODC access */
424 TODC_INIT(TODC_TYPE_DS1743,
427 ioremap(CDS_RTC_ADDR, CDS_RTC_SIZE),
430 /* Set loops_per_jiffy to a half-way reasonable value,
431 for use until calibrate_delay gets called. */
432 loops_per_jiffy = freq / HZ;
435 /* VIA IDE configuration */
436 ppc_md.pcibios_fixup = mpc85xx_cds_pcibios_fixup;
438 /* setup PCI host bridges */
439 mpc85xx_setup_hose();
442 #ifdef CONFIG_SERIAL_8250
443 mpc85xx_early_serial_map();
446 #ifdef CONFIG_SERIAL_TEXT_DEBUG
447 /* Invalidate the entry we stole earlier the serial ports
448 * should be properly mapped */
449 invalidate_tlbcam_entry(num_tlbcam_entries - 1);
452 /* setup the board related information for the enet controllers */
453 pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC1);
455 pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR;
456 pdata->interruptPHY = MPC85xx_IRQ_EXT5;
458 /* fixup phy address */
459 pdata->phy_reg_addr += binfo->bi_immr_base;
460 memcpy(pdata->mac_addr, binfo->bi_enetaddr, 6);
463 pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC2);
465 pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR;
466 pdata->interruptPHY = MPC85xx_IRQ_EXT5;
468 /* fixup phy address */
469 pdata->phy_reg_addr += binfo->bi_immr_base;
470 memcpy(pdata->mac_addr, binfo->bi_enet1addr, 6);
473 pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_eTSEC1);
475 pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR;
476 pdata->interruptPHY = MPC85xx_IRQ_EXT5;
478 /* fixup phy address */
479 pdata->phy_reg_addr += binfo->bi_immr_base;
480 memcpy(pdata->mac_addr, binfo->bi_enetaddr, 6);
483 pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_eTSEC2);
485 pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR;
486 pdata->interruptPHY = MPC85xx_IRQ_EXT5;
488 /* fixup phy address */
489 pdata->phy_reg_addr += binfo->bi_immr_base;
490 memcpy(pdata->mac_addr, binfo->bi_enet1addr, 6);
493 ppc_sys_device_remove(MPC85xx_eTSEC3);
494 ppc_sys_device_remove(MPC85xx_eTSEC4);
496 #ifdef CONFIG_BLK_DEV_INITRD
498 ROOT_DEV = Root_RAM0;
501 #ifdef CONFIG_ROOT_NFS
504 ROOT_DEV = Root_HDA1;
508 /* ************************************************************************ */
510 platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
511 unsigned long r6, unsigned long r7)
513 /* parse_bootinfo must always be called first */
514 parse_bootinfo(find_bootinfo());
517 * If we were passed in a board information, copy it into the
518 * residual data area.
521 memcpy((void *) __res, (void *) (r3 + KERNELBASE),
525 #ifdef CONFIG_SERIAL_TEXT_DEBUG
527 bd_t *binfo = (bd_t *) __res;
530 /* Use the last TLB entry to map CCSRBAR to allow access to DUART regs */
531 settlbcam(num_tlbcam_entries - 1, binfo->bi_immr_base,
532 binfo->bi_immr_base, MPC85xx_CCSRBAR_SIZE, _PAGE_IO, 0);
534 memset(&p, 0, sizeof (p));
535 p.iotype = SERIAL_IO_MEM;
536 p.membase = (void *) binfo->bi_immr_base + MPC85xx_UART0_OFFSET;
537 p.uartclk = binfo->bi_busfreq;
541 memset(&p, 0, sizeof (p));
542 p.iotype = SERIAL_IO_MEM;
543 p.membase = (void *) binfo->bi_immr_base + MPC85xx_UART1_OFFSET;
544 p.uartclk = binfo->bi_busfreq;
550 #if defined(CONFIG_BLK_DEV_INITRD)
552 * If the init RAM disk has been configured in, and there's a valid
553 * starting address for it, set it up.
556 initrd_start = r4 + KERNELBASE;
557 initrd_end = r5 + KERNELBASE;
559 #endif /* CONFIG_BLK_DEV_INITRD */
561 /* Copy the kernel command line arguments to a safe place. */
564 *(char *) (r7 + KERNELBASE) = 0;
565 strcpy(cmd_line, (char *) (r6 + KERNELBASE));
568 identify_ppc_sys_by_id(mfspr(SPRN_SVR));
570 /* setup the PowerPC module struct */
571 ppc_md.setup_arch = mpc85xx_cds_setup_arch;
572 ppc_md.show_cpuinfo = mpc85xx_cds_show_cpuinfo;
574 ppc_md.init_IRQ = mpc85xx_cds_init_IRQ;
575 ppc_md.get_irq = openpic_get_irq;
577 ppc_md.restart = mpc85xx_restart;
578 ppc_md.power_off = mpc85xx_power_off;
579 ppc_md.halt = mpc85xx_halt;
581 ppc_md.find_end_of_memory = mpc85xx_find_end_of_memory;
583 ppc_md.calibrate_decr = mpc85xx_calibrate_decr;
585 ppc_md.time_init = todc_time_init;
586 ppc_md.set_rtc_time = todc_set_rtc_time;
587 ppc_md.get_rtc_time = todc_get_rtc_time;
589 ppc_md.nvram_read_val = todc_direct_read_val;
590 ppc_md.nvram_write_val = todc_direct_write_val;
592 #if defined(CONFIG_SERIAL_8250) && defined(CONFIG_SERIAL_TEXT_DEBUG)
593 ppc_md.progress = gen550_progress;
594 #endif /* CONFIG_SERIAL_8250 && CONFIG_SERIAL_TEXT_DEBUG */
595 #if defined(CONFIG_SERIAL_8250) && defined(CONFIG_KGDB)
596 ppc_md.early_serial_map = mpc85xx_early_serial_map;
597 #endif /* CONFIG_SERIAL_8250 && CONFIG_KGDB */
600 ppc_md.progress("mpc85xx_cds_init(): exit", 0);