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);