2 * TQM85xx (40/41/55/60) board specific routines
4 * Copyright (c) 2005 DENX Software Engineering
5 * Stefan Roese <sr@denx.de>
7 * Based on original work by
8 * Kumar Gala <galak@kernel.crashing.org>
9 * Copyright 2004 Freescale Semiconductor Inc.
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the
13 * Free Software Foundation; either version 2 of the License, or (at your
14 * option) any later version.
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/root_dev.h>
29 #include <linux/serial.h>
30 #include <linux/tty.h> /* for linux/serial_core.h */
31 #include <linux/serial_core.h>
32 #include <linux/initrd.h>
33 #include <linux/module.h>
34 #include <linux/fsl_devices.h>
36 #include <asm/system.h>
37 #include <asm/pgtable.h>
39 #include <asm/atomic.h>
42 #include <asm/machdep.h>
43 #include <asm/open_pic.h>
44 #include <asm/bootinfo.h>
45 #include <asm/pci-bridge.h>
46 #include <asm/mpc85xx.h>
48 #include <asm/immap_85xx.h>
50 #include <asm/ppc_sys.h>
52 #include <mm/mmu_decl.h>
54 #include <syslib/ppc85xx_setup.h>
55 #include <syslib/cpm2_pic.h>
56 #include <syslib/ppc85xx_common.h>
57 #include <syslib/ppc85xx_rio.h>
60 unsigned long isa_io_base = 0;
61 unsigned long isa_mem_base = 0;
65 extern unsigned long total_memory; /* in mm/init */
67 unsigned char __res[sizeof (bd_t)];
69 /* Internal interrupts are all Level Sensitive, and Positive Polarity */
70 static u_char tqm85xx_openpic_initsenses[] __initdata = {
71 MPC85XX_INTERNAL_IRQ_SENSES,
72 0x0, /* External 0: */
73 0x0, /* External 1: */
74 #if defined(CONFIG_PCI)
75 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 2: PCI INTA */
76 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 3: PCI INTB */
78 0x0, /* External 2: */
79 0x0, /* External 3: */
81 0x0, /* External 4: */
82 0x0, /* External 5: */
83 0x0, /* External 6: */
84 0x0, /* External 7: */
85 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 8: PHY */
86 0x0, /* External 9: */
87 0x0, /* External 10: */
88 0x0, /* External 11: */
91 /* ************************************************************************
93 * Setup the architecture
97 tqm85xx_setup_arch(void)
99 bd_t *binfo = (bd_t *) __res;
101 struct gianfar_platform_data *pdata;
102 struct gianfar_mdio_data *mdata;
104 #ifdef CONFIG_MPC8560
108 /* get the core frequency */
109 freq = binfo->bi_intfreq;
112 ppc_md.progress("tqm85xx_setup_arch()", 0);
114 /* Set loops_per_jiffy to a half-way reasonable value,
115 for use until calibrate_delay gets called. */
116 loops_per_jiffy = freq / HZ;
119 /* setup PCI host bridges */
120 mpc85xx_setup_hose();
123 #ifndef CONFIG_MPC8560
124 #if defined(CONFIG_SERIAL_8250)
125 mpc85xx_early_serial_map();
128 #ifdef CONFIG_SERIAL_TEXT_DEBUG
129 /* Invalidate the entry we stole earlier the serial ports
130 * should be properly mapped */
131 invalidate_tlbcam_entry(num_tlbcam_entries - 1);
133 #endif /* CONFIG_MPC8560 */
135 /* setup the board related info for the MDIO bus */
136 mdata = (struct gianfar_mdio_data *) ppc_sys_get_pdata(MPC85xx_MDIO);
138 mdata->irq[0] = MPC85xx_IRQ_EXT8;
139 mdata->irq[1] = MPC85xx_IRQ_EXT8;
140 mdata->irq[2] = PHY_POLL;
141 mdata->irq[3] = MPC85xx_IRQ_EXT8;
142 mdata->irq[31] = PHY_POLL;
144 /* setup the board related information for the enet controllers */
145 pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC1);
147 pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR;
150 memcpy(pdata->mac_addr, binfo->bi_enetaddr, 6);
153 pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC2);
155 pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR;
158 memcpy(pdata->mac_addr, binfo->bi_enet1addr, 6);
161 #ifdef CONFIG_MPC8540
162 pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_FEC);
164 pdata->board_flags = 0;
167 memcpy(pdata->mac_addr, binfo->bi_enet2addr, 6);
171 #ifdef CONFIG_BLK_DEV_INITRD
173 ROOT_DEV = Root_RAM0;
176 #ifdef CONFIG_ROOT_NFS
179 ROOT_DEV = Root_HDA1;
183 #ifdef CONFIG_MPC8560
184 static irqreturn_t cpm2_cascade(int irq, void *dev_id)
186 while ((irq = cpm2_get_irq()) >= 0)
191 static struct irqaction cpm2_irqaction = {
192 .handler = cpm2_cascade,
193 .flags = IRQF_DISABLED,
194 .mask = CPU_MASK_NONE,
195 .name = "cpm2_cascade",
197 #endif /* CONFIG_MPC8560 */
200 tqm85xx_init_IRQ(void)
202 bd_t *binfo = (bd_t *) __res;
204 /* Determine the Physical Address of the OpenPIC regs */
205 phys_addr_t OpenPIC_PAddr =
206 binfo->bi_immr_base + MPC85xx_OPENPIC_OFFSET;
207 OpenPIC_Addr = ioremap(OpenPIC_PAddr, MPC85xx_OPENPIC_SIZE);
208 OpenPIC_InitSenses = tqm85xx_openpic_initsenses;
209 OpenPIC_NumInitSenses = sizeof (tqm85xx_openpic_initsenses);
211 /* Skip reserved space and internal sources */
212 openpic_set_sources(0, 32, OpenPIC_Addr + 0x10200);
214 /* Map PIC IRQs 0-11 */
215 openpic_set_sources(48, 12, OpenPIC_Addr + 0x10000);
217 /* we let openpic interrupts starting from an offset, to
218 * leave space for cascading interrupts underneath.
220 openpic_init(MPC85xx_OPENPIC_IRQ_OFFSET);
222 #ifdef CONFIG_MPC8560
226 setup_irq(MPC85xx_IRQ_CPM, &cpm2_irqaction);
227 #endif /* CONFIG_MPC8560 */
232 int tqm85xx_show_cpuinfo(struct seq_file *m)
234 uint pvid, svid, phid1;
235 uint memsize = total_memory;
236 bd_t *binfo = (bd_t *) __res;
239 /* get the core frequency */
240 freq = binfo->bi_intfreq;
242 pvid = mfspr(SPRN_PVR);
243 svid = mfspr(SPRN_SVR);
245 seq_printf(m, "Vendor\t\t: TQ Components\n");
246 seq_printf(m, "Machine\t\t: TQM%s\n", cur_ppc_sys_spec->ppc_sys_name);
247 seq_printf(m, "clock\t\t: %dMHz\n", freq / 1000000);
248 seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
249 seq_printf(m, "SVR\t\t: 0x%x\n", svid);
251 /* Display cpu Pll setting */
252 phid1 = mfspr(SPRN_HID1);
253 seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
255 /* Display the amount of memory */
256 seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
261 #if defined(CONFIG_I2C) && defined(CONFIG_SENSORS_DS1337)
262 extern ulong ds1337_get_rtc_time(void);
263 extern int ds1337_set_rtc_time(unsigned long nowtime);
266 tqm85xx_rtc_hookup(void)
270 ppc_md.set_rtc_time = ds1337_set_rtc_time;
271 ppc_md.get_rtc_time = ds1337_get_rtc_time;
274 tv.tv_sec = (ppc_md.get_rtc_time)();
275 do_settimeofday(&tv);
279 late_initcall(tqm85xx_rtc_hookup);
286 int mpc85xx_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
288 static char pci_irq_table[][4] =
290 * PCI IDSEL/INTPIN->INTLINE
294 {PIRQA, PIRQB, 0, 0},
297 const long min_idsel = 0x1c, max_idsel = 0x1c, irqs_per_slot = 4;
298 return PCI_IRQ_TABLE_LOOKUP;
301 int mpc85xx_exclude_device(u_char bus, u_char devfn)
303 if (bus == 0 && PCI_SLOT(devfn) == 0)
304 return PCIBIOS_DEVICE_NOT_FOUND;
306 return PCIBIOS_SUCCESSFUL;
309 #endif /* CONFIG_PCI */
311 #ifdef CONFIG_RAPIDIO
312 void platform_rio_init(void)
314 /* 512MB RIO LAW at 0xc0000000 */
315 mpc85xx_rio_setup(0xc0000000, 0x20000000);
317 #endif /* CONFIG_RAPIDIO */
319 /* ************************************************************************ */
321 platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
322 unsigned long r6, unsigned long r7)
324 /* parse_bootinfo must always be called first */
325 parse_bootinfo(find_bootinfo());
328 * If we were passed in a board information, copy it into the
329 * residual data area.
332 memcpy((void *) __res, (void *) (r3 + KERNELBASE),
336 #if defined(CONFIG_SERIAL_TEXT_DEBUG) && !defined(CONFIG_MPC8560)
338 bd_t *binfo = (bd_t *) __res;
341 /* Use the last TLB entry to map CCSRBAR to allow access to DUART regs */
342 settlbcam(num_tlbcam_entries - 1, binfo->bi_immr_base,
343 binfo->bi_immr_base, MPC85xx_CCSRBAR_SIZE, _PAGE_IO, 0);
345 memset(&p, 0, sizeof (p));
347 p.membase = (void *) binfo->bi_immr_base + MPC85xx_UART0_OFFSET;
348 p.uartclk = binfo->bi_busfreq;
352 memset(&p, 0, sizeof (p));
354 p.membase = (void *) binfo->bi_immr_base + MPC85xx_UART1_OFFSET;
355 p.uartclk = binfo->bi_busfreq;
361 #if defined(CONFIG_BLK_DEV_INITRD)
363 * If the init RAM disk has been configured in, and there's a valid
364 * starting address for it, set it up.
367 initrd_start = r4 + KERNELBASE;
368 initrd_end = r5 + KERNELBASE;
370 #endif /* CONFIG_BLK_DEV_INITRD */
372 /* Copy the kernel command line arguments to a safe place. */
375 *(char *) (r7 + KERNELBASE) = 0;
376 strcpy(cmd_line, (char *) (r6 + KERNELBASE));
379 identify_ppc_sys_by_id(mfspr(SPRN_SVR));
381 /* setup the PowerPC module struct */
382 ppc_md.setup_arch = tqm85xx_setup_arch;
383 ppc_md.show_cpuinfo = tqm85xx_show_cpuinfo;
385 ppc_md.init_IRQ = tqm85xx_init_IRQ;
386 ppc_md.get_irq = openpic_get_irq;
388 ppc_md.restart = mpc85xx_restart;
389 ppc_md.power_off = mpc85xx_power_off;
390 ppc_md.halt = mpc85xx_halt;
392 ppc_md.find_end_of_memory = mpc85xx_find_end_of_memory;
394 ppc_md.time_init = NULL;
395 ppc_md.set_rtc_time = NULL;
396 ppc_md.get_rtc_time = NULL;
397 ppc_md.calibrate_decr = mpc85xx_calibrate_decr;
399 #ifndef CONFIG_MPC8560
400 #if defined(CONFIG_SERIAL_8250) && defined(CONFIG_SERIAL_TEXT_DEBUG)
401 ppc_md.progress = gen550_progress;
402 #endif /* CONFIG_SERIAL_8250 && CONFIG_SERIAL_TEXT_DEBUG */
403 #if defined(CONFIG_SERIAL_8250) && defined(CONFIG_KGDB)
404 ppc_md.early_serial_map = mpc85xx_early_serial_map;
405 #endif /* CONFIG_SERIAL_8250 && CONFIG_KGDB */
406 #endif /* CONFIG_MPC8560 */
409 ppc_md.progress("tqm85xx_init(): exit", 0);