2 * arch/ppc/platforms/85xx/mpc85xx_ads_common.c
4 * MPC85xx ADS board common 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>
31 #include <asm/system.h>
32 #include <asm/pgtable.h>
34 #include <asm/atomic.h>
37 #include <asm/machdep.h>
38 #include <asm/open_pic.h>
39 #include <asm/bootinfo.h>
40 #include <asm/pci-bridge.h>
41 #include <asm/mpc85xx.h>
43 #include <asm/immap_85xx.h>
44 #include <asm/ppc_sys.h>
46 #include <mm/mmu_decl.h>
48 #include <platforms/85xx/mpc85xx_ads_common.h>
51 unsigned long isa_io_base = 0;
52 unsigned long isa_mem_base = 0;
55 extern unsigned long total_memory; /* in mm/init */
57 unsigned char __res[sizeof (bd_t)];
59 /* Internal interrupts are all Level Sensitive, and Positive Polarity */
60 static u_char mpc85xx_ads_openpic_initsenses[] __initdata = {
61 MPC85XX_INTERNAL_IRQ_SENSES,
62 0x0, /* External 0: */
63 #if defined(CONFIG_PCI)
64 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 1: PCI slot 0 */
65 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 2: PCI slot 1 */
66 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 3: PCI slot 2 */
67 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 4: PCI slot 3 */
69 0x0, /* External 1: */
70 0x0, /* External 2: */
71 0x0, /* External 3: */
72 0x0, /* External 4: */
74 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 5: PHY */
75 0x0, /* External 6: */
76 (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* External 7: PHY */
77 0x0, /* External 8: */
78 0x0, /* External 9: */
79 0x0, /* External 10: */
80 0x0, /* External 11: */
83 /* ************************************************************************ */
85 mpc85xx_ads_show_cpuinfo(struct seq_file *m)
87 uint pvid, svid, phid1;
88 uint memsize = total_memory;
89 bd_t *binfo = (bd_t *) __res;
92 /* get the core frequency */
93 freq = binfo->bi_intfreq;
95 pvid = mfspr(SPRN_PVR);
96 svid = mfspr(SPRN_SVR);
98 seq_printf(m, "Vendor\t\t: Freescale Semiconductor\n");
99 seq_printf(m, "Machine\t\t: mpc%sads\n", cur_ppc_sys_spec->ppc_sys_name);
100 seq_printf(m, "clock\t\t: %dMHz\n", freq / 1000000);
101 seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
102 seq_printf(m, "SVR\t\t: 0x%x\n", svid);
104 /* Display cpu Pll setting */
105 phid1 = mfspr(SPRN_HID1);
106 seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
108 /* Display the amount of memory */
109 seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
115 mpc85xx_ads_init_IRQ(void)
117 bd_t *binfo = (bd_t *) __res;
118 /* Determine the Physical Address of the OpenPIC regs */
119 phys_addr_t OpenPIC_PAddr =
120 binfo->bi_immr_base + MPC85xx_OPENPIC_OFFSET;
121 OpenPIC_Addr = ioremap(OpenPIC_PAddr, MPC85xx_OPENPIC_SIZE);
122 OpenPIC_InitSenses = mpc85xx_ads_openpic_initsenses;
123 OpenPIC_NumInitSenses = sizeof (mpc85xx_ads_openpic_initsenses);
125 /* Skip reserved space and internal sources */
126 openpic_set_sources(0, 32, OpenPIC_Addr + 0x10200);
127 /* Map PIC IRQs 0-11 */
128 openpic_set_sources(48, 12, OpenPIC_Addr + 0x10000);
130 /* we let openpic interrupts starting from an offset, to
131 * leave space for cascading interrupts underneath.
133 openpic_init(MPC85xx_OPENPIC_IRQ_OFFSET);
144 mpc85xx_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
146 static char pci_irq_table[][4] =
148 * This is little evil, but works around the fact
149 * that revA boards have IDSEL starting at 18
150 * and others boards (older) start at 12
152 * PCI IDSEL/INTPIN->INTLINE
156 {PIRQA, PIRQB, PIRQC, PIRQD}, /* IDSEL 2 */
157 {PIRQD, PIRQA, PIRQB, PIRQC},
158 {PIRQC, PIRQD, PIRQA, PIRQB},
159 {PIRQB, PIRQC, PIRQD, PIRQA}, /* IDSEL 5 */
160 {0, 0, 0, 0}, /* -- */
161 {0, 0, 0, 0}, /* -- */
162 {0, 0, 0, 0}, /* -- */
163 {0, 0, 0, 0}, /* -- */
164 {0, 0, 0, 0}, /* -- */
165 {0, 0, 0, 0}, /* -- */
166 {PIRQA, PIRQB, PIRQC, PIRQD}, /* IDSEL 12 */
167 {PIRQD, PIRQA, PIRQB, PIRQC},
168 {PIRQC, PIRQD, PIRQA, PIRQB},
169 {PIRQB, PIRQC, PIRQD, PIRQA}, /* IDSEL 15 */
170 {0, 0, 0, 0}, /* -- */
171 {0, 0, 0, 0}, /* -- */
172 {PIRQA, PIRQB, PIRQC, PIRQD}, /* IDSEL 18 */
173 {PIRQD, PIRQA, PIRQB, PIRQC},
174 {PIRQC, PIRQD, PIRQA, PIRQB},
175 {PIRQB, PIRQC, PIRQD, PIRQA}, /* IDSEL 21 */
178 const long min_idsel = 2, max_idsel = 21, irqs_per_slot = 4;
179 return PCI_IRQ_TABLE_LOOKUP;
183 mpc85xx_exclude_device(u_char bus, u_char devfn)
185 if (bus == 0 && PCI_SLOT(devfn) == 0)
186 return PCIBIOS_DEVICE_NOT_FOUND;
188 return PCIBIOS_SUCCESSFUL;
191 #endif /* CONFIG_PCI */