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1da177e4 LT |
1 | /* |
2 | * arch/ppc/platforms/85xx/mpc8560_ads.c | |
3 | * | |
4 | * MPC8560ADS board specific routines | |
5 | * | |
6 | * Maintainer: Kumar Gala <kumar.gala@freescale.com> | |
7 | * | |
8 | * Copyright 2004 Freescale Semiconductor Inc. | |
9 | * | |
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. | |
14 | */ | |
15 | ||
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/root_dev.h> | |
30 | #include <linux/serial.h> | |
31 | #include <linux/tty.h> /* for linux/serial_core.h */ | |
32 | #include <linux/serial_core.h> | |
33 | #include <linux/initrd.h> | |
34 | #include <linux/module.h> | |
35 | #include <linux/fsl_devices.h> | |
36 | ||
37 | #include <asm/system.h> | |
38 | #include <asm/pgtable.h> | |
39 | #include <asm/page.h> | |
40 | #include <asm/atomic.h> | |
41 | #include <asm/time.h> | |
42 | #include <asm/io.h> | |
43 | #include <asm/machdep.h> | |
44 | #include <asm/prom.h> | |
45 | #include <asm/open_pic.h> | |
46 | #include <asm/bootinfo.h> | |
47 | #include <asm/pci-bridge.h> | |
48 | #include <asm/mpc85xx.h> | |
49 | #include <asm/irq.h> | |
50 | #include <asm/immap_85xx.h> | |
51 | #include <asm/kgdb.h> | |
52 | #include <asm/ppc_sys.h> | |
53 | #include <asm/cpm2.h> | |
54 | #include <mm/mmu_decl.h> | |
55 | ||
56 | #include <syslib/cpm2_pic.h> | |
57 | #include <syslib/ppc85xx_common.h> | |
58 | #include <syslib/ppc85xx_setup.h> | |
59 | ||
60 | extern void cpm2_reset(void); | |
61 | ||
62 | /* ************************************************************************ | |
63 | * | |
64 | * Setup the architecture | |
65 | * | |
66 | */ | |
67 | ||
68 | static void __init | |
69 | mpc8560ads_setup_arch(void) | |
70 | { | |
71 | bd_t *binfo = (bd_t *) __res; | |
72 | unsigned int freq; | |
73 | struct gianfar_platform_data *pdata; | |
74 | ||
75 | cpm2_reset(); | |
76 | ||
77 | /* get the core frequency */ | |
78 | freq = binfo->bi_intfreq; | |
79 | ||
80 | if (ppc_md.progress) | |
81 | ppc_md.progress("mpc8560ads_setup_arch()", 0); | |
82 | ||
83 | /* Set loops_per_jiffy to a half-way reasonable value, | |
84 | for use until calibrate_delay gets called. */ | |
85 | loops_per_jiffy = freq / HZ; | |
86 | ||
87 | #ifdef CONFIG_PCI | |
88 | /* setup PCI host bridges */ | |
89 | mpc85xx_setup_hose(); | |
90 | #endif | |
91 | ||
92 | /* setup the board related information for the enet controllers */ | |
93 | pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC1); | |
94 | pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR; | |
95 | pdata->interruptPHY = MPC85xx_IRQ_EXT5; | |
96 | pdata->phyid = 0; | |
97 | /* fixup phy address */ | |
98 | pdata->phy_reg_addr += binfo->bi_immr_base; | |
99 | memcpy(pdata->mac_addr, binfo->bi_enetaddr, 6); | |
100 | ||
101 | pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC2); | |
102 | pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR; | |
103 | pdata->interruptPHY = MPC85xx_IRQ_EXT5; | |
104 | pdata->phyid = 1; | |
105 | /* fixup phy address */ | |
106 | pdata->phy_reg_addr += binfo->bi_immr_base; | |
107 | memcpy(pdata->mac_addr, binfo->bi_enet1addr, 6); | |
108 | ||
109 | #ifdef CONFIG_BLK_DEV_INITRD | |
110 | if (initrd_start) | |
111 | ROOT_DEV = Root_RAM0; | |
112 | else | |
113 | #endif | |
114 | #ifdef CONFIG_ROOT_NFS | |
115 | ROOT_DEV = Root_NFS; | |
116 | #else | |
117 | ROOT_DEV = Root_HDA1; | |
118 | #endif | |
119 | } | |
120 | ||
121 | static irqreturn_t cpm2_cascade(int irq, void *dev_id, struct pt_regs *regs) | |
122 | { | |
123 | while ((irq = cpm2_get_irq(regs)) >= 0) | |
124 | __do_IRQ(irq, regs); | |
125 | return IRQ_HANDLED; | |
126 | } | |
127 | ||
128 | static struct irqaction cpm2_irqaction = { | |
129 | .handler = cpm2_cascade, | |
130 | .flags = SA_INTERRUPT, | |
131 | .mask = CPU_MASK_NONE, | |
132 | .name = "cpm2_cascade", | |
133 | }; | |
134 | ||
135 | static void __init | |
136 | mpc8560_ads_init_IRQ(void) | |
137 | { | |
138 | /* Setup OpenPIC */ | |
139 | mpc85xx_ads_init_IRQ(); | |
140 | ||
141 | /* Setup CPM2 PIC */ | |
142 | cpm2_init_IRQ(); | |
143 | ||
144 | setup_irq(MPC85xx_IRQ_CPM, &cpm2_irqaction); | |
145 | ||
146 | return; | |
147 | } | |
148 | ||
149 | ||
150 | ||
151 | /* ************************************************************************ */ | |
152 | void __init | |
153 | platform_init(unsigned long r3, unsigned long r4, unsigned long r5, | |
154 | unsigned long r6, unsigned long r7) | |
155 | { | |
156 | /* parse_bootinfo must always be called first */ | |
157 | parse_bootinfo(find_bootinfo()); | |
158 | ||
159 | /* | |
160 | * If we were passed in a board information, copy it into the | |
161 | * residual data area. | |
162 | */ | |
163 | if (r3) { | |
164 | memcpy((void *) __res, (void *) (r3 + KERNELBASE), | |
165 | sizeof (bd_t)); | |
166 | ||
167 | } | |
168 | #if defined(CONFIG_BLK_DEV_INITRD) | |
169 | /* | |
170 | * If the init RAM disk has been configured in, and there's a valid | |
171 | * starting address for it, set it up. | |
172 | */ | |
173 | if (r4) { | |
174 | initrd_start = r4 + KERNELBASE; | |
175 | initrd_end = r5 + KERNELBASE; | |
176 | } | |
177 | #endif /* CONFIG_BLK_DEV_INITRD */ | |
178 | ||
179 | /* Copy the kernel command line arguments to a safe place. */ | |
180 | ||
181 | if (r6) { | |
182 | *(char *) (r7 + KERNELBASE) = 0; | |
183 | strcpy(cmd_line, (char *) (r6 + KERNELBASE)); | |
184 | } | |
185 | ||
186 | identify_ppc_sys_by_id(mfspr(SPRN_SVR)); | |
187 | ||
188 | /* setup the PowerPC module struct */ | |
189 | ppc_md.setup_arch = mpc8560ads_setup_arch; | |
190 | ppc_md.show_cpuinfo = mpc85xx_ads_show_cpuinfo; | |
191 | ||
192 | ppc_md.init_IRQ = mpc8560_ads_init_IRQ; | |
193 | ppc_md.get_irq = openpic_get_irq; | |
194 | ||
195 | ppc_md.restart = mpc85xx_restart; | |
196 | ppc_md.power_off = mpc85xx_power_off; | |
197 | ppc_md.halt = mpc85xx_halt; | |
198 | ||
199 | ppc_md.find_end_of_memory = mpc85xx_find_end_of_memory; | |
200 | ||
201 | ppc_md.time_init = NULL; | |
202 | ppc_md.set_rtc_time = NULL; | |
203 | ppc_md.get_rtc_time = NULL; | |
204 | ppc_md.calibrate_decr = mpc85xx_calibrate_decr; | |
205 | ||
206 | if (ppc_md.progress) | |
207 | ppc_md.progress("mpc8560ads_init(): exit", 0); | |
208 | ||
209 | return; | |
210 | } |