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