aboutsummaryrefslogtreecommitdiff
path: root/arch/ppc/platforms/85xx/mpc8560_ads.c
blob: 8e39a551709292fd8935d88a9c8591110cb42068 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
/*
 * arch/ppc/platforms/85xx/mpc8560_ads.c
 *
 * MPC8560ADS board specific routines
 *
 * Maintainer: Kumar Gala <galak@kernel.crashing.org>
 *
 * Copyright 2004 Freescale Semiconductor Inc.
 *
 * This program is free software; you can redistribute  it and/or modify it
 * under  the terms of  the GNU General  Public License as published by the
 * Free Software Foundation;  either version 2 of the  License, or (at your
 * option) any later version.
 */

#include <linux/config.h>
#include <linux/stddef.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/reboot.h>
#include <linux/pci.h>
#include <linux/kdev_t.h>
#include <linux/major.h>
#include <linux/console.h>
#include <linux/delay.h>
#include <linux/seq_file.h>
#include <linux/root_dev.h>
#include <linux/serial.h>
#include <linux/tty.h>	/* for linux/serial_core.h */
#include <linux/serial_core.h>
#include <linux/initrd.h>
#include <linux/module.h>
#include <linux/fsl_devices.h>

#include <asm/system.h>
#include <asm/pgtable.h>
#include <asm/page.h>
#include <asm/atomic.h>
#include <asm/time.h>
#include <asm/io.h>
#include <asm/machdep.h>
#include <asm/open_pic.h>
#include <asm/bootinfo.h>
#include <asm/pci-bridge.h>
#include <asm/mpc85xx.h>
#include <asm/irq.h>
#include <asm/immap_85xx.h>
#include <asm/kgdb.h>
#include <asm/ppc_sys.h>
#include <asm/cpm2.h>
#include <mm/mmu_decl.h>

#include <syslib/cpm2_pic.h>
#include <syslib/ppc85xx_common.h>
#include <syslib/ppc85xx_setup.h>


static const char *GFAR_PHY_0 = "phy0:0";
static const char *GFAR_PHY_1 = "phy0:1";
static const char *GFAR_PHY_3 = "phy0:3";

/* ************************************************************************
 *
 * Setup the architecture
 *
 */

static void __init
mpc8560ads_setup_arch(void)
{
	bd_t *binfo = (bd_t *) __res;
	unsigned int freq;
	struct gianfar_platform_data *pdata;
	struct gianfar_mdio_data *mdata;

	cpm2_reset();

	/* get the core frequency */
	freq = binfo->bi_intfreq;

	if (ppc_md.progress)
		ppc_md.progress("mpc8560ads_setup_arch()", 0);

	/* Set loops_per_jiffy to a half-way reasonable value,
	   for use until calibrate_delay gets called. */
	loops_per_jiffy = freq / HZ;

#ifdef CONFIG_PCI
	/* setup PCI host bridges */
	mpc85xx_setup_hose();
#endif

	/* setup the board related info for the MDIO bus */
	mdata = (struct gianfar_mdio_data *) ppc_sys_get_pdata(MPC85xx_MDIO);

	mdata->irq[0] = MPC85xx_IRQ_EXT5;
	mdata->irq[1] = MPC85xx_IRQ_EXT5;
	mdata->irq[2] = -1;
	mdata->irq[3] = MPC85xx_IRQ_EXT5;
	mdata->irq[31] = -1;
	mdata->paddr += binfo->bi_immr_base;

	/* setup the board related information for the enet controllers */
	pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC1);
	if (pdata) {
		pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR;
		pdata->bus_id = GFAR_PHY_0;
		memcpy(pdata->mac_addr, binfo->bi_enetaddr, 6);
	}

	pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC2);
	if (pdata) {
		pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR;
		pdata->bus_id = GFAR_PHY_1;
		memcpy(pdata->mac_addr, binfo->bi_enet1addr, 6);
	}

#ifdef CONFIG_BLK_DEV_INITRD
	if (initrd_start)
		ROOT_DEV = Root_RAM0;
	else
#endif
#ifdef  CONFIG_ROOT_NFS
		ROOT_DEV = Root_NFS;
#else
		ROOT_DEV = Root_HDA1;
#endif
}

static irqreturn_t cpm2_cascade(int irq, void *dev_id, struct pt_regs *regs)
{
	while ((irq = cpm2_get_irq(regs)) >= 0)
		__do_IRQ(irq, regs);
	return IRQ_HANDLED;
}

static struct irqaction cpm2_irqaction = {
	.handler = cpm2_cascade,
	.flags = SA_INTERRUPT,
	.mask = CPU_MASK_NONE,
	.name = "cpm2_cascade",
};

static void __init
mpc8560_ads_init_IRQ(void)
{
	/* Setup OpenPIC */
	mpc85xx_ads_init_IRQ();

	/* Setup CPM2 PIC */
        cpm2_init_IRQ();

	setup_irq(MPC85xx_IRQ_CPM, &cpm2_irqaction);

	return;
}



/* ************************************************************************ */
void __init
platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
	      unsigned long r6, unsigned long r7)
{
	/* parse_bootinfo must always be called first */
	parse_bootinfo(find_bootinfo());

	/*
	 * If we were passed in a board information, copy it into the
	 * residual data area.
	 */
	if (r3) {
		memcpy((void *) __res, (void *) (r3 + KERNELBASE),
		       sizeof (bd_t));

	}
#if defined(CONFIG_BLK_DEV_INITRD)
	/*
	 * If the init RAM disk has been configured in, and there's a valid
	 * starting address for it, set it up.
	 */
	if (r4) {
		initrd_start = r4 + KERNELBASE;
		initrd_end = r5 + KERNELBASE;
	}
#endif				/* CONFIG_BLK_DEV_INITRD */

	/* Copy the kernel command line arguments to a safe place. */

	if (r6) {
		*(char *) (r7 + KERNELBASE) = 0;
		strcpy(cmd_line, (char *) (r6 + KERNELBASE));
	}

	identify_ppc_sys_by_id(mfspr(SPRN_SVR));

	/* setup the PowerPC module struct */
	ppc_md.setup_arch = mpc8560ads_setup_arch;
	ppc_md.show_cpuinfo = mpc85xx_ads_show_cpuinfo;

	ppc_md.init_IRQ = mpc8560_ads_init_IRQ;
	ppc_md.get_irq = openpic_get_irq;

	ppc_md.restart = mpc85xx_restart;
	ppc_md.power_off = mpc85xx_power_off;
	ppc_md.halt = mpc85xx_halt;

	ppc_md.find_end_of_memory = mpc85xx_find_end_of_memory;

	ppc_md.time_init = NULL;
	ppc_md.set_rtc_time = NULL;
	ppc_md.get_rtc_time = NULL;
	ppc_md.calibrate_decr = mpc85xx_calibrate_decr;

	if (ppc_md.progress)
		ppc_md.progress("mpc8560ads_init(): exit", 0);

	return;
}