aboutsummaryrefslogtreecommitdiff
path: root/arch/powerpc/platforms/8xx/mpc86xads_setup.c
blob: 8f64f48698aba7c559551bcc1444a2b3227cb806 (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
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
/*arch/powerpc/platforms/8xx/mpc86xads_setup.c
 *
 * Platform setup for the Freescale mpc86xads board
 *
 * Vitaly Bordug <vbordug@ru.mvista.com>
 *
 * Copyright 2005 MontaVista Software Inc.
 *
 * This file is licensed under the terms of the GNU General Public License
 * version 2. This program is licensed "as is" without any warranty of any
 * kind, whether express or implied.
 */

#include <linux/init.h>
#include <linux/module.h>
#include <linux/param.h>
#include <linux/string.h>
#include <linux/ioport.h>
#include <linux/device.h>
#include <linux/delay.h>
#include <linux/root_dev.h>

#include <linux/fs_enet_pd.h>
#include <linux/fs_uart_pd.h>
#include <linux/mii.h>

#include <asm/delay.h>
#include <asm/io.h>
#include <asm/machdep.h>
#include <asm/page.h>
#include <asm/processor.h>
#include <asm/system.h>
#include <asm/time.h>
#include <asm/mpc8xx.h>
#include <asm/8xx_immap.h>
#include <asm/commproc.h>
#include <asm/fs_pd.h>
#include <asm/prom.h>

extern void cpm_reset(void);
extern void mpc8xx_show_cpuinfo(struct seq_file*);
extern void mpc8xx_restart(char *cmd);
extern void mpc8xx_calibrate_decr(void);
extern int mpc8xx_set_rtc_time(struct rtc_time *tm);
extern void mpc8xx_get_rtc_time(struct rtc_time *tm);
extern void m8xx_pic_init(void);
extern unsigned int mpc8xx_get_irq(void);

static void init_smc1_uart_ioports(struct fs_uart_platform_info* fpi);
static void init_smc2_uart_ioports(struct fs_uart_platform_info* fpi);
static void init_scc1_ioports(struct fs_platform_info* ptr);

void __init mpc86xads_board_setup(void)
{
	cpm8xx_t *cp;
 	unsigned int *bcsr_io;
	u8 tmpval8;

	bcsr_io = ioremap(BCSR1, sizeof(unsigned long));
	cp = (cpm8xx_t *)immr_map(im_cpm);

	if (bcsr_io == NULL) {
		printk(KERN_CRIT "Could not remap BCSR\n");
		return;
	}
#ifdef CONFIG_SERIAL_CPM_SMC1
	clrbits32(bcsr_io, BCSR1_RS232EN_1);
	clrbits32(&cp->cp_simode, 0xe0000000 >> 17);	/* brg1 */
	tmpval8 = in_8(&(cp->cp_smc[0].smc_smcm)) | (SMCM_RX | SMCM_TX);
	out_8(&(cp->cp_smc[0].smc_smcm), tmpval8);
	clrbits16(&cp->cp_smc[0].smc_smcmr, SMCMR_REN | SMCMR_TEN);
#else
	setbits32(bcsr_io,BCSR1_RS232EN_1);
	out_be16(&cp->cp_smc[0].smc_smcmr, 0);
	out_8(&cp->cp_smc[0].smc_smce, 0);
#endif

#ifdef CONFIG_SERIAL_CPM_SMC2
	clrbits32(bcsr_io,BCSR1_RS232EN_2);
	clrbits32(&cp->cp_simode, 0xe0000000 >> 1);
	setbits32(&cp->cp_simode, 0x20000000 >> 1);	/* brg2 */
	tmpval8 = in_8(&(cp->cp_smc[1].smc_smcm)) | (SMCM_RX | SMCM_TX);
	out_8(&(cp->cp_smc[1].smc_smcm), tmpval8);
	clrbits16(&cp->cp_smc[1].smc_smcmr, SMCMR_REN | SMCMR_TEN);

	init_smc2_uart_ioports(0);
#else
	setbits32(bcsr_io,BCSR1_RS232EN_2);
	out_be16(&cp->cp_smc[1].smc_smcmr, 0);
	out_8(&cp->cp_smc[1].smc_smce, 0);
#endif
	immr_unmap(cp);
	iounmap(bcsr_io);
}


static void init_fec1_ioports(struct fs_platform_info* ptr)
{
	iop8xx_t *io_port = (iop8xx_t *)immr_map(im_ioport);

	/* configure FEC1 pins  */

	setbits16(&io_port->iop_pdpar, 0x1fff);
	setbits16(&io_port->iop_pddir, 0x1fff);

	immr_unmap(io_port);
}

void init_fec_ioports(struct fs_platform_info *fpi)
{
	int fec_no = fs_get_fec_index(fpi->fs_no);

	switch (fec_no) {
	case 0:
		init_fec1_ioports(fpi);
		break;
	default:
		printk(KERN_ERR "init_fec_ioports: invalid FEC number\n");
		return;
	}
}

static void init_scc1_ioports(struct fs_platform_info* fpi)
{
	unsigned *bcsr_io;
	iop8xx_t *io_port;
	cpm8xx_t *cp;

	bcsr_io = ioremap(BCSR_ADDR, BCSR_SIZE);
	io_port = (iop8xx_t *)immr_map(im_ioport);
	cp = (cpm8xx_t *)immr_map(im_cpm);

	if (bcsr_io == NULL) {
		printk(KERN_CRIT "Could not remap BCSR\n");
		return;
	}

	/* Configure port A pins for Txd and Rxd.
	 */
	setbits16(&io_port->iop_papar, PA_ENET_RXD | PA_ENET_TXD);
	clrbits16(&io_port->iop_padir, PA_ENET_RXD | PA_ENET_TXD);
	clrbits16(&io_port->iop_paodr, PA_ENET_TXD);

	/* Configure port C pins to enable CLSN and RENA.
	 */
	clrbits16(&io_port->iop_pcpar, PC_ENET_CLSN | PC_ENET_RENA);
	clrbits16(&io_port->iop_pcdir, PC_ENET_CLSN | PC_ENET_RENA);
	setbits16(&io_port->iop_pcso, PC_ENET_CLSN | PC_ENET_RENA);

	/* Configure port A for TCLK and RCLK.
	 */
	setbits16(&io_port->iop_papar, PA_ENET_TCLK | PA_ENET_RCLK);
        clrbits16(&io_port->iop_padir, PA_ENET_TCLK | PA_ENET_RCLK);
        clrbits32(&cp->cp_pbpar, PB_ENET_TENA);
        clrbits32(&cp->cp_pbdir, PB_ENET_TENA);

	/* Configure Serial Interface clock routing.
	 * First, clear all SCC bits to zero, then set the ones we want.
	 */
	clrbits32(&cp->cp_sicr, SICR_ENET_MASK);
	setbits32(&cp->cp_sicr, SICR_ENET_CLKRT);

	/* In the original SCC enet driver the following code is placed at
	   the end of the initialization */
        setbits32(&cp->cp_pbpar, PB_ENET_TENA);
        setbits32(&cp->cp_pbdir, PB_ENET_TENA);

	clrbits32(bcsr_io+1, BCSR1_ETHEN);
	iounmap(bcsr_io);
	immr_unmap(cp);
	immr_unmap(io_port);
}

void init_scc_ioports(struct fs_platform_info *fpi)
{
	int scc_no = fs_get_scc_index(fpi->fs_no);

	switch (scc_no) {
	case 0:
		init_scc1_ioports(fpi);
		break;
	default:
		printk(KERN_ERR "init_scc_ioports: invalid SCC number\n");
		return;
	}
}



static void init_smc1_uart_ioports(struct fs_uart_platform_info* ptr)
{
        unsigned *bcsr_io;
	cpm8xx_t *cp = (cpm8xx_t *)immr_map(im_cpm);

	setbits32(&cp->cp_pbpar, 0x000000c0);
	clrbits32(&cp->cp_pbdir, 0x000000c0);
	clrbits16(&cp->cp_pbodr, 0x00c0);
	immr_unmap(cp);

        bcsr_io = ioremap(BCSR1, sizeof(unsigned long));

        if (bcsr_io == NULL) {
                printk(KERN_CRIT "Could not remap BCSR1\n");
                return;
        }
        clrbits32(bcsr_io,BCSR1_RS232EN_1);
        iounmap(bcsr_io);
}

static void init_smc2_uart_ioports(struct fs_uart_platform_info* fpi)
{
        unsigned *bcsr_io;
	cpm8xx_t *cp = (cpm8xx_t *)immr_map(im_cpm);

	setbits32(&cp->cp_pbpar, 0x00000c00);
	clrbits32(&cp->cp_pbdir, 0x00000c00);
	clrbits16(&cp->cp_pbodr, 0x0c00);
	immr_unmap(cp);

        bcsr_io = ioremap(BCSR1, sizeof(unsigned long));

        if (bcsr_io == NULL) {
                printk(KERN_CRIT "Could not remap BCSR1\n");
                return;
        }
        clrbits32(bcsr_io,BCSR1_RS232EN_2);
        iounmap(bcsr_io);
}

void init_smc_ioports(struct fs_uart_platform_info *data)
{
	int smc_no = fs_uart_id_fsid2smc(data->fs_no);

	switch (smc_no) {
	case 0:
		init_smc1_uart_ioports(data);
		data->brg = data->clk_rx;
		break;
	case 1:
		init_smc2_uart_ioports(data);
		data->brg = data->clk_rx;
		break;
	default:
		printk(KERN_ERR "init_scc_ioports: invalid SCC number\n");
		return;
	}
}

int platform_device_skip(const char *model, int id)
{
	return 0;
}

static void __init mpc86xads_setup_arch(void)
{
	cpm_reset();

	mpc86xads_board_setup();

	ROOT_DEV = Root_NFS;
}

static int __init mpc86xads_probe(void)
{
	char *model = of_get_flat_dt_prop(of_get_flat_dt_root(),
					  "model", NULL);
	if (model == NULL)
		return 0;
	if (strcmp(model, "MPC866ADS"))
		return 0;

	return 1;
}

define_machine(mpc86x_ads) {
	.name			= "MPC86x ADS",
	.probe			= mpc86xads_probe,
	.setup_arch		= mpc86xads_setup_arch,
	.init_IRQ		= m8xx_pic_init,
	.show_cpuinfo		= mpc8xx_show_cpuinfo,
	.get_irq		= mpc8xx_get_irq,
	.restart		= mpc8xx_restart,
	.calibrate_decr		= mpc8xx_calibrate_decr,
	.set_rtc_time		= mpc8xx_set_rtc_time,
	.get_rtc_time		= mpc8xx_get_rtc_time,
};