summaryrefslogtreecommitdiff
path: root/board/armltd/vexpress/ca9x4_ct_vxp.c
blob: d5e109ec067bcb896cce9420073c47b9130246aa (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
/*
 * (C) Copyright 2002
 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
 * Marius Groeger <mgroeger@sysgo.de>
 *
 * (C) Copyright 2002
 * David Mueller, ELSOFT AG, <d.mueller@elsoft.ch>
 *
 * (C) Copyright 2003
 * Texas Instruments, <www.ti.com>
 * Kshitij Gupta <Kshitij@ti.com>
 *
 * (C) Copyright 2004
 * ARM Ltd.
 * Philippe Robin, <philippe.robin@arm.com>
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */
#include <common.h>
#include <malloc.h>
#include <errno.h>
#include <netdev.h>
#include <asm/io.h>
#include <asm/arch/systimer.h>
#include <asm/arch/sysctrl.h>
#include <asm/arch/wdt.h>
#include "../drivers/mmc/arm_pl180_mmci.h"

static ulong timestamp;
static ulong lastdec;

static struct wdt *wdt_base = (struct wdt *)WDT_BASE;
static struct systimer *systimer_base = (struct systimer *)SYSTIMER_BASE;
static struct sysctrl *sysctrl_base = (struct sysctrl *)SCTL_BASE;

static void flash__init(void);
static void vexpress_timer_init(void);
DECLARE_GLOBAL_DATA_PTR;

#if defined(CONFIG_SHOW_BOOT_PROGRESS)
void show_boot_progress(int progress)
{
	printf("Boot reached stage %d\n", progress);
}
#endif

static inline void delay(ulong loops)
{
	__asm__ volatile ("1:\n"
		"subs %0, %1, #1\n"
		"bne 1b" : "=r" (loops) : "0" (loops));
}

int board_init(void)
{
	gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;
	gd->bd->bi_arch_number = MACH_TYPE_VEXPRESS;
	gd->flags = 0;

	icache_enable();
	flash__init();
	vexpress_timer_init();

	return 0;
}

int board_eth_init(bd_t *bis)
{
	int rc = 0;
#ifdef CONFIG_SMC911X
	rc = smc911x_initialize(0, CONFIG_SMC911X_BASE);
#endif
	return rc;
}

int cpu_mmc_init(bd_t *bis)
{
	int rc = 0;
	(void) bis;
#ifdef CONFIG_ARM_PL180_MMCI
	struct pl180_mmc_host *host;

	host = malloc(sizeof(struct pl180_mmc_host));
	if (!host)
		return -ENOMEM;
	memset(host, 0, sizeof(*host));

	strcpy(host->name, "MMC");
	host->base = (struct sdi_registers *)CONFIG_ARM_PL180_MMCI_BASE;
	host->pwr_init = INIT_PWR;
	host->clkdiv_init = SDI_CLKCR_CLKDIV_INIT_V1 | SDI_CLKCR_CLKEN;
	host->voltages = VOLTAGE_WINDOW_MMC;
	host->caps = 0;
	host->clock_in = ARM_MCLK;
	host->clock_min = ARM_MCLK / (2 * (SDI_CLKCR_CLKDIV_INIT_V1 + 1));
	host->clock_max = CONFIG_ARM_PL180_MMCI_CLOCK_FREQ;
	rc = arm_pl180_mmci_init(host);
#endif
	return rc;
}

static void flash__init(void)
{
	/* Setup the sytem control register to allow writing to flash */
	writel(readl(&sysctrl_base->scflashctrl) | VEXPRESS_FLASHPROG_FLVPPEN,
	       &sysctrl_base->scflashctrl);
}

int dram_init(void)
{
	gd->ram_size =
		get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, PHYS_SDRAM_1_SIZE);
	return 0;
}

void dram_init_banksize(void)
{
	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
	gd->bd->bi_dram[0].size =
			get_ram_size((long *)PHYS_SDRAM_1, PHYS_SDRAM_1_SIZE);
	gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
	gd->bd->bi_dram[1].size =
			get_ram_size((long *)PHYS_SDRAM_2, PHYS_SDRAM_2_SIZE);
}

int timer_init(void)
{
	return 0;
}

/*
 * Start timer:
 *    Setup a 32 bit timer, running at 1KHz
 *    Versatile Express Motherboard provides 1 MHz timer
 */
static void vexpress_timer_init(void)
{
	/*
	 * Set clock frequency in system controller:
	 *   VEXPRESS_REFCLK is 32KHz
	 *   VEXPRESS_TIMCLK is 1MHz
	 */
	writel(SP810_TIMER0_ENSEL | SP810_TIMER1_ENSEL |
	       SP810_TIMER2_ENSEL | SP810_TIMER3_ENSEL |
	       readl(&sysctrl_base->scctrl), &sysctrl_base->scctrl);

	/*
	 * Set Timer0 to be:
	 *   Enabled, free running, no interrupt, 32-bit, wrapping
	 */
	writel(SYSTIMER_RELOAD, &systimer_base->timer0load);
	writel(SYSTIMER_RELOAD, &systimer_base->timer0value);
	writel(SYSTIMER_EN | SYSTIMER_32BIT | \
	       readl(&systimer_base->timer0control), \
	       &systimer_base->timer0control);

	reset_timer_masked();
}

/* Use the ARM Watchdog System to cause reset */
void reset_cpu(ulong addr)
{
	writeb(WDT_EN, &wdt_base->wdogcontrol);
	writel(WDT_RESET_LOAD, &wdt_base->wdogload);
	while (1)
		;
}

/*
 * Delay x useconds AND perserve advance timstamp value
 *     assumes timer is ticking at 1 msec
 */
void __udelay(ulong usec)
{
	ulong tmo, tmp;

	tmo = usec / 1000;
	tmp = get_timer(0);	/* get current timestamp */

	/*
	 * If setting this forward will roll time stamp	then
	 * reset "advancing" timestamp to 0 and set lastdec value
	 * otherwise set the advancing stamp to the wake up time
	 */
	if ((tmo + tmp + 1) < tmp)
		reset_timer_masked();
	else
		tmo += tmp;

	while (get_timer_masked() < tmo)
		; /* loop till wakeup event */
}

ulong get_timer(ulong base)
{
	return get_timer_masked() - base;
}

void reset_timer_masked(void)
{
	lastdec = readl(&systimer_base->timer0value) / 1000;
	timestamp = 0;
}

ulong get_timer_masked(void)
{
	ulong now = readl(&systimer_base->timer0value) / 1000;

	if (lastdec >= now) {	/* normal mode (non roll) */
		timestamp += lastdec - now;
	} else {		/* count down timer overflowed */
		/*
		 * nts = ts + ld - now
		 * ts = old stamp, ld = time before passing through - 1
		 * now = amount of time after passing though - 1
		 * nts = new "advancing time stamp"
		 */
		timestamp += lastdec + SYSTIMER_RELOAD - now;
	}
	lastdec = now;

	return timestamp;
}

void lowlevel_init(void)
{
}

ulong get_board_rev(void){
	return readl((u32 *)SYS_ID);
}

unsigned long long get_ticks(void)
{
	return get_timer(0);
}

ulong get_tbclk (void)
{
	return (ulong)CONFIG_SYS_HZ;
}