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
|
/*
* (C) Copyright 2000-2003
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* Copyright (C) 2004-2007, 2012 Freescale Semiconductor, Inc.
* Hayden Fraser (Hayden.Fraser@freescale.com)
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/immap.h>
#include <netdev.h>
#include <asm/io.h>
int checkboard(void)
{
puts("Board: ");
puts("Freescale MCF5253 DEMO\n");
return 0;
};
phys_size_t initdram(int board_type)
{
u32 dramsize = 0;
/*
* Check to see if the SDRAM has already been initialized
* by a run control tool
*/
if (!(mbar_readLong(MCFSIM_DCR) & 0x8000)) {
u32 RC, temp;
RC = (CONFIG_SYS_CLK / 1000000) >> 1;
RC = (RC * 15) >> 4;
/* Initialize DRAM Control Register: DCR */
mbar_writeShort(MCFSIM_DCR, (0x8400 | RC));
__asm__("nop");
mbar_writeLong(MCFSIM_DACR0, 0x00003224);
__asm__("nop");
/* Initialize DMR0 */
dramsize = (CONFIG_SYS_SDRAM_SIZE << 20);
temp = (dramsize - 1) & 0xFFFC0000;
mbar_writeLong(MCFSIM_DMR0, temp | 1);
__asm__("nop");
mbar_writeLong(MCFSIM_DACR0, 0x0000322c);
mb();
__asm__("nop");
/* Write to this block to initiate precharge */
*(u32 *) (CONFIG_SYS_SDRAM_BASE) = 0xa5a5a5a5;
mb();
__asm__("nop");
/* Set RE bit in DACR */
mbar_writeLong(MCFSIM_DACR0,
mbar_readLong(MCFSIM_DACR0) | 0x8000);
__asm__("nop");
/* Wait for at least 8 auto refresh cycles to occur */
udelay(500);
/* Finish the configuration by issuing the MRS */
mbar_writeLong(MCFSIM_DACR0,
mbar_readLong(MCFSIM_DACR0) | 0x0040);
__asm__("nop");
*(u32 *) (CONFIG_SYS_SDRAM_BASE + 0x800) = 0xa5a5a5a5;
mb();
}
return dramsize;
}
int testdram(void)
{
/* TODO: XXX XXX XXX */
printf("DRAM test not implemented!\n");
return (0);
}
#ifdef CONFIG_CMD_IDE
#include <ata.h>
int ide_preinit(void)
{
return (0);
}
void ide_set_reset(int idereset)
{
atac_t *ata = (atac_t *) CONFIG_SYS_ATA_BASE_ADDR;
long period;
/* t1, t2, t3, t4, t5, t6, t9, tRD, tA */
int piotms[5][9] = { {70, 165, 60, 30, 50, 5, 20, 0, 35}, /* PIO 0 */
{50, 125, 45, 20, 35, 5, 15, 0, 35}, /* PIO 1 */
{30, 100, 30, 15, 20, 5, 10, 0, 35}, /* PIO 2 */
{30, 80, 30, 10, 20, 5, 10, 0, 35}, /* PIO 3 */
{25, 70, 20, 10, 20, 5, 10, 0, 35} /* PIO 4 */
};
if (idereset) {
/* control reset */
out_8(&ata->cr, 0);
udelay(100);
} else {
mbar2_writeLong(CIM_MISCCR, CIM_MISCCR_CPUEND);
#define CALC_TIMING(t) (t + period - 1) / period
period = 1000000000 / (CONFIG_SYS_CLK / 2); /* period in ns */
/*ata->ton = CALC_TIMING (180); */
out_8(&ata->t1, CALC_TIMING(piotms[2][0]));
out_8(&ata->t2w, CALC_TIMING(piotms[2][1]));
out_8(&ata->t2r, CALC_TIMING(piotms[2][1]));
out_8(&ata->ta, CALC_TIMING(piotms[2][8]));
out_8(&ata->trd, CALC_TIMING(piotms[2][7]));
out_8(&ata->t4, CALC_TIMING(piotms[2][3]));
out_8(&ata->t9, CALC_TIMING(piotms[2][6]));
/* IORDY enable */
out_8(&ata->cr, 0x40);
udelay(2000);
/* IORDY enable */
setbits_8(&ata->cr, 0x01);
}
}
#endif /* CONFIG_CMD_IDE */
#ifdef CONFIG_DRIVER_DM9000
int board_eth_init(bd_t *bis)
{
return dm9000_initialize(bis);
}
#endif
|
