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
|
#include <bootsource.h>
#include <bootstrap.h>
#include <common.h>
#include <malloc.h>
#include <init.h>
#include <envfs.h>
#include <linux/sizes.h>
#include <fs.h>
#include <io.h>
#include <linux/clkdev.h>
#include <linux/stat.h>
#include <linux/clk.h>
#include <mach/generic.h>
#include <mach/cyclone5-system-manager.h>
#include <mach/cyclone5-regs.h>
static struct socfpga_barebox_part default_parts[] = {
{
.nor_offset = SZ_256K,
.nor_size = SZ_1M,
.mmc_disk = "disk0.1",
},
{ /* sentinel */ }
};
const struct socfpga_barebox_part *barebox_parts = default_parts;
static __noreturn int socfpga_xload(void)
{
enum bootsource bootsource = bootsource_get();
const struct socfpga_barebox_part *part;
void *buf = NULL;
switch (bootsource) {
case BOOTSOURCE_MMC:
socfpga_cyclone5_mmc_init();
for (part = barebox_parts; part->mmc_disk; part++) {
buf = bootstrap_read_disk(barebox_parts->mmc_disk, "fat");
if (!buf) {
pr_info("failed to load barebox from MMC %s\n",
part->mmc_disk);
continue;
}
}
if (!buf) {
pr_err("failed to load barebox.bin from MMC\n");
hang();
}
break;
case BOOTSOURCE_SPI:
socfpga_cyclone5_qspi_init();
for (part = barebox_parts; part->nor_size; part++) {
buf = bootstrap_read_devfs("mtd0", false,
part->nor_offset, part->nor_size, SZ_1M);
if (!buf) {
pr_info("failed to load barebox from QSPI NOR flash at offset %#x\n",
part->nor_offset);
continue;
}
break;
}
if (!buf) {
pr_err("failed to load barebox from QSPI NOR flash\n");
hang();
}
break;
default:
pr_err("unknown bootsource %d\n", bootsource);
hang();
}
pr_info("starting bootloader...\n");
bootstrap_boot(buf, 0);
hang();
}
static int socfpga_devices_init(void)
{
barebox_set_model("SoCFPGA");
socfpga_cyclone5_timer_init();
socfpga_cyclone5_uart_init();
barebox_main = socfpga_xload;
return 0;
}
coredevice_initcall(socfpga_devices_init);
|
