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
|
/*
* (C) Copyright 2010
* Texas Instruments, <www.ti.com>
*
* Aneesh V <aneesh@ti.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 <asm/u-boot.h>
#include <asm/utils.h>
#include <asm/arch/sys_proto.h>
#include <nand.h>
#include <mmc.h>
#include <fat.h>
#include <version.h>
#include <asm/omap_common.h>
#include <asm/arch/mmc_host_def.h>
#include <i2c.h>
#include <image.h>
#include <malloc.h>
#include <linux/compiler.h>
DECLARE_GLOBAL_DATA_PTR;
u32* boot_params_ptr = NULL;
struct spl_image_info spl_image;
/* Define global data structure pointer to it*/
static gd_t gdata __attribute__ ((section(".data")));
static bd_t bdata __attribute__ ((section(".data")));
inline void hang(void)
{
puts("### ERROR ### Please RESET the board ###\n");
for (;;)
;
}
void board_init_f(ulong dummy)
{
/*
* We call relocate_code() with relocation target same as the
* CONFIG_SYS_SPL_TEXT_BASE. This will result in relocation getting
* skipped. Instead, only .bss initialization will happen. That's
* all we need
*/
debug(">>board_init_f()\n");
relocate_code(CONFIG_SPL_STACK, &gdata, CONFIG_SPL_TEXT_BASE);
}
void spl_parse_image_header(const struct image_header *header)
{
u32 header_size = sizeof(struct image_header);
if (__be32_to_cpu(header->ih_magic) == IH_MAGIC) {
spl_image.size = __be32_to_cpu(header->ih_size) + header_size;
spl_image.entry_point = __be32_to_cpu(header->ih_load);
/* Load including the header */
spl_image.load_addr = spl_image.entry_point - header_size;
spl_image.os = header->ih_os;
spl_image.name = (const char *)&header->ih_name;
debug("spl: payload image: %s load addr: 0x%x size: %d\n",
spl_image.name, spl_image.load_addr, spl_image.size);
} else {
/* Signature not found - assume u-boot.bin */
printf("mkimage signature not found - ih_magic = %x\n",
header->ih_magic);
puts("Assuming u-boot.bin ..\n");
/* Let's assume U-Boot will not be more than 200 KB */
spl_image.size = 200 * 1024;
spl_image.entry_point = CONFIG_SYS_TEXT_BASE;
spl_image.load_addr = CONFIG_SYS_TEXT_BASE;
spl_image.os = IH_OS_U_BOOT;
spl_image.name = "U-Boot";
}
}
static void __noreturn jump_to_image_no_args(void)
{
typedef void __noreturn (*image_entry_noargs_t)(u32 *);
image_entry_noargs_t image_entry =
(image_entry_noargs_t) spl_image.entry_point;
debug("image entry point: 0x%X\n", spl_image.entry_point);
/* Pass the saved boot_params from rom code */
#if defined(CONFIG_VIRTIO) || defined(CONFIG_ZEBU)
image_entry = (image_entry_noargs_t)0x80100000;
#endif
u32 boot_params_ptr_addr = (u32)&boot_params_ptr;
image_entry((u32 *)boot_params_ptr_addr);
}
void board_init_r(gd_t *id, ulong dummy)
{
u32 boot_device;
debug(">>spl:board_init_r()\n");
mem_malloc_init(CONFIG_SYS_SPL_MALLOC_START,
CONFIG_SYS_SPL_MALLOC_SIZE);
#ifdef CONFIG_SPL_BOARD_INIT
spl_board_init();
#endif
boot_device = omap_boot_device();
debug("boot device - %d\n", boot_device);
switch (boot_device) {
#ifdef CONFIG_SPL_MMC_SUPPORT
case BOOT_DEVICE_MMC1:
case BOOT_DEVICE_MMC2:
spl_mmc_load_image();
break;
#endif
#ifdef CONFIG_SPL_NAND_SUPPORT
case BOOT_DEVICE_NAND:
spl_nand_load_image();
break;
#endif
default:
printf("SPL: Un-supported Boot Device - %d!!!\n", boot_device);
hang();
break;
}
switch (spl_image.os) {
case IH_OS_U_BOOT:
debug("Jumping to U-Boot\n");
jump_to_image_no_args();
break;
default:
puts("Unsupported OS image.. Jumping nevertheless..\n");
jump_to_image_no_args();
}
}
/* This requires UART clocks to be enabled */
void preloader_console_init(void)
{
const char *u_boot_rev = U_BOOT_VERSION;
gd = &gdata;
gd->bd = &bdata;
gd->flags |= GD_FLG_RELOC;
gd->baudrate = CONFIG_BAUDRATE;
serial_init(); /* serial communications setup */
gd->have_console = 1;
/* Avoid a second "U-Boot" coming from this string */
u_boot_rev = &u_boot_rev[7];
printf("\nU-Boot SPL %s (%s - %s)\n", u_boot_rev, U_BOOT_DATE,
U_BOOT_TIME);
omap_rev_string();
}
void __weak omap_rev_string()
{
printf("Texas Instruments Revision detection unimplemented\n");
}
|