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
|
/*
* Copyright (c) 2016 Google, Inc
*
* SPDX-License-Identifier: GPL-2.0
*/
#include <common.h>
#include <debug_uart.h>
#include <spl.h>
#include <asm/cpu.h>
#include <asm/init_helpers.h>
#include <asm/mtrr.h>
#include <asm/processor.h>
#include <asm-generic/sections.h>
DECLARE_GLOBAL_DATA_PTR;
static int x86_spl_init(void)
{
/*
* TODO(sjg@chromium.org): We use this area of RAM for the stack
* and global_data in SPL. Once U-Boot starts up and releocates it
* is not needed. We could make this a CONFIG option or perhaps
* place it immediately below CONFIG_SYS_TEXT_BASE.
*/
char *ptr = (char *)0x110000;
int ret;
debug("%s starting\n", __func__);
ret = spl_init();
if (ret) {
debug("%s: spl_init() failed\n", __func__);
return ret;
}
preloader_console_init();
ret = arch_cpu_init();
if (ret) {
debug("%s: arch_cpu_init() failed\n", __func__);
return ret;
}
ret = arch_cpu_init_dm();
if (ret) {
debug("%s: arch_cpu_init_dm() failed\n", __func__);
return ret;
}
ret = print_cpuinfo();
if (ret) {
debug("%s: print_cpuinfo() failed\n", __func__);
return ret;
}
ret = dram_init();
if (ret) {
debug("%s: dram_init() failed\n", __func__);
return ret;
}
memset(&__bss_start, 0, (ulong)&__bss_end - (ulong)&__bss_start);
/* TODO(sjg@chromium.org): Consider calling cpu_init_r() here */
ret = interrupt_init();
if (ret) {
debug("%s: interrupt_init() failed\n", __func__);
return ret;
}
/*
* The stack grows down from ptr. Put the global data at ptr. This
* will only be used for SPL. Once SPL loads U-Boot proper it will
* set up its own stack.
*/
gd->new_gd = (struct global_data *)ptr;
memcpy(gd->new_gd, gd, sizeof(*gd));
arch_setup_gd(gd->new_gd);
gd->start_addr_sp = (ulong)ptr;
/* Cache the SPI flash. Otherwise copying the code to RAM takes ages */
ret = mtrr_add_request(MTRR_TYPE_WRBACK,
(1ULL << 32) - CONFIG_XIP_ROM_SIZE,
CONFIG_XIP_ROM_SIZE);
if (ret) {
debug("%s: SPI cache setup failed\n", __func__);
return ret;
}
return 0;
}
void board_init_f(ulong flags)
{
int ret;
ret = x86_spl_init();
if (ret) {
debug("Error %d\n", ret);
hang();
}
/* Uninit CAR and jump to board_init_f_r() */
board_init_f_r_trampoline(gd->start_addr_sp);
}
void board_init_f_r(void)
{
init_cache_f_r();
gd->flags &= ~GD_FLG_SERIAL_READY;
debug("cache status %d\n", dcache_status());
board_init_r(gd, 0);
}
u32 spl_boot_device(void)
{
return BOOT_DEVICE_BOARD;
}
int spl_start_uboot(void)
{
return 0;
}
void spl_board_announce_boot_device(void)
{
printf("SPI flash");
}
static int spl_board_load_image(struct spl_image_info *spl_image,
struct spl_boot_device *bootdev)
{
spl_image->size = CONFIG_SYS_MONITOR_LEN;
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";
debug("Loading to %lx\n", spl_image->load_addr);
return 0;
}
SPL_LOAD_IMAGE_METHOD("SPI", 0, BOOT_DEVICE_BOARD, spl_board_load_image);
int spl_spi_load_image(void)
{
return -EPERM;
}
void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
{
int ret;
printf("Jumping to 64-bit U-Boot: Note many features are missing\n");
ret = cpu_jump_to_64bit_uboot(spl_image->entry_point);
debug("ret=%d\n", ret);
while (1)
;
}
|
