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
258
259
260
261
262
263
264
265
266
267
268
269
270
271
|
#define ASSEMBLY 1
#define __ROMCC__
#include <stdint.h>
#include <device/pci_def.h>
#include <arch/io.h>
#include <device/pnp_def.h>
#include <arch/romcc_io.h>
#include <cpu/x86/lapic.h>
#include "option_table.h"
#include "pc80/mc146818rtc_early.c"
#include "pc80/serial.c"
#include "arch/i386/lib/console.c"
#include "ram/ramtest.c"
#if 0
static void post_code(uint8_t value) {
#if 1
int i;
for(i=0;i<0x80000;i++) {
outb(value, 0x80);
}
#endif
}
#endif
#include "southbridge/intel/i82801er/i82801er_early_smbus.c"
#include "northbridge/intel/e7501/raminit.h"
#if CONFIG_USE_INIT == 0
#include "lib/memcpy.c"
#endif
#include "cpu/x86/lapic/boot_cpu.c"
#include "northbridge/intel/e7501/debug.c"
#include "superio/winbond/w83627hf/w83627hf_early_serial.c"
#include "cpu/x86/mtrr/earlymtrr.c"
#include "cpu/x86/bist.h"
#define SERIAL_DEV PNP_DEV(0x2e, W83627HF_SP1)
static void hard_reset(void)
{
/* full reset */
outb(0x0a, 0x0cf9);
outb(0x0e, 0x0cf9);
}
static void soft_reset(void)
{
#if 1
/* link reset */
outb(0x02, 0x0cf9);
outb(0x06, 0x0cf9);
#endif
}
static void memreset_setup(void)
{
}
static void memreset(int controllers, const struct mem_controller *ctrl)
{
}
static inline void activate_spd_rom(const struct mem_controller *ctrl)
{
/* nothing to do */
}
static inline int spd_read_byte(unsigned device, unsigned address)
{
return smbus_read_byte(device, address);
}
#include "northbridge/intel/e7501/raminit.c"
#include "northbridge/intel/e7501/reset_test.c"
#include "sdram/generic_sdram.c"
#include "cpu/x86/car/copy_and_run.c"
#if USE_FALLBACK_IMAGE == 1
#include "southbridge/intel/i82801er/cmos_failover.c"
void real_main(unsigned long bist);
void amd64_main(unsigned long bist)
{
/* Is this a deliberate reset by the bios */
// post_code(0x22);
if (bios_reset_detected() && last_boot_normal()) {
goto normal_image;
}
/* This is the primary cpu how should I boot? */
else {
check_cmos_failed();
if (do_normal_boot()) {
goto normal_image;
}
else {
goto fallback_image;
}
}
normal_image:
// post_code(0x23);
__asm__ volatile ("jmp __normal_image"
: /* outputs */
: "a" (bist) /* inputs */
);
cpu_reset:
// post_code(0x24);
#if 0
//CPU reset will reset memtroller ???
asm volatile ("jmp __cpu_reset"
: /* outputs */
: "a"(bist) /* inputs */
);
#endif
fallback_image:
// post_code(0x25);
real_main(bist);
}
void real_main(unsigned long bist)
#else
void amd64_main(unsigned long bist)
#endif
{
static const struct mem_controller memctrl[] = {
{
.d0 = PCI_DEV(0, 0, 0),
.d0f1 = PCI_DEV(0, 0, 1),
.channel0 = { (0xa<<3)|0, (0xa<<3)|1, (0xa<<3)|2, 0 },
.channel1 = { (0xa<<3)|4, (0xa<<3)|5, (0xa<<3)|6, 0 },
},
};
unsigned cpu_reset = 0;
if (bist == 0)
{
// early_mtrr_init();
enable_lapic();
}
// post_code(0x32);
w83627hf_enable_serial(SERIAL_DEV, TTYS0_BASE);
uart_init();
console_init();
/* Halt if there was a built in self test failure */
report_bist_failure(bist);
// setup_s2735_resource_map();
if(bios_reset_detected()) {
cpu_reset = 1;
goto cpu_reset_x;
}
enable_smbus();
#if 0
dump_spd_registers(&memctrl[0]);
#endif
#if 0
dump_smbus_registers();
#endif
memreset_setup();
sdram_initialize(1, memctrl);
#if 0
dump_pci_devices();
#endif
#if 1
dump_pci_device(PCI_DEV(0, 0, 0));
#endif
#if 1
{
/* Check value of esp to verify if we have enough rom for stack in Cache as RAM */
unsigned v_esp;
__asm__ volatile (
"movl %%esp, %0\n\t"
: "=a" (v_esp)
);
#if CONFIG_USE_INIT
printk_debug("v_esp=%08x\r\n", v_esp);
#else
print_debug("v_esp="); print_debug_hex32(v_esp); print_debug("\r\n");
#endif
}
#endif
#if 1
cpu_reset_x:
#if CONFIG_USE_INIT
printk_debug("cpu_reset = %08x\r\n",cpu_reset);
#else
print_debug("cpu_reset = "); print_debug_hex32(cpu_reset); print_debug("\r\n");
#endif
if(cpu_reset == 0) {
print_debug("Clearing initial memory region: ");
}
print_debug("No cache as ram now - ");
/* store cpu_reset to ebx */
__asm__ volatile (
"movl %0, %%ebx\n\t"
::"a" (cpu_reset)
);
if(cpu_reset==0) {
#define CLEAR_FIRST_1M_RAM 1
#include "cpu/x86/car/cache_as_ram_post.c"
}
else {
#undef CLEAR_FIRST_1M_RAM
#include "cpu/x86/car/cache_as_ram_post.c"
}
__asm__ volatile (
/* set new esp */ /* before _RAMBASE */
"subl %0, %%ebp\n\t"
"subl %0, %%esp\n\t"
::"a"( (DCACHE_RAM_BASE + DCACHE_RAM_SIZE)- _RAMBASE )
);
{
unsigned new_cpu_reset;
/* get back cpu_reset from ebx */
__asm__ volatile (
"movl %%ebx, %0\n\t"
:"=a" (new_cpu_reset)
);
/* We can not go back any more, we lost old stack data in cache as ram*/
if(new_cpu_reset==0) {
print_debug("Use Ram as Stack now - done\r\n");
} else
{
print_debug("Use Ram as Stack now - \r\n");
}
#if CONFIG_USE_INIT
printk_debug("new_cpu_reset = %08x\r\n", new_cpu_reset);
#else
print_debug("new_cpu_reset = "); print_debug_hex32(new_cpu_reset); print_debug("\r\n");
#endif
/*copy and execute linuxbios_ram */
copy_and_run(new_cpu_reset);
/* We will not return */
}
#endif
print_debug("should not be here -\r\n");
}
|