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
|
/*
* Qemu PowerPC 440 board emualtion
*
* Copyright 2007 IBM Corporation.
* Authors: Jerone Young <jyoung5@us.ibm.com>
*
* This work is licensed under the GNU GPL license version 2 or later.
*
*/
#include "config.h"
#include "qemu-common.h"
#include "net.h"
#include "hw.h"
#include "pci.h"
#include "sysemu.h"
#include "ppc440.h"
#include "qemu-kvm.h"
#include "device_tree.h"
#define BINARY_DEVICE_TREE_FILE "bamboo.dtb"
#define bytes_to_mb(a) (a>>20)
void bamboo_init(ram_addr_t ram_size, int vga_ram_size,
const char *boot_device, DisplayState *ds,
const char *kernel_filename,
const char *kernel_cmdline,
const char *initrd_filename,
const char *cpu_model)
{
char *buf=NULL;
target_phys_addr_t ram_bases[4], ram_sizes[4];
NICInfo *nd;
qemu_irq *pic;
ppc4xx_pci_t *pci;
CPUState *env;
uint64_t ep=0;
uint64_t la=0;
int is_linux=1; /* Will assume allways is Linux for now */
target_long kernel_size=0;
target_ulong initrd_base=0;
target_long initrd_size=0;
target_ulong dt_base=0;
void *fdt;
int ret;
int ram_stick_sizes[] = {256<<20, 128<<20, 64<<20,
32<<20, 16<<20, 8<<20 }; /* in bytes */
ram_addr_t tmp_ram_size;
int i=0, k=0;
uint32_t cpu_freq;
uint32_t timebase_freq;
uint32_t mem_reg_property[]={0, 0, ram_size};
printf("%s: START\n", __func__);
/* Setup Memory */
printf("Ram size passed is: %i MB\n",
bytes_to_mb((int)ram_size));
tmp_ram_size = ram_size;
for (i=0; i < (sizeof(ram_sizes)/sizeof(ram_sizes[0])); i++) {
for (k=0; k < (sizeof(ram_stick_sizes)/sizeof(ram_stick_sizes[0])); k++) {
if ((tmp_ram_size/ram_stick_sizes[k]) > 0) {
ram_sizes[i] = ram_stick_sizes[k];
tmp_ram_size -= ram_stick_sizes[k];
break;
}
}
}
if (tmp_ram_size) {
printf("WARNING: %i MB left over memory is ram\n",
bytes_to_mb((int)tmp_ram_size));
ram_size -= tmp_ram_size;
mem_reg_property[2] = ram_size;
}
/* Setup CPU.
* XXX Since qemu doesn't implement 440, we just say it's a 405. Since
* we don't use qemu's CPU emulation it seems to be working OK. */
env = cpu_ppc_init("405");
if (!env) {
fprintf(stderr, "Unable to initialize CPU!\n");
exit(1);
}
/* call init */
printf("Calling function ppc440_init\n");
ppc440ep_init(env, ram_bases, ram_sizes, &pic, &pci, 1);
printf("Done calling ppc440_init\n");
/* Register mem */
cpu_register_physical_memory(0, ram_size, 0);
/* load kernel with uboot loader */
printf("%s: load kernel\n", __func__);
ret = load_uimage(kernel_filename, &ep, &la, &kernel_size, &is_linux);
if (ret < 0)
ret = load_elf(kernel_filename, 0, &ep, &la, NULL);
if (ret < 0) {
fprintf(stderr, "qemu: could not load kernel '%s'\n",
kernel_filename);
exit(1);
}
printf("kernel is at guest address: 0x%lx\n", (unsigned long)la);
/* load initrd */
if (initrd_filename) {
initrd_base = kernel_size + la;
printf("%s: load initrd\n", __func__);
initrd_size = load_image(initrd_filename,
phys_ram_base + initrd_base);
printf("initrd is at guest address: 0x%lx\n",
(unsigned long) initrd_base);
if (initrd_size < 0) {
fprintf(stderr,
"qemu: could not load initial ram disk '%s'\n",
initrd_filename);
exit(1);
}
}
#ifdef CONFIG_LIBFDT
/* get variable for device tree */
cpu_freq = read_proc_dt_prop_cell("cpus/cpu@0/clock-frequency");
timebase_freq = read_proc_dt_prop_cell("cpus/cpu@0/timebase-frequency");
/* load binary device tree into qemu (not guest memory) */
printf("%s: load device tree file\n", __func__);
/* get string size */
ret = asprintf(&buf, "%s/%s", bios_dir,
BINARY_DEVICE_TREE_FILE);
if (ret < 0) {
printf("%s: Unable to malloc string buffer buf\n",
__func__);
exit(1);
}
/* set base for device tree that will be in guest memory */
if (initrd_base)
dt_base = initrd_base + initrd_size;
else
dt_base = kernel_size + la;
fdt = load_device_tree(buf, (unsigned long)(phys_ram_base + dt_base));
if (fdt == NULL) {
printf("Loading device tree failed!\n");
exit(1);
}
printf("device tree address is at guest address: 0x%lx\n",
(unsigned long) dt_base);
free(buf);
/* manipulate device tree in memory */
dt_cell(fdt, "/cpus/cpu@0", "clock-frequency", cpu_freq);
dt_cell(fdt, "/cpus/cpu@0", "timebase-frequency", timebase_freq);
dt_cell_multi(fdt, "/memory", "reg", mem_reg_property,
sizeof(mem_reg_property));
dt_cell(fdt, "/chosen", "linux,initrd-start", initrd_base);
dt_cell(fdt, "/chosen", "linux,initrd-end",
(initrd_base + initrd_size));
dt_string(fdt, "/chosen", "bootargs", (char *)kernel_cmdline);
#endif
if (kvm_enabled()) {
/* XXX insert TLB entries */
env->gpr[1] = (16<<20) - 8;
#ifdef CONFIG_LIBFDT
/* location of device tree in register */
env->gpr[3] = dt_base;
#endif
env->nip = ep;
}
if (pci) {
int unit_id = 0;
/* Add virtio block devices. */
while ((i = drive_get_index(IF_VIRTIO, 0, unit_id)) != -1) {
virtio_blk_init(pci->bus, 0x1AF4, 0x1001,
drives_table[i].bdrv);
unit_id++;
}
/* Register network interfaces. */
for (i = 0; i < nb_nics; i++) {
nd = &nd_table[i];
if (!nd->model)
nd->model = "virtio";
pci_nic_init(pci->bus, nd, -1);
}
}
printf("%s: DONE\n", __func__);
}
QEMUMachine bamboo_machine = {
.name = "bamboo",
.desc = "bamboo",
.init = bamboo_init,
.max_cpus = 1,
};
|
