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
|
/*
* Qemu PowerPC 440 Bamboo board emulation
*
* Copyright 2007 IBM Corporation.
* Authors:
* Jerone Young <jyoung5@us.ibm.com>
* Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
* Hollis Blanchard <hollisb@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 "boards.h"
#include "sysemu.h"
#include "ppc440.h"
#include "kvm.h"
#include "kvm_ppc.h"
#include "device_tree.h"
#include "loader.h"
#include "elf.h"
#define BINARY_DEVICE_TREE_FILE "bamboo.dtb"
static int bamboo_load_device_tree(target_phys_addr_t addr,
uint32_t ramsize,
target_phys_addr_t initrd_base,
target_phys_addr_t initrd_size,
const char *kernel_cmdline)
{
int ret = -1;
#ifdef CONFIG_FDT
uint32_t mem_reg_property[] = { 0, 0, ramsize };
char *filename;
int fdt_size;
void *fdt;
filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE);
if (!filename) {
goto out;
}
fdt = load_device_tree(filename, &fdt_size);
qemu_free(filename);
if (fdt == NULL) {
goto out;
}
/* Manipulate device tree in memory. */
ret = qemu_devtree_setprop(fdt, "/memory", "reg", mem_reg_property,
sizeof(mem_reg_property));
if (ret < 0)
fprintf(stderr, "couldn't set /memory/reg\n");
ret = qemu_devtree_setprop_cell(fdt, "/chosen", "linux,initrd-start",
initrd_base);
if (ret < 0)
fprintf(stderr, "couldn't set /chosen/linux,initrd-start\n");
ret = qemu_devtree_setprop_cell(fdt, "/chosen", "linux,initrd-end",
(initrd_base + initrd_size));
if (ret < 0)
fprintf(stderr, "couldn't set /chosen/linux,initrd-end\n");
ret = qemu_devtree_setprop_string(fdt, "/chosen", "bootargs",
kernel_cmdline);
if (ret < 0)
fprintf(stderr, "couldn't set /chosen/bootargs\n");
if (kvm_enabled())
kvmppc_fdt_update(fdt);
ret = rom_add_blob_fixed(BINARY_DEVICE_TREE_FILE, fdt, fdt_size, addr);
qemu_free(fdt);
out:
#endif
return ret;
}
static void bamboo_init(ram_addr_t ram_size,
const char *boot_device,
const char *kernel_filename,
const char *kernel_cmdline,
const char *initrd_filename,
const char *cpu_model)
{
unsigned int pci_irq_nrs[4] = { 28, 27, 26, 25 };
PCIBus *pcibus;
CPUState *env;
uint64_t elf_entry;
uint64_t elf_lowaddr;
target_phys_addr_t entry = 0;
target_phys_addr_t loadaddr = 0;
target_long kernel_size = 0;
target_ulong initrd_base = 0;
target_long initrd_size = 0;
target_ulong dt_base = 0;
int i;
/* Setup CPU. */
env = ppc440ep_init(&ram_size, &pcibus, pci_irq_nrs, 1, cpu_model);
if (pcibus) {
/* Register network interfaces. */
for (i = 0; i < nb_nics; i++) {
/* There are no PCI NICs on the Bamboo board, but there are
* PCI slots, so we can pick whatever default model we want. */
pci_nic_init_nofail(&nd_table[i], "e1000", NULL);
}
}
/* Load kernel. */
if (kernel_filename) {
kernel_size = load_uimage(kernel_filename, &entry, &loadaddr, NULL);
if (kernel_size < 0) {
kernel_size = load_elf(kernel_filename, 0, &elf_entry, &elf_lowaddr,
NULL, 1, ELF_MACHINE, 0);
entry = elf_entry;
loadaddr = elf_lowaddr;
}
/* XXX try again as binary */
if (kernel_size < 0) {
fprintf(stderr, "qemu: could not load kernel '%s'\n",
kernel_filename);
exit(1);
}
}
/* Load initrd. */
if (initrd_filename) {
initrd_base = kernel_size + loadaddr;
initrd_size = load_image_targphys(initrd_filename, initrd_base,
ram_size - initrd_base);
if (initrd_size < 0) {
fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
initrd_filename);
exit(1);
}
}
/* If we're loading a kernel directly, we must load the device tree too. */
if (kernel_filename) {
if (initrd_base)
dt_base = initrd_base + initrd_size;
else
dt_base = kernel_size + loadaddr;
if (bamboo_load_device_tree(dt_base, ram_size,
initrd_base, initrd_size, kernel_cmdline) < 0) {
fprintf(stderr, "couldn't load device tree\n");
exit(1);
}
cpu_synchronize_state(env);
/* Set initial guest state. */
env->gpr[1] = (16<<20) - 8;
env->gpr[3] = dt_base;
env->nip = entry;
/* XXX we currently depend on KVM to create some initial TLB entries. */
}
if (kvm_enabled())
kvmppc_init();
}
static QEMUMachine bamboo_machine = {
.name = "bamboo",
.desc = "bamboo",
.init = bamboo_init,
};
static void bamboo_machine_init(void)
{
qemu_register_machine(&bamboo_machine);
}
machine_init(bamboo_machine_init);
|
