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
|
/*
* Model of Petalogix linux reference design targeting Xilinx Spartan 3ADSP-1800
* boards.
*
* Copyright (c) 2009 Edgar E. Iglesias.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "sysbus.h"
#include "hw.h"
#include "net.h"
#include "flash.h"
#include "sysemu.h"
#include "devices.h"
#include "boards.h"
#include "device_tree.h"
#include "xilinx.h"
#include "loader.h"
#include "elf.h"
#include "blockdev.h"
#include "exec-memory.h"
#include "microblaze_pic_cpu.h"
#define LMB_BRAM_SIZE (128 * 1024)
#define FLASH_SIZE (16 * 1024 * 1024)
static struct
{
uint32_t bootstrap_pc;
uint32_t cmdline;
uint32_t fdt;
} boot_info;
static void main_cpu_reset(void *opaque)
{
CPUState *env = opaque;
cpu_reset(env);
env->regs[5] = boot_info.cmdline;
env->regs[7] = boot_info.fdt;
env->sregs[SR_PC] = boot_info.bootstrap_pc;
}
#define BINARY_DEVICE_TREE_FILE "petalogix-s3adsp1800.dtb"
static int petalogix_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)
{
char *path;
int fdt_size;
#ifdef CONFIG_FDT
void *fdt;
int r;
/* Try the local "mb.dtb" override. */
fdt = load_device_tree("mb.dtb", &fdt_size);
if (!fdt) {
path = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE);
if (path) {
fdt = load_device_tree(path, &fdt_size);
g_free(path);
}
if (!fdt)
return 0;
}
r = qemu_devtree_setprop_string(fdt, "/chosen", "bootargs", kernel_cmdline);
if (r < 0)
fprintf(stderr, "couldn't set /chosen/bootargs\n");
cpu_physical_memory_write (addr, (void *)fdt, fdt_size);
#else
/* We lack libfdt so we cannot manipulate the fdt. Just pass on the blob
to the kernel. */
fdt_size = load_image_targphys("mb.dtb", addr, 0x10000);
if (fdt_size < 0) {
path = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE);
if (path) {
fdt_size = load_image_targphys(path, addr, 0x10000);
g_free(path);
}
}
if (kernel_cmdline) {
fprintf(stderr,
"Warning: missing libfdt, cannot pass cmdline to kernel!\n");
}
#endif
return fdt_size;
}
static uint64_t translate_kernel_address(void *opaque, uint64_t addr)
{
return addr - 0x30000000LL;
}
static void
petalogix_s3adsp1800_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)
{
DeviceState *dev;
CPUState *env;
int kernel_size;
DriveInfo *dinfo;
int i;
target_phys_addr_t ddr_base = 0x90000000;
MemoryRegion *phys_lmb_bram = g_new(MemoryRegion, 1);
MemoryRegion *phys_ram = g_new(MemoryRegion, 1);
qemu_irq irq[32], *cpu_irq;
MemoryRegion *sysmem = get_system_memory();
/* init CPUs */
if (cpu_model == NULL) {
cpu_model = "microblaze";
}
env = cpu_init(cpu_model);
env->pvr.regs[10] = 0x0c000000; /* spartan 3a dsp family. */
qemu_register_reset(main_cpu_reset, env);
/* Attach emulated BRAM through the LMB. */
memory_region_init_ram(phys_lmb_bram,
"petalogix_s3adsp1800.lmb_bram", LMB_BRAM_SIZE);
vmstate_register_ram_global(phys_lmb_bram);
memory_region_add_subregion(sysmem, 0x00000000, phys_lmb_bram);
memory_region_init_ram(phys_ram, "petalogix_s3adsp1800.ram", ram_size);
vmstate_register_ram_global(phys_ram);
memory_region_add_subregion(sysmem, ddr_base, phys_ram);
dinfo = drive_get(IF_PFLASH, 0, 0);
pflash_cfi01_register(0xa0000000,
NULL, "petalogix_s3adsp1800.flash", FLASH_SIZE,
dinfo ? dinfo->bdrv : NULL, (64 * 1024),
FLASH_SIZE >> 16,
1, 0x89, 0x18, 0x0000, 0x0, 1);
cpu_irq = microblaze_pic_init_cpu(env);
dev = xilinx_intc_create(0x81800000, cpu_irq[0], 2);
for (i = 0; i < 32; i++) {
irq[i] = qdev_get_gpio_in(dev, i);
}
sysbus_create_simple("xilinx,uartlite", 0x84000000, irq[3]);
/* 2 timers at irq 2 @ 62 Mhz. */
xilinx_timer_create(0x83c00000, irq[0], 2, 62 * 1000000);
xilinx_ethlite_create(&nd_table[0], 0x81000000, irq[1], 0, 0);
if (kernel_filename) {
uint64_t entry, low, high;
uint32_t base32;
int big_endian = 0;
#ifdef TARGET_WORDS_BIGENDIAN
big_endian = 1;
#endif
/* Boots a kernel elf binary. */
kernel_size = load_elf(kernel_filename, NULL, NULL,
&entry, &low, &high,
big_endian, ELF_MACHINE, 0);
base32 = entry;
if (base32 == 0xc0000000) {
kernel_size = load_elf(kernel_filename, translate_kernel_address,
NULL, &entry, NULL, NULL,
big_endian, ELF_MACHINE, 0);
}
/* Always boot into physical ram. */
boot_info.bootstrap_pc = ddr_base + (entry & 0x0fffffff);
/* If it wasn't an ELF image, try an u-boot image. */
if (kernel_size < 0) {
target_phys_addr_t uentry, loadaddr;
kernel_size = load_uimage(kernel_filename, &uentry, &loadaddr, 0);
boot_info.bootstrap_pc = uentry;
high = (loadaddr + kernel_size + 3) & ~3;
}
/* Not an ELF image nor an u-boot image, try a RAW image. */
if (kernel_size < 0) {
kernel_size = load_image_targphys(kernel_filename, ddr_base,
ram_size);
boot_info.bootstrap_pc = ddr_base;
high = (ddr_base + kernel_size + 3) & ~3;
}
boot_info.cmdline = high + 4096;
if (kernel_cmdline && strlen(kernel_cmdline)) {
pstrcpy_targphys("cmdline", boot_info.cmdline, 256, kernel_cmdline);
}
/* Provide a device-tree. */
boot_info.fdt = boot_info.cmdline + 4096;
petalogix_load_device_tree(boot_info.fdt, ram_size,
0, 0,
kernel_cmdline);
}
}
static QEMUMachine petalogix_s3adsp1800_machine = {
.name = "petalogix-s3adsp1800",
.desc = "PetaLogix linux refdesign for xilinx Spartan 3ADSP1800",
.init = petalogix_s3adsp1800_init,
.is_default = 1
};
static void petalogix_s3adsp1800_machine_init(void)
{
qemu_register_machine(&petalogix_s3adsp1800_machine);
}
machine_init(petalogix_s3adsp1800_machine_init);
|
