root / hw / etraxfs.c @ 682aea0e
History | View | Annotate | Download (6 kB)
1 |
/*
|
---|---|
2 |
* QEMU ETRAX System Emulator
|
3 |
*
|
4 |
* Copyright (c) 2007 Edgar E. Iglesias, Axis Communications AB.
|
5 |
*
|
6 |
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
7 |
* of this software and associated documentation files (the "Software"), to deal
|
8 |
* in the Software without restriction, including without limitation the rights
|
9 |
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
10 |
* copies of the Software, and to permit persons to whom the Software is
|
11 |
* furnished to do so, subject to the following conditions:
|
12 |
*
|
13 |
* The above copyright notice and this permission notice shall be included in
|
14 |
* all copies or substantial portions of the Software.
|
15 |
*
|
16 |
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
17 |
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
18 |
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
19 |
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
20 |
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
21 |
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
22 |
* THE SOFTWARE.
|
23 |
*/
|
24 |
|
25 |
#include "sysbus.h" |
26 |
#include "boards.h" |
27 |
#include "sysemu.h" |
28 |
#include "net.h" |
29 |
#include "flash.h" |
30 |
#include "etraxfs.h" |
31 |
|
32 |
#define FLASH_SIZE 0x2000000 |
33 |
#define INTMEM_SIZE (128 * 1024) |
34 |
|
35 |
static uint32_t bootstrap_pc;
|
36 |
|
37 |
static void main_cpu_reset(void *opaque) |
38 |
{ |
39 |
CPUState *env = opaque; |
40 |
cpu_reset(env); |
41 |
|
42 |
env->pc = bootstrap_pc; |
43 |
} |
44 |
|
45 |
static
|
46 |
void bareetraxfs_init (ram_addr_t ram_size,
|
47 |
const char *boot_device, |
48 |
const char *kernel_filename, const char *kernel_cmdline, |
49 |
const char *initrd_filename, const char *cpu_model) |
50 |
{ |
51 |
DeviceState *dev; |
52 |
CPUState *env; |
53 |
qemu_irq irq[30], nmi[2], *cpu_irq; |
54 |
void *etraxfs_dmac;
|
55 |
struct etraxfs_dma_client *eth[2] = {NULL, NULL}; |
56 |
int kernel_size;
|
57 |
int i;
|
58 |
ram_addr_t phys_ram; |
59 |
ram_addr_t phys_flash; |
60 |
ram_addr_t phys_intmem; |
61 |
|
62 |
/* init CPUs */
|
63 |
if (cpu_model == NULL) { |
64 |
cpu_model = "crisv32";
|
65 |
} |
66 |
env = cpu_init(cpu_model); |
67 |
qemu_register_reset(main_cpu_reset, 0, env);
|
68 |
|
69 |
/* allocate RAM */
|
70 |
phys_ram = qemu_ram_alloc(ram_size); |
71 |
cpu_register_physical_memory(0x40000000, ram_size, phys_ram | IO_MEM_RAM);
|
72 |
|
73 |
/* The ETRAX-FS has 128Kb on chip ram, the docs refer to it as the
|
74 |
internal memory. */
|
75 |
phys_intmem = qemu_ram_alloc(INTMEM_SIZE); |
76 |
cpu_register_physical_memory(0x38000000, INTMEM_SIZE,
|
77 |
phys_intmem | IO_MEM_RAM); |
78 |
|
79 |
|
80 |
phys_flash = qemu_ram_alloc(FLASH_SIZE); |
81 |
i = drive_get_index(IF_PFLASH, 0, 0); |
82 |
pflash_cfi02_register(0x0, phys_flash,
|
83 |
i != -1 ? drives_table[i].bdrv : NULL, (64 * 1024), |
84 |
FLASH_SIZE >> 16,
|
85 |
1, 2, 0x0000, 0x0000, 0x0000, 0x0000, |
86 |
0x555, 0x2aa); |
87 |
cpu_irq = cris_pic_init_cpu(env); |
88 |
dev = sysbus_create_varargs("etraxfs,pic", 0x3001c000, |
89 |
cpu_irq[0], cpu_irq[1], NULL); |
90 |
/* FIXME: Is there a proper way to signal vectors to the CPU core? */
|
91 |
qdev_set_prop_ptr(dev, "interrupt_vector", &env->interrupt_vector);
|
92 |
for (i = 0; i < 30; i++) { |
93 |
irq[i] = qdev_get_gpio_in(dev, i); |
94 |
} |
95 |
nmi[0] = qdev_get_gpio_in(dev, 30); |
96 |
nmi[1] = qdev_get_gpio_in(dev, 31); |
97 |
|
98 |
etraxfs_dmac = etraxfs_dmac_init(env, 0x30000000, 10); |
99 |
for (i = 0; i < 10; i++) { |
100 |
/* On ETRAX, odd numbered channels are inputs. */
|
101 |
etraxfs_dmac_connect(etraxfs_dmac, i, irq + 7 + i, i & 1); |
102 |
} |
103 |
|
104 |
/* Add the two ethernet blocks. */
|
105 |
eth[0] = etraxfs_eth_init(&nd_table[0], env, 0x30034000, 1); |
106 |
if (nb_nics > 1) |
107 |
eth[1] = etraxfs_eth_init(&nd_table[1], env, 0x30036000, 2); |
108 |
|
109 |
/* The DMA Connector block is missing, hardwire things for now. */
|
110 |
etraxfs_dmac_connect_client(etraxfs_dmac, 0, eth[0]); |
111 |
etraxfs_dmac_connect_client(etraxfs_dmac, 1, eth[0] + 1); |
112 |
if (eth[1]) { |
113 |
etraxfs_dmac_connect_client(etraxfs_dmac, 6, eth[1]); |
114 |
etraxfs_dmac_connect_client(etraxfs_dmac, 7, eth[1] + 1); |
115 |
} |
116 |
|
117 |
/* 2 timers. */
|
118 |
sysbus_create_varargs("etraxfs,timer", 0x3001e000, irq[0x1b], nmi[1], NULL); |
119 |
sysbus_create_varargs("etraxfs,timer", 0x3005e000, irq[0x1b], nmi[1], NULL); |
120 |
|
121 |
for (i = 0; i < 4; i++) { |
122 |
sysbus_create_simple("etraxfs,serial", 0x30026000 + i * 0x2000, |
123 |
irq[0x14 + i]);
|
124 |
} |
125 |
|
126 |
if (kernel_filename) {
|
127 |
uint64_t entry, high; |
128 |
int kcmdline_len;
|
129 |
|
130 |
/* Boots a kernel elf binary, os/linux-2.6/vmlinux from the axis
|
131 |
devboard SDK. */
|
132 |
kernel_size = load_elf(kernel_filename, -0x80000000LL,
|
133 |
&entry, NULL, &high);
|
134 |
bootstrap_pc = entry; |
135 |
if (kernel_size < 0) { |
136 |
/* Takes a kimage from the axis devboard SDK. */
|
137 |
kernel_size = load_image_targphys(kernel_filename, 0x40004000,
|
138 |
ram_size); |
139 |
bootstrap_pc = 0x40004000;
|
140 |
env->regs[9] = 0x40004000 + kernel_size; |
141 |
} |
142 |
env->regs[8] = 0x56902387; /* RAM init magic. */ |
143 |
|
144 |
if (kernel_cmdline && (kcmdline_len = strlen(kernel_cmdline))) {
|
145 |
if (kcmdline_len > 256) { |
146 |
fprintf(stderr, "Too long CRIS kernel cmdline (max 256)\n");
|
147 |
exit(1);
|
148 |
} |
149 |
/* Let the kernel know we are modifying the cmdline. */
|
150 |
env->regs[10] = 0x87109563; |
151 |
env->regs[11] = 0x40000000; |
152 |
pstrcpy_targphys(env->regs[11], 256, kernel_cmdline); |
153 |
} |
154 |
} |
155 |
env->pc = bootstrap_pc; |
156 |
|
157 |
printf ("pc =%x\n", env->pc);
|
158 |
printf ("ram size =%ld\n", ram_size);
|
159 |
} |
160 |
|
161 |
static QEMUMachine bareetraxfs_machine = {
|
162 |
.name = "bareetraxfs",
|
163 |
.desc = "Bare ETRAX FS board",
|
164 |
.init = bareetraxfs_init, |
165 |
.is_default = 1,
|
166 |
}; |
167 |
|
168 |
static void bareetraxfs_machine_init(void) |
169 |
{ |
170 |
qemu_register_machine(&bareetraxfs_machine); |
171 |
} |
172 |
|
173 |
machine_init(bareetraxfs_machine_init); |