|
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 #include <time.h> |
|
25 #include <sys/time.h> |
|
26 #include "hw.h" |
|
27 #include "net.h" |
|
28 #include "flash.h" |
|
29 #include "sysemu.h" |
|
30 #include "devices.h" |
|
31 #include "boards.h" |
|
32 |
|
33 #include "etraxfs.h" |
|
34 |
|
35 #define FLASH_SIZE 0x2000000 |
|
36 #define INTMEM_SIZE (128 * 1024) |
|
37 |
|
38 static uint32_t bootstrap_pc; |
|
39 |
|
40 static void main_cpu_reset(void *opaque) |
|
41 { |
|
42 CPUState *env = opaque; |
|
43 cpu_reset(env); |
|
44 |
|
45 env->pregs[PR_CCS] &= ~I_FLAG; |
|
46 env->pc = bootstrap_pc; |
|
47 } |
|
48 |
|
49 static |
|
50 void bareetraxfs_init (ram_addr_t ram_size, int vga_ram_size, |
|
51 const char *boot_device, DisplayState *ds, |
|
52 const char *kernel_filename, const char *kernel_cmdline, |
|
53 const char *initrd_filename, const char *cpu_model) |
|
54 { |
|
55 CPUState *env; |
|
56 struct etraxfs_pic *pic; |
|
57 void *etraxfs_dmac; |
|
58 struct etraxfs_dma_client *eth[2] = {NULL, NULL}; |
|
59 int kernel_size; |
|
60 int i; |
|
61 ram_addr_t phys_ram; |
|
62 ram_addr_t phys_flash; |
|
63 ram_addr_t phys_intmem; |
|
64 |
|
65 /* init CPUs */ |
|
66 if (cpu_model == NULL) { |
|
67 cpu_model = "crisv32"; |
|
68 } |
|
69 env = cpu_init(cpu_model); |
|
70 qemu_register_reset(main_cpu_reset, env); |
|
71 |
|
72 /* allocate RAM */ |
|
73 phys_ram = qemu_ram_alloc(ram_size); |
|
74 cpu_register_physical_memory(0x40000000, ram_size, phys_ram | IO_MEM_RAM); |
|
75 |
|
76 /* The ETRAX-FS has 128Kb on chip ram, the docs refer to it as the |
|
77 internal memory. */ |
|
78 phys_intmem = qemu_ram_alloc(INTMEM_SIZE); |
|
79 cpu_register_physical_memory(0x38000000, INTMEM_SIZE, |
|
80 phys_intmem | IO_MEM_RAM); |
|
81 |
|
82 |
|
83 phys_flash = qemu_ram_alloc(FLASH_SIZE); |
|
84 i = drive_get_index(IF_PFLASH, 0, 0); |
|
85 pflash_cfi02_register(0x0, phys_flash, |
|
86 i != -1 ? drives_table[i].bdrv : NULL, (64 * 1024), |
|
87 FLASH_SIZE >> 16, |
|
88 1, 2, 0x0000, 0x0000, 0x0000, 0x0000, |
|
89 0x555, 0x2aa); |
|
90 pic = etraxfs_pic_init(env, 0x3001c000); |
|
91 etraxfs_dmac = etraxfs_dmac_init(env, 0x30000000, 10); |
|
92 for (i = 0; i < 10; i++) { |
|
93 /* On ETRAX, odd numbered channels are inputs. */ |
|
94 etraxfs_dmac_connect(etraxfs_dmac, i, pic->irq + 7 + i, i & 1); |
|
95 } |
|
96 |
|
97 /* Add the two ethernet blocks. */ |
|
98 eth[0] = etraxfs_eth_init(&nd_table[0], env, pic->irq + 25, 0x30034000); |
|
99 if (nb_nics > 1) |
|
100 eth[1] = etraxfs_eth_init(&nd_table[1], env, pic->irq + 26, 0x30036000); |
|
101 |
|
102 /* The DMA Connector block is missing, hardwire things for now. */ |
|
103 etraxfs_dmac_connect_client(etraxfs_dmac, 0, eth[0]); |
|
104 etraxfs_dmac_connect_client(etraxfs_dmac, 1, eth[0] + 1); |
|
105 if (eth[1]) { |
|
106 etraxfs_dmac_connect_client(etraxfs_dmac, 6, eth[1]); |
|
107 etraxfs_dmac_connect_client(etraxfs_dmac, 7, eth[1] + 1); |
|
108 } |
|
109 |
|
110 /* 2 timers. */ |
|
111 etraxfs_timer_init(env, pic->irq + 0x1b, pic->nmi + 1, 0x3001e000); |
|
112 etraxfs_timer_init(env, pic->irq + 0x1b, pic->nmi + 1, 0x3005e000); |
|
113 |
|
114 for (i = 0; i < 4; i++) { |
|
115 if (serial_hds[i]) { |
|
116 etraxfs_ser_init(env, pic->irq + 0x14 + i, |
|
117 serial_hds[i], 0x30026000 + i * 0x2000); |
|
118 } |
|
119 } |
|
120 |
|
121 if (kernel_filename) { |
|
122 uint64_t entry, high; |
|
123 int kcmdline_len; |
|
124 |
|
125 /* Boots a kernel elf binary, os/linux-2.6/vmlinux from the axis |
|
126 devboard SDK. */ |
|
127 kernel_size = load_elf(kernel_filename, -0x80000000LL, |
|
128 &entry, NULL, &high); |
|
129 bootstrap_pc = entry; |
|
130 if (kernel_size < 0) { |
|
131 /* Takes a kimage from the axis devboard SDK. */ |
|
132 kernel_size = load_image(kernel_filename, phys_ram_base + 0x4000); |
|
133 bootstrap_pc = 0x40004000; |
|
134 env->regs[9] = 0x40004000 + kernel_size; |
|
135 } |
|
136 env->regs[8] = 0x56902387; /* RAM init magic. */ |
|
137 |
|
138 if (kernel_cmdline && (kcmdline_len = strlen(kernel_cmdline))) { |
|
139 if (kcmdline_len > 256) { |
|
140 fprintf(stderr, "Too long CRIS kernel cmdline (max 256)\n"); |
|
141 exit(1); |
|
142 } |
|
143 pstrcpy_targphys(high, 256, kernel_cmdline); |
|
144 /* Let the kernel know we are modifying the cmdline. */ |
|
145 env->regs[10] = 0x87109563; |
|
146 env->regs[11] = high; |
|
147 } |
|
148 } |
|
149 env->pc = bootstrap_pc; |
|
150 |
|
151 printf ("pc =%x\n", env->pc); |
|
152 printf ("ram size =%ld\n", ram_size); |
|
153 } |
|
154 |
|
155 QEMUMachine bareetraxfs_machine = { |
|
156 .name = "bareetraxfs", |
|
157 .desc = "Bare ETRAX FS board", |
|
158 .init = bareetraxfs_init, |
|
159 .ram_require = 0x8000000, |
|
160 }; |