2 * QEMU ETRAX System Emulator
4 * Copyright (c) 2007 Edgar E. Iglesias, Axis Communications AB.
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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
35 #define FLASH_SIZE 0x2000000
36 #define INTMEM_SIZE (128 * 1024)
38 static uint32_t bootstrap_pc;
40 static void main_cpu_reset(void *opaque)
42 CPUState *env = opaque;
45 env->pc = bootstrap_pc;
49 void bareetraxfs_init (ram_addr_t ram_size,
50 const char *boot_device,
51 const char *kernel_filename, const char *kernel_cmdline,
52 const char *initrd_filename, const char *cpu_model)
57 struct etraxfs_dma_client *eth[2] = {NULL, NULL};
61 ram_addr_t phys_flash;
62 ram_addr_t phys_intmem;
65 if (cpu_model == NULL) {
66 cpu_model = "crisv32";
68 env = cpu_init(cpu_model);
69 qemu_register_reset(main_cpu_reset, env);
72 phys_ram = qemu_ram_alloc(ram_size);
73 cpu_register_physical_memory(0x40000000, ram_size, phys_ram | IO_MEM_RAM);
75 /* The ETRAX-FS has 128Kb on chip ram, the docs refer to it as the
77 phys_intmem = qemu_ram_alloc(INTMEM_SIZE);
78 cpu_register_physical_memory(0x38000000, INTMEM_SIZE,
79 phys_intmem | IO_MEM_RAM);
82 phys_flash = qemu_ram_alloc(FLASH_SIZE);
83 i = drive_get_index(IF_PFLASH, 0, 0);
84 pflash_cfi02_register(0x0, phys_flash,
85 i != -1 ? drives_table[i].bdrv : NULL, (64 * 1024),
87 1, 2, 0x0000, 0x0000, 0x0000, 0x0000,
89 irq = etraxfs_pic_init(env, 0x3001c000);
92 etraxfs_dmac = etraxfs_dmac_init(env, 0x30000000, 10);
93 for (i = 0; i < 10; i++) {
94 /* On ETRAX, odd numbered channels are inputs. */
95 etraxfs_dmac_connect(etraxfs_dmac, i, irq + 7 + i, i & 1);
98 /* Add the two ethernet blocks. */
99 eth[0] = etraxfs_eth_init(&nd_table[0], env, irq + 25, 0x30034000, 1);
101 eth[1] = etraxfs_eth_init(&nd_table[1], env,
102 irq + 26, 0x30036000, 2);
104 /* The DMA Connector block is missing, hardwire things for now. */
105 etraxfs_dmac_connect_client(etraxfs_dmac, 0, eth[0]);
106 etraxfs_dmac_connect_client(etraxfs_dmac, 1, eth[0] + 1);
108 etraxfs_dmac_connect_client(etraxfs_dmac, 6, eth[1]);
109 etraxfs_dmac_connect_client(etraxfs_dmac, 7, eth[1] + 1);
113 etraxfs_timer_init(env, irq + 0x1b, nmi + 1, 0x3001e000);
114 etraxfs_timer_init(env, irq + 0x1b, nmi + 1, 0x3005e000);
116 for (i = 0; i < 4; i++) {
118 etraxfs_ser_init(env, irq + 0x14 + i,
119 serial_hds[i], 0x30026000 + i * 0x2000);
123 if (kernel_filename) {
124 uint64_t entry, high;
127 /* Boots a kernel elf binary, os/linux-2.6/vmlinux from the axis
129 kernel_size = load_elf(kernel_filename, -0x80000000LL,
130 &entry, NULL, &high);
131 bootstrap_pc = entry;
132 if (kernel_size < 0) {
133 /* Takes a kimage from the axis devboard SDK. */
134 kernel_size = load_image_targphys(kernel_filename, 0x40004000,
136 bootstrap_pc = 0x40004000;
137 env->regs[9] = 0x40004000 + kernel_size;
139 env->regs[8] = 0x56902387; /* RAM init magic. */
141 if (kernel_cmdline && (kcmdline_len = strlen(kernel_cmdline))) {
142 if (kcmdline_len > 256) {
143 fprintf(stderr, "Too long CRIS kernel cmdline (max 256)\n");
146 /* Let the kernel know we are modifying the cmdline. */
147 env->regs[10] = 0x87109563;
148 env->regs[11] = 0x40000000;
149 pstrcpy_targphys(env->regs[11], 256, kernel_cmdline);
152 env->pc = bootstrap_pc;
154 printf ("pc =%x\n", env->pc);
155 printf ("ram size =%ld\n", ram_size);
158 QEMUMachine bareetraxfs_machine = {
159 .name = "bareetraxfs",
160 .desc = "Bare ETRAX FS board",
161 .init = bareetraxfs_init,