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
31 #define FLASH_SIZE 0x2000000
32 #define INTMEM_SIZE (128 * 1024)
34 static uint32_t bootstrap_pc;
36 static void main_cpu_reset(void *opaque)
38 CPUState *env = opaque;
41 env->pc = bootstrap_pc;
45 void bareetraxfs_init (ram_addr_t ram_size,
46 const char *boot_device,
47 const char *kernel_filename, const char *kernel_cmdline,
48 const char *initrd_filename, const char *cpu_model)
53 struct etraxfs_dma_client *eth[2] = {NULL, NULL};
57 ram_addr_t phys_flash;
58 ram_addr_t phys_intmem;
61 if (cpu_model == NULL) {
62 cpu_model = "crisv32";
64 env = cpu_init(cpu_model);
65 qemu_register_reset(main_cpu_reset, env);
68 phys_ram = qemu_ram_alloc(ram_size);
69 cpu_register_physical_memory(0x40000000, ram_size, phys_ram | IO_MEM_RAM);
71 /* The ETRAX-FS has 128Kb on chip ram, the docs refer to it as the
73 phys_intmem = qemu_ram_alloc(INTMEM_SIZE);
74 cpu_register_physical_memory(0x38000000, INTMEM_SIZE,
75 phys_intmem | IO_MEM_RAM);
78 phys_flash = qemu_ram_alloc(FLASH_SIZE);
79 i = drive_get_index(IF_PFLASH, 0, 0);
80 pflash_cfi02_register(0x0, phys_flash,
81 i != -1 ? drives_table[i].bdrv : NULL, (64 * 1024),
83 1, 2, 0x0000, 0x0000, 0x0000, 0x0000,
85 irq = etraxfs_pic_init(env, 0x3001c000);
88 etraxfs_dmac = etraxfs_dmac_init(env, 0x30000000, 10);
89 for (i = 0; i < 10; i++) {
90 /* On ETRAX, odd numbered channels are inputs. */
91 etraxfs_dmac_connect(etraxfs_dmac, i, irq + 7 + i, i & 1);
94 /* Add the two ethernet blocks. */
95 eth[0] = etraxfs_eth_init(&nd_table[0], env, irq + 25, 0x30034000, 1);
97 eth[1] = etraxfs_eth_init(&nd_table[1], env,
98 irq + 26, 0x30036000, 2);
100 /* The DMA Connector block is missing, hardwire things for now. */
101 etraxfs_dmac_connect_client(etraxfs_dmac, 0, eth[0]);
102 etraxfs_dmac_connect_client(etraxfs_dmac, 1, eth[0] + 1);
104 etraxfs_dmac_connect_client(etraxfs_dmac, 6, eth[1]);
105 etraxfs_dmac_connect_client(etraxfs_dmac, 7, eth[1] + 1);
109 etraxfs_timer_init(env, irq + 0x1b, nmi + 1, 0x3001e000);
110 etraxfs_timer_init(env, irq + 0x1b, nmi + 1, 0x3005e000);
112 for (i = 0; i < 4; i++) {
113 sysbus_create_simple("etraxfs,serial", 0x30026000 + i * 0x2000,
117 if (kernel_filename) {
118 uint64_t entry, high;
121 /* Boots a kernel elf binary, os/linux-2.6/vmlinux from the axis
123 kernel_size = load_elf(kernel_filename, -0x80000000LL,
124 &entry, NULL, &high);
125 bootstrap_pc = entry;
126 if (kernel_size < 0) {
127 /* Takes a kimage from the axis devboard SDK. */
128 kernel_size = load_image_targphys(kernel_filename, 0x40004000,
130 bootstrap_pc = 0x40004000;
131 env->regs[9] = 0x40004000 + kernel_size;
133 env->regs[8] = 0x56902387; /* RAM init magic. */
135 if (kernel_cmdline && (kcmdline_len = strlen(kernel_cmdline))) {
136 if (kcmdline_len > 256) {
137 fprintf(stderr, "Too long CRIS kernel cmdline (max 256)\n");
140 /* Let the kernel know we are modifying the cmdline. */
141 env->regs[10] = 0x87109563;
142 env->regs[11] = 0x40000000;
143 pstrcpy_targphys(env->regs[11], 256, kernel_cmdline);
146 env->pc = bootstrap_pc;
148 printf ("pc =%x\n", env->pc);
149 printf ("ram size =%ld\n", ram_size);
152 QEMUMachine bareetraxfs_machine = {
153 .name = "bareetraxfs",
154 .desc = "Bare ETRAX FS board",
155 .init = bareetraxfs_init,