2 * QEMU model for the AXIS devboard 88.
4 * Copyright (c) 2009 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
44 static struct nand_state_t nand_state;
45 static uint32_t nand_readl (void *opaque, target_phys_addr_t addr)
47 struct nand_state_t *s = opaque;
51 r = nand_getio(s->nand);
52 nand_getpins(s->nand, &rdy);
55 DNAND(printf("%s addr=%x r=%x\n", __func__, addr, r));
60 nand_writel (void *opaque, target_phys_addr_t addr, uint32_t value)
62 struct nand_state_t *s = opaque;
65 DNAND(printf("%s addr=%x v=%x\n", __func__, addr, value));
66 nand_setpins(s->nand, s->cle, s->ale, s->ce, 1, 0);
67 nand_setio(s->nand, value);
68 nand_getpins(s->nand, &rdy);
72 static CPUReadMemoryFunc *nand_read[] = {
78 static CPUWriteMemoryFunc *nand_write[] = {
87 unsigned int shiftreg;
96 static void tempsensor_clkedge(struct tempsensor_t *s,
97 unsigned int clk, unsigned int data_in)
99 D(printf("%s clk=%d state=%d sr=%x\n", __func__,
100 clk, s->state, s->shiftreg));
107 /* Output reg is clocked at negedge. */
129 /* Indata is sampled at posedge. */
133 s->shiftreg |= data_in & 1;
135 D(printf("%s cfgreg=%x\n", __func__, s->shiftreg));
136 s->regs[0] = s->shiftreg;
140 if ((s->regs[0] & 0xff) == 0) {
141 /* 25 degrees celcius. */
142 s->shiftreg = 0x0b9f;
143 } else if ((s->regs[0] & 0xff) == 0xff) {
144 /* Sensor ID, 0x8100 LM70. */
145 s->shiftreg = 0x8100;
147 printf("Invalid tempsens state %x\n", s->regs[0]);
155 #define RW_PA_DOUT 0x00
156 #define R_PA_DIN 0x01
157 #define RW_PA_OE 0x02
158 #define RW_PD_DOUT 0x10
159 #define R_PD_DIN 0x11
160 #define RW_PD_OE 0x12
162 static struct gpio_state_t
164 struct nand_state_t *nand;
165 struct tempsensor_t tempsensor;
166 uint32_t regs[0x5c / 4];
169 static uint32_t gpio_readl (void *opaque, target_phys_addr_t addr)
171 struct gpio_state_t *s = opaque;
178 r = s->regs[RW_PA_DOUT] & s->regs[RW_PA_OE];
180 /* Encode pins from the nand. */
181 r |= s->nand->rdy << 7;
184 r = s->regs[RW_PD_DOUT] & s->regs[RW_PD_OE];
186 /* Encode temp sensor pins. */
187 r |= (!!(s->tempsensor.shiftreg & 0x10000)) << 4;
195 D(printf("%s %x=%x\n", __func__, addr, r));
198 static void gpio_writel (void *opaque, target_phys_addr_t addr, uint32_t value)
200 struct gpio_state_t *s = opaque;
201 D(printf("%s %x=%x\n", __func__, addr, value));
207 /* Decode nand pins. */
208 s->nand->ale = !!(value & (1 << 6));
209 s->nand->cle = !!(value & (1 << 5));
210 s->nand->ce = !!(value & (1 << 4));
212 s->regs[addr] = value;
216 /* Temp sensor clk. */
217 if ((s->regs[addr] ^ value) & 2)
218 tempsensor_clkedge(&s->tempsensor, !!(value & 2),
220 s->regs[addr] = value;
224 s->regs[addr] = value;
229 static CPUReadMemoryFunc *gpio_read[] = {
234 static CPUWriteMemoryFunc *gpio_write[] = {
239 #define INTMEM_SIZE (128 * 1024)
241 static uint32_t bootstrap_pc;
242 static void main_cpu_reset(void *opaque)
244 CPUState *env = opaque;
247 env->pc = bootstrap_pc;
251 void axisdev88_init (ram_addr_t ram_size,
252 const char *boot_device,
253 const char *kernel_filename, const char *kernel_cmdline,
254 const char *initrd_filename, const char *cpu_model)
259 struct etraxfs_dma_client *eth[2] = {NULL, NULL};
265 ram_addr_t phys_intmem;
268 if (cpu_model == NULL) {
269 cpu_model = "crisv32";
271 env = cpu_init(cpu_model);
272 qemu_register_reset(main_cpu_reset, env);
275 phys_ram = qemu_ram_alloc(ram_size);
276 cpu_register_physical_memory(0x40000000, ram_size, phys_ram | IO_MEM_RAM);
278 /* The ETRAX-FS has 128Kb on chip ram, the docs refer to it as the
280 phys_intmem = qemu_ram_alloc(INTMEM_SIZE);
281 cpu_register_physical_memory(0x38000000, INTMEM_SIZE,
282 phys_intmem | IO_MEM_RAM);
285 /* Attach a NAND flash to CS1. */
286 nand_state.nand = nand_init(NAND_MFR_STMICRO, 0x39);
287 nand_regs = cpu_register_io_memory(0, nand_read, nand_write, &nand_state);
288 cpu_register_physical_memory(0x10000000, 0x05000000, nand_regs);
290 gpio_state.nand = &nand_state;
291 gpio_regs = cpu_register_io_memory(0, gpio_read, gpio_write, &gpio_state);
292 cpu_register_physical_memory(0x3001a000, 0x5c, gpio_regs);
295 irq = etraxfs_pic_init(env, 0x3001c000);
298 etraxfs_dmac = etraxfs_dmac_init(env, 0x30000000, 10);
299 for (i = 0; i < 10; i++) {
300 /* On ETRAX, odd numbered channels are inputs. */
301 etraxfs_dmac_connect(etraxfs_dmac, i, irq + 7 + i, i & 1);
304 /* Add the two ethernet blocks. */
305 eth[0] = etraxfs_eth_init(&nd_table[0], env, irq + 25, 0x30034000, 1);
307 eth[1] = etraxfs_eth_init(&nd_table[1], env,
308 irq + 26, 0x30036000, 2);
310 /* The DMA Connector block is missing, hardwire things for now. */
311 etraxfs_dmac_connect_client(etraxfs_dmac, 0, eth[0]);
312 etraxfs_dmac_connect_client(etraxfs_dmac, 1, eth[0] + 1);
314 etraxfs_dmac_connect_client(etraxfs_dmac, 6, eth[1]);
315 etraxfs_dmac_connect_client(etraxfs_dmac, 7, eth[1] + 1);
319 etraxfs_timer_init(env, irq + 0x1b, nmi + 1, 0x3001e000);
320 etraxfs_timer_init(env, irq + 0x1b, nmi + 1, 0x3005e000);
322 for (i = 0; i < 4; i++) {
323 sysbus_create_simple("etraxfs,serial", 0x30026000 + i * 0x2000,
327 if (kernel_filename) {
328 uint64_t entry, high;
331 /* Boots a kernel elf binary, os/linux-2.6/vmlinux from the axis
333 kernel_size = load_elf(kernel_filename, -0x80000000LL,
334 &entry, NULL, &high);
335 bootstrap_pc = entry;
336 if (kernel_size < 0) {
337 /* Takes a kimage from the axis devboard SDK. */
338 kernel_size = load_image_targphys(kernel_filename, 0x40004000,
340 bootstrap_pc = 0x40004000;
341 env->regs[9] = 0x40004000 + kernel_size;
343 env->regs[8] = 0x56902387; /* RAM init magic. */
345 if (kernel_cmdline && (kcmdline_len = strlen(kernel_cmdline))) {
346 if (kcmdline_len > 256) {
347 fprintf(stderr, "Too long CRIS kernel cmdline (max 256)\n");
350 /* Let the kernel know we are modifying the cmdline. */
351 env->regs[10] = 0x87109563;
352 env->regs[11] = 0x40000000;
353 pstrcpy_targphys(env->regs[11], 256, kernel_cmdline);
356 env->pc = bootstrap_pc;
358 printf ("pc =%x\n", env->pc);
359 printf ("ram size =%ld\n", ram_size);
362 QEMUMachine axisdev88_machine = {
363 .name = "axis-dev88",
364 .desc = "AXIS devboard 88",
365 .init = axisdev88_init,