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
33 #include "cris-boot.h"
47 static struct nand_state_t nand_state;
48 static uint32_t nand_readl (void *opaque, target_phys_addr_t addr)
50 struct nand_state_t *s = opaque;
54 r = nand_getio(s->nand);
55 nand_getpins(s->nand, &rdy);
58 DNAND(printf("%s addr=%x r=%x\n", __func__, addr, r));
63 nand_writel (void *opaque, target_phys_addr_t addr, uint32_t value)
65 struct nand_state_t *s = opaque;
68 DNAND(printf("%s addr=%x v=%x\n", __func__, addr, value));
69 nand_setpins(s->nand, s->cle, s->ale, s->ce, 1, 0);
70 nand_setio(s->nand, value);
71 nand_getpins(s->nand, &rdy);
75 static CPUReadMemoryFunc * const nand_read[] = {
81 static CPUWriteMemoryFunc * const nand_write[] = {
90 unsigned int shiftreg;
99 static void tempsensor_clkedge(struct tempsensor_t *s,
100 unsigned int clk, unsigned int data_in)
102 D(printf("%s clk=%d state=%d sr=%x\n", __func__,
103 clk, s->state, s->shiftreg));
110 /* Output reg is clocked at negedge. */
132 /* Indata is sampled at posedge. */
136 s->shiftreg |= data_in & 1;
138 D(printf("%s cfgreg=%x\n", __func__, s->shiftreg));
139 s->regs[0] = s->shiftreg;
143 if ((s->regs[0] & 0xff) == 0) {
144 /* 25 degrees celcius. */
145 s->shiftreg = 0x0b9f;
146 } else if ((s->regs[0] & 0xff) == 0xff) {
147 /* Sensor ID, 0x8100 LM70. */
148 s->shiftreg = 0x8100;
150 printf("Invalid tempsens state %x\n", s->regs[0]);
158 #define RW_PA_DOUT 0x00
159 #define R_PA_DIN 0x01
160 #define RW_PA_OE 0x02
161 #define RW_PD_DOUT 0x10
162 #define R_PD_DIN 0x11
163 #define RW_PD_OE 0x12
165 static struct gpio_state_t
167 struct nand_state_t *nand;
168 struct tempsensor_t tempsensor;
169 uint32_t regs[0x5c / 4];
172 static uint32_t gpio_readl (void *opaque, target_phys_addr_t addr)
174 struct gpio_state_t *s = opaque;
181 r = s->regs[RW_PA_DOUT] & s->regs[RW_PA_OE];
183 /* Encode pins from the nand. */
184 r |= s->nand->rdy << 7;
187 r = s->regs[RW_PD_DOUT] & s->regs[RW_PD_OE];
189 /* Encode temp sensor pins. */
190 r |= (!!(s->tempsensor.shiftreg & 0x10000)) << 4;
198 D(printf("%s %x=%x\n", __func__, addr, r));
201 static void gpio_writel (void *opaque, target_phys_addr_t addr, uint32_t value)
203 struct gpio_state_t *s = opaque;
204 D(printf("%s %x=%x\n", __func__, addr, value));
210 /* Decode nand pins. */
211 s->nand->ale = !!(value & (1 << 6));
212 s->nand->cle = !!(value & (1 << 5));
213 s->nand->ce = !!(value & (1 << 4));
215 s->regs[addr] = value;
219 /* Temp sensor clk. */
220 if ((s->regs[addr] ^ value) & 2)
221 tempsensor_clkedge(&s->tempsensor, !!(value & 2),
223 s->regs[addr] = value;
227 s->regs[addr] = value;
232 static CPUReadMemoryFunc * const gpio_read[] = {
237 static CPUWriteMemoryFunc * const gpio_write[] = {
242 #define INTMEM_SIZE (128 * 1024)
244 static struct cris_load_info li;
247 void axisdev88_init (ram_addr_t ram_size,
248 const char *boot_device,
249 const char *kernel_filename, const char *kernel_cmdline,
250 const char *initrd_filename, const char *cpu_model)
255 qemu_irq irq[30], nmi[2], *cpu_irq;
257 struct etraxfs_dma_client *eth[2] = {NULL, NULL};
262 ram_addr_t phys_intmem;
265 if (cpu_model == NULL) {
266 cpu_model = "crisv32";
268 env = cpu_init(cpu_model);
271 phys_ram = qemu_ram_alloc(NULL, "axisdev88.ram", ram_size);
272 cpu_register_physical_memory(0x40000000, ram_size, phys_ram | IO_MEM_RAM);
274 /* The ETRAX-FS has 128Kb on chip ram, the docs refer to it as the
276 phys_intmem = qemu_ram_alloc(NULL, "axisdev88.chipram", INTMEM_SIZE);
277 cpu_register_physical_memory(0x38000000, INTMEM_SIZE,
278 phys_intmem | IO_MEM_RAM);
281 /* Attach a NAND flash to CS1. */
282 nand_state.nand = nand_init(NAND_MFR_STMICRO, 0x39);
283 nand_regs = cpu_register_io_memory(nand_read, nand_write, &nand_state,
284 DEVICE_NATIVE_ENDIAN);
285 cpu_register_physical_memory(0x10000000, 0x05000000, nand_regs);
287 gpio_state.nand = &nand_state;
288 gpio_regs = cpu_register_io_memory(gpio_read, gpio_write, &gpio_state,
289 DEVICE_NATIVE_ENDIAN);
290 cpu_register_physical_memory(0x3001a000, 0x5c, gpio_regs);
293 cpu_irq = cris_pic_init_cpu(env);
294 dev = qdev_create(NULL, "etraxfs,pic");
295 /* FIXME: Is there a proper way to signal vectors to the CPU core? */
296 qdev_prop_set_ptr(dev, "interrupt_vector", &env->interrupt_vector);
297 qdev_init_nofail(dev);
298 s = sysbus_from_qdev(dev);
299 sysbus_mmio_map(s, 0, 0x3001c000);
300 sysbus_connect_irq(s, 0, cpu_irq[0]);
301 sysbus_connect_irq(s, 1, cpu_irq[1]);
302 for (i = 0; i < 30; i++) {
303 irq[i] = qdev_get_gpio_in(dev, i);
305 nmi[0] = qdev_get_gpio_in(dev, 30);
306 nmi[1] = qdev_get_gpio_in(dev, 31);
308 etraxfs_dmac = etraxfs_dmac_init(0x30000000, 10);
309 for (i = 0; i < 10; i++) {
310 /* On ETRAX, odd numbered channels are inputs. */
311 etraxfs_dmac_connect(etraxfs_dmac, i, irq + 7 + i, i & 1);
314 /* Add the two ethernet blocks. */
315 eth[0] = etraxfs_eth_init(&nd_table[0], 0x30034000, 1);
317 eth[1] = etraxfs_eth_init(&nd_table[1], 0x30036000, 2);
319 /* The DMA Connector block is missing, hardwire things for now. */
320 etraxfs_dmac_connect_client(etraxfs_dmac, 0, eth[0]);
321 etraxfs_dmac_connect_client(etraxfs_dmac, 1, eth[0] + 1);
323 etraxfs_dmac_connect_client(etraxfs_dmac, 6, eth[1]);
324 etraxfs_dmac_connect_client(etraxfs_dmac, 7, eth[1] + 1);
328 sysbus_create_varargs("etraxfs,timer", 0x3001e000, irq[0x1b], nmi[1], NULL);
329 sysbus_create_varargs("etraxfs,timer", 0x3005e000, irq[0x1b], nmi[1], NULL);
331 for (i = 0; i < 4; i++) {
332 sysbus_create_simple("etraxfs,serial", 0x30026000 + i * 0x2000,
336 if (!kernel_filename) {
337 fprintf(stderr, "Kernel image must be specified\n");
341 li.image_filename = kernel_filename;
342 li.cmdline = kernel_cmdline;
343 cris_load_image(env, &li);
346 static QEMUMachine axisdev88_machine = {
347 .name = "axis-dev88",
348 .desc = "AXIS devboard 88",
349 .init = axisdev88_init,
352 static void axisdev88_machine_init(void)
354 qemu_register_machine(&axisdev88_machine);
357 machine_init(axisdev88_machine_init);