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
25 #include "qemu/osdep.h"
26 #include "hw/sysbus.h"
28 #include "hw/block/flash.h"
29 #include "hw/boards.h"
30 #include "hw/cris/etraxfs.h"
31 #include "hw/loader.h"
34 #include "sysemu/block-backend.h"
35 #include "exec/address-spaces.h"
36 #include "sysemu/qtest.h"
51 static struct nand_state_t nand_state;
52 static uint64_t nand_read(void *opaque, hwaddr addr, unsigned size)
54 struct nand_state_t *s = opaque;
58 r = nand_getio(s->nand);
59 nand_getpins(s->nand, &rdy);
62 DNAND(printf("%s addr=%x r=%x\n", __func__, addr, r));
67 nand_write(void *opaque, hwaddr addr, uint64_t value,
70 struct nand_state_t *s = opaque;
73 DNAND(printf("%s addr=%x v=%x\n", __func__, addr, (unsigned)value));
74 nand_setpins(s->nand, s->cle, s->ale, s->ce, 1, 0);
75 nand_setio(s->nand, value);
76 nand_getpins(s->nand, &rdy);
80 static const MemoryRegionOps nand_ops = {
83 .endianness = DEVICE_NATIVE_ENDIAN,
88 unsigned int shiftreg;
97 static void tempsensor_clkedge(struct tempsensor_t *s,
98 unsigned int clk, unsigned int data_in)
100 D(printf("%s clk=%d state=%d sr=%x\n", __func__,
101 clk, s->state, s->shiftreg));
108 /* Output reg is clocked at negedge. */
130 /* Indata is sampled at posedge. */
134 s->shiftreg |= data_in & 1;
136 D(printf("%s cfgreg=%x\n", __func__, s->shiftreg));
137 s->regs[0] = s->shiftreg;
141 if ((s->regs[0] & 0xff) == 0) {
142 /* 25 degrees celsius. */
143 s->shiftreg = 0x0b9f;
144 } else if ((s->regs[0] & 0xff) == 0xff) {
145 /* Sensor ID, 0x8100 LM70. */
146 s->shiftreg = 0x8100;
148 printf("Invalid tempsens state %x\n", s->regs[0]);
156 #define RW_PA_DOUT 0x00
157 #define R_PA_DIN 0x01
158 #define RW_PA_OE 0x02
159 #define RW_PD_DOUT 0x10
160 #define R_PD_DIN 0x11
161 #define RW_PD_OE 0x12
163 static struct gpio_state_t
166 struct nand_state_t *nand;
167 struct tempsensor_t tempsensor;
168 uint32_t regs[0x5c / 4];
171 static uint64_t gpio_read(void *opaque, hwaddr addr, unsigned size)
173 struct gpio_state_t *s = opaque;
180 r = s->regs[RW_PA_DOUT] & s->regs[RW_PA_OE];
182 /* Encode pins from the nand. */
183 r |= s->nand->rdy << 7;
186 r = s->regs[RW_PD_DOUT] & s->regs[RW_PD_OE];
188 /* Encode temp sensor pins. */
189 r |= (!!(s->tempsensor.shiftreg & 0x10000)) << 4;
197 D(printf("%s %x=%x\n", __func__, addr, r));
200 static void gpio_write(void *opaque, hwaddr addr, uint64_t value,
203 struct gpio_state_t *s = opaque;
204 D(printf("%s %x=%x\n", __func__, addr, (unsigned)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 const MemoryRegionOps gpio_ops = {
235 .endianness = DEVICE_NATIVE_ENDIAN,
237 .min_access_size = 4,
238 .max_access_size = 4,
242 #define INTMEM_SIZE (128 * 1024)
244 static struct cris_load_info li;
247 void axisdev88_init(MachineState *machine)
249 ram_addr_t ram_size = machine->ram_size;
250 const char *cpu_model = machine->cpu_model;
251 const char *kernel_filename = machine->kernel_filename;
252 const char *kernel_cmdline = machine->kernel_cmdline;
258 qemu_irq irq[30], nmi[2];
260 struct etraxfs_dma_client *dma_eth;
262 MemoryRegion *address_space_mem = get_system_memory();
263 MemoryRegion *phys_ram = g_new(MemoryRegion, 1);
264 MemoryRegion *phys_intmem = g_new(MemoryRegion, 1);
267 if (cpu_model == NULL) {
268 cpu_model = "crisv32";
270 cpu = cpu_cris_init(cpu_model);
274 memory_region_allocate_system_memory(phys_ram, NULL, "axisdev88.ram",
276 memory_region_add_subregion(address_space_mem, 0x40000000, phys_ram);
278 /* The ETRAX-FS has 128Kb on chip ram, the docs refer to it as the
280 memory_region_init_ram(phys_intmem, NULL, "axisdev88.chipram", INTMEM_SIZE,
282 vmstate_register_ram_global(phys_intmem);
283 memory_region_add_subregion(address_space_mem, 0x38000000, phys_intmem);
285 /* Attach a NAND flash to CS1. */
286 nand = drive_get(IF_MTD, 0, 0);
287 nand_state.nand = nand_init(nand ? blk_by_legacy_dinfo(nand) : NULL,
288 NAND_MFR_STMICRO, 0x39);
289 memory_region_init_io(&nand_state.iomem, NULL, &nand_ops, &nand_state,
291 memory_region_add_subregion(address_space_mem, 0x10000000,
294 gpio_state.nand = &nand_state;
295 memory_region_init_io(&gpio_state.iomem, NULL, &gpio_ops, &gpio_state,
297 memory_region_add_subregion(address_space_mem, 0x3001a000,
301 dev = qdev_create(NULL, "etraxfs,pic");
302 /* FIXME: Is there a proper way to signal vectors to the CPU core? */
303 qdev_prop_set_ptr(dev, "interrupt_vector", &env->interrupt_vector);
304 qdev_init_nofail(dev);
305 s = SYS_BUS_DEVICE(dev);
306 sysbus_mmio_map(s, 0, 0x3001c000);
307 sysbus_connect_irq(s, 0, qdev_get_gpio_in(DEVICE(cpu), CRIS_CPU_IRQ));
308 sysbus_connect_irq(s, 1, qdev_get_gpio_in(DEVICE(cpu), CRIS_CPU_NMI));
309 for (i = 0; i < 30; i++) {
310 irq[i] = qdev_get_gpio_in(dev, i);
312 nmi[0] = qdev_get_gpio_in(dev, 30);
313 nmi[1] = qdev_get_gpio_in(dev, 31);
315 etraxfs_dmac = etraxfs_dmac_init(0x30000000, 10);
316 for (i = 0; i < 10; i++) {
317 /* On ETRAX, odd numbered channels are inputs. */
318 etraxfs_dmac_connect(etraxfs_dmac, i, irq + 7 + i, i & 1);
321 /* Add the two ethernet blocks. */
322 dma_eth = g_malloc0(sizeof dma_eth[0] * 4); /* Allocate 4 channels. */
323 etraxfs_eth_init(&nd_table[0], 0x30034000, 1, &dma_eth[0], &dma_eth[1]);
325 etraxfs_eth_init(&nd_table[1], 0x30036000, 2, &dma_eth[2], &dma_eth[3]);
328 /* The DMA Connector block is missing, hardwire things for now. */
329 etraxfs_dmac_connect_client(etraxfs_dmac, 0, &dma_eth[0]);
330 etraxfs_dmac_connect_client(etraxfs_dmac, 1, &dma_eth[1]);
332 etraxfs_dmac_connect_client(etraxfs_dmac, 6, &dma_eth[2]);
333 etraxfs_dmac_connect_client(etraxfs_dmac, 7, &dma_eth[3]);
337 sysbus_create_varargs("etraxfs,timer", 0x3001e000, irq[0x1b], nmi[1], NULL);
338 sysbus_create_varargs("etraxfs,timer", 0x3005e000, irq[0x1b], nmi[1], NULL);
340 for (i = 0; i < 4; i++) {
341 sysbus_create_simple("etraxfs,serial", 0x30026000 + i * 0x2000,
345 if (kernel_filename) {
346 li.image_filename = kernel_filename;
347 li.cmdline = kernel_cmdline;
348 cris_load_image(cpu, &li);
349 } else if (!qtest_enabled()) {
350 fprintf(stderr, "Kernel image must be specified\n");
355 static void axisdev88_machine_init(MachineClass *mc)
357 mc->desc = "AXIS devboard 88";
358 mc->init = axisdev88_init;
362 DEFINE_MACHINE("axis-dev88", axisdev88_machine_init)