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
32 #include "cris-boot.h"
34 #include "exec/address-spaces.h"
49 static struct nand_state_t nand_state;
50 static uint64_t nand_read(void *opaque, hwaddr addr, unsigned size)
52 struct nand_state_t *s = opaque;
56 r = nand_getio(s->nand);
57 nand_getpins(s->nand, &rdy);
60 DNAND(printf("%s addr=%x r=%x\n", __func__, addr, r));
65 nand_write(void *opaque, hwaddr addr, uint64_t value,
68 struct nand_state_t *s = opaque;
71 DNAND(printf("%s addr=%x v=%x\n", __func__, addr, (unsigned)value));
72 nand_setpins(s->nand, s->cle, s->ale, s->ce, 1, 0);
73 nand_setio(s->nand, value);
74 nand_getpins(s->nand, &rdy);
78 static const MemoryRegionOps nand_ops = {
81 .endianness = DEVICE_NATIVE_ENDIAN,
86 unsigned int shiftreg;
95 static void tempsensor_clkedge(struct tempsensor_t *s,
96 unsigned int clk, unsigned int data_in)
98 D(printf("%s clk=%d state=%d sr=%x\n", __func__,
99 clk, s->state, s->shiftreg));
106 /* Output reg is clocked at negedge. */
128 /* Indata is sampled at posedge. */
132 s->shiftreg |= data_in & 1;
134 D(printf("%s cfgreg=%x\n", __func__, s->shiftreg));
135 s->regs[0] = s->shiftreg;
139 if ((s->regs[0] & 0xff) == 0) {
140 /* 25 degrees celcius. */
141 s->shiftreg = 0x0b9f;
142 } else if ((s->regs[0] & 0xff) == 0xff) {
143 /* Sensor ID, 0x8100 LM70. */
144 s->shiftreg = 0x8100;
146 printf("Invalid tempsens state %x\n", s->regs[0]);
154 #define RW_PA_DOUT 0x00
155 #define R_PA_DIN 0x01
156 #define RW_PA_OE 0x02
157 #define RW_PD_DOUT 0x10
158 #define R_PD_DIN 0x11
159 #define RW_PD_OE 0x12
161 static struct gpio_state_t
164 struct nand_state_t *nand;
165 struct tempsensor_t tempsensor;
166 uint32_t regs[0x5c / 4];
169 static uint64_t gpio_read(void *opaque, hwaddr addr, unsigned size)
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_write(void *opaque, hwaddr addr, uint64_t value,
201 struct gpio_state_t *s = opaque;
202 D(printf("%s %x=%x\n", __func__, addr, (unsigned)value));
208 /* Decode nand pins. */
209 s->nand->ale = !!(value & (1 << 6));
210 s->nand->cle = !!(value & (1 << 5));
211 s->nand->ce = !!(value & (1 << 4));
213 s->regs[addr] = value;
217 /* Temp sensor clk. */
218 if ((s->regs[addr] ^ value) & 2)
219 tempsensor_clkedge(&s->tempsensor, !!(value & 2),
221 s->regs[addr] = value;
225 s->regs[addr] = value;
230 static const MemoryRegionOps gpio_ops = {
233 .endianness = DEVICE_NATIVE_ENDIAN,
235 .min_access_size = 4,
236 .max_access_size = 4,
240 #define INTMEM_SIZE (128 * 1024)
242 static struct cris_load_info li;
245 void axisdev88_init(QEMUMachineInitArgs *args)
247 ram_addr_t ram_size = args->ram_size;
248 const char *cpu_model = args->cpu_model;
249 const char *kernel_filename = args->kernel_filename;
250 const char *kernel_cmdline = args->kernel_cmdline;
256 qemu_irq irq[30], nmi[2], *cpu_irq;
258 struct etraxfs_dma_client *dma_eth;
260 MemoryRegion *address_space_mem = get_system_memory();
261 MemoryRegion *phys_ram = g_new(MemoryRegion, 1);
262 MemoryRegion *phys_intmem = g_new(MemoryRegion, 1);
265 if (cpu_model == NULL) {
266 cpu_model = "crisv32";
268 cpu = cpu_cris_init(cpu_model);
272 memory_region_init_ram(phys_ram, "axisdev88.ram", ram_size);
273 vmstate_register_ram_global(phys_ram);
274 memory_region_add_subregion(address_space_mem, 0x40000000, phys_ram);
276 /* The ETRAX-FS has 128Kb on chip ram, the docs refer to it as the
278 memory_region_init_ram(phys_intmem, "axisdev88.chipram", INTMEM_SIZE);
279 vmstate_register_ram_global(phys_intmem);
280 memory_region_add_subregion(address_space_mem, 0x38000000, phys_intmem);
282 /* Attach a NAND flash to CS1. */
283 nand = drive_get(IF_MTD, 0, 0);
284 nand_state.nand = nand_init(nand ? nand->bdrv : NULL,
285 NAND_MFR_STMICRO, 0x39);
286 memory_region_init_io(&nand_state.iomem, &nand_ops, &nand_state,
288 memory_region_add_subregion(address_space_mem, 0x10000000,
291 gpio_state.nand = &nand_state;
292 memory_region_init_io(&gpio_state.iomem, &gpio_ops, &gpio_state,
294 memory_region_add_subregion(address_space_mem, 0x3001a000,
298 cpu_irq = cris_pic_init_cpu(env);
299 dev = qdev_create(NULL, "etraxfs,pic");
300 /* FIXME: Is there a proper way to signal vectors to the CPU core? */
301 qdev_prop_set_ptr(dev, "interrupt_vector", &env->interrupt_vector);
302 qdev_init_nofail(dev);
303 s = sysbus_from_qdev(dev);
304 sysbus_mmio_map(s, 0, 0x3001c000);
305 sysbus_connect_irq(s, 0, cpu_irq[0]);
306 sysbus_connect_irq(s, 1, cpu_irq[1]);
307 for (i = 0; i < 30; i++) {
308 irq[i] = qdev_get_gpio_in(dev, i);
310 nmi[0] = qdev_get_gpio_in(dev, 30);
311 nmi[1] = qdev_get_gpio_in(dev, 31);
313 etraxfs_dmac = etraxfs_dmac_init(0x30000000, 10);
314 for (i = 0; i < 10; i++) {
315 /* On ETRAX, odd numbered channels are inputs. */
316 etraxfs_dmac_connect(etraxfs_dmac, i, irq + 7 + i, i & 1);
319 /* Add the two ethernet blocks. */
320 dma_eth = g_malloc0(sizeof dma_eth[0] * 4); /* Allocate 4 channels. */
321 etraxfs_eth_init(&nd_table[0], 0x30034000, 1, &dma_eth[0], &dma_eth[1]);
323 etraxfs_eth_init(&nd_table[1], 0x30036000, 2, &dma_eth[2], &dma_eth[3]);
326 /* The DMA Connector block is missing, hardwire things for now. */
327 etraxfs_dmac_connect_client(etraxfs_dmac, 0, &dma_eth[0]);
328 etraxfs_dmac_connect_client(etraxfs_dmac, 1, &dma_eth[1]);
330 etraxfs_dmac_connect_client(etraxfs_dmac, 6, &dma_eth[2]);
331 etraxfs_dmac_connect_client(etraxfs_dmac, 7, &dma_eth[3]);
335 sysbus_create_varargs("etraxfs,timer", 0x3001e000, irq[0x1b], nmi[1], NULL);
336 sysbus_create_varargs("etraxfs,timer", 0x3005e000, irq[0x1b], nmi[1], NULL);
338 for (i = 0; i < 4; i++) {
339 sysbus_create_simple("etraxfs,serial", 0x30026000 + i * 0x2000,
343 if (!kernel_filename) {
344 fprintf(stderr, "Kernel image must be specified\n");
348 li.image_filename = kernel_filename;
349 li.cmdline = kernel_cmdline;
350 cris_load_image(cpu, &li);
353 static QEMUMachine axisdev88_machine = {
354 .name = "axis-dev88",
355 .desc = "AXIS devboard 88",
356 .init = axisdev88_init,
360 static void axisdev88_machine_init(void)
362 qemu_register_machine(&axisdev88_machine);
365 machine_init(axisdev88_machine_init);