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1/*
2 * Calxeda Highbank SoC emulation
3 *
4 * Copyright (c) 2010-2012 Calxeda
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2 or later, as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * more details.
14 *
15 * You should have received a copy of the GNU General Public License along with
16 * this program. If not, see <http://www.gnu.org/licenses/>.
17 *
18 */
19
20#include "sysbus.h"
21#include "arm-misc.h"
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22#include "devices.h"
23#include "loader.h"
1422e32d 24#include "net/net.h"
9c17d615 25#include "sysemu/sysemu.h"
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26#include "boards.h"
27#include "sysbus.h"
9c17d615 28#include "sysemu/blockdev.h"
022c62cb 29#include "exec/address-spaces.h"
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30
31#define SMP_BOOT_ADDR 0x100
32#define SMP_BOOT_REG 0x40
33#define GIC_BASE_ADDR 0xfff10000
34
35#define NIRQ_GIC 160
36
37/* Board init. */
2488514c 38
9543b0cd 39static void hb_write_secondary(ARMCPU *cpu, const struct arm_boot_info *info)
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40{
41 int n;
42 uint32_t smpboot[] = {
43 0xee100fb0, /* mrc p15, 0, r0, c0, c0, 5 - read current core id */
44 0xe210000f, /* ands r0, r0, #0x0f */
45 0xe3a03040, /* mov r3, #0x40 - jump address is 0x40 + 0x10 * core id */
46 0xe0830200, /* add r0, r3, r0, lsl #4 */
bf471f79 47 0xe59f2024, /* ldr r2, privbase */
2488514c 48 0xe3a01001, /* mov r1, #1 */
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49 0xe5821100, /* str r1, [r2, #256] - set GICC_CTLR.Enable */
50 0xe3a010ff, /* mov r1, #0xff */
51 0xe5821104, /* str r1, [r2, #260] - set GICC_PMR.Priority to 0xff */
52 0xf57ff04f, /* dsb */
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53 0xe320f003, /* wfi */
54 0xe5901000, /* ldr r1, [r0] */
55 0xe1110001, /* tst r1, r1 */
56 0x0afffffb, /* beq <wfi> */
57 0xe12fff11, /* bx r1 */
58 GIC_BASE_ADDR /* privbase: gic address. */
59 };
60 for (n = 0; n < ARRAY_SIZE(smpboot); n++) {
61 smpboot[n] = tswap32(smpboot[n]);
62 }
63 rom_add_blob_fixed("smpboot", smpboot, sizeof(smpboot), SMP_BOOT_ADDR);
64}
65
5d309320 66static void hb_reset_secondary(ARMCPU *cpu, const struct arm_boot_info *info)
2488514c 67{
5d309320
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68 CPUARMState *env = &cpu->env;
69
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70 switch (info->nb_cpus) {
71 case 4:
72 stl_phys_notdirty(SMP_BOOT_REG + 0x30, 0);
73 case 3:
74 stl_phys_notdirty(SMP_BOOT_REG + 0x20, 0);
75 case 2:
76 stl_phys_notdirty(SMP_BOOT_REG + 0x10, 0);
77 env->regs[15] = SMP_BOOT_ADDR;
78 break;
79 default:
80 break;
81 }
82}
83
84#define NUM_REGS 0x200
a8170e5e 85static void hb_regs_write(void *opaque, hwaddr offset,
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86 uint64_t value, unsigned size)
87{
88 uint32_t *regs = opaque;
89
90 if (offset == 0xf00) {
91 if (value == 1 || value == 2) {
92 qemu_system_reset_request();
93 } else if (value == 3) {
94 qemu_system_shutdown_request();
95 }
96 }
97
98 regs[offset/4] = value;
99}
100
a8170e5e 101static uint64_t hb_regs_read(void *opaque, hwaddr offset,
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102 unsigned size)
103{
104 uint32_t *regs = opaque;
105 uint32_t value = regs[offset/4];
106
107 if ((offset == 0x100) || (offset == 0x108) || (offset == 0x10C)) {
108 value |= 0x30000000;
109 }
110
111 return value;
112}
113
114static const MemoryRegionOps hb_mem_ops = {
115 .read = hb_regs_read,
116 .write = hb_regs_write,
117 .endianness = DEVICE_NATIVE_ENDIAN,
118};
119
120typedef struct {
121 SysBusDevice busdev;
122 MemoryRegion *iomem;
123 uint32_t regs[NUM_REGS];
124} HighbankRegsState;
125
126static VMStateDescription vmstate_highbank_regs = {
127 .name = "highbank-regs",
128 .version_id = 0,
129 .minimum_version_id = 0,
130 .minimum_version_id_old = 0,
131 .fields = (VMStateField[]) {
132 VMSTATE_UINT32_ARRAY(regs, HighbankRegsState, NUM_REGS),
133 VMSTATE_END_OF_LIST(),
134 },
135};
136
137static void highbank_regs_reset(DeviceState *dev)
138{
139 SysBusDevice *sys_dev = sysbus_from_qdev(dev);
140 HighbankRegsState *s = FROM_SYSBUS(HighbankRegsState, sys_dev);
141
142 s->regs[0x40] = 0x05F20121;
143 s->regs[0x41] = 0x2;
144 s->regs[0x42] = 0x05F30121;
145 s->regs[0x43] = 0x05F40121;
146}
147
148static int highbank_regs_init(SysBusDevice *dev)
149{
150 HighbankRegsState *s = FROM_SYSBUS(HighbankRegsState, dev);
151
152 s->iomem = g_new(MemoryRegion, 1);
153 memory_region_init_io(s->iomem, &hb_mem_ops, s->regs, "highbank_regs",
154 0x1000);
155 sysbus_init_mmio(dev, s->iomem);
156
157 return 0;
158}
159
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160static void highbank_regs_class_init(ObjectClass *klass, void *data)
161{
162 SysBusDeviceClass *sbc = SYS_BUS_DEVICE_CLASS(klass);
39bffca2 163 DeviceClass *dc = DEVICE_CLASS(klass);
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164
165 sbc->init = highbank_regs_init;
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166 dc->desc = "Calxeda Highbank registers";
167 dc->vmsd = &vmstate_highbank_regs;
168 dc->reset = highbank_regs_reset;
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169}
170
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171static TypeInfo highbank_regs_info = {
172 .name = "highbank-regs",
173 .parent = TYPE_SYS_BUS_DEVICE,
174 .instance_size = sizeof(HighbankRegsState),
175 .class_init = highbank_regs_class_init,
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176};
177
83f7d43a 178static void highbank_regs_register_types(void)
2488514c 179{
39bffca2 180 type_register_static(&highbank_regs_info);
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181}
182
83f7d43a 183type_init(highbank_regs_register_types)
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184
185static struct arm_boot_info highbank_binfo;
186
187/* ram_size must be set to match the upper bound of memory in the
188 * device tree (linux/arch/arm/boot/dts/highbank.dts), which is
189 * normally 0xff900000 or -m 4089. When running this board on a
190 * 32-bit host, set the reg value of memory to 0xf7ff00000 in the
191 * device tree and pass -m 2047 to QEMU.
192 */
5f072e1f 193static void highbank_init(QEMUMachineInitArgs *args)
2488514c 194{
5f072e1f
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195 ram_addr_t ram_size = args->ram_size;
196 const char *cpu_model = args->cpu_model;
197 const char *kernel_filename = args->kernel_filename;
198 const char *kernel_cmdline = args->kernel_cmdline;
199 const char *initrd_filename = args->initrd_filename;
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200 DeviceState *dev;
201 SysBusDevice *busdev;
202 qemu_irq *irqp;
203 qemu_irq pic[128];
204 int n;
205 qemu_irq cpu_irq[4];
206 MemoryRegion *sysram;
207 MemoryRegion *dram;
208 MemoryRegion *sysmem;
209 char *sysboot_filename;
210
211 if (!cpu_model) {
212 cpu_model = "cortex-a9";
213 }
214
215 for (n = 0; n < smp_cpus; n++) {
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216 ARMCPU *cpu;
217 cpu = cpu_arm_init(cpu_model);
218 if (cpu == NULL) {
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219 fprintf(stderr, "Unable to find CPU definition\n");
220 exit(1);
221 }
4bd74661 222
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223 /* This will become a QOM property eventually */
224 cpu->reset_cbar = GIC_BASE_ADDR;
4bd74661 225 irqp = arm_pic_init_cpu(cpu);
2488514c 226 cpu_irq[n] = irqp[ARM_PIC_CPU_IRQ];
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227 }
228
229 sysmem = get_system_memory();
230 dram = g_new(MemoryRegion, 1);
231 memory_region_init_ram(dram, "highbank.dram", ram_size);
232 /* SDRAM at address zero. */
233 memory_region_add_subregion(sysmem, 0, dram);
234
235 sysram = g_new(MemoryRegion, 1);
236 memory_region_init_ram(sysram, "highbank.sysram", 0x8000);
237 memory_region_add_subregion(sysmem, 0xfff88000, sysram);
238 if (bios_name != NULL) {
239 sysboot_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
240 if (sysboot_filename != NULL) {
241 uint32_t filesize = get_image_size(sysboot_filename);
242 if (load_image_targphys("sysram.bin", 0xfff88000, filesize) < 0) {
243 hw_error("Unable to load %s\n", bios_name);
244 }
245 } else {
246 hw_error("Unable to find %s\n", bios_name);
247 }
248 }
249
250 dev = qdev_create(NULL, "a9mpcore_priv");
251 qdev_prop_set_uint32(dev, "num-cpu", smp_cpus);
252 qdev_prop_set_uint32(dev, "num-irq", NIRQ_GIC);
253 qdev_init_nofail(dev);
254 busdev = sysbus_from_qdev(dev);
255 sysbus_mmio_map(busdev, 0, GIC_BASE_ADDR);
256 for (n = 0; n < smp_cpus; n++) {
257 sysbus_connect_irq(busdev, n, cpu_irq[n]);
258 }
259
260 for (n = 0; n < 128; n++) {
261 pic[n] = qdev_get_gpio_in(dev, n);
262 }
263
264 dev = qdev_create(NULL, "l2x0");
265 qdev_init_nofail(dev);
266 busdev = sysbus_from_qdev(dev);
267 sysbus_mmio_map(busdev, 0, 0xfff12000);
268
269 dev = qdev_create(NULL, "sp804");
270 qdev_prop_set_uint32(dev, "freq0", 150000000);
271 qdev_prop_set_uint32(dev, "freq1", 150000000);
272 qdev_init_nofail(dev);
273 busdev = sysbus_from_qdev(dev);
274 sysbus_mmio_map(busdev, 0, 0xfff34000);
275 sysbus_connect_irq(busdev, 0, pic[18]);
276 sysbus_create_simple("pl011", 0xfff36000, pic[20]);
277
278 dev = qdev_create(NULL, "highbank-regs");
279 qdev_init_nofail(dev);
280 busdev = sysbus_from_qdev(dev);
281 sysbus_mmio_map(busdev, 0, 0xfff3c000);
282
283 sysbus_create_simple("pl061", 0xfff30000, pic[14]);
284 sysbus_create_simple("pl061", 0xfff31000, pic[15]);
285 sysbus_create_simple("pl061", 0xfff32000, pic[16]);
286 sysbus_create_simple("pl061", 0xfff33000, pic[17]);
287 sysbus_create_simple("pl031", 0xfff35000, pic[19]);
288 sysbus_create_simple("pl022", 0xfff39000, pic[23]);
289
290 sysbus_create_simple("sysbus-ahci", 0xffe08000, pic[83]);
291
a005d073 292 if (nd_table[0].used) {
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293 qemu_check_nic_model(&nd_table[0], "xgmac");
294 dev = qdev_create(NULL, "xgmac");
295 qdev_set_nic_properties(dev, &nd_table[0]);
296 qdev_init_nofail(dev);
297 sysbus_mmio_map(sysbus_from_qdev(dev), 0, 0xfff50000);
298 sysbus_connect_irq(sysbus_from_qdev(dev), 0, pic[77]);
299 sysbus_connect_irq(sysbus_from_qdev(dev), 1, pic[78]);
300 sysbus_connect_irq(sysbus_from_qdev(dev), 2, pic[79]);
301
302 qemu_check_nic_model(&nd_table[1], "xgmac");
303 dev = qdev_create(NULL, "xgmac");
304 qdev_set_nic_properties(dev, &nd_table[1]);
305 qdev_init_nofail(dev);
306 sysbus_mmio_map(sysbus_from_qdev(dev), 0, 0xfff51000);
307 sysbus_connect_irq(sysbus_from_qdev(dev), 0, pic[80]);
308 sysbus_connect_irq(sysbus_from_qdev(dev), 1, pic[81]);
309 sysbus_connect_irq(sysbus_from_qdev(dev), 2, pic[82]);
310 }
311
312 highbank_binfo.ram_size = ram_size;
313 highbank_binfo.kernel_filename = kernel_filename;
314 highbank_binfo.kernel_cmdline = kernel_cmdline;
315 highbank_binfo.initrd_filename = initrd_filename;
316 /* highbank requires a dtb in order to boot, and the dtb will override
317 * the board ID. The following value is ignored, so set it to -1 to be
318 * clear that the value is meaningless.
319 */
320 highbank_binfo.board_id = -1;
321 highbank_binfo.nb_cpus = smp_cpus;
322 highbank_binfo.loader_start = 0;
323 highbank_binfo.write_secondary_boot = hb_write_secondary;
324 highbank_binfo.secondary_cpu_reset_hook = hb_reset_secondary;
3aaa8dfa 325 arm_load_kernel(arm_env_get_cpu(first_cpu), &highbank_binfo);
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326}
327
328static QEMUMachine highbank_machine = {
329 .name = "highbank",
330 .desc = "Calxeda Highbank (ECX-1000)",
331 .init = highbank_init,
2d0d2837 332 .block_default_type = IF_SCSI,
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333 .max_cpus = 4,
334};
335
336static void highbank_machine_init(void)
337{
338 qemu_register_machine(&highbank_machine);
339}
340
341machine_init(highbank_machine_init);