target/mips: Remove XBurst Media eXtension Unit dead code
[qemu/ar7.git] / hw / lm32 / milkymist.c
blob72d1326531a9d12fba8a9eae35b2f46122893799
1 /*
2 * QEMU model for the Milkymist board.
4 * Copyright (c) 2010 Michael Walle <michael@walle.cc>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
20 #include "qemu/osdep.h"
21 #include "qemu/units.h"
22 #include "qemu/error-report.h"
23 #include "qemu-common.h"
24 #include "qemu/datadir.h"
25 #include "cpu.h"
26 #include "hw/sysbus.h"
27 #include "hw/irq.h"
28 #include "hw/block/flash.h"
29 #include "sysemu/sysemu.h"
30 #include "sysemu/qtest.h"
31 #include "sysemu/reset.h"
32 #include "hw/boards.h"
33 #include "hw/loader.h"
34 #include "hw/qdev-properties.h"
35 #include "elf.h"
36 #include "milkymist-hw.h"
37 #include "hw/display/milkymist_tmu2.h"
38 #include "hw/sd/sd.h"
39 #include "lm32.h"
40 #include "exec/address-spaces.h"
41 #include "qemu/cutils.h"
43 #define BIOS_FILENAME "mmone-bios.bin"
44 #define BIOS_OFFSET 0x00860000
45 #define BIOS_SIZE (512 * KiB)
46 #define KERNEL_LOAD_ADDR 0x40000000
48 typedef struct {
49 LM32CPU *cpu;
50 hwaddr bootstrap_pc;
51 hwaddr flash_base;
52 hwaddr initrd_base;
53 size_t initrd_size;
54 hwaddr cmdline_base;
55 } ResetInfo;
57 static void cpu_irq_handler(void *opaque, int irq, int level)
59 LM32CPU *cpu = opaque;
60 CPUState *cs = CPU(cpu);
62 if (level) {
63 cpu_interrupt(cs, CPU_INTERRUPT_HARD);
64 } else {
65 cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);
69 static void main_cpu_reset(void *opaque)
71 ResetInfo *reset_info = opaque;
72 CPULM32State *env = &reset_info->cpu->env;
74 cpu_reset(CPU(reset_info->cpu));
76 /* init defaults */
77 env->pc = reset_info->bootstrap_pc;
78 env->regs[R_R1] = reset_info->cmdline_base;
79 env->regs[R_R2] = reset_info->initrd_base;
80 env->regs[R_R3] = reset_info->initrd_base + reset_info->initrd_size;
81 env->eba = reset_info->flash_base;
82 env->deba = reset_info->flash_base;
85 static DeviceState *milkymist_memcard_create(hwaddr base)
87 DeviceState *dev;
88 DriveInfo *dinfo;
90 dev = qdev_new("milkymist-memcard");
91 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
92 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, base);
94 dinfo = drive_get_next(IF_SD);
95 if (dinfo) {
96 DeviceState *card;
98 card = qdev_new(TYPE_SD_CARD);
99 qdev_prop_set_drive_err(card, "drive", blk_by_legacy_dinfo(dinfo),
100 &error_fatal);
101 qdev_realize_and_unref(card, qdev_get_child_bus(dev, "sd-bus"),
102 &error_fatal);
105 return dev;
108 static void
109 milkymist_init(MachineState *machine)
111 MachineClass *mc = MACHINE_GET_CLASS(machine);
112 const char *bios_name = machine->firmware ?: BIOS_FILENAME;
113 const char *kernel_filename = machine->kernel_filename;
114 const char *kernel_cmdline = machine->kernel_cmdline;
115 const char *initrd_filename = machine->initrd_filename;
116 LM32CPU *cpu;
117 CPULM32State *env;
118 int kernel_size;
119 DriveInfo *dinfo;
120 MemoryRegion *address_space_mem = get_system_memory();
121 qemu_irq irq[32];
122 int i;
123 char *bios_filename;
124 ResetInfo *reset_info;
126 if (machine->ram_size != mc->default_ram_size) {
127 char *sz = size_to_str(mc->default_ram_size);
128 error_report("Invalid RAM size, should be %s", sz);
129 g_free(sz);
130 exit(EXIT_FAILURE);
133 /* memory map */
134 hwaddr flash_base = 0x00000000;
135 size_t flash_sector_size = 128 * KiB;
136 size_t flash_size = 32 * MiB;
137 hwaddr sdram_base = 0x40000000;
139 hwaddr initrd_base = sdram_base + 0x1002000;
140 hwaddr cmdline_base = sdram_base + 0x1000000;
141 size_t initrd_max = machine->ram_size - 0x1002000;
143 reset_info = g_malloc0(sizeof(ResetInfo));
145 cpu = LM32_CPU(cpu_create(machine->cpu_type));
147 env = &cpu->env;
148 reset_info->cpu = cpu;
150 cpu_lm32_set_phys_msb_ignore(env, 1);
152 memory_region_add_subregion(address_space_mem, sdram_base, machine->ram);
154 dinfo = drive_get(IF_PFLASH, 0, 0);
155 /* Numonyx JS28F256J3F105 */
156 pflash_cfi01_register(flash_base, "milkymist.flash", flash_size,
157 dinfo ? blk_by_legacy_dinfo(dinfo) : NULL,
158 flash_sector_size, 2, 0x00, 0x89, 0x00, 0x1d, 1);
160 /* create irq lines */
161 env->pic_state = lm32_pic_init(qemu_allocate_irq(cpu_irq_handler, cpu, 0));
162 for (i = 0; i < 32; i++) {
163 irq[i] = qdev_get_gpio_in(env->pic_state, i);
166 /* load bios rom */
167 bios_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
169 if (bios_filename) {
170 if (load_image_targphys(bios_filename, BIOS_OFFSET, BIOS_SIZE) < 0) {
171 error_report("could not load bios '%s'", bios_filename);
172 exit(1);
176 reset_info->bootstrap_pc = BIOS_OFFSET;
178 /* if no kernel is given no valid bios rom is a fatal error */
179 if (!kernel_filename && !dinfo && !bios_filename && !qtest_enabled()) {
180 error_report("could not load Milkymist One bios '%s'", bios_name);
181 exit(1);
183 g_free(bios_filename);
185 milkymist_uart_create(0x60000000, irq[0], serial_hd(0));
186 milkymist_sysctl_create(0x60001000, irq[1], irq[2], irq[3],
187 80000000, 0x10014d31, 0x0000041f, 0x00000001);
188 milkymist_hpdmc_create(0x60002000);
189 milkymist_vgafb_create(0x60003000, 0x40000000, 0x0fffffff);
190 milkymist_memcard_create(0x60004000);
191 milkymist_ac97_create(0x60005000, irq[4], irq[5], irq[6], irq[7]);
192 milkymist_pfpu_create(0x60006000, irq[8]);
193 if (machine->enable_graphics) {
194 milkymist_tmu2_create(0x60007000, irq[9]);
196 milkymist_minimac2_create(0x60008000, 0x30000000, irq[10], irq[11]);
197 milkymist_softusb_create(0x6000f000, irq[15],
198 0x20000000, 0x1000, 0x20020000, 0x2000);
200 /* make sure juart isn't the first chardev */
201 env->juart_state = lm32_juart_init(serial_hd(1));
203 if (kernel_filename) {
204 uint64_t entry;
206 /* Boots a kernel elf binary. */
207 kernel_size = load_elf(kernel_filename, NULL, NULL, NULL,
208 &entry, NULL, NULL, NULL,
209 1, EM_LATTICEMICO32, 0, 0);
210 reset_info->bootstrap_pc = entry;
212 if (kernel_size < 0) {
213 kernel_size = load_image_targphys(kernel_filename, sdram_base,
214 machine->ram_size);
215 reset_info->bootstrap_pc = sdram_base;
218 if (kernel_size < 0) {
219 error_report("could not load kernel '%s'", kernel_filename);
220 exit(1);
224 if (kernel_cmdline && strlen(kernel_cmdline)) {
225 pstrcpy_targphys("cmdline", cmdline_base, TARGET_PAGE_SIZE,
226 kernel_cmdline);
227 reset_info->cmdline_base = (uint32_t)cmdline_base;
230 if (initrd_filename) {
231 size_t initrd_size;
232 initrd_size = load_image_targphys(initrd_filename, initrd_base,
233 initrd_max);
234 reset_info->initrd_base = (uint32_t)initrd_base;
235 reset_info->initrd_size = (uint32_t)initrd_size;
238 qemu_register_reset(main_cpu_reset, reset_info);
241 static void milkymist_machine_init(MachineClass *mc)
243 mc->desc = "Milkymist One";
244 mc->init = milkymist_init;
245 mc->default_cpu_type = LM32_CPU_TYPE_NAME("lm32-full");
246 mc->default_ram_size = 128 * MiB;
247 mc->default_ram_id = "milkymist.sdram";
250 DEFINE_MACHINE("milkymist", milkymist_machine_init)