Merge remote-tracking branch 'remotes/philmd/tags/pflash-20210511' into staging
[qemu.git] / hw / lm32 / milkymist.c
1 /*
2 * QEMU model for the Milkymist board.
3 *
4 * Copyright (c) 2010 Michael Walle <michael@walle.cc>
5 *
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.
10 *
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.
15 *
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/>.
18 */
19
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 "qemu/cutils.h"
41
42 #define BIOS_FILENAME "mmone-bios.bin"
43 #define BIOS_OFFSET 0x00860000
44 #define BIOS_SIZE (512 * KiB)
45 #define KERNEL_LOAD_ADDR 0x40000000
46
47 typedef struct {
48 LM32CPU *cpu;
49 hwaddr bootstrap_pc;
50 hwaddr flash_base;
51 hwaddr initrd_base;
52 size_t initrd_size;
53 hwaddr cmdline_base;
54 } ResetInfo;
55
56 static void cpu_irq_handler(void *opaque, int irq, int level)
57 {
58 LM32CPU *cpu = opaque;
59 CPUState *cs = CPU(cpu);
60
61 if (level) {
62 cpu_interrupt(cs, CPU_INTERRUPT_HARD);
63 } else {
64 cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);
65 }
66 }
67
68 static void main_cpu_reset(void *opaque)
69 {
70 ResetInfo *reset_info = opaque;
71 CPULM32State *env = &reset_info->cpu->env;
72
73 cpu_reset(CPU(reset_info->cpu));
74
75 /* init defaults */
76 env->pc = reset_info->bootstrap_pc;
77 env->regs[R_R1] = reset_info->cmdline_base;
78 env->regs[R_R2] = reset_info->initrd_base;
79 env->regs[R_R3] = reset_info->initrd_base + reset_info->initrd_size;
80 env->eba = reset_info->flash_base;
81 env->deba = reset_info->flash_base;
82 }
83
84 static DeviceState *milkymist_memcard_create(hwaddr base)
85 {
86 DeviceState *dev;
87 DriveInfo *dinfo;
88
89 dev = qdev_new("milkymist-memcard");
90 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
91 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, base);
92
93 dinfo = drive_get_next(IF_SD);
94 if (dinfo) {
95 DeviceState *card;
96
97 card = qdev_new(TYPE_SD_CARD);
98 qdev_prop_set_drive_err(card, "drive", blk_by_legacy_dinfo(dinfo),
99 &error_fatal);
100 qdev_realize_and_unref(card, qdev_get_child_bus(dev, "sd-bus"),
101 &error_fatal);
102 }
103
104 return dev;
105 }
106
107 static void
108 milkymist_init(MachineState *machine)
109 {
110 MachineClass *mc = MACHINE_GET_CLASS(machine);
111 const char *bios_name = machine->firmware ?: BIOS_FILENAME;
112 const char *kernel_filename = machine->kernel_filename;
113 const char *kernel_cmdline = machine->kernel_cmdline;
114 const char *initrd_filename = machine->initrd_filename;
115 LM32CPU *cpu;
116 CPULM32State *env;
117 int kernel_size;
118 DriveInfo *dinfo;
119 MemoryRegion *address_space_mem = get_system_memory();
120 qemu_irq irq[32];
121 int i;
122 char *bios_filename;
123 ResetInfo *reset_info;
124
125 if (machine->ram_size != mc->default_ram_size) {
126 char *sz = size_to_str(mc->default_ram_size);
127 error_report("Invalid RAM size, should be %s", sz);
128 g_free(sz);
129 exit(EXIT_FAILURE);
130 }
131
132 /* memory map */
133 hwaddr flash_base = 0x00000000;
134 size_t flash_sector_size = 128 * KiB;
135 size_t flash_size = 32 * MiB;
136 hwaddr sdram_base = 0x40000000;
137
138 hwaddr initrd_base = sdram_base + 0x1002000;
139 hwaddr cmdline_base = sdram_base + 0x1000000;
140 size_t initrd_max = machine->ram_size - 0x1002000;
141
142 reset_info = g_malloc0(sizeof(ResetInfo));
143
144 cpu = LM32_CPU(cpu_create(machine->cpu_type));
145
146 env = &cpu->env;
147 reset_info->cpu = cpu;
148
149 cpu_lm32_set_phys_msb_ignore(env, 1);
150
151 memory_region_add_subregion(address_space_mem, sdram_base, machine->ram);
152
153 dinfo = drive_get(IF_PFLASH, 0, 0);
154 /* Numonyx JS28F256J3F105 */
155 pflash_cfi01_register(flash_base, "milkymist.flash", flash_size,
156 dinfo ? blk_by_legacy_dinfo(dinfo) : NULL,
157 flash_sector_size, 2, 0x00, 0x89, 0x00, 0x1d, 1);
158
159 /* create irq lines */
160 env->pic_state = lm32_pic_init(qemu_allocate_irq(cpu_irq_handler, cpu, 0));
161 for (i = 0; i < 32; i++) {
162 irq[i] = qdev_get_gpio_in(env->pic_state, i);
163 }
164
165 /* load bios rom */
166 bios_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
167
168 if (bios_filename) {
169 if (load_image_targphys(bios_filename, BIOS_OFFSET, BIOS_SIZE) < 0) {
170 error_report("could not load bios '%s'", bios_filename);
171 exit(1);
172 }
173 }
174
175 reset_info->bootstrap_pc = BIOS_OFFSET;
176
177 /* if no kernel is given no valid bios rom is a fatal error */
178 if (!kernel_filename && !dinfo && !bios_filename && !qtest_enabled()) {
179 error_report("could not load Milkymist One bios '%s'", bios_name);
180 exit(1);
181 }
182 g_free(bios_filename);
183
184 milkymist_uart_create(0x60000000, irq[0], serial_hd(0));
185 milkymist_sysctl_create(0x60001000, irq[1], irq[2], irq[3],
186 80000000, 0x10014d31, 0x0000041f, 0x00000001);
187 milkymist_hpdmc_create(0x60002000);
188 milkymist_vgafb_create(0x60003000, 0x40000000, 0x0fffffff);
189 milkymist_memcard_create(0x60004000);
190 milkymist_ac97_create(0x60005000, irq[4], irq[5], irq[6], irq[7]);
191 milkymist_pfpu_create(0x60006000, irq[8]);
192 if (machine->enable_graphics) {
193 milkymist_tmu2_create(0x60007000, irq[9]);
194 }
195 milkymist_minimac2_create(0x60008000, 0x30000000, irq[10], irq[11]);
196 milkymist_softusb_create(0x6000f000, irq[15],
197 0x20000000, 0x1000, 0x20020000, 0x2000);
198
199 /* make sure juart isn't the first chardev */
200 env->juart_state = lm32_juart_init(serial_hd(1));
201
202 if (kernel_filename) {
203 uint64_t entry;
204
205 /* Boots a kernel elf binary. */
206 kernel_size = load_elf(kernel_filename, NULL, NULL, NULL,
207 &entry, NULL, NULL, NULL,
208 1, EM_LATTICEMICO32, 0, 0);
209 reset_info->bootstrap_pc = entry;
210
211 if (kernel_size < 0) {
212 kernel_size = load_image_targphys(kernel_filename, sdram_base,
213 machine->ram_size);
214 reset_info->bootstrap_pc = sdram_base;
215 }
216
217 if (kernel_size < 0) {
218 error_report("could not load kernel '%s'", kernel_filename);
219 exit(1);
220 }
221 }
222
223 if (kernel_cmdline && strlen(kernel_cmdline)) {
224 pstrcpy_targphys("cmdline", cmdline_base, TARGET_PAGE_SIZE,
225 kernel_cmdline);
226 reset_info->cmdline_base = (uint32_t)cmdline_base;
227 }
228
229 if (initrd_filename) {
230 size_t initrd_size;
231 initrd_size = load_image_targphys(initrd_filename, initrd_base,
232 initrd_max);
233 reset_info->initrd_base = (uint32_t)initrd_base;
234 reset_info->initrd_size = (uint32_t)initrd_size;
235 }
236
237 qemu_register_reset(main_cpu_reset, reset_info);
238 }
239
240 static void milkymist_machine_init(MachineClass *mc)
241 {
242 mc->desc = "Milkymist One";
243 mc->init = milkymist_init;
244 mc->default_cpu_type = LM32_CPU_TYPE_NAME("lm32-full");
245 mc->default_ram_size = 128 * MiB;
246 mc->default_ram_id = "milkymist.sdram";
247 }
248
249 DEFINE_MACHINE("milkymist", milkymist_machine_init)