2 * Motorola ColdFire MCF5208 SoC emulation.
4 * Copyright (c) 2007 CodeSourcery.
6 * This code is licensed under the GPL
8 #include "qemu/osdep.h"
9 #include "qapi/error.h"
10 #include "qemu-common.h"
13 #include "hw/m68k/mcf.h"
14 #include "qemu/timer.h"
15 #include "hw/ptimer.h"
16 #include "sysemu/sysemu.h"
17 #include "sysemu/qtest.h"
19 #include "hw/boards.h"
20 #include "hw/loader.h"
22 #include "exec/address-spaces.h"
24 #define SYS_FREQ 66000000
26 #define PCSR_EN 0x0001
27 #define PCSR_RLD 0x0002
28 #define PCSR_PIF 0x0004
29 #define PCSR_PIE 0x0008
30 #define PCSR_OVW 0x0010
31 #define PCSR_DBG 0x0020
32 #define PCSR_DOZE 0x0040
33 #define PCSR_PRE_SHIFT 8
34 #define PCSR_PRE_MASK 0x0f00
45 static void m5208_timer_update(m5208_timer_state *s)
47 if ((s->pcsr & (PCSR_PIE | PCSR_PIF)) == (PCSR_PIE | PCSR_PIF))
48 qemu_irq_raise(s->irq);
50 qemu_irq_lower(s->irq);
53 static void m5208_timer_write(void *opaque, hwaddr offset,
54 uint64_t value, unsigned size)
56 m5208_timer_state *s = (m5208_timer_state *)opaque;
61 /* The PIF bit is set-to-clear. */
62 if (value & PCSR_PIF) {
66 /* Avoid frobbing the timer if we're just twiddling IRQ bits. */
67 if (((s->pcsr ^ value) & ~PCSR_PIE) == 0) {
69 m5208_timer_update(s);
73 if (s->pcsr & PCSR_EN)
74 ptimer_stop(s->timer);
78 prescale = 1 << ((s->pcsr & PCSR_PRE_MASK) >> PCSR_PRE_SHIFT);
79 ptimer_set_freq(s->timer, (SYS_FREQ / 2) / prescale);
80 if (s->pcsr & PCSR_RLD)
84 ptimer_set_limit(s->timer, limit, 0);
86 if (s->pcsr & PCSR_EN)
87 ptimer_run(s->timer, 0);
92 if ((s->pcsr & PCSR_RLD) == 0) {
93 if (s->pcsr & PCSR_OVW)
94 ptimer_set_count(s->timer, value);
96 ptimer_set_limit(s->timer, value, s->pcsr & PCSR_OVW);
102 hw_error("m5208_timer_write: Bad offset 0x%x\n", (int)offset);
105 m5208_timer_update(s);
108 static void m5208_timer_trigger(void *opaque)
110 m5208_timer_state *s = (m5208_timer_state *)opaque;
112 m5208_timer_update(s);
115 static uint64_t m5208_timer_read(void *opaque, hwaddr addr,
118 m5208_timer_state *s = (m5208_timer_state *)opaque;
125 return ptimer_get_count(s->timer);
127 hw_error("m5208_timer_read: Bad offset 0x%x\n", (int)addr);
132 static const MemoryRegionOps m5208_timer_ops = {
133 .read = m5208_timer_read,
134 .write = m5208_timer_write,
135 .endianness = DEVICE_NATIVE_ENDIAN,
138 static uint64_t m5208_sys_read(void *opaque, hwaddr addr,
142 case 0x110: /* SDCS0 */
145 for (n = 0; n < 32; n++) {
146 if (ram_size < (2u << n))
149 return (n - 1) | 0x40000000;
151 case 0x114: /* SDCS1 */
155 hw_error("m5208_sys_read: Bad offset 0x%x\n", (int)addr);
160 static void m5208_sys_write(void *opaque, hwaddr addr,
161 uint64_t value, unsigned size)
163 hw_error("m5208_sys_write: Bad offset 0x%x\n", (int)addr);
166 static const MemoryRegionOps m5208_sys_ops = {
167 .read = m5208_sys_read,
168 .write = m5208_sys_write,
169 .endianness = DEVICE_NATIVE_ENDIAN,
172 static void mcf5208_sys_init(MemoryRegion *address_space, qemu_irq *pic)
174 MemoryRegion *iomem = g_new(MemoryRegion, 1);
175 m5208_timer_state *s;
180 memory_region_init_io(iomem, NULL, &m5208_sys_ops, NULL, "m5208-sys", 0x00004000);
181 memory_region_add_subregion(address_space, 0xfc0a8000, iomem);
183 for (i = 0; i < 2; i++) {
184 s = (m5208_timer_state *)g_malloc0(sizeof(m5208_timer_state));
185 bh = qemu_bh_new(m5208_timer_trigger, s);
186 s->timer = ptimer_init(bh, PTIMER_POLICY_DEFAULT);
187 memory_region_init_io(&s->iomem, NULL, &m5208_timer_ops, s,
188 "m5208-timer", 0x00004000);
189 memory_region_add_subregion(address_space, 0xfc080000 + 0x4000 * i,
195 static void mcf5208evb_init(MachineState *machine)
197 ram_addr_t ram_size = machine->ram_size;
198 const char *cpu_model = machine->cpu_model;
199 const char *kernel_filename = machine->kernel_filename;
206 MemoryRegion *address_space_mem = get_system_memory();
207 MemoryRegion *ram = g_new(MemoryRegion, 1);
208 MemoryRegion *sram = g_new(MemoryRegion, 1);
213 cpu = cpu_m68k_init(cpu_model);
215 fprintf(stderr, "Unable to find m68k CPU definition\n");
220 /* Initialize CPU registers. */
222 /* TODO: Configure BARs. */
224 /* DRAM at 0x40000000 */
225 memory_region_allocate_system_memory(ram, NULL, "mcf5208.ram", ram_size);
226 memory_region_add_subregion(address_space_mem, 0x40000000, ram);
229 memory_region_init_ram(sram, NULL, "mcf5208.sram", 16384, &error_fatal);
230 vmstate_register_ram_global(sram);
231 memory_region_add_subregion(address_space_mem, 0x80000000, sram);
233 /* Internal peripherals. */
234 pic = mcf_intc_init(address_space_mem, 0xfc048000, cpu);
236 mcf_uart_mm_init(address_space_mem, 0xfc060000, pic[26], serial_hds[0]);
237 mcf_uart_mm_init(address_space_mem, 0xfc064000, pic[27], serial_hds[1]);
238 mcf_uart_mm_init(address_space_mem, 0xfc068000, pic[28], serial_hds[2]);
240 mcf5208_sys_init(address_space_mem, pic);
243 fprintf(stderr, "Too many NICs\n");
246 if (nd_table[0].used)
247 mcf_fec_init(address_space_mem, &nd_table[0],
248 0xfc030000, pic + 36);
250 /* 0xfc000000 SCM. */
251 /* 0xfc004000 XBS. */
252 /* 0xfc008000 FlexBus CS. */
253 /* 0xfc030000 FEC. */
254 /* 0xfc040000 SCM + Power management. */
255 /* 0xfc044000 eDMA. */
256 /* 0xfc048000 INTC. */
257 /* 0xfc058000 I2C. */
258 /* 0xfc05c000 QSPI. */
259 /* 0xfc060000 UART0. */
260 /* 0xfc064000 UART0. */
261 /* 0xfc068000 UART0. */
262 /* 0xfc070000 DMA timers. */
263 /* 0xfc080000 PIT0. */
264 /* 0xfc084000 PIT1. */
265 /* 0xfc088000 EPORT. */
266 /* 0xfc08c000 Watchdog. */
267 /* 0xfc090000 clock module. */
268 /* 0xfc0a0000 CCM + reset. */
269 /* 0xfc0a4000 GPIO. */
270 /* 0xfc0a8000 SDRAM controller. */
273 if (!kernel_filename) {
274 if (qtest_enabled()) {
277 fprintf(stderr, "Kernel image must be specified\n");
281 kernel_size = load_elf(kernel_filename, NULL, NULL, &elf_entry,
282 NULL, NULL, 1, EM_68K, 0, 0);
284 if (kernel_size < 0) {
285 kernel_size = load_uimage(kernel_filename, &entry, NULL, NULL,
288 if (kernel_size < 0) {
289 kernel_size = load_image_targphys(kernel_filename, 0x40000000,
293 if (kernel_size < 0) {
294 fprintf(stderr, "qemu: could not load kernel '%s'\n", kernel_filename);
301 static void mcf5208evb_machine_init(MachineClass *mc)
303 mc->desc = "MCF5206EVB";
304 mc->init = mcf5208evb_init;
308 DEFINE_MACHINE("mcf5208evb", mcf5208evb_machine_init)