1/*
2 * Arnewsh 5206 ColdFire system emulation.
3 *
4 * Copyright (c) 2007 CodeSourcery.
5 *
6 * This code is licensed under the GPL
7 */
8
9#include "qemu/osdep.h"
10#include "qapi/error.h"
11#include "cpu.h"
12#include "hw/m68k/mcf.h"
13#include "hw/boards.h"
14#include "hw/loader.h"
15#include "elf.h"
16#include "exec/address-spaces.h"
17#include "qemu/error-report.h"
18#include "sysemu/qtest.h"
19
20#define KERNEL_LOAD_ADDR 0x10000
21#define AN5206_MBAR_ADDR 0x10000000
22#define AN5206_RAMBAR_ADDR 0x20000000
23
24/* Board init. */
25
26static void an5206_init(MachineState *machine)
27{
28 ram_addr_t ram_size = machine->ram_size;
29 const char *kernel_filename = machine->kernel_filename;
30 M68kCPU *cpu;
31 CPUM68KState *env;
32 int kernel_size;
33 uint64_t elf_entry;
34 hwaddr entry;
35 MemoryRegion *address_space_mem = get_system_memory();
36 MemoryRegion *ram = g_new(MemoryRegion, 1);
37 MemoryRegion *sram = g_new(MemoryRegion, 1);
38
39 cpu = M68K_CPU(cpu_create(machine->cpu_type));
40 env = &cpu->env;
41
42 /* Initialize CPU registers. */
43 env->vbr = 0;
44 /* TODO: allow changing MBAR and RAMBAR. */
45 env->mbar = AN5206_MBAR_ADDR | 1;
46 env->rambar0 = AN5206_RAMBAR_ADDR | 1;
47
48 /* DRAM at address zero */
49 memory_region_allocate_system_memory(ram, NULL, "an5206.ram", ram_size);
50 memory_region_add_subregion(address_space_mem, 0, ram);
51
52 /* Internal SRAM. */
53 memory_region_init_ram(sram, NULL, "an5206.sram", 512, &error_fatal);
54 memory_region_add_subregion(address_space_mem, AN5206_RAMBAR_ADDR, sram);
55
56 mcf5206_init(address_space_mem, AN5206_MBAR_ADDR, cpu);
57
58 /* Load kernel. */
59 if (!kernel_filename) {
60 if (qtest_enabled()) {
61 return;
62 }
63 error_report("Kernel image must be specified");
64 exit(1);
65 }
66
67 kernel_size = load_elf(kernel_filename, NULL, NULL, NULL, &elf_entry,
68 NULL, NULL, 1, EM_68K, 0, 0);
69 entry = elf_entry;
70 if (kernel_size < 0) {
71 kernel_size = load_uimage(kernel_filename, &entry, NULL, NULL,
72 NULL, NULL);
73 }
74 if (kernel_size < 0) {
75 kernel_size = load_image_targphys(kernel_filename, KERNEL_LOAD_ADDR,
76 ram_size - KERNEL_LOAD_ADDR);
77 entry = KERNEL_LOAD_ADDR;
78 }
79 if (kernel_size < 0) {
80 error_report("Could not load kernel '%s'", kernel_filename);
81 exit(1);
82 }
83
84 env->pc = entry;
85}
86
87static void an5206_machine_init(MachineClass *mc)
88{
89 mc->desc = "Arnewsh 5206";
90 mc->init = an5206_init;
91 mc->default_cpu_type = M68K_CPU_TYPE_NAME("m5206");
92}
93
94DEFINE_MACHINE("an5206", an5206_machine_init)
95