Revert "block: prevent multiwrite_merge from creating too large iovecs"
[qemu.git] / hw / an5206.c
bloba4b83b0f44571cdd4287d6e21916e91c78dbead7
1 /*
2 * Arnewsh 5206 ColdFire system emulation.
4 * Copyright (c) 2007 CodeSourcery.
6 * This code is licenced under the GPL
7 */
9 #include "hw.h"
10 #include "pc.h"
11 #include "mcf.h"
12 #include "sysemu.h"
13 #include "boards.h"
14 #include "loader.h"
15 #include "elf.h"
17 #define KERNEL_LOAD_ADDR 0x10000
18 #define AN5206_MBAR_ADDR 0x10000000
19 #define AN5206_RAMBAR_ADDR 0x20000000
21 /* Stub functions for hardware that doesn't exist. */
22 void pic_info(Monitor *mon)
26 void irq_info(Monitor *mon)
30 /* Board init. */
32 static void an5206_init(ram_addr_t ram_size,
33 const char *boot_device,
34 const char *kernel_filename, const char *kernel_cmdline,
35 const char *initrd_filename, const char *cpu_model)
37 CPUState *env;
38 int kernel_size;
39 uint64_t elf_entry;
40 target_phys_addr_t entry;
42 if (!cpu_model)
43 cpu_model = "m5206";
44 env = cpu_init(cpu_model);
45 if (!env) {
46 hw_error("Unable to find m68k CPU definition\n");
49 /* Initialize CPU registers. */
50 env->vbr = 0;
51 /* TODO: allow changing MBAR and RAMBAR. */
52 env->mbar = AN5206_MBAR_ADDR | 1;
53 env->rambar0 = AN5206_RAMBAR_ADDR | 1;
55 /* DRAM at address zero */
56 cpu_register_physical_memory(0, ram_size,
57 qemu_ram_alloc(ram_size) | IO_MEM_RAM);
59 /* Internal SRAM. */
60 cpu_register_physical_memory(AN5206_RAMBAR_ADDR, 512,
61 qemu_ram_alloc(512) | IO_MEM_RAM);
63 mcf5206_init(AN5206_MBAR_ADDR, env);
65 /* Load kernel. */
66 if (!kernel_filename) {
67 fprintf(stderr, "Kernel image must be specified\n");
68 exit(1);
71 kernel_size = load_elf(kernel_filename, 0, &elf_entry, NULL, NULL,
72 1, ELF_MACHINE, 0);
73 entry = elf_entry;
74 if (kernel_size < 0) {
75 kernel_size = load_uimage(kernel_filename, &entry, NULL, NULL);
77 if (kernel_size < 0) {
78 kernel_size = load_image_targphys(kernel_filename, KERNEL_LOAD_ADDR,
79 ram_size - KERNEL_LOAD_ADDR);
80 entry = KERNEL_LOAD_ADDR;
82 if (kernel_size < 0) {
83 fprintf(stderr, "qemu: could not load kernel '%s'\n", kernel_filename);
84 exit(1);
87 env->pc = entry;
90 static QEMUMachine an5206_machine = {
91 .name = "an5206",
92 .desc = "Arnewsh 5206",
93 .init = an5206_init,
96 static void an5206_machine_init(void)
98 qemu_register_machine(&an5206_machine);
101 machine_init(an5206_machine_init);