--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/symbian-qemu-0.9.1-12/qemu-symbian-svp/hw/mips_mipssim.c Fri Jul 31 15:01:17 2009 +0100
@@ -0,0 +1,199 @@
+/*
+ * QEMU/mipssim emulation
+ *
+ * Emulates a very simple machine model similiar to the one use by the
+ * proprietary MIPS emulator.
+ *
+ * Copyright (c) 2007 Thiemo Seufer
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include "hw.h"
+#include "mips.h"
+#include "pc.h"
+#include "isa.h"
+#include "net.h"
+#include "sysemu.h"
+#include "boards.h"
+
+#ifdef TARGET_WORDS_BIGENDIAN
+#define BIOS_FILENAME "mips_bios.bin"
+#else
+#define BIOS_FILENAME "mipsel_bios.bin"
+#endif
+
+#ifdef TARGET_MIPS64
+#define PHYS_TO_VIRT(x) ((x) | ~0x7fffffffULL)
+#else
+#define PHYS_TO_VIRT(x) ((x) | ~0x7fffffffU)
+#endif
+
+#define VIRT_TO_PHYS_ADDEND (-((int64_t)(int32_t)0x80000000))
+
+static struct _loaderparams {
+ int ram_size;
+ const char *kernel_filename;
+ const char *kernel_cmdline;
+ const char *initrd_filename;
+} loaderparams;
+
+static void load_kernel (CPUState *env)
+{
+ int64_t entry, kernel_low, kernel_high;
+ long kernel_size;
+ long initrd_size;
+ ram_addr_t initrd_offset;
+
+ kernel_size = load_elf(loaderparams.kernel_filename, VIRT_TO_PHYS_ADDEND,
+ (uint64_t *)&entry, (uint64_t *)&kernel_low,
+ (uint64_t *)&kernel_high);
+ if (kernel_size >= 0) {
+ if ((entry & ~0x7fffffffULL) == 0x80000000)
+ entry = (int32_t)entry;
+ env->active_tc.PC = entry;
+ } else {
+ fprintf(stderr, "qemu: could not load kernel '%s'\n",
+ loaderparams.kernel_filename);
+ exit(1);
+ }
+
+ /* load initrd */
+ initrd_size = 0;
+ initrd_offset = 0;
+ if (loaderparams.initrd_filename) {
+ initrd_size = get_image_size (loaderparams.initrd_filename);
+ if (initrd_size > 0) {
+ initrd_offset = (kernel_high + ~TARGET_PAGE_MASK) & TARGET_PAGE_MASK;
+ if (initrd_offset + initrd_size > loaderparams.ram_size) {
+ fprintf(stderr,
+ "qemu: memory too small for initial ram disk '%s'\n",
+ loaderparams.initrd_filename);
+ exit(1);
+ }
+ initrd_size = load_image(loaderparams.initrd_filename,
+ phys_ram_base + initrd_offset);
+ }
+ if (initrd_size == (target_ulong) -1) {
+ fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
+ loaderparams.initrd_filename);
+ exit(1);
+ }
+ }
+}
+
+static void main_cpu_reset(void *opaque)
+{
+ CPUState *env = opaque;
+ cpu_reset(env);
+
+ if (loaderparams.kernel_filename)
+ load_kernel (env);
+}
+
+static void
+mips_mipssim_init (ram_addr_t ram_size, int vga_ram_size,
+ const char *boot_device, DisplayState *ds,
+ const char *kernel_filename, const char *kernel_cmdline,
+ const char *initrd_filename, const char *cpu_model)
+{
+ char buf[1024];
+ unsigned long bios_offset;
+ CPUState *env;
+ int bios_size;
+
+ /* Init CPUs. */
+ if (cpu_model == NULL) {
+#ifdef TARGET_MIPS64
+ cpu_model = "5Kf";
+#else
+ cpu_model = "24Kf";
+#endif
+ }
+ env = cpu_init(cpu_model);
+ if (!env) {
+ fprintf(stderr, "Unable to find CPU definition\n");
+ exit(1);
+ }
+ qemu_register_reset(main_cpu_reset, env);
+
+ /* Allocate RAM. */
+ cpu_register_physical_memory(0, ram_size, IO_MEM_RAM);
+
+ /* Load a BIOS / boot exception handler image. */
+ bios_offset = ram_size + vga_ram_size;
+ if (bios_name == NULL)
+ bios_name = BIOS_FILENAME;
+ snprintf(buf, sizeof(buf), "%s/%s", bios_dir, bios_name);
+ bios_size = load_image(buf, phys_ram_base + bios_offset);
+ if ((bios_size < 0 || bios_size > BIOS_SIZE) && !kernel_filename) {
+ /* Bail out if we have neither a kernel image nor boot vector code. */
+ fprintf(stderr,
+ "qemu: Could not load MIPS bios '%s', and no -kernel argument was specified\n",
+ buf);
+ exit(1);
+ } else {
+ /* Map the BIOS / boot exception handler. */
+ cpu_register_physical_memory(0x1fc00000LL,
+ bios_size, bios_offset | IO_MEM_ROM);
+ /* We have a boot vector start address. */
+ env->active_tc.PC = (target_long)(int32_t)0xbfc00000;
+ }
+
+ if (kernel_filename) {
+ loaderparams.ram_size = ram_size;
+ loaderparams.kernel_filename = kernel_filename;
+ loaderparams.kernel_cmdline = kernel_cmdline;
+ loaderparams.initrd_filename = initrd_filename;
+ load_kernel(env);
+ }
+
+ /* Init CPU internal devices. */
+ cpu_mips_irq_init_cpu(env);
+ cpu_mips_clock_init(env);
+
+ /* Register 64 KB of ISA IO space at 0x1fd00000. */
+ isa_mmio_init(0x1fd00000, 0x00010000);
+
+ /* A single 16450 sits at offset 0x3f8. It is attached to
+ MIPS CPU INT2, which is interrupt 4. */
+ if (serial_hds[0])
+ serial_init(0x3f8, env->irq[4], 115200, serial_hds[0]);
+
+ if (nd_table[0].vlan) {
+ if (nd_table[0].model == NULL
+ || strcmp(nd_table[0].model, "mipsnet") == 0) {
+ /* MIPSnet uses the MIPS CPU INT0, which is interrupt 2. */
+ mipsnet_init(0x4200, env->irq[2], &nd_table[0]);
+ } else if (strcmp(nd_table[0].model, "?") == 0) {
+ fprintf(stderr, "qemu: Supported NICs: mipsnet\n");
+ exit (1);
+ } else {
+ fprintf(stderr, "qemu: Unsupported NIC: %s\n", nd_table[0].model);
+ exit (1);
+ }
+ }
+}
+
+QEMUMachine mips_mipssim_machine = {
+ .name = "mipssim",
+ .desc = "MIPS MIPSsim platform",
+ .init = mips_mipssim_init,
+ .ram_require = BIOS_SIZE + VGA_RAM_SIZE /* unused */,
+ .nodisk_ok = 1,
+};