Commit 9f04e1d9 authored by Thomas Huth's avatar Thomas Huth Committed by Thomas Huth
Browse files

hw/m68k/mcf5208: Support loading of bios images 



The MCF5208EVB supports 2 MiB of flash at address 0. Add support
for this memory region and some code to load the file that can
be specified with the "-bios" command line option.
This can be used for example to load U-Boot images for the
MCF5208EVB (we still lack some features in the CPU emulation for
this firmware, though, so it can not be run successfully yet).

Reviewed-by: default avatarStefano Garzarella <sgarzare@redhat.com>
Signed-off-by: default avatarThomas Huth <huth@tuxfamily.org>
parent a9d2e3f1

hw/m68k/mcf5208.c

+29 −1
Original line number Diff line number Diff line
@@ -27,6 +27,8 @@ 


#define SYS_FREQ 166666666



#define ROM_SIZE 0x200000



#define PCSR_EN         0x0001

#define PCSR_RLD        0x0002

#define PCSR_PIF        0x0004
@@ -227,6 +229,7 @@ static void mcf5208evb_init(MachineState *machine) 
    hwaddr entry;

    qemu_irq *pic;

    MemoryRegion *address_space_mem = get_system_memory();

    MemoryRegion *rom = g_new(MemoryRegion, 1);

    MemoryRegion *ram = g_new(MemoryRegion, 1);

    MemoryRegion *sram = g_new(MemoryRegion, 1);
@@ -237,6 +240,10 @@ static void mcf5208evb_init(MachineState *machine) 
    env->vbr = 0;

    /* TODO: Configure BARs.  */



    /* ROM at 0x00000000 */

    memory_region_init_rom(rom, NULL, "mcf5208.rom", ROM_SIZE, &error_fatal);

    memory_region_add_subregion(address_space_mem, 0x00000000, rom);



    /* DRAM at 0x40000000 */

    memory_region_allocate_system_memory(ram, NULL, "mcf5208.ram", ram_size);

    memory_region_add_subregion(address_space_mem, 0x40000000, ram);
@@ -285,9 +292,30 @@ static void mcf5208evb_init(MachineState *machine) 
    /*  0xfc0a4000 GPIO.  */

    /* 0xfc0a8000 SDRAM controller.  */



    /* Load firmware */

    if (bios_name) {

        char *fn;

        uint8_t *ptr;



        fn = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);

        if (!fn) {

            error_report("Could not find ROM image '%s'", bios_name);

            exit(1);

        }

        if (load_image_targphys(fn, 0x0, ROM_SIZE) < 8) {

            error_report("Could not load ROM image '%s'", bios_name);

            exit(1);

        }

        g_free(fn);

        /* Initial PC is always at offset 4 in firmware binaries */

        ptr = rom_ptr(0x4, 4);

        assert(ptr != NULL);

        env->pc = ldl_p(ptr);

    }



    /* Load kernel.  */

    if (!kernel_filename) {

        if (qtest_enabled()) {

        if (qtest_enabled() || bios_name) {

            return;

        }

        error_report("Kernel image must be specified");