diff options
Diffstat (limited to 'hw/ppc/sam460ex.c')
| -rw-r--r-- | hw/ppc/sam460ex.c | 65 |
1 files changed, 35 insertions, 30 deletions
diff --git a/hw/ppc/sam460ex.c b/hw/ppc/sam460ex.c index 850bb3b817..4a22ce3761 100644 --- a/hw/ppc/sam460ex.c +++ b/hw/ppc/sam460ex.c @@ -73,14 +73,6 @@ #define OPB_FREQ 115000000 #define EBC_FREQ 115000000 #define UART_FREQ 11059200 -#define SDRAM_NR_BANKS 4 - -/* The SoC could also handle 4 GiB but firmware does not work with that. */ -/* Maybe it overflows a signed 32 bit number somewhere? */ -static const ram_addr_t ppc460ex_sdram_bank_sizes[] = { - 2 * GiB, 1 * GiB, 512 * MiB, 256 * MiB, 128 * MiB, 64 * MiB, - 32 * MiB, 0 -}; struct boot_info { uint32_t dt_base; @@ -131,13 +123,12 @@ static int sam460ex_load_uboot(void) return 0; } -static int sam460ex_load_device_tree(hwaddr addr, - uint32_t ramsize, +static int sam460ex_load_device_tree(MachineState *machine, + hwaddr addr, hwaddr initrd_base, - hwaddr initrd_size, - const char *kernel_cmdline) + hwaddr initrd_size) { - uint32_t mem_reg_property[] = { 0, 0, cpu_to_be32(ramsize) }; + uint32_t mem_reg_property[] = { 0, 0, cpu_to_be32(machine->ram_size) }; char *filename; int fdt_size; void *fdt; @@ -171,7 +162,8 @@ static int sam460ex_load_device_tree(hwaddr addr, qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-end", (initrd_base + initrd_size)); - qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", kernel_cmdline); + qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", + machine->kernel_cmdline); /* Copy data from the host device tree into the guest. Since the guest can * directly access the timebase without host involvement, we must expose @@ -208,7 +200,9 @@ static int sam460ex_load_device_tree(hwaddr addr, EBC_FREQ); rom_add_blob_fixed(BINARY_DEVICE_TREE_FILE, fdt, fdt_size, addr); - g_free(fdt); + + /* Set machine->fdt for 'dumpdtb' QMP/HMP command */ + machine->fdt = fdt; return fdt_size; } @@ -274,9 +268,6 @@ static void sam460ex_init(MachineState *machine) { MemoryRegion *address_space_mem = get_system_memory(); MemoryRegion *isa = g_new(MemoryRegion, 1); - MemoryRegion *ram_memories = g_new(MemoryRegion, SDRAM_NR_BANKS); - hwaddr ram_bases[SDRAM_NR_BANKS] = {0}; - hwaddr ram_sizes[SDRAM_NR_BANKS] = {0}; MemoryRegion *l2cache_ram = g_new(MemoryRegion, 1); DeviceState *uic[4]; int i; @@ -343,22 +334,37 @@ static void sam460ex_init(MachineState *machine) } /* SDRAM controller */ - /* put all RAM on first bank because board has one slot - * and firmware only checks that */ - ppc4xx_sdram_banks(machine->ram, 1, ram_memories, ram_bases, ram_sizes, - ppc460ex_sdram_bank_sizes); - + /* The SoC could also handle 4 GiB but firmware does not work with that. */ + if (machine->ram_size > 2 * GiB) { + error_report("Memory over 2 GiB is not supported"); + exit(1); + } + /* Firmware needs at least 64 MiB */ + if (machine->ram_size < 64 * MiB) { + error_report("Memory below 64 MiB is not supported"); + exit(1); + } + dev = qdev_new(TYPE_PPC4xx_SDRAM_DDR2); + object_property_set_link(OBJECT(dev), "dram", OBJECT(machine->ram), + &error_abort); + /* + * Put all RAM on first bank because board has one slot + * and firmware only checks that + */ + object_property_set_int(OBJECT(dev), "nbanks", 1, &error_abort); + ppc4xx_dcr_realize(PPC4xx_DCR_DEVICE(dev), cpu, &error_fatal); + object_unref(OBJECT(dev)); /* FIXME: does 460EX have ECC interrupts? */ - ppc440_sdram_init(env, SDRAM_NR_BANKS, ram_memories, - ram_bases, ram_sizes, 1); + /* Enable SDRAM memory regions as we may boot without firmware */ + ppc4xx_sdram_ddr2_enable(PPC4xx_SDRAM_DDR2(dev)); /* IIC controllers and devices */ dev = sysbus_create_simple(TYPE_PPC4xx_I2C, 0x4ef600700, qdev_get_gpio_in(uic[0], 2)); i2c = PPC4xx_I2C(dev)->bus; /* SPD EEPROM on RAM module */ - spd_data = spd_data_generate(ram_sizes[0] < 128 * MiB ? DDR : DDR2, - ram_sizes[0]); + spd_data = spd_data_generate(machine->ram_size < 128 * MiB ? DDR : DDR2, + machine->ram_size); spd_data[20] = 4; /* SO-DIMM module */ smbus_eeprom_init_one(i2c, 0x50, spd_data); /* RTC */ @@ -496,9 +502,8 @@ static void sam460ex_init(MachineState *machine) if (machine->kernel_filename) { int dt_size; - dt_size = sam460ex_load_device_tree(FDT_ADDR, machine->ram_size, - RAMDISK_ADDR, initrd_size, - machine->kernel_cmdline); + dt_size = sam460ex_load_device_tree(machine, FDT_ADDR, + RAMDISK_ADDR, initrd_size); boot_info->dt_base = FDT_ADDR; boot_info->dt_size = dt_size; |