diff options
Diffstat (limited to 'hw/arm/bananapi_m2u.c')
| -rw-r--r-- | hw/arm/bananapi_m2u.c | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/hw/arm/bananapi_m2u.c b/hw/arm/bananapi_m2u.c new file mode 100644 index 0000000000..74121d8966 --- /dev/null +++ b/hw/arm/bananapi_m2u.c @@ -0,0 +1,145 @@ +/* + * Bananapi M2U emulation + * + * Copyright (C) 2023 qianfan Zhao <qianfanguijin@163.com> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include "qemu/osdep.h" +#include "qemu/units.h" +#include "exec/address-spaces.h" +#include "qapi/error.h" +#include "qemu/error-report.h" +#include "hw/boards.h" +#include "hw/i2c/i2c.h" +#include "hw/qdev-properties.h" +#include "hw/arm/allwinner-r40.h" + +static struct arm_boot_info bpim2u_binfo; + +/* + * R40 can boot from mmc0 and mmc2, and bpim2u has two mmc interface, one is + * connected to sdcard and another mount an emmc media. + * Attach the mmc driver and try loading bootloader. + */ +static void mmc_attach_drive(AwR40State *s, AwSdHostState *mmc, int unit, + bool load_bootroom, bool *bootroom_loaded) +{ + DriveInfo *di = drive_get(IF_SD, 0, unit); + BlockBackend *blk = di ? blk_by_legacy_dinfo(di) : NULL; + BusState *bus; + DeviceState *carddev; + + bus = qdev_get_child_bus(DEVICE(mmc), "sd-bus"); + if (bus == NULL) { + error_report("No SD bus found in SOC object"); + exit(1); + } + + carddev = qdev_new(TYPE_SD_CARD); + qdev_prop_set_drive_err(carddev, "drive", blk, &error_fatal); + qdev_realize_and_unref(carddev, bus, &error_fatal); + + if (load_bootroom && blk && blk_is_available(blk)) { + /* Use Boot ROM to copy data from SD card to SRAM */ + *bootroom_loaded = allwinner_r40_bootrom_setup(s, blk, unit); + } +} + +static void bpim2u_init(MachineState *machine) +{ + bool bootroom_loaded = false; + AwR40State *r40; + I2CBus *i2c; + + /* BIOS is not supported by this board */ + if (machine->firmware) { + error_report("BIOS not supported for this machine"); + exit(1); + } + + /* Only allow Cortex-A7 for this board */ + if (strcmp(machine->cpu_type, ARM_CPU_TYPE_NAME("cortex-a7")) != 0) { + error_report("This board can only be used with cortex-a7 CPU"); + exit(1); + } + + r40 = AW_R40(object_new(TYPE_AW_R40)); + object_property_add_child(OBJECT(machine), "soc", OBJECT(r40)); + object_unref(OBJECT(r40)); + + /* Setup timer properties */ + object_property_set_int(OBJECT(r40), "clk0-freq", 32768, &error_abort); + object_property_set_int(OBJECT(r40), "clk1-freq", 24 * 1000 * 1000, + &error_abort); + + /* DRAMC */ + r40->ram_size = machine->ram_size / MiB; + object_property_set_uint(OBJECT(r40), "ram-addr", + r40->memmap[AW_R40_DEV_SDRAM], &error_abort); + object_property_set_int(OBJECT(r40), "ram-size", + r40->ram_size, &error_abort); + + /* GMAC PHY */ + object_property_set_uint(OBJECT(r40), "gmac-phy-addr", 1, &error_abort); + + /* Mark R40 object realized */ + qdev_realize(DEVICE(r40), NULL, &error_abort); + + /* + * Plug in SD card and try load bootrom, R40 has 4 mmc controllers but can + * only booting from mmc0 and mmc2. + */ + for (int i = 0; i < AW_R40_NUM_MMCS; i++) { + switch (i) { + case 0: + case 2: + mmc_attach_drive(r40, &r40->mmc[i], i, + !machine->kernel_filename && !bootroom_loaded, + &bootroom_loaded); + break; + default: + mmc_attach_drive(r40, &r40->mmc[i], i, false, NULL); + break; + } + } + + /* Connect AXP221 */ + i2c = I2C_BUS(qdev_get_child_bus(DEVICE(&r40->i2c0), "i2c")); + i2c_slave_create_simple(i2c, "axp221_pmu", 0x34); + + /* SDRAM */ + memory_region_add_subregion(get_system_memory(), + r40->memmap[AW_R40_DEV_SDRAM], machine->ram); + + bpim2u_binfo.loader_start = r40->memmap[AW_R40_DEV_SDRAM]; + bpim2u_binfo.ram_size = machine->ram_size; + bpim2u_binfo.psci_conduit = QEMU_PSCI_CONDUIT_SMC; + arm_load_kernel(ARM_CPU(first_cpu), machine, &bpim2u_binfo); +} + +static void bpim2u_machine_init(MachineClass *mc) +{ + mc->desc = "Bananapi M2U (Cortex-A7)"; + mc->init = bpim2u_init; + mc->min_cpus = AW_R40_NUM_CPUS; + mc->max_cpus = AW_R40_NUM_CPUS; + mc->default_cpus = AW_R40_NUM_CPUS; + mc->default_cpu_type = ARM_CPU_TYPE_NAME("cortex-a7"); + mc->default_ram_size = 1 * GiB; + mc->default_ram_id = "bpim2u.ram"; +} + +DEFINE_MACHINE("bpim2u", bpim2u_machine_init) |