1 /* 2 * Bananapi M2U emulation 3 * 4 * Copyright (C) 2023 qianfan Zhao <qianfanguijin@163.com> 5 * 6 * This program is free software: you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation, either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program. If not, see <http://www.gnu.org/licenses/>. 18 */ 19 20 #include "qemu/osdep.h" 21 #include "qemu/units.h" 22 #include "exec/address-spaces.h" 23 #include "qapi/error.h" 24 #include "qemu/error-report.h" 25 #include "hw/boards.h" 26 #include "hw/i2c/i2c.h" 27 #include "hw/qdev-properties.h" 28 #include "hw/arm/allwinner-r40.h" 29 30 static struct arm_boot_info bpim2u_binfo; 31 32 /* 33 * R40 can boot from mmc0 and mmc2, and bpim2u has two mmc interface, one is 34 * connected to sdcard and another mount an emmc media. 35 * Attach the mmc driver and try loading bootloader. 36 */ 37 static void mmc_attach_drive(AwR40State *s, AwSdHostState *mmc, int unit, 38 bool load_bootroom, bool *bootroom_loaded) 39 { 40 DriveInfo *di = drive_get(IF_SD, 0, unit); 41 BlockBackend *blk = di ? blk_by_legacy_dinfo(di) : NULL; 42 BusState *bus; 43 DeviceState *carddev; 44 45 bus = qdev_get_child_bus(DEVICE(mmc), "sd-bus"); 46 if (bus == NULL) { 47 error_report("No SD bus found in SOC object"); 48 exit(1); 49 } 50 51 carddev = qdev_new(TYPE_SD_CARD); 52 qdev_prop_set_drive_err(carddev, "drive", blk, &error_fatal); 53 qdev_realize_and_unref(carddev, bus, &error_fatal); 54 55 if (load_bootroom && blk && blk_is_available(blk)) { 56 /* Use Boot ROM to copy data from SD card to SRAM */ 57 *bootroom_loaded = allwinner_r40_bootrom_setup(s, blk, unit); 58 } 59 } 60 61 static void bpim2u_init(MachineState *machine) 62 { 63 bool bootroom_loaded = false; 64 AwR40State *r40; 65 I2CBus *i2c; 66 67 /* BIOS is not supported by this board */ 68 if (machine->firmware) { 69 error_report("BIOS not supported for this machine"); 70 exit(1); 71 } 72 73 /* Only allow Cortex-A7 for this board */ 74 if (strcmp(machine->cpu_type, ARM_CPU_TYPE_NAME("cortex-a7")) != 0) { 75 error_report("This board can only be used with cortex-a7 CPU"); 76 exit(1); 77 } 78 79 r40 = AW_R40(object_new(TYPE_AW_R40)); 80 object_property_add_child(OBJECT(machine), "soc", OBJECT(r40)); 81 object_unref(OBJECT(r40)); 82 83 /* Setup timer properties */ 84 object_property_set_int(OBJECT(r40), "clk0-freq", 32768, &error_abort); 85 object_property_set_int(OBJECT(r40), "clk1-freq", 24 * 1000 * 1000, 86 &error_abort); 87 88 /* DRAMC */ 89 r40->ram_size = machine->ram_size / MiB; 90 object_property_set_uint(OBJECT(r40), "ram-addr", 91 r40->memmap[AW_R40_DEV_SDRAM], &error_abort); 92 object_property_set_int(OBJECT(r40), "ram-size", 93 r40->ram_size, &error_abort); 94 95 /* GMAC PHY */ 96 object_property_set_uint(OBJECT(r40), "gmac-phy-addr", 1, &error_abort); 97 98 /* Mark R40 object realized */ 99 qdev_realize(DEVICE(r40), NULL, &error_abort); 100 101 /* 102 * Plug in SD card and try load bootrom, R40 has 4 mmc controllers but can 103 * only booting from mmc0 and mmc2. 104 */ 105 for (int i = 0; i < AW_R40_NUM_MMCS; i++) { 106 switch (i) { 107 case 0: 108 case 2: 109 mmc_attach_drive(r40, &r40->mmc[i], i, 110 !machine->kernel_filename && !bootroom_loaded, 111 &bootroom_loaded); 112 break; 113 default: 114 mmc_attach_drive(r40, &r40->mmc[i], i, false, NULL); 115 break; 116 } 117 } 118 119 /* Connect AXP221 */ 120 i2c = I2C_BUS(qdev_get_child_bus(DEVICE(&r40->i2c0), "i2c")); 121 i2c_slave_create_simple(i2c, "axp221_pmu", 0x34); 122 123 /* SDRAM */ 124 memory_region_add_subregion(get_system_memory(), 125 r40->memmap[AW_R40_DEV_SDRAM], machine->ram); 126 127 bpim2u_binfo.loader_start = r40->memmap[AW_R40_DEV_SDRAM]; 128 bpim2u_binfo.ram_size = machine->ram_size; 129 bpim2u_binfo.psci_conduit = QEMU_PSCI_CONDUIT_SMC; 130 arm_load_kernel(ARM_CPU(first_cpu), machine, &bpim2u_binfo); 131 } 132 133 static void bpim2u_machine_init(MachineClass *mc) 134 { 135 mc->desc = "Bananapi M2U (Cortex-A7)"; 136 mc->init = bpim2u_init; 137 mc->min_cpus = AW_R40_NUM_CPUS; 138 mc->max_cpus = AW_R40_NUM_CPUS; 139 mc->default_cpus = AW_R40_NUM_CPUS; 140 mc->default_cpu_type = ARM_CPU_TYPE_NAME("cortex-a7"); 141 mc->default_ram_size = 1 * GiB; 142 mc->default_ram_id = "bpim2u.ram"; 143 } 144 145 DEFINE_MACHINE("bpim2u", bpim2u_machine_init) 146