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8d9006ae Z |
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" | |
a9545430 | 26 | #include "hw/i2c/i2c.h" |
8d9006ae Z |
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; | |
a9545430 | 65 | I2CBus *i2c; |
8d9006ae Z |
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 | ||
4a52ef61 Z |
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 | ||
8d9006ae Z |
95 | /* Mark R40 object realized */ |
96 | qdev_realize(DEVICE(r40), NULL, &error_abort); | |
97 | ||
98 | /* | |
99 | * Plug in SD card and try load bootrom, R40 has 4 mmc controllers but can | |
100 | * only booting from mmc0 and mmc2. | |
101 | */ | |
102 | for (int i = 0; i < AW_R40_NUM_MMCS; i++) { | |
103 | switch (i) { | |
104 | case 0: | |
105 | case 2: | |
106 | mmc_attach_drive(r40, &r40->mmc[i], i, | |
107 | !machine->kernel_filename && !bootroom_loaded, | |
108 | &bootroom_loaded); | |
109 | break; | |
110 | default: | |
111 | mmc_attach_drive(r40, &r40->mmc[i], i, false, NULL); | |
112 | break; | |
113 | } | |
114 | } | |
115 | ||
a9545430 Z |
116 | /* Connect AXP221 */ |
117 | i2c = I2C_BUS(qdev_get_child_bus(DEVICE(&r40->i2c0), "i2c")); | |
118 | i2c_slave_create_simple(i2c, "axp221_pmu", 0x34); | |
119 | ||
8d9006ae Z |
120 | /* SDRAM */ |
121 | memory_region_add_subregion(get_system_memory(), | |
122 | r40->memmap[AW_R40_DEV_SDRAM], machine->ram); | |
123 | ||
124 | bpim2u_binfo.loader_start = r40->memmap[AW_R40_DEV_SDRAM]; | |
125 | bpim2u_binfo.ram_size = machine->ram_size; | |
126 | bpim2u_binfo.psci_conduit = QEMU_PSCI_CONDUIT_SMC; | |
127 | arm_load_kernel(ARM_CPU(first_cpu), machine, &bpim2u_binfo); | |
128 | } | |
129 | ||
130 | static void bpim2u_machine_init(MachineClass *mc) | |
131 | { | |
132 | mc->desc = "Bananapi M2U (Cortex-A7)"; | |
133 | mc->init = bpim2u_init; | |
134 | mc->min_cpus = AW_R40_NUM_CPUS; | |
135 | mc->max_cpus = AW_R40_NUM_CPUS; | |
136 | mc->default_cpus = AW_R40_NUM_CPUS; | |
137 | mc->default_cpu_type = ARM_CPU_TYPE_NAME("cortex-a7"); | |
138 | mc->default_ram_size = 1 * GiB; | |
139 | mc->default_ram_id = "bpim2u.ram"; | |
140 | } | |
141 | ||
142 | DEFINE_MACHINE("bpim2u", bpim2u_machine_init) |