@samitouri / QOSamiQemu
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1 /*
2 * ASPEED AST1040 EVB
3 *
4 * Copyright (C) 2026 ASPEED Technology Inc.
5 *
6 * SPDX-License-Identifier: GPL-2.0-or-later
7 */
8
9 #include "qemu/osdep.h"
10 #include "qapi/error.h"
11 #include "hw/arm/boot.h"
12 #include "hw/arm/machines-qom.h"
13 #include "hw/arm/aspeed.h"
14 #include "hw/arm/aspeed_soc.h"
15 #include "hw/core/qdev-clock.h"
16 #include "system/system.h"
17 #include "hw/i2c/smbus_eeprom.h"
18
19 #define AST1040_INTERNAL_FLASH_SIZE (4 * MiB)
20 /* Main SYSCLK frequency in Hz (400MHz) */
21 #define SYSCLK_FRQ 400000000ULL
22
23 static void aspeed_bic_machine_init(MachineState *machine)
24 {
25 AspeedMachineState *bmc = ASPEED_MACHINE(machine);
26 AspeedMachineClass *amc = ASPEED_MACHINE_GET_CLASS(machine);
27 Clock *sysclk;
28
29 sysclk = clock_new(OBJECT(machine), "SYSCLK");
30 clock_set_hz(sysclk, SYSCLK_FRQ);
31
32 bmc->soc = ASPEED_SOC(object_new(amc->soc_name));
33 object_property_add_child(OBJECT(machine), "soc", OBJECT(bmc->soc));
34 object_unref(OBJECT(bmc->soc));
35 qdev_connect_clock_in(DEVICE(bmc->soc), "sysclk", sysclk);
36
37 object_property_set_link(OBJECT(bmc->soc), "memory",
38 OBJECT(get_system_memory()), &error_abort);
39 aspeed_connect_serial_hds_to_uarts(bmc);
40 qdev_realize(DEVICE(bmc->soc), NULL, &error_abort);
41
42 if (amc->i2c_init) {
43 amc->i2c_init(bmc);
44 }
45
46 armv7m_load_kernel(ARM_CPU(first_cpu),
47 machine->kernel_filename,
48 0,
49 AST1040_INTERNAL_FLASH_SIZE);
50 }
51
52 static void ast1040_evb_i2c_init(AspeedMachineState *bmc)
53 {
54 AspeedSoCState *soc = bmc->soc;
55 uint8_t *eeprom_buf = g_malloc0(256);
56
57 smbus_eeprom_init_one(aspeed_i2c_get_bus(&soc->i2c, 0), 0x50, eeprom_buf);
58 i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 1), "tmp105", 0x4d);
59 }
60
61 static void aspeed_machine_ast1040_evb_class_init(ObjectClass *oc,
62 const void *data)
63 {
64 MachineClass *mc = MACHINE_CLASS(oc);
65 AspeedMachineClass *amc = ASPEED_MACHINE_CLASS(oc);
66
67 mc->desc = "Aspeed AST1040 BIC EVB (Cortex-M4F)";
68 amc->soc_name = "ast1040-a0";
69 amc->hw_strap1 = 0;
70 amc->hw_strap2 = 0;
71 mc->init = aspeed_bic_machine_init;
72 amc->i2c_init = ast1040_evb_i2c_init;
73 mc->default_ram_size = 0;
74 amc->macs_mask = 0;
75 amc->uart_default = ASPEED_DEV_UART12;
76 aspeed_machine_class_init_cpus_defaults(mc);
77 }
78
79 static const TypeInfo aspeed_ast1040_evb_types[] = {
80 {
81 .name = MACHINE_TYPE_NAME("ast1040-evb"),
82 .parent = TYPE_ASPEED_MACHINE,
83 .class_init = aspeed_machine_ast1040_evb_class_init,
84 .interfaces = arm_machine_interfaces,
85 }
86 };
87
88 DEFINE_TYPES(aspeed_ast1040_evb_types)