1 | /* |
2 | * SABRELITE Board System emulation. |
3 | * |
4 | * Copyright (c) 2015 Jean-Christophe Dubois <jcd@tribudubois.net> |
5 | * |
6 | * This code is licensed under the GPL, version 2 or later. |
7 | * See the file `COPYING' in the top level directory. |
8 | * |
9 | * It (partially) emulates a sabrelite board, with a Freescale |
10 | * i.MX6 SoC |
11 | */ |
12 | |
13 | #include "qemu/osdep.h" |
14 | #include "qapi/error.h" |
15 | #include "hw/arm/fsl-imx6.h" |
16 | #include "hw/boards.h" |
17 | #include "hw/qdev-properties.h" |
18 | #include "sysemu/sysemu.h" |
19 | #include "qemu/error-report.h" |
20 | #include "sysemu/qtest.h" |
21 | |
22 | typedef struct IMX6Sabrelite { |
23 | FslIMX6State soc; |
24 | MemoryRegion ram; |
25 | } IMX6Sabrelite; |
26 | |
27 | static struct arm_boot_info sabrelite_binfo = { |
28 | /* DDR memory start */ |
29 | .loader_start = FSL_IMX6_MMDC_ADDR, |
30 | /* No board ID, we boot from DT tree */ |
31 | .board_id = -1, |
32 | }; |
33 | |
34 | /* No need to do any particular setup for secondary boot */ |
35 | static void sabrelite_write_secondary(ARMCPU *cpu, |
36 | const struct arm_boot_info *info) |
37 | { |
38 | } |
39 | |
40 | /* Secondary cores are reset through SRC device */ |
41 | static void sabrelite_reset_secondary(ARMCPU *cpu, |
42 | const struct arm_boot_info *info) |
43 | { |
44 | } |
45 | |
46 | static void sabrelite_init(MachineState *machine) |
47 | { |
48 | IMX6Sabrelite *s = g_new0(IMX6Sabrelite, 1); |
49 | Error *err = NULL; |
50 | |
51 | /* Check the amount of memory is compatible with the SOC */ |
52 | if (machine->ram_size > FSL_IMX6_MMDC_SIZE) { |
53 | error_report("RAM size " RAM_ADDR_FMT " above max supported (%08x)" , |
54 | machine->ram_size, FSL_IMX6_MMDC_SIZE); |
55 | exit(1); |
56 | } |
57 | |
58 | object_initialize_child(OBJECT(machine), "soc" , &s->soc, sizeof(s->soc), |
59 | TYPE_FSL_IMX6, &error_abort, NULL); |
60 | |
61 | object_property_set_bool(OBJECT(&s->soc), true, "realized" , &err); |
62 | if (err != NULL) { |
63 | error_report("%s" , error_get_pretty(err)); |
64 | exit(1); |
65 | } |
66 | |
67 | memory_region_allocate_system_memory(&s->ram, NULL, "sabrelite.ram" , |
68 | machine->ram_size); |
69 | memory_region_add_subregion(get_system_memory(), FSL_IMX6_MMDC_ADDR, |
70 | &s->ram); |
71 | |
72 | { |
73 | /* |
74 | * TODO: Ideally we would expose the chip select and spi bus on the |
75 | * SoC object using alias properties; then we would not need to |
76 | * directly access the underlying spi device object. |
77 | */ |
78 | /* Add the sst25vf016b NOR FLASH memory to first SPI */ |
79 | Object *spi_dev; |
80 | |
81 | spi_dev = object_resolve_path_component(OBJECT(&s->soc), "spi1" ); |
82 | if (spi_dev) { |
83 | SSIBus *spi_bus; |
84 | |
85 | spi_bus = (SSIBus *)qdev_get_child_bus(DEVICE(spi_dev), "spi" ); |
86 | if (spi_bus) { |
87 | DeviceState *flash_dev; |
88 | qemu_irq cs_line; |
89 | DriveInfo *dinfo = drive_get_next(IF_MTD); |
90 | |
91 | flash_dev = ssi_create_slave_no_init(spi_bus, "sst25vf016b" ); |
92 | if (dinfo) { |
93 | qdev_prop_set_drive(flash_dev, "drive" , |
94 | blk_by_legacy_dinfo(dinfo), |
95 | &error_fatal); |
96 | } |
97 | qdev_init_nofail(flash_dev); |
98 | |
99 | cs_line = qdev_get_gpio_in_named(flash_dev, SSI_GPIO_CS, 0); |
100 | sysbus_connect_irq(SYS_BUS_DEVICE(spi_dev), 1, cs_line); |
101 | } |
102 | } |
103 | } |
104 | |
105 | sabrelite_binfo.ram_size = machine->ram_size; |
106 | sabrelite_binfo.nb_cpus = machine->smp.cpus; |
107 | sabrelite_binfo.secure_boot = true; |
108 | sabrelite_binfo.write_secondary_boot = sabrelite_write_secondary; |
109 | sabrelite_binfo.secondary_cpu_reset_hook = sabrelite_reset_secondary; |
110 | |
111 | if (!qtest_enabled()) { |
112 | arm_load_kernel(&s->soc.cpu[0], machine, &sabrelite_binfo); |
113 | } |
114 | } |
115 | |
116 | static void sabrelite_machine_init(MachineClass *mc) |
117 | { |
118 | mc->desc = "Freescale i.MX6 Quad SABRE Lite Board (Cortex A9)" ; |
119 | mc->init = sabrelite_init; |
120 | mc->max_cpus = FSL_IMX6_NUM_CPUS; |
121 | mc->ignore_memory_transaction_failures = true; |
122 | } |
123 | |
124 | DEFINE_MACHINE("sabrelite" , sabrelite_machine_init) |
125 | |