diff options
Diffstat (limited to 'hw/arm/raspi.c')
| -rw-r--r-- | hw/arm/raspi.c | 190 |
1 files changed, 143 insertions, 47 deletions
diff --git a/hw/arm/raspi.c b/hw/arm/raspi.c index 3996f6c..90ad9b8 100644 --- a/hw/arm/raspi.c +++ b/hw/arm/raspi.c @@ -13,9 +13,11 @@ #include "qemu/osdep.h" #include "qemu/units.h" +#include "qemu/cutils.h" #include "qapi/error.h" #include "cpu.h" #include "hw/arm/bcm2836.h" +#include "hw/registerfields.h" #include "qemu/error-report.h" #include "hw/boards.h" #include "hw/loader.h" @@ -29,13 +31,104 @@ #define FIRMWARE_ADDR_3 0x80000 /* Pi 3 loads kernel.img here by default */ #define SPINTABLE_ADDR 0xd8 /* Pi 3 bootloader spintable */ -/* Table of Linux board IDs for different Pi versions */ -static const int raspi_boardid[] = {[1] = 0xc42, [2] = 0xc43, [3] = 0xc44}; +/* Registered machine type (matches RPi Foundation bootloader and U-Boot) */ +#define MACH_TYPE_BCM2708 3138 -typedef struct RasPiState { +typedef struct RaspiMachineState { + /*< private >*/ + MachineState parent_obj; + /*< public >*/ BCM283XState soc; MemoryRegion ram; -} RasPiState; +} RaspiMachineState; + +typedef struct RaspiMachineClass { + /*< private >*/ + MachineClass parent_obj; + /*< public >*/ + uint32_t board_rev; +} RaspiMachineClass; + +#define TYPE_RASPI_MACHINE MACHINE_TYPE_NAME("raspi-common") +#define RASPI_MACHINE(obj) \ + OBJECT_CHECK(RaspiMachineState, (obj), TYPE_RASPI_MACHINE) + +#define RASPI_MACHINE_CLASS(klass) \ + OBJECT_CLASS_CHECK(RaspiMachineClass, (klass), TYPE_RASPI_MACHINE) +#define RASPI_MACHINE_GET_CLASS(obj) \ + OBJECT_GET_CLASS(RaspiMachineClass, (obj), TYPE_RASPI_MACHINE) + +/* + * Board revision codes: + * www.raspberrypi.org/documentation/hardware/raspberrypi/revision-codes/ + */ +FIELD(REV_CODE, REVISION, 0, 4); +FIELD(REV_CODE, TYPE, 4, 8); +FIELD(REV_CODE, PROCESSOR, 12, 4); +FIELD(REV_CODE, MANUFACTURER, 16, 4); +FIELD(REV_CODE, MEMORY_SIZE, 20, 3); +FIELD(REV_CODE, STYLE, 23, 1); + +static uint64_t board_ram_size(uint32_t board_rev) +{ + assert(FIELD_EX32(board_rev, REV_CODE, STYLE)); /* Only new style */ + return 256 * MiB << FIELD_EX32(board_rev, REV_CODE, MEMORY_SIZE); +} + +static int board_processor_id(uint32_t board_rev) +{ + assert(FIELD_EX32(board_rev, REV_CODE, STYLE)); /* Only new style */ + return FIELD_EX32(board_rev, REV_CODE, PROCESSOR); +} + +static int board_version(uint32_t board_rev) +{ + return board_processor_id(board_rev) + 1; +} + +static const char *board_soc_type(uint32_t board_rev) +{ + static const char *soc_types[] = { + NULL, TYPE_BCM2836, TYPE_BCM2837, + }; + int proc_id = board_processor_id(board_rev); + + if (proc_id >= ARRAY_SIZE(soc_types) || !soc_types[proc_id]) { + error_report("Unsupported processor id '%d' (board revision: 0x%x)", + proc_id, board_rev); + exit(1); + } + return soc_types[proc_id]; +} + +static int cores_count(uint32_t board_rev) +{ + static const int soc_cores_count[] = { + 0, BCM283X_NCPUS, BCM283X_NCPUS, + }; + int proc_id = board_processor_id(board_rev); + + if (proc_id >= ARRAY_SIZE(soc_cores_count) || !soc_cores_count[proc_id]) { + error_report("Unsupported processor id '%d' (board revision: 0x%x)", + proc_id, board_rev); + exit(1); + } + return soc_cores_count[proc_id]; +} + +static const char *board_type(uint32_t board_rev) +{ + static const char *types[] = { + "A", "B", "A+", "B+", "2B", "Alpha", "CM1", NULL, "3B", "Zero", + "CM3", NULL, "Zero W", "3B+", "3A+", NULL, "CM3+", "4B", + }; + assert(FIELD_EX32(board_rev, REV_CODE, STYLE)); /* Only new style */ + int bt = FIELD_EX32(board_rev, REV_CODE, TYPE); + if (bt >= ARRAY_SIZE(types) || !types[bt]) { + return "Unknown"; + } + return types[bt]; +} static void write_smpboot(ARMCPU *cpu, const struct arm_boot_info *info) { @@ -116,7 +209,7 @@ static void setup_boot(MachineState *machine, int version, size_t ram_size) static struct arm_boot_info binfo; int r; - binfo.board_id = raspi_boardid[version]; + binfo.board_id = MACH_TYPE_BCM2708; binfo.ram_size = ram_size; binfo.nb_cpus = machine->smp.cpus; @@ -164,25 +257,26 @@ static void setup_boot(MachineState *machine, int version, size_t ram_size) arm_load_kernel(ARM_CPU(first_cpu), machine, &binfo); } -static void raspi_init(MachineState *machine, int version) +static void raspi_machine_init(MachineState *machine) { - RasPiState *s = g_new0(RasPiState, 1); + RaspiMachineClass *mc = RASPI_MACHINE_GET_CLASS(machine); + RaspiMachineState *s = RASPI_MACHINE(machine); + uint32_t board_rev = mc->board_rev; + int version = board_version(board_rev); + uint64_t ram_size = board_ram_size(board_rev); uint32_t vcram_size; DriveInfo *di; BlockBackend *blk; BusState *bus; DeviceState *carddev; - if (machine->ram_size > 1 * GiB) { - error_report("Requested ram size is too large for this machine: " - "maximum is 1GB"); + if (machine->ram_size != ram_size) { + char *size_str = size_to_str(ram_size); + error_report("Invalid RAM size, should be %s", size_str); + g_free(size_str); exit(1); } - object_initialize_child(OBJECT(machine), "soc", &s->soc, sizeof(s->soc), - version == 3 ? TYPE_BCM2837 : TYPE_BCM2836, - &error_abort, NULL); - /* Allocate and map RAM */ memory_region_allocate_system_memory(&s->ram, OBJECT(machine), "ram", machine->ram_size); @@ -190,9 +284,10 @@ static void raspi_init(MachineState *machine, int version) memory_region_add_subregion_overlap(get_system_memory(), 0, &s->ram, 0); /* Setup the SOC */ + object_initialize_child(OBJECT(machine), "soc", &s->soc, sizeof(s->soc), + board_soc_type(board_rev), &error_abort, NULL); object_property_add_const_link(OBJECT(&s->soc), "ram", OBJECT(&s->ram), &error_abort); - int board_rev = version == 3 ? 0xa02082 : 0xa21041; object_property_set_int(OBJECT(&s->soc), board_rev, "board-rev", &error_abort); object_property_set_bool(OBJECT(&s->soc), true, "realized", &error_abort); @@ -214,45 +309,46 @@ static void raspi_init(MachineState *machine, int version) setup_boot(machine, version, machine->ram_size - vcram_size); } -static void raspi2_init(MachineState *machine) +static void raspi_machine_class_init(ObjectClass *oc, void *data) { - raspi_init(machine, 2); -} + MachineClass *mc = MACHINE_CLASS(oc); + RaspiMachineClass *rmc = RASPI_MACHINE_CLASS(oc); + uint32_t board_rev = (uint32_t)(uintptr_t)data; -static void raspi2_machine_init(MachineClass *mc) -{ - mc->desc = "Raspberry Pi 2"; - mc->init = raspi2_init; + rmc->board_rev = board_rev; + mc->desc = g_strdup_printf("Raspberry Pi %s", board_type(board_rev)); + mc->init = raspi_machine_init; mc->block_default_type = IF_SD; mc->no_parallel = 1; mc->no_floppy = 1; mc->no_cdrom = 1; - mc->max_cpus = BCM283X_NCPUS; - mc->min_cpus = BCM283X_NCPUS; - mc->default_cpus = BCM283X_NCPUS; - mc->default_ram_size = 1 * GiB; - mc->ignore_memory_transaction_failures = true; + mc->default_cpus = mc->min_cpus = mc->max_cpus = cores_count(board_rev); + mc->default_ram_size = board_ram_size(board_rev); + if (board_version(board_rev) == 2) { + mc->ignore_memory_transaction_failures = true; + } }; -DEFINE_MACHINE("raspi2", raspi2_machine_init) +static const TypeInfo raspi_machine_types[] = { + { + .name = MACHINE_TYPE_NAME("raspi2"), + .parent = TYPE_RASPI_MACHINE, + .class_init = raspi_machine_class_init, + .class_data = (void *)0xa21041, #ifdef TARGET_AARCH64 -static void raspi3_init(MachineState *machine) -{ - raspi_init(machine, 3); -} - -static void raspi3_machine_init(MachineClass *mc) -{ - mc->desc = "Raspberry Pi 3"; - mc->init = raspi3_init; - mc->block_default_type = IF_SD; - mc->no_parallel = 1; - mc->no_floppy = 1; - mc->no_cdrom = 1; - mc->max_cpus = BCM283X_NCPUS; - mc->min_cpus = BCM283X_NCPUS; - mc->default_cpus = BCM283X_NCPUS; - mc->default_ram_size = 1 * GiB; -} -DEFINE_MACHINE("raspi3", raspi3_machine_init) + }, { + .name = MACHINE_TYPE_NAME("raspi3"), + .parent = TYPE_RASPI_MACHINE, + .class_init = raspi_machine_class_init, + .class_data = (void *)0xa02082, #endif + }, { + .name = TYPE_RASPI_MACHINE, + .parent = TYPE_MACHINE, + .instance_size = sizeof(RaspiMachineState), + .class_size = sizeof(RaspiMachineClass), + .abstract = true, + } +}; + +DEFINE_TYPES(raspi_machine_types) |