* Rasperry Pi 2 emulation Copyright (c) 2015, Microsoft
* Written by Andrew Baumann
*
+ * Raspberry Pi 3 emulation Copyright (c) 2018 Zoltán Baldaszti
+ * Upstream code cleanup (c) 2018 Pekka Enberg
+ *
* This code is licensed under the GNU GPLv2 and later.
*/
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "qemu-common.h"
+#include "cpu.h"
#include "hw/arm/bcm2836.h"
#include "qemu/error-report.h"
#include "hw/boards.h"
#define SMPBOOT_ADDR 0x300 /* this should leave enough space for ATAGS */
#define MVBAR_ADDR 0x400 /* secure vectors */
#define BOARDSETUP_ADDR (MVBAR_ADDR + 0x20) /* board setup code */
-#define FIRMWARE_ADDR 0x8000 /* Pi loads kernel.img here by default */
+#define FIRMWARE_ADDR_2 0x8000 /* Pi 2 loads kernel.img here by default */
+#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};
+static const int raspi_boardid[] = {[1] = 0xc42, [2] = 0xc43, [3] = 0xc44};
typedef struct RasPiState {
- BCM2836State soc;
+ BCM283XState soc;
MemoryRegion ram;
} RasPiState;
info->smp_loader_start);
}
+static void write_smpboot64(ARMCPU *cpu, const struct arm_boot_info *info)
+{
+ /* Unlike the AArch32 version we don't need to call the board setup hook.
+ * The mechanism for doing the spin-table is also entirely different.
+ * We must have four 64-bit fields at absolute addresses
+ * 0xd8, 0xe0, 0xe8, 0xf0 in RAM, which are the flag variables for
+ * our CPUs, and which we must ensure are zero initialized before
+ * the primary CPU goes into the kernel. We put these variables inside
+ * a rom blob, so that the reset for ROM contents zeroes them for us.
+ */
+ static const uint32_t smpboot[] = {
+ 0xd2801b05, /* mov x5, 0xd8 */
+ 0xd53800a6, /* mrs x6, mpidr_el1 */
+ 0x924004c6, /* and x6, x6, #0x3 */
+ 0xd503205f, /* spin: wfe */
+ 0xf86678a4, /* ldr x4, [x5,x6,lsl #3] */
+ 0xb4ffffc4, /* cbz x4, spin */
+ 0xd2800000, /* mov x0, #0x0 */
+ 0xd2800001, /* mov x1, #0x0 */
+ 0xd2800002, /* mov x2, #0x0 */
+ 0xd2800003, /* mov x3, #0x0 */
+ 0xd61f0080, /* br x4 */
+ };
+
+ static const uint64_t spintables[] = {
+ 0, 0, 0, 0
+ };
+
+ rom_add_blob_fixed("raspi_smpboot", smpboot, sizeof(smpboot),
+ info->smp_loader_start);
+ rom_add_blob_fixed("raspi_spintables", spintables, sizeof(spintables),
+ SPINTABLE_ADDR);
+}
+
static void write_board_setup(ARMCPU *cpu, const struct arm_boot_info *info)
{
arm_write_secure_board_setup_dummy_smc(cpu, info, MVBAR_ADDR);
binfo.board_id = raspi_boardid[version];
binfo.ram_size = ram_size;
binfo.nb_cpus = smp_cpus;
- binfo.board_setup_addr = BOARDSETUP_ADDR;
- binfo.write_board_setup = write_board_setup;
- binfo.secure_board_setup = true;
- binfo.secure_boot = true;
- /* Pi2 requires SMP setup */
- if (version == 2) {
+ if (version <= 2) {
+ /* The rpi1 and 2 require some custom setup code to run in Secure
+ * mode before booting a kernel (to set up the SMC vectors so
+ * that we get a no-op SMC; this is used by Linux to call the
+ * firmware for some cache maintenance operations.
+ * The rpi3 doesn't need this.
+ */
+ binfo.board_setup_addr = BOARDSETUP_ADDR;
+ binfo.write_board_setup = write_board_setup;
+ binfo.secure_board_setup = true;
+ binfo.secure_boot = true;
+ }
+
+ /* Pi2 and Pi3 requires SMP setup */
+ if (version >= 2) {
binfo.smp_loader_start = SMPBOOT_ADDR;
- binfo.write_secondary_boot = write_smpboot;
+ if (version == 2) {
+ binfo.write_secondary_boot = write_smpboot;
+ } else {
+ binfo.write_secondary_boot = write_smpboot64;
+ }
binfo.secondary_cpu_reset_hook = reset_secondary;
}
* the normal Linux boot process
*/
if (machine->firmware) {
+ hwaddr firmware_addr = version == 3 ? FIRMWARE_ADDR_3 : FIRMWARE_ADDR_2;
/* load the firmware image (typically kernel.img) */
- r = load_image_targphys(machine->firmware, FIRMWARE_ADDR,
- ram_size - FIRMWARE_ADDR);
+ r = load_image_targphys(machine->firmware, firmware_addr,
+ ram_size - firmware_addr);
if (r < 0) {
error_report("Failed to load firmware from %s", machine->firmware);
exit(1);
}
- binfo.entry = FIRMWARE_ADDR;
+ binfo.entry = firmware_addr;
binfo.firmware_loaded = true;
} else {
binfo.kernel_filename = machine->kernel_filename;
arm_load_kernel(ARM_CPU(first_cpu), &binfo);
}
-static void raspi2_init(MachineState *machine)
+static void raspi_init(MachineState *machine, int version)
{
RasPiState *s = g_new0(RasPiState, 1);
+ uint32_t vcram_size;
+ DriveInfo *di;
+ BlockBackend *blk;
+ BusState *bus;
+ DeviceState *carddev;
- object_initialize(&s->soc, sizeof(s->soc), TYPE_BCM2836);
+ object_initialize(&s->soc, sizeof(s->soc),
+ version == 3 ? TYPE_BCM2837 : TYPE_BCM2836);
object_property_add_child(OBJECT(machine), "soc", OBJECT(&s->soc),
&error_abort);
&error_abort);
object_property_set_int(OBJECT(&s->soc), smp_cpus, "enabled-cpus",
&error_abort);
- object_property_set_int(OBJECT(&s->soc), 0xa21041, "board-rev",
+ 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);
- setup_boot(machine, 2, machine->ram_size);
+ /* Create and plug in the SD cards */
+ di = drive_get_next(IF_SD);
+ blk = di ? blk_by_legacy_dinfo(di) : NULL;
+ bus = qdev_get_child_bus(DEVICE(&s->soc), "sd-bus");
+ if (bus == NULL) {
+ error_report("No SD bus found in SOC object");
+ exit(1);
+ }
+ carddev = qdev_create(bus, TYPE_SD_CARD);
+ qdev_prop_set_drive(carddev, "drive", blk, &error_fatal);
+ object_property_set_bool(OBJECT(carddev), true, "realized", &error_fatal);
+
+ vcram_size = object_property_get_uint(OBJECT(&s->soc), "vcram-size",
+ &error_abort);
+ setup_boot(machine, version, machine->ram_size - vcram_size);
+}
+
+static void raspi2_init(MachineState *machine)
+{
+ raspi_init(machine, 2);
}
static void raspi2_machine_init(MachineClass *mc)
mc->no_parallel = 1;
mc->no_floppy = 1;
mc->no_cdrom = 1;
- mc->max_cpus = BCM2836_NCPUS;
-
- /* XXX: Temporary restriction in RAM size from the full 1GB. Since
- * we do not yet support the framebuffer / GPU, we need to limit
- * RAM usable by the OS to sit below the peripherals.
- */
- mc->default_ram_size = 0x3F000000; /* BCM2836_PERI_BASE */
+ mc->max_cpus = BCM283X_NCPUS;
+ mc->min_cpus = BCM283X_NCPUS;
+ mc->default_cpus = BCM283X_NCPUS;
+ mc->default_ram_size = 1024 * 1024 * 1024;
+ mc->ignore_memory_transaction_failures = true;
};
DEFINE_MACHINE("raspi2", raspi2_machine_init)
+
+#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 = 1024 * 1024 * 1024;
+}
+DEFINE_MACHINE("raspi3", raspi3_machine_init)
+#endif
projects / qemu.git / blobdiff