raspi: Raspberry Pi 3 support
This patch adds Raspberry Pi 3 support to hw/arm/raspi.c. The differences to Pi 2 are: - Firmware address - Board ID - Board revision The CPU is different too, but that's going to be configured as part of the machine default CPU when we introduce a new machine type. The patch was written from scratch by me but the logic is similar to Zoltán Baldaszti's previous work, which I used as a reference (with permission from the author): https://github.com/bztsrc/qemu-raspi3 Signed-off-by: Pekka Enberg <penberg@iki.fi> [PMM: fixed trailing whitespace on one line] Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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@ -5,6 +5,9 @@
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* Rasperry Pi 2 emulation Copyright (c) 2015, Microsoft
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* Rasperry Pi 2 emulation Copyright (c) 2015, Microsoft
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* Written by Andrew Baumann
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* Written by Andrew Baumann
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*
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*
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* Raspberry Pi 3 emulation Copyright (c) 2018 Zoltán Baldaszti
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* Upstream code cleanup (c) 2018 Pekka Enberg
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*
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* This code is licensed under the GNU GPLv2 and later.
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* This code is licensed under the GNU GPLv2 and later.
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*/
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*/
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@ -22,10 +25,11 @@
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#define SMPBOOT_ADDR 0x300 /* this should leave enough space for ATAGS */
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#define SMPBOOT_ADDR 0x300 /* this should leave enough space for ATAGS */
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#define MVBAR_ADDR 0x400 /* secure vectors */
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#define MVBAR_ADDR 0x400 /* secure vectors */
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#define BOARDSETUP_ADDR (MVBAR_ADDR + 0x20) /* board setup code */
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#define BOARDSETUP_ADDR (MVBAR_ADDR + 0x20) /* board setup code */
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#define FIRMWARE_ADDR 0x8000 /* Pi loads kernel.img here by default */
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#define FIRMWARE_ADDR_2 0x8000 /* Pi 2 loads kernel.img here by default */
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#define FIRMWARE_ADDR_3 0x80000 /* Pi 3 loads kernel.img here by default */
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/* Table of Linux board IDs for different Pi versions */
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/* Table of Linux board IDs for different Pi versions */
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static const int raspi_boardid[] = {[1] = 0xc42, [2] = 0xc43};
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static const int raspi_boardid[] = {[1] = 0xc42, [2] = 0xc43, [3] = 0xc44};
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typedef struct RasPiState {
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typedef struct RasPiState {
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BCM2836State soc;
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BCM2836State soc;
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@ -83,8 +87,8 @@ static void setup_boot(MachineState *machine, int version, size_t ram_size)
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binfo.secure_board_setup = true;
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binfo.secure_board_setup = true;
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binfo.secure_boot = true;
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binfo.secure_boot = true;
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/* Pi2 requires SMP setup */
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/* Pi2 and Pi3 requires SMP setup */
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if (version == 2) {
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if (version >= 2) {
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binfo.smp_loader_start = SMPBOOT_ADDR;
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binfo.smp_loader_start = SMPBOOT_ADDR;
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binfo.write_secondary_boot = write_smpboot;
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binfo.write_secondary_boot = write_smpboot;
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binfo.secondary_cpu_reset_hook = reset_secondary;
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binfo.secondary_cpu_reset_hook = reset_secondary;
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@ -94,15 +98,16 @@ static void setup_boot(MachineState *machine, int version, size_t ram_size)
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* the normal Linux boot process
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* the normal Linux boot process
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*/
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*/
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if (machine->firmware) {
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if (machine->firmware) {
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hwaddr firmware_addr = version == 3 ? FIRMWARE_ADDR_3 : FIRMWARE_ADDR_2;
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/* load the firmware image (typically kernel.img) */
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/* load the firmware image (typically kernel.img) */
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r = load_image_targphys(machine->firmware, FIRMWARE_ADDR,
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r = load_image_targphys(machine->firmware, firmware_addr,
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ram_size - FIRMWARE_ADDR);
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ram_size - firmware_addr);
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if (r < 0) {
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if (r < 0) {
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error_report("Failed to load firmware from %s", machine->firmware);
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error_report("Failed to load firmware from %s", machine->firmware);
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exit(1);
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exit(1);
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}
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}
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binfo.entry = FIRMWARE_ADDR;
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binfo.entry = firmware_addr;
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binfo.firmware_loaded = true;
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binfo.firmware_loaded = true;
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} else {
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} else {
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binfo.kernel_filename = machine->kernel_filename;
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binfo.kernel_filename = machine->kernel_filename;
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@ -113,7 +118,7 @@ static void setup_boot(MachineState *machine, int version, size_t ram_size)
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arm_load_kernel(ARM_CPU(first_cpu), &binfo);
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arm_load_kernel(ARM_CPU(first_cpu), &binfo);
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}
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}
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static void raspi2_init(MachineState *machine)
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static void raspi_init(MachineState *machine, int version)
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{
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{
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RasPiState *s = g_new0(RasPiState, 1);
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RasPiState *s = g_new0(RasPiState, 1);
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uint32_t vcram_size;
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uint32_t vcram_size;
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@ -139,7 +144,8 @@ static void raspi2_init(MachineState *machine)
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&error_abort);
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&error_abort);
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object_property_set_int(OBJECT(&s->soc), smp_cpus, "enabled-cpus",
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object_property_set_int(OBJECT(&s->soc), smp_cpus, "enabled-cpus",
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&error_abort);
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&error_abort);
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object_property_set_int(OBJECT(&s->soc), 0xa21041, "board-rev",
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int board_rev = version == 3 ? 0xa02082 : 0xa21041;
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object_property_set_int(OBJECT(&s->soc), board_rev, "board-rev",
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&error_abort);
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&error_abort);
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object_property_set_bool(OBJECT(&s->soc), true, "realized", &error_abort);
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object_property_set_bool(OBJECT(&s->soc), true, "realized", &error_abort);
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@ -157,7 +163,12 @@ static void raspi2_init(MachineState *machine)
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vcram_size = object_property_get_uint(OBJECT(&s->soc), "vcram-size",
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vcram_size = object_property_get_uint(OBJECT(&s->soc), "vcram-size",
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&error_abort);
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&error_abort);
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setup_boot(machine, 2, machine->ram_size - vcram_size);
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setup_boot(machine, version, machine->ram_size - vcram_size);
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}
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static void raspi2_init(MachineState *machine)
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{
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raspi_init(machine, 2);
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}
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}
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static void raspi2_machine_init(MachineClass *mc)
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static void raspi2_machine_init(MachineClass *mc)
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