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authorJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-05-18 13:18:31 +0300
committerJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-05-18 13:42:15 +0300
commit437fd90c0250dee670290f9b714253671a990160 (patch)
treeb871786c360704244a07411c69fb58da9ead4a06 /qemu/hw/arm/bcm2835_peripherals.c
parent5bbd6fe9b8bab2a93e548c5a53b032d1939eec05 (diff)
These changes are the raw update to qemu-2.6.
Collission happened in the following patches: migration: do cleanup operation after completion(738df5b9) Bug fix.(1750c932f86) kvmclock: add a new function to update env->tsc.(b52baab2) The code provided by the patches was already in the upstreamed version. Change-Id: I3cc11841a6a76ae20887b2e245710199e1ea7f9a Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'qemu/hw/arm/bcm2835_peripherals.c')
-rw-r--r--qemu/hw/arm/bcm2835_peripherals.c312
1 files changed, 312 insertions, 0 deletions
diff --git a/qemu/hw/arm/bcm2835_peripherals.c b/qemu/hw/arm/bcm2835_peripherals.c
new file mode 100644
index 000000000..234d51843
--- /dev/null
+++ b/qemu/hw/arm/bcm2835_peripherals.c
@@ -0,0 +1,312 @@
+/*
+ * Raspberry Pi emulation (c) 2012 Gregory Estrade
+ * Upstreaming code cleanup [including bcm2835_*] (c) 2013 Jan Petrous
+ *
+ * Rasperry Pi 2 emulation and refactoring Copyright (c) 2015, Microsoft
+ * Written by Andrew Baumann
+ *
+ * This code is licensed under the GNU GPLv2 and later.
+ */
+
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "hw/arm/bcm2835_peripherals.h"
+#include "hw/misc/bcm2835_mbox_defs.h"
+#include "hw/arm/raspi_platform.h"
+#include "sysemu/char.h"
+
+/* Peripheral base address on the VC (GPU) system bus */
+#define BCM2835_VC_PERI_BASE 0x7e000000
+
+/* Capabilities for SD controller: no DMA, high-speed, default clocks etc. */
+#define BCM2835_SDHC_CAPAREG 0x52034b4
+
+static void bcm2835_peripherals_init(Object *obj)
+{
+ BCM2835PeripheralState *s = BCM2835_PERIPHERALS(obj);
+
+ /* Memory region for peripheral devices, which we export to our parent */
+ memory_region_init(&s->peri_mr, obj,"bcm2835-peripherals", 0x1000000);
+ object_property_add_child(obj, "peripheral-io", OBJECT(&s->peri_mr), NULL);
+ sysbus_init_mmio(SYS_BUS_DEVICE(s), &s->peri_mr);
+
+ /* Internal memory region for peripheral bus addresses (not exported) */
+ memory_region_init(&s->gpu_bus_mr, obj, "bcm2835-gpu", (uint64_t)1 << 32);
+ object_property_add_child(obj, "gpu-bus", OBJECT(&s->gpu_bus_mr), NULL);
+
+ /* Internal memory region for request/response communication with
+ * mailbox-addressable peripherals (not exported)
+ */
+ memory_region_init(&s->mbox_mr, obj, "bcm2835-mbox",
+ MBOX_CHAN_COUNT << MBOX_AS_CHAN_SHIFT);
+
+ /* Interrupt Controller */
+ object_initialize(&s->ic, sizeof(s->ic), TYPE_BCM2835_IC);
+ object_property_add_child(obj, "ic", OBJECT(&s->ic), NULL);
+ qdev_set_parent_bus(DEVICE(&s->ic), sysbus_get_default());
+
+ /* UART0 */
+ s->uart0 = SYS_BUS_DEVICE(object_new("pl011"));
+ object_property_add_child(obj, "uart0", OBJECT(s->uart0), NULL);
+ qdev_set_parent_bus(DEVICE(s->uart0), sysbus_get_default());
+
+ /* AUX / UART1 */
+ object_initialize(&s->aux, sizeof(s->aux), TYPE_BCM2835_AUX);
+ object_property_add_child(obj, "aux", OBJECT(&s->aux), NULL);
+ qdev_set_parent_bus(DEVICE(&s->aux), sysbus_get_default());
+
+ /* Mailboxes */
+ object_initialize(&s->mboxes, sizeof(s->mboxes), TYPE_BCM2835_MBOX);
+ object_property_add_child(obj, "mbox", OBJECT(&s->mboxes), NULL);
+ qdev_set_parent_bus(DEVICE(&s->mboxes), sysbus_get_default());
+
+ object_property_add_const_link(OBJECT(&s->mboxes), "mbox-mr",
+ OBJECT(&s->mbox_mr), &error_abort);
+
+ /* Framebuffer */
+ object_initialize(&s->fb, sizeof(s->fb), TYPE_BCM2835_FB);
+ object_property_add_child(obj, "fb", OBJECT(&s->fb), NULL);
+ object_property_add_alias(obj, "vcram-size", OBJECT(&s->fb), "vcram-size",
+ &error_abort);
+ qdev_set_parent_bus(DEVICE(&s->fb), sysbus_get_default());
+
+ object_property_add_const_link(OBJECT(&s->fb), "dma-mr",
+ OBJECT(&s->gpu_bus_mr), &error_abort);
+
+ /* Property channel */
+ object_initialize(&s->property, sizeof(s->property), TYPE_BCM2835_PROPERTY);
+ object_property_add_child(obj, "property", OBJECT(&s->property), NULL);
+ object_property_add_alias(obj, "board-rev", OBJECT(&s->property),
+ "board-rev", &error_abort);
+ qdev_set_parent_bus(DEVICE(&s->property), sysbus_get_default());
+
+ object_property_add_const_link(OBJECT(&s->property), "fb",
+ OBJECT(&s->fb), &error_abort);
+ object_property_add_const_link(OBJECT(&s->property), "dma-mr",
+ OBJECT(&s->gpu_bus_mr), &error_abort);
+
+ /* Extended Mass Media Controller */
+ object_initialize(&s->sdhci, sizeof(s->sdhci), TYPE_SYSBUS_SDHCI);
+ object_property_add_child(obj, "sdhci", OBJECT(&s->sdhci), NULL);
+ qdev_set_parent_bus(DEVICE(&s->sdhci), sysbus_get_default());
+
+ /* DMA Channels */
+ object_initialize(&s->dma, sizeof(s->dma), TYPE_BCM2835_DMA);
+ object_property_add_child(obj, "dma", OBJECT(&s->dma), NULL);
+ qdev_set_parent_bus(DEVICE(&s->dma), sysbus_get_default());
+
+ object_property_add_const_link(OBJECT(&s->dma), "dma-mr",
+ OBJECT(&s->gpu_bus_mr), &error_abort);
+}
+
+static void bcm2835_peripherals_realize(DeviceState *dev, Error **errp)
+{
+ BCM2835PeripheralState *s = BCM2835_PERIPHERALS(dev);
+ Object *obj;
+ MemoryRegion *ram;
+ Error *err = NULL;
+ uint32_t ram_size, vcram_size;
+ CharDriverState *chr;
+ int n;
+
+ obj = object_property_get_link(OBJECT(dev), "ram", &err);
+ if (obj == NULL) {
+ error_setg(errp, "%s: required ram link not found: %s",
+ __func__, error_get_pretty(err));
+ return;
+ }
+
+ ram = MEMORY_REGION(obj);
+ ram_size = memory_region_size(ram);
+
+ /* Map peripherals and RAM into the GPU address space. */
+ memory_region_init_alias(&s->peri_mr_alias, OBJECT(s),
+ "bcm2835-peripherals", &s->peri_mr, 0,
+ memory_region_size(&s->peri_mr));
+
+ memory_region_add_subregion_overlap(&s->gpu_bus_mr, BCM2835_VC_PERI_BASE,
+ &s->peri_mr_alias, 1);
+
+ /* RAM is aliased four times (different cache configurations) on the GPU */
+ for (n = 0; n < 4; n++) {
+ memory_region_init_alias(&s->ram_alias[n], OBJECT(s),
+ "bcm2835-gpu-ram-alias[*]", ram, 0, ram_size);
+ memory_region_add_subregion_overlap(&s->gpu_bus_mr, (hwaddr)n << 30,
+ &s->ram_alias[n], 0);
+ }
+
+ /* Interrupt Controller */
+ object_property_set_bool(OBJECT(&s->ic), true, "realized", &err);
+ if (err) {
+ error_propagate(errp, err);
+ return;
+ }
+
+ memory_region_add_subregion(&s->peri_mr, ARMCTRL_IC_OFFSET,
+ sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->ic), 0));
+ sysbus_pass_irq(SYS_BUS_DEVICE(s), SYS_BUS_DEVICE(&s->ic));
+
+ /* UART0 */
+ object_property_set_bool(OBJECT(s->uart0), true, "realized", &err);
+ if (err) {
+ error_propagate(errp, err);
+ return;
+ }
+
+ memory_region_add_subregion(&s->peri_mr, UART0_OFFSET,
+ sysbus_mmio_get_region(s->uart0, 0));
+ sysbus_connect_irq(s->uart0, 0,
+ qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
+ INTERRUPT_UART));
+
+ /* AUX / UART1 */
+ /* TODO: don't call qemu_char_get_next_serial() here, instead set
+ * chardev properties for each uart at the board level, once pl011
+ * (uart0) has been updated to avoid qemu_char_get_next_serial()
+ */
+ chr = qemu_char_get_next_serial();
+ if (chr == NULL) {
+ chr = qemu_chr_new("bcm2835.uart1", "null", NULL);
+ }
+ qdev_prop_set_chr(DEVICE(&s->aux), "chardev", chr);
+
+ object_property_set_bool(OBJECT(&s->aux), true, "realized", &err);
+ if (err) {
+ error_propagate(errp, err);
+ return;
+ }
+
+ memory_region_add_subregion(&s->peri_mr, UART1_OFFSET,
+ sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->aux), 0));
+ sysbus_connect_irq(SYS_BUS_DEVICE(&s->aux), 0,
+ qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
+ INTERRUPT_AUX));
+
+ /* Mailboxes */
+ object_property_set_bool(OBJECT(&s->mboxes), true, "realized", &err);
+ if (err) {
+ error_propagate(errp, err);
+ return;
+ }
+
+ memory_region_add_subregion(&s->peri_mr, ARMCTRL_0_SBM_OFFSET,
+ sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->mboxes), 0));
+ sysbus_connect_irq(SYS_BUS_DEVICE(&s->mboxes), 0,
+ qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_ARM_IRQ,
+ INTERRUPT_ARM_MAILBOX));
+
+ /* Framebuffer */
+ vcram_size = (uint32_t)object_property_get_int(OBJECT(s), "vcram-size",
+ &err);
+ if (err) {
+ error_propagate(errp, err);
+ return;
+ }
+
+ object_property_set_int(OBJECT(&s->fb), ram_size - vcram_size,
+ "vcram-base", &err);
+ if (err) {
+ error_propagate(errp, err);
+ return;
+ }
+
+ object_property_set_bool(OBJECT(&s->fb), true, "realized", &err);
+ if (err) {
+ error_propagate(errp, err);
+ return;
+ }
+
+ memory_region_add_subregion(&s->mbox_mr, MBOX_CHAN_FB << MBOX_AS_CHAN_SHIFT,
+ sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->fb), 0));
+ sysbus_connect_irq(SYS_BUS_DEVICE(&s->fb), 0,
+ qdev_get_gpio_in(DEVICE(&s->mboxes), MBOX_CHAN_FB));
+
+ /* Property channel */
+ object_property_set_bool(OBJECT(&s->property), true, "realized", &err);
+ if (err) {
+ error_propagate(errp, err);
+ return;
+ }
+
+ memory_region_add_subregion(&s->mbox_mr,
+ MBOX_CHAN_PROPERTY << MBOX_AS_CHAN_SHIFT,
+ sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->property), 0));
+ sysbus_connect_irq(SYS_BUS_DEVICE(&s->property), 0,
+ qdev_get_gpio_in(DEVICE(&s->mboxes), MBOX_CHAN_PROPERTY));
+
+ /* Extended Mass Media Controller */
+ object_property_set_int(OBJECT(&s->sdhci), BCM2835_SDHC_CAPAREG, "capareg",
+ &err);
+ if (err) {
+ error_propagate(errp, err);
+ return;
+ }
+
+ object_property_set_bool(OBJECT(&s->sdhci), true, "pending-insert-quirk",
+ &err);
+ if (err) {
+ error_propagate(errp, err);
+ return;
+ }
+
+ object_property_set_bool(OBJECT(&s->sdhci), true, "realized", &err);
+ if (err) {
+ error_propagate(errp, err);
+ return;
+ }
+
+ memory_region_add_subregion(&s->peri_mr, EMMC_OFFSET,
+ sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->sdhci), 0));
+ sysbus_connect_irq(SYS_BUS_DEVICE(&s->sdhci), 0,
+ qdev_get_gpio_in_named(DEVICE(&s->ic), BCM2835_IC_GPU_IRQ,
+ INTERRUPT_ARASANSDIO));
+ object_property_add_alias(OBJECT(s), "sd-bus", OBJECT(&s->sdhci), "sd-bus",
+ &err);
+ if (err) {
+ error_propagate(errp, err);
+ return;
+ }
+
+ /* DMA Channels */
+ object_property_set_bool(OBJECT(&s->dma), true, "realized", &err);
+ if (err) {
+ error_propagate(errp, err);
+ return;
+ }
+
+ memory_region_add_subregion(&s->peri_mr, DMA_OFFSET,
+ sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dma), 0));
+ memory_region_add_subregion(&s->peri_mr, DMA15_OFFSET,
+ sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->dma), 1));
+
+ for (n = 0; n <= 12; n++) {
+ sysbus_connect_irq(SYS_BUS_DEVICE(&s->dma), n,
+ qdev_get_gpio_in_named(DEVICE(&s->ic),
+ BCM2835_IC_GPU_IRQ,
+ INTERRUPT_DMA0 + n));
+ }
+}
+
+static void bcm2835_peripherals_class_init(ObjectClass *oc, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(oc);
+
+ dc->realize = bcm2835_peripherals_realize;
+ /* Reason: realize() method uses qemu_char_get_next_serial() */
+ dc->cannot_instantiate_with_device_add_yet = true;
+}
+
+static const TypeInfo bcm2835_peripherals_type_info = {
+ .name = TYPE_BCM2835_PERIPHERALS,
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(BCM2835PeripheralState),
+ .instance_init = bcm2835_peripherals_init,
+ .class_init = bcm2835_peripherals_class_init,
+};
+
+static void bcm2835_peripherals_register_types(void)
+{
+ type_register_static(&bcm2835_peripherals_type_info);
+}
+
+type_init(bcm2835_peripherals_register_types)