diff options
Diffstat (limited to 'hw/display')
| -rw-r--r-- | hw/display/Makefile.objs | 3 | ||||
| -rw-r--r-- | hw/display/ramfb-standalone.c | 62 | ||||
| -rw-r--r-- | hw/display/ramfb.c | 95 | ||||
| -rw-r--r-- | hw/display/sm501.c | 15 |
4 files changed, 169 insertions, 6 deletions
diff --git a/hw/display/Makefile.objs b/hw/display/Makefile.objs index b5d97ab26d..fb8408c6d0 100644 --- a/hw/display/Makefile.objs +++ b/hw/display/Makefile.objs @@ -1,3 +1,6 @@ +common-obj-y += ramfb.o +common-obj-y += ramfb-standalone.o + common-obj-$(CONFIG_ADS7846) += ads7846.o common-obj-$(CONFIG_VGA_CIRRUS) += cirrus_vga.o common-obj-$(CONFIG_G364FB) += g364fb.o diff --git a/hw/display/ramfb-standalone.c b/hw/display/ramfb-standalone.c new file mode 100644 index 0000000000..c0d241ba01 --- /dev/null +++ b/hw/display/ramfb-standalone.c @@ -0,0 +1,62 @@ +#include "qemu/osdep.h" +#include "qapi/error.h" +#include "hw/loader.h" +#include "hw/isa/isa.h" +#include "hw/display/ramfb.h" +#include "ui/console.h" +#include "sysemu/sysemu.h" + +#define RAMFB(obj) OBJECT_CHECK(RAMFBStandaloneState, (obj), TYPE_RAMFB_DEVICE) + +typedef struct RAMFBStandaloneState { + SysBusDevice parent_obj; + QemuConsole *con; + RAMFBState *state; +} RAMFBStandaloneState; + +static void display_update_wrapper(void *dev) +{ + RAMFBStandaloneState *ramfb = RAMFB(dev); + + if (0 /* native driver active */) { + /* non-standalone device would run native display update here */; + } else { + ramfb_display_update(ramfb->con, ramfb->state); + } +} + +static const GraphicHwOps wrapper_ops = { + .gfx_update = display_update_wrapper, +}; + +static void ramfb_realizefn(DeviceState *dev, Error **errp) +{ + RAMFBStandaloneState *ramfb = RAMFB(dev); + + ramfb->con = graphic_console_init(dev, 0, &wrapper_ops, dev); + ramfb->state = ramfb_setup(errp); +} + +static void ramfb_class_initfn(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories); + dc->realize = ramfb_realizefn; + dc->desc = "ram framebuffer standalone device"; + dc->user_creatable = true; +} + +static const TypeInfo ramfb_info = { + .name = TYPE_RAMFB_DEVICE, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(RAMFBStandaloneState), + .class_init = ramfb_class_initfn, +}; + +static void ramfb_register_types(void) +{ + type_register_static(&ramfb_info); +} + +type_init(ramfb_register_types) diff --git a/hw/display/ramfb.c b/hw/display/ramfb.c new file mode 100644 index 0000000000..6867bce8ae --- /dev/null +++ b/hw/display/ramfb.c @@ -0,0 +1,95 @@ +/* + * early boot framebuffer in guest ram + * configured using fw_cfg + * + * Copyright Red Hat, Inc. 2017 + * + * Author: + * Gerd Hoffmann <kraxel@redhat.com> + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ +#include "qemu/osdep.h" +#include "qapi/error.h" +#include "hw/loader.h" +#include "hw/display/ramfb.h" +#include "ui/console.h" +#include "sysemu/sysemu.h" + +struct QEMU_PACKED RAMFBCfg { + uint64_t addr; + uint32_t fourcc; + uint32_t flags; + uint32_t width; + uint32_t height; + uint32_t stride; +}; + +struct RAMFBState { + DisplaySurface *ds; + uint32_t width, height; + struct RAMFBCfg cfg; +}; + +static void ramfb_fw_cfg_write(void *dev, off_t offset, size_t len) +{ + RAMFBState *s = dev; + void *framebuffer; + uint32_t stride, fourcc, format; + hwaddr addr, length; + + s->width = be32_to_cpu(s->cfg.width); + s->height = be32_to_cpu(s->cfg.height); + stride = be32_to_cpu(s->cfg.stride); + fourcc = be32_to_cpu(s->cfg.fourcc); + addr = be64_to_cpu(s->cfg.addr); + length = stride * s->height; + format = qemu_drm_format_to_pixman(fourcc); + + fprintf(stderr, "%s: %dx%d @ 0x%" PRIx64 "\n", __func__, + s->width, s->height, addr); + framebuffer = address_space_map(&address_space_memory, + addr, &length, false, + MEMTXATTRS_UNSPECIFIED); + if (!framebuffer || length < stride * s->height) { + s->width = 0; + s->height = 0; + return; + } + s->ds = qemu_create_displaysurface_from(s->width, s->height, + format, stride, framebuffer); +} + +void ramfb_display_update(QemuConsole *con, RAMFBState *s) +{ + if (!s->width || !s->height) { + return; + } + + if (s->ds) { + dpy_gfx_replace_surface(con, s->ds); + s->ds = NULL; + } + + /* simple full screen update */ + dpy_gfx_update_full(con); +} + +RAMFBState *ramfb_setup(Error **errp) +{ + FWCfgState *fw_cfg = fw_cfg_find(); + RAMFBState *s; + + if (!fw_cfg || !fw_cfg->dma_enabled) { + error_setg(errp, "ramfb device requires fw_cfg with DMA"); + return NULL; + } + + s = g_new0(RAMFBState, 1); + + fw_cfg_add_file_callback(fw_cfg, "etc/ramfb", + NULL, ramfb_fw_cfg_write, s, + &s->cfg, sizeof(s->cfg), false); + return s; +} diff --git a/hw/display/sm501.c b/hw/display/sm501.c index e47be99451..ca0840f6fa 100644 --- a/hw/display/sm501.c +++ b/hw/display/sm501.c @@ -836,27 +836,30 @@ static void sm501_system_config_write(void *opaque, hwaddr addr, switch (addr) { case SM501_SYSTEM_CONTROL: - s->system_control = value & 0xE300B8F7; + s->system_control &= 0x10DB0000; + s->system_control |= value & 0xEF00B8F7; break; case SM501_MISC_CONTROL: - s->misc_control = value & 0xFF7FFF20; + s->misc_control &= 0xEF; + s->misc_control |= value & 0xFF7FFF10; break; case SM501_GPIO31_0_CONTROL: s->gpio_31_0_control = value; break; case SM501_GPIO63_32_CONTROL: - s->gpio_63_32_control = value; + s->gpio_63_32_control = value & 0xFF80FFFF; break; case SM501_DRAM_CONTROL: s->local_mem_size_index = (value >> 13) & 0x7; /* TODO : check validity of size change */ - s->dram_control |= value & 0x7FFFFFC3; + s->dram_control &= 0x80000000; + s->dram_control |= value & 0x7FFFFFC3; break; case SM501_ARBTRTN_CONTROL: - s->arbitration_control = value & 0x37777777; + s->arbitration_control = value & 0x37777777; break; case SM501_IRQ_MASK: - s->irq_mask = value; + s->irq_mask = value & 0xFFDF3F5F; break; case SM501_MISC_TIMING: s->misc_timing = value & 0xF31F1FFF; |