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[Qemu-devel] [PATCH 1/2] sun4m: Add Sun CG3 framebuffer and correspondin


From: Mark Cave-Ayland
Subject: [Qemu-devel] [PATCH 1/2] sun4m: Add Sun CG3 framebuffer and corresponding OpenBIOS FCode ROM
Date: Tue, 15 Oct 2013 21:19:53 +0100

The CG3 framebuffer is a simple 8-bit framebuffer for use with operating
systems such as early Solaris that do not have drivers for TCX.

Signed-off-by: Mark Cave-Ayland <address@hidden>
CC: Blue Swirl <address@hidden>
CC: Bob Breuer <address@hidden>
CC: Artyom Tarasenko <address@hidden>
---
 Makefile                          |    2 +-
 default-configs/sparc-softmmu.mak |    1 +
 hw/display/Makefile.objs          |    1 +
 hw/display/cg3.c                  |  359 +++++++++++++++++++++++++++++++++++++
 pc-bios/QEMU,cgthree.bin          |  Bin 0 -> 682 bytes
 pc-bios/README                    |    4 +-
 6 files changed, 364 insertions(+), 3 deletions(-)
 create mode 100644 hw/display/cg3.c
 create mode 100644 pc-bios/QEMU,cgthree.bin

diff --git a/Makefile b/Makefile
index 10ede3d..77b5cb5 100644
--- a/Makefile
+++ b/Makefile
@@ -287,7 +287,7 @@ ifdef INSTALL_BLOBS
 BLOBS=bios.bin sgabios.bin vgabios.bin vgabios-cirrus.bin \
 vgabios-stdvga.bin vgabios-vmware.bin vgabios-qxl.bin \
 acpi-dsdt.aml q35-acpi-dsdt.aml \
-ppc_rom.bin openbios-sparc32 openbios-sparc64 openbios-ppc QEMU,tcx.bin \
+ppc_rom.bin openbios-sparc32 openbios-sparc64 openbios-ppc QEMU,tcx.bin 
QEMU,cgthree.bin \
 pxe-e1000.rom pxe-eepro100.rom pxe-ne2k_pci.rom \
 pxe-pcnet.rom pxe-rtl8139.rom pxe-virtio.rom \
 efi-e1000.rom efi-eepro100.rom efi-ne2k_pci.rom \
diff --git a/default-configs/sparc-softmmu.mak 
b/default-configs/sparc-softmmu.mak
index 8fc93dd..ab796b3 100644
--- a/default-configs/sparc-softmmu.mak
+++ b/default-configs/sparc-softmmu.mak
@@ -10,6 +10,7 @@ CONFIG_EMPTY_SLOT=y
 CONFIG_PCNET_COMMON=y
 CONFIG_LANCE=y
 CONFIG_TCX=y
+CONFIG_CG3=y
 CONFIG_SLAVIO=y
 CONFIG_CS4231=y
 CONFIG_GRLIB=y
diff --git a/hw/display/Makefile.objs b/hw/display/Makefile.objs
index 540df82..7ed76a9 100644
--- a/hw/display/Makefile.objs
+++ b/hw/display/Makefile.objs
@@ -28,6 +28,7 @@ obj-$(CONFIG_OMAP) += omap_lcdc.o
 obj-$(CONFIG_PXA2XX) += pxa2xx_lcd.o
 obj-$(CONFIG_SM501) += sm501.o
 obj-$(CONFIG_TCX) += tcx.o
+obj-$(CONFIG_CG3) += cg3.o
 
 obj-$(CONFIG_VGA) += vga.o
 
diff --git a/hw/display/cg3.c b/hw/display/cg3.c
new file mode 100644
index 0000000..b09bf23
--- /dev/null
+++ b/hw/display/cg3.c
@@ -0,0 +1,359 @@
+/*
+ * QEMU CG3 Frame buffer
+ *
+ * Copyright (c) 2012 Bob Breuer
+ * Copyright (c) 2013 Mark Cave-Ayland
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to 
deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 
FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "qemu-common.h"
+#include "ui/console.h"
+#include "hw/sysbus.h"
+#include "hw/loader.h"
+
+/* #define DEBUG_CG3 */
+
+#define CG3_ROM_FILE  "QEMU,cgthree.bin"
+#define FCODE_MAX_ROM_SIZE 0x10000
+
+#define CG3_REG_SIZE  0x20
+#define CG3_VRAM_SIZE 0x100000
+#define CG3_VRAM_OFFSET 0x800000
+
+#ifdef DEBUG_CG3
+#define DPRINTF(fmt, ...)                                       \
+    printf("CG3: " fmt , ## __VA_ARGS__)
+#else
+#define DPRINTF(fmt, ...)
+#endif
+
+#define TYPE_CG3 "SUNW,cgthree"
+#define CG3(obj) OBJECT_CHECK(CG3State, (obj), TYPE_CG3)
+
+typedef struct CG3State {
+    SysBusDevice parent_obj;
+
+    QemuConsole *con;
+    qemu_irq irq;
+    hwaddr prom_addr;
+    MemoryRegion vram_mem;
+    MemoryRegion rom;
+    MemoryRegion reg;
+    uint32_t vram_size;
+    int full_update;
+    uint8_t regs[16];
+    uint8_t r[256], g[256], b[256];
+    uint16_t width, height, depth;
+    uint8_t dac_index, dac_state;
+} CG3State;
+
+static void cg3_update_display(void *opaque)
+{
+    CG3State *s = opaque;
+    DisplaySurface *surface = qemu_console_surface(s->con);
+    const uint8_t *pix;
+    uint32_t *data;
+    uint32_t dval;
+    int x, y, y_start;
+    unsigned int width, height;
+    ram_addr_t page, page_min, page_max;
+
+    if (surface_bits_per_pixel(surface) != 32) {
+        return;
+    }
+    width = s->width;
+    height = s->height;
+
+    y_start = -1;
+    page_min = -1;
+    page_max = 0;
+    page = 0;
+    pix = memory_region_get_ram_ptr(&s->vram_mem);
+    data = (uint32_t *)surface_data(surface);
+
+    for (y = 0; y < height; y++) {
+        int update = s->full_update;
+
+        page = (y * width) & TARGET_PAGE_MASK;
+        update |= memory_region_get_dirty(&s->vram_mem, page, page + width,
+                                          DIRTY_MEMORY_VGA);
+        if (update) {
+            if (y_start < 0) {
+                y_start = y;
+            }
+            if (page < page_min) {
+                page_min = page;
+            }
+            if (page > page_max) {
+                page_max = page;
+            }
+
+            for (x = 0; x < width; x++) {
+                dval = *pix++;
+                dval = (s->r[dval] << 16) | (s->g[dval] << 8) | s->b[dval];
+                *data++ = dval;
+            }
+        } else {
+            if (y_start >= 0) {
+                dpy_gfx_update(s->con, 0, y_start, s->width, y - y_start);
+                y_start = -1;
+            }
+            pix += width;
+            data += width;
+        }
+    }
+    s->full_update = 0;
+    if (y_start >= 0) {
+        dpy_gfx_update(s->con, 0, y_start, s->width, y - y_start);
+    }
+    if (page_max >= page_min) {
+        memory_region_reset_dirty(&s->vram_mem,
+                              page_min, page_max - page_min + TARGET_PAGE_SIZE,
+                              DIRTY_MEMORY_VGA);
+    }
+    /* vsync interrupt? */
+    if (s->regs[0] & 0x80) {
+        s->regs[1] |= 0x80;
+        qemu_irq_raise(s->irq);
+    }
+}
+
+static void cg3_invalidate_display(void *opaque)
+{
+    CG3State *s = opaque;
+
+    memory_region_set_dirty(&s->vram_mem, 0, CG3_VRAM_SIZE);
+}
+
+static uint64_t cg3_reg_read(void *opaque, hwaddr addr, unsigned size)
+{
+    CG3State *s = opaque;
+    int val;
+
+    switch (addr) {
+    case 0x10:
+        val = s->regs[0];
+        break;
+    case 0x11:
+        val = s->regs[1] | 0x71; /* monitor ID 7, board type = 1 (color) */
+        break;
+    case 0x12 ... 0x1f:
+        val = s->regs[addr - 0x10];
+        break;
+    default:
+        val = 0;
+        break;
+    }
+    DPRINTF("read %02x from reg %x\n", val, (int)addr);
+    return val;
+}
+
+static void cg3_reg_write(void *opaque, hwaddr addr, uint64_t val,
+                          unsigned size)
+{
+    CG3State *s = opaque;
+    uint8_t regval;
+    int i;
+
+    DPRINTF("write %02lx to reg %x size %d\n", val, (int)addr, size);
+
+    switch (addr) {
+    case 0:
+        s->dac_index = val;
+        s->dac_state = 0;
+        break;
+    case 4:
+        /* This register can be written to as either a long word or a byte.
+         * According to the SBus specification, byte transfers are placed
+         * in bits 31-28 */
+        if (size == 1) {
+            val <<= 24;
+        }
+
+        for (i = 0; i < size; i++) {
+            regval = val >> 24;
+
+            switch (s->dac_state) {
+            case 0:
+                s->r[s->dac_index] = regval;
+                s->dac_state++;
+                break;
+            case 1:
+                s->g[s->dac_index] = regval;
+                s->dac_state++;
+                break;
+            case 2:
+                s->b[s->dac_index] = regval;
+                /* Index autoincrement */
+                s->dac_index = (s->dac_index + 1) & 255;
+            default:
+                s->dac_state = 0;
+                break;
+            }
+            val <<= 8;
+        }
+        s->full_update = 1;
+        break;
+    case 0x10:
+        s->regs[0] = val;
+        break;
+    case 0x11:
+        if (s->regs[1] & 0x80) {
+            /* clear interrupt */
+            s->regs[1] &= ~0x80;
+            qemu_irq_lower(s->irq);
+        }
+        break;
+    case 0x12 ... 0x1f:
+        s->regs[addr - 0x10] = val;
+        break;
+    default:
+        break;
+    }
+}
+
+static const MemoryRegionOps cg3_reg_ops = {
+    .read = cg3_reg_read,
+    .write = cg3_reg_write,
+    .endianness = DEVICE_NATIVE_ENDIAN,
+    .valid = {
+        .min_access_size = 1,
+        .max_access_size = 4,
+    },
+};
+
+static const GraphicHwOps cg3_ops = {
+    .invalidate = cg3_invalidate_display,
+    .gfx_update = cg3_update_display,
+};
+
+static int cg3_init1(SysBusDevice *dev)
+{
+    CG3State *s = CG3(dev);
+    int ret;
+    char *fcode_filename;
+
+    /* FCode ROM */
+    memory_region_init_ram(&s->rom, NULL, "cg3.prom", FCODE_MAX_ROM_SIZE);
+    vmstate_register_ram_global(&s->rom);
+    memory_region_set_readonly(&s->rom, true);
+    sysbus_init_mmio(dev, &s->rom);
+
+    fcode_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, CG3_ROM_FILE);
+    if (fcode_filename) {
+        ret = load_image_targphys(fcode_filename, s->prom_addr,
+                                  FCODE_MAX_ROM_SIZE);
+    }
+
+    if (ret < 0 || ret > FCODE_MAX_ROM_SIZE) {
+        fprintf(stderr, "cg3: could not load prom '%s'\n", CG3_ROM_FILE);
+        exit(1);
+    }
+
+    memory_region_init_io(&s->reg, NULL, &cg3_reg_ops, s, "cg3.reg",
+                          CG3_REG_SIZE);
+    sysbus_init_mmio(dev, &s->reg);
+
+    memory_region_init_ram(&s->vram_mem, NULL, "cg3.vram", s->vram_size);
+    vmstate_register_ram_global(&s->vram_mem);
+    sysbus_init_mmio(dev, &s->vram_mem);
+
+    sysbus_init_irq(dev, &s->irq);
+
+    s->con = graphic_console_init(DEVICE(dev), &cg3_ops, s);
+    qemu_console_resize(s->con, s->width, s->height);
+
+    return 0;
+}
+
+static int vmstate_cg3_post_load(void *opaque, int version_id)
+{
+    CG3State *s = opaque;
+
+    cg3_invalidate_display(s);
+
+    return 0;
+}
+
+static const VMStateDescription vmstate_cg3 = {
+    .name = "cg3",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .post_load = vmstate_cg3_post_load,
+    .fields    = (VMStateField[]) {
+        VMSTATE_UINT16(height, CG3State),
+        VMSTATE_UINT16(width, CG3State),
+        VMSTATE_UINT16(depth, CG3State),
+        VMSTATE_BUFFER(r, CG3State),
+        VMSTATE_BUFFER(g, CG3State),
+        VMSTATE_BUFFER(b, CG3State),
+        VMSTATE_UINT8(dac_index, CG3State),
+        VMSTATE_UINT8(dac_state, CG3State),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
+static void cg3_reset(DeviceState *d)
+{
+    CG3State *s = CG3(d);
+
+    /* Initialize palette */
+    memset(s->r, 0, 256);
+    memset(s->g, 0, 256);
+    memset(s->b, 0, 256);
+
+    s->dac_state = 0;
+    s->full_update = 1;
+    qemu_irq_lower(s->irq);
+}
+
+static Property cg3_properties[] = {
+    DEFINE_PROP_HEX32("vram_size",     CG3State, vram_size, -1),
+    DEFINE_PROP_UINT16("width",        CG3State, width,     -1),
+    DEFINE_PROP_UINT16("height",       CG3State, height,    -1),
+    DEFINE_PROP_UINT16("depth",        CG3State, depth,     -1),
+    DEFINE_PROP_HEX64("prom_addr",     CG3State, prom_addr, -1),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
+static void cg3_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
+
+    k->init = cg3_init1;
+    dc->reset = cg3_reset;
+    dc->vmsd = &vmstate_cg3;
+    dc->props = cg3_properties;
+}
+
+static const TypeInfo cg3_info = {
+    .name          = TYPE_CG3,
+    .parent        = TYPE_SYS_BUS_DEVICE,
+    .instance_size = sizeof(CG3State),
+    .class_init    = cg3_class_init,
+};
+
+static void cg3_register_types(void)
+{
+    type_register_static(&cg3_info);
+}
+
+type_init(cg3_register_types)
diff --git a/pc-bios/QEMU,cgthree.bin b/pc-bios/QEMU,cgthree.bin
new file mode 100644
index 
0000000000000000000000000000000000000000..e2ecfc6f34edace2d39b411454768cd3a1366e71
GIT binary patch
literal 682
zcmZ8e&2G~`5Z+0gc-$n^UOTi&0g*FU#DYkz#DQbW0S*=7?8MvHkl2xbK)LnKYb2K*
zBUu~u=-%K3cn#iwS?2_onfbn%Z)SGq58l0EtZ`Q&lfN9MzqVOxx7k(PNme4BMoH#=
zivp3j-=iQ8k%<yv&-?!+LlMoxyv{cE{3sBsJanf~p4C*7s6`YDce>8Sfzs-#X)$;6
z^-3Tsv9&L;address@hidden&XydhCj{zzi$X=So^j0Bx~lQH(address@hidden
z5|8D03yt5<1lt1(ILS?^6wCxNc+8urn1e~YCCAY8czfxu+$e4sL~+S=1(PBtyeZM%
zlW}OrzC`<address@hidden|address@hidden&Wp
z71w9;JWPdX0M~;kTP^%G40-SR(}&M5Cu7g`-gpxjlsKg6o3{>ofdh0NU<zO0D_M){
zeh{Q0%fQ4o>X)z_UBY4nKXx?aOrnW86}1m{QZ<BH^+^dB1Ppbc`aWQ)M_holRo}+7
zD9%%*AXdAj(H)i6ZD#CL(Atr>address@hidden(FPf|A%aVEgznpzwj-d*}}apTYOA{Eqx8&}sK
p&(9|pu1Cq<Ec8>#38l*qW4qL?Gb_?8NwYAzA=bhnJgM-E{ROoYtgZk6

literal 0
HcmV?d00001

diff --git a/pc-bios/README b/pc-bios/README
index a61aa8b..62a076d 100644
--- a/pc-bios/README
+++ b/pc-bios/README
@@ -11,8 +11,8 @@
   firmware implementation. The goal is to implement a 100% IEEE
   1275-1994 (referred to as Open Firmware) compliant firmware.
   The included images for PowerPC (for 32 and 64 bit PPC CPUs),
-  Sparc32 (including QEMU,tcx.bin) and Sparc64 are built from OpenBIOS SVN
-  revision 1229.
+  Sparc32 (including QEMU,tcx.bin and QEMU,cgthree.bin) and Sparc64 are built
+  from OpenBIOS SVN revision 1229.
 
 - SLOF (Slimline Open Firmware) is a free IEEE 1275 Open Firmware
   implementation for certain IBM POWER hardware.  The sources are at
-- 
1.7.10.4




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