SM501 emulation for R2D-SH4

This patch adds minimum emulation of SM501 multifunction device,
whose main feature is 2D graphics.  It is one of the peripheral
of R2D, the SH4 evaluation board.  We can see TUX printed on the
QEMU console.

Signed-off-by: Shin-ichiro KAWASAKI <kawasaki@juno.dti.ne.jp>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5632 c046a42c-6fe2-441c-8c8c-71466251a162

Makefile.target

@@ -731,7 +731,7 @@ CPPFLAGS += -DHAS_AUDIO
 endif
 ifeq ($(TARGET_BASE_ARCH), sh4)
 OBJS+= shix.o r2d.o sh7750.o sh7750_regnames.o tc58128.o
-OBJS+= sh_timer.o ptimer.o sh_serial.o sh_intc.o
+OBJS+= sh_timer.o ptimer.o sh_serial.o sh_intc.o sm501.o serial.o
 endif
 ifeq ($(TARGET_BASE_ARCH), m68k)
 OBJS+= an5206.o mcf5206.o ptimer.o mcf_uart.o mcf_intc.o mcf5208.o mcf_fec.o

hw/devices.h

@@ -73,4 +73,7 @@ void tc6393xb_gpio_out_set(struct tc6393xb_s *s, int line,
 qemu_irq *tc6393xb_gpio_in_get(struct tc6393xb_s *s);
 qemu_irq tc6393xb_l3v_get(struct tc6393xb_s *s);
 
+/* sm501.c */
+void sm501_init(DisplayState *ds, uint32_t base, unsigned long local_mem_base,
+		uint32_t local_mem_bytes, CharDriverState *chr);
 #endif

hw/r2d.c

@@ -25,12 +25,15 @@
 
 #include "hw.h"
 #include "sh.h"
+#include "devices.h"
 #include "sysemu.h"
 #include "boards.h"
 
 #define SDRAM_BASE 0x0c000000 /* Physical location of SDRAM: Area 3 */
 #define SDRAM_SIZE 0x04000000
 
+#define SM501_VRAM_SIZE 0x800000
+
 #define PA_POWOFF	0x30
 #define PA_VERREG	0x32
 #define PA_OUTPORT	0x36
@@ -133,6 +136,7 @@ static void r2d_init(ram_addr_t ram_size, int vga_ram_size,
 {
     CPUState *env;
     struct SH7750State *s;
+    ram_addr_t sdram_addr, sm501_vga_ram_addr;
 
     if (!cpu_model)
         cpu_model = "SH7751R";
@@ -144,10 +148,14 @@ static void r2d_init(ram_addr_t ram_size, int vga_ram_size,
     }
 
     /* Allocate memory space */
-    cpu_register_physical_memory(SDRAM_BASE, SDRAM_SIZE, 0);
+    sdram_addr = qemu_ram_alloc(SDRAM_SIZE);
+    cpu_register_physical_memory(SDRAM_BASE, SDRAM_SIZE, sdram_addr);
     /* Register peripherals */
     r2d_fpga_init(0x04000000);
     s = sh7750_init(env);
+    sm501_vga_ram_addr = qemu_ram_alloc(SM501_VRAM_SIZE);
+    sm501_init(ds, 0x10000000, sm501_vga_ram_addr, SM501_VRAM_SIZE,
+	       serial_hds[2]);
     /* Todo: register on board registers */
     {
       int kernel_size;
@@ -167,5 +175,5 @@ QEMUMachine r2d_machine = {
     .name = "r2d",
     .desc = "r2d-plus board",
     .init = r2d_init,
-    .ram_require = SDRAM_SIZE | RAMSIZE_FIXED,
+    .ram_require = (SDRAM_SIZE + SM501_VRAM_SIZE) | RAMSIZE_FIXED,
 };

hw/sm501_template.h

@@ -0,0 +1,104 @@
+/*
+ * Pixel drawing function templates for QEMU SM501 Device
+ *
+ * Copyright (c) 2008 Shin-ichiro KAWASAKI
+ *
+ * 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.
+ */
+
+#if DEPTH == 8
+#define BPP 1
+#define PIXEL_TYPE uint8_t
+#elif DEPTH == 15 || DEPTH == 16
+#define BPP 2
+#define PIXEL_TYPE uint16_t
+#elif DEPTH == 32
+#define BPP 4
+#define PIXEL_TYPE uint32_t
+#else
+#error unsupport depth
+#endif
+
+#ifdef BGR_FORMAT
+#define PIXEL_NAME glue(DEPTH, bgr)
+#else
+#define PIXEL_NAME DEPTH
+#endif /* BGR_FORMAT */
+
+
+static void glue(draw_line8_, PIXEL_NAME)(
+                 uint8_t *d, const uint8_t *s, int width, const uint32_t *pal)
+{
+    uint8_t v, r, g, b;
+    do {
+      	v = ldub_raw(s);
+	r = (pal[v] >> 16) & 0xff;
+	g = (pal[v] >>  8) & 0xff;
+	b = (pal[v] >>  0) & 0xff;
+	((PIXEL_TYPE *) d)[0] = glue(rgb_to_pixel, PIXEL_NAME)(r, g, b);
+	s ++;
+	d += BPP;
+    } while (-- width != 0);
+}
+
+static void glue(draw_line16_, PIXEL_NAME)(
+		 uint8_t *d, const uint8_t *s, int width, const uint32_t *pal)
+{
+    uint16_t rgb565;
+    uint8_t r, g, b;
+
+    do {
+	rgb565 = lduw_raw(s);
+	r = ((rgb565 >> 11) & 0x1f) << 3;
+	g = ((rgb565 >>  5) & 0x3f) << 2;
+	b = ((rgb565 >>  0) & 0x1f) << 3;
+	((PIXEL_TYPE *) d)[0] = glue(rgb_to_pixel, PIXEL_NAME)(r, g, b);
+	s += 2;
+	d += BPP;
+    } while (-- width != 0);
+}
+
+static void glue(draw_line32_, PIXEL_NAME)(
+		 uint8_t *d, const uint8_t *s, int width, const uint32_t *pal)
+{
+    uint8_t r, g, b;
+
+    do {
+	ldub_raw(s);
+#if defined(TARGET_WORDS_BIGENDIAN)
+        r = s[1];
+        g = s[2];
+        b = s[3];
+#else
+        b = s[0];
+        g = s[1];
+        r = s[2];
+#endif
+	((PIXEL_TYPE *) d)[0] = glue(rgb_to_pixel, PIXEL_NAME)(r, g, b);
+	s += 4;
+	d += BPP;
+    } while (-- width != 0);
+}
+
+#undef DEPTH
+#undef BPP
+#undef PIXEL_TYPE
+#undef PIXEL_NAME
+#undef BGR_FORMAT
+