Malta CBUS UART support.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2557 c046a42c-6fe2-441c-8c8c-71466251a162

3 files changed, 51 insertions, 16 deletions

diff --git a/hw/mips_int.c b/hw/mips_int.c
index b384b64d28..ed489f1a16 100644
--- a/hw/mips_int.c
+++ b/hw/mips_int.c
@@ -27,7 +27,7 @@ void cpu_mips_irq_request(void *opaque, int irq, int level)
     if (level) {
         env->CP0_Cause |= 1 << (irq + CP0Ca_IP);
     } else {
-        env->CP0_Cause &= ~(1 << (irq +CP0Ca_IP));
+        env->CP0_Cause &= ~(1 << (irq + CP0Ca_IP));
     }
     cpu_mips_update_irq(env);
 }
diff --git a/hw/mips_malta.c b/hw/mips_malta.c
index 54b813bdfe..43592df522 100644
--- a/hw/mips_malta.c
+++ b/hw/mips_malta.c
@@ -55,6 +55,7 @@ typedef struct {
     uint32_t i2csel;
     CharDriverState *display;
     char display_text[9];
+    SerialState *uart;
 } MaltaFPGAState;
 
 static PITState *pit;
@@ -241,6 +242,18 @@ static uint32_t malta_fpga_readl(void *opaque, target_phys_addr_t addr)
         val = s->brk;
         break;
 
+    /* UART Registers */
+    case 0x00900:
+    case 0x00904:
+    case 0x00908:
+    case 0x0090c:
+    case 0x00910:
+    case 0x00914:
+    case 0x00918:
+    case 0x0091c:
+        val = serial_mm_readl(s->uart, addr);
+        break;
+
     /* GPOUT Register */
     case 0x00a00:
         val = s->gpout;
@@ -341,6 +354,18 @@ static void malta_fpga_writel(void *opaque, target_phys_addr_t addr,
         s->brk = val & 0xff;
         break;
 
+    /* UART Registers */
+    case 0x00900:
+    case 0x00904:
+    case 0x00908:
+    case 0x0090c:
+    case 0x00910:
+    case 0x00914:
+    case 0x00918:
+    case 0x0091c:
+        serial_mm_writel(s->uart, addr, val);
+        break;
+
     /* GPOUT Register */
     case 0x00a00:
         s->gpout = val & 0xff;
@@ -400,15 +425,17 @@ void malta_fpga_reset(void *opaque)
     malta_fpga_update_display(s);
 }
 
-MaltaFPGAState *malta_fpga_init(target_phys_addr_t base)
+MaltaFPGAState *malta_fpga_init(target_phys_addr_t base, CPUState *env)
 {
     MaltaFPGAState *s;
+    CharDriverState *uart_chr;
     int malta;
 
     s = (MaltaFPGAState *)qemu_mallocz(sizeof(MaltaFPGAState));
 
     malta = cpu_register_io_memory(0, malta_fpga_read,
                                    malta_fpga_write, s);
+
     cpu_register_physical_memory(base, 0x100000, malta);
 
     s->display = qemu_chr_open("vc");
@@ -422,6 +449,11 @@ MaltaFPGAState *malta_fpga_init(target_phys_addr_t base)
     qemu_chr_printf(s->display, "+        +\r\n");
     qemu_chr_printf(s->display, "+--------+\r\n");
 
+    uart_chr = qemu_chr_open("vc");
+    qemu_chr_printf(uart_chr, "CBUS UART\r\n");
+    s->uart = serial_mm_init(&cpu_mips_irq_request, env, base, 3, 2,
+                             uart_chr, 0);
+
     malta_fpga_reset(s);
     qemu_register_reset(malta_fpga_reset, s);
 
@@ -683,7 +715,7 @@ void mips_malta_init (int ram_size, int vga_ram_size, int boot_device,
     cpu_mips_irqctrl_init();
 
     /* FPGA */
-    malta_fpga = malta_fpga_init(0x1f000000LL);
+    malta_fpga = malta_fpga_init(0x1f000000LL, env);
 
     /* Interrupt controller */
     isa_pic = pic_init(pic_irq_request, env);
diff --git a/hw/serial.c b/hw/serial.c
index a88aec17d1..ed2a857008 100644
--- a/hw/serial.c
+++ b/hw/serial.c
@@ -371,45 +371,45 @@ SerialState *serial_init(SetIRQFunc *set_irq, void *opaque,
 }
 
 /* Memory mapped interface */
-static uint32_t serial_mm_readb (void *opaque, target_phys_addr_t addr)
+uint32_t serial_mm_readb (void *opaque, target_phys_addr_t addr)
 {
     SerialState *s = opaque;
 
     return serial_ioport_read(s, (addr - s->base) >> s->it_shift) & 0xFF;
 }
 
-static void serial_mm_writeb (void *opaque,
-                              target_phys_addr_t addr, uint32_t value)
+void serial_mm_writeb (void *opaque,
+                       target_phys_addr_t addr, uint32_t value)
 {
     SerialState *s = opaque;
 
     serial_ioport_write(s, (addr - s->base) >> s->it_shift, value & 0xFF);
 }
 
-static uint32_t serial_mm_readw (void *opaque, target_phys_addr_t addr)
+uint32_t serial_mm_readw (void *opaque, target_phys_addr_t addr)
 {
     SerialState *s = opaque;
 
     return serial_ioport_read(s, (addr - s->base) >> s->it_shift) & 0xFFFF;
 }
 
-static void serial_mm_writew (void *opaque,
-                              target_phys_addr_t addr, uint32_t value)
+void serial_mm_writew (void *opaque,
+                       target_phys_addr_t addr, uint32_t value)
 {
     SerialState *s = opaque;
 
     serial_ioport_write(s, (addr - s->base) >> s->it_shift, value & 0xFFFF);
 }
 
-static uint32_t serial_mm_readl (void *opaque, target_phys_addr_t addr)
+uint32_t serial_mm_readl (void *opaque, target_phys_addr_t addr)
 {
     SerialState *s = opaque;
 
     return serial_ioport_read(s, (addr - s->base) >> s->it_shift);
 }
 
-static void serial_mm_writel (void *opaque,
-                              target_phys_addr_t addr, uint32_t value)
+void serial_mm_writel (void *opaque,
+                       target_phys_addr_t addr, uint32_t value)
 {
     SerialState *s = opaque;
 
@@ -430,7 +430,8 @@ static CPUWriteMemoryFunc *serial_mm_write[] = {
 
 SerialState *serial_mm_init (SetIRQFunc *set_irq, void *opaque,
                              target_ulong base, int it_shift,
-                             int irq, CharDriverState *chr)
+                             int irq, CharDriverState *chr,
+                             int ioregister)
 {
     SerialState *s;
     int s_io_memory;
@@ -449,9 +450,11 @@ SerialState *serial_mm_init (SetIRQFunc *set_irq, void *opaque,
 
     register_savevm("serial", base, 2, serial_save, serial_load, s);
 
-    s_io_memory = cpu_register_io_memory(0, serial_mm_read,
-                                         serial_mm_write, s);
-    cpu_register_physical_memory(base, 8 << it_shift, s_io_memory);
+    if (ioregister) {
+        s_io_memory = cpu_register_io_memory(0, serial_mm_read,
+                                             serial_mm_write, s);
+        cpu_register_physical_memory(base, 8 << it_shift, s_io_memory);
+    }
     s->chr = chr;
     qemu_chr_add_handlers(chr, serial_can_receive1, serial_receive1,
                           serial_event, s);