Implement basic part of SA-1110/SA-1100

Basic implementation of DEC/Intel SA-1100/SA-1110 chips emulation.
Implemented:
 - IRQs
 - GPIO
 - PPC
 - RTC
 - UARTs (no IrDA/etc.)
 - OST reused from pxa25x

Everything else is TODO (esp. PM/idle/sleep!) - see the todo in the
hw/strongarm.c

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

Makefile.target

@@ -352,6 +352,7 @@ obj-arm-y += syborg.o syborg_fb.o syborg_interrupt.o syborg_keyboard.o
 obj-arm-y += syborg_serial.o syborg_timer.o syborg_pointer.o syborg_rtc.o
 obj-arm-y += syborg_virtio.o
 obj-arm-y += vexpress.o
+obj-arm-y += strongarm.o
 
 obj-sh4-y = shix.o r2d.o sh7750.o sh7750_regnames.o tc58128.o
 obj-sh4-y += sh_timer.o sh_serial.o sh_intc.o sh_pci.o sm501.o

hw/strongarm.h

@@ -0,0 +1,64 @@
+#ifndef _STRONGARM_H
+#define _STRONGARM_H
+
+#define SA_CS0          0x00000000
+#define SA_CS1          0x08000000
+#define SA_CS2          0x10000000
+#define SA_CS3          0x18000000
+#define SA_PCMCIA_CS0   0x20000000
+#define SA_PCMCIA_CS1   0x30000000
+#define SA_CS4          0x40000000
+#define SA_CS5          0x48000000
+/* system registers here */
+#define SA_SDCS0        0xc0000000
+#define SA_SDCS1        0xc8000000
+#define SA_SDCS2        0xd0000000
+#define SA_SDCS3        0xd8000000
+
+enum {
+    SA_PIC_GPIO0_EDGE = 0,
+    SA_PIC_GPIO1_EDGE,
+    SA_PIC_GPIO2_EDGE,
+    SA_PIC_GPIO3_EDGE,
+    SA_PIC_GPIO4_EDGE,
+    SA_PIC_GPIO5_EDGE,
+    SA_PIC_GPIO6_EDGE,
+    SA_PIC_GPIO7_EDGE,
+    SA_PIC_GPIO8_EDGE,
+    SA_PIC_GPIO9_EDGE,
+    SA_PIC_GPIO10_EDGE,
+    SA_PIC_GPIOX_EDGE,
+    SA_PIC_LCD,
+    SA_PIC_UDC,
+    SA_PIC_RSVD1,
+    SA_PIC_UART1,
+    SA_PIC_UART2,
+    SA_PIC_UART3,
+    SA_PIC_MCP,
+    SA_PIC_SSP,
+    SA_PIC_DMA_CH0,
+    SA_PIC_DMA_CH1,
+    SA_PIC_DMA_CH2,
+    SA_PIC_DMA_CH3,
+    SA_PIC_DMA_CH4,
+    SA_PIC_DMA_CH5,
+    SA_PIC_OSTC0,
+    SA_PIC_OSTC1,
+    SA_PIC_OSTC2,
+    SA_PIC_OSTC3,
+    SA_PIC_RTC_HZ,
+    SA_PIC_RTC_ALARM,
+};
+
+typedef struct {
+    CPUState *env;
+    DeviceState *pic;
+    DeviceState *gpio;
+    DeviceState *ppc;
+    DeviceState *ssp;
+    SSIBus *ssp_bus;
+} StrongARMState;
+
+StrongARMState *sa1110_init(unsigned int sdram_size, const char *rev);
+
+#endif

target-arm/cpu.h

@@ -363,6 +363,7 @@ enum arm_features {
     ARM_FEATURE_V7MP,    /* v7 Multiprocessing Extensions */
     ARM_FEATURE_V4T,
     ARM_FEATURE_V5,
+    ARM_FEATURE_STRONGARM,
 };
 
 static inline int arm_feature(CPUARMState *env, int feature)
@@ -393,6 +394,8 @@ void cpu_arm_set_cp_io(CPUARMState *env, int cpnum,
 #define ARM_CPUID_ARM946      0x41059461
 #define ARM_CPUID_TI915T      0x54029152
 #define ARM_CPUID_TI925T      0x54029252
+#define ARM_CPUID_SA1100      0x4401A11B
+#define ARM_CPUID_SA1110      0x6901B119
 #define ARM_CPUID_PXA250      0x69052100
 #define ARM_CPUID_PXA255      0x69052d00
 #define ARM_CPUID_PXA260      0x69052903

target-arm/helper.c

@@ -214,6 +214,11 @@ static void cpu_reset_model_id(CPUARMState *env, uint32_t id)
         env->cp15.c0_cachetype = 0xd172172;
         env->cp15.c1_sys = 0x00000078;
         break;
+    case ARM_CPUID_SA1100:
+    case ARM_CPUID_SA1110:
+        set_feature(env, ARM_FEATURE_STRONGARM);
+        env->cp15.c1_sys = 0x00000070;
+        break;
     default:
         cpu_abort(env, "Bad CPU ID: %x\n", id);
         break;
@@ -378,6 +383,8 @@ static const struct arm_cpu_t arm_cpu_names[] = {
     { ARM_CPUID_CORTEXA9, "cortex-a9"},
     { ARM_CPUID_TI925T, "ti925t" },
     { ARM_CPUID_PXA250, "pxa250" },
+    { ARM_CPUID_SA1100,    "sa1100" },
+    { ARM_CPUID_SA1110,    "sa1110" },
     { ARM_CPUID_PXA255, "pxa255" },
     { ARM_CPUID_PXA260, "pxa260" },
     { ARM_CPUID_PXA261, "pxa261" },
@@ -1553,6 +1560,8 @@ void HELPER(set_cp15)(CPUState *env, uint32_t insn, uint32_t val)
     case 9:
         if (arm_feature(env, ARM_FEATURE_OMAPCP))
             break;
+        if (arm_feature(env, ARM_FEATURE_STRONGARM))
+            break; /* Ignore ReadBuffer access */
         switch (crm) {
         case 0: /* Cache lockdown.  */
 	    switch (op1) {