hw/versatilepb.c

   1 /*
   2  * ARM Versatile Platform/Application Baseboard System emulation.
   3  *
   4  * Copyright (c) 2005-2006 CodeSourcery.
   5  * Written by Paul Brook
   6  *
   7  * This code is licenced under the GPL.
   8  */
   9
  10 #include "vl.h"
  11 #include "arm_pic.h"
  12
  13 /* Primary interrupt controller.  */
  14
  15 typedef struct vpb_sic_state
  16 {
  17   arm_pic_handler handler;
  18   uint32_t base;
  19   uint32_t level;
  20   uint32_t mask;
  21   uint32_t pic_enable;
  22   void *parent;
  23   int irq;
  24 } vpb_sic_state;
  25
  26 static void vpb_sic_update(vpb_sic_state *s)
  27 {
  28     uint32_t flags;
  29
  30     flags = s->level & s->mask;
  31     pic_set_irq_new(s->parent, s->irq, flags != 0);
  32 }
  33
  34 static void vpb_sic_update_pic(vpb_sic_state *s)
  35 {
  36     int i;
  37     uint32_t mask;
  38
  39     for (i = 21; i <= 30; i++) {
  40         mask = 1u << i;
  41         if (!(s->pic_enable & mask))
  42             continue;
  43         pic_set_irq_new(s->parent, i, (s->level & mask) != 0);
  44     }
  45 }
  46
  47 static void vpb_sic_set_irq(void *opaque, int irq, int level)
  48 {
  49     vpb_sic_state *s = (vpb_sic_state *)opaque;
  50     if (level)
  51         s->level |= 1u << irq;
  52     else
  53         s->level &= ~(1u << irq);
  54     if (s->pic_enable & (1u << irq))
  55         pic_set_irq_new(s->parent, irq, level);
  56     vpb_sic_update(s);
  57 }
  58
  59 static uint32_t vpb_sic_read(void *opaque, target_phys_addr_t offset)
  60 {
  61     vpb_sic_state *s = (vpb_sic_state *)opaque;
  62
  63     offset -= s->base;
  64     switch (offset >> 2) {
  65     case 0: /* STATUS */
  66         return s->level & s->mask;
  67     case 1: /* RAWSTAT */
  68         return s->level;
  69     case 2: /* ENABLE */
  70         return s->mask;
  71     case 4: /* SOFTINT */
  72         return s->level & 1;
  73     case 8: /* PICENABLE */
  74         return s->pic_enable;
  75     default:
  76         printf ("vpb_sic_read: Bad register offset 0x%x\n", offset);
  77         return 0;
  78     }
  79 }
  80
  81 static void vpb_sic_write(void *opaque, target_phys_addr_t offset,
  82                           uint32_t value)
  83 {
  84     vpb_sic_state *s = (vpb_sic_state *)opaque;
  85     offset -= s->base;
  86
  87     switch (offset >> 2) {
  88     case 2: /* ENSET */
  89         s->mask |= value;
  90         break;
  91     case 3: /* ENCLR */
  92         s->mask &= ~value;
  93         break;
  94     case 4: /* SOFTINTSET */
  95         if (value)
  96             s->mask |= 1;
  97         break;
  98     case 5: /* SOFTINTCLR */
  99         if (value)
 100             s->mask &= ~1u;
 101         break;
 102     case 8: /* PICENSET */
 103         s->pic_enable |= (value & 0x7fe00000);
 104         vpb_sic_update_pic(s);
 105         break;
 106     case 9: /* PICENCLR */
 107         s->pic_enable &= ~value;
 108         vpb_sic_update_pic(s);
 109         break;
 110     default:
 111         printf ("vpb_sic_write: Bad register offset 0x%x\n", offset);
 112         return;
 113     }
 114     vpb_sic_update(s);
 115 }
 116
 117 static CPUReadMemoryFunc *vpb_sic_readfn[] = {
 118    vpb_sic_read,
 119    vpb_sic_read,
 120    vpb_sic_read
 121 };
 122
 123 static CPUWriteMemoryFunc *vpb_sic_writefn[] = {
 124    vpb_sic_write,
 125    vpb_sic_write,
 126    vpb_sic_write
 127 };
 128
 129 static vpb_sic_state *vpb_sic_init(uint32_t base, void *parent, int irq)
 130 {
 131     vpb_sic_state *s;
 132     int iomemtype;
 133
 134     s = (vpb_sic_state *)qemu_mallocz(sizeof(vpb_sic_state));
 135     if (!s)
 136         return NULL;
 137     s->handler = vpb_sic_set_irq;
 138     s->base = base;
 139     s->parent = parent;
 140     s->irq = irq;
 141     iomemtype = cpu_register_io_memory(0, vpb_sic_readfn,
 142                                        vpb_sic_writefn, s);
 143     cpu_register_physical_memory(base, 0x00000fff, iomemtype);
 144     /* ??? Save/restore.  */
 145     return s;
 146 }
 147
 148 /* Board init.  */
 149
 150 /* The AB and PB boards both use the same core, just with different
 151    peripherans and expansion busses.  For now we emulate a subset of the
 152    PB peripherals and just change the board ID.  */
 153
 154 static void versatile_init(int ram_size, int vga_ram_size, int boot_device,
 155                      DisplayState *ds, const char **fd_filename, int snapshot,
 156                      const char *kernel_filename, const char *kernel_cmdline,
 157                      const char *initrd_filename, int board_id)
 158 {
 159     CPUState *env;
 160     void *pic;
 161     void *sic;
 162
 163     env = cpu_init();
 164     cpu_arm_set_model(env, ARM_CPUID_ARM926);
 165     /* ??? RAM shoud repeat to fill physical memory space.  */
 166     /* SDRAM at address zero.  */
 167     cpu_register_physical_memory(0, ram_size, IO_MEM_RAM);
 168
 169     pic = arm_pic_init_cpu(env);
 170     pic = pl190_init(0x10140000, pic, ARM_PIC_CPU_IRQ, ARM_PIC_CPU_FIQ);
 171     sic = vpb_sic_init(0x10003000, pic, 31);
 172     pl050_init(0x10006000, sic, 3, 0);
 173     pl050_init(0x10007000, sic, 4, 1);
 174
 175     /* TODO: Init PCI NICs.  */
 176     if (nd_table[0].vlan) {
 177         if (nd_table[0].model == NULL
 178             || strcmp(nd_table[0].model, "smc91c111") == 0) {
 179             smc91c111_init(&nd_table[0], 0x10010000, sic, 25);
 180         } else {
 181             fprintf(stderr, "qemu: Unsupported NIC: %s\n", nd_table[0].model);
 182             exit (1);
 183         }
 184     }
 185
 186     pl011_init(0x101f1000, pic, 12, serial_hds[0]);
 187     pl011_init(0x101f2000, pic, 13, serial_hds[1]);
 188     pl011_init(0x101f3000, pic, 14, serial_hds[2]);
 189     pl011_init(0x10009000, sic, 6, serial_hds[3]);
 190
 191     pl080_init(0x10130000, pic, 17);
 192     sp804_init(0x101e2000, pic, 4);
 193     sp804_init(0x101e3000, pic, 5);
 194
 195     /* The versatile/PB actually has a modified Color LCD controller
 196        that includes hardware cursor support from the PL111.  */
 197     pl110_init(ds, 0x10120000, pic, 16, 1);
 198
 199     /* Memory map for Versatile/PB:  */
 200     /* 0x10000000 System registers.  */
 201     /* 0x10001000 PCI controller config registers.  */
 202     /* 0x10002000 Serial bus interface.  */
 203     /*  0x10003000 Secondary interrupt controller.  */
 204     /* 0x10004000 AACI (audio).  */
 205     /* 0x10005000 MMCI0.  */
 206     /*  0x10006000 KMI0 (keyboard).  */
 207     /*  0x10007000 KMI1 (mouse).  */
 208     /* 0x10008000 Character LCD Interface.  */
 209     /*  0x10009000 UART3.  */
 210     /* 0x1000a000 Smart card 1.  */
 211     /* 0x1000b000 MMCI1.  */
 212     /*  0x10010000 Ethernet.  */
 213     /* 0x10020000 USB.  */
 214     /* 0x10100000 SSMC.  */
 215     /* 0x10110000 MPMC.  */
 216     /*  0x10120000 CLCD Controller.  */
 217     /*  0x10130000 DMA Controller.  */
 218     /*  0x10140000 Vectored interrupt controller.  */
 219     /* 0x101d0000 AHB Monitor Interface.  */
 220     /* 0x101e0000 System Controller.  */
 221     /* 0x101e1000 Watchdog Interface.  */
 222     /* 0x101e2000 Timer 0/1.  */
 223     /* 0x101e3000 Timer 2/3.  */
 224     /* 0x101e4000 GPIO port 0.  */
 225     /* 0x101e5000 GPIO port 1.  */
 226     /* 0x101e6000 GPIO port 2.  */
 227     /* 0x101e7000 GPIO port 3.  */
 228     /* 0x101e8000 RTC.  */
 229     /* 0x101f0000 Smart card 0.  */
 230     /*  0x101f1000 UART0.  */
 231     /*  0x101f2000 UART1.  */
 232     /*  0x101f3000 UART2.  */
 233     /* 0x101f4000 SSPI.  */
 234
 235     arm_load_kernel(ram_size, kernel_filename, kernel_cmdline,
 236                     initrd_filename, board_id);
 237 }
 238
 239 static void vpb_init(int ram_size, int vga_ram_size, int boot_device,
 240                      DisplayState *ds, const char **fd_filename, int snapshot,
 241                      const char *kernel_filename, const char *kernel_cmdline,
 242                      const char *initrd_filename)
 243 {
 244     versatile_init(ram_size, vga_ram_size, boot_device,
 245                    ds, fd_filename, snapshot,
 246                    kernel_filename, kernel_cmdline,
 247                    initrd_filename, 0x183);
 248 }
 249
 250 static void vab_init(int ram_size, int vga_ram_size, int boot_device,
 251                      DisplayState *ds, const char **fd_filename, int snapshot,
 252                      const char *kernel_filename, const char *kernel_cmdline,
 253                      const char *initrd_filename)
 254 {
 255     versatile_init(ram_size, vga_ram_size, boot_device,
 256                    ds, fd_filename, snapshot,
 257                    kernel_filename, kernel_cmdline,
 258                    initrd_filename, 0x25e);
 259 }
 260
 261 QEMUMachine versatilepb_machine = {
 262     "versatilepb",
 263     "ARM Versatile/PB (ARM926EJ-S)",
 264     vpb_init,
 265 };
 266
 267 QEMUMachine versatileab_machine = {
 268     "versatileab",
 269     "ARM Versatile/AB (ARM926EJ-S)",
 270     vab_init,
 271 };