hw/ppc440.c

   1 /*
   2  * Qemu PowerPC 440 chip emulation
   3  *
   4  * Copyright 2007 IBM Corporation.
   5  * Authors:
   6  *      Jerone Young <jyoung5@us.ibm.com>
   7  *      Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
   8  *      Hollis Blanchard <hollisb@us.ibm.com>
   9  *
  10  * This work is licensed under the GNU GPL license version 2 or later.
  11  *
  12  */
  13
  14 #include "hw.h"
  15 #include "isa.h"
  16 #include "ppc.h"
  17 #include "ppc4xx.h"
  18 #include "ppc440.h"
  19 #include "ppc405.h"
  20 #include "sysemu.h"
  21 #include "kvm.h"
  22
  23 #define PPC440EP_PCI_CONFIG     0xeec00000
  24 #define PPC440EP_PCI_INTACK     0xeed00000
  25 #define PPC440EP_PCI_SPECIAL    0xeed00000
  26 #define PPC440EP_PCI_REGS       0xef400000
  27 #define PPC440EP_PCI_IO         0xe8000000
  28 #define PPC440EP_PCI_IOLEN      0x00010000
  29
  30 #define PPC440EP_SDRAM_NR_BANKS 4
  31
  32 static const unsigned int ppc440ep_sdram_bank_sizes[] = {
  33     256<<20, 128<<20, 64<<20, 32<<20, 16<<20, 8<<20, 0
  34 };
  35
  36 CPUState *ppc440ep_init(ram_addr_t *ram_size, PCIBus **pcip,
  37                         const unsigned int pci_irq_nrs[4], int do_init)
  38 {
  39     target_phys_addr_t ram_bases[PPC440EP_SDRAM_NR_BANKS];
  40     target_phys_addr_t ram_sizes[PPC440EP_SDRAM_NR_BANKS];
  41     CPUState *env;
  42     ppc4xx_mmio_t *mmio;
  43     qemu_irq *pic;
  44     qemu_irq *irqs;
  45     qemu_irq *pci_irqs;
  46
  47     env = cpu_ppc_init("440EP");
  48     if (!env && kvm_enabled()) {
  49         /* XXX Since qemu doesn't yet emulate 440, we just say it's a 405.
  50          * Since KVM doesn't use qemu's CPU emulation it seems to be working
  51          * OK. */
  52         env = cpu_ppc_init("405");
  53     }
  54     if (!env) {
  55         fprintf(stderr, "Unable to initialize CPU!\n");
  56         exit(1);
  57     }
  58
  59     ppc_dcr_init(env, NULL, NULL);
  60
  61     /* interrupt controller */
  62     irqs = qemu_mallocz(sizeof(qemu_irq) * PPCUIC_OUTPUT_NB);
  63     irqs[PPCUIC_OUTPUT_INT] = ((qemu_irq *)env->irq_inputs)[PPC40x_INPUT_INT];
  64     irqs[PPCUIC_OUTPUT_CINT] = ((qemu_irq *)env->irq_inputs)[PPC40x_INPUT_CINT];
  65     pic = ppcuic_init(env, irqs, 0x0C0, 0, 1);
  66
  67     /* SDRAM controller */
  68     memset(ram_bases, 0, sizeof(ram_bases));
  69     memset(ram_sizes, 0, sizeof(ram_sizes));
  70     *ram_size = ppc4xx_sdram_adjust(*ram_size, PPC440EP_SDRAM_NR_BANKS,
  71                                     ram_bases, ram_sizes,
  72                                     ppc440ep_sdram_bank_sizes);
  73     /* XXX 440EP's ECC interrupts are on UIC1, but we've only created UIC0. */
  74     ppc4xx_sdram_init(env, pic[14], PPC440EP_SDRAM_NR_BANKS, ram_bases,
  75                       ram_sizes, do_init);
  76
  77     /* PCI */
  78     pci_irqs = qemu_malloc(sizeof(qemu_irq) * 4);
  79     pci_irqs[0] = pic[pci_irq_nrs[0]];
  80     pci_irqs[1] = pic[pci_irq_nrs[1]];
  81     pci_irqs[2] = pic[pci_irq_nrs[2]];
  82     pci_irqs[3] = pic[pci_irq_nrs[3]];
  83     *pcip = ppc4xx_pci_init(env, pci_irqs,
  84                             PPC440EP_PCI_CONFIG,
  85                             PPC440EP_PCI_INTACK,
  86                             PPC440EP_PCI_SPECIAL,
  87                             PPC440EP_PCI_REGS);
  88     if (!*pcip)
  89         printf("couldn't create PCI controller!\n");
  90
  91     isa_mmio_init(PPC440EP_PCI_IO, PPC440EP_PCI_IOLEN);
  92
  93     /* MMIO -- most "miscellaneous" devices live above 0xef600000. */
  94     mmio = ppc4xx_mmio_init(env, 0xef600000);
  95
  96     if (serial_hds[0])
  97         ppc405_serial_init(env, mmio, 0x300, pic[0], serial_hds[0]);
  98
  99     if (serial_hds[1])
 100         ppc405_serial_init(env, mmio, 0x400, pic[1], serial_hds[1]);
 101
 102     return env;
 103 }