hw/hppa: Implement DINO system board

Now that we have the prerequisites in target/hppa/,
implement the hardware for a PA7100LC.

This also enables build for hppa-softmmu.

Signed-off-by: Helge Deller <deller@gmx.de>
[rth: Since it is all new code, squashed all branch development
withing hw/hppa/ to a single patch.]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

1 files changed, 246 insertions, 1 deletions

diff --git a/hw/hppa/machine.c b/hw/hppa/machine.c
index 79958da18f..afd3867313 100644
--- a/hw/hppa/machine.c
+++ b/hw/hppa/machine.c
@@ -16,20 +16,265 @@
 #include "hw/ide.h"
 #include "hw/timer/i8254.h"
 #include "hw/char/serial.h"
+#include "hw/hppa/hppa_sys.h"
 #include "qemu/cutils.h"
 #include "qapi/error.h"
 
+#define MAX_IDE_BUS 2
+
+static ISABus *hppa_isa_bus(void)
+{
+    ISABus *isa_bus;
+    qemu_irq *isa_irqs;
+    MemoryRegion *isa_region;
+
+    isa_region = g_new(MemoryRegion, 1);
+    memory_region_init_io(isa_region, NULL, &hppa_pci_ignore_ops,
+                          NULL, "isa-io", 0x800);
+    memory_region_add_subregion(get_system_memory(), IDE_HPA,
+                                isa_region);
+
+    isa_bus = isa_bus_new(NULL, get_system_memory(), isa_region,
+                          &error_abort);
+    isa_irqs = i8259_init(isa_bus,
+                          /* qemu_allocate_irq(dino_set_isa_irq, s, 0)); */
+                          NULL);
+    isa_bus_irqs(isa_bus, isa_irqs);
+
+    return isa_bus;
+}
+
+static uint64_t cpu_hppa_to_phys(void *opaque, uint64_t addr)
+{
+    addr &= (0x10000000 - 1);
+    return addr;
+}
+
+static HPPACPU *cpu[HPPA_MAX_CPUS];
+static uint64_t firmware_entry;
 
 static void machine_hppa_init(MachineState *machine)
 {
+    const char *kernel_filename = machine->kernel_filename;
+    const char *kernel_cmdline = machine->kernel_cmdline;
+    const char *initrd_filename = machine->initrd_filename;
+    PCIBus *pci_bus;
+    ISABus *isa_bus;
+    qemu_irq rtc_irq, serial_irq;
+    char *firmware_filename;
+    uint64_t firmware_low, firmware_high;
+    long size;
+    uint64_t kernel_entry = 0, kernel_low, kernel_high;
+    MemoryRegion *addr_space = get_system_memory();
+    MemoryRegion *rom_region;
+    MemoryRegion *ram_region;
+    MemoryRegion *cpu_region;
+    long i;
+
+    ram_size = machine->ram_size;
+
+    /* Create CPUs.  */
+    for (i = 0; i < smp_cpus; i++) {
+        cpu[i] = HPPA_CPU(cpu_create(machine->cpu_type));
+
+        cpu_region = g_new(MemoryRegion, 1);
+        memory_region_init_io(cpu_region, OBJECT(cpu[i]), &hppa_io_eir_ops,
+                              cpu[i], g_strdup_printf("cpu%ld-io-eir", i), 4);
+        memory_region_add_subregion(addr_space, CPU_HPA + i * 0x1000,
+                                    cpu_region);
+    }
+
+    /* Limit main memory. */
+    if (ram_size > FIRMWARE_START) {
+        machine->ram_size = ram_size = FIRMWARE_START;
+    }
+
+    /* Main memory region. */
+    ram_region = g_new(MemoryRegion, 1);
+    memory_region_allocate_system_memory(ram_region, OBJECT(machine),
+                                         "ram", ram_size);
+    memory_region_add_subregion(addr_space, 0, ram_region);
+
+    /* Init Dino (PCI host bus chip).  */
+    pci_bus = dino_init(addr_space, &rtc_irq, &serial_irq);
+    assert(pci_bus);
+
+    /* Create ISA bus. */
+    isa_bus = hppa_isa_bus();
+    assert(isa_bus);
+
+    /* Realtime clock, used by firmware for PDC_TOD call. */
+    mc146818_rtc_init(isa_bus, 2000, rtc_irq);
+
+    /* Serial code setup.  */
+    if (serial_hds[0]) {
+        uint32_t addr = DINO_UART_HPA + 0x800;
+        serial_mm_init(addr_space, addr, 0, serial_irq,
+                       115200, serial_hds[0], DEVICE_BIG_ENDIAN);
+        fprintf(stderr, "Serial port created at 0x%x\n", addr);
+    }
+
+    /* SCSI disk setup. */
+    lsi53c895a_create(pci_bus);
+
+    /* Network setup.  e1000 is good enough, failing Tulip support.  */
+    for (i = 0; i < nb_nics; i++) {
+        pci_nic_init_nofail(&nd_table[i], pci_bus, "e1000", NULL);
+    }
+
+    /* Load firmware.  Given that this is not "real" firmware,
+       but one explicitly written for the emulation, we might as
+       well load it directly from an ELF image.  */
+    firmware_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS,
+                                       bios_name ? bios_name :
+                                       "hppa-firmware.img");
+    if (firmware_filename == NULL) {
+        error_report("no firmware provided");
+        exit(1);
+    }
+
+    size = load_elf(firmware_filename, NULL,
+                    NULL, &firmware_entry, &firmware_low, &firmware_high,
+                    true, EM_PARISC, 0, 0);
+
+    /* Unfortunately, load_elf sign-extends reading elf32.  */
+    firmware_entry = (target_ureg)firmware_entry;
+    firmware_low = (target_ureg)firmware_low;
+    firmware_high = (target_ureg)firmware_high;
+
+    if (size < 0) {
+        error_report("could not load firmware '%s'", firmware_filename);
+        exit(1);
+    }
+    fprintf(stderr, "Firmware loaded at 0x%08" PRIx64 "-0x%08" PRIx64
+            ", entry at 0x%08" PRIx64 ".\n",
+            firmware_low, firmware_high, firmware_entry);
+    if (firmware_low < ram_size || firmware_high >= FIRMWARE_END) {
+        error_report("Firmware overlaps with memory or IO space");
+        exit(1);
+    }
+    g_free(firmware_filename);
+
+    rom_region = g_new(MemoryRegion, 1);
+    memory_region_allocate_system_memory(rom_region, OBJECT(machine),
+                                         "firmware",
+                                         (FIRMWARE_END - FIRMWARE_START));
+    memory_region_add_subregion(addr_space, FIRMWARE_START, rom_region);
+
+    /* Load kernel */
+    if (kernel_filename) {
+        fprintf(stderr, "LOADING kernel '%s'\n", kernel_filename);
+        size = load_elf(kernel_filename, &cpu_hppa_to_phys,
+                        NULL, &kernel_entry, &kernel_low, &kernel_high,
+                        true, EM_PARISC, 0, 0);
+
+        /* Unfortunately, load_elf sign-extends reading elf32.  */
+        kernel_entry = (target_ureg) cpu_hppa_to_phys(NULL, kernel_entry);
+        kernel_low = (target_ureg)kernel_low;
+        kernel_high = (target_ureg)kernel_high;
+
+        if (size < 0) {
+            error_report("could not load kernel '%s'", kernel_filename);
+            exit(1);
+        }
+
+        fprintf(stderr, "Kernel loaded at 0x%08" PRIx64 "-0x%08" PRIx64
+                ", entry at 0x%08" PRIx64 ", size %ld kB.\n",
+                kernel_low, kernel_high, kernel_entry, size / 1024);
+
+        if (kernel_cmdline) {
+            cpu[0]->env.gr[24] = 0x4000;
+            pstrcpy_targphys("cmdline", cpu[0]->env.gr[24],
+                             TARGET_PAGE_SIZE, kernel_cmdline);
+        }
+
+        if (initrd_filename) {
+            ram_addr_t initrd_base;
+            long initrd_size;
+
+            initrd_size = get_image_size(initrd_filename);
+            if (initrd_size < 0) {
+                error_report("could not load initial ram disk '%s'",
+                             initrd_filename);
+                exit(1);
+            }
+
+            /* Load the initrd image high in memory.
+               Mirror the algorithm used by palo:
+               (1) Due to sign-extension problems and PDC,
+               put the initrd no higher than 1G.
+               (2) Reserve 64k for stack.  */
+            initrd_base = MIN(ram_size, 1024 * 1024 * 1024);
+            initrd_base = initrd_base - 64 * 1024;
+            initrd_base = (initrd_base - initrd_size) & TARGET_PAGE_MASK;
+
+            if (initrd_base < kernel_high) {
+                error_report("kernel and initial ram disk too large!");
+                exit(1);
+            }
+
+            load_image_targphys(initrd_filename, initrd_base, initrd_size);
+            cpu[0]->env.gr[23] = initrd_base;
+            cpu[0]->env.gr[22] = initrd_base + initrd_size;
+        }
+    }
+
+    if (!kernel_entry) {
+        /* When booting via firmware, tell firmware if we want interactive
+         * mode (kernel_entry=1), and to boot from CD (gr[24]='d')
+         * or hard disc * (gr[24]='c').
+         */
+        kernel_entry = boot_menu ? 1 : 0;
+        cpu[0]->env.gr[24] = machine->boot_order[0];
+    }
+
+    /* We jump to the firmware entry routine and pass the
+     * various parameters in registers. After firmware initialization,
+     * firmware will start the Linux kernel with ramdisk and cmdline.
+     */
+    cpu[0]->env.gr[26] = ram_size;
+    cpu[0]->env.gr[25] = kernel_entry;
+
+    /* tell firmware how many SMP CPUs to present in inventory table */
+    cpu[0]->env.gr[21] = smp_cpus;
 }
 
+static void hppa_machine_reset(void)
+{
+    int i;
+
+    qemu_devices_reset();
+
+    /* Start all CPUs at the firmware entry point.
+     *  Monarch CPU will initialize firmware, secondary CPUs
+     *  will enter a small idle look and wait for rendevouz. */
+    for (i = 0; i < smp_cpus; i++) {
+        cpu_set_pc(CPU(cpu[i]), firmware_entry);
+        cpu[i]->env.gr[5] = CPU_HPA + i * 0x1000;
+    }
+
+    /* already initialized by machine_hppa_init()? */
+    if (cpu[0]->env.gr[26] == ram_size) {
+        return;
+    }
+
+    cpu[0]->env.gr[26] = ram_size;
+    cpu[0]->env.gr[25] = 0; /* no firmware boot menu */
+    cpu[0]->env.gr[24] = 'c';
+    /* gr22/gr23 unused, no initrd while reboot. */
+    cpu[0]->env.gr[21] = smp_cpus;
+}
+
+
 static void machine_hppa_machine_init(MachineClass *mc)
 {
     mc->desc = "HPPA generic machine";
+    mc->default_cpu_type = TYPE_HPPA_CPU;
     mc->init = machine_hppa_init;
+    mc->reset = hppa_machine_reset;
     mc->block_default_type = IF_SCSI;
-    mc->max_cpus = 1;
+    mc->max_cpus = HPPA_MAX_CPUS;
+    mc->default_cpus = 1;
     mc->is_default = 1;
     mc->default_ram_size = 512 * M_BYTE;
     mc->default_boot_order = "cd";