From e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb Mon Sep 17 00:00:00 2001 From: Yang Zhang Date: Fri, 28 Aug 2015 09:58:54 +0800 Subject: Add qemu 2.4.0 Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5 Signed-off-by: Yang Zhang --- qemu/hw/alpha/dp264.c | 184 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 184 insertions(+) create mode 100644 qemu/hw/alpha/dp264.c (limited to 'qemu/hw/alpha/dp264.c') diff --git a/qemu/hw/alpha/dp264.c b/qemu/hw/alpha/dp264.c new file mode 100644 index 000000000..f86e7bb83 --- /dev/null +++ b/qemu/hw/alpha/dp264.c @@ -0,0 +1,184 @@ +/* + * QEMU Alpha DP264/CLIPPER hardware system emulator. + * + * Choose CLIPPER IRQ mappings over, say, DP264, MONET, or WEBBRICK + * variants because CLIPPER doesn't have an SMC669 SuperIO controller + * that we need to emulate as well. + */ + +#include "hw/hw.h" +#include "elf.h" +#include "hw/loader.h" +#include "hw/boards.h" +#include "alpha_sys.h" +#include "sysemu/sysemu.h" +#include "hw/timer/mc146818rtc.h" +#include "hw/ide.h" +#include "hw/timer/i8254.h" +#include "hw/char/serial.h" + +#define MAX_IDE_BUS 2 + +static uint64_t cpu_alpha_superpage_to_phys(void *opaque, uint64_t addr) +{ + if (((addr >> 41) & 3) == 2) { + addr &= 0xffffffffffull; + } + return addr; +} + +/* Note that there are at least 3 viewpoints of IRQ numbers on Alpha systems. + (0) The dev_irq_n lines into the cpu, which we totally ignore, + (1) The DRIR lines in the typhoon chipset, + (2) The "vector" aka mangled interrupt number reported by SRM PALcode, + (3) The interrupt number assigned by the kernel. + The following function is concerned with (1) only. */ + +static int clipper_pci_map_irq(PCIDevice *d, int irq_num) +{ + int slot = d->devfn >> 3; + + assert(irq_num >= 0 && irq_num <= 3); + + return (slot + 1) * 4 + irq_num; +} + +static void clipper_init(MachineState *machine) +{ + ram_addr_t ram_size = machine->ram_size; + const char *cpu_model = machine->cpu_model; + const char *kernel_filename = machine->kernel_filename; + const char *kernel_cmdline = machine->kernel_cmdline; + const char *initrd_filename = machine->initrd_filename; + AlphaCPU *cpus[4]; + PCIBus *pci_bus; + ISABus *isa_bus; + qemu_irq rtc_irq; + long size, i; + char *palcode_filename; + uint64_t palcode_entry, palcode_low, palcode_high; + uint64_t kernel_entry, kernel_low, kernel_high; + + /* Create up to 4 cpus. */ + memset(cpus, 0, sizeof(cpus)); + for (i = 0; i < smp_cpus; ++i) { + cpus[i] = cpu_alpha_init(cpu_model ? cpu_model : "ev67"); + } + + cpus[0]->env.trap_arg0 = ram_size; + cpus[0]->env.trap_arg1 = 0; + cpus[0]->env.trap_arg2 = smp_cpus; + + /* Init the chipset. */ + pci_bus = typhoon_init(ram_size, &isa_bus, &rtc_irq, cpus, + clipper_pci_map_irq); + + /* Since we have an SRM-compatible PALcode, use the SRM epoch. */ + rtc_init(isa_bus, 1900, rtc_irq); + + pit_init(isa_bus, 0x40, 0, NULL); + isa_create_simple(isa_bus, "i8042"); + + /* VGA setup. Don't bother loading the bios. */ + pci_vga_init(pci_bus); + + /* Serial code setup. */ + serial_hds_isa_init(isa_bus, MAX_SERIAL_PORTS); + + /* 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); + } + + /* IDE disk setup. */ + { + DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS]; + ide_drive_get(hd, ARRAY_SIZE(hd)); + + pci_cmd646_ide_init(pci_bus, hd, 0); + } + + /* Load PALcode. Given that this is not "real" cpu palcode, + but one explicitly written for the emulation, we might as + well load it directly from and ELF image. */ + palcode_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, + bios_name ? bios_name : "palcode-clipper"); + if (palcode_filename == NULL) { + hw_error("no palcode provided\n"); + exit(1); + } + size = load_elf(palcode_filename, cpu_alpha_superpage_to_phys, + NULL, &palcode_entry, &palcode_low, &palcode_high, + 0, EM_ALPHA, 0); + if (size < 0) { + hw_error("could not load palcode '%s'\n", palcode_filename); + exit(1); + } + g_free(palcode_filename); + + /* Start all cpus at the PALcode RESET entry point. */ + for (i = 0; i < smp_cpus; ++i) { + cpus[i]->env.pal_mode = 1; + cpus[i]->env.pc = palcode_entry; + cpus[i]->env.palbr = palcode_entry; + } + + /* Load a kernel. */ + if (kernel_filename) { + uint64_t param_offset; + + size = load_elf(kernel_filename, cpu_alpha_superpage_to_phys, + NULL, &kernel_entry, &kernel_low, &kernel_high, + 0, EM_ALPHA, 0); + if (size < 0) { + hw_error("could not load kernel '%s'\n", kernel_filename); + exit(1); + } + + cpus[0]->env.trap_arg1 = kernel_entry; + + param_offset = kernel_low - 0x6000; + + if (kernel_cmdline) { + pstrcpy_targphys("cmdline", param_offset, 0x100, kernel_cmdline); + } + + if (initrd_filename) { + long initrd_base, initrd_size; + + initrd_size = get_image_size(initrd_filename); + if (initrd_size < 0) { + hw_error("could not load initial ram disk '%s'\n", + initrd_filename); + exit(1); + } + + /* Put the initrd image as high in memory as possible. */ + initrd_base = (ram_size - initrd_size) & TARGET_PAGE_MASK; + load_image_targphys(initrd_filename, initrd_base, + ram_size - initrd_base); + + address_space_stq(&address_space_memory, param_offset + 0x100, + initrd_base + 0xfffffc0000000000ULL, + MEMTXATTRS_UNSPECIFIED, + NULL); + address_space_stq(&address_space_memory, param_offset + 0x108, + initrd_size, MEMTXATTRS_UNSPECIFIED, NULL); + } + } +} + +static QEMUMachine clipper_machine = { + .name = "clipper", + .desc = "Alpha DP264/CLIPPER", + .init = clipper_init, + .max_cpus = 4, + .is_default = 1, +}; + +static void clipper_machine_init(void) +{ + qemu_register_machine(&clipper_machine); +} + +machine_init(clipper_machine_init); -- cgit 1.2.3-korg