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-rw-r--r--hw/alpha/Makefile.objs4
-rw-r--r--hw/alpha/dp264.c182
-rw-r--r--hw/alpha/pci.c109
3 files changed, 294 insertions, 1 deletions
diff --git a/hw/alpha/Makefile.objs b/hw/alpha/Makefile.objs
index af1c07fa7c..db868d2ea6 100644
--- a/hw/alpha/Makefile.objs
+++ b/hw/alpha/Makefile.objs
@@ -1,4 +1,6 @@
obj-y = mc146818rtc.o
-obj-y += alpha_pci.o alpha_dp264.o alpha_typhoon.o
+obj-y += alpha_typhoon.o
obj-y := $(addprefix ../,$(obj-y))
+
+obj-y += dp264.o pci.o
diff --git a/hw/alpha/dp264.c b/hw/alpha/dp264.c
new file mode 100644
index 0000000000..13aaa57b90
--- /dev/null
+++ b/hw/alpha/dp264.c
@@ -0,0 +1,182 @@
+/*
+ * 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 "hw/alpha_sys.h"
+#include "sysemu/sysemu.h"
+#include "hw/mc146818rtc.h"
+#include "hw/ide.h"
+#include "hw/i8254.h"
+#include "hw/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(QEMUMachineInitArgs *args)
+{
+ ram_addr_t ram_size = args->ram_size;
+ const char *cpu_model = args->cpu_model;
+ const char *kernel_filename = args->kernel_filename;
+ const char *kernel_cmdline = args->kernel_cmdline;
+ const char *initrd_filename = args->initrd_filename;
+ AlphaCPU *cpus[4];
+ PCIBus *pci_bus;
+ ISABus *isa_bus;
+ qemu_irq rtc_irq;
+ long size, i;
+ const 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);
+
+ rtc_init(isa_bus, 1980, 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. */
+ for (i = 0; i < MAX_SERIAL_PORTS; ++i) {
+ if (serial_hds[i]) {
+ serial_isa_init(isa_bus, i, serial_hds[i]);
+ }
+ }
+
+ /* Network setup. e1000 is good enough, failing Tulip support. */
+ for (i = 0; i < nb_nics; i++) {
+ pci_nic_init_nofail(&nd_table[i], "e1000", NULL);
+ }
+
+ /* IDE disk setup. */
+ {
+ DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
+ ide_drive_get(hd, MAX_IDE_BUS);
+
+ 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 = (bios_name ? bios_name : "palcode-clipper");
+ palcode_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, palcode_filename);
+ 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);
+ }
+
+ /* 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);
+
+ stq_phys(param_offset + 0x100, initrd_base + 0xfffffc0000000000ULL);
+ stq_phys(param_offset + 0x108, initrd_size);
+ }
+ }
+}
+
+static QEMUMachine clipper_machine = {
+ .name = "clipper",
+ .desc = "Alpha DP264/CLIPPER",
+ .init = clipper_init,
+ .max_cpus = 4,
+ .is_default = 1,
+ DEFAULT_MACHINE_OPTIONS,
+};
+
+static void clipper_machine_init(void)
+{
+ qemu_register_machine(&clipper_machine);
+}
+
+machine_init(clipper_machine_init);
diff --git a/hw/alpha/pci.c b/hw/alpha/pci.c
new file mode 100644
index 0000000000..84628686ad
--- /dev/null
+++ b/hw/alpha/pci.c
@@ -0,0 +1,109 @@
+/*
+ * QEMU Alpha PCI support functions.
+ *
+ * Some of this isn't very Alpha specific at all.
+ *
+ * ??? Sparse memory access not implemented.
+ */
+
+#include "config.h"
+#include "hw/alpha_sys.h"
+#include "qemu/log.h"
+#include "sysemu/sysemu.h"
+
+
+/* PCI IO reads/writes, to byte-word addressable memory. */
+/* ??? Doesn't handle multiple PCI busses. */
+
+static uint64_t bw_io_read(void *opaque, hwaddr addr, unsigned size)
+{
+ switch (size) {
+ case 1:
+ return cpu_inb(addr);
+ case 2:
+ return cpu_inw(addr);
+ case 4:
+ return cpu_inl(addr);
+ }
+ abort();
+}
+
+static void bw_io_write(void *opaque, hwaddr addr,
+ uint64_t val, unsigned size)
+{
+ switch (size) {
+ case 1:
+ cpu_outb(addr, val);
+ break;
+ case 2:
+ cpu_outw(addr, val);
+ break;
+ case 4:
+ cpu_outl(addr, val);
+ break;
+ default:
+ abort();
+ }
+}
+
+const MemoryRegionOps alpha_pci_bw_io_ops = {
+ .read = bw_io_read,
+ .write = bw_io_write,
+ .endianness = DEVICE_LITTLE_ENDIAN,
+ .impl = {
+ .min_access_size = 1,
+ .max_access_size = 4,
+ },
+};
+
+/* PCI config space reads/writes, to byte-word addressable memory. */
+static uint64_t bw_conf1_read(void *opaque, hwaddr addr,
+ unsigned size)
+{
+ PCIBus *b = opaque;
+ return pci_data_read(b, addr, size);
+}
+
+static void bw_conf1_write(void *opaque, hwaddr addr,
+ uint64_t val, unsigned size)
+{
+ PCIBus *b = opaque;
+ pci_data_write(b, addr, val, size);
+}
+
+const MemoryRegionOps alpha_pci_conf1_ops = {
+ .read = bw_conf1_read,
+ .write = bw_conf1_write,
+ .endianness = DEVICE_LITTLE_ENDIAN,
+ .impl = {
+ .min_access_size = 1,
+ .max_access_size = 4,
+ },
+};
+
+/* PCI/EISA Interrupt Acknowledge Cycle. */
+
+static uint64_t iack_read(void *opaque, hwaddr addr, unsigned size)
+{
+ return pic_read_irq(isa_pic);
+}
+
+static void special_write(void *opaque, hwaddr addr,
+ uint64_t val, unsigned size)
+{
+ qemu_log("pci: special write cycle");
+}
+
+const MemoryRegionOps alpha_pci_iack_ops = {
+ .read = iack_read,
+ .write = special_write,
+ .endianness = DEVICE_LITTLE_ENDIAN,
+ .valid = {
+ .min_access_size = 4,
+ .max_access_size = 4,
+ },
+ .impl = {
+ .min_access_size = 4,
+ .max_access_size = 4,
+ },
+};
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