kvm/powerpc: Add MPC8544DS board support

This patch add an emulation of MPC8544DS board.
It can work on All E500 platforms.

Signed-off-by: Liu Yu <yu.liu@freescale.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6663 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 284 insertions, 0 deletions

diff --git a/hw/ppce500_mpc8544ds.c b/hw/ppce500_mpc8544ds.c
new file mode 100644
index 0000000..8fa0383
--- /dev/null
+++ b/hw/ppce500_mpc8544ds.c
@@ -0,0 +1,284 @@
+/*
+ * Qemu PowerPC MPC8544DS board emualtion
+ *
+ * Copyright (C) 2009 Freescale Semiconductor, Inc. All rights reserved.
+ *
+ * Author: Yu Liu,     <yu.liu@freescale.com>
+ *
+ * This file is derived from hw/ppc440_bamboo.c,
+ * the copyright for that material belongs to the original owners.
+ *
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of  the GNU General  Public License as published by
+ * the Free Software Foundation;  either version 2 of the  License, or
+ * (at your option) any later version.
+ */
+
+#include <dirent.h>
+
+#include "config.h"
+#include "qemu-common.h"
+#include "net.h"
+#include "hw.h"
+#include "pc.h"
+#include "pci.h"
+#include "virtio-blk.h"
+#include "boards.h"
+#include "sysemu.h"
+#include "kvm.h"
+#include "kvm_ppc.h"
+#include "device_tree.h"
+#include "openpic.h"
+#include "ppce500.h"
+
+#define BINARY_DEVICE_TREE_FILE    "mpc8544ds.dtb"
+#define UIMAGE_LOAD_BASE           0
+#define DTB_LOAD_BASE              0x600000
+#define INITRD_LOAD_BASE           0x2000000
+
+#define RAM_SIZES_ALIGN            (64UL << 20)
+
+#define MPC8544_CCSRBAR_BASE       0xE0000000
+#define MPC8544_MPIC_REGS_BASE     (MPC8544_CCSRBAR_BASE + 0x40000)
+#define MPC8544_SERIAL0_REGS_BASE  (MPC8544_CCSRBAR_BASE + 0x4500)
+#define MPC8544_SERIAL1_REGS_BASE  (MPC8544_CCSRBAR_BASE + 0x4600)
+#define MPC8544_PCI_REGS_BASE      (MPC8544_CCSRBAR_BASE + 0x8000)
+#define MPC8544_PCI_REGS_SIZE      0x1000
+#define MPC8544_PCI_IO             0xE1000000
+#define MPC8544_PCI_IOLEN          0x10000
+
+static int mpc8544_copy_soc_cell(void *fdt, const char *node, const char *prop)
+{
+    uint32_t cell;
+    int ret;
+
+    ret = kvmppc_read_host_property(node, prop, &cell, sizeof(cell));
+    if (ret < 0) {
+        fprintf(stderr, "couldn't read host %s/%s\n", node, prop);
+        goto out;
+    }
+
+    ret = qemu_devtree_setprop_cell(fdt, "/cpus/PowerPC,8544@0",
+                                prop, cell);
+    if (ret < 0) {
+        fprintf(stderr, "couldn't set guest /cpus/PowerPC,8544@0/%s\n", prop);
+        goto out;
+    }
+
+out:
+    return ret;
+}
+
+static void *mpc8544_load_device_tree(void *addr,
+                                     uint32_t ramsize,
+                                     target_phys_addr_t initrd_base,
+                                     target_phys_addr_t initrd_size,
+                                     const char *kernel_cmdline)
+{
+    void *fdt = NULL;
+#ifdef HAVE_FDT
+    uint32_t mem_reg_property[] = {0, ramsize};
+    char *path;
+    int pathlen;
+    int ret;
+
+    pathlen = snprintf(NULL, 0, "%s/%s", bios_dir, BINARY_DEVICE_TREE_FILE) + 1;
+    path = qemu_malloc(pathlen);
+
+    snprintf(path, pathlen, "%s/%s", bios_dir, BINARY_DEVICE_TREE_FILE);
+
+    fdt = load_device_tree(path, addr);
+    qemu_free(path);
+    if (fdt == NULL)
+        goto out;
+
+    /* Manipulate device tree in memory. */
+    ret = qemu_devtree_setprop(fdt, "/memory", "reg", mem_reg_property,
+                               sizeof(mem_reg_property));
+    if (ret < 0)
+        fprintf(stderr, "couldn't set /memory/reg\n");
+
+    ret = qemu_devtree_setprop_cell(fdt, "/chosen", "linux,initrd-start",
+                                    initrd_base);
+    if (ret < 0)
+        fprintf(stderr, "couldn't set /chosen/linux,initrd-start\n");
+
+    ret = qemu_devtree_setprop_cell(fdt, "/chosen", "linux,initrd-end",
+                                    (initrd_base + initrd_size));
+    if (ret < 0)
+        fprintf(stderr, "couldn't set /chosen/linux,initrd-end\n");
+
+    ret = qemu_devtree_setprop_string(fdt, "/chosen", "bootargs",
+                                      kernel_cmdline);
+    if (ret < 0)
+        fprintf(stderr, "couldn't set /chosen/bootargs\n");
+
+    if (kvm_enabled()) {
+        struct dirent *dirp;
+        DIR *dp;
+        char buf[128];
+
+        if ((dp = opendir("/proc/device-tree/cpus/")) == NULL) {
+            printf("Can't open directory /proc/device-tree/cpus/\n");
+            goto out;
+        }
+
+        buf[0] = '\0';
+        while ((dirp = readdir(dp)) != NULL) {
+            if (strncmp(dirp->d_name, "PowerPC", 7) == 0) {
+                snprintf(buf, 128, "/cpus/%s", dirp->d_name);
+                break;
+            }
+        }
+        closedir(dp);
+        if (buf[0] == '\0') {
+            printf("Unknow host!\n");
+            goto out;
+        }
+
+        mpc8544_copy_soc_cell(fdt, buf, "clock-frequency");
+        mpc8544_copy_soc_cell(fdt, buf, "timebase-frequency");
+    }
+
+out:
+#endif
+
+    return fdt;
+}
+
+static void mpc8544ds_init(ram_addr_t ram_size, int vga_ram_size,
+                         const char *boot_device,
+                         const char *kernel_filename,
+                         const char *kernel_cmdline,
+                         const char *initrd_filename,
+                         const char *cpu_model)
+{
+    PCIBus *pci_bus;
+    CPUState *env;
+    uint64_t elf_entry;
+    uint64_t elf_lowaddr;
+    target_ulong entry=0;
+    target_ulong loadaddr=UIMAGE_LOAD_BASE;
+    target_long kernel_size=0;
+    target_ulong dt_base=DTB_LOAD_BASE;
+    target_ulong initrd_base=INITRD_LOAD_BASE;
+    target_long initrd_size=0;
+    void *fdt;
+    int i=0;
+    unsigned int pci_irq_nrs[4] = {1, 2, 3, 4};
+    qemu_irq *irqs, *mpic, *pci_irqs;
+    SerialState * serial[2];
+
+    /* Setup CPU */
+    env = cpu_ppc_init("e500v2_v30");
+    if (!env) {
+        fprintf(stderr, "Unable to initialize CPU!\n");
+        exit(1);
+    }
+
+    /* Fixup Memory size on a alignment boundary */
+    ram_size &= ~(RAM_SIZES_ALIGN - 1);
+
+    /* Register Memory */
+    cpu_register_physical_memory(0, ram_size, 0);
+
+    /* MPIC */
+    irqs = qemu_mallocz(sizeof(qemu_irq) * OPENPIC_OUTPUT_NB);
+    irqs[OPENPIC_OUTPUT_INT] = ((qemu_irq *)env->irq_inputs)[PPCE500_INPUT_INT];
+    irqs[OPENPIC_OUTPUT_CINT] = ((qemu_irq *)env->irq_inputs)[PPCE500_INPUT_CINT];
+    mpic = mpic_init(MPC8544_MPIC_REGS_BASE, 1, &irqs, NULL);
+
+    /* Serial */
+    if (serial_hds[0])
+        serial[0] = serial_mm_init(MPC8544_SERIAL0_REGS_BASE,
+                               0, mpic[12+26], 399193,
+                        serial_hds[0], 1);
+
+    if (serial_hds[1])
+        serial[0] = serial_mm_init(MPC8544_SERIAL1_REGS_BASE,
+                        0, mpic[12+26], 399193,
+                        serial_hds[0], 1);
+
+    /* PCI */
+    pci_irqs = qemu_malloc(sizeof(qemu_irq) * 4);
+    pci_irqs[0] = mpic[pci_irq_nrs[0]];
+    pci_irqs[1] = mpic[pci_irq_nrs[1]];
+    pci_irqs[2] = mpic[pci_irq_nrs[2]];
+    pci_irqs[3] = mpic[pci_irq_nrs[3]];
+    pci_bus = ppce500_pci_init(pci_irqs, MPC8544_PCI_REGS_BASE);
+    if (!pci_bus)
+        printf("couldn't create PCI controller!\n");
+
+    isa_mmio_init(MPC8544_PCI_IO, MPC8544_PCI_IOLEN);
+
+    if (pci_bus) {
+        int unit_id = 0;
+
+        /* Add virtio block devices. */
+        while ((i = drive_get_index(IF_VIRTIO, 0, unit_id)) != -1) {
+            virtio_blk_init(pci_bus, drives_table[i].bdrv);
+            unit_id++;
+        }
+
+        /* Register network interfaces. */
+        for (i = 0; i < nb_nics; i++) {
+            pci_nic_init(pci_bus, &nd_table[i], -1, "virtio");
+        }
+    }
+
+    /* Load kernel. */
+    if (kernel_filename) {
+        kernel_size = load_uimage(kernel_filename, &entry, &loadaddr, NULL);
+        if (kernel_size < 0) {
+            kernel_size = load_elf(kernel_filename, 0, &elf_entry, &elf_lowaddr,
+                                   NULL);
+            entry = elf_entry;
+            loadaddr = elf_lowaddr;
+        }
+        /* XXX try again as binary */
+        if (kernel_size < 0) {
+            fprintf(stderr, "qemu: could not load kernel '%s'\n",
+                    kernel_filename);
+            exit(1);
+        }
+    }
+
+    /* Load initrd. */
+    if (initrd_filename) {
+        initrd_size = load_image(initrd_filename, phys_ram_base + initrd_base);
+
+        if (initrd_size < 0) {
+            fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
+                    initrd_filename);
+            exit(1);
+        }
+    }
+
+    /* If we're loading a kernel directly, we must load the device tree too. */
+    if (kernel_filename) {
+        fdt = mpc8544_load_device_tree(phys_ram_base + dt_base, ram_size,
+                                      initrd_base, initrd_size, kernel_cmdline);
+        if (fdt == NULL) {
+            fprintf(stderr, "couldn't load device tree\n");
+            exit(1);
+        }
+
+        /* Set initial guest state. */
+        env->gpr[1] = (16<<20) - 8;
+        env->gpr[3] = dt_base;
+        env->nip = entry;
+        /* XXX we currently depend on KVM to create some initial TLB entries. */
+    }
+
+    if (kvm_enabled())
+        kvmppc_init();
+
+    return;
+}
+
+QEMUMachine mpc8544ds_machine = {
+    .name = "mpc8544ds",
+    .desc = "mpc8544ds",
+    .init = mpc8544ds_init,
+    .ram_require = RAM_SIZES_ALIGN | RAMSIZE_FIXED,
+};