powerpc: Add a virtex5 ml507 refdesign board

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>

1 files changed, 278 insertions, 0 deletions

diff --git a/hw/virtex_ml507.c b/hw/virtex_ml507.c
new file mode 100644
index 0000000..2af3b81
--- /dev/null
+++ b/hw/virtex_ml507.c
@@ -0,0 +1,278 @@
+/*
+ * Model of Xilinx Virtex5 ML507 PPC-440 refdesign.
+ *
+ * Copyright (c) 2010 Edgar E. Iglesias.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "sysbus.h"
+#include "hw.h"
+#include "pc.h"
+#include "net.h"
+#include "flash.h"
+#include "sysemu.h"
+#include "devices.h"
+#include "boards.h"
+#include "device_tree.h"
+#include "loader.h"
+#include "elf.h"
+#include "qemu-log.h"
+
+#include "ppc.h"
+#include "ppc4xx.h"
+#include "ppc440.h"
+#include "ppc405.h"
+
+#include "blockdev.h"
+#include "xilinx.h"
+
+#define EPAPR_MAGIC    (0x45504150)
+#define FLASH_SIZE     (16 * 1024 * 1024)
+
+static struct boot_info
+{
+    uint32_t bootstrap_pc;
+    uint32_t cmdline;
+    uint32_t fdt;
+    uint32_t ima_size;
+    void *vfdt;
+} boot_info;
+
+/* Create reset TLB entries for BookE, spanning the 32bit addr space.  */
+static void mmubooke_create_initial_mapping(CPUState *env,
+                                     target_ulong va,
+                                     target_phys_addr_t pa)
+{
+    ppcemb_tlb_t *tlb = &env->tlb[0].tlbe;
+
+    tlb->attr = 0;
+    tlb->prot = PAGE_VALID | ((PAGE_READ | PAGE_WRITE | PAGE_EXEC) << 4);
+    tlb->size = 1 << 31; /* up to 0x80000000  */
+    tlb->EPN = va & TARGET_PAGE_MASK;
+    tlb->RPN = pa & TARGET_PAGE_MASK;
+    tlb->PID = 0;
+
+    tlb = &env->tlb[1].tlbe;
+    tlb->attr = 0;
+    tlb->prot = PAGE_VALID | ((PAGE_READ | PAGE_WRITE | PAGE_EXEC) << 4);
+    tlb->size = 1 << 31; /* up to 0xffffffff  */
+    tlb->EPN = 0x80000000 & TARGET_PAGE_MASK;
+    tlb->RPN = 0x80000000 & TARGET_PAGE_MASK;
+    tlb->PID = 0;
+}
+
+static CPUState *ppc440_init_xilinx(ram_addr_t *ram_size,
+                                    int do_init,
+                                    const char *cpu_model,
+                                    clk_setup_t *cpu_clk, clk_setup_t *tb_clk,
+                                    uint32_t sysclk)
+{
+    CPUState *env;
+    qemu_irq *pic;
+    qemu_irq *irqs;
+
+    env = cpu_init(cpu_model);
+    if (!env) {
+        fprintf(stderr, "Unable to initialize CPU!\n");
+        exit(1);
+    }
+
+    cpu_clk->cb = NULL; /* We don't care about CPU clock frequency changes */
+    cpu_clk->opaque = env;
+    /* Set time-base frequency to sysclk */
+    tb_clk->cb = ppc_emb_timers_init(env, sysclk, PPC_INTERRUPT_DECR);
+    tb_clk->opaque = env;
+
+    ppc_dcr_init(env, NULL, NULL);
+
+    /* interrupt controller */
+    irqs = qemu_mallocz(sizeof(qemu_irq) * PPCUIC_OUTPUT_NB);
+    irqs[PPCUIC_OUTPUT_INT] = ((qemu_irq *)env->irq_inputs)[PPC40x_INPUT_INT];
+    irqs[PPCUIC_OUTPUT_CINT] = ((qemu_irq *)env->irq_inputs)[PPC40x_INPUT_CINT];
+    pic = ppcuic_init(env, irqs, 0x0C0, 0, 1);
+    return env;
+}
+
+static void main_cpu_reset(void *opaque)
+{
+    CPUState *env = opaque;
+    struct boot_info *bi = env->load_info;
+
+    cpu_reset(env);
+    /* Linux Kernel Parameters (passing device tree):
+       *   r3: pointer to the fdt
+       *   r4: 0
+       *   r5: 0
+       *   r6: epapr magic
+       *   r7: size of IMA in bytes
+       *   r8: 0
+       *   r9: 0
+    */
+    env->gpr[1] = (16<<20) - 8;
+    /* Provide a device-tree.  */
+    env->gpr[3] = bi->fdt;
+    env->nip = bi->bootstrap_pc;
+
+    /* Create a mapping for the kernel.  */
+    mmubooke_create_initial_mapping(env, 0, 0);
+    env->gpr[6] = tswap32(EPAPR_MAGIC);
+    env->gpr[7] = bi->ima_size;
+}
+
+#define BINARY_DEVICE_TREE_FILE "virtex-ml507.dtb"
+static int xilinx_load_device_tree(target_phys_addr_t addr,
+                                      uint32_t ramsize,
+                                      target_phys_addr_t initrd_base,
+                                      target_phys_addr_t initrd_size,
+                                      const char *kernel_cmdline)
+{
+    char *path;
+    int fdt_size;
+#ifdef CONFIG_FDT
+    void *fdt;
+    int r;
+
+    /* Try the local "ppc.dtb" override.  */
+    fdt = load_device_tree("ppc.dtb", &fdt_size);
+    if (!fdt) {
+        path = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE);
+        if (path) {
+            fdt = load_device_tree(path, &fdt_size);
+            qemu_free(path);
+        }
+        if (!fdt)
+            return 0;
+    }
+
+    r = qemu_devtree_setprop_string(fdt, "/chosen", "bootargs", kernel_cmdline);
+    if (r < 0)
+        fprintf(stderr, "couldn't set /chosen/bootargs\n");
+    cpu_physical_memory_write (addr, (void *)fdt, fdt_size);
+#else
+    /* We lack libfdt so we cannot manipulate the fdt. Just pass on the blob
+       to the kernel.  */
+    fdt_size = load_image_targphys("ppc.dtb", addr, 0x10000);
+    if (fdt_size < 0) {
+        path = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE);
+        if (path) {
+            fdt_size = load_image_targphys(path, addr, 0x10000);
+            qemu_free(path);
+        }
+    }
+
+    if (kernel_cmdline) {
+        fprintf(stderr,
+                "Warning: missing libfdt, cannot pass cmdline to kernel!\n");
+    }
+#endif
+    return fdt_size;
+}
+
+static void virtex_init(ram_addr_t ram_size,
+                        const char *boot_device,
+                        const char *kernel_filename,
+                        const char *kernel_cmdline,
+                        const char *initrd_filename, const char *cpu_model)
+{
+    DeviceState *dev;
+    CPUState *env;
+    target_phys_addr_t ram_base = 0;
+    DriveInfo *dinfo;
+    ram_addr_t phys_ram;
+    ram_addr_t phys_flash;
+    qemu_irq irq[32], *cpu_irq;
+    clk_setup_t clk_setup[7];
+    int kernel_size;
+    int i;
+
+    /* init CPUs */
+    if (cpu_model == NULL) {
+        cpu_model = "440-Xilinx";
+    }
+
+    memset(clk_setup, 0, sizeof(clk_setup));
+    env = ppc440_init_xilinx(&ram_size, 1, cpu_model, &clk_setup[0],
+                             &clk_setup[1], 400000000);
+    qemu_register_reset(main_cpu_reset, env);
+
+    phys_ram = qemu_ram_alloc(NULL, "ram", ram_size);
+    cpu_register_physical_memory(ram_base, ram_size, phys_ram | IO_MEM_RAM);
+
+    phys_flash = qemu_ram_alloc(NULL, "virtex.flash", FLASH_SIZE);
+    dinfo = drive_get(IF_PFLASH, 0, 0);
+    pflash_cfi01_register(0xfc000000, phys_flash,
+                          dinfo ? dinfo->bdrv : NULL, (64 * 1024),
+                          FLASH_SIZE >> 16,
+                          1, 0x89, 0x18, 0x0000, 0x0, 1);
+
+    cpu_irq = (qemu_irq *) &env->irq_inputs[PPC40x_INPUT_INT];
+    dev = xilinx_intc_create(0x81800000, cpu_irq[0], 0);
+    for (i = 0; i < 32; i++) {
+        irq[i] = qdev_get_gpio_in(dev, i);
+    }
+
+    serial_mm_init(0x83e01003ULL, 2, irq[9], 115200, serial_hds[0], 1, 0);
+
+    /* 2 timers at irq 2 @ 62 Mhz.  */
+    xilinx_timer_create(0x83c00000, irq[3], 2, 62 * 1000000);
+
+    if (kernel_filename) {
+        uint64_t entry, low, high;
+        uint32_t base32;
+        target_phys_addr_t boot_offset;
+
+        /* Boots a kernel elf binary.  */
+        kernel_size = load_elf(kernel_filename, NULL, NULL,
+                               &entry, &low, &high, 1, ELF_MACHINE, 0);
+        base32 = entry;
+        boot_info.bootstrap_pc = entry & 0x00ffffff;
+
+        if (kernel_size < 0) {
+            boot_offset = 0x1200000;
+            /* If we failed loading ELF's try a raw image.  */
+            kernel_size = load_image_targphys(kernel_filename,
+                                              boot_offset,
+                                              ram_size);
+            boot_info.bootstrap_pc = boot_offset;
+            high = boot_info.bootstrap_pc + kernel_size + 8192;
+        }
+
+        boot_info.ima_size = kernel_size;
+
+        /* Provide a device-tree.  */
+        boot_info.fdt = high + (8192 * 2);
+        boot_info.fdt &= ~8191;
+        xilinx_load_device_tree(boot_info.fdt, ram_size, 0, 0, kernel_cmdline);
+    }
+    env->load_info = &boot_info;
+}
+
+static QEMUMachine virtex_machine = {
+    .name = "virtex-ml507",
+    .desc = "Xilinx Virtex ML507 reference design",
+    .init = virtex_init,
+};
+
+static void virtex_machine_init(void)
+{
+    qemu_register_machine(&virtex_machine);
+}
+
+machine_init(virtex_machine_init);