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-rw-r--r--hw/petalogix_s3adsp1800_mmu.c184
-rw-r--r--hw/xilinx.h50
-rw-r--r--target-microblaze/machine.c11
3 files changed, 245 insertions, 0 deletions
diff --git a/hw/petalogix_s3adsp1800_mmu.c b/hw/petalogix_s3adsp1800_mmu.c
new file mode 100644
index 0000000000..b31751579b
--- /dev/null
+++ b/hw/petalogix_s3adsp1800_mmu.c
@@ -0,0 +1,184 @@
+/*
+ * Model of Petalogix linux reference design targeting Xilinx Spartan 3ADSP-1800
+ * boards.
+ *
+ * Copyright (c) 2009 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 "net.h"
+#include "flash.h"
+#include "sysemu.h"
+#include "devices.h"
+#include "boards.h"
+#include "device_tree.h"
+#include "xilinx.h"
+
+#define LMB_BRAM_SIZE (128 * 1024)
+#define FLASH_SIZE (16 * 1024 * 1024)
+
+static uint32_t bootstrap_pc;
+
+static void main_cpu_reset(void *opaque)
+{
+ CPUState *env = opaque;
+ cpu_reset(env);
+ env->sregs[SR_PC] = bootstrap_pc;
+}
+
+#define BINARY_DEVICE_TREE_FILE "petalogix-s3adsp1800.dtb"
+static int petalogix_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)
+{
+ void *fdt;
+ char *path = NULL;
+ int fdt_size;
+ int pathlen;
+ int r;
+
+ /* Try the local "mb.dtb" override. */
+ fdt = load_device_tree("mb.dtb", &fdt_size);
+ if (!fdt) {
+ 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(BINARY_DEVICE_TREE_FILE, &fdt_size);
+ 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");
+ printf("write fdt to addr=%x fdtsize=%d\n", addr, fdt_size);
+ cpu_physical_memory_write (addr, (void *)fdt, fdt_size);
+ return fdt_size;
+}
+
+static void
+petalogix_s3adsp1800_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;
+ int kernel_size;
+ int i;
+ target_phys_addr_t ddr_base = 0x90000000;
+ ram_addr_t phys_lmb_bram;
+ ram_addr_t phys_ram;
+ ram_addr_t phys_flash;
+ qemu_irq irq[32], *cpu_irq;
+
+ /* init CPUs */
+ if (cpu_model == NULL) {
+ cpu_model = "microblaze";
+ }
+ env = cpu_init(cpu_model);
+
+ env->pvr.regs[10] = 0x0c000000; /* spartan 3a dsp family. */
+ qemu_register_reset(main_cpu_reset, 0, env);
+
+ /* Attach emulated BRAM through the LMB. */
+ phys_lmb_bram = qemu_ram_alloc(LMB_BRAM_SIZE);
+ cpu_register_physical_memory(0x00000000, LMB_BRAM_SIZE,
+ phys_lmb_bram | IO_MEM_RAM);
+
+ phys_ram = qemu_ram_alloc(ram_size);
+ cpu_register_physical_memory(ddr_base, ram_size, phys_ram | IO_MEM_RAM);
+
+ phys_flash = qemu_ram_alloc(FLASH_SIZE);
+ i = drive_get_index(IF_PFLASH, 0, 0);
+ pflash_cfi02_register(0xa0000000, phys_flash,
+ i != -1 ? drives_table[i].bdrv : NULL, (64 * 1024),
+ FLASH_SIZE >> 16,
+ 1, 1, 0x0000, 0x0000, 0x0000, 0x0000,
+ 0x555, 0x2aa);
+
+ cpu_irq = microblaze_pic_init_cpu(env);
+ dev = xilinx_intc_create(0x81800000, cpu_irq[0], 2);
+ for (i = 0; i < 32; i++) {
+ irq[i] = qdev_get_gpio_in(dev, i);
+ }
+
+ sysbus_create_simple("xilinx,uartlite", 0x84000000, irq[3]);
+ /* 2 timers at irq 2 @ 62 Mhz. */
+ xilinx_timer_create(0x83c00000, irq[0], 2, 62 * 1000000);
+ xilinx_ethlite_create(&nd_table[0], 0x81000000, irq[1], 0, 0);
+
+ if (kernel_filename) {
+ uint64_t entry, low, high;
+ int kcmdline_len;
+ uint32_t base32;
+
+ /* Boots a kernel elf binary. */
+ kernel_size = load_elf(kernel_filename, 0,
+ &entry, &low, &high);
+ base32 = entry;
+ if (base32 == 0xc0000000) {
+ kernel_size = load_elf(kernel_filename, -0x30000000LL,
+ &entry, NULL, NULL);
+ }
+ /* Always boot into physical ram. */
+ bootstrap_pc = ddr_base + (entry & 0x0fffffff);
+ if (kernel_size < 0) {
+ /* If we failed loading ELF's try a raw image. */
+ kernel_size = load_image_targphys(kernel_filename, ddr_base,
+ ram_size);
+ bootstrap_pc = ddr_base;
+ }
+
+ env->regs[5] = ddr_base + kernel_size;
+ if (kernel_cmdline && (kcmdline_len = strlen(kernel_cmdline))) {
+ pstrcpy_targphys(env->regs[5], 256, kernel_cmdline);
+ }
+ env->regs[6] = 0;
+ /* Provide a device-tree. */
+ env->regs[7] = ddr_base + kernel_size + 256;
+ petalogix_load_device_tree(env->regs[7], ram_size,
+ env->regs[6], 0,
+ kernel_cmdline);
+ }
+
+ env->sregs[SR_PC] = bootstrap_pc;
+}
+
+static QEMUMachine petalogix_s3adsp1800_machine = {
+ .name = "petalogix-s3adsp1800",
+ .desc = "Petalogix linux refdesign for xilinx Spartan 3ADSP1800",
+ .init = petalogix_s3adsp1800_init,
+ .is_default = 1
+};
+
+static void petalogix_s3adsp1800_machine_init(void)
+{
+ qemu_register_machine(&petalogix_s3adsp1800_machine);
+}
+
+machine_init(petalogix_s3adsp1800_machine_init);
diff --git a/hw/xilinx.h b/hw/xilinx.h
new file mode 100644
index 0000000000..9707a0e0b5
--- /dev/null
+++ b/hw/xilinx.h
@@ -0,0 +1,50 @@
+
+/* OPB Interrupt Controller. */
+qemu_irq *microblaze_pic_init_cpu(CPUState *env);
+
+static inline DeviceState *
+xilinx_intc_create(target_phys_addr_t base, qemu_irq irq, int kind_of_intr)
+{
+ DeviceState *dev;
+
+ dev = qdev_create(NULL, "xilinx,intc");
+ qdev_set_prop_int(dev, "kind-of-intr", kind_of_intr);
+ qdev_init(dev);
+ sysbus_mmio_map(sysbus_from_qdev(dev), 0, base);
+ sysbus_connect_irq(sysbus_from_qdev(dev), 0, irq);
+ return dev;
+}
+
+/* OPB Timer/Counter. */
+static inline DeviceState *
+xilinx_timer_create(target_phys_addr_t base, qemu_irq irq, int nr, int freq)
+{
+ DeviceState *dev;
+
+ dev = qdev_create(NULL, "xilinx,timer");
+ qdev_set_prop_int(dev, "nr-timers", nr);
+ qdev_set_prop_int(dev, "frequency", freq);
+ qdev_init(dev);
+ sysbus_mmio_map(sysbus_from_qdev(dev), 0, base);
+ sysbus_connect_irq(sysbus_from_qdev(dev), 0, irq);
+ return dev;
+}
+
+/* XPS Ethernet Lite MAC. */
+static inline DeviceState *
+xilinx_ethlite_create(NICInfo *nd, target_phys_addr_t base, qemu_irq irq,
+ int txpingpong, int rxpingpong)
+{
+ DeviceState *dev;
+
+ qemu_check_nic_model(nd, "xilinx-ethlite");
+
+ dev = qdev_create(NULL, "xilinx,ethlite");
+ qdev_set_netdev(dev, nd);
+ qdev_set_prop_int(dev, "txpingpong", txpingpong);
+ qdev_set_prop_int(dev, "rxpingpong", rxpingpong);
+ qdev_init(dev);
+ sysbus_mmio_map(sysbus_from_qdev(dev), 0, base);
+ sysbus_connect_irq(sysbus_from_qdev(dev), 0, irq);
+ return dev;
+}
diff --git a/target-microblaze/machine.c b/target-microblaze/machine.c
new file mode 100644
index 0000000000..1be1c351b2
--- /dev/null
+++ b/target-microblaze/machine.c
@@ -0,0 +1,11 @@
+#include "hw/hw.h"
+#include "hw/boards.h"
+
+void cpu_save(QEMUFile *f, void *opaque)
+{
+}
+
+int cpu_load(QEMUFile *f, void *opaque, int version_id)
+{
+ return 0;
+}
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-30 12:51:40 +0000