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Diffstat (limited to 'hw/virtex_ml507.c')
| -rw-r--r-- | hw/virtex_ml507.c | 278 |
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); |