hw/virtex_ml507.c - qemu - Git at Google

 /*
  * 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 "serial.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 "exec-memory.h"

 #include "ppc.h"
 #include "ppc4xx.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(CPUPPCState *env,
                                      target_ulong va,
                                      hwaddr pa)
 {
     ppcemb_tlb_t *tlb = &env->tlb.tlbe[0];

     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.tlbe[1];
     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 PowerPCCPU *ppc440_init_xilinx(ram_addr_t *ram_size,
                                       int do_init,
                                       const char *cpu_model,
                                       uint32_t sysclk)
 {
     PowerPCCPU *cpu;
     CPUPPCState *env;
     qemu_irq *irqs;

     cpu = cpu_ppc_init(cpu_model);
     if (cpu == NULL) {
         fprintf(stderr, "Unable to initialize CPU!\n");
         exit(1);
     }
     env = &cpu->env;

     ppc_booke_timers_init(cpu, sysclk, 0/* no flags */);

     ppc_dcr_init(env, NULL, NULL);

     /* interrupt controller */
     irqs = g_malloc0(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];
     ppcuic_init(env, irqs, 0x0C0, 0, 1);
     return cpu;
 }

 static void main_cpu_reset(void *opaque)
 {
     PowerPCCPU *cpu = opaque;
     CPUPPCState *env = &cpu->env;
     struct boot_info *bi = env->load_info;

     cpu_reset(CPU(cpu));
     /* 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(hwaddr addr,
                                       uint32_t ramsize,
                                       hwaddr initrd_base,
                                       hwaddr 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);
             g_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);
             g_free(path);
         }
     }

     if (kernel_cmdline) {
         fprintf(stderr,
                 "Warning: missing libfdt, cannot pass cmdline to kernel!\n");
     }
 #endif
     return fdt_size;
 }

 static void virtex_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;
     MemoryRegion *address_space_mem = get_system_memory();
     DeviceState *dev;
     PowerPCCPU *cpu;
     CPUPPCState *env;
     hwaddr ram_base = 0;
     DriveInfo *dinfo;
     MemoryRegion *phys_ram = g_new(MemoryRegion, 1);
     qemu_irq irq[32], *cpu_irq;
     int kernel_size;
     int i;

     /* init CPUs */
     if (cpu_model == NULL) {
         cpu_model = "440-Xilinx";
     }

     cpu = ppc440_init_xilinx(&ram_size, 1, cpu_model, 400000000);
     env = &cpu->env;
     qemu_register_reset(main_cpu_reset, cpu);

     memory_region_init_ram(phys_ram, "ram", ram_size);
     vmstate_register_ram_global(phys_ram);
     memory_region_add_subregion(address_space_mem, ram_base, phys_ram);

     dinfo = drive_get(IF_PFLASH, 0, 0);
     pflash_cfi01_register(0xfc000000, NULL, "virtex.flash", FLASH_SIZE,
                           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(address_space_mem, 0x83e01003ULL, 2, irq[9], 115200,
                    serial_hds[0], DEVICE_LITTLE_ENDIAN);

     /* 2 timers at irq 2 @ 62 Mhz.  */
     xilinx_timer_create(0x83c00000, irq[3], 0, 62 * 1000000);

     if (kernel_filename) {
         uint64_t entry, low, high;
         hwaddr boot_offset;

         /* Boots a kernel elf binary.  */
         kernel_size = load_elf(kernel_filename, NULL, NULL,
                                &entry, &low, &high, 1, ELF_MACHINE, 0);
         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);
	/*
	* 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 "serial.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 "exec-memory.h"

	#include "ppc.h"
	#include "ppc4xx.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(CPUPPCState *env,
	target_ulong va,
	hwaddr pa)
	{
	ppcemb_tlb_t *tlb = &env->tlb.tlbe[0];

	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.tlbe[1];
	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 PowerPCCPU ppc440_init_xilinx(ram_addr_t ram_size,
	int do_init,
	const char *cpu_model,
	uint32_t sysclk)
	{
	PowerPCCPU *cpu;
	CPUPPCState *env;
	qemu_irq *irqs;

	cpu = cpu_ppc_init(cpu_model);
	if (cpu == NULL) {
	fprintf(stderr, "Unable to initialize CPU!\n");
	exit(1);
	}
	env = &cpu->env;

	ppc_booke_timers_init(cpu, sysclk, 0/* no flags */);

	ppc_dcr_init(env, NULL, NULL);

	/* interrupt controller */
	irqs = g_malloc0(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];
	ppcuic_init(env, irqs, 0x0C0, 0, 1);
	return cpu;
	}

	static void main_cpu_reset(void *opaque)
	{
	PowerPCCPU *cpu = opaque;
	CPUPPCState *env = &cpu->env;
	struct boot_info *bi = env->load_info;

	cpu_reset(CPU(cpu));
	/* 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(hwaddr addr,
	uint32_t ramsize,
	hwaddr initrd_base,
	hwaddr 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);
	g_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);
	g_free(path);
	}
	}

	if (kernel_cmdline) {
	fprintf(stderr,
	"Warning: missing libfdt, cannot pass cmdline to kernel!\n");
	}
	#endif
	return fdt_size;
	}

	static void virtex_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;
	MemoryRegion *address_space_mem = get_system_memory();
	DeviceState *dev;
	PowerPCCPU *cpu;
	CPUPPCState *env;
	hwaddr ram_base = 0;
	DriveInfo *dinfo;
	MemoryRegion *phys_ram = g_new(MemoryRegion, 1);
	qemu_irq irq[32], *cpu_irq;
	int kernel_size;
	int i;

	/* init CPUs */
	if (cpu_model == NULL) {
	cpu_model = "440-Xilinx";
	}

	cpu = ppc440_init_xilinx(&ram_size, 1, cpu_model, 400000000);
	env = &cpu->env;
	qemu_register_reset(main_cpu_reset, cpu);

	memory_region_init_ram(phys_ram, "ram", ram_size);
	vmstate_register_ram_global(phys_ram);
	memory_region_add_subregion(address_space_mem, ram_base, phys_ram);

	dinfo = drive_get(IF_PFLASH, 0, 0);
	pflash_cfi01_register(0xfc000000, NULL, "virtex.flash", FLASH_SIZE,
	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(address_space_mem, 0x83e01003ULL, 2, irq[9], 115200,
	serial_hds[0], DEVICE_LITTLE_ENDIAN);

	/* 2 timers at irq 2 @ 62 Mhz. */
	xilinx_timer_create(0x83c00000, irq[3], 0, 62 * 1000000);

	if (kernel_filename) {
	uint64_t entry, low, high;
	hwaddr boot_offset;

	/* Boots a kernel elf binary. */
	kernel_size = load_elf(kernel_filename, NULL, NULL,
	&entry, &low, &high, 1, ELF_MACHINE, 0);
	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);