hw/petalogix_ml605_mmu.c - qemu - Git at Google

 /*
  * Model of Petalogix linux reference design targeting Xilinx Spartan ml605
  * board.
  *
  * Copyright (c) 2011 Michal Simek <monstr@monstr.eu>
  * Copyright (c) 2011 PetaLogix
  * 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"
 #include "loader.h"
 #include "elf.h"
 #include "blockdev.h"
 #include "pc.h"

 #include "xilinx_axidma.h"

 #define LMB_BRAM_SIZE  (128 * 1024)
 #define FLASH_SIZE     (32 * 1024 * 1024)

 static struct
 {
     uint32_t bootstrap_pc;
     uint32_t cmdline;
     uint32_t fdt;
 } boot_info;

 static void main_cpu_reset(void *opaque)
 {
     CPUState *env = opaque;

     cpu_reset(env);
     env->regs[5] = boot_info.cmdline;
     env->regs[7] = boot_info.fdt;
     env->sregs[SR_PC] = boot_info.bootstrap_pc;
     env->pvr.regs[10] = 0x0e000000; /* virtex 6 */
     /* setup pvr to match kernel setting */
     env->pvr.regs[5] |= PVR5_DCACHE_WRITEBACK_MASK;
     env->pvr.regs[0] |= PVR0_USE_FPU_MASK | PVR0_ENDI;
     env->pvr.regs[0] = (env->pvr.regs[0] & ~PVR0_VERSION_MASK) | (0x14 << 8);
     env->pvr.regs[2] ^= PVR2_USE_FPU2_MASK;
     env->pvr.regs[4] = 0xc56b8000;
     env->pvr.regs[5] = 0xc56be000;
 }

 #define BINARY_DEVICE_TREE_FILE "petalogix-ml605.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)
 {
     char *path;
     int fdt_size;
 #ifdef CONFIG_FDT
     void *fdt;
     int r;

     /* Try the local "mb.dtb" override.  */
     fdt = load_device_tree("mb.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("mb.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 uint64_t translate_kernel_address(void *opaque, uint64_t addr)
 {
     return addr - 0x30000000LL;
 }

 #define MEMORY_BASEADDR 0x50000000
 #define FLASH_BASEADDR 0x86000000
 #define INTC_BASEADDR 0x81800000
 #define TIMER_BASEADDR 0x83c00000
 #define UART16550_BASEADDR 0x83e00000
 #define AXIENET_BASEADDR 0x82780000
 #define AXIDMA_BASEADDR 0x84600000

 static void
 petalogix_ml605_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;
     DriveInfo *dinfo;
     int i;
     target_phys_addr_t ddr_base = MEMORY_BASEADDR;
     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);

     qemu_register_reset(main_cpu_reset, env);

     /* Attach emulated BRAM through the LMB.  */
     phys_lmb_bram = qemu_ram_alloc(NULL, "petalogix_ml605.lmb_bram",
                                    LMB_BRAM_SIZE);
     cpu_register_physical_memory(0x00000000, LMB_BRAM_SIZE,
                                  phys_lmb_bram | IO_MEM_RAM);

     phys_ram = qemu_ram_alloc(NULL, "petalogix_ml605.ram", ram_size);
     cpu_register_physical_memory(ddr_base, ram_size, phys_ram | IO_MEM_RAM);

     phys_flash = qemu_ram_alloc(NULL, "petalogix_ml605.flash", FLASH_SIZE);
     dinfo = drive_get(IF_PFLASH, 0, 0);
     /* 5th parameter 2 means bank-width
      * 10th paremeter 0 means little-endian */
     pflash_cfi01_register(FLASH_BASEADDR, phys_flash,
                           dinfo ? dinfo->bdrv : NULL, (64 * 1024),
                           FLASH_SIZE >> 16,
                           2, 0x89, 0x18, 0x0000, 0x0, 0);


     cpu_irq = microblaze_pic_init_cpu(env);
     dev = xilinx_intc_create(INTC_BASEADDR, cpu_irq[0], 4);
     for (i = 0; i < 32; i++) {
         irq[i] = qdev_get_gpio_in(dev, i);
     }

     serial_mm_init(UART16550_BASEADDR + 0x1000, 2, irq[5], 115200,
                    serial_hds[0], 1, 0);

     /* 2 timers at irq 2 @ 100 Mhz.  */
     xilinx_timer_create(TIMER_BASEADDR, irq[2], 2, 100 * 1000000);

     /* axi ethernet and dma initialization. TODO: Dynamically connect them.  */
     {
         static struct XilinxDMAConnection dmach;

         xilinx_axiethernet_create(&dmach, &nd_table[0], 0x82780000,
                                   irq[3], 0x1000, 0x1000);
         xilinx_axiethernetdma_create(&dmach, 0x84600000,
                                      irq[1], irq[0], 100 * 1000000);
     }

     if (kernel_filename) {
         uint64_t entry, low, high;
         uint32_t base32;
         int big_endian = 0;

 #ifdef TARGET_WORDS_BIGENDIAN
         big_endian = 1;
 #endif

         /* Boots a kernel elf binary.  */
         kernel_size = load_elf(kernel_filename, NULL, NULL,
                                &entry, &low, &high,
                                big_endian, ELF_MACHINE, 0);
         base32 = entry;
         if (base32 == 0xc0000000) {
             kernel_size = load_elf(kernel_filename, translate_kernel_address,
                                    NULL, &entry, NULL, NULL,
                                    big_endian, ELF_MACHINE, 0);
         }
         /* Always boot into physical ram.  */
         boot_info.bootstrap_pc = ddr_base + (entry & 0x0fffffff);

         /* If it wasn't an ELF image, try an u-boot image.  */
         if (kernel_size < 0) {
             target_phys_addr_t uentry, loadaddr;

             kernel_size = load_uimage(kernel_filename, &uentry, &loadaddr, 0);
             boot_info.bootstrap_pc = uentry;
             high = (loadaddr + kernel_size + 3) & ~3;
         }

         /* Not an ELF image nor an u-boot image, try a RAW image.  */
         if (kernel_size < 0) {
             kernel_size = load_image_targphys(kernel_filename, ddr_base,
                                               ram_size);
             boot_info.bootstrap_pc = ddr_base;
             high = (ddr_base + kernel_size + 3) & ~3;
         }

         boot_info.cmdline = high + 4096;
         if (kernel_cmdline && strlen(kernel_cmdline)) {
             pstrcpy_targphys("cmdline", boot_info.cmdline, 256, kernel_cmdline);
         }
         /* Provide a device-tree.  */
         boot_info.fdt = boot_info.cmdline + 4096;
         petalogix_load_device_tree(boot_info.fdt, ram_size,
                                    0, 0,
                                    kernel_cmdline);
     }
 }

 static QEMUMachine petalogix_ml605_machine = {
     .name = "petalogix-ml605",
     .desc = "PetaLogix linux refdesign for xilinx ml605 little endian",
     .init = petalogix_ml605_init,
     .is_default = 0
 };

 static void petalogix_ml605_machine_init(void)
 {
     qemu_register_machine(&petalogix_ml605_machine);
 }

 machine_init(petalogix_ml605_machine_init);
	/*
	* Model of Petalogix linux reference design targeting Xilinx Spartan ml605
	* board.
	*
	* Copyright (c) 2011 Michal Simek <monstr@monstr.eu>
	* Copyright (c) 2011 PetaLogix
	* 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"
	#include "loader.h"
	#include "elf.h"
	#include "blockdev.h"
	#include "pc.h"

	#include "xilinx_axidma.h"

	#define LMB_BRAM_SIZE (128 * 1024)
	#define FLASH_SIZE (32 * 1024 * 1024)

	static struct
	{
	uint32_t bootstrap_pc;
	uint32_t cmdline;
	uint32_t fdt;
	} boot_info;

	static void main_cpu_reset(void *opaque)
	{
	CPUState *env = opaque;

	cpu_reset(env);
	env->regs[5] = boot_info.cmdline;
	env->regs[7] = boot_info.fdt;
	env->sregs[SR_PC] = boot_info.bootstrap_pc;
	env->pvr.regs[10] = 0x0e000000; /* virtex 6 */
	/* setup pvr to match kernel setting */
	env->pvr.regs[5] \|= PVR5_DCACHE_WRITEBACK_MASK;
	env->pvr.regs[0] \|= PVR0_USE_FPU_MASK \| PVR0_ENDI;
	env->pvr.regs[0] = (env->pvr.regs[0] & ~PVR0_VERSION_MASK) \| (0x14 << 8);
	env->pvr.regs[2] ^= PVR2_USE_FPU2_MASK;
	env->pvr.regs[4] = 0xc56b8000;
	env->pvr.regs[5] = 0xc56be000;
	}

	#define BINARY_DEVICE_TREE_FILE "petalogix-ml605.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)
	{
	char *path;
	int fdt_size;
	#ifdef CONFIG_FDT
	void *fdt;
	int r;

	/* Try the local "mb.dtb" override. */
	fdt = load_device_tree("mb.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("mb.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 uint64_t translate_kernel_address(void *opaque, uint64_t addr)
	{
	return addr - 0x30000000LL;
	}

	#define MEMORY_BASEADDR 0x50000000
	#define FLASH_BASEADDR 0x86000000
	#define INTC_BASEADDR 0x81800000
	#define TIMER_BASEADDR 0x83c00000
	#define UART16550_BASEADDR 0x83e00000
	#define AXIENET_BASEADDR 0x82780000
	#define AXIDMA_BASEADDR 0x84600000

	static void
	petalogix_ml605_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;
	DriveInfo *dinfo;
	int i;
	target_phys_addr_t ddr_base = MEMORY_BASEADDR;
	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);

	qemu_register_reset(main_cpu_reset, env);

	/* Attach emulated BRAM through the LMB. */
	phys_lmb_bram = qemu_ram_alloc(NULL, "petalogix_ml605.lmb_bram",
	LMB_BRAM_SIZE);
	cpu_register_physical_memory(0x00000000, LMB_BRAM_SIZE,
	phys_lmb_bram \| IO_MEM_RAM);

	phys_ram = qemu_ram_alloc(NULL, "petalogix_ml605.ram", ram_size);
	cpu_register_physical_memory(ddr_base, ram_size, phys_ram \| IO_MEM_RAM);

	phys_flash = qemu_ram_alloc(NULL, "petalogix_ml605.flash", FLASH_SIZE);
	dinfo = drive_get(IF_PFLASH, 0, 0);
	/* 5th parameter 2 means bank-width
	* 10th paremeter 0 means little-endian */
	pflash_cfi01_register(FLASH_BASEADDR, phys_flash,
	dinfo ? dinfo->bdrv : NULL, (64 * 1024),
	FLASH_SIZE >> 16,
	2, 0x89, 0x18, 0x0000, 0x0, 0);


	cpu_irq = microblaze_pic_init_cpu(env);
	dev = xilinx_intc_create(INTC_BASEADDR, cpu_irq[0], 4);
	for (i = 0; i < 32; i++) {
	irq[i] = qdev_get_gpio_in(dev, i);
	}

	serial_mm_init(UART16550_BASEADDR + 0x1000, 2, irq[5], 115200,
	serial_hds[0], 1, 0);

	/* 2 timers at irq 2 @ 100 Mhz. */
	xilinx_timer_create(TIMER_BASEADDR, irq[2], 2, 100 * 1000000);

	/* axi ethernet and dma initialization. TODO: Dynamically connect them. */
	{
	static struct XilinxDMAConnection dmach;

	xilinx_axiethernet_create(&dmach, &nd_table[0], 0x82780000,
	irq[3], 0x1000, 0x1000);
	xilinx_axiethernetdma_create(&dmach, 0x84600000,
	irq[1], irq[0], 100 * 1000000);
	}

	if (kernel_filename) {
	uint64_t entry, low, high;
	uint32_t base32;
	int big_endian = 0;

	#ifdef TARGET_WORDS_BIGENDIAN
	big_endian = 1;
	#endif

	/* Boots a kernel elf binary. */
	kernel_size = load_elf(kernel_filename, NULL, NULL,
	&entry, &low, &high,
	big_endian, ELF_MACHINE, 0);
	base32 = entry;
	if (base32 == 0xc0000000) {
	kernel_size = load_elf(kernel_filename, translate_kernel_address,
	NULL, &entry, NULL, NULL,
	big_endian, ELF_MACHINE, 0);
	}
	/* Always boot into physical ram. */
	boot_info.bootstrap_pc = ddr_base + (entry & 0x0fffffff);

	/* If it wasn't an ELF image, try an u-boot image. */
	if (kernel_size < 0) {
	target_phys_addr_t uentry, loadaddr;

	kernel_size = load_uimage(kernel_filename, &uentry, &loadaddr, 0);
	boot_info.bootstrap_pc = uentry;
	high = (loadaddr + kernel_size + 3) & ~3;
	}

	/* Not an ELF image nor an u-boot image, try a RAW image. */
	if (kernel_size < 0) {
	kernel_size = load_image_targphys(kernel_filename, ddr_base,
	ram_size);
	boot_info.bootstrap_pc = ddr_base;
	high = (ddr_base + kernel_size + 3) & ~3;
	}

	boot_info.cmdline = high + 4096;
	if (kernel_cmdline && strlen(kernel_cmdline)) {
	pstrcpy_targphys("cmdline", boot_info.cmdline, 256, kernel_cmdline);
	}
	/* Provide a device-tree. */
	boot_info.fdt = boot_info.cmdline + 4096;
	petalogix_load_device_tree(boot_info.fdt, ram_size,
	0, 0,
	kernel_cmdline);
	}
	}

	static QEMUMachine petalogix_ml605_machine = {
	.name = "petalogix-ml605",
	.desc = "PetaLogix linux refdesign for xilinx ml605 little endian",
	.init = petalogix_ml605_init,
	.is_default = 0
	};

	static void petalogix_ml605_machine_init(void)
	{
	qemu_register_machine(&petalogix_ml605_machine);
	}

	machine_init(petalogix_ml605_machine_init);