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Add the first Microblaze little endian platform. Platform uses uart16550, axi ethernet, timer, intc. Signed-off-by: Michal Simek <monstr@monstr.eu> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@petalogix.com>remotes/github/stable-0.15
Michal Simek
15 years ago
committed by
Edgar E. Iglesias
Edgar E. Iglesias
5 changed files with 308 additions and 1 deletions
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/*
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* Model of Petalogix linux reference design targeting Xilinx Spartan ml605 |
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* board. |
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* |
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* Copyright (c) 2011 Michal Simek <monstr@monstr.eu> |
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* Copyright (c) 2011 PetaLogix |
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* Copyright (c) 2009 Edgar E. Iglesias. |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a copy |
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* of this software and associated documentation files (the "Software"), to deal |
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* in the Software without restriction, including without limitation the rights |
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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* copies of the Software, and to permit persons to whom the Software is |
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* furnished to do so, subject to the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be included in |
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* all copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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* THE SOFTWARE. |
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*/ |
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#include "sysbus.h" |
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#include "hw.h" |
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#include "net.h" |
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#include "flash.h" |
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#include "sysemu.h" |
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#include "devices.h" |
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#include "boards.h" |
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#include "device_tree.h" |
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#include "xilinx.h" |
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#include "loader.h" |
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#include "elf.h" |
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#include "blockdev.h" |
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#include "pc.h" |
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#include "xilinx_axidma.h" |
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#define LMB_BRAM_SIZE (128 * 1024) |
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#define FLASH_SIZE (32 * 1024 * 1024) |
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static struct |
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{ |
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uint32_t bootstrap_pc; |
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uint32_t cmdline; |
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uint32_t fdt; |
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} boot_info; |
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static void main_cpu_reset(void *opaque) |
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{ |
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CPUState *env = opaque; |
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cpu_reset(env); |
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env->regs[5] = boot_info.cmdline; |
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env->regs[7] = boot_info.fdt; |
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env->sregs[SR_PC] = boot_info.bootstrap_pc; |
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env->pvr.regs[10] = 0x0e000000; /* virtex 6 */ |
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/* setup pvr to match kernel setting */ |
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env->pvr.regs[5] |= PVR5_DCACHE_WRITEBACK_MASK; |
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env->pvr.regs[0] |= PVR0_USE_FPU_MASK | PVR0_ENDI; |
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env->pvr.regs[0] = (env->pvr.regs[0] & ~PVR0_VERSION_MASK) | (0x14 << 8); |
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env->pvr.regs[2] ^= PVR2_USE_FPU2_MASK; |
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env->pvr.regs[4] = 0xc56b8000; |
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env->pvr.regs[5] = 0xc56be000; |
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} |
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#define BINARY_DEVICE_TREE_FILE "petalogix-ml605.dtb" |
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static int petalogix_load_device_tree(target_phys_addr_t addr, |
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uint32_t ramsize, |
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target_phys_addr_t initrd_base, |
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target_phys_addr_t initrd_size, |
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const char *kernel_cmdline) |
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{ |
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char *path; |
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int fdt_size; |
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#ifdef CONFIG_FDT |
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void *fdt; |
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int r; |
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/* Try the local "mb.dtb" override. */ |
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fdt = load_device_tree("mb.dtb", &fdt_size); |
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if (!fdt) { |
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path = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE); |
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if (path) { |
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fdt = load_device_tree(path, &fdt_size); |
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qemu_free(path); |
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} |
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if (!fdt) { |
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return 0; |
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} |
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} |
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r = qemu_devtree_setprop_string(fdt, "/chosen", "bootargs", kernel_cmdline); |
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if (r < 0) { |
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fprintf(stderr, "couldn't set /chosen/bootargs\n"); |
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} |
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cpu_physical_memory_write(addr, (void *)fdt, fdt_size); |
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#else |
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/* We lack libfdt so we cannot manipulate the fdt. Just pass on the blob
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to the kernel. */ |
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fdt_size = load_image_targphys("mb.dtb", addr, 0x10000); |
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if (fdt_size < 0) { |
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path = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE); |
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if (path) { |
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fdt_size = load_image_targphys(path, addr, 0x10000); |
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qemu_free(path); |
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} |
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} |
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if (kernel_cmdline) { |
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fprintf(stderr, |
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"Warning: missing libfdt, cannot pass cmdline to kernel!\n"); |
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} |
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#endif |
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return fdt_size; |
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} |
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static uint64_t translate_kernel_address(void *opaque, uint64_t addr) |
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{ |
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return addr - 0x30000000LL; |
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} |
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#define MEMORY_BASEADDR 0x50000000 |
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#define FLASH_BASEADDR 0x86000000 |
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#define INTC_BASEADDR 0x81800000 |
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#define TIMER_BASEADDR 0x83c00000 |
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#define UART16550_BASEADDR 0x83e00000 |
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#define AXIENET_BASEADDR 0x82780000 |
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#define AXIDMA_BASEADDR 0x84600000 |
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static void |
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petalogix_ml605_init(ram_addr_t ram_size, |
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const char *boot_device, |
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const char *kernel_filename, |
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const char *kernel_cmdline, |
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const char *initrd_filename, const char *cpu_model) |
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{ |
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DeviceState *dev; |
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CPUState *env; |
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int kernel_size; |
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DriveInfo *dinfo; |
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int i; |
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target_phys_addr_t ddr_base = MEMORY_BASEADDR; |
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ram_addr_t phys_lmb_bram; |
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ram_addr_t phys_ram; |
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ram_addr_t phys_flash; |
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qemu_irq irq[32], *cpu_irq; |
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void *serial = NULL; |
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/* init CPUs */ |
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if (cpu_model == NULL) { |
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cpu_model = "microblaze"; |
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} |
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env = cpu_init(cpu_model); |
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qemu_register_reset(main_cpu_reset, env); |
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/* Attach emulated BRAM through the LMB. */ |
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phys_lmb_bram = qemu_ram_alloc(NULL, "petalogix_ml605.lmb_bram", |
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LMB_BRAM_SIZE); |
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cpu_register_physical_memory(0x00000000, LMB_BRAM_SIZE, |
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phys_lmb_bram | IO_MEM_RAM); |
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phys_ram = qemu_ram_alloc(NULL, "petalogix_ml605.ram", ram_size); |
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cpu_register_physical_memory(ddr_base, ram_size, phys_ram | IO_MEM_RAM); |
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phys_flash = qemu_ram_alloc(NULL, "petalogix_ml605.flash", FLASH_SIZE); |
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dinfo = drive_get(IF_PFLASH, 0, 0); |
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/* 5th parameter 2 means bank-width
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* 10th paremeter 0 means little-endian */ |
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pflash_cfi01_register(FLASH_BASEADDR, phys_flash, |
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dinfo ? dinfo->bdrv : NULL, (64 * 1024), |
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FLASH_SIZE >> 16, |
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2, 0x89, 0x18, 0x0000, 0x0, 0); |
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cpu_irq = microblaze_pic_init_cpu(env); |
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dev = xilinx_intc_create(INTC_BASEADDR, cpu_irq[0], 4); |
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for (i = 0; i < 32; i++) { |
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irq[i] = qdev_get_gpio_in(dev, i); |
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} |
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serial = serial_mm_init(UART16550_BASEADDR + 0x1000, 2, irq[5], |
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115200, serial_hds[0], 1, 0); |
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/* 2 timers at irq 2 @ 100 Mhz. */ |
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xilinx_timer_create(TIMER_BASEADDR, irq[2], 2, 100 * 1000000); |
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/* axi ethernet and dma initialization. TODO: Dynamically connect them. */ |
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{ |
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static struct XilinxDMAConnection dmach; |
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xilinx_axiethernet_create(&dmach, &nd_table[0], 0x82780000, |
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irq[3], 0x1000, 0x1000); |
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xilinx_axiethernetdma_create(&dmach, 0x84600000, |
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irq[1], irq[0], 100 * 1000000); |
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} |
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if (kernel_filename) { |
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uint64_t entry, low, high; |
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uint32_t base32; |
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int big_endian = 0; |
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#ifdef TARGET_WORDS_BIGENDIAN |
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big_endian = 1; |
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#endif |
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/* Boots a kernel elf binary. */ |
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kernel_size = load_elf(kernel_filename, NULL, NULL, |
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&entry, &low, &high, |
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big_endian, ELF_MACHINE, 0); |
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base32 = entry; |
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if (base32 == 0xc0000000) { |
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kernel_size = load_elf(kernel_filename, translate_kernel_address, |
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NULL, &entry, NULL, NULL, |
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big_endian, ELF_MACHINE, 0); |
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} |
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/* Always boot into physical ram. */ |
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boot_info.bootstrap_pc = ddr_base + (entry & 0x0fffffff); |
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/* If it wasn't an ELF image, try an u-boot image. */ |
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if (kernel_size < 0) { |
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target_phys_addr_t uentry, loadaddr; |
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kernel_size = load_uimage(kernel_filename, &uentry, &loadaddr, 0); |
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boot_info.bootstrap_pc = uentry; |
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high = (loadaddr + kernel_size + 3) & ~3; |
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} |
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/* Not an ELF image nor an u-boot image, try a RAW image. */ |
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if (kernel_size < 0) { |
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kernel_size = load_image_targphys(kernel_filename, ddr_base, |
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ram_size); |
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boot_info.bootstrap_pc = ddr_base; |
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high = (ddr_base + kernel_size + 3) & ~3; |
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} |
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boot_info.cmdline = high + 4096; |
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if (kernel_cmdline && strlen(kernel_cmdline)) { |
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pstrcpy_targphys("cmdline", boot_info.cmdline, 256, kernel_cmdline); |
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} |
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/* Provide a device-tree. */ |
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boot_info.fdt = boot_info.cmdline + 4096; |
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petalogix_load_device_tree(boot_info.fdt, ram_size, |
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0, 0, |
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kernel_cmdline); |
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} |
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} |
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static QEMUMachine petalogix_ml605_machine = { |
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.name = "petalogix-ml605", |
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.desc = "PetaLogix linux refdesign for xilinx ml605 little endian", |
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.init = petalogix_ml605_init, |
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.is_default = 0 |
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}; |
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static void petalogix_ml605_machine_init(void) |
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{ |
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qemu_register_machine(&petalogix_ml605_machine); |
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} |
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machine_init(petalogix_ml605_machine_init); |
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