2 * Model of Petalogix linux reference design targeting Xilinx Spartan ml605
6 * Copyright (c) 2011 PetaLogix
7 * Copyright (c) 2009 Edgar E. Iglesias.
9 * Permission is hereby granted, free of charge, to any person obtaining a copy
10 * of this software and associated documentation files (the "Software"), to deal
11 * in the Software without restriction, including without limitation the rights
12 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
13 * copies of the Software, and to permit persons to whom the Software is
14 * furnished to do so, subject to the following conditions:
16 * The above copyright notice and this permission notice shall be included in
17 * all copies or substantial portions of the Software.
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
22 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
23 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
24 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
35 #include "device_tree.h"
41 #include "exec-memory.h"
43 #include "microblaze_pic_cpu.h"
44 #include "xilinx_axidma.h"
46 #define LMB_BRAM_SIZE (128 * 1024)
47 #define FLASH_SIZE (32 * 1024 * 1024)
51 uint32_t bootstrap_pc;
56 static void main_cpu_reset(void *opaque)
58 CPUState *env = opaque;
61 env->regs[5] = boot_info.cmdline;
62 env->regs[7] = boot_info.fdt;
63 env->sregs[SR_PC] = boot_info.bootstrap_pc;
64 env->pvr.regs[10] = 0x0e000000; /* virtex 6 */
65 /* setup pvr to match kernel setting */
66 env->pvr.regs[5] |= PVR5_DCACHE_WRITEBACK_MASK;
67 env->pvr.regs[0] |= PVR0_USE_FPU_MASK | PVR0_ENDI;
68 env->pvr.regs[0] = (env->pvr.regs[0] & ~PVR0_VERSION_MASK) | (0x14 << 8);
69 env->pvr.regs[2] ^= PVR2_USE_FPU2_MASK;
70 env->pvr.regs[4] = 0xc56b8000;
71 env->pvr.regs[5] = 0xc56be000;
74 #define BINARY_DEVICE_TREE_FILE "petalogix-ml605.dtb"
75 static int petalogix_load_device_tree(target_phys_addr_t addr,
77 target_phys_addr_t initrd_base,
78 target_phys_addr_t initrd_size,
79 const char *kernel_cmdline)
87 /* Try the local "mb.dtb" override. */
88 fdt = load_device_tree("mb.dtb", &fdt_size);
90 path = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE);
92 fdt = load_device_tree(path, &fdt_size);
100 r = qemu_devtree_setprop_string(fdt, "/chosen", "bootargs", kernel_cmdline);
102 fprintf(stderr, "couldn't set /chosen/bootargs\n");
104 cpu_physical_memory_write(addr, (void *)fdt, fdt_size);
106 /* We lack libfdt so we cannot manipulate the fdt. Just pass on the blob
108 fdt_size = load_image_targphys("mb.dtb", addr, 0x10000);
110 path = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE);
112 fdt_size = load_image_targphys(path, addr, 0x10000);
117 if (kernel_cmdline) {
119 "Warning: missing libfdt, cannot pass cmdline to kernel!\n");
125 static uint64_t translate_kernel_address(void *opaque, uint64_t addr)
127 return addr - 0x30000000LL;
130 #define MEMORY_BASEADDR 0x50000000
131 #define FLASH_BASEADDR 0x86000000
132 #define INTC_BASEADDR 0x81800000
133 #define TIMER_BASEADDR 0x83c00000
134 #define UART16550_BASEADDR 0x83e00000
135 #define AXIENET_BASEADDR 0x82780000
136 #define AXIDMA_BASEADDR 0x84600000
139 petalogix_ml605_init(ram_addr_t ram_size,
140 const char *boot_device,
141 const char *kernel_filename,
142 const char *kernel_cmdline,
143 const char *initrd_filename, const char *cpu_model)
145 MemoryRegion *address_space_mem = get_system_memory();
151 target_phys_addr_t ddr_base = MEMORY_BASEADDR;
152 MemoryRegion *phys_lmb_bram = g_new(MemoryRegion, 1);
153 MemoryRegion *phys_ram = g_new(MemoryRegion, 1);
154 qemu_irq irq[32], *cpu_irq;
157 if (cpu_model == NULL) {
158 cpu_model = "microblaze";
160 env = cpu_init(cpu_model);
162 qemu_register_reset(main_cpu_reset, env);
164 /* Attach emulated BRAM through the LMB. */
165 memory_region_init_ram(phys_lmb_bram, NULL, "petalogix_ml605.lmb_bram",
167 memory_region_add_subregion(address_space_mem, 0x00000000, phys_lmb_bram);
169 memory_region_init_ram(phys_ram, NULL, "petalogix_ml605.ram", ram_size);
170 memory_region_add_subregion(address_space_mem, ddr_base, phys_ram);
172 dinfo = drive_get(IF_PFLASH, 0, 0);
173 /* 5th parameter 2 means bank-width
174 * 10th paremeter 0 means little-endian */
175 pflash_cfi01_register(FLASH_BASEADDR,
176 NULL, "petalogix_ml605.flash", FLASH_SIZE,
177 dinfo ? dinfo->bdrv : NULL, (64 * 1024),
179 2, 0x89, 0x18, 0x0000, 0x0, 0);
182 cpu_irq = microblaze_pic_init_cpu(env);
183 dev = xilinx_intc_create(INTC_BASEADDR, cpu_irq[0], 4);
184 for (i = 0; i < 32; i++) {
185 irq[i] = qdev_get_gpio_in(dev, i);
188 serial_mm_init(address_space_mem, UART16550_BASEADDR + 0x1000, 2,
189 irq[5], 115200, serial_hds[0], DEVICE_LITTLE_ENDIAN);
191 /* 2 timers at irq 2 @ 100 Mhz. */
192 xilinx_timer_create(TIMER_BASEADDR, irq[2], 2, 100 * 1000000);
194 /* axi ethernet and dma initialization. TODO: Dynamically connect them. */
196 static struct XilinxDMAConnection dmach;
198 xilinx_axiethernet_create(&dmach, &nd_table[0], 0x82780000,
199 irq[3], 0x1000, 0x1000);
200 xilinx_axiethernetdma_create(&dmach, 0x84600000,
201 irq[1], irq[0], 100 * 1000000);
204 if (kernel_filename) {
205 uint64_t entry, low, high;
209 #ifdef TARGET_WORDS_BIGENDIAN
213 /* Boots a kernel elf binary. */
214 kernel_size = load_elf(kernel_filename, NULL, NULL,
216 big_endian, ELF_MACHINE, 0);
218 if (base32 == 0xc0000000) {
219 kernel_size = load_elf(kernel_filename, translate_kernel_address,
220 NULL, &entry, NULL, NULL,
221 big_endian, ELF_MACHINE, 0);
223 /* Always boot into physical ram. */
224 boot_info.bootstrap_pc = ddr_base + (entry & 0x0fffffff);
226 /* If it wasn't an ELF image, try an u-boot image. */
227 if (kernel_size < 0) {
228 target_phys_addr_t uentry, loadaddr;
230 kernel_size = load_uimage(kernel_filename, &uentry, &loadaddr, 0);
231 boot_info.bootstrap_pc = uentry;
232 high = (loadaddr + kernel_size + 3) & ~3;
235 /* Not an ELF image nor an u-boot image, try a RAW image. */
236 if (kernel_size < 0) {
237 kernel_size = load_image_targphys(kernel_filename, ddr_base,
239 boot_info.bootstrap_pc = ddr_base;
240 high = (ddr_base + kernel_size + 3) & ~3;
243 boot_info.cmdline = high + 4096;
244 if (kernel_cmdline && strlen(kernel_cmdline)) {
245 pstrcpy_targphys("cmdline", boot_info.cmdline, 256, kernel_cmdline);
247 /* Provide a device-tree. */
248 boot_info.fdt = boot_info.cmdline + 4096;
249 petalogix_load_device_tree(boot_info.fdt, ram_size,
255 static QEMUMachine petalogix_ml605_machine = {
256 .name = "petalogix-ml605",
257 .desc = "PetaLogix linux refdesign for xilinx ml605 little endian",
258 .init = petalogix_ml605_init,
262 static void petalogix_ml605_machine_init(void)
264 qemu_register_machine(&petalogix_ml605_machine);
267 machine_init(petalogix_ml605_machine_init);