2 * Model of Petalogix linux reference design targeting Xilinx Spartan 3ADSP-1800
5 * Copyright (c) 2009 Edgar E. Iglesias.
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
33 #include "device_tree.h"
36 #define LMB_BRAM_SIZE (128 * 1024)
37 #define FLASH_SIZE (16 * 1024 * 1024)
39 static uint32_t bootstrap_pc;
41 static void main_cpu_reset(void *opaque)
43 CPUState *env = opaque;
45 env->sregs[SR_PC] = bootstrap_pc;
48 #define BINARY_DEVICE_TREE_FILE "petalogix-s3adsp1800.dtb"
49 static int petalogix_load_device_tree(target_phys_addr_t addr,
51 target_phys_addr_t initrd_base,
52 target_phys_addr_t initrd_size,
53 const char *kernel_cmdline)
61 /* Try the local "mb.dtb" override. */
62 fdt = load_device_tree("mb.dtb", &fdt_size);
64 path = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE);
66 fdt = load_device_tree(path, &fdt_size);
73 r = qemu_devtree_setprop_string(fdt, "/chosen", "bootargs", kernel_cmdline);
75 fprintf(stderr, "couldn't set /chosen/bootargs\n");
76 cpu_physical_memory_write (addr, (void *)fdt, fdt_size);
78 /* We lack libfdt so we cannot manipulate the fdt. Just pass on the blob
80 fdt_size = load_image_targphys("mb.dtb", addr, 0x10000);
82 path = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE);
84 fdt_size = load_image_targphys(path, addr, 0x10000);
91 "Warning: missing libfdt, cannot pass cmdline to kernel!\n");
98 petalogix_s3adsp1800_init(ram_addr_t ram_size,
99 const char *boot_device,
100 const char *kernel_filename,
101 const char *kernel_cmdline,
102 const char *initrd_filename, const char *cpu_model)
109 target_phys_addr_t ddr_base = 0x90000000;
110 ram_addr_t phys_lmb_bram;
112 ram_addr_t phys_flash;
113 qemu_irq irq[32], *cpu_irq;
116 if (cpu_model == NULL) {
117 cpu_model = "microblaze";
119 env = cpu_init(cpu_model);
121 env->pvr.regs[10] = 0x0c000000; /* spartan 3a dsp family. */
122 qemu_register_reset(main_cpu_reset, env);
124 /* Attach emulated BRAM through the LMB. */
125 phys_lmb_bram = qemu_ram_alloc(LMB_BRAM_SIZE);
126 cpu_register_physical_memory(0x00000000, LMB_BRAM_SIZE,
127 phys_lmb_bram | IO_MEM_RAM);
129 phys_ram = qemu_ram_alloc(ram_size);
130 cpu_register_physical_memory(ddr_base, ram_size, phys_ram | IO_MEM_RAM);
132 phys_flash = qemu_ram_alloc(FLASH_SIZE);
133 dinfo = drive_get(IF_PFLASH, 0, 0);
134 pflash_cfi02_register(0xa0000000, phys_flash,
135 dinfo ? dinfo->bdrv : NULL, (64 * 1024),
137 1, 1, 0x0000, 0x0000, 0x0000, 0x0000,
140 cpu_irq = microblaze_pic_init_cpu(env);
141 dev = xilinx_intc_create(0x81800000, cpu_irq[0], 2);
142 for (i = 0; i < 32; i++) {
143 irq[i] = qdev_get_gpio_in(dev, i);
146 sysbus_create_simple("xilinx,uartlite", 0x84000000, irq[3]);
147 /* 2 timers at irq 2 @ 62 Mhz. */
148 xilinx_timer_create(0x83c00000, irq[0], 2, 62 * 1000000);
149 xilinx_ethlite_create(&nd_table[0], 0x81000000, irq[1], 0, 0);
151 if (kernel_filename) {
152 uint64_t entry, low, high;
156 /* Boots a kernel elf binary. */
157 kernel_size = load_elf(kernel_filename, 0,
158 &entry, &low, &high);
160 if (base32 == 0xc0000000) {
161 kernel_size = load_elf(kernel_filename, -0x30000000LL,
164 /* Always boot into physical ram. */
165 bootstrap_pc = ddr_base + (entry & 0x0fffffff);
166 if (kernel_size < 0) {
167 /* If we failed loading ELF's try a raw image. */
168 kernel_size = load_image_targphys(kernel_filename, ddr_base,
170 bootstrap_pc = ddr_base;
173 env->regs[5] = ddr_base + kernel_size;
174 if (kernel_cmdline && (kcmdline_len = strlen(kernel_cmdline))) {
175 pstrcpy_targphys(env->regs[5], 256, kernel_cmdline);
178 /* Provide a device-tree. */
179 env->regs[7] = ddr_base + kernel_size + 256;
180 petalogix_load_device_tree(env->regs[7], ram_size,
185 env->sregs[SR_PC] = bootstrap_pc;
188 static QEMUMachine petalogix_s3adsp1800_machine = {
189 .name = "petalogix-s3adsp1800",
190 .desc = "Petalogix linux refdesign for xilinx Spartan 3ADSP1800",
191 .init = petalogix_s3adsp1800_init,
195 static void petalogix_s3adsp1800_machine_init(void)
197 qemu_register_machine(&petalogix_s3adsp1800_machine);
200 machine_init(petalogix_s3adsp1800_machine_init);