Merge branch 'upstream-merge'
[qemu-kvm/markmc.git] / hw / petalogix_s3adsp1800_mmu.c
blob93ce87fc84f944fd49f22426e478c2c6adb9dd13
1 /*
2 * Model of Petalogix linux reference design targeting Xilinx Spartan 3ADSP-1800
3 * boards.
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
23 * THE SOFTWARE.
26 #include "sysbus.h"
27 #include "hw.h"
28 #include "net.h"
29 #include "flash.h"
30 #include "sysemu.h"
31 #include "devices.h"
32 #include "boards.h"
33 #include "device_tree.h"
34 #include "xilinx.h"
35 #include "loader.h"
36 #include "elf.h"
38 #define LMB_BRAM_SIZE (128 * 1024)
39 #define FLASH_SIZE (16 * 1024 * 1024)
41 static uint32_t bootstrap_pc;
43 static void main_cpu_reset(void *opaque)
45 CPUState *env = opaque;
46 cpu_reset(env);
47 env->sregs[SR_PC] = bootstrap_pc;
50 #define BINARY_DEVICE_TREE_FILE "petalogix-s3adsp1800.dtb"
51 static int petalogix_load_device_tree(target_phys_addr_t addr,
52 uint32_t ramsize,
53 target_phys_addr_t initrd_base,
54 target_phys_addr_t initrd_size,
55 const char *kernel_cmdline)
57 char *path;
58 int fdt_size;
59 #ifdef CONFIG_FDT
60 void *fdt;
61 int r;
63 /* Try the local "mb.dtb" override. */
64 fdt = load_device_tree("mb.dtb", &fdt_size);
65 if (!fdt) {
66 path = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE);
67 if (path) {
68 fdt = load_device_tree(path, &fdt_size);
69 qemu_free(path);
71 if (!fdt)
72 return 0;
75 r = qemu_devtree_setprop_string(fdt, "/chosen", "bootargs", kernel_cmdline);
76 if (r < 0)
77 fprintf(stderr, "couldn't set /chosen/bootargs\n");
78 cpu_physical_memory_write (addr, (void *)fdt, fdt_size);
79 #else
80 /* We lack libfdt so we cannot manipulate the fdt. Just pass on the blob
81 to the kernel. */
82 fdt_size = load_image_targphys("mb.dtb", addr, 0x10000);
83 if (fdt_size < 0) {
84 path = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE);
85 if (path) {
86 fdt_size = load_image_targphys(path, addr, 0x10000);
87 qemu_free(path);
91 if (kernel_cmdline) {
92 fprintf(stderr,
93 "Warning: missing libfdt, cannot pass cmdline to kernel!\n");
95 #endif
96 return fdt_size;
99 static void
100 petalogix_s3adsp1800_init(ram_addr_t ram_size,
101 const char *boot_device,
102 const char *kernel_filename,
103 const char *kernel_cmdline,
104 const char *initrd_filename, const char *cpu_model)
106 DeviceState *dev;
107 CPUState *env;
108 int kernel_size;
109 DriveInfo *dinfo;
110 int i;
111 target_phys_addr_t ddr_base = 0x90000000;
112 ram_addr_t phys_lmb_bram;
113 ram_addr_t phys_ram;
114 ram_addr_t phys_flash;
115 qemu_irq irq[32], *cpu_irq;
117 /* init CPUs */
118 if (cpu_model == NULL) {
119 cpu_model = "microblaze";
121 env = cpu_init(cpu_model);
123 env->pvr.regs[10] = 0x0c000000; /* spartan 3a dsp family. */
124 qemu_register_reset(main_cpu_reset, env);
126 /* Attach emulated BRAM through the LMB. */
127 phys_lmb_bram = qemu_ram_alloc(LMB_BRAM_SIZE);
128 cpu_register_physical_memory(0x00000000, LMB_BRAM_SIZE,
129 phys_lmb_bram | IO_MEM_RAM);
131 phys_ram = qemu_ram_alloc(ram_size);
132 cpu_register_physical_memory(ddr_base, ram_size, phys_ram | IO_MEM_RAM);
134 phys_flash = qemu_ram_alloc(FLASH_SIZE);
135 dinfo = drive_get(IF_PFLASH, 0, 0);
136 pflash_cfi02_register(0xa0000000, phys_flash,
137 dinfo ? dinfo->bdrv : NULL, (64 * 1024),
138 FLASH_SIZE >> 16,
139 1, 1, 0x0000, 0x0000, 0x0000, 0x0000,
140 0x555, 0x2aa);
142 cpu_irq = microblaze_pic_init_cpu(env);
143 dev = xilinx_intc_create(0x81800000, cpu_irq[0], 2);
144 for (i = 0; i < 32; i++) {
145 irq[i] = qdev_get_gpio_in(dev, i);
148 sysbus_create_simple("xilinx,uartlite", 0x84000000, irq[3]);
149 /* 2 timers at irq 2 @ 62 Mhz. */
150 xilinx_timer_create(0x83c00000, irq[0], 2, 62 * 1000000);
151 xilinx_ethlite_create(&nd_table[0], 0x81000000, irq[1], 0, 0);
153 if (kernel_filename) {
154 uint64_t entry, low, high;
155 int kcmdline_len;
156 uint32_t base32;
158 /* Boots a kernel elf binary. */
159 kernel_size = load_elf(kernel_filename, 0,
160 &entry, &low, &high,
161 1, ELF_MACHINE, 0);
162 base32 = entry;
163 if (base32 == 0xc0000000) {
164 kernel_size = load_elf(kernel_filename, -0x30000000LL,
165 &entry, NULL, NULL,
166 1, ELF_MACHINE, 0);
168 /* Always boot into physical ram. */
169 bootstrap_pc = ddr_base + (entry & 0x0fffffff);
170 if (kernel_size < 0) {
171 /* If we failed loading ELF's try a raw image. */
172 kernel_size = load_image_targphys(kernel_filename, ddr_base,
173 ram_size);
174 bootstrap_pc = ddr_base;
177 env->regs[5] = ddr_base + kernel_size;
178 if (kernel_cmdline && (kcmdline_len = strlen(kernel_cmdline))) {
179 pstrcpy_targphys("cmdline", env->regs[5], 256, kernel_cmdline);
181 env->regs[6] = 0;
182 /* Provide a device-tree. */
183 env->regs[7] = ddr_base + kernel_size + 256;
184 petalogix_load_device_tree(env->regs[7], ram_size,
185 env->regs[6], 0,
186 kernel_cmdline);
189 env->sregs[SR_PC] = bootstrap_pc;
192 static QEMUMachine petalogix_s3adsp1800_machine = {
193 .name = "petalogix-s3adsp1800",
194 .desc = "Petalogix linux refdesign for xilinx Spartan 3ADSP1800",
195 .init = petalogix_s3adsp1800_init,
196 .is_default = 1
199 static void petalogix_s3adsp1800_machine_init(void)
201 qemu_register_machine(&petalogix_s3adsp1800_machine);
204 machine_init(petalogix_s3adsp1800_machine_init);