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1.1 root 1: /*
2: * Model of Xilinx Virtex5 ML507 PPC-440 refdesign.
3: *
4: * Copyright (c) 2010 Edgar E. Iglesias.
5: *
6: * Permission is hereby granted, free of charge, to any person obtaining a copy
7: * of this software and associated documentation files (the "Software"), to deal
8: * in the Software without restriction, including without limitation the rights
9: * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10: * copies of the Software, and to permit persons to whom the Software is
11: * furnished to do so, subject to the following conditions:
12: *
13: * The above copyright notice and this permission notice shall be included in
14: * all copies or substantial portions of the Software.
15: *
16: * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17: * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18: * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19: * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20: * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21: * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22: * THE SOFTWARE.
23: */
24:
25: #include "sysbus.h"
26: #include "hw.h"
27: #include "pc.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 "loader.h"
35: #include "elf.h"
36: #include "qemu-log.h"
1.1.1.3 ! root 37: #include "exec-memory.h"
1.1 root 38:
39: #include "ppc.h"
40: #include "ppc4xx.h"
41: #include "ppc440.h"
42: #include "ppc405.h"
43:
44: #include "blockdev.h"
45: #include "xilinx.h"
46:
47: #define EPAPR_MAGIC (0x45504150)
48: #define FLASH_SIZE (16 * 1024 * 1024)
49:
50: static struct boot_info
51: {
52: uint32_t bootstrap_pc;
53: uint32_t cmdline;
54: uint32_t fdt;
55: uint32_t ima_size;
56: void *vfdt;
57: } boot_info;
58:
59: /* Create reset TLB entries for BookE, spanning the 32bit addr space. */
60: static void mmubooke_create_initial_mapping(CPUState *env,
61: target_ulong va,
62: target_phys_addr_t pa)
63: {
1.1.1.2 root 64: ppcemb_tlb_t *tlb = &env->tlb.tlbe[0];
1.1 root 65:
66: tlb->attr = 0;
67: tlb->prot = PAGE_VALID | ((PAGE_READ | PAGE_WRITE | PAGE_EXEC) << 4);
68: tlb->size = 1 << 31; /* up to 0x80000000 */
69: tlb->EPN = va & TARGET_PAGE_MASK;
70: tlb->RPN = pa & TARGET_PAGE_MASK;
71: tlb->PID = 0;
72:
1.1.1.2 root 73: tlb = &env->tlb.tlbe[1];
1.1 root 74: tlb->attr = 0;
75: tlb->prot = PAGE_VALID | ((PAGE_READ | PAGE_WRITE | PAGE_EXEC) << 4);
76: tlb->size = 1 << 31; /* up to 0xffffffff */
77: tlb->EPN = 0x80000000 & TARGET_PAGE_MASK;
78: tlb->RPN = 0x80000000 & TARGET_PAGE_MASK;
79: tlb->PID = 0;
80: }
81:
82: static CPUState *ppc440_init_xilinx(ram_addr_t *ram_size,
83: int do_init,
84: const char *cpu_model,
85: uint32_t sysclk)
86: {
87: CPUState *env;
88: qemu_irq *irqs;
89:
90: env = cpu_init(cpu_model);
91: if (!env) {
92: fprintf(stderr, "Unable to initialize CPU!\n");
93: exit(1);
94: }
95:
1.1.1.3 ! root 96: ppc_booke_timers_init(env, sysclk, 0/* no flags */);
1.1 root 97:
98: ppc_dcr_init(env, NULL, NULL);
99:
100: /* interrupt controller */
1.1.1.3 ! root 101: irqs = g_malloc0(sizeof(qemu_irq) * PPCUIC_OUTPUT_NB);
1.1 root 102: irqs[PPCUIC_OUTPUT_INT] = ((qemu_irq *)env->irq_inputs)[PPC40x_INPUT_INT];
103: irqs[PPCUIC_OUTPUT_CINT] = ((qemu_irq *)env->irq_inputs)[PPC40x_INPUT_CINT];
104: ppcuic_init(env, irqs, 0x0C0, 0, 1);
105: return env;
106: }
107:
108: static void main_cpu_reset(void *opaque)
109: {
110: CPUState *env = opaque;
111: struct boot_info *bi = env->load_info;
112:
113: cpu_reset(env);
114: /* Linux Kernel Parameters (passing device tree):
115: * r3: pointer to the fdt
116: * r4: 0
117: * r5: 0
118: * r6: epapr magic
119: * r7: size of IMA in bytes
120: * r8: 0
121: * r9: 0
122: */
123: env->gpr[1] = (16<<20) - 8;
124: /* Provide a device-tree. */
125: env->gpr[3] = bi->fdt;
126: env->nip = bi->bootstrap_pc;
127:
128: /* Create a mapping for the kernel. */
129: mmubooke_create_initial_mapping(env, 0, 0);
130: env->gpr[6] = tswap32(EPAPR_MAGIC);
131: env->gpr[7] = bi->ima_size;
132: }
133:
134: #define BINARY_DEVICE_TREE_FILE "virtex-ml507.dtb"
135: static int xilinx_load_device_tree(target_phys_addr_t addr,
136: uint32_t ramsize,
137: target_phys_addr_t initrd_base,
138: target_phys_addr_t initrd_size,
139: const char *kernel_cmdline)
140: {
141: char *path;
142: int fdt_size;
143: #ifdef CONFIG_FDT
144: void *fdt;
145: int r;
146:
147: /* Try the local "ppc.dtb" override. */
148: fdt = load_device_tree("ppc.dtb", &fdt_size);
149: if (!fdt) {
150: path = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE);
151: if (path) {
152: fdt = load_device_tree(path, &fdt_size);
1.1.1.3 ! root 153: g_free(path);
1.1 root 154: }
155: if (!fdt) {
156: return 0;
157: }
158: }
159:
160: r = qemu_devtree_setprop_string(fdt, "/chosen", "bootargs", kernel_cmdline);
161: if (r < 0)
162: fprintf(stderr, "couldn't set /chosen/bootargs\n");
163: cpu_physical_memory_write (addr, (void *)fdt, fdt_size);
164: #else
165: /* We lack libfdt so we cannot manipulate the fdt. Just pass on the blob
166: to the kernel. */
167: fdt_size = load_image_targphys("ppc.dtb", addr, 0x10000);
168: if (fdt_size < 0) {
169: path = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE);
170: if (path) {
171: fdt_size = load_image_targphys(path, addr, 0x10000);
1.1.1.3 ! root 172: g_free(path);
1.1 root 173: }
174: }
175:
176: if (kernel_cmdline) {
177: fprintf(stderr,
178: "Warning: missing libfdt, cannot pass cmdline to kernel!\n");
179: }
180: #endif
181: return fdt_size;
182: }
183:
184: static void virtex_init(ram_addr_t ram_size,
185: const char *boot_device,
186: const char *kernel_filename,
187: const char *kernel_cmdline,
188: const char *initrd_filename, const char *cpu_model)
189: {
1.1.1.3 ! root 190: MemoryRegion *address_space_mem = get_system_memory();
1.1 root 191: DeviceState *dev;
192: CPUState *env;
193: target_phys_addr_t ram_base = 0;
194: DriveInfo *dinfo;
195: ram_addr_t phys_ram;
196: qemu_irq irq[32], *cpu_irq;
197: int kernel_size;
198: int i;
199:
200: /* init CPUs */
201: if (cpu_model == NULL) {
202: cpu_model = "440-Xilinx";
203: }
204:
1.1.1.3 ! root 205: env = ppc440_init_xilinx(&ram_size, 1, cpu_model, 400000000);
1.1 root 206: qemu_register_reset(main_cpu_reset, env);
207:
208: phys_ram = qemu_ram_alloc(NULL, "ram", ram_size);
209: cpu_register_physical_memory(ram_base, ram_size, phys_ram | IO_MEM_RAM);
210:
211: dinfo = drive_get(IF_PFLASH, 0, 0);
1.1.1.3 ! root 212: pflash_cfi01_register(0xfc000000, NULL, "virtex.flash", FLASH_SIZE,
1.1 root 213: dinfo ? dinfo->bdrv : NULL, (64 * 1024),
214: FLASH_SIZE >> 16,
215: 1, 0x89, 0x18, 0x0000, 0x0, 1);
216:
217: cpu_irq = (qemu_irq *) &env->irq_inputs[PPC40x_INPUT_INT];
218: dev = xilinx_intc_create(0x81800000, cpu_irq[0], 0);
219: for (i = 0; i < 32; i++) {
220: irq[i] = qdev_get_gpio_in(dev, i);
221: }
222:
1.1.1.3 ! root 223: serial_mm_init(address_space_mem, 0x83e01003ULL, 2, irq[9], 115200,
! 224: serial_hds[0], DEVICE_LITTLE_ENDIAN);
1.1 root 225:
226: /* 2 timers at irq 2 @ 62 Mhz. */
227: xilinx_timer_create(0x83c00000, irq[3], 2, 62 * 1000000);
228:
229: if (kernel_filename) {
230: uint64_t entry, low, high;
231: target_phys_addr_t boot_offset;
232:
233: /* Boots a kernel elf binary. */
234: kernel_size = load_elf(kernel_filename, NULL, NULL,
235: &entry, &low, &high, 1, ELF_MACHINE, 0);
236: boot_info.bootstrap_pc = entry & 0x00ffffff;
237:
238: if (kernel_size < 0) {
239: boot_offset = 0x1200000;
240: /* If we failed loading ELF's try a raw image. */
241: kernel_size = load_image_targphys(kernel_filename,
242: boot_offset,
243: ram_size);
244: boot_info.bootstrap_pc = boot_offset;
245: high = boot_info.bootstrap_pc + kernel_size + 8192;
246: }
247:
248: boot_info.ima_size = kernel_size;
249:
250: /* Provide a device-tree. */
251: boot_info.fdt = high + (8192 * 2);
252: boot_info.fdt &= ~8191;
253: xilinx_load_device_tree(boot_info.fdt, ram_size, 0, 0, kernel_cmdline);
254: }
255: env->load_info = &boot_info;
256: }
257:
258: static QEMUMachine virtex_machine = {
259: .name = "virtex-ml507",
260: .desc = "Xilinx Virtex ML507 reference design",
261: .init = virtex_init,
262: };
263:
264: static void virtex_machine_init(void)
265: {
266: qemu_register_machine(&virtex_machine);
267: }
268:
269: machine_init(virtex_machine_init);
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