2 * Renesas SH7751R R2D-PLUS emulation
4 * Copyright (c) 2007 Magnus Damm
5 * Copyright (c) 2008 Paul Mundt
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
34 #include "sh7750_regs.h"
41 #define FLASH_BASE 0x00000000
42 #define FLASH_SIZE 0x02000000
44 #define SDRAM_BASE 0x0c000000 /* Physical location of SDRAM: Area 3 */
45 #define SDRAM_SIZE 0x04000000
47 #define SM501_VRAM_SIZE 0x800000
49 #define BOOT_PARAMS_OFFSET 0x0010000
50 /* CONFIG_BOOT_LINK_OFFSET of Linux kernel */
51 #define LINUX_LOAD_OFFSET 0x0800000
52 #define INITRD_LOAD_OFFSET 0x1800000
54 #define PA_IRLMSK 0x00
55 #define PA_POWOFF 0x30
56 #define PA_VERREG 0x32
57 #define PA_OUTPORT 0x36
87 PCI_INTD, CF_IDE, CF_CD, PCI_INTC, SM501, KEY, RTC_A, RTC_T,
88 SDCARD, PCI_INTA, PCI_INTB, EXT, TP,
92 static const struct { short irl; uint16_t msk; } irqtab[NR_IRQS] = {
93 [CF_IDE] = { 1, 1<<9 },
94 [CF_CD] = { 2, 1<<8 },
95 [PCI_INTA] = { 9, 1<<14 },
96 [PCI_INTB] = { 10, 1<<13 },
97 [PCI_INTC] = { 3, 1<<12 },
98 [PCI_INTD] = { 0, 1<<11 },
99 [SM501] = { 4, 1<<10 },
101 [RTC_A] = { 6, 1<<5 },
102 [RTC_T] = { 7, 1<<4 },
103 [SDCARD] = { 8, 1<<7 },
104 [EXT] = { 11, 1<<0 },
105 [TP] = { 12, 1<<15 },
108 static void update_irl(r2d_fpga_t *fpga)
111 for (i = 0; i < NR_IRQS; i++)
112 if (fpga->irlmon & fpga->irlmsk & irqtab[i].msk)
113 if (irqtab[i].irl < irl)
115 qemu_set_irq(fpga->irl, irl ^ 15);
118 static void r2d_fpga_irq_set(void *opaque, int n, int level)
120 r2d_fpga_t *fpga = opaque;
122 fpga->irlmon |= irqtab[n].msk;
124 fpga->irlmon &= ~irqtab[n].msk;
128 static uint32_t r2d_fpga_read(void *opaque, target_phys_addr_t addr)
130 r2d_fpga_t *s = opaque;
147 r2d_fpga_write(void *opaque, target_phys_addr_t addr, uint32_t value)
149 r2d_fpga_t *s = opaque;
161 qemu_system_shutdown_request();
170 static CPUReadMemoryFunc * const r2d_fpga_readfn[] = {
176 static CPUWriteMemoryFunc * const r2d_fpga_writefn[] = {
182 static qemu_irq *r2d_fpga_init(target_phys_addr_t base, qemu_irq irl)
187 s = qemu_mallocz(sizeof(r2d_fpga_t));
191 iomemtype = cpu_register_io_memory(r2d_fpga_readfn,
193 DEVICE_NATIVE_ENDIAN);
194 cpu_register_physical_memory(base, 0x40, iomemtype);
195 return qemu_allocate_irqs(r2d_fpga_irq_set, s, NR_IRQS);
198 static void r2d_pci_set_irq(void *opaque, int n, int l)
200 qemu_irq *p = opaque;
202 qemu_set_irq(p[n], l);
205 static int r2d_pci_map_irq(PCIDevice *d, int irq_num)
207 const int intx[] = { PCI_INTA, PCI_INTB, PCI_INTC, PCI_INTD };
208 return intx[d->devfn >> 3];
211 typedef struct ResetData {
216 static void main_cpu_reset(void *opaque)
218 ResetData *s = (ResetData *)opaque;
219 CPUState *env = s->env;
225 static struct __attribute__((__packed__))
227 int mount_root_rdonly;
236 char kernel_cmdline[256];
239 static void r2d_init(ram_addr_t ram_size,
240 const char *boot_device,
241 const char *kernel_filename, const char *kernel_cmdline,
242 const char *initrd_filename, const char *cpu_model)
245 ResetData *reset_info;
246 struct SH7750State *s;
247 ram_addr_t sdram_addr;
253 cpu_model = "SH7751R";
255 env = cpu_init(cpu_model);
257 fprintf(stderr, "Unable to find CPU definition\n");
260 reset_info = qemu_mallocz(sizeof(ResetData));
261 reset_info->env = env;
262 reset_info->vector = env->pc;
263 qemu_register_reset(main_cpu_reset, reset_info);
265 /* Allocate memory space */
266 sdram_addr = qemu_ram_alloc(NULL, "r2d.sdram", SDRAM_SIZE);
267 cpu_register_physical_memory(SDRAM_BASE, SDRAM_SIZE, sdram_addr);
268 /* Register peripherals */
269 s = sh7750_init(env);
270 irq = r2d_fpga_init(0x04000000, sh7750_irl(s));
271 sh_pci_register_bus(r2d_pci_set_irq, r2d_pci_map_irq, irq, 0, 4);
273 sm501_init(0x10000000, SM501_VRAM_SIZE, irq[SM501], serial_hds[2]);
275 /* onboard CF (True IDE mode, Master only). */
276 dinfo = drive_get(IF_IDE, 0, 0);
277 mmio_ide_init(0x14001000, 0x1400080c, irq[CF_IDE], 1,
280 /* onboard flash memory */
281 dinfo = drive_get(IF_PFLASH, 0, 0);
282 pflash_cfi02_register(0x0, qemu_ram_alloc(NULL, "r2d.flash", FLASH_SIZE),
283 dinfo ? dinfo->bdrv : NULL, (16 * 1024),
285 1, 4, 0x0000, 0x0000, 0x0000, 0x0000,
288 /* NIC: rtl8139 on-board, and 2 slots. */
289 for (i = 0; i < nb_nics; i++)
290 pci_nic_init_nofail(&nd_table[i], "rtl8139", i==0 ? "2" : NULL);
293 usbdevice_create("keyboard");
295 /* Todo: register on board registers */
296 memset(&boot_params, 0, sizeof(boot_params));
298 if (kernel_filename) {
301 kernel_size = load_image_targphys(kernel_filename,
302 SDRAM_BASE + LINUX_LOAD_OFFSET,
303 INITRD_LOAD_OFFSET - LINUX_LOAD_OFFSET);
304 if (kernel_size < 0) {
305 fprintf(stderr, "qemu: could not load kernel '%s'\n", kernel_filename);
309 /* initialization which should be done by firmware */
310 stl_phys(SH7750_BCR1, 1<<3); /* cs3 SDRAM */
311 stw_phys(SH7750_BCR2, 3<<(3*2)); /* cs3 32bit */
312 reset_info->vector = (SDRAM_BASE + LINUX_LOAD_OFFSET) | 0xa0000000; /* Start from P2 area */
315 if (initrd_filename) {
318 initrd_size = load_image_targphys(initrd_filename,
319 SDRAM_BASE + INITRD_LOAD_OFFSET,
320 SDRAM_SIZE - INITRD_LOAD_OFFSET);
322 if (initrd_size < 0) {
323 fprintf(stderr, "qemu: could not load initrd '%s'\n", initrd_filename);
327 /* initialization which should be done by firmware */
328 boot_params.loader_type = 1;
329 boot_params.initrd_start = INITRD_LOAD_OFFSET;
330 boot_params.initrd_size = initrd_size;
333 if (kernel_cmdline) {
334 strncpy(boot_params.kernel_cmdline, kernel_cmdline,
335 sizeof(boot_params.kernel_cmdline));
338 rom_add_blob_fixed("boot_params", &boot_params, sizeof(boot_params),
339 SDRAM_BASE + BOOT_PARAMS_OFFSET);
342 static QEMUMachine r2d_machine = {
344 .desc = "r2d-plus board",
348 static void r2d_machine_init(void)
350 qemu_register_machine(&r2d_machine);
353 machine_init(r2d_machine_init);