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"
40 #define FLASH_BASE 0x00000000
41 #define FLASH_SIZE 0x02000000
43 #define SDRAM_BASE 0x0c000000 /* Physical location of SDRAM: Area 3 */
44 #define SDRAM_SIZE 0x04000000
46 #define SM501_VRAM_SIZE 0x800000
48 #define BOOT_PARAMS_OFFSET 0x0010000
49 /* CONFIG_BOOT_LINK_OFFSET of Linux kernel */
50 #define LINUX_LOAD_OFFSET 0x0800000
51 #define INITRD_LOAD_OFFSET 0x1800000
53 #define PA_IRLMSK 0x00
54 #define PA_POWOFF 0x30
55 #define PA_VERREG 0x32
56 #define PA_OUTPORT 0x36
86 PCI_INTD
, CF_IDE
, CF_CD
, PCI_INTC
, SM501
, KEY
, RTC_A
, RTC_T
,
87 SDCARD
, PCI_INTA
, PCI_INTB
, EXT
, TP
,
91 static const struct { short irl
; uint16_t msk
; } irqtab
[NR_IRQS
] = {
92 [CF_IDE
] = { 1, 1<<9 },
93 [CF_CD
] = { 2, 1<<8 },
94 [PCI_INTA
] = { 9, 1<<14 },
95 [PCI_INTB
] = { 10, 1<<13 },
96 [PCI_INTC
] = { 3, 1<<12 },
97 [PCI_INTD
] = { 0, 1<<11 },
98 [SM501
] = { 4, 1<<10 },
100 [RTC_A
] = { 6, 1<<5 },
101 [RTC_T
] = { 7, 1<<4 },
102 [SDCARD
] = { 8, 1<<7 },
103 [EXT
] = { 11, 1<<0 },
104 [TP
] = { 12, 1<<15 },
107 static void update_irl(r2d_fpga_t
*fpga
)
110 for (i
= 0; i
< NR_IRQS
; i
++)
111 if (fpga
->irlmon
& fpga
->irlmsk
& irqtab
[i
].msk
)
112 if (irqtab
[i
].irl
< irl
)
114 qemu_set_irq(fpga
->irl
, irl
^ 15);
117 static void r2d_fpga_irq_set(void *opaque
, int n
, int level
)
119 r2d_fpga_t
*fpga
= opaque
;
121 fpga
->irlmon
|= irqtab
[n
].msk
;
123 fpga
->irlmon
&= ~irqtab
[n
].msk
;
127 static uint32_t r2d_fpga_read(void *opaque
, target_phys_addr_t addr
)
129 r2d_fpga_t
*s
= opaque
;
146 r2d_fpga_write(void *opaque
, target_phys_addr_t addr
, uint32_t value
)
148 r2d_fpga_t
*s
= opaque
;
160 qemu_system_shutdown_request();
169 static CPUReadMemoryFunc
* const r2d_fpga_readfn
[] = {
175 static CPUWriteMemoryFunc
* const r2d_fpga_writefn
[] = {
181 static qemu_irq
*r2d_fpga_init(target_phys_addr_t base
, qemu_irq irl
)
186 s
= qemu_mallocz(sizeof(r2d_fpga_t
));
190 iomemtype
= cpu_register_io_memory(r2d_fpga_readfn
,
191 r2d_fpga_writefn
, s
);
192 cpu_register_physical_memory(base
, 0x40, iomemtype
);
193 return qemu_allocate_irqs(r2d_fpga_irq_set
, s
, NR_IRQS
);
196 static void r2d_pci_set_irq(void *opaque
, int n
, int l
)
198 qemu_irq
*p
= opaque
;
200 qemu_set_irq(p
[n
], l
);
203 static int r2d_pci_map_irq(PCIDevice
*d
, int irq_num
)
205 const int intx
[] = { PCI_INTA
, PCI_INTB
, PCI_INTC
, PCI_INTD
};
206 return intx
[d
->devfn
>> 3];
209 static struct __attribute__((__packed__
))
211 int mount_root_rdonly
;
220 char kernel_cmdline
[256];
223 static void r2d_init(ram_addr_t ram_size
,
224 const char *boot_device
,
225 const char *kernel_filename
, const char *kernel_cmdline
,
226 const char *initrd_filename
, const char *cpu_model
)
229 struct SH7750State
*s
;
230 ram_addr_t sdram_addr
;
236 cpu_model
= "SH7751R";
238 env
= cpu_init(cpu_model
);
240 fprintf(stderr
, "Unable to find CPU definition\n");
244 /* Allocate memory space */
245 sdram_addr
= qemu_ram_alloc(SDRAM_SIZE
);
246 cpu_register_physical_memory(SDRAM_BASE
, SDRAM_SIZE
, sdram_addr
);
247 /* Register peripherals */
248 s
= sh7750_init(env
);
249 irq
= r2d_fpga_init(0x04000000, sh7750_irl(s
));
250 sh_pci_register_bus(r2d_pci_set_irq
, r2d_pci_map_irq
, irq
, 0, 4);
252 sm501_init(0x10000000, SM501_VRAM_SIZE
, irq
[SM501
], serial_hds
[2]);
254 /* onboard CF (True IDE mode, Master only). */
255 dinfo
= drive_get(IF_IDE
, 0, 0);
256 mmio_ide_init(0x14001000, 0x1400080c, irq
[CF_IDE
], 1,
259 /* onboard flash memory */
260 pflash_cfi02_register(0x0, qemu_ram_alloc(FLASH_SIZE
),
261 dinfo
? dinfo
->bdrv
: NULL
, (16 * 1024),
263 1, 4, 0x0000, 0x0000, 0x0000, 0x0000,
266 /* NIC: rtl8139 on-board, and 2 slots. */
267 for (i
= 0; i
< nb_nics
; i
++)
268 pci_nic_init_nofail(&nd_table
[i
], "rtl8139", i
==0 ? "2" : NULL
);
271 usbdevice_create("keyboard");
273 /* Todo: register on board registers */
274 memset(&boot_params
, 0, sizeof(boot_params
));
276 if (kernel_filename
) {
279 kernel_size
= load_image_targphys(kernel_filename
,
280 SDRAM_BASE
+ LINUX_LOAD_OFFSET
,
281 INITRD_LOAD_OFFSET
- LINUX_LOAD_OFFSET
);
282 if (kernel_size
< 0) {
283 fprintf(stderr
, "qemu: could not load kernel '%s'\n", kernel_filename
);
287 /* initialization which should be done by firmware */
288 stl_phys(SH7750_BCR1
, 1<<3); /* cs3 SDRAM */
289 stw_phys(SH7750_BCR2
, 3<<(3*2)); /* cs3 32bit */
290 env
->pc
= (SDRAM_BASE
+ LINUX_LOAD_OFFSET
) | 0xa0000000; /* Start from P2 area */
293 if (initrd_filename
) {
296 initrd_size
= load_image_targphys(initrd_filename
,
297 SDRAM_BASE
+ INITRD_LOAD_OFFSET
,
298 SDRAM_SIZE
- INITRD_LOAD_OFFSET
);
300 if (initrd_size
< 0) {
301 fprintf(stderr
, "qemu: could not load initrd '%s'\n", initrd_filename
);
305 /* initialization which should be done by firmware */
306 boot_params
.loader_type
= 1;
307 boot_params
.initrd_start
= INITRD_LOAD_OFFSET
;
308 boot_params
.initrd_size
= initrd_size
;
311 if (kernel_cmdline
) {
312 strncpy(boot_params
.kernel_cmdline
, kernel_cmdline
,
313 sizeof(boot_params
.kernel_cmdline
));
316 rom_add_blob_fixed("boot_params", &boot_params
, sizeof(boot_params
),
317 SDRAM_BASE
+ BOOT_PARAMS_OFFSET
);
320 static QEMUMachine r2d_machine
= {
322 .desc
= "r2d-plus board",
326 static void r2d_machine_init(void)
328 qemu_register_machine(&r2d_machine
);
331 machine_init(r2d_machine_init
);