r2d.c
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/*
* Renesas SH7751R R2D-PLUS emulation
*
* Copyright (c) 2007 Magnus Damm
* Copyright (c) 2008 Paul Mundt
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "hw.h"
#include "sh.h"
#include "sysemu.h"
#include "boards.h"
#define SDRAM_BASE 0x0c000000 /* Physical location of SDRAM: Area 3 */
#define SDRAM_SIZE 0x04000000
#define PA_POWOFF 0x30
#define PA_VERREG 0x32
#define PA_OUTPORT 0x36
typedef struct {
target_phys_addr_t base;
uint16_t bcr;
uint16_t irlmon;
uint16_t cfctl;
uint16_t cfpow;
uint16_t dispctl;
uint16_t sdmpow;
uint16_t rtcce;
uint16_t pcicd;
uint16_t voyagerrts;
uint16_t cfrst;
uint16_t admrts;
uint16_t extrst;
uint16_t cfcdintclr;
uint16_t keyctlclr;
uint16_t pad0;
uint16_t pad1;
uint16_t powoff;
uint16_t verreg;
uint16_t inport;
uint16_t outport;
uint16_t bverreg;
} r2d_fpga_t;
static uint32_t r2d_fpga_read(void *opaque, target_phys_addr_t addr)
{
r2d_fpga_t *s = opaque;
addr -= s->base;
switch (addr) {
case PA_OUTPORT:
return s->outport;
case PA_POWOFF:
return s->powoff;
case PA_VERREG:
return 0x10;
}
return 0;
}
static void
r2d_fpga_write(void *opaque, target_phys_addr_t addr, uint32_t value)
{
r2d_fpga_t *s = opaque;
addr -= s->base;
switch (addr) {
case PA_OUTPORT:
s->outport = value;
break;
case PA_POWOFF:
s->powoff = value;
break;
case PA_VERREG:
/* Discard writes */
break;
}
}
static CPUReadMemoryFunc *r2d_fpga_readfn[] = {
r2d_fpga_read,
r2d_fpga_read,
NULL,
};
static CPUWriteMemoryFunc *r2d_fpga_writefn[] = {
r2d_fpga_write,
r2d_fpga_write,
NULL,
};
static void r2d_fpga_init(target_phys_addr_t base)
{
int iomemtype;
r2d_fpga_t *s;
s = qemu_mallocz(sizeof(r2d_fpga_t));
if (!s)
return;
s->base = base;
iomemtype = cpu_register_io_memory(0, r2d_fpga_readfn,
r2d_fpga_writefn, s);
cpu_register_physical_memory(base, 0x40, iomemtype);
}
static void r2d_init(ram_addr_t ram_size, int vga_ram_size,
const char *boot_device, DisplayState * ds,
const char *kernel_filename, const char *kernel_cmdline,
const char *initrd_filename, const char *cpu_model)
{
CPUState *env;
struct SH7750State *s;
if (!cpu_model)
cpu_model = "SH7751R";
env = cpu_init(cpu_model);
if (!env) {
fprintf(stderr, "Unable to find CPU definition\n");
exit(1);
}
/* Allocate memory space */
cpu_register_physical_memory(SDRAM_BASE, SDRAM_SIZE, 0);
/* Register peripherals */
r2d_fpga_init(0x04000000);
s = sh7750_init(env);
/* Todo: register on board registers */
{
int kernel_size;
kernel_size = load_image(kernel_filename, phys_ram_base);
if (kernel_size < 0) {
fprintf(stderr, "qemu: could not load kernel '%s'\n", kernel_filename);
exit(1);
}
env->pc = SDRAM_BASE | 0xa0000000; /* Start from P2 area */
}
}
QEMUMachine r2d_machine = {
"r2d",
"r2d-plus board",
r2d_init,
SDRAM_SIZE | RAMSIZE_FIXED
};