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/*
* $Id: chip_st_M27C512.c,v 1.13 2009-08-03 06:49:41 vrsieh Exp $
*
* Copyright (C) 2003-2009 FAUmachine Team <info@faumachine.org>.
* This program is free software. You can redistribute it and/or modify it
* under the terms of the GNU General Public License, either version 2 of
* the License, or (at your option) any later version. See COPYING.
*/
#include "config.h"
#define SZ_BIOS_ROM (64 * 1024) /* ROM size */
#include <assert.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "fixme.h"
#include "glue-main.h"
#include "glue-shm.h"
#include "umutil.h"
#include "chip_st_M27C512.h"
#define CHIP_(x) chip_st_M27C512_ ## x
#define CHIP "chip_st_M27C512"
struct cpssp {
unsigned int state_power;
uint32_t *haddr;
};
static void *
CHIP_(access)(struct cpssp *cpssp, unsigned long pa)
{
assert(/* 0 <= pa && */ pa < SZ_BIOS_ROM);
pa &= 0xfffff000;
return (unsigned char *) cpssp->haddr + pa;
}
static int
CHIP_(readb)(void *_css, uint8_t *valp, unsigned long addr)
{
struct cpssp *cpssp = (struct cpssp *) _css;
uint8_t *va;
addr &= SZ_BIOS_ROM - 1;
assert(/* 0 <= pa && */ addr < SZ_BIOS_ROM);
/*
* Read Contents
*/
va = CHIP_(access)(cpssp, addr & 0xfffff000);
*valp = *(va + (addr & 0x00000fff));
return 0;
}
static int
CHIP_(writeb)(void *_css, uint8_t val, unsigned long addr)
{
// struct cpssp *cpssp = (struct cpssp *) _css;
return 0;
}
static int
CHIP_(map)(
void *_css,
unsigned long addr,
char **haddr_mr_p,
char **haddr_mw_p
)
{
struct cpssp *cpssp = (struct cpssp *) _css;
addr &= SZ_BIOS_ROM - 1;
assert(/* 0 <= addr && */ addr < SZ_BIOS_ROM);
*haddr_mr_p =
*haddr_mw_p = (char *) cpssp->haddr + addr;
return 0;
}
static void
CHIP_(power_set)(void *_cpssp, unsigned int val)
{
struct cpssp *cpssp = (struct cpssp *) _cpssp;
cpssp->state_power = val;
/* FIXME */
}
void *
CHIP_(create)(
const char *name,
const char *img,
struct sig_manage *port_manage,
struct sig_boolean *port_power,
struct sig_cs *port_cs,
struct sig_isa_bus_main *port_bus
)
{
static const struct sig_boolean_funcs power_funcs = {
.set = CHIP_(power_set),
};
static const struct sig_cs_funcs cs_funcs = {
.readb = CHIP_(readb),
.writeb = CHIP_(writeb),
.map = CHIP_(map),
};
struct cpssp *cpssp;
const char *path;
int fd;
int ret;
cpssp = malloc(sizeof(*cpssp));
assert(cpssp);
cpssp->haddr = shm_alloc(SZ_BIOS_ROM, SHM_PAGE_ALIGNED);
assert(cpssp->haddr);
path = buildpath(ROMDIR, img);
fd = open(path, O_RDONLY);
assert(0 <= fd);
ret = read(fd, cpssp->haddr, SZ_BIOS_ROM);
if (ret < SZ_BIOS_ROM) {
fprintf(stderr, "WARNING: %s: %s: too small.\n",
CHIP, img);
} else {
char c;
ret = read(fd, &c, 1);
if (0 < ret) {
fprintf(stderr, "WARNING: %s: %s: too big.\n",
CHIP, img);
}
}
ret = close(fd);
assert(0 <= ret);
/* Out */
/* Call */
sig_cs_connect(port_cs, cpssp, &cs_funcs);
/* In */
cpssp->state_power = 0;
sig_boolean_connect_in(port_power, cpssp, &power_funcs);
return cpssp;
}
void
CHIP_(destroy)(void *_cpssp)
{
struct cpssp *cpssp = _cpssp;
shm_free(cpssp->haddr, SZ_BIOS_ROM);
free(cpssp);
}
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