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-rw-r--r--sim/ppc/hw_nvram.c234
1 files changed, 0 insertions, 234 deletions
diff --git a/sim/ppc/hw_nvram.c b/sim/ppc/hw_nvram.c
deleted file mode 100644
index fbd8e11..0000000
--- a/sim/ppc/hw_nvram.c
+++ /dev/null
@@ -1,234 +0,0 @@
-/* This file is part of the program psim.
-
- Copyright (C) 1994-1996, Andrew Cagney <cagney@highland.com.au>
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
- */
-
-
-#ifndef _HW_NVRAM_C_
-#define _HW_NVRAM_C_
-
-#ifndef STATIC_INLINE_HW_NVRAM
-#define STATIC_INLINE_HW_NVRAM STATIC_INLINE
-#endif
-
-#include "device_table.h"
-
-#ifdef HAVE_TIME_H
-#include <time.h>
-#endif
-
-#ifdef HAVE_STRING_H
-#include <string.h>
-#else
-#ifdef HAVE_STRINGS_H
-#include <strings.h>
-#endif
-#endif
-
-/* NVRAM - non-volatile memory with optional clock.
-
- Description:
-
- This device implements a small byte addressable non-volatile memory
- component. The component may include an optional real-time clock
- at its upper addresses.
-
- Properties:
-
- reg = <address> <size>. Determine where the device lives in the
- parents address space.
-
- timezone = <integer>. Adjustment to current host's GMT (in secons)
- that should be applied when updating the NVRAM's clock. */
-
-typedef struct _hw_nvram_device {
- unsigned8 *memory;
- unsigned sizeof_memory;
-#ifdef HAVE_TIME_H
- time_t host_time;
-#else
- long host_time;
-#endif
- unsigned timezone;
- /* useful */
- unsigned addr_year;
- unsigned addr_month;
- unsigned addr_date;
- unsigned addr_day;
- unsigned addr_hour;
- unsigned addr_minutes;
- unsigned addr_seconds;
- unsigned addr_control;
-} hw_nvram_device;
-
-static void *
-hw_nvram_create(const char *name,
- const device_unit *unit_address,
- const char *args,
- device *parent)
-{
- hw_nvram_device *hw_nvram = ZALLOC(hw_nvram_device);
- return hw_nvram;
-}
-
-typedef struct _hw_nvram_reg_spec {
- unsigned32 base;
- unsigned32 size;
-} hw_nvram_reg_spec;
-
-static void
-hw_nvram_init_address(device *me)
-{
- hw_nvram_device *hw_nvram = (hw_nvram_device*)device_data(me);
- const device_property *reg = device_find_array_property(me, "reg");
- const hw_nvram_reg_spec *spec = reg->array;
- int nr_entries = reg->sizeof_array / sizeof(*spec);
-
- if ((reg->sizeof_array % sizeof(*spec)) != 0)
- error("devices/%s reg property of incorrect size\n", device_name(me));
- if (nr_entries > 1)
- error("devices/%s reg property contains multiple specs\n",
- device_name(me));
-
- /* initialize the hw_nvram */
- if (hw_nvram->memory == NULL) {
- hw_nvram->sizeof_memory = BE2H_4(spec->size);
- hw_nvram->memory = zalloc(hw_nvram->sizeof_memory);
- }
- else
- memset(hw_nvram->memory, hw_nvram->sizeof_memory, 0);
-
- hw_nvram->timezone = device_find_integer_property(me, "timezone");
-
- hw_nvram->addr_year = hw_nvram->sizeof_memory - 1;
- hw_nvram->addr_month = hw_nvram->sizeof_memory - 2;
- hw_nvram->addr_date = hw_nvram->sizeof_memory - 3;
- hw_nvram->addr_day = hw_nvram->sizeof_memory - 4;
- hw_nvram->addr_hour = hw_nvram->sizeof_memory - 5;
- hw_nvram->addr_minutes = hw_nvram->sizeof_memory - 6;
- hw_nvram->addr_seconds = hw_nvram->sizeof_memory - 7;
- hw_nvram->addr_control = hw_nvram->sizeof_memory - 8;
-
- device_attach_address(device_parent(me),
- device_name(me),
- attach_callback,
- 0 /*address space*/,
- BE2H_4(spec->base),
- hw_nvram->sizeof_memory,
- access_read_write_exec,
- me);
-}
-
-static int
-hw_nvram_bcd(int val)
-{
- return ((val / 10) << 4) + (val % 10);
-}
-
-/* If reached an update interval and allowed, update the clock within
- the hw_nvram. While this function could be implemented using events
- it isn't on the assumption that the HW_NVRAM will hardly ever be
- referenced and hence there is little need in keeping the clock
- continually up-to-date */
-static void
-hw_nvram_update_clock(hw_nvram_device *hw_nvram, cpu *processor)
-{
-#ifdef HAVE_TIME_H
- if (!(hw_nvram->memory[hw_nvram->addr_control] & 0xc0)) {
- time_t host_time = time(NULL);
- if (hw_nvram->host_time != host_time) {
- time_t nvtime = hw_nvram->host_time + hw_nvram->timezone;
- struct tm *clock = gmtime(&nvtime);
- hw_nvram->host_time = host_time;
- hw_nvram->memory[hw_nvram->addr_year] = hw_nvram_bcd(clock->tm_year);
- hw_nvram->memory[hw_nvram->addr_month] = hw_nvram_bcd(clock->tm_mon + 1);
- hw_nvram->memory[hw_nvram->addr_date] = hw_nvram_bcd(clock->tm_mday);
- hw_nvram->memory[hw_nvram->addr_day] = hw_nvram_bcd(clock->tm_wday + 1);
- hw_nvram->memory[hw_nvram->addr_hour] = hw_nvram_bcd(clock->tm_hour);
- hw_nvram->memory[hw_nvram->addr_minutes] = hw_nvram_bcd(clock->tm_min);
- hw_nvram->memory[hw_nvram->addr_seconds] = hw_nvram_bcd(clock->tm_sec);
- }
- }
-#else
- error("fixme - where do I find out GMT\n");
-#endif
-}
-
-static void
-hw_nvram_set_clock(hw_nvram_device *hw_nvram, cpu *processor)
-{
- error ("fixme - how do I set the localtime\n");
-}
-
-static unsigned
-hw_nvram_io_read_buffer(device *me,
- void *dest,
- int space,
- unsigned_word addr,
- unsigned nr_bytes,
- cpu *processor,
- unsigned_word cia)
-{
- int i;
- hw_nvram_device *hw_nvram = (hw_nvram_device*)device_data(me);
- for (i = 0; i < nr_bytes; i++) {
- unsigned address = (addr + i) % hw_nvram->sizeof_memory;
- unsigned8 data = hw_nvram->memory[address];
- hw_nvram_update_clock(hw_nvram, processor);
- ((unsigned8*)dest)[i] = data;
- }
- return nr_bytes;
-}
-
-static unsigned
-hw_nvram_io_write_buffer(device *me,
- const void *source,
- int space,
- unsigned_word addr,
- unsigned nr_bytes,
- cpu *processor,
- unsigned_word cia)
-{
- int i;
- hw_nvram_device *hw_nvram = (hw_nvram_device*)device_data(me);
- for (i = 0; i < nr_bytes; i++) {
- unsigned address = (addr + i) % hw_nvram->sizeof_memory;
- unsigned8 data = ((unsigned8*)source)[i];
- if (address == hw_nvram->addr_control
- && (data & 0x80) == 0
- && (hw_nvram->memory[address] & 0x80) == 0x80)
- hw_nvram_set_clock(hw_nvram, processor);
- else
- hw_nvram_update_clock(hw_nvram, processor);
- hw_nvram->memory[address] = data;
- }
- return nr_bytes;
-}
-
-static device_callbacks const hw_nvram_callbacks = {
- { hw_nvram_init_address, },
- { NULL, }, /* address */
- { hw_nvram_io_read_buffer, hw_nvram_io_write_buffer }, /* IO */
-};
-
-const device_descriptor hw_nvram_device_descriptor[] = {
- { "nvram", hw_nvram_create, &hw_nvram_callbacks },
- { NULL },
-};
-
-#endif /* _HW_NVRAM_C_ */
generated by cgit v1.1 at 2024-12-05 17:30:49 +0000