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-rw-r--r--hw/m48t08.c356
1 files changed, 0 insertions, 356 deletions
diff --git a/hw/m48t08.c b/hw/m48t08.c
deleted file mode 100644
index 0945879532..0000000000
--- a/hw/m48t08.c
+++ /dev/null
@@ -1,356 +0,0 @@
-/*
- * QEMU M48T08 NVRAM emulation for Sparc platform
- *
- * Copyright (c) 2003-2004 Jocelyn Mayer
- *
- * 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 "vl.h"
-#include "m48t08.h"
-
-//#define DEBUG_NVRAM
-
-#if defined(DEBUG_NVRAM)
-#define NVRAM_PRINTF(fmt, args...) do { printf(fmt , ##args); } while (0)
-#else
-#define NVRAM_PRINTF(fmt, args...) do { } while (0)
-#endif
-
-#define NVRAM_MAX_MEM 0x1ff0
-#define NVRAM_MAXADDR 0x1fff
-
-struct m48t08_t {
- /* RTC management */
- time_t time_offset;
- time_t stop_time;
- /* NVRAM storage */
- uint8_t *buffer;
-};
-
-/* Fake timer functions */
-/* Generic helpers for BCD */
-static inline uint8_t toBCD (uint8_t value)
-{
- return (((value / 10) % 10) << 4) | (value % 10);
-}
-
-static inline uint8_t fromBCD (uint8_t BCD)
-{
- return ((BCD >> 4) * 10) + (BCD & 0x0F);
-}
-
-/* RTC management helpers */
-static void get_time (m48t08_t *NVRAM, struct tm *tm)
-{
- time_t t;
-
- t = time(NULL) + NVRAM->time_offset;
-#ifdef _WIN32
- memcpy(tm,localtime(&t),sizeof(*tm));
-#else
- localtime_r (&t, tm) ;
-#endif
-}
-
-static void set_time (m48t08_t *NVRAM, struct tm *tm)
-{
- time_t now, new_time;
-
- new_time = mktime(tm);
- now = time(NULL);
- NVRAM->time_offset = new_time - now;
-}
-
-/* Direct access to NVRAM */
-void m48t08_write (m48t08_t *NVRAM, uint32_t addr, uint8_t val)
-{
- struct tm tm;
- int tmp;
-
- addr &= NVRAM_MAXADDR;
- switch (addr) {
- case 0x1FF8:
- /* control */
- NVRAM->buffer[0x1FF8] = (val & ~0xA0) | 0x90;
- break;
- case 0x1FF9:
- /* seconds (BCD) */
- tmp = fromBCD(val & 0x7F);
- if (tmp >= 0 && tmp <= 59) {
- get_time(NVRAM, &tm);
- tm.tm_sec = tmp;
- set_time(NVRAM, &tm);
- }
- if ((val & 0x80) ^ (NVRAM->buffer[0x1FF9] & 0x80)) {
- if (val & 0x80) {
- NVRAM->stop_time = time(NULL);
- } else {
- NVRAM->time_offset += NVRAM->stop_time - time(NULL);
- NVRAM->stop_time = 0;
- }
- }
- NVRAM->buffer[0x1FF9] = val & 0x80;
- break;
- case 0x1FFA:
- /* minutes (BCD) */
- tmp = fromBCD(val & 0x7F);
- if (tmp >= 0 && tmp <= 59) {
- get_time(NVRAM, &tm);
- tm.tm_min = tmp;
- set_time(NVRAM, &tm);
- }
- break;
- case 0x1FFB:
- /* hours (BCD) */
- tmp = fromBCD(val & 0x3F);
- if (tmp >= 0 && tmp <= 23) {
- get_time(NVRAM, &tm);
- tm.tm_hour = tmp;
- set_time(NVRAM, &tm);
- }
- break;
- case 0x1FFC:
- /* day of the week / century */
- tmp = fromBCD(val & 0x07);
- get_time(NVRAM, &tm);
- tm.tm_wday = tmp;
- set_time(NVRAM, &tm);
- NVRAM->buffer[0x1FFC] = val & 0x40;
- break;
- case 0x1FFD:
- /* date */
- tmp = fromBCD(val & 0x1F);
- if (tmp != 0) {
- get_time(NVRAM, &tm);
- tm.tm_mday = tmp;
- set_time(NVRAM, &tm);
- }
- break;
- case 0x1FFE:
- /* month */
- tmp = fromBCD(val & 0x1F);
- if (tmp >= 1 && tmp <= 12) {
- get_time(NVRAM, &tm);
- tm.tm_mon = tmp - 1;
- set_time(NVRAM, &tm);
- }
- break;
- case 0x1FFF:
- /* year */
- tmp = fromBCD(val);
- if (tmp >= 0 && tmp <= 99) {
- get_time(NVRAM, &tm);
- tm.tm_year = fromBCD(val);
- set_time(NVRAM, &tm);
- }
- break;
- default:
- NVRAM->buffer[addr] = val & 0xFF;
- break;
- }
-}
-
-uint8_t m48t08_read (m48t08_t *NVRAM, uint32_t addr)
-{
- struct tm tm;
- uint8_t retval = 0xFF;
-
- addr &= NVRAM_MAXADDR;
- switch (addr) {
- case 0x1FF8:
- /* control */
- goto do_read;
- case 0x1FF9:
- /* seconds (BCD) */
- get_time(NVRAM, &tm);
- retval = (NVRAM->buffer[0x1FF9] & 0x80) | toBCD(tm.tm_sec);
- break;
- case 0x1FFA:
- /* minutes (BCD) */
- get_time(NVRAM, &tm);
- retval = toBCD(tm.tm_min);
- break;
- case 0x1FFB:
- /* hours (BCD) */
- get_time(NVRAM, &tm);
- retval = toBCD(tm.tm_hour);
- break;
- case 0x1FFC:
- /* day of the week / century */
- get_time(NVRAM, &tm);
- retval = NVRAM->buffer[0x1FFC] | tm.tm_wday;
- break;
- case 0x1FFD:
- /* date */
- get_time(NVRAM, &tm);
- retval = toBCD(tm.tm_mday);
- break;
- case 0x1FFE:
- /* month */
- get_time(NVRAM, &tm);
- retval = toBCD(tm.tm_mon + 1);
- break;
- case 0x1FFF:
- /* year */
- get_time(NVRAM, &tm);
- retval = toBCD(tm.tm_year);
- break;
- default:
- do_read:
- retval = NVRAM->buffer[addr];
- break;
- }
- return retval;
-}
-
-static void nvram_writeb (void *opaque, target_phys_addr_t addr, uint32_t value)
-{
- m48t08_t *NVRAM = opaque;
-
- m48t08_write(NVRAM, addr, value);
-}
-
-static void nvram_writew (void *opaque, target_phys_addr_t addr, uint32_t value)
-{
- m48t08_t *NVRAM = opaque;
-
- m48t08_write(NVRAM, addr, value);
- m48t08_write(NVRAM, addr + 1, value >> 8);
-}
-
-static void nvram_writel (void *opaque, target_phys_addr_t addr, uint32_t value)
-{
- m48t08_t *NVRAM = opaque;
-
- m48t08_write(NVRAM, addr, value);
- m48t08_write(NVRAM, addr + 1, value >> 8);
- m48t08_write(NVRAM, addr + 2, value >> 16);
- m48t08_write(NVRAM, addr + 3, value >> 24);
-}
-
-static uint32_t nvram_readb (void *opaque, target_phys_addr_t addr)
-{
- m48t08_t *NVRAM = opaque;
- uint32_t retval = 0;
-
- retval = m48t08_read(NVRAM, addr);
- return retval;
-}
-
-static uint32_t nvram_readw (void *opaque, target_phys_addr_t addr)
-{
- m48t08_t *NVRAM = opaque;
- uint32_t retval = 0;
-
- retval = m48t08_read(NVRAM, addr) << 8;
- retval |= m48t08_read(NVRAM, addr + 1);
- return retval;
-}
-
-static uint32_t nvram_readl (void *opaque, target_phys_addr_t addr)
-{
- m48t08_t *NVRAM = opaque;
- uint32_t retval = 0;
-
- retval = m48t08_read(NVRAM, addr) << 24;
- retval |= m48t08_read(NVRAM, addr + 1) << 16;
- retval |= m48t08_read(NVRAM, addr + 2) << 8;
- retval |= m48t08_read(NVRAM, addr + 3);
- return retval;
-}
-
-static CPUWriteMemoryFunc *nvram_write[] = {
- &nvram_writeb,
- &nvram_writew,
- &nvram_writel,
-};
-
-static CPUReadMemoryFunc *nvram_read[] = {
- &nvram_readb,
- &nvram_readw,
- &nvram_readl,
-};
-
-static void nvram_save(QEMUFile *f, void *opaque)
-{
- m48t08_t *s = opaque;
-
- qemu_put_be32s(f, (uint32_t *)&s->time_offset);
- qemu_put_be32s(f, (uint32_t *)&s->stop_time);
- qemu_put_buffer(f, s->buffer, 0x2000);
-}
-
-static int nvram_load(QEMUFile *f, void *opaque, int version_id)
-{
- m48t08_t *s = opaque;
-
- if (version_id != 1)
- return -EINVAL;
-
- qemu_get_be32s(f, (uint32_t *)&s->time_offset);
- qemu_get_be32s(f, (uint32_t *)&s->stop_time);
- qemu_get_buffer(f, s->buffer, 0x2000);
- return 0;
-}
-
-static void m48t08_reset(void *opaque)
-{
- m48t08_t *s = opaque;
-
- s->time_offset = 0;
- s->stop_time = 0;
-}
-
-
-/* Initialisation routine */
-m48t08_t *m48t08_init(uint32_t mem_base, uint16_t size)
-{
- m48t08_t *s;
- int mem_index;
-
- s = qemu_mallocz(sizeof(m48t08_t));
- if (!s)
- return NULL;
- s->buffer = qemu_mallocz(size);
- if (!s->buffer) {
- qemu_free(s);
- return NULL;
- }
- if (mem_base != 0) {
- mem_index = cpu_register_io_memory(0, nvram_read, nvram_write, s);
- cpu_register_physical_memory(mem_base, 0x2000, mem_index);
- }
-
- register_savevm("nvram", mem_base, 1, nvram_save, nvram_load, s);
- qemu_register_reset(m48t08_reset, s);
- return s;
-}
-
-#if 0
-struct idprom
-{
- unsigned char id_format; /* Format identifier (always 0x01) */
- unsigned char id_machtype; /* Machine type */
- unsigned char id_ethaddr[6]; /* Hardware ethernet address */
- long id_date; /* Date of manufacture */
- unsigned int id_sernum:24; /* Unique serial number */
- unsigned char id_cksum; /* Checksum - xor of the data bytes */
- unsigned char reserved[16];
-};
-#endif
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