Revision 5fafdf24 hw/m48t59.c
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/* |
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* QEMU M48T59 and M48T08 NVRAM emulation for PPC PREP and Sparc platforms |
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*
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* |
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* Copyright (c) 2003-2005, 2007 Jocelyn Mayer |
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*
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a copy |
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* of this software and associated documentation files (the "Software"), to deal |
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* in the Software without restriction, including without limitation the rights |
| ... | ... | |
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static void set_time (m48t59_t *NVRAM, struct tm *tm) |
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{
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time_t now, new_time; |
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new_time = mktime(tm); |
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now = time(NULL); |
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NVRAM->time_offset = new_time - now; |
| ... | ... | |
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m48t59_t *NVRAM = opaque; |
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qemu_set_irq(NVRAM->IRQ, 1); |
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if ((NVRAM->buffer[0x1FF5] & 0x80) == 0 &&
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if ((NVRAM->buffer[0x1FF5] & 0x80) == 0 && |
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(NVRAM->buffer[0x1FF4] & 0x80) == 0 && |
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(NVRAM->buffer[0x1FF3] & 0x80) == 0 && |
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(NVRAM->buffer[0x1FF2] & 0x80) == 0) {
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| ... | ... | |
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if (addr > 0x1FF8 && addr < 0x2000) |
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NVRAM_PRINTF("%s: 0x%08x => 0x%08x\n", __func__, addr, val);
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if (NVRAM->type == 8 &&
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if (NVRAM->type == 8 && |
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(addr >= 0x1ff0 && addr <= 0x1ff7)) |
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goto do_write; |
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switch (addr) {
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| ... | ... | |
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struct tm tm; |
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uint32_t retval = 0xFF; |
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if (NVRAM->type == 8 &&
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if (NVRAM->type == 8 && |
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(addr >= 0x1ff0 && addr <= 0x1ff7)) |
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goto do_read; |
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switch (addr) {
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| ... | ... | |
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case 0x1FFF: |
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/* year */ |
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get_time(NVRAM, &tm); |
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if (NVRAM->type == 8)
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if (NVRAM->type == 8) |
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retval = toBCD(tm.tm_year - 68); // Base year is 1968 |
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else |
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retval = toBCD(tm.tm_year); |
| ... | ... | |
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static void nvram_writeb (void *opaque, target_phys_addr_t addr, uint32_t value) |
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{
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m48t59_t *NVRAM = opaque; |
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addr -= NVRAM->mem_base; |
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m48t59_write(NVRAM, addr, value & 0xff); |
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} |
| ... | ... | |
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static void nvram_writew (void *opaque, target_phys_addr_t addr, uint32_t value) |
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{
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m48t59_t *NVRAM = opaque; |
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addr -= NVRAM->mem_base; |
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m48t59_write(NVRAM, addr, (value >> 8) & 0xff); |
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m48t59_write(NVRAM, addr + 1, value & 0xff); |
| ... | ... | |
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static void nvram_writel (void *opaque, target_phys_addr_t addr, uint32_t value) |
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{
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m48t59_t *NVRAM = opaque; |
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addr -= NVRAM->mem_base; |
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m48t59_write(NVRAM, addr, (value >> 24) & 0xff); |
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m48t59_write(NVRAM, addr + 1, (value >> 16) & 0xff); |
| ... | ... | |
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{
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m48t59_t *NVRAM = opaque; |
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uint32_t retval; |
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addr -= NVRAM->mem_base; |
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retval = m48t59_read(NVRAM, addr); |
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return retval; |
| ... | ... | |
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{
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m48t59_t *NVRAM = opaque; |
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uint32_t retval; |
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addr -= NVRAM->mem_base; |
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retval = m48t59_read(NVRAM, addr) << 8; |
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retval |= m48t59_read(NVRAM, addr + 1); |
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