| Line 53... |
Line 53... |
struct dev_memarea *dev_list;
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struct dev_memarea *dev_list;
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/* Temporary variable to increase speed. */
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/* Temporary variable to increase speed. */
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struct dev_memarea *cur_area;
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struct dev_memarea *cur_area;
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/* Pointer to memory controller device descriptor. */
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struct dev_memarea *mc_area = (struct dev_memarea *)0;
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/* These are set by mmu if cache inhibit bit is set for current acces. */
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/* These are set by mmu if cache inhibit bit is set for current acces. */
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int data_ci, insn_ci;
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int data_ci, insn_ci;
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/* Virtual address of current access. */
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/* Virtual address of current access. */
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unsigned long cur_vadd;
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unsigned long cur_vadd;
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| Line 72... |
Line 75... |
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/* Register read and write function for a memory area.
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/* Register read and write function for a memory area.
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addr is inside the area, if addr & addr_mask == addr_compare
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addr is inside the area, if addr & addr_mask == addr_compare
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(used also by peripheral devices like 16450 UART etc.) */
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(used also by peripheral devices like 16450 UART etc.) */
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void register_memoryarea_mask(unsigned long addr_mask, unsigned long addr_compare,
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void register_memoryarea_mask(unsigned long addr_mask, unsigned long addr_compare,
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unsigned long size, unsigned granularity,
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unsigned long size, unsigned granularity, unsigned mc_dev,
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unsigned long (readfunc)(unsigned long),
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unsigned long (readfunc)(unsigned long),
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void (writefunc)(unsigned long, unsigned long))
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void (writefunc)(unsigned long, unsigned long))
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{
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{
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struct dev_memarea **pptmp;
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struct dev_memarea **pptmp;
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unsigned long size_mask = bit_mask (size);
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unsigned long size_mask = bit_mask (size);
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| Line 99... |
Line 102... |
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if (found_error)
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if (found_error)
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exit (-1);
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exit (-1);
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cur_area = *pptmp = (struct dev_memarea *)malloc(sizeof(struct dev_memarea));
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cur_area = *pptmp = (struct dev_memarea *)malloc(sizeof(struct dev_memarea));
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if (mc_dev)
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mc_area = *pptmp;
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(*pptmp)->addr_mask = addr_mask;
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(*pptmp)->addr_mask = addr_mask;
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(*pptmp)->addr_compare = addr_compare;
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(*pptmp)->addr_compare = addr_compare;
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(*pptmp)->size = size;
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(*pptmp)->size = size;
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(*pptmp)->size_mask = size_mask;
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(*pptmp)->size_mask = size_mask;
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(*pptmp)->granularity = granularity;
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(*pptmp)->granularity = granularity;
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| Line 115... |
Line 122... |
}
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}
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/* Register read and write function for a memory area.
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/* Register read and write function for a memory area.
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Memory areas should be aligned. Memory area is rounded up to
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Memory areas should be aligned. Memory area is rounded up to
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fit the nearest 2^n aligment.
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fit the nearest 2^n aligment.
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(used also by peripheral devices like 16450 UART etc.) */
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(used also by peripheral devices like 16450 UART etc.)
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If mc_dev is 1, this means that this device will be checked first for match
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and will be accessed in case in overlaping memory spaces.
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Only one device can have this set to 1 (used for memory controller) */
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void register_memoryarea(unsigned long addr,
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void register_memoryarea(unsigned long addr,
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unsigned long size, unsigned granularity,
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unsigned long size, unsigned granularity, unsigned mc_dev,
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unsigned long (readfunc)(unsigned long),
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unsigned long (readfunc)(unsigned long),
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void (writefunc)(unsigned long, unsigned long))
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void (writefunc)(unsigned long, unsigned long))
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{
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{
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unsigned long size_mask = bit_mask (size);
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unsigned long size_mask = bit_mask (size);
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unsigned long addr_mask = ~size_mask;
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unsigned long addr_mask = ~size_mask;
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register_memoryarea_mask (addr_mask, addr & addr_mask,
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register_memoryarea_mask (addr_mask, addr & addr_mask,
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size_mask + 1, granularity,
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size_mask + 1, granularity, mc_dev,
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readfunc, writefunc);
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readfunc, writefunc);
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}
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}
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/* Check if access is to registered area of memory. */
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/* Check if access is to registered area of memory. */
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inline struct dev_memarea *verify_memoryarea(unsigned long addr)
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inline struct dev_memarea *verify_memoryarea(unsigned long addr)
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{
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{
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struct dev_memarea *ptmp;
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struct dev_memarea *ptmp;
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/* Check cached value first */
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/* Check memory controller space first */
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if (mc_area && (addr & mc_area->addr_mask) == (mc_area->addr_compare & mc_area->addr_mask))
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return cur_area = mc_area;
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/* Check cached value */
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if (cur_area && (addr & cur_area->addr_mask) == (cur_area->addr_compare & cur_area->addr_mask))
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if (cur_area && (addr & cur_area->addr_mask) == (cur_area->addr_compare & cur_area->addr_mask))
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return cur_area;
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return cur_area;
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/* When mc is enabled, we must check valid also, otherwise we assume it is nonzero */
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/* When mc is enabled, we must check valid also, otherwise we assume it is nonzero */
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IFF (config.mc.enabled) {
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IFF (config.mc.enabled) {
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| Line 654... |
Line 668... |
int wd = config.memory.table[i].delayw;
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int wd = config.memory.table[i].delayw;
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int ce = config.memory.table[i].ce;
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int ce = config.memory.table[i].ce;
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if (config.sim.verbose)
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if (config.sim.verbose)
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debug (1, "%08X %08X (%i KB): %s (activated by CE%i; read delay = %icyc, write delay = %icyc)\n",
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debug (1, "%08X %08X (%i KB): %s (activated by CE%i; read delay = %icyc, write delay = %icyc)\n",
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start, length, length >> 10, type, ce, rd, wd);
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start, length, length >> 10, type, ce, rd, wd);
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register_memoryarea(start, length, 4, &simmem_read_word, &simmem_write_word);
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register_memoryarea(start, length, 4, 0, &simmem_read_word, &simmem_write_word);
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cur_area->misc = memory_needed;
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cur_area->misc = memory_needed;
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cur_area->chip_select = ce;
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cur_area->chip_select = ce;
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cur_area->valid = 1;
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cur_area->valid = 1;
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cur_area->delayw = wd;
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cur_area->delayw = wd;
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cur_area->delayr = rd;
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cur_area->delayr = rd;
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| Line 671... |
Line 685... |
}
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}
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printf ("\n");
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printf ("\n");
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} else {
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} else {
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if (config.sim.verbose)
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if (config.sim.verbose)
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fprintf (stderr, "WARNING: Memory not defined, assuming standard configuration.\n");
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fprintf (stderr, "WARNING: Memory not defined, assuming standard configuration.\n");
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register_memoryarea(DEFAULT_MEMORY_START, DEFAULT_MEMORY_LEN, 4, &simmem_read_word, &simmem_write_word);
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register_memoryarea(DEFAULT_MEMORY_START, DEFAULT_MEMORY_LEN, 4, 0, &simmem_read_word, &simmem_write_word);
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cur_area->misc = memory_needed;
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cur_area->misc = memory_needed;
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cur_area->chip_select = 0;
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cur_area->chip_select = 0;
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cur_area->valid = 1;
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cur_area->valid = 1;
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cur_area->delayw = 1;
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cur_area->delayw = 1;
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cur_area->delayr = 1;
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cur_area->delayr = 1;
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