| Line 35... |
Line 35... |
#include "stats.h"
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#include "stats.h"
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#include "sprs.h"
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#include "sprs.h"
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#include "except.h"
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#include "except.h"
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#include "sim-config.h"
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#include "sim-config.h"
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#include "debug.h"
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#include "debug.h"
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#include "misc.h"
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DEFAULT_DEBUG_CHANNEL(immu);
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DEFAULT_DEBUG_CHANNEL(immu);
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/* Insn MMU */
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/* Insn MMU */
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/* Precalculates some values for use during address translation */
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/* Precalculates some values for use during address translation */
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void init_immu(void)
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void init_immu(void)
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{
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{
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config.immu.pagesize_log2 = log2(config.immu.pagesize);
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config.immu.pagesize_log2 = log2_int(config.immu.pagesize);
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config.immu.page_offset_mask = config.immu.pagesize - 1;
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config.immu.page_offset_mask = config.immu.pagesize - 1;
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config.immu.page_mask = ~config.immu.page_offset_mask;
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config.immu.page_mask = ~config.immu.page_offset_mask;
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config.immu.vpn_mask = ~((config.immu.pagesize * config.immu.nsets) - 1);
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config.immu.vpn_mask = ~((config.immu.pagesize * config.immu.nsets) - 1);
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config.immu.set_mask = config.immu.nsets - 1;
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config.immu.set_mask = config.immu.nsets - 1;
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config.immu.lru_reload = (config.immu.set_mask << 6) & SPR_ITLBMR_LRU;
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config.immu.lru_reload = (config.immu.set_mask << 6) & SPR_ITLBMR_LRU;
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| Line 284... |
Line 285... |
void immu_nsets(union param_val val, void *dat)
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void immu_nsets(union param_val val, void *dat)
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{
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{
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if (is_power2(val.int_val) && val.int_val <= 256) {
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if (is_power2(val.int_val) && val.int_val <= 256) {
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config.immu.nsets = val.int_val;
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config.immu.nsets = val.int_val;
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cpu_state.sprs[SPR_IMMUCFGR] &= ~SPR_IMMUCFGR_NTS;
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cpu_state.sprs[SPR_IMMUCFGR] &= ~SPR_IMMUCFGR_NTS;
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cpu_state.sprs[SPR_IMMUCFGR] |= log2(val.int_val) << 3;
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cpu_state.sprs[SPR_IMMUCFGR] |= log2_int(val.int_val) << 3;
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}
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}
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else
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else
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CONFIG_ERROR("value of power of two and lower or equal than 256 expected.");
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CONFIG_ERROR("value of power of two and lower or equal than 256 expected.");
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}
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}
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