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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3231 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
blueswir1 2007-09-24 19:44:09 +00:00
parent 9437454a84
commit 40ce0a9a8f
6 changed files with 21 additions and 10 deletions
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1
target-sparc/cpu.h
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@ -145,6 +145,7 @@
/* MMU */
#define MMU_E (1<<0)
#define MMU_NF (1<<1)
#define MMU_BM (1<<14)
#define PTE_ENTRYTYPE_MASK 3
#define PTE_ACCESS_MASK 0x1c

7
target-sparc/helper.c
View file

@ -110,7 +110,14 @@ int get_physical_address (CPUState *env, target_phys_addr_t *physical, int *prot
unsigned long page_offset;
virt_addr = address & TARGET_PAGE_MASK;
if ((env->mmuregs[0] & MMU_E) == 0) { /* MMU disabled */
// Boot mode: instruction fetches are taken from PROM
if (rw == 2 && (env->mmuregs[0] & MMU_BM)) {
*physical = 0xff0000000ULL | (address & 0x3ffffULL);
*prot = PAGE_READ | PAGE_EXEC;
return 0;
}
*physical = address;
*prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
return 0;

4
target-sparc/op_helper.c
View file

@ -337,8 +337,8 @@ void helper_st_asi(int asi, int size)
oldreg = env->mmuregs[reg];
switch(reg) {
case 0:
env->mmuregs[reg] &= ~(MMU_E | MMU_NF);
env->mmuregs[reg] |= T1 & (MMU_E | MMU_NF);
env->mmuregs[reg] &= ~(MMU_E | MMU_NF | MMU_BM);
env->mmuregs[reg] |= T1 & (MMU_E | MMU_NF | MMU_BM);
// Mappings generated during no-fault mode or MMU
// disabled mode are invalid in normal mode
if (oldreg != env->mmuregs[reg])

5
target-sparc/translate.c
View file

@ -3486,8 +3486,9 @@ void cpu_reset(CPUSPARCState *env)
env->pstate = PS_PRIV;
env->pc = 0x1fff0000000ULL;
#else
env->pc = 0xffd00000;
env->pc = 0;
env->mmuregs[0] &= ~(MMU_E | MMU_NF);
env->mmuregs[0] |= MMU_BM;
#endif
env->npc = env->pc + 4;
#endif
@ -3584,7 +3585,7 @@ int cpu_sparc_register (CPUSPARCState *env, const sparc_def_t *def)
env->version = def->iu_version;
env->fsr = def->fpu_version;
#if !defined(TARGET_SPARC64)
env->mmuregs[0] = def->mmu_version;
env->mmuregs[0] |= def->mmu_version;
#endif
return 0;
}