haraldwolff/qemu-patch-raspberry4
1
0
Fork 0
Code Issues Pull requests Packages Projects Releases Wiki Activity

mips: Initialize MT state at reset

Browse source 
Only TC0 on VPE0 is active after reset. All other VPEs and
TCs start in sleep.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
This commit is contained in:
Edgar E. Iglesias 2011-08-29 23:07:39 +02:00
parent 1dab005ae2
commit 9e56e75624
1 changed files with 26 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

26
target-mips/translate.c
View file

@ -12813,6 +12813,32 @@ void cpu_reset (CPUMIPSState *env)
/* Count register increments in debug mode, EJTAG version 1 */
env->CP0_Debug = (1 << CP0DB_CNT) | (0x1 << CP0DB_VER);
env->hflags = MIPS_HFLAG_CP0;
if (env->CP0_Config3 & (1 << CP0C3_MT)) {
int i;
/* Only TC0 on VPE 0 starts as active. */
for (i = 0; i < ARRAY_SIZE(env->tcs); i++) {
env->tcs[i].CP0_TCBind = env->cpu_index << CP0TCBd_CurVPE;
env->tcs[i].CP0_TCHalt = 1;
}
env->active_tc.CP0_TCHalt = 1;
env->halted = 1;
if (!env->cpu_index) {
/* VPE0 starts up enabled. */
env->mvp->CP0_MVPControl |= (1 << CP0MVPCo_EVP);
env->CP0_VPEConf0 |= (1 << CP0VPEC0_MVP) | (1 << CP0VPEC0_VPA);
/* TC0 starts up unhalted. */
env->halted = 0;
env->active_tc.CP0_TCHalt = 0;
env->tcs[0].CP0_TCHalt = 0;
/* With thread 0 active. */
env->active_tc.CP0_TCStatus = (1 << CP0TCSt_A);
env->tcs[0].CP0_TCStatus = (1 << CP0TCSt_A);
}
}
#endif
#if defined(TARGET_MIPS64)
if (env->cpu_model->insn_flags & ISA_MIPS3) {