diff options
Diffstat (limited to 'sys/alpha/alpha/locore.s')
| -rw-r--r-- | sys/alpha/alpha/locore.s | 50 |
1 files changed, 44 insertions, 6 deletions
diff --git a/sys/alpha/alpha/locore.s b/sys/alpha/alpha/locore.s index 221c673..2da1315 100644 --- a/sys/alpha/alpha/locore.s +++ b/sys/alpha/alpha/locore.s @@ -77,7 +77,7 @@ */ #define SWITCH_CONTEXT \ /* Make a note of the context we're running on. */ \ - stq a0, curpcb ; \ + stq a0, GD_CURPCB(globalp); \ \ /* Swap in the new context. */ \ call_pal PAL_OSF1_swpctx @@ -107,6 +107,12 @@ call_pal PAL_OSF1_wrvptptr /* clobbers a0, t0, t8-t11 */ /* + * Initialise globalp. + */ + call_pal PAL_OSF1_rdval /* clobbers t0, t8-t11 */ + mov v0, globalp + + /* * Switch to proc0's PCB, which is at U_PCB off of proc0paddr. */ lda t0,proc0 /* get phys addr of pcb */ @@ -126,18 +132,50 @@ * Note that setregs() is responsible for setting its contents * to 'reasonable' values. */ - lda sp,-(FRAME_SIZE * 8)(sp) /* space for struct trapframe */ + lda sp,-288(sp) /* space for struct trapframe */ mov sp, a0 /* arg is frame ptr */ CALL(mi_startup) /* go to mi_startup()! */ + /* NOTREACHED */ + + END(locorestart) + /* - * Call exception_return, to simulate return from (fake) - * exception to user-land, running process 1, init! + * Secondary processors start executing here. They will have their + * unique value set to point at the per-cpu structure and will + * be executing on their private idle stack. */ - jmp zero, exception_return /* "And that's all she wrote." */ - END(locorestart) + NESTED(smp_init_secondary_glue, 1, 0, ra, 0, 0) + mov pv, globalp + + ldiq a0, ALPHA_PSL_IPL_HIGH /* disable all interrupts */ + call_pal PAL_OSF1_swpipl + + br pv, 1f +1: LDGP(pv) + mov gp, a0 + call_pal PAL_OSF1_wrkgp /* clobbers a0, t0, t8-t11 */ + ldiq a0, -2 /* TBIA */ + call_pal PAL_OSF1_tbi + call_pal PAL_imb + + ldq a0, GD_IDLEPCBPHYS(globalp) /* switch to idle ctx */ + call_pal PAL_OSF1_swpctx + + CALL(smp_init_secondary) /* initialise the rest */ + + /* + * After initialising, we start idling for real. + * We have the kernel lock at this point. + */ + CALL(cpu_switch) /* never returns */ + + call_pal PAL_halt + + END(smp_init_secondary_glue) + /**************************************************************************/ /* |
