Lines Matching full:rtas

9  * RTAS is called with MSR IR, DR, EE disabled, and LR in the return address.
11  * Note: r3 is an input parameter to rtas, so don't trash it...
19 	LOAD_REG_ADDR(r4, rtas)
20 	lis	r6,1f@ha	/* physical return address for rtas */
55  * 32-bit rtas on 64-bit machines has the additional problem that RTAS may
63 	/* Because RTAS is running in 32b mode, it clobbers the high order half
65 	 * RTAS might touch to the stack.  (r0, r3-r12 are caller saved)
81 	/* Temporary workaround to clear CR until RTAS can be modified to
91 	 * our original state after RTAS returns.
102 	LOAD_REG_ADDR(r4, rtas)
103 	ld	r5,RTASENTRY(r4)	/* get the rtas->entry value */
104 	ld	r4,RTASBASE(r4)		/* get the rtas->base value */
107 	 * RTAS runs in 32-bit big endian real mode, but leave MSR[RI] on as we
108 	 * may hit NMI (SRESET or MCE) while in RTAS. RTAS should disable RI in
111 	 * MSR[S] is set, it will remain when entering RTAS.
112 	 * If we're in HV mode, RTAS must also run in HV mode, so extract MSR_HV
113 	 * from the saved MSR value and insert into the value RTAS will use.