armv8/fsl-lsch3: Release secondary cores from boot hold off with Boot Page

Secondary cores need to be released from holdoff by boot release
registers. With GPP bootrom, they can boot from main memory
directly. Individual spin table is used for each core. Spin table
and the boot page is reserved in device tree so OS won't overwrite.

Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Arnab Basu <arnab.basu@freescale.com>

1 files changed, 93 insertions, 0 deletions

diff --git a/arch/arm/include/asm/macro.h b/arch/arm/include/asm/macro.h
index f77e4b8..541b443 100644
--- a/arch/arm/include/asm/macro.h
+++ b/arch/arm/include/asm/macro.h
@@ -105,6 +105,99 @@ lr	.req	x30
 	cbz	\xreg1, \master_label
 .endm
 
+.macro armv8_switch_to_el2_m, xreg1
+	/* 64bit EL2 | HCE | SMD | RES1 (Bits[5:4]) | Non-secure EL0/EL1 */
+	mov	\xreg1, #0x5b1
+	msr	scr_el3, \xreg1
+	msr	cptr_el3, xzr		/* Disable coprocessor traps to EL3 */
+	mov	\xreg1, #0x33ff
+	msr	cptr_el2, \xreg1	/* Disable coprocessor traps to EL2 */
+
+	/* Initialize SCTLR_EL2
+	 *
+	 * setting RES1 bits (29,28,23,22,18,16,11,5,4) to 1
+	 * and RES0 bits (31,30,27,26,24,21,20,17,15-13,10-6) +
+	 * EE,WXN,I,SA,C,A,M to 0
+	 */
+	mov	\xreg1, #0x0830
+	movk	\xreg1, #0x30C5, lsl #16
+	msr	sctlr_el2, \xreg1
+
+	/* Return to the EL2_SP2 mode from EL3 */
+	mov	\xreg1, sp
+	msr	sp_el2, \xreg1		/* Migrate SP */
+	mrs	\xreg1, vbar_el3
+	msr	vbar_el2, \xreg1	/* Migrate VBAR */
+	mov	\xreg1, #0x3c9
+	msr	spsr_el3, \xreg1	/* EL2_SP2 | D | A | I | F */
+	msr	elr_el3, lr
+	eret
+.endm
+
+.macro armv8_switch_to_el1_m, xreg1, xreg2
+	/* Initialize Generic Timers */
+	mrs	\xreg1, cnthctl_el2
+	orr	\xreg1, \xreg1, #0x3	/* Enable EL1 access to timers */
+	msr	cnthctl_el2, \xreg1
+	msr	cntvoff_el2, xzr
+
+	/* Initilize MPID/MPIDR registers */
+	mrs	\xreg1, midr_el1
+	mrs	\xreg2, mpidr_el1
+	msr	vpidr_el2, \xreg1
+	msr	vmpidr_el2, \xreg2
+
+	/* Disable coprocessor traps */
+	mov	\xreg1, #0x33ff
+	msr	cptr_el2, \xreg1	/* Disable coprocessor traps to EL2 */
+	msr	hstr_el2, xzr		/* Disable coprocessor traps to EL2 */
+	mov	\xreg1, #3 << 20
+	msr	cpacr_el1, \xreg1	/* Enable FP/SIMD at EL1 */
+
+	/* Initialize HCR_EL2 */
+	mov	\xreg1, #(1 << 31)		/* 64bit EL1 */
+	orr	\xreg1, \xreg1, #(1 << 29)	/* Disable HVC */
+	msr	hcr_el2, \xreg1
+
+	/* SCTLR_EL1 initialization
+	 *
+	 * setting RES1 bits (29,28,23,22,20,11) to 1
+	 * and RES0 bits (31,30,27,21,17,13,10,6) +
+	 * UCI,EE,EOE,WXN,nTWE,nTWI,UCT,DZE,I,UMA,SED,ITD,
+	 * CP15BEN,SA0,SA,C,A,M to 0
+	 */
+	mov	\xreg1, #0x0800
+	movk	\xreg1, #0x30d0, lsl #16
+	msr	sctlr_el1, \xreg1
+
+	/* Return to the EL1_SP1 mode from EL2 */
+	mov	\xreg1, sp
+	msr	sp_el1, \xreg1		/* Migrate SP */
+	mrs	\xreg1, vbar_el2
+	msr	vbar_el1, \xreg1	/* Migrate VBAR */
+	mov	\xreg1, #0x3c5
+	msr	spsr_el2, \xreg1	/* EL1_SP1 | D | A | I | F */
+	msr	elr_el2, lr
+	eret
+.endm
+
+#if defined(CONFIG_GICV3)
+.macro gic_wait_for_interrupt_m xreg1
+0 :	wfi
+	mrs     \xreg1, ICC_IAR1_EL1
+	msr     ICC_EOIR1_EL1, \xreg1
+	cbnz    \xreg1, 0b
+.endm
+#elif defined(CONFIG_GICV2)
+.macro gic_wait_for_interrupt_m xreg1, wreg2
+0 :	wfi
+	ldr     \wreg2, [\xreg1, GICC_AIAR]
+	str     \wreg2, [\xreg1, GICC_AEOIR]
+	and	\wreg2, \wreg2, #3ff
+	cbnz    \wreg2, 0b
+.endm
+#endif
+
 #endif /* CONFIG_ARM64 */
 
 #endif /* __ASSEMBLY__ */