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- /* SPDX-License-Identifier: GPL-2.0-only */
- /*
- * arch/arm/mach-spear13XX/headsmp.S
- *
- * Picked from realview
- * Copyright (c) 2012 ST Microelectronics Limited
- * Shiraz Hashim <[email protected]>
- */
- #include <linux/linkage.h>
- #include <linux/init.h>
- __INIT
- /*
- * spear13xx specific entry point for secondary CPUs. This provides
- * a "holding pen" into which all secondary cores are held until we're
- * ready for them to initialise.
- */
- ENTRY(spear13xx_secondary_startup)
- mrc p15, 0, r0, c0, c0, 5
- and r0, r0, #15
- adr r4, 1f
- ldmia r4, {r5, r6}
- sub r4, r4, r5
- add r6, r6, r4
- pen: ldr r7, [r6]
- cmp r7, r0
- bne pen
- /* re-enable coherency */
- mrc p15, 0, r0, c1, c0, 1
- orr r0, r0, #(1 << 6) | (1 << 0)
- mcr p15, 0, r0, c1, c0, 1
- /*
- * we've been released from the holding pen: secondary_stack
- * should now contain the SVC stack for this core
- */
- b secondary_startup
- .align
- 1: .long .
- .long spear_pen_release
- ENDPROC(spear13xx_secondary_startup)
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