source: mainline/kernel/arch/sparc64/src/start.S@ a5f76758

#
# Copyright (C) 2005 Jakub Jermar
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#
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# modification, are permitted provided that the following conditions
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#include <arch/regdef.h>

.register %g2, #scratch
.register %g3, #scratch
.register %g6, #scratch
.register %g7, #scratch

.section K_TEXT_START, "ax"

/*
 * Here is where the kernel is passed control
 * from the boot loader.
 * 
 * The registers are expected to be in this state:
 * %o0 bootinfo structure address
 * %o1 bootinfo structure size
 */

.global kernel_image_start
kernel_image_start:
        flushw                          ! flush all but the active register window

        /*
         * Disable interrupts and disable 32-bit address masking.
         */
        rdpr %pstate, %l0
        and %l0, ~(PSTATE_AM_BIT|PSTATE_IE_BIT), %l0
        wrpr %l0, 0, %pstate

        /*
         * Copy the bootinfo structure passed from the boot loader
         * to the kernel bootinfo structure.
         */
        mov %o1, %o2
        mov %o0, %o1
        set bootinfo, %o0
        call memcpy
        nop

        wrpr %r0, 0, %pil

        call main_bsp
        nop

        /* Not reached. */

2:
        b 2b
        nop