ref: 4d4107b38547c7f9f135cc22d3a29fcbad4a8c34
dir: /sys/src/9/bcm/l.s/
/* * Common startup for armv6 and armv7 * The rest of l.s has been moved to armv[67].s */ #include "arm.s" /* * on bcm2836, only cpu0 starts here * other cpus enter at cpureset in armv7.s */ TEXT _start(SB), 1, $-4 /* * load physical base for SB addressing while mmu is off * keep a handy zero in R0 until first function call */ MOVW $setR12(SB), R12 SUB $KZERO, R12 ADD $PHYSDRAM, R12 MOVW $0, R0 /* * start stack at top of mach (physical addr) */ MOVW $PADDR(MACHADDR+MACHSIZE-4), R13 /* * do arch-dependent startup (no return) */ BL ,armstart(SB) B ,0(PC) RET