riscv/kernel/head.S

1 /* SPDX-License-Identifier: GPL-2.0-only */
6 #include <asm/asm-offsets.h>
18 #include "efi-header.S"
23 	 * Image header expected by Linux boot-loaders. The image header data
32 	c.li s4,-13
42 	/* Image load offset (0MB) from start of RAM for M-mode */
54 	.dword _end - _start
63 	.word pe_head_start - _start
141 	li t0, SR_FS_VS
149 	li a2, SBI_HART_BOOT_TASK_PTR_OFFSET
153 	li a3, SBI_HART_BOOT_STACK_PTR_OFFSET
175 	 *  - have too many harts on CONFIG_RISCV_BOOT_SPINWAIT
176 	 *  - receive an early trap, before setup_trap_vector finished
177 	 *  - fail in smp_callin(), as a successful one wouldn't return
217 	li a0, -1
219 	li a0, (PMP_A_NAPOT | PMP_R | PMP_W | PMP_X)
238 	li t0, SR_FS_VS
242 	li t0, CONFIG_NR_CPUS
251 	li a2, 1
282 	/* Clear BSS for flat non-ELF images */
300 	addi sp, sp, -PT_SIZE_ON_STACK
322 	addi sp, sp, -PT_SIZE_ON_STACK
365 	li	sp, 0
366 	li	gp, 0
367 	li	tp, 0
368 	li	t0, 0
369 	li	t1, 0
370 	li	t2, 0
371 	li	s0, 0
372 	li	s1, 0
373 	li	a2, 0
374 	li	a3, 0
375 	li	a4, 0
376 	li	a5, 0
377 	li	a6, 0
378 	li	a7, 0
379 	li	s2, 0
380 	li	s3, 0
381 	li	s4, 0
382 	li	s5, 0
383 	li	s6, 0
384 	li	s7, 0
385 	li	s8, 0
386 	li	s9, 0
387 	li	s10, 0
388 	li	s11, 0
389 	li	t3, 0
390 	li	t4, 0
391 	li	t5, 0
392 	li	t6, 0
400 	li	t1, SR_FS
441 	li	t1, COMPAT_HWCAP_ISA_V
450 	li	t1, SR_VS