Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  *  linux/arch/sh/boot/romimage/head.S
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * Board specific setup code, executed before zImage loader
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) .text
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 	#include <asm/page.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 	.global	romstart
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) romstart:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 	/* include board specific setup code */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <mach/romimage.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #ifdef CONFIG_ROMIMAGE_MMCIF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 	/* load the romImage to above the empty zero page */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	mov.l	empty_zero_page_dst, r4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 	mov.l	empty_zero_page_dst_adj, r5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	add	r5, r4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	mov.l	bytes_to_load, r5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	mov.l	loader_function, r7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	jsr	@r7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	 mov	r4, r15
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	mov.l	empty_zero_page_dst, r4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	mov.l	empty_zero_page_dst_adj, r5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	add	r5, r4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	mov.l	loaded_code_offs, r5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	add	r5, r4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	jmp	@r4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	 nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	.balign 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) empty_zero_page_dst_adj:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	.long	PAGE_SIZE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) bytes_to_load:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	.long	end_data - romstart
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) loader_function:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	.long	mmcif_loader
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) loaded_code_offs:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	.long	loaded_code - romstart
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) loaded_code:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #endif /* CONFIG_ROMIMAGE_MMCIF */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 	/* copy the empty_zero_page contents to where vmlinux expects it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	mova	extra_data_pos, r0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	mov.l	extra_data_size, r1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 	add	r1, r0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	mov.l	empty_zero_page_dst, r1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 	mov	#(PAGE_SHIFT - 4), r4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 	mov	#1, r3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 	shld	r4, r3 /* r3 = PAGE_SIZE / 16 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 	mov.l	@r0, r4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 	mov.l	@(4, r0), r5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	mov.l	@(8, r0), r6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 	mov.l	@(12, r0), r7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 	add	#16,r0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 	mov.l	r4, @r1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 	mov.l	r5, @(4, r1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 	mov.l	r6, @(8, r1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 	mov.l	r7, @(12, r1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 	dt	r3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 	add	#16,r1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 	bf	1b
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) 	/* jump to the zImage entry point located after the zero page data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 	mov	#PAGE_SHIFT, r4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 	mov	#1, r1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) 	shld	r4, r1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) 	mova	extra_data_pos, r0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) 	add	r1, r0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) 	mov.l	extra_data_size, r1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) 	add	r1, r0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) 	jmp	@r0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) 	 nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) 	.align 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) empty_zero_page_dst:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) 	.long	_text
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) extra_data_pos:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) extra_data_size:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) 	.long	zero_page_pos - extra_data_pos