1 // SPDX-License-Identifier: GPL-2.0+
3  * Corscience GmbH & Co. KG - Simon Schwarz <schwarz@corscience.de>
4  *  - Added prep subcommand support
5  *  - Reorganized source - modeled after powerpc version
8  * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
19 #include <u-boot/zlib.h>
55 	 * Allocate space for command line and board info - the  in arch_lmb_reserve()
56 	 * address should be as high as possible within the reach of  in arch_lmb_reserve()
65 	sp -= 4096;  in arch_lmb_reserve()
67 		if (!gd->bd->bi_dram[bank].size ||  in arch_lmb_reserve()
68 		    sp < gd->bd->bi_dram[bank].start)  in arch_lmb_reserve()
70 		/* Watch out for RAM at end of address space! */  in arch_lmb_reserve()
71 		bank_end = gd->bd->bi_dram[bank].start +  in arch_lmb_reserve()
72 			gd->bd->bi_dram[bank].size - 1;  in arch_lmb_reserve()
75 		lmb_reserve(lmb, sp, bank_end - sp + 1);  in arch_lmb_reserve()
85  * announce_and_cleanup() - Print message and prepare for kernel boot
87  * @fake: non-zero to do everything except actually boot
109 	 * This may be useful for last-stage operations, like cancelling  in announce_and_cleanup()
117 static void setup_start_tag (bd_t *bd)  in setup_start_tag()  argument
119 	params = (struct tag *)bd->bi_boot_params;  in setup_start_tag()
121 	params->hdr.tag = ATAG_CORE;  in setup_start_tag()
122 	params->hdr.size = tag_size (tag_core);  in setup_start_tag()
124 	params->u.core.flags = 0;  in setup_start_tag()
125 	params->u.core.pagesize = 0;  in setup_start_tag()
126 	params->u.core.rootdev = 0;  in setup_start_tag()
131 static void setup_memory_tags(bd_t *bd)  in setup_memory_tags()  argument
136 		params->hdr.tag = ATAG_MEM;  in setup_memory_tags()
137 		params->hdr.size = tag_size (tag_mem32);  in setup_memory_tags()
139 		params->u.mem.start = bd->bi_dram[i].start;  in setup_memory_tags()
140 		params->u.mem.size = bd->bi_dram[i].size;  in setup_memory_tags()
146 static void setup_commandline_tag(bd_t *bd, char *commandline)  in setup_commandline_tag()  argument
156 	/* skip non-existent command lines so the kernel will still  in setup_commandline_tag()
162 	params->hdr.tag = ATAG_CMDLINE;  in setup_commandline_tag()
163 	params->hdr.size =  in setup_commandline_tag()
166 	strcpy (params->u.cmdline.cmdline, p);  in setup_commandline_tag()
171 static void setup_initrd_tag(bd_t *bd, ulong initrd_start, ulong initrd_end)  in setup_initrd_tag()  argument
176 	params->hdr.tag = ATAG_INITRD2;  in setup_initrd_tag()
177 	params->hdr.size = tag_size (tag_initrd);  in setup_initrd_tag()
179 	params->u.initrd.start = initrd_start;  in setup_initrd_tag()
180 	params->u.initrd.size = initrd_end - initrd_start;  in setup_initrd_tag()
191 	params->hdr.tag = ATAG_SERIAL;  in setup_serial_tag()
192 	params->hdr.size = tag_size (tag_serialnr);  in setup_serial_tag()
193 	params->u.serialnr.low = serialnr.low;  in setup_serial_tag()
194 	params->u.serialnr.high= serialnr.high;  in setup_serial_tag()
204 	params->hdr.tag = ATAG_REVISION;  in setup_revision_tag()
205 	params->hdr.size = tag_size (tag_revision);  in setup_revision_tag()
206 	params->u.revision.rev = rev;  in setup_revision_tag()
210 static void setup_end_tag(bd_t *bd)  in setup_end_tag()  argument
212 	params->hdr.tag = ATAG_NONE;  in setup_end_tag()
213 	params->hdr.size = 0;  in setup_end_tag()
231 	if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len) {  in boot_prep_linux()
241 		setup_start_tag(gd->bd);  in boot_prep_linux()
245 			setup_commandline_tag(gd->bd, commandline);  in boot_prep_linux()
249 			setup_memory_tags(gd->bd);  in boot_prep_linux()
253 			 * a specified location. And set images->initrd_start &  in boot_prep_linux()
254 			 * images->initrd_end to relocated ramdisk's start/end  in boot_prep_linux()
255 			 * addresses. So use them instead of images->rd_start &  in boot_prep_linux()
256 			 * images->rd_end when possible.  in boot_prep_linux()
258 			if (images->initrd_start && images->initrd_end) {  in boot_prep_linux()
259 				setup_initrd_tag(gd->bd, images->initrd_start,  in boot_prep_linux()
260 						 images->initrd_end);  in boot_prep_linux()
261 			} else if (images->rd_start && images->rd_end) {  in boot_prep_linux()
262 				setup_initrd_tag(gd->bd, images->rd_start,  in boot_prep_linux()
263 						 images->rd_end);  in boot_prep_linux()
267 		setup_end_tag(gd->bd);  in boot_prep_linux()
269 		printf("FDT and ATAGS support not compiled in - hanging\n");  in boot_prep_linux()
309 		armv8_switch_to_el1(0, (u64)gd->bd->bi_arch_number,  in switch_to_el1()
330 				void *res2))images->ep;  in boot_jump_linux()
332 	debug("## Transferring control to Linux (at address %lx)...\n",  in boot_jump_linux()
344 		update_os_arch_secondary_cores(images->os.arch);  in boot_jump_linux()
347 		armv8_switch_to_el2((u64)images->ft_addr, 0, 0, 0,  in boot_jump_linux()
351 		    (images->os.arch == IH_ARCH_ARM))  in boot_jump_linux()
352 			armv8_switch_to_el2(0, (u64)gd->bd->bi_arch_number,  in boot_jump_linux()
353 					    (u64)images->ft_addr, 0,  in boot_jump_linux()
354 					    (u64)images->ep,  in boot_jump_linux()
357 			armv8_switch_to_el2((u64)images->ft_addr, 0, 0, 0,  in boot_jump_linux()
358 					    images->ep,  in boot_jump_linux()
363 	unsigned long machid = gd->bd->bi_arch_number;  in boot_jump_linux()
369 	kernel_entry = (void (*)(int, int, uint))images->ep;  in boot_jump_linux()
383 	debug("## Transferring control to Linux (at address %08lx)" \  in boot_jump_linux()
388 	if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len)  in boot_jump_linux()
389 		r2 = (unsigned long)images->ft_addr;  in boot_jump_linux()
391 		r2 = gd->bd->bi_boot_params;  in boot_jump_linux()
417 		return -1;  in do_bootm_linux()
440 	if (images->ft_addr) {  in boot_prep_vxworks()
441 		off = fdt_path_offset(images->ft_addr, "/memory");  in boot_prep_vxworks()
443 			if (arch_fixup_fdt(images->ft_addr))  in boot_prep_vxworks()
457 	/* ARM VxWorks requires device tree physical address to be passed */  in boot_jump_vxworks()
458 	((void (*)(void *))images->ep)(images->ft_addr);  in boot_jump_vxworks()