blob: 23b99a541cb477dc17cd44473aff3531d444c941 [file] [log] [blame]
Tom Rini83d290c2018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
Simon Schwarz0a672d42012-03-15 04:01:45 +00002/* Copyright (C) 2011
3 * Corscience GmbH & Co. KG - Simon Schwarz <schwarz@corscience.de>
4 * - Added prep subcommand support
5 * - Reorganized source - modeled after powerpc version
6 *
wdenkc6097192002-11-03 00:24:07 +00007 * (C) Copyright 2002
8 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
9 * Marius Groeger <mgroeger@sysgo.de>
10 *
11 * Copyright (C) 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl)
wdenkc6097192002-11-03 00:24:07 +000012 */
13
14#include <common.h>
Simon Glass52f24232020-05-10 11:40:00 -060015#include <bootstage.h>
wdenkc6097192002-11-03 00:24:07 +000016#include <command.h>
Simon Glass62270f42019-11-14 12:57:35 -070017#include <cpu_func.h>
Simon Glass9d922452017-05-17 17:18:03 -060018#include <dm.h>
Simon Glass4d72caa2020-05-10 11:40:01 -060019#include <lmb.h>
Simon Glassf7ae49f2020-05-10 11:40:05 -060020#include <log.h>
Simon Glass401d1c42020-10-30 21:38:53 -060021#include <asm/global_data.h>
Stefan Roese1b8220a2017-03-20 12:51:50 +010022#include <dm/root.h>
Simon Glass7b51b572019-08-01 09:46:52 -060023#include <env.h>
wdenkc6097192002-11-03 00:24:07 +000024#include <image.h>
Jean-Christophe PLAGNIOL-VILLARDa31e0912009-04-04 12:49:11 +020025#include <u-boot/zlib.h>
wdenkc6097192002-11-03 00:24:07 +000026#include <asm/byteorder.h>
Masahiro Yamadab08c8c42018-03-05 01:20:11 +090027#include <linux/libfdt.h>
Joe Hershberger0eb25b62015-03-22 17:08:59 -050028#include <mapmem.h>
John Rigby2d1916e2010-10-13 13:57:36 -060029#include <fdt_support.h>
Simon Schwarz0a672d42012-03-15 04:01:45 +000030#include <asm/bootm.h>
Marc Zyngierf510aea2014-07-12 14:24:03 +010031#include <asm/secure.h>
Pali Rohár89e6f132012-10-19 02:00:04 +000032#include <linux/compiler.h>
Eric Nelson8d196e52014-09-30 15:40:01 -070033#include <bootm.h>
34#include <vxworks.h>
Simon Glass90526e92020-05-10 11:39:56 -060035#include <asm/cache.h>
wdenkc6097192002-11-03 00:24:07 +000036
Jan Kiszka104d6fb2015-04-21 07:18:24 +020037#ifdef CONFIG_ARMV7_NONSEC
Andre Przywarabb975452013-09-19 18:06:43 +020038#include <asm/armv7.h>
39#endif
Simon Glassc45300b2017-05-17 08:22:59 -060040#include <asm/setup.h>
Andre Przywarabb975452013-09-19 18:06:43 +020041
Wolfgang Denkd87080b2006-03-31 18:32:53 +020042DECLARE_GLOBAL_DATA_PTR;
43
wdenkc6097192002-11-03 00:24:07 +000044static struct tag *params;
John Rigby2d1916e2010-10-13 13:57:36 -060045
Marek Vasut2359fa72021-05-29 13:34:32 +020046#ifndef CONFIG_ARM64
Simon Schwarz0a672d42012-03-15 04:01:45 +000047static ulong get_sp(void)
48{
49 ulong ret;
50
51 asm("mov %0, sp" : "=r"(ret) : );
52 return ret;
53}
54
John Rigby2d1916e2010-10-13 13:57:36 -060055void arch_lmb_reserve(struct lmb *lmb)
56{
Stephen Warren15751402018-01-05 13:04:54 -070057 ulong sp, bank_end;
58 int bank;
John Rigby2d1916e2010-10-13 13:57:36 -060059
60 /*
61 * Booting a (Linux) kernel image
62 *
63 * Allocate space for command line and board info - the
64 * address should be as high as possible within the reach of
65 * the kernel (see CONFIG_SYS_BOOTMAPSZ settings), but in unused
66 * memory, which means far enough below the current stack
67 * pointer.
68 */
69 sp = get_sp();
70 debug("## Current stack ends at 0x%08lx ", sp);
71
Rob Herringfcfa6962012-06-28 03:54:11 +000072 /* adjust sp by 4K to be safe */
73 sp -= 4096;
Stephen Warren15751402018-01-05 13:04:54 -070074 for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
Simon Goldschmidtf8878da2019-01-14 22:38:23 +010075 if (!gd->bd->bi_dram[bank].size ||
76 sp < gd->bd->bi_dram[bank].start)
Stephen Warren15751402018-01-05 13:04:54 -070077 continue;
Simon Goldschmidtf8878da2019-01-14 22:38:23 +010078 /* Watch out for RAM at end of address space! */
Stephen Warren15751402018-01-05 13:04:54 -070079 bank_end = gd->bd->bi_dram[bank].start +
Simon Goldschmidtf8878da2019-01-14 22:38:23 +010080 gd->bd->bi_dram[bank].size - 1;
81 if (sp > bank_end)
Stephen Warren15751402018-01-05 13:04:54 -070082 continue;
Patrice Chotard8ce1f102020-02-13 19:29:50 +010083 if (bank_end > gd->ram_top)
84 bank_end = gd->ram_top - 1;
85
Simon Goldschmidtf8878da2019-01-14 22:38:23 +010086 lmb_reserve(lmb, sp, bank_end - sp + 1);
Stephen Warren15751402018-01-05 13:04:54 -070087 break;
88 }
John Rigby2d1916e2010-10-13 13:57:36 -060089}
Marek Vasut2359fa72021-05-29 13:34:32 +020090#endif
John Rigby2d1916e2010-10-13 13:57:36 -060091
Alexander Grafb7b84102016-11-17 01:02:57 +010092__weak void board_quiesce_devices(void)
93{
94}
95
Simon Glassbce1b922013-06-19 21:15:10 -070096/**
97 * announce_and_cleanup() - Print message and prepare for kernel boot
98 *
99 * @fake: non-zero to do everything except actually boot
100 */
101static void announce_and_cleanup(int fake)
Simon Schwarz0a672d42012-03-15 04:01:45 +0000102{
Simon Schwarz0a672d42012-03-15 04:01:45 +0000103 bootstage_mark_name(BOOTSTAGE_ID_BOOTM_HANDOFF, "start_kernel");
Simon Glass94fd1312012-09-28 08:56:37 +0000104#ifdef CONFIG_BOOTSTAGE_FDT
Mela Custodio91290cf2014-02-20 00:16:56 +0900105 bootstage_fdt_add_report();
Simon Glass94fd1312012-09-28 08:56:37 +0000106#endif
Simon Schwarz0a672d42012-03-15 04:01:45 +0000107#ifdef CONFIG_BOOTSTAGE_REPORT
108 bootstage_report();
109#endif
110
111#ifdef CONFIG_USB_DEVICE
112 udc_disconnect();
113#endif
Alexander Grafb7b84102016-11-17 01:02:57 +0100114
115 board_quiesce_devices();
116
Keerthy6dad56d2019-02-20 18:17:22 +0530117 printf("\nStarting kernel ...%s\n\n", fake ?
118 "(fake run for tracing)" : "");
Stefan Roese1b8220a2017-03-20 12:51:50 +0100119 /*
120 * Call remove function of all devices with a removal flag set.
121 * This may be useful for last-stage operations, like cancelling
122 * of DMA operation or releasing device internal buffers.
123 */
Simon Glass6224dc92021-01-24 14:32:47 -0700124 dm_remove_devices_flags(DM_REMOVE_ACTIVE_ALL | DM_REMOVE_NON_VITAL);
125
126 /* Remove all active vital devices next */
Stefan Roese1b8220a2017-03-20 12:51:50 +0100127 dm_remove_devices_flags(DM_REMOVE_ACTIVE_ALL);
128
Simon Schwarz0a672d42012-03-15 04:01:45 +0000129 cleanup_before_linux();
130}
131
Masahiro Yamadab75d8dc2020-06-26 15:13:33 +0900132static void setup_start_tag (struct bd_info *bd)
wdenkc6097192002-11-03 00:24:07 +0000133{
Simon Schwarz0a672d42012-03-15 04:01:45 +0000134 params = (struct tag *)bd->bi_boot_params;
wdenkc6097192002-11-03 00:24:07 +0000135
wdenk5779d8d2003-12-06 23:55:10 +0000136 params->hdr.tag = ATAG_CORE;
137 params->hdr.size = tag_size (tag_core);
wdenkc6097192002-11-03 00:24:07 +0000138
wdenk5779d8d2003-12-06 23:55:10 +0000139 params->u.core.flags = 0;
140 params->u.core.pagesize = 0;
141 params->u.core.rootdev = 0;
wdenkc6097192002-11-03 00:24:07 +0000142
wdenk5779d8d2003-12-06 23:55:10 +0000143 params = tag_next (params);
wdenkc6097192002-11-03 00:24:07 +0000144}
wdenkc6097192002-11-03 00:24:07 +0000145
Masahiro Yamadab75d8dc2020-06-26 15:13:33 +0900146static void setup_memory_tags(struct bd_info *bd)
wdenkc6097192002-11-03 00:24:07 +0000147{
wdenk5779d8d2003-12-06 23:55:10 +0000148 int i;
wdenkc6097192002-11-03 00:24:07 +0000149
wdenk5779d8d2003-12-06 23:55:10 +0000150 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
151 params->hdr.tag = ATAG_MEM;
152 params->hdr.size = tag_size (tag_mem32);
wdenkc6097192002-11-03 00:24:07 +0000153
wdenk5779d8d2003-12-06 23:55:10 +0000154 params->u.mem.start = bd->bi_dram[i].start;
155 params->u.mem.size = bd->bi_dram[i].size;
wdenkc6097192002-11-03 00:24:07 +0000156
wdenk5779d8d2003-12-06 23:55:10 +0000157 params = tag_next (params);
158 }
wdenkc6097192002-11-03 00:24:07 +0000159}
160
Masahiro Yamadab75d8dc2020-06-26 15:13:33 +0900161static void setup_commandline_tag(struct bd_info *bd, char *commandline)
wdenkc6097192002-11-03 00:24:07 +0000162{
wdenk5779d8d2003-12-06 23:55:10 +0000163 char *p;
wdenkc6097192002-11-03 00:24:07 +0000164
wdenk109c0e32004-03-23 21:43:07 +0000165 if (!commandline)
166 return;
167
wdenk5779d8d2003-12-06 23:55:10 +0000168 /* eat leading white space */
169 for (p = commandline; *p == ' '; p++);
wdenkc6097192002-11-03 00:24:07 +0000170
wdenk5779d8d2003-12-06 23:55:10 +0000171 /* skip non-existent command lines so the kernel will still
172 * use its default command line.
173 */
174 if (*p == '\0')
175 return;
wdenkc6097192002-11-03 00:24:07 +0000176
wdenk5779d8d2003-12-06 23:55:10 +0000177 params->hdr.tag = ATAG_CMDLINE;
178 params->hdr.size =
179 (sizeof (struct tag_header) + strlen (p) + 1 + 4) >> 2;
wdenkc6097192002-11-03 00:24:07 +0000180
wdenk5779d8d2003-12-06 23:55:10 +0000181 strcpy (params->u.cmdline.cmdline, p);
wdenkc6097192002-11-03 00:24:07 +0000182
wdenk5779d8d2003-12-06 23:55:10 +0000183 params = tag_next (params);
wdenkc6097192002-11-03 00:24:07 +0000184}
wdenkc6097192002-11-03 00:24:07 +0000185
Masahiro Yamadab75d8dc2020-06-26 15:13:33 +0900186static void setup_initrd_tag(struct bd_info *bd, ulong initrd_start,
187 ulong initrd_end)
wdenkc6097192002-11-03 00:24:07 +0000188{
wdenk5779d8d2003-12-06 23:55:10 +0000189 /* an ATAG_INITRD node tells the kernel where the compressed
190 * ramdisk can be found. ATAG_RDIMG is a better name, actually.
191 */
wdenk498b8db2004-04-18 22:26:17 +0000192 params->hdr.tag = ATAG_INITRD2;
wdenk5779d8d2003-12-06 23:55:10 +0000193 params->hdr.size = tag_size (tag_initrd);
wdenkc6097192002-11-03 00:24:07 +0000194
wdenk5779d8d2003-12-06 23:55:10 +0000195 params->u.initrd.start = initrd_start;
196 params->u.initrd.size = initrd_end - initrd_start;
wdenkc6097192002-11-03 00:24:07 +0000197
wdenk5779d8d2003-12-06 23:55:10 +0000198 params = tag_next (params);
wdenkc6097192002-11-03 00:24:07 +0000199}
wdenkc6097192002-11-03 00:24:07 +0000200
Simon Glassc19d13b2013-05-08 08:06:02 +0000201static void setup_serial_tag(struct tag **tmp)
wdenk3a574cb2005-05-19 22:39:42 +0000202{
203 struct tag *params = *tmp;
204 struct tag_serialnr serialnr;
wdenk3a574cb2005-05-19 22:39:42 +0000205
206 get_board_serial(&serialnr);
207 params->hdr.tag = ATAG_SERIAL;
208 params->hdr.size = tag_size (tag_serialnr);
209 params->u.serialnr.low = serialnr.low;
210 params->u.serialnr.high= serialnr.high;
211 params = tag_next (params);
212 *tmp = params;
213}
wdenk3a574cb2005-05-19 22:39:42 +0000214
Simon Glassc19d13b2013-05-08 08:06:02 +0000215static void setup_revision_tag(struct tag **in_params)
wdenk289f9322005-01-12 00:15:14 +0000216{
217 u32 rev = 0;
wdenk289f9322005-01-12 00:15:14 +0000218
219 rev = get_board_rev();
wdenk289f9322005-01-12 00:15:14 +0000220 params->hdr.tag = ATAG_REVISION;
221 params->hdr.size = tag_size (tag_revision);
222 params->u.revision.rev = rev;
223 params = tag_next (params);
224}
wdenk289f9322005-01-12 00:15:14 +0000225
Masahiro Yamadab75d8dc2020-06-26 15:13:33 +0900226static void setup_end_tag(struct bd_info *bd)
wdenkc6097192002-11-03 00:24:07 +0000227{
wdenk5779d8d2003-12-06 23:55:10 +0000228 params->hdr.tag = ATAG_NONE;
229 params->hdr.size = 0;
wdenkc6097192002-11-03 00:24:07 +0000230}
231
Pali Rohár89e6f132012-10-19 02:00:04 +0000232__weak void setup_board_tags(struct tag **in_params) {}
233
Marc Zyngierf510aea2014-07-12 14:24:03 +0100234#ifdef CONFIG_ARM64
Andre Przywarabb975452013-09-19 18:06:43 +0200235static void do_nonsec_virt_switch(void)
236{
David Feng0ae76532013-12-14 11:47:35 +0800237 smp_kick_all_cpus();
York Sundcd468b2015-01-06 13:18:42 -0800238 dcache_disable(); /* flush cache before swtiching to EL2 */
Andre Przywarabb975452013-09-19 18:06:43 +0200239}
Marc Zyngierf510aea2014-07-12 14:24:03 +0100240#endif
Andre Przywarabb975452013-09-19 18:06:43 +0200241
Lokesh Vutla899a9de2019-10-07 13:52:15 +0530242__weak void board_prep_linux(bootm_headers_t *images) { }
243
Simon Schwarz0a672d42012-03-15 04:01:45 +0000244/* Subcommand: PREP */
245static void boot_prep_linux(bootm_headers_t *images)
246{
Simon Glass00caae62017-08-03 12:22:12 -0600247 char *commandline = env_get("bootargs");
Simon Schwarz0a672d42012-03-15 04:01:45 +0000248
Simon Glassc19d13b2013-05-08 08:06:02 +0000249 if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len) {
Simon Schwarz0a672d42012-03-15 04:01:45 +0000250#ifdef CONFIG_OF_LIBFDT
Simon Schwarz0a672d42012-03-15 04:01:45 +0000251 debug("using: FDT\n");
Simon Glass6caa1952013-05-08 08:06:03 +0000252 if (image_setup_linux(images)) {
Heinrich Schuchardt0ca7c4d2021-02-17 12:55:54 +0100253 panic("FDT creation failed!");
Simon Schwarz0a672d42012-03-15 04:01:45 +0000254 }
Simon Schwarz0a672d42012-03-15 04:01:45 +0000255#endif
Simon Glassc19d13b2013-05-08 08:06:02 +0000256 } else if (BOOTM_ENABLE_TAGS) {
Simon Schwarz0a672d42012-03-15 04:01:45 +0000257 debug("using: ATAGS\n");
258 setup_start_tag(gd->bd);
Simon Glassc19d13b2013-05-08 08:06:02 +0000259 if (BOOTM_ENABLE_SERIAL_TAG)
260 setup_serial_tag(&params);
261 if (BOOTM_ENABLE_CMDLINE_TAG)
262 setup_commandline_tag(gd->bd, commandline);
263 if (BOOTM_ENABLE_REVISION_TAG)
264 setup_revision_tag(&params);
265 if (BOOTM_ENABLE_MEMORY_TAGS)
266 setup_memory_tags(gd->bd);
267 if (BOOTM_ENABLE_INITRD_TAG) {
Jeffy Chenf7ee0712016-01-14 10:19:36 +0800268 /*
269 * In boot_ramdisk_high(), it may relocate ramdisk to
270 * a specified location. And set images->initrd_start &
271 * images->initrd_end to relocated ramdisk's start/end
272 * addresses. So use them instead of images->rd_start &
273 * images->rd_end when possible.
274 */
275 if (images->initrd_start && images->initrd_end) {
276 setup_initrd_tag(gd->bd, images->initrd_start,
277 images->initrd_end);
278 } else if (images->rd_start && images->rd_end) {
Simon Glassc19d13b2013-05-08 08:06:02 +0000279 setup_initrd_tag(gd->bd, images->rd_start,
280 images->rd_end);
281 }
282 }
Pali Rohár89e6f132012-10-19 02:00:04 +0000283 setup_board_tags(&params);
Simon Schwarz0a672d42012-03-15 04:01:45 +0000284 setup_end_tag(gd->bd);
Simon Glassc19d13b2013-05-08 08:06:02 +0000285 } else {
Heinrich Schuchardt0ca7c4d2021-02-17 12:55:54 +0100286 panic("FDT and ATAGS support not compiled in\n");
Simon Schwarz0a672d42012-03-15 04:01:45 +0000287 }
Lokesh Vutla899a9de2019-10-07 13:52:15 +0530288
289 board_prep_linux(images);
Simon Schwarz0a672d42012-03-15 04:01:45 +0000290}
291
Jon Medhurst \(Tixy\)f225d392016-06-23 13:37:32 +0100292__weak bool armv7_boot_nonsec_default(void)
293{
294#ifdef CONFIG_ARMV7_BOOT_SEC_DEFAULT
295 return false;
296#else
297 return true;
298#endif
299}
300
Jan Kiszka104d6fb2015-04-21 07:18:24 +0200301#ifdef CONFIG_ARMV7_NONSEC
Ian Campbell97a81962014-12-21 09:45:11 +0000302bool armv7_boot_nonsec(void)
Hans de Goede8bc347e2014-11-14 09:34:31 +0100303{
Simon Glass00caae62017-08-03 12:22:12 -0600304 char *s = env_get("bootm_boot_mode");
Jon Medhurst \(Tixy\)f225d392016-06-23 13:37:32 +0100305 bool nonsec = armv7_boot_nonsec_default();
Hans de Goede8bc347e2014-11-14 09:34:31 +0100306
307 if (s && !strcmp(s, "sec"))
308 nonsec = false;
309
310 if (s && !strcmp(s, "nonsec"))
311 nonsec = true;
312
313 return nonsec;
314}
315#endif
316
Alison Wangec6617c2016-11-10 10:49:03 +0800317#ifdef CONFIG_ARM64
Alison Wange2c18e42016-11-10 10:49:04 +0800318__weak void update_os_arch_secondary_cores(uint8_t os_arch)
319{
320}
321
Alison Wangec6617c2016-11-10 10:49:03 +0800322#ifdef CONFIG_ARMV8_SWITCH_TO_EL1
323static void switch_to_el1(void)
324{
325 if ((IH_ARCH_DEFAULT == IH_ARCH_ARM64) &&
326 (images.os.arch == IH_ARCH_ARM))
327 armv8_switch_to_el1(0, (u64)gd->bd->bi_arch_number,
Alison Wang7c5e1fe2017-01-17 09:39:17 +0800328 (u64)images.ft_addr, 0,
Alison Wangec6617c2016-11-10 10:49:03 +0800329 (u64)images.ep,
330 ES_TO_AARCH32);
331 else
Alison Wang7c5e1fe2017-01-17 09:39:17 +0800332 armv8_switch_to_el1((u64)images.ft_addr, 0, 0, 0,
Alison Wangec6617c2016-11-10 10:49:03 +0800333 images.ep,
334 ES_TO_AARCH64);
335}
336#endif
337#endif
338
Simon Schwarz0a672d42012-03-15 04:01:45 +0000339/* Subcommand: GO */
Simon Glassbce1b922013-06-19 21:15:10 -0700340static void boot_jump_linux(bootm_headers_t *images, int flag)
Simon Schwarz0a672d42012-03-15 04:01:45 +0000341{
David Feng0ae76532013-12-14 11:47:35 +0800342#ifdef CONFIG_ARM64
Tom Rini3f1b6be2014-08-14 06:42:35 -0400343 void (*kernel_entry)(void *fdt_addr, void *res0, void *res1,
344 void *res2);
David Feng0ae76532013-12-14 11:47:35 +0800345 int fake = (flag & BOOTM_STATE_OS_FAKE_GO);
346
Tom Rini3f1b6be2014-08-14 06:42:35 -0400347 kernel_entry = (void (*)(void *fdt_addr, void *res0, void *res1,
348 void *res2))images->ep;
David Feng0ae76532013-12-14 11:47:35 +0800349
350 debug("## Transferring control to Linux (at address %lx)...\n",
351 (ulong) kernel_entry);
352 bootstage_mark(BOOTSTAGE_ID_RUN_OS);
353
354 announce_and_cleanup(fake);
355
Marc Zyngierc19e0dd2014-07-12 14:23:58 +0100356 if (!fake) {
macro.wave.z@gmail.com9a561752016-12-08 11:58:25 +0800357#ifdef CONFIG_ARMV8_PSCI
358 armv8_setup_psci();
359#endif
Marc Zyngierc19e0dd2014-07-12 14:23:58 +0100360 do_nonsec_virt_switch();
Alison Wangec6617c2016-11-10 10:49:03 +0800361
Alison Wange2c18e42016-11-10 10:49:04 +0800362 update_os_arch_secondary_cores(images->os.arch);
363
Alison Wangec6617c2016-11-10 10:49:03 +0800364#ifdef CONFIG_ARMV8_SWITCH_TO_EL1
Alison Wang7c5e1fe2017-01-17 09:39:17 +0800365 armv8_switch_to_el2((u64)images->ft_addr, 0, 0, 0,
Alison Wangec6617c2016-11-10 10:49:03 +0800366 (u64)switch_to_el1, ES_TO_AARCH64);
367#else
368 if ((IH_ARCH_DEFAULT == IH_ARCH_ARM64) &&
369 (images->os.arch == IH_ARCH_ARM))
370 armv8_switch_to_el2(0, (u64)gd->bd->bi_arch_number,
Alison Wang7c5e1fe2017-01-17 09:39:17 +0800371 (u64)images->ft_addr, 0,
Alison Wangec6617c2016-11-10 10:49:03 +0800372 (u64)images->ep,
373 ES_TO_AARCH32);
374 else
Alison Wang7c5e1fe2017-01-17 09:39:17 +0800375 armv8_switch_to_el2((u64)images->ft_addr, 0, 0, 0,
Alison Wangec6617c2016-11-10 10:49:03 +0800376 images->ep,
377 ES_TO_AARCH64);
378#endif
Marc Zyngierc19e0dd2014-07-12 14:23:58 +0100379 }
David Feng0ae76532013-12-14 11:47:35 +0800380#else
Simon Schwarz0a672d42012-03-15 04:01:45 +0000381 unsigned long machid = gd->bd->bi_arch_number;
382 char *s;
383 void (*kernel_entry)(int zero, int arch, uint params);
Stephen Warren17239972012-04-19 11:34:00 +0000384 unsigned long r2;
Simon Glassbce1b922013-06-19 21:15:10 -0700385 int fake = (flag & BOOTM_STATE_OS_FAKE_GO);
Simon Schwarz0a672d42012-03-15 04:01:45 +0000386
387 kernel_entry = (void (*)(int, int, uint))images->ep;
Patrice Chotarddc89c6f2017-04-25 11:07:46 +0200388#ifdef CONFIG_CPU_V7M
389 ulong addr = (ulong)kernel_entry | 1;
390 kernel_entry = (void *)addr;
391#endif
Simon Glass00caae62017-08-03 12:22:12 -0600392 s = env_get("machid");
Simon Schwarz0a672d42012-03-15 04:01:45 +0000393 if (s) {
Peng Fanbc3c89b2015-11-24 16:54:20 +0800394 if (strict_strtoul(s, 16, &machid) < 0) {
395 debug("strict_strtoul failed!\n");
396 return;
397 }
Simon Schwarz0a672d42012-03-15 04:01:45 +0000398 printf("Using machid 0x%lx from environment\n", machid);
399 }
400
401 debug("## Transferring control to Linux (at address %08lx)" \
402 "...\n", (ulong) kernel_entry);
403 bootstage_mark(BOOTSTAGE_ID_RUN_OS);
Simon Glassbce1b922013-06-19 21:15:10 -0700404 announce_and_cleanup(fake);
Stephen Warren17239972012-04-19 11:34:00 +0000405
Simon Glassc19d13b2013-05-08 08:06:02 +0000406 if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len)
Stephen Warren17239972012-04-19 11:34:00 +0000407 r2 = (unsigned long)images->ft_addr;
408 else
Stephen Warren17239972012-04-19 11:34:00 +0000409 r2 = gd->bd->bi_boot_params;
410
Marc Zyngierc19e0dd2014-07-12 14:23:58 +0100411 if (!fake) {
Jan Kiszka104d6fb2015-04-21 07:18:24 +0200412#ifdef CONFIG_ARMV7_NONSEC
Ian Campbell97a81962014-12-21 09:45:11 +0000413 if (armv7_boot_nonsec()) {
Hans de Goede8bc347e2014-11-14 09:34:31 +0100414 armv7_init_nonsec();
415 secure_ram_addr(_do_nonsec_entry)(kernel_entry,
416 0, machid, r2);
417 } else
Marc Zyngierf510aea2014-07-12 14:24:03 +0100418#endif
Hans de Goede8bc347e2014-11-14 09:34:31 +0100419 kernel_entry(0, machid, r2);
Marc Zyngierc19e0dd2014-07-12 14:23:58 +0100420 }
David Feng0ae76532013-12-14 11:47:35 +0800421#endif
Simon Schwarz0a672d42012-03-15 04:01:45 +0000422}
423
424/* Main Entry point for arm bootm implementation
425 *
426 * Modeled after the powerpc implementation
427 * DIFFERENCE: Instead of calling prep and go at the end
428 * they are called if subcommand is equal 0.
429 */
Simon Glass09140112020-05-10 11:40:03 -0600430int do_bootm_linux(int flag, int argc, char *const argv[],
Eric Nelson8d196e52014-09-30 15:40:01 -0700431 bootm_headers_t *images)
Simon Schwarz0a672d42012-03-15 04:01:45 +0000432{
433 /* No need for those on ARM */
434 if (flag & BOOTM_STATE_OS_BD_T || flag & BOOTM_STATE_OS_CMDLINE)
435 return -1;
436
437 if (flag & BOOTM_STATE_OS_PREP) {
438 boot_prep_linux(images);
439 return 0;
440 }
441
Simon Glassbce1b922013-06-19 21:15:10 -0700442 if (flag & (BOOTM_STATE_OS_GO | BOOTM_STATE_OS_FAKE_GO)) {
443 boot_jump_linux(images, flag);
Simon Schwarz0a672d42012-03-15 04:01:45 +0000444 return 0;
445 }
446
447 boot_prep_linux(images);
Simon Glassbce1b922013-06-19 21:15:10 -0700448 boot_jump_linux(images, flag);
Simon Schwarz0a672d42012-03-15 04:01:45 +0000449 return 0;
John Rigby2d1916e2010-10-13 13:57:36 -0600450}
Marek Vasut44f074c2012-03-14 21:52:45 +0000451
Miao Yan871a57b2013-11-28 17:51:38 +0800452#if defined(CONFIG_BOOTM_VXWORKS)
453void boot_prep_vxworks(bootm_headers_t *images)
454{
455#if defined(CONFIG_OF_LIBFDT)
456 int off;
457
458 if (images->ft_addr) {
459 off = fdt_path_offset(images->ft_addr, "/memory");
Hannes Schmelzer7f1cb1d2018-05-04 10:49:11 +0200460 if (off > 0) {
Ma Haijune29607e2014-07-12 14:24:06 +0100461 if (arch_fixup_fdt(images->ft_addr))
Miao Yan871a57b2013-11-28 17:51:38 +0800462 puts("## WARNING: fixup memory failed!\n");
463 }
464 }
465#endif
466 cleanup_before_linux();
467}
468void boot_jump_vxworks(bootm_headers_t *images)
469{
Vasyl Vavrychuk3194daa2018-04-10 12:36:36 +0300470#if defined(CONFIG_ARM64) && defined(CONFIG_ARMV8_PSCI)
471 armv8_setup_psci();
472 smp_kick_all_cpus();
473#endif
474
Miao Yan871a57b2013-11-28 17:51:38 +0800475 /* ARM VxWorks requires device tree physical address to be passed */
476 ((void (*)(void *))images->ep)(images->ft_addr);
477}
478#endif