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Simon Schwarz0a672d42012-03-15 04:01:45 +00001/* Copyright (C) 2011
2 * Corscience GmbH & Co. KG - Simon Schwarz <schwarz@corscience.de>
3 * - Added prep subcommand support
4 * - Reorganized source - modeled after powerpc version
5 *
wdenkc6097192002-11-03 00:24:07 +00006 * (C) Copyright 2002
7 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
8 * Marius Groeger <mgroeger@sysgo.de>
9 *
10 * Copyright (C) 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl)
11 *
Wolfgang Denk1a459662013-07-08 09:37:19 +020012 * SPDX-License-Identifier: GPL-2.0+
wdenkc6097192002-11-03 00:24:07 +000013 */
14
15#include <common.h>
16#include <command.h>
wdenkc6097192002-11-03 00:24:07 +000017#include <image.h>
Jean-Christophe PLAGNIOL-VILLARDa31e0912009-04-04 12:49:11 +020018#include <u-boot/zlib.h>
wdenkc6097192002-11-03 00:24:07 +000019#include <asm/byteorder.h>
John Rigby2d1916e2010-10-13 13:57:36 -060020#include <libfdt.h>
Joe Hershberger0eb25b62015-03-22 17:08:59 -050021#include <mapmem.h>
John Rigby2d1916e2010-10-13 13:57:36 -060022#include <fdt_support.h>
Simon Schwarz0a672d42012-03-15 04:01:45 +000023#include <asm/bootm.h>
Marc Zyngierf510aea2014-07-12 14:24:03 +010024#include <asm/secure.h>
Pali Rohár89e6f132012-10-19 02:00:04 +000025#include <linux/compiler.h>
Eric Nelson8d196e52014-09-30 15:40:01 -070026#include <bootm.h>
27#include <vxworks.h>
wdenkc6097192002-11-03 00:24:07 +000028
Andre Przywarad4296882013-09-19 18:06:45 +020029#if defined(CONFIG_ARMV7_NONSEC) || defined(CONFIG_ARMV7_VIRT)
Andre Przywarabb975452013-09-19 18:06:43 +020030#include <asm/armv7.h>
31#endif
32
Wolfgang Denkd87080b2006-03-31 18:32:53 +020033DECLARE_GLOBAL_DATA_PTR;
34
wdenkc6097192002-11-03 00:24:07 +000035static struct tag *params;
John Rigby2d1916e2010-10-13 13:57:36 -060036
Simon Schwarz0a672d42012-03-15 04:01:45 +000037static ulong get_sp(void)
38{
39 ulong ret;
40
41 asm("mov %0, sp" : "=r"(ret) : );
42 return ret;
43}
44
John Rigby2d1916e2010-10-13 13:57:36 -060045void arch_lmb_reserve(struct lmb *lmb)
46{
47 ulong sp;
48
49 /*
50 * Booting a (Linux) kernel image
51 *
52 * Allocate space for command line and board info - the
53 * address should be as high as possible within the reach of
54 * the kernel (see CONFIG_SYS_BOOTMAPSZ settings), but in unused
55 * memory, which means far enough below the current stack
56 * pointer.
57 */
58 sp = get_sp();
59 debug("## Current stack ends at 0x%08lx ", sp);
60
Rob Herringfcfa6962012-06-28 03:54:11 +000061 /* adjust sp by 4K to be safe */
62 sp -= 4096;
John Rigby2d1916e2010-10-13 13:57:36 -060063 lmb_reserve(lmb, sp,
64 gd->bd->bi_dram[0].start + gd->bd->bi_dram[0].size - sp);
65}
66
Simon Glassbce1b922013-06-19 21:15:10 -070067/**
68 * announce_and_cleanup() - Print message and prepare for kernel boot
69 *
70 * @fake: non-zero to do everything except actually boot
71 */
72static void announce_and_cleanup(int fake)
Simon Schwarz0a672d42012-03-15 04:01:45 +000073{
Simon Glassbce1b922013-06-19 21:15:10 -070074 printf("\nStarting kernel ...%s\n\n", fake ?
75 "(fake run for tracing)" : "");
Simon Schwarz0a672d42012-03-15 04:01:45 +000076 bootstage_mark_name(BOOTSTAGE_ID_BOOTM_HANDOFF, "start_kernel");
Simon Glass94fd1312012-09-28 08:56:37 +000077#ifdef CONFIG_BOOTSTAGE_FDT
Mela Custodio91290cf2014-02-20 00:16:56 +090078 bootstage_fdt_add_report();
Simon Glass94fd1312012-09-28 08:56:37 +000079#endif
Simon Schwarz0a672d42012-03-15 04:01:45 +000080#ifdef CONFIG_BOOTSTAGE_REPORT
81 bootstage_report();
82#endif
83
84#ifdef CONFIG_USB_DEVICE
85 udc_disconnect();
86#endif
87 cleanup_before_linux();
88}
89
wdenk5779d8d2003-12-06 23:55:10 +000090static void setup_start_tag (bd_t *bd)
wdenkc6097192002-11-03 00:24:07 +000091{
Simon Schwarz0a672d42012-03-15 04:01:45 +000092 params = (struct tag *)bd->bi_boot_params;
wdenkc6097192002-11-03 00:24:07 +000093
wdenk5779d8d2003-12-06 23:55:10 +000094 params->hdr.tag = ATAG_CORE;
95 params->hdr.size = tag_size (tag_core);
wdenkc6097192002-11-03 00:24:07 +000096
wdenk5779d8d2003-12-06 23:55:10 +000097 params->u.core.flags = 0;
98 params->u.core.pagesize = 0;
99 params->u.core.rootdev = 0;
wdenkc6097192002-11-03 00:24:07 +0000100
wdenk5779d8d2003-12-06 23:55:10 +0000101 params = tag_next (params);
wdenkc6097192002-11-03 00:24:07 +0000102}
wdenkc6097192002-11-03 00:24:07 +0000103
Simon Schwarz0a672d42012-03-15 04:01:45 +0000104static void setup_memory_tags(bd_t *bd)
wdenkc6097192002-11-03 00:24:07 +0000105{
wdenk5779d8d2003-12-06 23:55:10 +0000106 int i;
wdenkc6097192002-11-03 00:24:07 +0000107
wdenk5779d8d2003-12-06 23:55:10 +0000108 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
109 params->hdr.tag = ATAG_MEM;
110 params->hdr.size = tag_size (tag_mem32);
wdenkc6097192002-11-03 00:24:07 +0000111
wdenk5779d8d2003-12-06 23:55:10 +0000112 params->u.mem.start = bd->bi_dram[i].start;
113 params->u.mem.size = bd->bi_dram[i].size;
wdenkc6097192002-11-03 00:24:07 +0000114
wdenk5779d8d2003-12-06 23:55:10 +0000115 params = tag_next (params);
116 }
wdenkc6097192002-11-03 00:24:07 +0000117}
118
Simon Schwarz0a672d42012-03-15 04:01:45 +0000119static void setup_commandline_tag(bd_t *bd, char *commandline)
wdenkc6097192002-11-03 00:24:07 +0000120{
wdenk5779d8d2003-12-06 23:55:10 +0000121 char *p;
wdenkc6097192002-11-03 00:24:07 +0000122
wdenk109c0e32004-03-23 21:43:07 +0000123 if (!commandline)
124 return;
125
wdenk5779d8d2003-12-06 23:55:10 +0000126 /* eat leading white space */
127 for (p = commandline; *p == ' '; p++);
wdenkc6097192002-11-03 00:24:07 +0000128
wdenk5779d8d2003-12-06 23:55:10 +0000129 /* skip non-existent command lines so the kernel will still
130 * use its default command line.
131 */
132 if (*p == '\0')
133 return;
wdenkc6097192002-11-03 00:24:07 +0000134
wdenk5779d8d2003-12-06 23:55:10 +0000135 params->hdr.tag = ATAG_CMDLINE;
136 params->hdr.size =
137 (sizeof (struct tag_header) + strlen (p) + 1 + 4) >> 2;
wdenkc6097192002-11-03 00:24:07 +0000138
wdenk5779d8d2003-12-06 23:55:10 +0000139 strcpy (params->u.cmdline.cmdline, p);
wdenkc6097192002-11-03 00:24:07 +0000140
wdenk5779d8d2003-12-06 23:55:10 +0000141 params = tag_next (params);
wdenkc6097192002-11-03 00:24:07 +0000142}
wdenkc6097192002-11-03 00:24:07 +0000143
Simon Schwarz0a672d42012-03-15 04:01:45 +0000144static void setup_initrd_tag(bd_t *bd, ulong initrd_start, ulong initrd_end)
wdenkc6097192002-11-03 00:24:07 +0000145{
wdenk5779d8d2003-12-06 23:55:10 +0000146 /* an ATAG_INITRD node tells the kernel where the compressed
147 * ramdisk can be found. ATAG_RDIMG is a better name, actually.
148 */
wdenk498b8db2004-04-18 22:26:17 +0000149 params->hdr.tag = ATAG_INITRD2;
wdenk5779d8d2003-12-06 23:55:10 +0000150 params->hdr.size = tag_size (tag_initrd);
wdenkc6097192002-11-03 00:24:07 +0000151
wdenk5779d8d2003-12-06 23:55:10 +0000152 params->u.initrd.start = initrd_start;
153 params->u.initrd.size = initrd_end - initrd_start;
wdenkc6097192002-11-03 00:24:07 +0000154
wdenk5779d8d2003-12-06 23:55:10 +0000155 params = tag_next (params);
wdenkc6097192002-11-03 00:24:07 +0000156}
wdenkc6097192002-11-03 00:24:07 +0000157
Simon Glassc19d13b2013-05-08 08:06:02 +0000158static void setup_serial_tag(struct tag **tmp)
wdenk3a574cb2005-05-19 22:39:42 +0000159{
160 struct tag *params = *tmp;
161 struct tag_serialnr serialnr;
wdenk3a574cb2005-05-19 22:39:42 +0000162
163 get_board_serial(&serialnr);
164 params->hdr.tag = ATAG_SERIAL;
165 params->hdr.size = tag_size (tag_serialnr);
166 params->u.serialnr.low = serialnr.low;
167 params->u.serialnr.high= serialnr.high;
168 params = tag_next (params);
169 *tmp = params;
170}
wdenk3a574cb2005-05-19 22:39:42 +0000171
Simon Glassc19d13b2013-05-08 08:06:02 +0000172static void setup_revision_tag(struct tag **in_params)
wdenk289f9322005-01-12 00:15:14 +0000173{
174 u32 rev = 0;
wdenk289f9322005-01-12 00:15:14 +0000175
176 rev = get_board_rev();
wdenk289f9322005-01-12 00:15:14 +0000177 params->hdr.tag = ATAG_REVISION;
178 params->hdr.size = tag_size (tag_revision);
179 params->u.revision.rev = rev;
180 params = tag_next (params);
181}
wdenk289f9322005-01-12 00:15:14 +0000182
Simon Schwarz0a672d42012-03-15 04:01:45 +0000183static void setup_end_tag(bd_t *bd)
wdenkc6097192002-11-03 00:24:07 +0000184{
wdenk5779d8d2003-12-06 23:55:10 +0000185 params->hdr.tag = ATAG_NONE;
186 params->hdr.size = 0;
wdenkc6097192002-11-03 00:24:07 +0000187}
188
Pali Rohár89e6f132012-10-19 02:00:04 +0000189__weak void setup_board_tags(struct tag **in_params) {}
190
Marc Zyngierf510aea2014-07-12 14:24:03 +0100191#ifdef CONFIG_ARM64
Andre Przywarabb975452013-09-19 18:06:43 +0200192static void do_nonsec_virt_switch(void)
193{
David Feng0ae76532013-12-14 11:47:35 +0800194 smp_kick_all_cpus();
York Sundcd468b2015-01-06 13:18:42 -0800195 dcache_disable(); /* flush cache before swtiching to EL2 */
David Feng0ae76532013-12-14 11:47:35 +0800196 armv8_switch_to_el2();
197#ifdef CONFIG_ARMV8_SWITCH_TO_EL1
198 armv8_switch_to_el1();
199#endif
Andre Przywarabb975452013-09-19 18:06:43 +0200200}
Marc Zyngierf510aea2014-07-12 14:24:03 +0100201#endif
Andre Przywarabb975452013-09-19 18:06:43 +0200202
Simon Schwarz0a672d42012-03-15 04:01:45 +0000203/* Subcommand: PREP */
204static void boot_prep_linux(bootm_headers_t *images)
205{
Simon Schwarz0a672d42012-03-15 04:01:45 +0000206 char *commandline = getenv("bootargs");
Simon Schwarz0a672d42012-03-15 04:01:45 +0000207
Simon Glassc19d13b2013-05-08 08:06:02 +0000208 if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len) {
Simon Schwarz0a672d42012-03-15 04:01:45 +0000209#ifdef CONFIG_OF_LIBFDT
Simon Schwarz0a672d42012-03-15 04:01:45 +0000210 debug("using: FDT\n");
Simon Glass6caa1952013-05-08 08:06:03 +0000211 if (image_setup_linux(images)) {
Simon Schwarz0a672d42012-03-15 04:01:45 +0000212 printf("FDT creation failed! hanging...");
213 hang();
214 }
Simon Schwarz0a672d42012-03-15 04:01:45 +0000215#endif
Simon Glassc19d13b2013-05-08 08:06:02 +0000216 } else if (BOOTM_ENABLE_TAGS) {
Simon Schwarz0a672d42012-03-15 04:01:45 +0000217 debug("using: ATAGS\n");
218 setup_start_tag(gd->bd);
Simon Glassc19d13b2013-05-08 08:06:02 +0000219 if (BOOTM_ENABLE_SERIAL_TAG)
220 setup_serial_tag(&params);
221 if (BOOTM_ENABLE_CMDLINE_TAG)
222 setup_commandline_tag(gd->bd, commandline);
223 if (BOOTM_ENABLE_REVISION_TAG)
224 setup_revision_tag(&params);
225 if (BOOTM_ENABLE_MEMORY_TAGS)
226 setup_memory_tags(gd->bd);
227 if (BOOTM_ENABLE_INITRD_TAG) {
228 if (images->rd_start && images->rd_end) {
229 setup_initrd_tag(gd->bd, images->rd_start,
230 images->rd_end);
231 }
232 }
Pali Rohár89e6f132012-10-19 02:00:04 +0000233 setup_board_tags(&params);
Simon Schwarz0a672d42012-03-15 04:01:45 +0000234 setup_end_tag(gd->bd);
Simon Glassc19d13b2013-05-08 08:06:02 +0000235 } else {
Simon Schwarz0a672d42012-03-15 04:01:45 +0000236 printf("FDT and ATAGS support not compiled in - hanging\n");
237 hang();
Simon Schwarz0a672d42012-03-15 04:01:45 +0000238 }
239}
240
Hans de Goede8bc347e2014-11-14 09:34:31 +0100241#if defined(CONFIG_ARMV7_NONSEC) || defined(CONFIG_ARMV7_VIRT)
Ian Campbell97a81962014-12-21 09:45:11 +0000242bool armv7_boot_nonsec(void)
Hans de Goede8bc347e2014-11-14 09:34:31 +0100243{
244 char *s = getenv("bootm_boot_mode");
245#ifdef CONFIG_ARMV7_BOOT_SEC_DEFAULT
246 bool nonsec = false;
247#else
248 bool nonsec = true;
249#endif
250
251 if (s && !strcmp(s, "sec"))
252 nonsec = false;
253
254 if (s && !strcmp(s, "nonsec"))
255 nonsec = true;
256
257 return nonsec;
258}
259#endif
260
Simon Schwarz0a672d42012-03-15 04:01:45 +0000261/* Subcommand: GO */
Simon Glassbce1b922013-06-19 21:15:10 -0700262static void boot_jump_linux(bootm_headers_t *images, int flag)
Simon Schwarz0a672d42012-03-15 04:01:45 +0000263{
David Feng0ae76532013-12-14 11:47:35 +0800264#ifdef CONFIG_ARM64
Tom Rini3f1b6be2014-08-14 06:42:35 -0400265 void (*kernel_entry)(void *fdt_addr, void *res0, void *res1,
266 void *res2);
David Feng0ae76532013-12-14 11:47:35 +0800267 int fake = (flag & BOOTM_STATE_OS_FAKE_GO);
268
Tom Rini3f1b6be2014-08-14 06:42:35 -0400269 kernel_entry = (void (*)(void *fdt_addr, void *res0, void *res1,
270 void *res2))images->ep;
David Feng0ae76532013-12-14 11:47:35 +0800271
272 debug("## Transferring control to Linux (at address %lx)...\n",
273 (ulong) kernel_entry);
274 bootstage_mark(BOOTSTAGE_ID_RUN_OS);
275
276 announce_and_cleanup(fake);
277
Marc Zyngierc19e0dd2014-07-12 14:23:58 +0100278 if (!fake) {
279 do_nonsec_virt_switch();
Tom Rini3f1b6be2014-08-14 06:42:35 -0400280 kernel_entry(images->ft_addr, NULL, NULL, NULL);
Marc Zyngierc19e0dd2014-07-12 14:23:58 +0100281 }
David Feng0ae76532013-12-14 11:47:35 +0800282#else
Simon Schwarz0a672d42012-03-15 04:01:45 +0000283 unsigned long machid = gd->bd->bi_arch_number;
284 char *s;
285 void (*kernel_entry)(int zero, int arch, uint params);
Stephen Warren17239972012-04-19 11:34:00 +0000286 unsigned long r2;
Simon Glassbce1b922013-06-19 21:15:10 -0700287 int fake = (flag & BOOTM_STATE_OS_FAKE_GO);
Simon Schwarz0a672d42012-03-15 04:01:45 +0000288
289 kernel_entry = (void (*)(int, int, uint))images->ep;
290
291 s = getenv("machid");
292 if (s) {
293 strict_strtoul(s, 16, &machid);
294 printf("Using machid 0x%lx from environment\n", machid);
295 }
296
297 debug("## Transferring control to Linux (at address %08lx)" \
298 "...\n", (ulong) kernel_entry);
299 bootstage_mark(BOOTSTAGE_ID_RUN_OS);
Simon Glassbce1b922013-06-19 21:15:10 -0700300 announce_and_cleanup(fake);
Stephen Warren17239972012-04-19 11:34:00 +0000301
Simon Glassc19d13b2013-05-08 08:06:02 +0000302 if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len)
Stephen Warren17239972012-04-19 11:34:00 +0000303 r2 = (unsigned long)images->ft_addr;
304 else
Stephen Warren17239972012-04-19 11:34:00 +0000305 r2 = gd->bd->bi_boot_params;
306
Marc Zyngierc19e0dd2014-07-12 14:23:58 +0100307 if (!fake) {
Marc Zyngierf510aea2014-07-12 14:24:03 +0100308#if defined(CONFIG_ARMV7_NONSEC) || defined(CONFIG_ARMV7_VIRT)
Ian Campbell97a81962014-12-21 09:45:11 +0000309 if (armv7_boot_nonsec()) {
Hans de Goede8bc347e2014-11-14 09:34:31 +0100310 armv7_init_nonsec();
311 secure_ram_addr(_do_nonsec_entry)(kernel_entry,
312 0, machid, r2);
313 } else
Marc Zyngierf510aea2014-07-12 14:24:03 +0100314#endif
Hans de Goede8bc347e2014-11-14 09:34:31 +0100315 kernel_entry(0, machid, r2);
Marc Zyngierc19e0dd2014-07-12 14:23:58 +0100316 }
David Feng0ae76532013-12-14 11:47:35 +0800317#endif
Simon Schwarz0a672d42012-03-15 04:01:45 +0000318}
319
320/* Main Entry point for arm bootm implementation
321 *
322 * Modeled after the powerpc implementation
323 * DIFFERENCE: Instead of calling prep and go at the end
324 * they are called if subcommand is equal 0.
325 */
Eric Nelson8d196e52014-09-30 15:40:01 -0700326int do_bootm_linux(int flag, int argc, char * const argv[],
327 bootm_headers_t *images)
Simon Schwarz0a672d42012-03-15 04:01:45 +0000328{
329 /* No need for those on ARM */
330 if (flag & BOOTM_STATE_OS_BD_T || flag & BOOTM_STATE_OS_CMDLINE)
331 return -1;
332
333 if (flag & BOOTM_STATE_OS_PREP) {
334 boot_prep_linux(images);
335 return 0;
336 }
337
Simon Glassbce1b922013-06-19 21:15:10 -0700338 if (flag & (BOOTM_STATE_OS_GO | BOOTM_STATE_OS_FAKE_GO)) {
339 boot_jump_linux(images, flag);
Simon Schwarz0a672d42012-03-15 04:01:45 +0000340 return 0;
341 }
342
343 boot_prep_linux(images);
Simon Glassbce1b922013-06-19 21:15:10 -0700344 boot_jump_linux(images, flag);
Simon Schwarz0a672d42012-03-15 04:01:45 +0000345 return 0;
John Rigby2d1916e2010-10-13 13:57:36 -0600346}
Marek Vasut44f074c2012-03-14 21:52:45 +0000347
348#ifdef CONFIG_CMD_BOOTZ
349
350struct zimage_header {
351 uint32_t code[9];
352 uint32_t zi_magic;
353 uint32_t zi_start;
354 uint32_t zi_end;
355};
356
357#define LINUX_ARM_ZIMAGE_MAGIC 0x016f2818
358
Simon Glassa5266d62013-07-04 13:26:10 -0700359int bootz_setup(ulong image, ulong *start, ulong *end)
Marek Vasut44f074c2012-03-14 21:52:45 +0000360{
Simon Glassa5266d62013-07-04 13:26:10 -0700361 struct zimage_header *zi;
Marek Vasut44f074c2012-03-14 21:52:45 +0000362
Simon Glassa5266d62013-07-04 13:26:10 -0700363 zi = (struct zimage_header *)map_sysmem(image, 0);
Marek Vasut44f074c2012-03-14 21:52:45 +0000364 if (zi->zi_magic != LINUX_ARM_ZIMAGE_MAGIC) {
365 puts("Bad Linux ARM zImage magic!\n");
366 return 1;
367 }
368
Simon Glassa5266d62013-07-04 13:26:10 -0700369 *start = zi->zi_start;
370 *end = zi->zi_end;
Marek Vasut44f074c2012-03-14 21:52:45 +0000371
Simon Glassa5266d62013-07-04 13:26:10 -0700372 printf("Kernel image @ %#08lx [ %#08lx - %#08lx ]\n", image, *start,
373 *end);
Marek Vasut44f074c2012-03-14 21:52:45 +0000374
375 return 0;
376}
Simon Glassa5266d62013-07-04 13:26:10 -0700377
Marek Vasut44f074c2012-03-14 21:52:45 +0000378#endif /* CONFIG_CMD_BOOTZ */
Miao Yan871a57b2013-11-28 17:51:38 +0800379
380#if defined(CONFIG_BOOTM_VXWORKS)
381void boot_prep_vxworks(bootm_headers_t *images)
382{
383#if defined(CONFIG_OF_LIBFDT)
384 int off;
385
386 if (images->ft_addr) {
387 off = fdt_path_offset(images->ft_addr, "/memory");
388 if (off < 0) {
Ma Haijune29607e2014-07-12 14:24:06 +0100389 if (arch_fixup_fdt(images->ft_addr))
Miao Yan871a57b2013-11-28 17:51:38 +0800390 puts("## WARNING: fixup memory failed!\n");
391 }
392 }
393#endif
394 cleanup_before_linux();
395}
396void boot_jump_vxworks(bootm_headers_t *images)
397{
398 /* ARM VxWorks requires device tree physical address to be passed */
399 ((void (*)(void *))images->ep)(images->ft_addr);
400}
401#endif