Gitiles
Code Review Sign In
git01.mediatek.com / filogic / uboot / f0cbbc913692a4a13ffb65a63354fa8eb7db2b45 / . / arch / m68k / lib / bootm.c
blob: 3dcff8076e3cbb1e422afa94f66c3ea2cc8ee8ca [file] [log] [blame]
Tom Rini10e47792018-05-06 17:58:06 -0400[diff] [blame]1// SPDX-License-Identifier: GPL-2.0+
wdenkabf7a7c2003-12-08 01:34:36 +0000[diff] [blame]2/*
3 * (C) Copyright 2003
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
wdenkabf7a7c2003-12-08 01:34:36 +0000[diff] [blame]5 */
6
Simon Glass0726d9d2023-12-15 20:14:13 -0700[diff] [blame]7#include <bootm.h>
Simon Glass1ea97892020-05-10 11:40:00 -0600[diff] [blame]8#include <bootstage.h>
wdenkabf7a7c2003-12-08 01:34:36 +0000[diff] [blame]9#include <command.h>
Simon Glass0af6e2d2019-08-01 09:46:52 -0600[diff] [blame]10#include <env.h>
wdenkabf7a7c2003-12-08 01:34:36 +0000[diff] [blame]11#include <image.h>
Simon Glass0f2af882020-05-10 11:40:05 -0600[diff] [blame]12#include <log.h>
Simon Glass3ba929a2020-10-30 21:38:53 -0600[diff] [blame]13#include <asm/global_data.h>
Jean-Christophe PLAGNIOL-VILLARD6bb94492009-04-04 12:49:11 +0200[diff] [blame]14#include <u-boot/zlib.h>
TsiChungLiewfc3ca3b62007-08-16 15:05:11 -0500[diff] [blame]15#include <bzlib.h>
TsiChungLiew890adcb2007-10-25 17:14:00 -0500[diff] [blame]16#include <watchdog.h>
wdenkabf7a7c2003-12-08 01:34:36 +0000[diff] [blame]17#include <asm/byteorder.h>
Marian Balakowicz2efc2642008-01-31 13:58:13 +0100[diff] [blame]18#ifdef CONFIG_SHOW_BOOT_PROGRESS
19# include <status_led.h>
20#endif
wdenkabf7a7c2003-12-08 01:34:36 +0000[diff] [blame]21
Wolfgang Denk6405a152006-03-31 18:32:53 +0200[diff] [blame]22DECLARE_GLOBAL_DATA_PTR;
23
wdenkabf7a7c2003-12-08 01:34:36 +0000[diff] [blame]24#define PHYSADDR(x) x
25
wdenke65527f2004-02-12 00:47:09 +0000[diff] [blame]26#define LINUX_MAX_ENVS 256
27#define LINUX_MAX_ARGS 256
wdenkabf7a7c2003-12-08 01:34:36 +0000[diff] [blame]28
Masahiro Yamadaf7ed78b2020-06-26 15:13:33 +0900[diff] [blame]29static void set_clocks_in_mhz (struct bd_info *kbd);
Marian Balakowicz9c701e82008-01-31 13:57:17 +0100[diff] [blame]30
Simon Glass0726d9d2023-12-15 20:14:13 -0700[diff] [blame]31int do_bootm_linux(int flag, struct bootm_info *bmi)
Kumar Galab02d7222008-10-16 21:52:08 -0500[diff] [blame]32{
Simon Glass0726d9d2023-12-15 20:14:13 -0700[diff] [blame]33 struct bootm_headers *images = bmi->images;
Kumar Galab02d7222008-10-16 21:52:08 -0500[diff] [blame]34 int ret;
Masahiro Yamadaf7ed78b2020-06-26 15:13:33 +0900[diff] [blame]35 struct bd_info *kbd;
36 void (*kernel) (struct bd_info *, ulong, ulong, ulong, ulong);
Kumar Galab02d7222008-10-16 21:52:08 -0500[diff] [blame]37
Andreas Bießmannda233ce2013-07-02 13:57:44 +0200[diff] [blame]38 /*
39 * allow the PREP bootm subcommand, it is required for bootm to work
40 */
41 if (flag & BOOTM_STATE_OS_PREP)
42 return 0;
43
Kumar Gala18178bc2008-10-21 17:25:45 -0500[diff] [blame]44 if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
45 return 1;
46
Marian Balakowicz2efc2642008-01-31 13:58:13 +0100[diff] [blame]47 /* allocate space for kernel copy of board info */
Sughosh Ganu291bf9c2024-08-26 17:29:18 +0530[diff] [blame]48 ret = boot_get_kbd(&kbd);
Kumar Galab937bb72008-02-27 21:51:49 -0600[diff] [blame]49 if (ret) {
50 puts("ERROR with allocation of kernel bd\n");
51 goto error;
52 }
Marian Balakowicz2efc2642008-01-31 13:58:13 +0100[diff] [blame]53 set_clocks_in_mhz(kbd);
TsiChungLiewfc3ca3b62007-08-16 15:05:11 -0500[diff] [blame]54
Simon Glassae7ed572023-02-05 15:40:13 -0700[diff] [blame]55 if (IS_ENABLED(CONFIG_LMB)) {
Ashok Reddy Soma8aaae3d2022-07-07 10:45:37 +0200[diff] [blame]56 ret = image_setup_linux(images);
57 if (ret)
58 goto error;
59 }
wdenkabf7a7c2003-12-08 01:34:36 +0000[diff] [blame]60
Masahiro Yamadaf7ed78b2020-06-26 15:13:33 +0900[diff] [blame]61 kernel = (void (*)(struct bd_info *, ulong, ulong, ulong, ulong))images->ep;
Simon Glass6b4f0762013-05-08 08:06:05 +0000[diff] [blame]62
TsiChungLiewfc3ca3b62007-08-16 15:05:11 -0500[diff] [blame]63 debug("## Transferring control to Linux (at address %08lx) ...\n",
64 (ulong) kernel);
wdenkabf7a7c2003-12-08 01:34:36 +0000[diff] [blame]65
Simon Glass0169e6b2012-02-13 13:51:18 +0000[diff] [blame]66 bootstage_mark(BOOTSTAGE_ID_RUN_OS);
wdenkabf7a7c2003-12-08 01:34:36 +0000[diff] [blame]67
TsiChungLiewfc3ca3b62007-08-16 15:05:11 -0500[diff] [blame]68 /*
69 * Linux Kernel Parameters (passing board info data):
Richard Retanubun15fa2f02009-02-20 13:01:56 -0500[diff] [blame]70 * sp+00: Ignore, side effect of using jsr to jump to kernel
71 * sp+04: ptr to board info data
72 * sp+08: initrd_start or 0 if no initrd
73 * sp+12: initrd_end - unused if initrd_start is 0
74 * sp+16: Start of command line string
75 * sp+20: End of command line string
TsiChungLiewfc3ca3b62007-08-16 15:05:11 -0500[diff] [blame]76 */
Simon Glass660031e2014-06-07 22:07:58 -0600[diff] [blame]77 (*kernel)(kbd, images->initrd_start, images->initrd_end,
78 images->cmdline_start, images->cmdline_end);
TsiChungLiewfc3ca3b62007-08-16 15:05:11 -0500[diff] [blame]79 /* does not return */
Kumar Gala18f4c0f2008-02-27 21:51:46 -0600[diff] [blame]80error:
Kumar Gala48626aa2008-08-15 08:24:45 -0500[diff] [blame]81 return 1;
wdenkabf7a7c2003-12-08 01:34:36 +0000[diff] [blame]82}
Marian Balakowicz9c701e82008-01-31 13:57:17 +0100[diff] [blame]83
Masahiro Yamadaf7ed78b2020-06-26 15:13:33 +0900[diff] [blame]84static void set_clocks_in_mhz (struct bd_info *kbd)
Marian Balakowicz2efc2642008-01-31 13:58:13 +0100[diff] [blame]85{
86 char *s;
87
Simon Glass64b723f2017-08-03 12:22:12 -0600[diff] [blame]88 s = env_get("clocks_in_mhz");
89 if (s) {
Marian Balakowicz2efc2642008-01-31 13:58:13 +0100[diff] [blame]90 /* convert all clock information to MHz */
91 kbd->bi_intfreq /= 1000000L;
92 kbd->bi_busfreq /= 1000000L;
93 }
94}