2 * Copyright (c) 2011 The Chromium OS Authors.
3 * (C) Copyright 2002-2006
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
7 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
8 * Marius Groeger <mgroeger@sysgo.de>
10 * SPDX-License-Identifier: GPL-2.0+
15 /* TODO: can we just include all these headers whether needed or not? */
16 #if defined(CONFIG_CMD_BEDBUG)
17 #include <bedbug/type.h>
22 #include <environment.h>
26 #include <init_helpers.h>
30 #if defined(CONFIG_CMD_KGDB)
36 #ifdef CONFIG_BITBANGMII
42 #include <onenand_uboot.h>
46 #include <stdio_dev.h>
50 #ifdef CONFIG_ADDR_MAP
53 #include <asm/sections.h>
55 #include <linux/compiler.h>
56 #include <linux/err.h>
57 #include <efi_loader.h>
59 DECLARE_GLOBAL_DATA_PTR
;
61 ulong monitor_flash_len
;
63 __weak
int board_flash_wp_on(void)
66 * Most flashes can't be detected when write protection is enabled,
67 * so provide a way to let U-Boot gracefully ignore write protected
73 __weak
void cpu_secondary_init_r(void)
77 static int initr_secondary_cpu(void)
80 * after non-volatile devices & environment is setup and cpu code have
81 * another round to deal with any initialization that might require
82 * full access to the environment or loading of some image (firmware)
83 * from a non-volatile device
85 /* TODO: maybe define this for all archs? */
86 cpu_secondary_init_r();
91 static int initr_trace(void)
94 trace_init(gd
->trace_buff
, CONFIG_TRACE_BUFFER_SIZE
);
100 static int initr_reloc(void)
102 /* tell others: relocation done */
103 gd
->flags
|= GD_FLG_RELOC
| GD_FLG_FULL_MALLOC_INIT
;
110 * Some of these functions are needed purely because the functions they
111 * call return void. If we change them to return 0, these stubs can go away.
113 static int initr_caches(void)
121 __weak
int fixup_cpu(void)
126 static int initr_reloc_global_data(void)
129 monitor_flash_len
= _end
- __image_copy_start
;
130 #elif defined(CONFIG_NDS32)
131 monitor_flash_len
= (ulong
)&_end
- (ulong
)&_start
;
132 #elif !defined(CONFIG_SANDBOX) && !defined(CONFIG_NIOS2)
133 monitor_flash_len
= (ulong
)&__init_end
- gd
->relocaddr
;
135 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
137 * The gd->cpu pointer is set to an address in flash before relocation.
138 * We need to update it to point to the same CPU entry in RAM.
139 * TODO: why not just add gd->reloc_ofs?
141 gd
->arch
.cpu
+= gd
->relocaddr
- CONFIG_SYS_MONITOR_BASE
;
144 * If we didn't know the cpu mask & # cores, we can save them of
145 * now rather than 'computing' them constantly
149 #ifdef CONFIG_SYS_EXTRA_ENV_RELOC
151 * Some systems need to relocate the env_addr pointer early because the
152 * location it points to will get invalidated before env_relocate is
153 * called. One example is on systems that might use a L2 or L3 cache
154 * in SRAM mode and initialize that cache from SRAM mode back to being
155 * a cache in cpu_init_r.
157 gd
->env_addr
+= gd
->relocaddr
- CONFIG_SYS_MONITOR_BASE
;
159 #ifdef CONFIG_OF_EMBED
161 * The fdt_blob needs to be moved to new relocation address
162 * incase of FDT blob is embedded with in image
164 gd
->fdt_blob
+= gd
->reloc_off
;
166 #ifdef CONFIG_EFI_LOADER
167 efi_runtime_relocate(gd
->relocaddr
, NULL
);
173 static int initr_serial(void)
179 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_MIPS)
180 static int initr_trap(void)
183 * Setup trap handlers
185 #if defined(CONFIG_PPC)
186 trap_init(gd
->relocaddr
);
188 trap_init(CONFIG_SYS_SDRAM_BASE
);
194 #ifdef CONFIG_ADDR_MAP
195 static int initr_addr_map(void)
203 #ifdef CONFIG_LOGBUFFER
204 unsigned long logbuffer_base(void)
206 return gd
->ram_top
- LOGBUFF_LEN
;
209 static int initr_logbuffer(void)
217 static int initr_post_backlog(void)
219 post_output_backlog();
224 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
225 static int initr_unlock_ram_in_cache(void)
227 unlock_ram_in_cache(); /* it's time to unlock D-cache in e500 */
233 static int initr_pci(void)
235 #ifndef CONFIG_DM_PCI
243 static int initr_barrier(void)
246 /* TODO: Can we not use dmb() macros for this? */
252 static int initr_malloc(void)
256 #if CONFIG_VAL(SYS_MALLOC_F_LEN)
257 debug("Pre-reloc malloc() used %#lx bytes (%ld KB)\n", gd
->malloc_ptr
,
258 gd
->malloc_ptr
/ 1024);
260 /* The malloc area is immediately below the monitor copy in DRAM */
261 malloc_start
= gd
->relocaddr
- TOTAL_MALLOC_LEN
;
262 mem_malloc_init((ulong
)map_sysmem(malloc_start
, TOTAL_MALLOC_LEN
),
267 static int initr_console_record(void)
269 #if defined(CONFIG_CONSOLE_RECORD)
270 return console_record_init();
276 #ifdef CONFIG_SYS_NONCACHED_MEMORY
277 static int initr_noncached(void)
284 #ifdef CONFIG_OF_LIVE
285 static int initr_of_live(void)
289 bootstage_start(BOOTSTAGE_ID_ACCUM_OF_LIVE
, "of_live");
290 ret
= of_live_build(gd
->fdt_blob
, (struct device_node
**)&gd
->of_root
);
291 bootstage_accum(BOOTSTAGE_ID_ACCUM_OF_LIVE
);
300 static int initr_dm(void)
304 /* Save the pre-reloc driver model and start a new one */
305 gd
->dm_root_f
= gd
->dm_root
;
310 bootstage_start(BOOTSTATE_ID_ACCUM_DM_R
, "dm_r");
311 ret
= dm_init_and_scan(false);
312 bootstage_accum(BOOTSTATE_ID_ACCUM_DM_R
);
315 #ifdef CONFIG_TIMER_EARLY
316 ret
= dm_timer_init();
325 static int initr_bootstage(void)
327 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R
, "board_init_r");
332 __weak
int power_init_board(void)
337 static int initr_announce(void)
339 debug("Now running in RAM - U-Boot at: %08lx\n", gd
->relocaddr
);
343 #ifdef CONFIG_NEEDS_MANUAL_RELOC
344 static int initr_manual_reloc_cmdtable(void)
346 fixup_cmdtable(ll_entry_start(cmd_tbl_t
, cmd
),
347 ll_entry_count(cmd_tbl_t
, cmd
));
352 #if defined(CONFIG_MTD_NOR_FLASH)
353 static int initr_flash(void)
355 ulong flash_size
= 0;
360 if (board_flash_wp_on())
361 printf("Uninitialized - Write Protect On\n");
363 flash_size
= flash_init();
365 print_size(flash_size
, "");
366 #ifdef CONFIG_SYS_FLASH_CHECKSUM
368 * Compute and print flash CRC if flashchecksum is set to 'y'
370 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
372 if (env_get_yesno("flashchecksum") == 1) {
373 printf(" CRC: %08X", crc32(0,
374 (const unsigned char *) CONFIG_SYS_FLASH_BASE
,
377 #endif /* CONFIG_SYS_FLASH_CHECKSUM */
380 /* update start of FLASH memory */
381 #ifdef CONFIG_SYS_FLASH_BASE
382 bd
->bi_flashstart
= CONFIG_SYS_FLASH_BASE
;
384 /* size of FLASH memory (final value) */
385 bd
->bi_flashsize
= flash_size
;
387 #if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
388 /* Make a update of the Memctrl. */
389 update_flash_size(flash_size
);
393 #if defined(CONFIG_OXC) || defined(CONFIG_RMU)
394 /* flash mapped at end of memory map */
395 bd
->bi_flashoffset
= CONFIG_SYS_TEXT_BASE
+ flash_size
;
396 #elif CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
397 bd
->bi_flashoffset
= monitor_flash_len
; /* reserved area for monitor */
403 #if defined(CONFIG_PPC) && !defined(CONFIG_DM_SPI)
404 static int initr_spi(void)
406 /* PPC does this here */
408 #if !defined(CONFIG_ENV_IS_IN_EEPROM)
417 #ifdef CONFIG_CMD_NAND
418 /* go init the NAND */
419 static int initr_nand(void)
423 printf("%lu MiB\n", nand_size() / 1024);
428 #if defined(CONFIG_CMD_ONENAND)
429 /* go init the NAND */
430 static int initr_onenand(void)
439 static int initr_mmc(void)
442 mmc_initialize(gd
->bd
);
448 * Tell if it's OK to load the environment early in boot.
450 * If CONFIG_OF_CONTROL is defined, we'll check with the FDT to see
451 * if this is OK (defaulting to saying it's OK).
453 * NOTE: Loading the environment early can be a bad idea if security is
454 * important, since no verification is done on the environment.
456 * @return 0 if environment should not be loaded, !=0 if it is ok to load
458 static int should_load_env(void)
460 #ifdef CONFIG_OF_CONTROL
461 return fdtdec_get_config_int(gd
->fdt_blob
, "load-environment", 1);
462 #elif defined CONFIG_DELAY_ENVIRONMENT
469 static int initr_env(void)
471 /* initialize environment */
472 if (should_load_env())
475 set_default_env(NULL
);
476 #ifdef CONFIG_OF_CONTROL
477 env_set_addr("fdtcontroladdr", gd
->fdt_blob
);
480 /* Initialize from environment */
481 load_addr
= env_get_ulong("loadaddr", 16, load_addr
);
486 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
487 static int initr_malloc_bootparams(void)
489 gd
->bd
->bi_boot_params
= (ulong
)malloc(CONFIG_SYS_BOOTPARAMS_LEN
);
490 if (!gd
->bd
->bi_boot_params
) {
491 puts("WARNING: Cannot allocate space for boot parameters\n");
498 static int initr_jumptable(void)
504 #if defined(CONFIG_API)
505 static int initr_api(void)
513 /* enable exceptions */
515 static int initr_enable_interrupts(void)
522 #ifdef CONFIG_CMD_NET
523 static int initr_ethaddr(void)
527 /* kept around for legacy kernels only ... ignore the next section */
528 eth_env_get_enetaddr("ethaddr", bd
->bi_enetaddr
);
529 #ifdef CONFIG_HAS_ETH1
530 eth_env_get_enetaddr("eth1addr", bd
->bi_enet1addr
);
532 #ifdef CONFIG_HAS_ETH2
533 eth_env_get_enetaddr("eth2addr", bd
->bi_enet2addr
);
535 #ifdef CONFIG_HAS_ETH3
536 eth_env_get_enetaddr("eth3addr", bd
->bi_enet3addr
);
538 #ifdef CONFIG_HAS_ETH4
539 eth_env_get_enetaddr("eth4addr", bd
->bi_enet4addr
);
541 #ifdef CONFIG_HAS_ETH5
542 eth_env_get_enetaddr("eth5addr", bd
->bi_enet5addr
);
546 #endif /* CONFIG_CMD_NET */
548 #ifdef CONFIG_CMD_KGDB
549 static int initr_kgdb(void)
557 #if defined(CONFIG_LED_STATUS)
558 static int initr_status_led(void)
560 #if defined(CONFIG_LED_STATUS_BOOT)
561 status_led_set(CONFIG_LED_STATUS_BOOT
, CONFIG_LED_STATUS_BLINKING
);
569 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
570 static int initr_scsi(void)
579 #ifdef CONFIG_BITBANGMII
580 static int initr_bbmii(void)
587 #ifdef CONFIG_CMD_NET
588 static int initr_net(void)
592 #if defined(CONFIG_RESET_PHY_R)
593 debug("Reset Ethernet PHY\n");
601 static int initr_post(void)
603 post_run(NULL
, POST_RAM
| post_bootmode_get(0));
608 #if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_IDE)
609 static int initr_pcmcia(void)
617 #if defined(CONFIG_IDE)
618 static int initr_ide(void)
621 #if defined(CONFIG_START_IDE)
622 if (board_start_ide())
631 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
633 * Export available size of memory for Linux, taking into account the
634 * protected RAM at top of memory
642 pram
= env_get_ulong("pram", 10, CONFIG_PRAM
);
644 # if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR)
645 /* Also take the logbuffer into account (pram is in kB) */
646 pram
+= (LOGBUFF_LEN
+ LOGBUFF_OVERHEAD
) / 1024;
648 sprintf(memsz
, "%ldk", (long int) ((gd
->ram_size
/ 1024) - pram
));
649 env_set("mem", memsz
);
655 #ifdef CONFIG_CMD_BEDBUG
656 static int initr_bedbug(void)
665 static int initr_kbd(void)
673 static int run_main_loop(void)
675 #ifdef CONFIG_SANDBOX
676 sandbox_main_loop_init();
678 /* main_loop() can return to retry autoboot, if so just run it again */
685 * Over time we hope to remove these functions with code fragments and
686 * stub funtcions, and instead call the relevant function directly.
688 * We also hope to remove most of the driver-related init and do it if/when
689 * the driver is later used.
691 * TODO: perhaps reset the watchdog in the initcall function after each call?
693 static init_fnc_t init_sequence_r
[] = {
696 /* TODO: could x86/PPC have this also perhaps? */
699 /* Note: For Freescale LS2 SoCs, new MMU table is created in DDR.
700 * A temporary mapping of IFC high region is since removed,
701 * so environmental variables in NOR flash is not availble
702 * until board_init() is called below to remap IFC to high
706 initr_reloc_global_data
,
707 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
708 initr_unlock_ram_in_cache
,
712 initr_bootstage
, /* Needs malloc() but has its own timer */
713 initr_console_record
,
714 #ifdef CONFIG_SYS_NONCACHED_MEMORY
718 #ifdef CONFIG_OF_LIVE
724 #if defined(CONFIG_ARM) || defined(CONFIG_NDS32)
725 board_init
, /* Setup chipselects */
728 * TODO: printing of the clock inforamtion of the board is now
729 * implemented as part of bdinfo command. Currently only support for
730 * davinci SOC's is added. Remove this check once all the board
734 set_cpu_clk_info
, /* Setup clock information */
736 #ifdef CONFIG_EFI_LOADER
742 INIT_FUNC_WATCHDOG_RESET
743 #ifdef CONFIG_NEEDS_MANUAL_RELOC
744 initr_manual_reloc_cmdtable
,
746 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_MIPS)
749 #ifdef CONFIG_ADDR_MAP
752 #if defined(CONFIG_BOARD_EARLY_INIT_R)
755 INIT_FUNC_WATCHDOG_RESET
756 #ifdef CONFIG_LOGBUFFER
762 INIT_FUNC_WATCHDOG_RESET
763 #if defined(CONFIG_PCI) && defined(CONFIG_SYS_EARLY_PCI_INIT)
765 * Do early PCI configuration _before_ the flash gets initialised,
766 * because PCU ressources are crucial for flash access on some boards.
770 #ifdef CONFIG_ARCH_EARLY_INIT_R
774 #ifdef CONFIG_MTD_NOR_FLASH
777 INIT_FUNC_WATCHDOG_RESET
778 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_X86)
779 /* initialize higher level parts of CPU like time base and timers */
785 #ifdef CONFIG_CMD_NAND
788 #ifdef CONFIG_CMD_ONENAND
795 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
796 initr_malloc_bootparams
,
798 INIT_FUNC_WATCHDOG_RESET
800 #if defined(CONFIG_ID_EEPROM) || defined(CONFIG_SYS_I2C_MAC_OFFSET)
801 mac_read_from_eeprom
,
803 INIT_FUNC_WATCHDOG_RESET
804 #if defined(CONFIG_PCI) && !defined(CONFIG_SYS_EARLY_PCI_INIT)
806 * Do pci configuration
815 console_init_r
, /* fully init console as a device */
816 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
820 #ifdef CONFIG_ARCH_MISC_INIT
821 arch_misc_init
, /* miscellaneous arch-dependent init */
823 #ifdef CONFIG_MISC_INIT_R
824 misc_init_r
, /* miscellaneous platform-dependent init */
826 INIT_FUNC_WATCHDOG_RESET
827 #ifdef CONFIG_CMD_KGDB
832 initr_enable_interrupts
,
834 #if defined(CONFIG_MICROBLAZE) || defined(CONFIG_M68K)
835 timer_init
, /* initialize timer */
837 #if defined(CONFIG_LED_STATUS)
840 /* PPC has a udelay(20) here dating from 2002. Why? */
841 #ifdef CONFIG_CMD_NET
844 #ifdef CONFIG_BOARD_LATE_INIT
847 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
848 INIT_FUNC_WATCHDOG_RESET
851 #ifdef CONFIG_BITBANGMII
854 #ifdef CONFIG_CMD_NET
855 INIT_FUNC_WATCHDOG_RESET
861 #if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_IDE)
864 #if defined(CONFIG_IDE)
867 #ifdef CONFIG_LAST_STAGE_INIT
868 INIT_FUNC_WATCHDOG_RESET
870 * Some parts can be only initialized if all others (like
871 * Interrupts) are up and running (i.e. the PC-style ISA
876 #ifdef CONFIG_CMD_BEDBUG
877 INIT_FUNC_WATCHDOG_RESET
880 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
889 void board_init_r(gd_t
*new_gd
, ulong dest_addr
)
892 * Set up the new global data pointer. So far only x86 does this
894 * TODO(sjg@chromium.org): Consider doing this for all archs, or
895 * dropping the new_gd parameter.
897 #if CONFIG_IS_ENABLED(X86_64)
898 arch_setup_gd(new_gd
);
901 #ifdef CONFIG_NEEDS_MANUAL_RELOC
905 #if !defined(CONFIG_X86) && !defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
909 #ifdef CONFIG_NEEDS_MANUAL_RELOC
910 for (i
= 0; i
< ARRAY_SIZE(init_sequence_r
); i
++)
911 init_sequence_r
[i
] += gd
->reloc_off
;
914 if (initcall_run_list(init_sequence_r
))
917 /* NOTREACHED - run_main_loop() does not return */