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+
14 /* TODO: can we just include all these headers whether needed or not? */
15 #if defined(CONFIG_CMD_BEDBUG)
16 #include <bedbug/type.h>
18 #ifdef CONFIG_HAS_DATAFLASH
19 #include <dataflash.h>
21 #include <environment.h>
23 #if defined(CONFIG_CMD_IDE)
30 #if defined(CONFIG_CMD_KGDB)
35 #ifdef CONFIG_BITBANGMII
40 #include <onenand_uboot.h>
44 #include <stdio_dev.h>
47 #ifdef CONFIG_ADDR_MAP
50 #include <asm/sections.h>
52 #include <asm/init_helpers.h>
54 #include <linux/compiler.h>
56 DECLARE_GLOBAL_DATA_PTR;
58 ulong monitor_flash_len;
60 int __board_flash_wp_on(void)
63 * Most flashes can't be detected when write protection is enabled,
64 * so provide a way to let U-Boot gracefully ignore write protected
70 int board_flash_wp_on(void)
71 __attribute__ ((weak, alias("__board_flash_wp_on")));
73 void __cpu_secondary_init_r(void)
77 void cpu_secondary_init_r(void)
78 __attribute__ ((weak, alias("__cpu_secondary_init_r")));
80 static int initr_secondary_cpu(void)
83 * after non-volatile devices & environment is setup and cpu code have
84 * another round to deal with any initialization that might require
85 * full access to the environment or loading of some image (firmware)
86 * from a non-volatile device
88 /* TODO: maybe define this for all archs? */
89 cpu_secondary_init_r();
94 static int initr_trace(void)
97 trace_init(gd->trace_buff, CONFIG_TRACE_BUFFER_SIZE);
103 static int initr_reloc(void)
105 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
106 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
113 * Some of these functions are needed purely because the functions they
114 * call return void. If we change them to return 0, these stubs can go away.
116 static int initr_caches(void)
124 __weak int fixup_cpu(void)
129 static int initr_reloc_global_data(void)
131 #ifdef CONFIG_SYS_SYM_OFFSETS
132 monitor_flash_len = _end_ofs;
133 #elif !defined(CONFIG_SANDBOX)
134 monitor_flash_len = (ulong)&__init_end - gd->relocaddr;
136 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
138 * The gd->cpu pointer is set to an address in flash before relocation.
139 * We need to update it to point to the same CPU entry in RAM.
140 * TODO: why not just add gd->reloc_ofs?
142 gd->arch.cpu += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
145 * If we didn't know the cpu mask & # cores, we can save them of
146 * now rather than 'computing' them constantly
150 #ifdef CONFIG_SYS_EXTRA_ENV_RELOC
152 * Some systems need to relocate the env_addr pointer early because the
153 * location it points to will get invalidated before env_relocate is
154 * called. One example is on systems that might use a L2 or L3 cache
155 * in SRAM mode and initialize that cache from SRAM mode back to being
156 * a cache in cpu_init_r.
158 gd->env_addr += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
163 static int initr_serial(void)
170 static int initr_trap(void)
173 * Setup trap handlers
175 trap_init(gd->relocaddr);
181 #ifdef CONFIG_ADDR_MAP
182 static int initr_addr_map(void)
190 #ifdef CONFIG_LOGBUFFER
191 unsigned long logbuffer_base(void)
193 return gd->ram_top - LOGBUFF_LEN;
196 static int initr_logbuffer(void)
204 static int initr_post_backlog(void)
206 post_output_backlog();
211 #ifdef CONFIG_SYS_DELAYED_ICACHE
212 static int initr_icache_enable(void)
218 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
219 static int initr_unlock_ram_in_cache(void)
221 unlock_ram_in_cache(); /* it's time to unlock D-cache in e500 */
227 static int initr_pci(void)
235 #ifdef CONFIG_WINBOND_83C553
236 static int initr_w83c553f(void)
239 * Initialise the ISA bridge
241 initialise_w83c553f();
246 static int initr_barrier(void)
249 /* TODO: Can we not use dmb() macros for this? */
255 static int initr_malloc(void)
259 /* The malloc area is immediately below the monitor copy in DRAM */
260 malloc_start = gd->relocaddr - TOTAL_MALLOC_LEN;
261 mem_malloc_init((ulong)map_sysmem(malloc_start, TOTAL_MALLOC_LEN),
266 __weak int power_init_board(void)
271 static int initr_announce(void)
273 debug("Now running in RAM - U-Boot at: %08lx\n", gd->relocaddr);
277 #if !defined(CONFIG_SYS_NO_FLASH)
278 static int initr_flash(void)
280 ulong flash_size = 0;
286 if (board_flash_wp_on()) {
287 printf("Uninitialized - Write Protect On\n");
288 /* Since WP is on, we can't find real size. Set to 0 */
291 flash_size = flash_init();
295 puts("*** failed ***\n");
297 /* Why does PPC do this? */
302 print_size(flash_size, "");
303 #ifdef CONFIG_SYS_FLASH_CHECKSUM
305 * Compute and print flash CRC if flashchecksum is set to 'y'
307 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
309 if (getenv_yesno("flashchecksum") == 1) {
310 printf(" CRC: %08X", crc32(0,
311 (const unsigned char *) CONFIG_SYS_FLASH_BASE,
314 #endif /* CONFIG_SYS_FLASH_CHECKSUM */
317 /* update start of FLASH memory */
318 #ifdef CONFIG_SYS_FLASH_BASE
319 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
321 /* size of FLASH memory (final value) */
322 bd->bi_flashsize = flash_size;
324 #if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
325 /* Make a update of the Memctrl. */
326 update_flash_size(flash_size);
330 #if defined(CONFIG_OXC) || defined(CONFIG_RMU)
331 /* flash mapped at end of memory map */
332 bd->bi_flashoffset = CONFIG_SYS_TEXT_BASE + flash_size;
333 #elif CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
334 bd->bi_flashoffset = monitor_flash_len; /* reserved area for monitor */
341 static int initr_spi(void)
343 /* PPC does this here */
345 #if !defined(CONFIG_ENV_IS_IN_EEPROM)
354 #ifdef CONFIG_CMD_NAND
355 /* go init the NAND */
364 #if defined(CONFIG_CMD_ONENAND)
365 /* go init the NAND */
366 int initr_onenand(void)
374 #ifdef CONFIG_GENERIC_MMC
378 mmc_initialize(gd->bd);
383 #ifdef CONFIG_HAS_DATAFLASH
384 int initr_dataflash(void)
386 AT91F_DataflashInit();
387 dataflash_print_info();
393 * Tell if it's OK to load the environment early in boot.
395 * If CONFIG_OF_CONFIG is defined, we'll check with the FDT to see
396 * if this is OK (defaulting to saying it's OK).
398 * NOTE: Loading the environment early can be a bad idea if security is
399 * important, since no verification is done on the environment.
401 * @return 0 if environment should not be loaded, !=0 if it is ok to load
403 static int should_load_env(void)
405 #ifdef CONFIG_OF_CONTROL
406 return fdtdec_get_config_int(gd->fdt_blob, "load-environment", 1);
407 #elif defined CONFIG_DELAY_ENVIRONMENT
414 static int initr_env(void)
416 /* initialize environment */
417 if (should_load_env())
420 set_default_env(NULL);
422 /* Initialize from environment */
423 load_addr = getenv_ulong("loadaddr", 16, load_addr);
424 #if defined(CONFIG_SYS_EXTBDINFO)
425 #if defined(CONFIG_405GP) || defined(CONFIG_405EP)
426 #if defined(CONFIG_I2CFAST)
428 * set bi_iic_fast for linux taking environment variable
429 * "i2cfast" into account
432 char *s = getenv("i2cfast");
434 if (s && ((*s == 'y') || (*s == 'Y'))) {
435 gd->bd->bi_iic_fast[0] = 1;
436 gd->bd->bi_iic_fast[1] = 1;
439 #endif /* CONFIG_I2CFAST */
440 #endif /* CONFIG_405GP, CONFIG_405EP */
441 #endif /* CONFIG_SYS_EXTBDINFO */
446 static int initr_hermes(void)
448 if ((gd->board_type >> 16) == 2)
449 gd->bd->bi_ethspeed = gd->board_type & 0xFFFF;
451 gd->bd->bi_ethspeed = 0xFFFF;
455 static int initr_hermes_start(void)
457 if (gd->bd->bi_ethspeed != 0xFFFF)
458 hermes_start_lxt980((int) gd->bd->bi_ethspeed);
464 /* TODO: with new initcalls, move this into the driver */
465 extern void sc3_read_eeprom(void);
467 static int initr_sc3_read_eeprom(void)
474 static int initr_jumptable(void)
480 #if defined(CONFIG_API)
481 static int initr_api(void)
489 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
490 static int show_model_r(void)
492 /* Put this here so it appears on the LCD, now it is ready */
493 # ifdef CONFIG_OF_CONTROL
496 model = (char *)fdt_getprop(gd->fdt_blob, 0, "model", NULL);
497 printf("Model: %s\n", model ? model : "<unknown>");
504 /* enable exceptions */
506 static int initr_enable_interrupts(void)
513 #ifdef CONFIG_CMD_NET
514 static int initr_ethaddr(void)
518 /* kept around for legacy kernels only ... ignore the next section */
519 eth_getenv_enetaddr("ethaddr", bd->bi_enetaddr);
520 #ifdef CONFIG_HAS_ETH1
521 eth_getenv_enetaddr("eth1addr", bd->bi_enet1addr);
523 #ifdef CONFIG_HAS_ETH2
524 eth_getenv_enetaddr("eth2addr", bd->bi_enet2addr);
526 #ifdef CONFIG_HAS_ETH3
527 eth_getenv_enetaddr("eth3addr", bd->bi_enet3addr);
529 #ifdef CONFIG_HAS_ETH4
530 eth_getenv_enetaddr("eth4addr", bd->bi_enet4addr);
532 #ifdef CONFIG_HAS_ETH5
533 eth_getenv_enetaddr("eth5addr", bd->bi_enet5addr);
537 #endif /* CONFIG_CMD_NET */
539 #ifdef CONFIG_CMD_KGDB
540 static int initr_kgdb(void)
548 #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
549 static int initr_status_led(void)
551 status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING);
557 #if defined(CONFIG_CMD_SCSI)
558 static int initr_scsi(void)
560 /* Not supported properly on ARM yet */
568 #endif /* CONFIG_CMD_NET */
570 #if defined(CONFIG_CMD_DOC)
571 static int initr_doc(void)
578 #ifdef CONFIG_BITBANGMII
579 static int initr_bbmii(void)
586 #ifdef CONFIG_CMD_NET
587 static int initr_net(void)
590 eth_initialize(gd->bd);
591 #if defined(CONFIG_RESET_PHY_R)
592 debug("Reset Ethernet PHY\n");
600 static int initr_post(void)
602 post_run(NULL, POST_RAM | post_bootmode_get(0));
607 #if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_CMD_IDE)
608 static int initr_pcmcia(void)
616 #if defined(CONFIG_CMD_IDE)
617 static int initr_ide(void)
619 #ifdef CONFIG_IDE_8xx_PCCARD
624 #if defined(CONFIG_START_IDE)
625 if (board_start_ide())
634 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
636 * Export available size of memory for Linux, taking into account the
637 * protected RAM at top of memory
645 pram = getenv_ulong("pram", 10, CONFIG_PRAM);
647 # if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR)
648 /* Also take the logbuffer into account (pram is in kB) */
649 pram += (LOGBUFF_LEN + LOGBUFF_OVERHEAD) / 1024;
651 sprintf(memsz, "%ldk", (gd->ram_size / 1024) - pram);
652 setenv("mem", memsz);
658 #ifdef CONFIG_CMD_BEDBUG
659 static int initr_bedbug(void)
668 static int initr_kbd(void)
676 #ifdef CONFIG_MODEM_SUPPORT
677 static int initr_modem(void)
679 /* TODO: with new initcalls, move this into the driver */
680 extern int do_mdm_init;
682 do_mdm_init = gd->do_mdm_init;
687 static int run_main_loop(void)
689 #ifdef CONFIG_SANDBOX
690 sandbox_main_loop_init();
692 /* main_loop() can return to retry autoboot, if so just run it again */
699 * Over time we hope to remove these functions with code fragments and
700 * stub funtcions, and instead call the relevant function directly.
702 * We also hope to remove most of the driver-related init and do it if/when
703 * the driver is later used.
705 * TODO: perhaps reset the watchdog in the initcall function after each call?
707 init_fnc_t init_sequence_r[] = {
710 /* TODO: could x86/PPC have this also perhaps? */
713 board_init, /* Setup chipselects */
716 * TODO: printing of the clock inforamtion of the board is now
717 * implemented as part of bdinfo command. Currently only support for
718 * davinci SOC's is added. Remove this check once all the board
722 set_cpu_clk_info, /* Setup clock information */
724 initr_reloc_global_data,
727 INIT_FUNC_WATCHDOG_RESET
731 #ifdef CONFIG_ADDR_MAP
734 #if defined(CONFIG_BOARD_EARLY_INIT_R)
737 INIT_FUNC_WATCHDOG_RESET
738 #ifdef CONFIG_LOGBUFFER
744 INIT_FUNC_WATCHDOG_RESET
745 #ifdef CONFIG_SYS_DELAYED_ICACHE
748 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
749 initr_unlock_ram_in_cache,
751 #if defined(CONFIG_PCI) && defined(CONFIG_SYS_EARLY_PCI_INIT)
753 * Do early PCI configuration _before_ the flash gets initialised,
754 * because PCU ressources are crucial for flash access on some boards.
758 #ifdef CONFIG_WINBOND_83C553
764 #ifdef CONFIG_ARCH_EARLY_INIT_R
768 #ifndef CONFIG_SYS_NO_FLASH
771 INIT_FUNC_WATCHDOG_RESET
772 #if defined(CONFIG_PPC) || defined(CONFIG_X86)
773 /* initialize higher level parts of CPU like time base and timers */
779 #if defined(CONFIG_X86) && defined(CONFIG_SPI)
782 #ifdef CONFIG_CMD_NAND
785 #ifdef CONFIG_CMD_ONENAND
788 #ifdef CONFIG_GENERIC_MMC
791 #ifdef CONFIG_HAS_DATAFLASH
795 INIT_FUNC_WATCHDOG_RESET
798 initr_sc3_read_eeprom,
803 #if defined(CONFIG_ID_EEPROM) || defined(CONFIG_SYS_I2C_MAC_OFFSET)
804 mac_read_from_eeprom,
806 INIT_FUNC_WATCHDOG_RESET
807 #if defined(CONFIG_PCI) && !defined(CONFIG_SYS_EARLY_PCI_INIT)
809 * Do pci configuration
818 console_init_r, /* fully init console as a device */
819 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
822 #ifdef CONFIG_ARCH_MISC_INIT
823 arch_misc_init, /* miscellaneous arch-dependent init */
825 #ifdef CONFIG_MISC_INIT_R
826 misc_init_r, /* miscellaneous platform-dependent init */
831 INIT_FUNC_WATCHDOG_RESET
832 #ifdef CONFIG_CMD_KGDB
839 #if defined(CONFIG_ARM) || defined(CONFIG_x86)
840 initr_enable_interrupts,
843 timer_init, /* initialize timer */
845 #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
848 /* PPC has a udelay(20) here dating from 2002. Why? */
849 #ifdef CONFIG_CMD_NET
852 #ifdef CONFIG_BOARD_LATE_INIT
855 #ifdef CONFIG_CMD_SCSI
856 INIT_FUNC_WATCHDOG_RESET
859 #ifdef CONFIG_CMD_DOC
860 INIT_FUNC_WATCHDOG_RESET
863 #ifdef CONFIG_BITBANGMII
866 #ifdef CONFIG_CMD_NET
867 INIT_FUNC_WATCHDOG_RESET
873 #if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_CMD_IDE)
876 #if defined(CONFIG_CMD_IDE)
879 #ifdef CONFIG_LAST_STAGE_INIT
880 INIT_FUNC_WATCHDOG_RESET
882 * Some parts can be only initialized if all others (like
883 * Interrupts) are up and running (i.e. the PC-style ISA
888 #ifdef CONFIG_CMD_BEDBUG
889 INIT_FUNC_WATCHDOG_RESET
892 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
898 #ifdef CONFIG_MODEM_SUPPORT
904 void board_init_r(gd_t *new_gd, ulong dest_addr)
909 if (initcall_run_list(init_sequence_r))
912 /* NOTREACHED - run_main_loop() does not return */