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 #include <linux/compiler.h>
17 #include <environment.h>
21 #if defined(CONFIG_CMD_IDE)
30 /* TODO: Can we move these into arch/ headers? */
40 #if defined(CONFIG_MP) && (defined(CONFIG_MPC86xx) || defined(CONFIG_E500))
47 #include <status_led.h>
52 #include <linux/errno.h>
54 #include <asm/sections.h>
55 #if defined(CONFIG_X86) || defined(CONFIG_ARC)
56 #include <asm/init_helpers.h>
58 #if defined(CONFIG_X86) || defined(CONFIG_ARC) || defined(CONFIG_XTENSA)
59 #include <asm/relocate.h>
62 #include <linux/compiler.h>
65 * Pointer to initial global data area
67 * Here we initialize it if needed.
69 #ifdef XTRN_DECLARE_GLOBAL_DATA_PTR
70 #undef XTRN_DECLARE_GLOBAL_DATA_PTR
71 #define XTRN_DECLARE_GLOBAL_DATA_PTR /* empty = allocate here */
72 DECLARE_GLOBAL_DATA_PTR = (gd_t *) (CONFIG_SYS_INIT_GD_ADDR);
74 DECLARE_GLOBAL_DATA_PTR;
78 * TODO(sjg@chromium.org): IMO this code should be
79 * refactored to a single function, something like:
81 * void led_set_state(enum led_colour_t colour, int on);
83 /************************************************************************
84 * Coloured LED functionality
85 ************************************************************************
86 * May be supplied by boards if desired
88 __weak void coloured_LED_init(void) {}
89 __weak void red_led_on(void) {}
90 __weak void red_led_off(void) {}
91 __weak void green_led_on(void) {}
92 __weak void green_led_off(void) {}
93 __weak void yellow_led_on(void) {}
94 __weak void yellow_led_off(void) {}
95 __weak void blue_led_on(void) {}
96 __weak void blue_led_off(void) {}
99 * Why is gd allocated a register? Prior to reloc it might be better to
100 * just pass it around to each function in this file?
102 * After reloc one could argue that it is hardly used and doesn't need
103 * to be in a register. Or if it is it should perhaps hold pointers to all
104 * global data for all modules, so that post-reloc we can avoid the massive
105 * literal pool we get on ARM. Or perhaps just encourage each module to use
110 * Could the CONFIG_SPL_BUILD infection become a flag in gd?
113 #if defined(CONFIG_WATCHDOG) || defined(CONFIG_HW_WATCHDOG)
114 static int init_func_watchdog_init(void)
116 # if defined(CONFIG_HW_WATCHDOG) && \
117 (defined(CONFIG_M68K) || defined(CONFIG_MICROBLAZE) || \
118 defined(CONFIG_SH) || defined(CONFIG_AT91SAM9_WATCHDOG) || \
119 defined(CONFIG_DESIGNWARE_WATCHDOG) || \
120 defined(CONFIG_IMX_WATCHDOG))
122 puts(" Watchdog enabled\n");
129 int init_func_watchdog_reset(void)
135 #endif /* CONFIG_WATCHDOG */
137 __weak void board_add_ram_info(int use_default)
139 /* please define platform specific board_add_ram_info() */
142 static int init_baud_rate(void)
144 gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
148 static int display_text_info(void)
150 #if !defined(CONFIG_SANDBOX) && !defined(CONFIG_EFI_APP)
151 ulong bss_start, bss_end, text_base;
153 bss_start = (ulong)&__bss_start;
154 bss_end = (ulong)&__bss_end;
156 #ifdef CONFIG_SYS_TEXT_BASE
157 text_base = CONFIG_SYS_TEXT_BASE;
159 text_base = CONFIG_SYS_MONITOR_BASE;
162 debug("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
163 text_base, bss_start, bss_end);
166 #ifdef CONFIG_USE_IRQ
167 debug("IRQ Stack: %08lx\n", IRQ_STACK_START);
168 debug("FIQ Stack: %08lx\n", FIQ_STACK_START);
174 static int announce_dram_init(void)
180 #if defined(CONFIG_MIPS) || defined(CONFIG_PPC) || defined(CONFIG_M68K)
181 static int init_func_ram(void)
183 gd->ram_size = initdram();
185 if (gd->ram_size > 0)
188 puts("*** failed ***\n");
193 static int show_dram_config(void)
195 unsigned long long size;
197 #ifdef CONFIG_NR_DRAM_BANKS
200 debug("\nRAM Configuration:\n");
201 for (i = size = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
202 size += gd->bd->bi_dram[i].size;
203 debug("Bank #%d: %llx ", i,
204 (unsigned long long)(gd->bd->bi_dram[i].start));
206 print_size(gd->bd->bi_dram[i].size, "\n");
214 print_size(size, "");
215 board_add_ram_info(0);
221 __weak void dram_init_banksize(void)
223 #if defined(CONFIG_NR_DRAM_BANKS) && defined(CONFIG_SYS_SDRAM_BASE)
224 gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
225 gd->bd->bi_dram[0].size = get_effective_memsize();
229 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C)
230 static int init_func_i2c(void)
233 #ifdef CONFIG_SYS_I2C
236 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
243 #if defined(CONFIG_HARD_SPI)
244 static int init_func_spi(void)
254 static int zero_global_data(void)
256 memset((void *)gd, '\0', sizeof(gd_t));
261 static int setup_mon_len(void)
263 #if defined(__ARM__) || defined(__MICROBLAZE__)
264 gd->mon_len = (ulong)&__bss_end - (ulong)_start;
265 #elif defined(CONFIG_SANDBOX) || defined(CONFIG_EFI_APP)
266 gd->mon_len = (ulong)&_end - (ulong)_init;
267 #elif defined(CONFIG_NIOS2) || defined(CONFIG_XTENSA)
268 gd->mon_len = CONFIG_SYS_MONITOR_LEN;
269 #elif defined(CONFIG_NDS32) || defined(CONFIG_SH)
270 gd->mon_len = (ulong)(&__bss_end) - (ulong)(&_start);
271 #elif defined(CONFIG_SYS_MONITOR_BASE)
272 /* TODO: use (ulong)&__bss_end - (ulong)&__text_start; ? */
273 gd->mon_len = (ulong)&__bss_end - CONFIG_SYS_MONITOR_BASE;
278 __weak int arch_cpu_init(void)
283 __weak int mach_cpu_init(void)
288 /* Get the top of usable RAM */
289 __weak ulong board_get_usable_ram_top(ulong total_size)
291 #ifdef CONFIG_SYS_SDRAM_BASE
293 * Detect whether we have so much RAM that it goes past the end of our
294 * 32-bit address space. If so, clip the usable RAM so it doesn't.
296 if (gd->ram_top < CONFIG_SYS_SDRAM_BASE)
298 * Will wrap back to top of 32-bit space when reservations
306 static int setup_dest_addr(void)
308 debug("Monitor len: %08lX\n", gd->mon_len);
310 * Ram is setup, size stored in gd !!
312 debug("Ram size: %08lX\n", (ulong)gd->ram_size);
313 #if defined(CONFIG_SYS_MEM_TOP_HIDE)
315 * Subtract specified amount of memory to hide so that it won't
316 * get "touched" at all by U-Boot. By fixing up gd->ram_size
317 * the Linux kernel should now get passed the now "corrected"
318 * memory size and won't touch it either. This should work
319 * for arch/ppc and arch/powerpc. Only Linux board ports in
320 * arch/powerpc with bootwrapper support, that recalculate the
321 * memory size from the SDRAM controller setup will have to
324 gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
326 #ifdef CONFIG_SYS_SDRAM_BASE
327 gd->ram_top = CONFIG_SYS_SDRAM_BASE;
329 gd->ram_top += get_effective_memsize();
330 gd->ram_top = board_get_usable_ram_top(gd->mon_len);
331 gd->relocaddr = gd->ram_top;
332 debug("Ram top: %08lX\n", (ulong)gd->ram_top);
333 #if defined(CONFIG_MP) && (defined(CONFIG_MPC86xx) || defined(CONFIG_E500))
335 * We need to make sure the location we intend to put secondary core
336 * boot code is reserved and not used by any part of u-boot
338 if (gd->relocaddr > determine_mp_bootpg(NULL)) {
339 gd->relocaddr = determine_mp_bootpg(NULL);
340 debug("Reserving MP boot page to %08lx\n", gd->relocaddr);
346 #if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR)
347 static int reserve_logbuffer(void)
349 /* reserve kernel log buffer */
350 gd->relocaddr -= LOGBUFF_RESERVE;
351 debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN,
358 /* reserve protected RAM */
359 static int reserve_pram(void)
363 reg = getenv_ulong("pram", 10, CONFIG_PRAM);
364 gd->relocaddr -= (reg << 10); /* size is in kB */
365 debug("Reserving %ldk for protected RAM at %08lx\n", reg,
369 #endif /* CONFIG_PRAM */
371 /* Round memory pointer down to next 4 kB limit */
372 static int reserve_round_4k(void)
374 gd->relocaddr &= ~(4096 - 1);
378 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) && \
380 static int reserve_mmu(void)
382 /* reserve TLB table */
383 gd->arch.tlb_size = PGTABLE_SIZE;
384 gd->relocaddr -= gd->arch.tlb_size;
386 /* round down to next 64 kB limit */
387 gd->relocaddr &= ~(0x10000 - 1);
389 gd->arch.tlb_addr = gd->relocaddr;
390 debug("TLB table from %08lx to %08lx\n", gd->arch.tlb_addr,
391 gd->arch.tlb_addr + gd->arch.tlb_size);
393 #ifdef CONFIG_SYS_MEM_RESERVE_SECURE
395 * Record allocated tlb_addr in case gd->tlb_addr to be overwritten
396 * with location within secure ram.
398 gd->arch.tlb_allocated = gd->arch.tlb_addr;
405 #ifdef CONFIG_DM_VIDEO
406 static int reserve_video(void)
411 addr = gd->relocaddr;
412 ret = video_reserve(&addr);
415 gd->relocaddr = addr;
422 static int reserve_lcd(void)
424 # ifdef CONFIG_FB_ADDR
425 gd->fb_base = CONFIG_FB_ADDR;
427 /* reserve memory for LCD display (always full pages) */
428 gd->relocaddr = lcd_setmem(gd->relocaddr);
429 gd->fb_base = gd->relocaddr;
430 # endif /* CONFIG_FB_ADDR */
434 # endif /* CONFIG_LCD */
436 # if defined(CONFIG_VIDEO) && (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) && \
437 !defined(CONFIG_ARM) && !defined(CONFIG_X86) && \
438 !defined(CONFIG_M68K)
439 static int reserve_legacy_video(void)
441 /* reserve memory for video display (always full pages) */
442 gd->relocaddr = video_setmem(gd->relocaddr);
443 gd->fb_base = gd->relocaddr;
448 #endif /* !CONFIG_DM_VIDEO */
450 static int reserve_trace(void)
453 gd->relocaddr -= CONFIG_TRACE_BUFFER_SIZE;
454 gd->trace_buff = map_sysmem(gd->relocaddr, CONFIG_TRACE_BUFFER_SIZE);
455 debug("Reserving %dk for trace data at: %08lx\n",
456 CONFIG_TRACE_BUFFER_SIZE >> 10, gd->relocaddr);
462 static int reserve_uboot(void)
465 * reserve memory for U-Boot code, data & bss
466 * round down to next 4 kB limit
468 gd->relocaddr -= gd->mon_len;
469 gd->relocaddr &= ~(4096 - 1);
471 /* round down to next 64 kB limit so that IVPR stays aligned */
472 gd->relocaddr &= ~(65536 - 1);
475 debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10,
478 gd->start_addr_sp = gd->relocaddr;
483 #ifndef CONFIG_SPL_BUILD
484 /* reserve memory for malloc() area */
485 static int reserve_malloc(void)
487 gd->start_addr_sp = gd->start_addr_sp - TOTAL_MALLOC_LEN;
488 debug("Reserving %dk for malloc() at: %08lx\n",
489 TOTAL_MALLOC_LEN >> 10, gd->start_addr_sp);
493 /* (permanently) allocate a Board Info struct */
494 static int reserve_board(void)
497 gd->start_addr_sp -= sizeof(bd_t);
498 gd->bd = (bd_t *)map_sysmem(gd->start_addr_sp, sizeof(bd_t));
499 memset(gd->bd, '\0', sizeof(bd_t));
500 debug("Reserving %zu Bytes for Board Info at: %08lx\n",
501 sizeof(bd_t), gd->start_addr_sp);
507 static int setup_machine(void)
509 #ifdef CONFIG_MACH_TYPE
510 gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
515 static int reserve_global_data(void)
517 gd->start_addr_sp -= sizeof(gd_t);
518 gd->new_gd = (gd_t *)map_sysmem(gd->start_addr_sp, sizeof(gd_t));
519 debug("Reserving %zu Bytes for Global Data at: %08lx\n",
520 sizeof(gd_t), gd->start_addr_sp);
524 static int reserve_fdt(void)
526 #ifndef CONFIG_OF_EMBED
528 * If the device tree is sitting immediately above our image then we
529 * must relocate it. If it is embedded in the data section, then it
530 * will be relocated with other data.
533 gd->fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
535 gd->start_addr_sp -= gd->fdt_size;
536 gd->new_fdt = map_sysmem(gd->start_addr_sp, gd->fdt_size);
537 debug("Reserving %lu Bytes for FDT at: %08lx\n",
538 gd->fdt_size, gd->start_addr_sp);
545 int arch_reserve_stacks(void)
550 static int reserve_stacks(void)
552 /* make stack pointer 16-byte aligned */
553 gd->start_addr_sp -= 16;
554 gd->start_addr_sp &= ~0xf;
557 * let the architecture-specific code tailor gd->start_addr_sp and
560 return arch_reserve_stacks();
563 static int display_new_sp(void)
565 debug("New Stack Pointer is: %08lx\n", gd->start_addr_sp);
570 #if defined(CONFIG_M68K) || defined(CONFIG_MIPS) || defined(CONFIG_PPC) || \
572 static int setup_board_part1(void)
577 * Save local variables to board info struct
579 bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; /* start of memory */
580 bd->bi_memsize = gd->ram_size; /* size in bytes */
582 #ifdef CONFIG_SYS_SRAM_BASE
583 bd->bi_sramstart = CONFIG_SYS_SRAM_BASE; /* start of SRAM */
584 bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE; /* size of SRAM */
587 #if defined(CONFIG_8xx) || defined(CONFIG_MPC8260) || defined(CONFIG_5xx) || \
588 defined(CONFIG_E500) || defined(CONFIG_MPC86xx)
589 bd->bi_immr_base = CONFIG_SYS_IMMR; /* base of IMMR register */
591 #if defined(CONFIG_MPC5xxx) || defined(CONFIG_M68K)
592 bd->bi_mbar_base = CONFIG_SYS_MBAR; /* base of internal registers */
594 #if defined(CONFIG_MPC83xx)
595 bd->bi_immrbar = CONFIG_SYS_IMMR;
602 #if defined(CONFIG_PPC) || defined(CONFIG_M68K)
603 static int setup_board_part2(void)
607 bd->bi_intfreq = gd->cpu_clk; /* Internal Freq, in Hz */
608 bd->bi_busfreq = gd->bus_clk; /* Bus Freq, in Hz */
609 #if defined(CONFIG_CPM2)
610 bd->bi_cpmfreq = gd->arch.cpm_clk;
611 bd->bi_brgfreq = gd->arch.brg_clk;
612 bd->bi_sccfreq = gd->arch.scc_clk;
613 bd->bi_vco = gd->arch.vco_out;
614 #endif /* CONFIG_CPM2 */
615 #if defined(CONFIG_MPC512X)
616 bd->bi_ipsfreq = gd->arch.ips_clk;
617 #endif /* CONFIG_MPC512X */
618 #if defined(CONFIG_MPC5xxx)
619 bd->bi_ipbfreq = gd->arch.ipb_clk;
620 bd->bi_pcifreq = gd->pci_clk;
621 #endif /* CONFIG_MPC5xxx */
622 #if defined(CONFIG_M68K) && defined(CONFIG_PCI)
623 bd->bi_pcifreq = gd->pci_clk;
625 #if defined(CONFIG_EXTRA_CLOCK)
626 bd->bi_inpfreq = gd->arch.inp_clk; /* input Freq in Hz */
627 bd->bi_vcofreq = gd->arch.vco_clk; /* vco Freq in Hz */
628 bd->bi_flbfreq = gd->arch.flb_clk; /* flexbus Freq in Hz */
635 #ifdef CONFIG_SYS_EXTBDINFO
636 static int setup_board_extra(void)
640 strncpy((char *) bd->bi_s_version, "1.2", sizeof(bd->bi_s_version));
641 strncpy((char *) bd->bi_r_version, U_BOOT_VERSION,
642 sizeof(bd->bi_r_version));
644 bd->bi_procfreq = gd->cpu_clk; /* Processor Speed, In Hz */
645 bd->bi_plb_busfreq = gd->bus_clk;
646 #if defined(CONFIG_405GP) || defined(CONFIG_405EP) || \
647 defined(CONFIG_440EP) || defined(CONFIG_440GR) || \
648 defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
649 bd->bi_pci_busfreq = get_PCI_freq();
650 bd->bi_opbfreq = get_OPB_freq();
651 #elif defined(CONFIG_XILINX_405)
652 bd->bi_pci_busfreq = get_PCI_freq();
660 static int init_post(void)
662 post_bootmode_init();
663 post_run(NULL, POST_ROM | post_bootmode_get(0));
669 static int setup_dram_config(void)
671 /* Ram is board specific, so move it to board code ... */
672 dram_init_banksize();
677 static int reloc_fdt(void)
679 #ifndef CONFIG_OF_EMBED
680 if (gd->flags & GD_FLG_SKIP_RELOC)
683 memcpy(gd->new_fdt, gd->fdt_blob, gd->fdt_size);
684 gd->fdt_blob = gd->new_fdt;
691 static int setup_reloc(void)
693 if (gd->flags & GD_FLG_SKIP_RELOC) {
694 debug("Skipping relocation due to flag\n");
698 #ifdef CONFIG_SYS_TEXT_BASE
699 gd->reloc_off = gd->relocaddr - CONFIG_SYS_TEXT_BASE;
702 * On all ColdFire arch cpu, monitor code starts always
703 * just after the default vector table location, so at 0x400
705 gd->reloc_off = gd->relocaddr - (CONFIG_SYS_TEXT_BASE + 0x400);
708 memcpy(gd->new_gd, (char *)gd, sizeof(gd_t));
710 debug("Relocation Offset is: %08lx\n", gd->reloc_off);
711 debug("Relocating to %08lx, new gd at %08lx, sp at %08lx\n",
712 gd->relocaddr, (ulong)map_to_sysmem(gd->new_gd),
718 #ifdef CONFIG_OF_BOARD_FIXUP
719 static int fix_fdt(void)
721 return board_fix_fdt((void *)gd->fdt_blob);
725 /* ARM calls relocate_code from its crt0.S */
726 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) && \
727 !CONFIG_IS_ENABLED(X86_64)
729 static int jump_to_copy(void)
731 if (gd->flags & GD_FLG_SKIP_RELOC)
734 * x86 is special, but in a nice way. It uses a trampoline which
735 * enables the dcache if possible.
737 * For now, other archs use relocate_code(), which is implemented
738 * similarly for all archs. When we do generic relocation, hopefully
739 * we can make all archs enable the dcache prior to relocation.
741 #if defined(CONFIG_X86) || defined(CONFIG_ARC)
743 * SDRAM and console are now initialised. The final stack can now
744 * be setup in SDRAM. Code execution will continue in Flash, but
745 * with the stack in SDRAM and Global Data in temporary memory
748 arch_setup_gd(gd->new_gd);
749 board_init_f_r_trampoline(gd->start_addr_sp);
751 relocate_code(gd->start_addr_sp, gd->new_gd, gd->relocaddr);
758 /* Record the board_init_f() bootstage (after arch_cpu_init()) */
759 static int mark_bootstage(void)
761 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f");
766 static int initf_console_record(void)
768 #if defined(CONFIG_CONSOLE_RECORD) && defined(CONFIG_SYS_MALLOC_F_LEN)
769 return console_record_init();
775 static int initf_dm(void)
777 #if defined(CONFIG_DM) && defined(CONFIG_SYS_MALLOC_F_LEN)
780 ret = dm_init_and_scan(true);
784 #ifdef CONFIG_TIMER_EARLY
785 ret = dm_timer_init();
793 /* Architecture-specific memory reservation */
794 __weak int reserve_arch(void)
799 __weak int arch_cpu_init_dm(void)
804 static const init_fnc_t init_sequence_f[] = {
806 #ifdef CONFIG_OF_CONTROL
813 initf_console_record,
814 #if defined(CONFIG_HAVE_FSP)
817 arch_cpu_init, /* basic arch cpu dependent setup */
818 mach_cpu_init, /* SoC/machine dependent CPU setup */
821 mark_bootstage, /* need timer, go after init dm */
822 #if defined(CONFIG_BOARD_EARLY_INIT_F)
825 #if defined(CONFIG_PPC) || defined(CONFIG_SYS_FSL_CLK) || defined(CONFIG_M68K)
826 /* get CPU and bus clocks according to the environment variable */
827 get_clocks, /* get CPU and bus clocks (etc.) */
829 timer_init, /* initialize timer */
830 #if defined(CONFIG_BOARD_POSTCLK_INIT)
833 env_init, /* initialize environment */
834 init_baud_rate, /* initialze baudrate settings */
835 serial_init, /* serial communications setup */
836 console_init_f, /* stage 1 init of console */
837 display_options, /* say that we are here */
838 display_text_info, /* show debugging info if required */
839 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_SH) || \
843 #if defined(CONFIG_DISPLAY_CPUINFO)
844 print_cpuinfo, /* display cpu info (and speed) */
846 #if defined(CONFIG_DISPLAY_BOARDINFO)
849 INIT_FUNC_WATCHDOG_INIT
850 #if defined(CONFIG_MISC_INIT_F)
853 INIT_FUNC_WATCHDOG_RESET
854 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C)
857 #if defined(CONFIG_HARD_SPI)
861 /* TODO: unify all these dram functions? */
862 #if defined(CONFIG_ARM) || defined(CONFIG_X86) || defined(CONFIG_NDS32) || \
863 defined(CONFIG_MICROBLAZE) || defined(CONFIG_AVR32) || \
865 dram_init, /* configure available RAM banks */
867 #if defined(CONFIG_MIPS) || defined(CONFIG_PPC) || defined(CONFIG_M68K)
873 INIT_FUNC_WATCHDOG_RESET
874 #if defined(CONFIG_SYS_DRAM_TEST)
876 #endif /* CONFIG_SYS_DRAM_TEST */
877 INIT_FUNC_WATCHDOG_RESET
882 INIT_FUNC_WATCHDOG_RESET
884 * Now that we have DRAM mapped and working, we can
885 * relocate the code and continue running from DRAM.
887 * Reserve memory at end of RAM for (top down in that order):
888 * - area that won't get touched by U-Boot and Linux (optional)
889 * - kernel log buffer
893 * - board info struct
896 #if defined(CONFIG_XTENSA)
897 /* Blackfin u-boot monitor should be on top of the ram */
900 #if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR)
907 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) && \
911 #ifdef CONFIG_DM_VIDEO
917 /* TODO: Why the dependency on CONFIG_8xx? */
918 # if defined(CONFIG_VIDEO) && (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) && \
919 !defined(CONFIG_ARM) && !defined(CONFIG_X86) && \
920 !defined(CONFIG_M68K)
921 reserve_legacy_video,
923 #endif /* CONFIG_DM_VIDEO */
925 #if !defined(CONFIG_XTENSA)
928 #ifndef CONFIG_SPL_BUILD
939 #if defined(CONFIG_M68K) || defined(CONFIG_MIPS) || defined(CONFIG_PPC) || \
943 #if defined(CONFIG_PPC) || defined(CONFIG_M68K)
944 INIT_FUNC_WATCHDOG_RESET
948 #ifdef CONFIG_SYS_EXTBDINFO
951 #ifdef CONFIG_OF_BOARD_FIXUP
954 INIT_FUNC_WATCHDOG_RESET
957 #if defined(CONFIG_X86) || defined(CONFIG_ARC)
962 #if defined(CONFIG_XTENSA)
965 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) && \
966 !CONFIG_IS_ENABLED(X86_64)
972 void board_init_f(ulong boot_flags)
974 #ifdef CONFIG_SYS_GENERIC_GLOBAL_DATA
976 * For some architectures, global data is initialized and used before
977 * calling this function. The data should be preserved. For others,
978 * CONFIG_SYS_GENERIC_GLOBAL_DATA should be defined and use the stack
979 * here to host global data until relocation.
986 * Clear global data before it is accessed at debug print
987 * in initcall_run_list. Otherwise the debug print probably
988 * get the wrong value of gd->have_console.
993 gd->flags = boot_flags;
994 gd->have_console = 0;
996 if (initcall_run_list(init_sequence_f))
999 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) && \
1000 !defined(CONFIG_EFI_APP) && !CONFIG_IS_ENABLED(X86_64)
1001 /* NOTREACHED - jump_to_copy() does not return */
1006 #if defined(CONFIG_X86) || defined(CONFIG_ARC)
1008 * For now this code is only used on x86.
1010 * init_sequence_f_r is the list of init functions which are run when
1011 * U-Boot is executing from Flash with a semi-limited 'C' environment.
1012 * The following limitations must be considered when implementing an
1014 * - 'static' variables are read-only
1015 * - Global Data (gd->xxx) is read/write
1017 * The '_f_r' sequence must, as a minimum, copy U-Boot to RAM (if
1018 * supported). It _should_, if possible, copy global data to RAM and
1019 * initialise the CPU caches (to speed up the relocation process)
1021 * NOTE: At present only x86 uses this route, but it is intended that
1022 * all archs will move to this when generic relocation is implemented.
1024 static const init_fnc_t init_sequence_f_r[] = {
1025 #if !CONFIG_IS_ENABLED(X86_64)
1032 void board_init_f_r(void)
1034 if (initcall_run_list(init_sequence_f_r))
1038 * The pre-relocation drivers may be using memory that has now gone
1039 * away. Mark serial as unavailable - this will fall back to the debug
1040 * UART if available.
1042 gd->flags &= ~GD_FLG_SERIAL_READY;
1045 * U-Boot has been copied into SDRAM, the BSS has been cleared etc.
1046 * Transfer execution from Flash to RAM by calculating the address
1047 * of the in-RAM copy of board_init_r() and calling it
1049 (board_init_r + gd->reloc_off)((gd_t *)gd, gd->relocaddr);
1051 /* NOTREACHED - board_init_r() does not return */
1054 #endif /* CONFIG_X86 */