/* * Copyright (c) 2011 The Chromium OS Authors. * (C) Copyright 2002-2006 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * (C) Copyright 2002 * Sysgo Real-Time Solutions, GmbH * Marius Groeger * * SPDX-License-Identifier: GPL-2.0+ */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef CONFIG_MACH_TYPE #include #endif #if defined(CONFIG_MP) && defined(CONFIG_PPC) #include #endif #include #include #include #include /* * Pointer to initial global data area * * Here we initialize it if needed. */ #ifdef XTRN_DECLARE_GLOBAL_DATA_PTR #undef XTRN_DECLARE_GLOBAL_DATA_PTR #define XTRN_DECLARE_GLOBAL_DATA_PTR /* empty = allocate here */ DECLARE_GLOBAL_DATA_PTR = (gd_t *) (CONFIG_SYS_INIT_GD_ADDR); #else DECLARE_GLOBAL_DATA_PTR; #endif /* * TODO(sjg@chromium.org): IMO this code should be * refactored to a single function, something like: * * void led_set_state(enum led_colour_t colour, int on); */ /************************************************************************ * Coloured LED functionality ************************************************************************ * May be supplied by boards if desired */ __weak void coloured_LED_init(void) {} __weak void red_led_on(void) {} __weak void red_led_off(void) {} __weak void green_led_on(void) {} __weak void green_led_off(void) {} __weak void yellow_led_on(void) {} __weak void yellow_led_off(void) {} __weak void blue_led_on(void) {} __weak void blue_led_off(void) {} /* * Why is gd allocated a register? Prior to reloc it might be better to * just pass it around to each function in this file? * * After reloc one could argue that it is hardly used and doesn't need * to be in a register. Or if it is it should perhaps hold pointers to all * global data for all modules, so that post-reloc we can avoid the massive * literal pool we get on ARM. Or perhaps just encourage each module to use * a structure... */ #if defined(CONFIG_WATCHDOG) || defined(CONFIG_HW_WATCHDOG) static int init_func_watchdog_init(void) { # if defined(CONFIG_HW_WATCHDOG) && \ (defined(CONFIG_M68K) || defined(CONFIG_MICROBLAZE) || \ defined(CONFIG_SH) || defined(CONFIG_AT91SAM9_WATCHDOG) || \ defined(CONFIG_DESIGNWARE_WATCHDOG) || \ defined(CONFIG_IMX_WATCHDOG)) hw_watchdog_init(); puts(" Watchdog enabled\n"); # endif WATCHDOG_RESET(); return 0; } int init_func_watchdog_reset(void) { WATCHDOG_RESET(); return 0; } #endif /* CONFIG_WATCHDOG */ __weak void board_add_ram_info(int use_default) { /* please define platform specific board_add_ram_info() */ } static int init_baud_rate(void) { gd->baudrate = env_get_ulong("baudrate", 10, CONFIG_BAUDRATE); return 0; } static int display_text_info(void) { #if !defined(CONFIG_SANDBOX) && !defined(CONFIG_EFI_APP) ulong bss_start, bss_end, text_base; bss_start = (ulong)&__bss_start; bss_end = (ulong)&__bss_end; #ifdef CONFIG_SYS_TEXT_BASE text_base = CONFIG_SYS_TEXT_BASE; #else text_base = CONFIG_SYS_MONITOR_BASE; #endif debug("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n", text_base, bss_start, bss_end); #endif return 0; } static int announce_dram_init(void) { puts("DRAM: "); return 0; } static int show_dram_config(void) { unsigned long long size; #ifdef CONFIG_NR_DRAM_BANKS int i; debug("\nRAM Configuration:\n"); for (i = size = 0; i < CONFIG_NR_DRAM_BANKS; i++) { size += gd->bd->bi_dram[i].size; debug("Bank #%d: %llx ", i, (unsigned long long)(gd->bd->bi_dram[i].start)); #ifdef DEBUG print_size(gd->bd->bi_dram[i].size, "\n"); #endif } debug("\nDRAM: "); #else size = gd->ram_size; #endif print_size(size, ""); board_add_ram_info(0); putc('\n'); return 0; } __weak int dram_init_banksize(void) { #if defined(CONFIG_NR_DRAM_BANKS) && defined(CONFIG_SYS_SDRAM_BASE) gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE; gd->bd->bi_dram[0].size = get_effective_memsize(); #endif return 0; } #if defined(CONFIG_SYS_I2C) static int init_func_i2c(void) { puts("I2C: "); #ifdef CONFIG_SYS_I2C i2c_init_all(); #else i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); #endif puts("ready\n"); return 0; } #endif #if defined(CONFIG_VID) __weak int init_func_vid(void) { return 0; } #endif #if defined(CONFIG_HARD_SPI) static int init_func_spi(void) { puts("SPI: "); spi_init(); puts("ready\n"); return 0; } #endif static int setup_mon_len(void) { #if defined(__ARM__) || defined(__MICROBLAZE__) gd->mon_len = (ulong)&__bss_end - (ulong)_start; #elif defined(CONFIG_SANDBOX) || defined(CONFIG_EFI_APP) gd->mon_len = (ulong)&_end - (ulong)_init; #elif defined(CONFIG_NIOS2) || defined(CONFIG_XTENSA) gd->mon_len = CONFIG_SYS_MONITOR_LEN; #elif defined(CONFIG_NDS32) || defined(CONFIG_SH) || defined(CONFIG_RISCV) gd->mon_len = (ulong)(&__bss_end) - (ulong)(&_start); #elif defined(CONFIG_SYS_MONITOR_BASE) /* TODO: use (ulong)&__bss_end - (ulong)&__text_start; ? */ gd->mon_len = (ulong)&__bss_end - CONFIG_SYS_MONITOR_BASE; #endif return 0; } __weak int arch_cpu_init(void) { return 0; } __weak int mach_cpu_init(void) { return 0; } /* Get the top of usable RAM */ __weak ulong board_get_usable_ram_top(ulong total_size) { #ifdef CONFIG_SYS_SDRAM_BASE /* * Detect whether we have so much RAM that it goes past the end of our * 32-bit address space. If so, clip the usable RAM so it doesn't. */ if (gd->ram_top < CONFIG_SYS_SDRAM_BASE) /* * Will wrap back to top of 32-bit space when reservations * are made. */ return 0; #endif return gd->ram_top; } static int setup_dest_addr(void) { debug("Monitor len: %08lX\n", gd->mon_len); /* * Ram is setup, size stored in gd !! */ debug("Ram size: %08lX\n", (ulong)gd->ram_size); #if defined(CONFIG_SYS_MEM_TOP_HIDE) /* * Subtract specified amount of memory to hide so that it won't * get "touched" at all by U-Boot. By fixing up gd->ram_size * the Linux kernel should now get passed the now "corrected" * memory size and won't touch it either. This should work * for arch/ppc and arch/powerpc. Only Linux board ports in * arch/powerpc with bootwrapper support, that recalculate the * memory size from the SDRAM controller setup will have to * get fixed. */ gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE; #endif #ifdef CONFIG_SYS_SDRAM_BASE gd->ram_top = CONFIG_SYS_SDRAM_BASE; #endif gd->ram_top += get_effective_memsize(); gd->ram_top = board_get_usable_ram_top(gd->mon_len); gd->relocaddr = gd->ram_top; debug("Ram top: %08lX\n", (ulong)gd->ram_top); #if defined(CONFIG_MP) && (defined(CONFIG_MPC86xx) || defined(CONFIG_E500)) /* * We need to make sure the location we intend to put secondary core * boot code is reserved and not used by any part of u-boot */ if (gd->relocaddr > determine_mp_bootpg(NULL)) { gd->relocaddr = determine_mp_bootpg(NULL); debug("Reserving MP boot page to %08lx\n", gd->relocaddr); } #endif return 0; } #ifdef CONFIG_PRAM /* reserve protected RAM */ static int reserve_pram(void) { ulong reg; reg = env_get_ulong("pram", 10, CONFIG_PRAM); gd->relocaddr -= (reg << 10); /* size is in kB */ debug("Reserving %ldk for protected RAM at %08lx\n", reg, gd->relocaddr); return 0; } #endif /* CONFIG_PRAM */ /* Round memory pointer down to next 4 kB limit */ static int reserve_round_4k(void) { gd->relocaddr &= ~(4096 - 1); return 0; } #ifdef CONFIG_ARM __weak int reserve_mmu(void) { #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) /* reserve TLB table */ gd->arch.tlb_size = PGTABLE_SIZE; gd->relocaddr -= gd->arch.tlb_size; /* round down to next 64 kB limit */ gd->relocaddr &= ~(0x10000 - 1); gd->arch.tlb_addr = gd->relocaddr; debug("TLB table from %08lx to %08lx\n", gd->arch.tlb_addr, gd->arch.tlb_addr + gd->arch.tlb_size); #ifdef CONFIG_SYS_MEM_RESERVE_SECURE /* * Record allocated tlb_addr in case gd->tlb_addr to be overwritten * with location within secure ram. */ gd->arch.tlb_allocated = gd->arch.tlb_addr; #endif #endif return 0; } #endif static int reserve_video(void) { #ifdef CONFIG_DM_VIDEO ulong addr; int ret; addr = gd->relocaddr; ret = video_reserve(&addr); if (ret) return ret; gd->relocaddr = addr; #elif defined(CONFIG_LCD) # ifdef CONFIG_FB_ADDR gd->fb_base = CONFIG_FB_ADDR; # else /* reserve memory for LCD display (always full pages) */ gd->relocaddr = lcd_setmem(gd->relocaddr); gd->fb_base = gd->relocaddr; # endif /* CONFIG_FB_ADDR */ #elif defined(CONFIG_VIDEO) && \ (!defined(CONFIG_PPC)) && \ !defined(CONFIG_ARM) && !defined(CONFIG_X86) && \ !defined(CONFIG_M68K) /* reserve memory for video display (always full pages) */ gd->relocaddr = video_setmem(gd->relocaddr); gd->fb_base = gd->relocaddr; #endif return 0; } static int reserve_trace(void) { #ifdef CONFIG_TRACE gd->relocaddr -= CONFIG_TRACE_BUFFER_SIZE; gd->trace_buff = map_sysmem(gd->relocaddr, CONFIG_TRACE_BUFFER_SIZE); debug("Reserving %dk for trace data at: %08lx\n", CONFIG_TRACE_BUFFER_SIZE >> 10, gd->relocaddr); #endif return 0; } static int reserve_uboot(void) { /* * reserve memory for U-Boot code, data & bss * round down to next 4 kB limit */ gd->relocaddr -= gd->mon_len; gd->relocaddr &= ~(4096 - 1); #if defined(CONFIG_E500) || defined(CONFIG_MIPS) /* round down to next 64 kB limit so that IVPR stays aligned */ gd->relocaddr &= ~(65536 - 1); #endif debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10, gd->relocaddr); gd->start_addr_sp = gd->relocaddr; return 0; } /* reserve memory for malloc() area */ static int reserve_malloc(void) { gd->start_addr_sp = gd->start_addr_sp - TOTAL_MALLOC_LEN; debug("Reserving %dk for malloc() at: %08lx\n", TOTAL_MALLOC_LEN >> 10, gd->start_addr_sp); return 0; } /* (permanently) allocate a Board Info struct */ static int reserve_board(void) { if (!gd->bd) { gd->start_addr_sp -= sizeof(bd_t); gd->bd = (bd_t *)map_sysmem(gd->start_addr_sp, sizeof(bd_t)); memset(gd->bd, '\0', sizeof(bd_t)); debug("Reserving %zu Bytes for Board Info at: %08lx\n", sizeof(bd_t), gd->start_addr_sp); } return 0; } static int setup_machine(void) { #ifdef CONFIG_MACH_TYPE gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */ #endif return 0; } static int reserve_global_data(void) { gd->start_addr_sp -= sizeof(gd_t); gd->new_gd = (gd_t *)map_sysmem(gd->start_addr_sp, sizeof(gd_t)); debug("Reserving %zu Bytes for Global Data at: %08lx\n", sizeof(gd_t), gd->start_addr_sp); return 0; } static int reserve_fdt(void) { #ifndef CONFIG_OF_EMBED /* * If the device tree is sitting immediately above our image then we * must relocate it. If it is embedded in the data section, then it * will be relocated with other data. */ if (gd->fdt_blob) { gd->fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32); gd->start_addr_sp -= gd->fdt_size; gd->new_fdt = map_sysmem(gd->start_addr_sp, gd->fdt_size); debug("Reserving %lu Bytes for FDT at: %08lx\n", gd->fdt_size, gd->start_addr_sp); } #endif return 0; } static int reserve_bootstage(void) { #ifdef CONFIG_BOOTSTAGE int size = bootstage_get_size(); gd->start_addr_sp -= size; gd->new_bootstage = map_sysmem(gd->start_addr_sp, size); debug("Reserving %#x Bytes for bootstage at: %08lx\n", size, gd->start_addr_sp); #endif return 0; } int arch_reserve_stacks(void) { return 0; } static int reserve_stacks(void) { /* make stack pointer 16-byte aligned */ gd->start_addr_sp -= 16; gd->start_addr_sp &= ~0xf; /* * let the architecture-specific code tailor gd->start_addr_sp and * gd->irq_sp */ return arch_reserve_stacks(); } static int display_new_sp(void) { debug("New Stack Pointer is: %08lx\n", gd->start_addr_sp); return 0; } #if defined(CONFIG_M68K) || defined(CONFIG_MIPS) || defined(CONFIG_PPC) || \ defined(CONFIG_SH) static int setup_board_part1(void) { bd_t *bd = gd->bd; /* * Save local variables to board info struct */ bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; /* start of memory */ bd->bi_memsize = gd->ram_size; /* size in bytes */ #ifdef CONFIG_SYS_SRAM_BASE bd->bi_sramstart = CONFIG_SYS_SRAM_BASE; /* start of SRAM */ bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE; /* size of SRAM */ #endif #if defined(CONFIG_E500) || defined(CONFIG_MPC86xx) bd->bi_immr_base = CONFIG_SYS_IMMR; /* base of IMMR register */ #endif #if defined(CONFIG_M68K) bd->bi_mbar_base = CONFIG_SYS_MBAR; /* base of internal registers */ #endif #if defined(CONFIG_MPC83xx) bd->bi_immrbar = CONFIG_SYS_IMMR; #endif return 0; } #endif #if defined(CONFIG_PPC) || defined(CONFIG_M68K) static int setup_board_part2(void) { bd_t *bd = gd->bd; bd->bi_intfreq = gd->cpu_clk; /* Internal Freq, in Hz */ bd->bi_busfreq = gd->bus_clk; /* Bus Freq, in Hz */ #if defined(CONFIG_CPM2) bd->bi_cpmfreq = gd->arch.cpm_clk; bd->bi_brgfreq = gd->arch.brg_clk; bd->bi_sccfreq = gd->arch.scc_clk; bd->bi_vco = gd->arch.vco_out; #endif /* CONFIG_CPM2 */ #if defined(CONFIG_M68K) && defined(CONFIG_PCI) bd->bi_pcifreq = gd->pci_clk; #endif #if defined(CONFIG_EXTRA_CLOCK) bd->bi_inpfreq = gd->arch.inp_clk; /* input Freq in Hz */ bd->bi_vcofreq = gd->arch.vco_clk; /* vco Freq in Hz */ bd->bi_flbfreq = gd->arch.flb_clk; /* flexbus Freq in Hz */ #endif return 0; } #endif #ifdef CONFIG_POST static int init_post(void) { post_bootmode_init(); post_run(NULL, POST_ROM | post_bootmode_get(0)); return 0; } #endif static int reloc_fdt(void) { #ifndef CONFIG_OF_EMBED if (gd->flags & GD_FLG_SKIP_RELOC) return 0; if (gd->new_fdt) { memcpy(gd->new_fdt, gd->fdt_blob, gd->fdt_size); gd->fdt_blob = gd->new_fdt; } #endif return 0; } static int reloc_bootstage(void) { #ifdef CONFIG_BOOTSTAGE if (gd->flags & GD_FLG_SKIP_RELOC) return 0; if (gd->new_bootstage) { int size = bootstage_get_size(); debug("Copying bootstage from %p to %p, size %x\n", gd->bootstage, gd->new_bootstage, size); memcpy(gd->new_bootstage, gd->bootstage, size); gd->bootstage = gd->new_bootstage; } #endif return 0; } static int setup_reloc(void) { if (gd->flags & GD_FLG_SKIP_RELOC) { debug("Skipping relocation due to flag\n"); return 0; } #ifdef CONFIG_SYS_TEXT_BASE #ifdef ARM gd->reloc_off = gd->relocaddr - (unsigned long)__image_copy_start; #elif defined(CONFIG_M68K) /* * On all ColdFire arch cpu, monitor code starts always * just after the default vector table location, so at 0x400 */ gd->reloc_off = gd->relocaddr - (CONFIG_SYS_TEXT_BASE + 0x400); #else gd->reloc_off = gd->relocaddr - CONFIG_SYS_TEXT_BASE; #endif #endif memcpy(gd->new_gd, (char *)gd, sizeof(gd_t)); debug("Relocation Offset is: %08lx\n", gd->reloc_off); debug("Relocating to %08lx, new gd at %08lx, sp at %08lx\n", gd->relocaddr, (ulong)map_to_sysmem(gd->new_gd), gd->start_addr_sp); return 0; } #ifdef CONFIG_OF_BOARD_FIXUP static int fix_fdt(void) { return board_fix_fdt((void *)gd->fdt_blob); } #endif /* ARM calls relocate_code from its crt0.S */ #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) && \ !CONFIG_IS_ENABLED(X86_64) static int jump_to_copy(void) { if (gd->flags & GD_FLG_SKIP_RELOC) return 0; /* * x86 is special, but in a nice way. It uses a trampoline which * enables the dcache if possible. * * For now, other archs use relocate_code(), which is implemented * similarly for all archs. When we do generic relocation, hopefully * we can make all archs enable the dcache prior to relocation. */ #if defined(CONFIG_X86) || defined(CONFIG_ARC) /* * SDRAM and console are now initialised. The final stack can now * be setup in SDRAM. Code execution will continue in Flash, but * with the stack in SDRAM and Global Data in temporary memory * (CPU cache) */ arch_setup_gd(gd->new_gd); board_init_f_r_trampoline(gd->start_addr_sp); #else relocate_code(gd->start_addr_sp, gd->new_gd, gd->relocaddr); #endif return 0; } #endif /* Record the board_init_f() bootstage (after arch_cpu_init()) */ static int initf_bootstage(void) { bool from_spl = IS_ENABLED(CONFIG_SPL_BOOTSTAGE) && IS_ENABLED(CONFIG_BOOTSTAGE_STASH); int ret; ret = bootstage_init(!from_spl); if (ret) return ret; if (from_spl) { const void *stash = map_sysmem(CONFIG_BOOTSTAGE_STASH_ADDR, CONFIG_BOOTSTAGE_STASH_SIZE); ret = bootstage_unstash(stash, CONFIG_BOOTSTAGE_STASH_SIZE); if (ret && ret != -ENOENT) { debug("Failed to unstash bootstage: err=%d\n", ret); return ret; } } bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f"); return 0; } static int initf_console_record(void) { #if defined(CONFIG_CONSOLE_RECORD) && CONFIG_VAL(SYS_MALLOC_F_LEN) return console_record_init(); #else return 0; #endif } static int initf_dm(void) { #if defined(CONFIG_DM) && CONFIG_VAL(SYS_MALLOC_F_LEN) int ret; bootstage_start(BOOTSTATE_ID_ACCUM_DM_F, "dm_f"); ret = dm_init_and_scan(true); bootstage_accum(BOOTSTATE_ID_ACCUM_DM_F); if (ret) return ret; #endif #ifdef CONFIG_TIMER_EARLY ret = dm_timer_init(); if (ret) return ret; #endif return 0; } /* Architecture-specific memory reservation */ __weak int reserve_arch(void) { return 0; } __weak int arch_cpu_init_dm(void) { return 0; } static const init_fnc_t init_sequence_f[] = { setup_mon_len, #ifdef CONFIG_OF_CONTROL fdtdec_setup, #endif #ifdef CONFIG_TRACE trace_early_init, #endif initf_malloc, log_init, initf_bootstage, /* uses its own timer, so does not need DM */ initf_console_record, #if defined(CONFIG_HAVE_FSP) arch_fsp_init, #endif arch_cpu_init, /* basic arch cpu dependent setup */ mach_cpu_init, /* SoC/machine dependent CPU setup */ initf_dm, arch_cpu_init_dm, #if defined(CONFIG_BOARD_EARLY_INIT_F) board_early_init_f, #endif #if defined(CONFIG_PPC) || defined(CONFIG_SYS_FSL_CLK) || defined(CONFIG_M68K) /* get CPU and bus clocks according to the environment variable */ get_clocks, /* get CPU and bus clocks (etc.) */ #endif #if !defined(CONFIG_M68K) timer_init, /* initialize timer */ #endif #if defined(CONFIG_BOARD_POSTCLK_INIT) board_postclk_init, #endif env_init, /* initialize environment */ init_baud_rate, /* initialze baudrate settings */ serial_init, /* serial communications setup */ console_init_f, /* stage 1 init of console */ display_options, /* say that we are here */ display_text_info, /* show debugging info if required */ #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_SH) || \ defined(CONFIG_X86) checkcpu, #endif #if defined(CONFIG_DISPLAY_CPUINFO) print_cpuinfo, /* display cpu info (and speed) */ #endif #if defined(CONFIG_DTB_RESELECT) embedded_dtb_select, #endif #if defined(CONFIG_DISPLAY_BOARDINFO) show_board_info, #endif INIT_FUNC_WATCHDOG_INIT #if defined(CONFIG_MISC_INIT_F) misc_init_f, #endif INIT_FUNC_WATCHDOG_RESET #if defined(CONFIG_SYS_I2C) init_func_i2c, #endif #if defined(CONFIG_VID) && !defined(CONFIG_SPL) init_func_vid, #endif #if defined(CONFIG_HARD_SPI) init_func_spi, #endif announce_dram_init, dram_init, /* configure available RAM banks */ #ifdef CONFIG_POST post_init_f, #endif INIT_FUNC_WATCHDOG_RESET #if defined(CONFIG_SYS_DRAM_TEST) testdram, #endif /* CONFIG_SYS_DRAM_TEST */ INIT_FUNC_WATCHDOG_RESET #ifdef CONFIG_POST init_post, #endif INIT_FUNC_WATCHDOG_RESET /* * Now that we have DRAM mapped and working, we can * relocate the code and continue running from DRAM. * * Reserve memory at end of RAM for (top down in that order): * - area that won't get touched by U-Boot and Linux (optional) * - kernel log buffer * - protected RAM * - LCD framebuffer * - monitor code * - board info struct */ setup_dest_addr, #ifdef CONFIG_PRAM reserve_pram, #endif reserve_round_4k, #ifdef CONFIG_ARM reserve_mmu, #endif reserve_video, reserve_trace, reserve_uboot, reserve_malloc, reserve_board, setup_machine, reserve_global_data, reserve_fdt, reserve_bootstage, reserve_arch, reserve_stacks, dram_init_banksize, show_dram_config, #if defined(CONFIG_M68K) || defined(CONFIG_MIPS) || defined(CONFIG_PPC) || \ defined(CONFIG_SH) setup_board_part1, #endif #if defined(CONFIG_PPC) || defined(CONFIG_M68K) INIT_FUNC_WATCHDOG_RESET setup_board_part2, #endif display_new_sp, #ifdef CONFIG_OF_BOARD_FIXUP fix_fdt, #endif INIT_FUNC_WATCHDOG_RESET reloc_fdt, reloc_bootstage, setup_reloc, #if defined(CONFIG_X86) || defined(CONFIG_ARC) copy_uboot_to_ram, do_elf_reloc_fixups, clear_bss, #endif #if defined(CONFIG_XTENSA) clear_bss, #endif #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) && \ !CONFIG_IS_ENABLED(X86_64) jump_to_copy, #endif NULL, }; void board_init_f(ulong boot_flags) { gd->flags = boot_flags; gd->have_console = 0; if (initcall_run_list(init_sequence_f)) hang(); #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) && \ !defined(CONFIG_EFI_APP) && !CONFIG_IS_ENABLED(X86_64) /* NOTREACHED - jump_to_copy() does not return */ hang(); #endif } #if defined(CONFIG_X86) || defined(CONFIG_ARC) /* * For now this code is only used on x86. * * init_sequence_f_r is the list of init functions which are run when * U-Boot is executing from Flash with a semi-limited 'C' environment. * The following limitations must be considered when implementing an * '_f_r' function: * - 'static' variables are read-only * - Global Data (gd->xxx) is read/write * * The '_f_r' sequence must, as a minimum, copy U-Boot to RAM (if * supported). It _should_, if possible, copy global data to RAM and * initialise the CPU caches (to speed up the relocation process) * * NOTE: At present only x86 uses this route, but it is intended that * all archs will move to this when generic relocation is implemented. */ static const init_fnc_t init_sequence_f_r[] = { #if !CONFIG_IS_ENABLED(X86_64) init_cache_f_r, #endif NULL, }; void board_init_f_r(void) { if (initcall_run_list(init_sequence_f_r)) hang(); /* * The pre-relocation drivers may be using memory that has now gone * away. Mark serial as unavailable - this will fall back to the debug * UART if available. * * Do the same with log drivers since the memory may not be available. */ gd->flags &= ~(GD_FLG_SERIAL_READY | GD_FLG_LOG_READY); #ifdef CONFIG_TIMER gd->timer = NULL; #endif /* * U-Boot has been copied into SDRAM, the BSS has been cleared etc. * Transfer execution from Flash to RAM by calculating the address * of the in-RAM copy of board_init_r() and calling it */ (board_init_r + gd->reloc_off)((gd_t *)gd, gd->relocaddr); /* NOTREACHED - board_init_r() does not return */ hang(); } #endif /* CONFIG_X86 */