+++ /dev/null
-/*
- * (C) Copyright 2002-2006
- * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * (C) Copyright 2002
- * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
- * Marius Groeger <mgroeger@sysgo.de>
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-/*
- * To match the U-Boot user interface on ARM platforms to the U-Boot
- * standard (as on PPC platforms), some messages with debug character
- * are removed from the default U-Boot build.
- *
- * Define DEBUG here if you want additional info as shown below
- * printed upon startup:
- *
- * U-Boot code: 00F00000 -> 00F3C774 BSS: -> 00FC3274
- * IRQ Stack: 00ebff7c
- * FIQ Stack: 00ebef7c
- */
-
-#include <common.h>
-#include <command.h>
-#include <environment.h>
-#include <malloc.h>
-#include <stdio_dev.h>
-#include <version.h>
-#include <net.h>
-#include <serial.h>
-#include <nand.h>
-#include <onenand_uboot.h>
-#include <mmc.h>
-#include <scsi.h>
-#include <status_led.h>
-#include <libfdt.h>
-#include <fdtdec.h>
-#include <post.h>
-#include <logbuff.h>
-#include <asm/sections.h>
-
-#ifdef CONFIG_BITBANGMII
-#include <miiphy.h>
-#endif
-
-DECLARE_GLOBAL_DATA_PTR;
-
-ulong monitor_flash_len;
-
-#ifdef CONFIG_HAS_DATAFLASH
-extern int AT91F_DataflashInit(void);
-extern void dataflash_print_info(void);
-#endif
-
-#if defined(CONFIG_HARD_I2C) || \
- defined(CONFIG_SYS_I2C)
-#include <i2c.h>
-#endif
-
-/************************************************************************
- * 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) {}
-
-/*
- ************************************************************************
- * Init Utilities *
- ************************************************************************
- * Some of this code should be moved into the core functions,
- * or dropped completely,
- * but let's get it working (again) first...
- */
-
-#if defined(CONFIG_ARM_DCC) && !defined(CONFIG_BAUDRATE)
-#define CONFIG_BAUDRATE 115200
-#endif
-
-static int init_baudrate(void)
-{
- gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
- return 0;
-}
-
-static int display_banner(void)
-{
- printf("\n\n%s\n\n", version_string);
- debug("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
- (ulong)&_start,
- (ulong)&__bss_start, (ulong)&__bss_end);
-#ifdef CONFIG_MODEM_SUPPORT
- debug("Modem Support enabled\n");
-#endif
-#ifdef CONFIG_USE_IRQ
- debug("IRQ Stack: %08lx\n", IRQ_STACK_START);
- debug("FIQ Stack: %08lx\n", FIQ_STACK_START);
-#endif
-
- return (0);
-}
-
-/*
- * WARNING: this code looks "cleaner" than the PowerPC version, but
- * has the disadvantage that you either get nothing, or everything.
- * On PowerPC, you might see "DRAM: " before the system hangs - which
- * gives a simple yet clear indication which part of the
- * initialization if failing.
- */
-static int display_dram_config(void)
-{
- int i;
-
-#ifdef DEBUG
- puts("RAM Configuration:\n");
-
- for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
- printf("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
- print_size(gd->bd->bi_dram[i].size, "\n");
- }
-#else
- ulong size = 0;
-
- for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++)
- size += gd->bd->bi_dram[i].size;
-
- puts("DRAM: ");
- print_size(size, "\n");
-#endif
-
- return (0);
-}
-
-#if defined(CONFIG_HARD_I2C) || 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_CMD_PCI) || defined (CONFIG_PCI)
-#include <pci.h>
-static int arm_pci_init(void)
-{
- pci_init();
- return 0;
-}
-#endif /* CONFIG_CMD_PCI || CONFIG_PCI */
-
-/*
- * Breathe some life into the board...
- *
- * Initialize a serial port as console, and carry out some hardware
- * tests.
- *
- * The first part of initialization is running from Flash memory;
- * its main purpose is to initialize the RAM so that we
- * can relocate the monitor code to RAM.
- */
-
-/*
- * All attempts to come up with a "common" initialization sequence
- * that works for all boards and architectures failed: some of the
- * requirements are just _too_ different. To get rid of the resulting
- * mess of board dependent #ifdef'ed code we now make the whole
- * initialization sequence configurable to the user.
- *
- * The requirements for any new initalization function is simple: it
- * receives a pointer to the "global data" structure as it's only
- * argument, and returns an integer return code, where 0 means
- * "continue" and != 0 means "fatal error, hang the system".
- */
-typedef int (init_fnc_t) (void);
-
-__weak void dram_init_banksize(void)
-{
- gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
- gd->bd->bi_dram[0].size = gd->ram_size;
-}
-
-__weak int arch_cpu_init(void)
-{
- return 0;
-}
-
-__weak int power_init_board(void)
-{
- return 0;
-}
-
- /* Record the board_init_f() bootstage (after arch_cpu_init()) */
-static int mark_bootstage(void)
-{
- bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f");
-
- return 0;
-}
-
-init_fnc_t *init_sequence[] = {
- arch_cpu_init, /* basic arch cpu dependent setup */
- mark_bootstage,
-#ifdef CONFIG_OF_CONTROL
- fdtdec_check_fdt,
-#endif
-#if defined(CONFIG_BOARD_EARLY_INIT_F)
- board_early_init_f,
-#endif
- timer_init, /* initialize timer */
-#ifdef CONFIG_BOARD_POSTCLK_INIT
- board_postclk_init,
-#endif
-#ifdef CONFIG_FSL_ESDHC
- get_clocks,
-#endif
- env_init, /* initialize environment */
- init_baudrate, /* initialze baudrate settings */
- serial_init, /* serial communications setup */
- console_init_f, /* stage 1 init of console */
- display_banner, /* say that we are here */
- print_cpuinfo, /* display cpu info (and speed) */
-#if defined(CONFIG_DISPLAY_BOARDINFO)
- checkboard, /* display board info */
-#endif
-#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C)
- init_func_i2c,
-#endif
- dram_init, /* configure available RAM banks */
- NULL,
-};
-
-void board_init_f(ulong bootflag)
-{
- bd_t *bd;
- init_fnc_t **init_fnc_ptr;
- gd_t *id;
- ulong addr, addr_sp;
-#ifdef CONFIG_PRAM
- ulong reg;
-#endif
- void *new_fdt = NULL;
- size_t fdt_size = 0;
-
- memset((void *)gd, 0, sizeof(gd_t));
-
- gd->mon_len = (ulong)&__bss_end - (ulong)_start;
-#ifdef CONFIG_OF_EMBED
- /* Get a pointer to the FDT */
- gd->fdt_blob = __dtb_dt_begin;
-#elif defined CONFIG_OF_SEPARATE
- /* FDT is at end of image */
- gd->fdt_blob = &_end;
-#endif
- /* Allow the early environment to override the fdt address */
- gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
- (uintptr_t)gd->fdt_blob);
-
- for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
- if ((*init_fnc_ptr)() != 0) {
- hang ();
- }
- }
-
-#ifdef CONFIG_OF_CONTROL
- /* For now, put this check after the console is ready */
- if (fdtdec_prepare_fdt()) {
- panic("** CONFIG_OF_CONTROL defined but no FDT - please see "
- "doc/README.fdt-control");
- }
-#endif
-
- debug("monitor len: %08lX\n", gd->mon_len);
- /*
- * Ram is setup, size stored in gd !!
- */
- debug("ramsize: %08lX\n", 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
-
- addr = CONFIG_SYS_SDRAM_BASE + get_effective_memsize();
-
-#ifdef CONFIG_LOGBUFFER
-#ifndef CONFIG_ALT_LB_ADDR
- /* reserve kernel log buffer */
- addr -= (LOGBUFF_RESERVE);
- debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN,
- addr);
-#endif
-#endif
-
-#ifdef CONFIG_PRAM
- /*
- * reserve protected RAM
- */
- reg = getenv_ulong("pram", 10, CONFIG_PRAM);
- addr -= (reg << 10); /* size is in kB */
- debug("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
-#endif /* CONFIG_PRAM */
-
-#if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
- /* reserve TLB table */
- gd->arch.tlb_size = PGTABLE_SIZE;
- addr -= gd->arch.tlb_size;
-
- /* round down to next 64 kB limit */
- addr &= ~(0x10000 - 1);
-
- gd->arch.tlb_addr = addr;
- debug("TLB table from %08lx to %08lx\n", addr, addr + gd->arch.tlb_size);
-#endif
-
- /* round down to next 4 kB limit */
- addr &= ~(4096 - 1);
- debug("Top of RAM usable for U-Boot at: %08lx\n", addr);
-
-#ifdef CONFIG_LCD
-#ifdef CONFIG_FB_ADDR
- gd->fb_base = CONFIG_FB_ADDR;
-#else
- /* reserve memory for LCD display (always full pages) */
- addr = lcd_setmem(addr);
- gd->fb_base = addr;
-#endif /* CONFIG_FB_ADDR */
-#endif /* CONFIG_LCD */
-
- /*
- * reserve memory for U-Boot code, data & bss
- * round down to next 4 kB limit
- */
- addr -= gd->mon_len;
- addr &= ~(4096 - 1);
-
- debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10, addr);
-
-#ifndef CONFIG_SPL_BUILD
- /*
- * reserve memory for malloc() arena
- */
- addr_sp = addr - TOTAL_MALLOC_LEN;
- debug("Reserving %dk for malloc() at: %08lx\n",
- TOTAL_MALLOC_LEN >> 10, addr_sp);
- /*
- * (permanently) allocate a Board Info struct
- * and a permanent copy of the "global" data
- */
- addr_sp -= sizeof (bd_t);
- bd = (bd_t *) addr_sp;
- gd->bd = bd;
- debug("Reserving %zu Bytes for Board Info at: %08lx\n",
- sizeof (bd_t), addr_sp);
-
-#ifdef CONFIG_MACH_TYPE
- gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
-#endif
-
- addr_sp -= sizeof (gd_t);
- id = (gd_t *) addr_sp;
- debug("Reserving %zu Bytes for Global Data at: %08lx\n",
- sizeof (gd_t), addr_sp);
-
-#if defined(CONFIG_OF_SEPARATE) && defined(CONFIG_OF_CONTROL)
- /*
- * If the device tree is sitting immediate 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) {
- fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
-
- addr_sp -= fdt_size;
- new_fdt = (void *)addr_sp;
- debug("Reserving %zu Bytes for FDT at: %08lx\n",
- fdt_size, addr_sp);
- }
-#endif
-
-#ifndef CONFIG_ARM64
- /* setup stackpointer for exeptions */
- gd->irq_sp = addr_sp;
-#ifdef CONFIG_USE_IRQ
- addr_sp -= (CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ);
- debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
- CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ, addr_sp);
-#endif
- /* leave 3 words for abort-stack */
- addr_sp -= 12;
-
- /* 8-byte alignment for ABI compliance */
- addr_sp &= ~0x07;
-#else /* CONFIG_ARM64 */
- /* 16-byte alignment for ABI compliance */
- addr_sp &= ~0x0f;
-#endif /* CONFIG_ARM64 */
-#else
- addr_sp += 128; /* leave 32 words for abort-stack */
- gd->irq_sp = addr_sp;
-#endif
-
- debug("New Stack Pointer is: %08lx\n", addr_sp);
-
-#ifdef CONFIG_POST
- post_bootmode_init();
- post_run(NULL, POST_ROM | post_bootmode_get(0));
-#endif
-
- /* Ram ist board specific, so move it to board code ... */
- dram_init_banksize();
- display_dram_config(); /* and display it */
-
- gd->relocaddr = addr;
- gd->start_addr_sp = addr_sp;
- gd->reloc_off = addr - (ulong)&_start;
- debug("relocation Offset is: %08lx\n", gd->reloc_off);
- if (new_fdt) {
- memcpy(new_fdt, gd->fdt_blob, fdt_size);
- gd->fdt_blob = new_fdt;
- }
- memcpy(id, (void *)gd, sizeof(gd_t));
-}
-
-#if !defined(CONFIG_SYS_NO_FLASH)
-static char *failed = "*** failed ***\n";
-#endif
-
-/*
- * Tell if it's OK to load the environment early in boot.
- *
- * If CONFIG_OF_CONFIG is defined, we'll check with the FDT to see
- * if this is OK (defaulting to saying it's not OK).
- *
- * NOTE: Loading the environment early can be a bad idea if security is
- * important, since no verification is done on the environment.
- *
- * @return 0 if environment should not be loaded, !=0 if it is ok to load
- */
-static int should_load_env(void)
-{
-#ifdef CONFIG_OF_CONTROL
- return fdtdec_get_config_int(gd->fdt_blob, "load-environment", 1);
-#elif defined CONFIG_DELAY_ENVIRONMENT
- return 0;
-#else
- return 1;
-#endif
-}
-
-#if defined(CONFIG_DISPLAY_BOARDINFO_LATE) && defined(CONFIG_OF_CONTROL)
-static void display_fdt_model(const void *blob)
-{
- const char *model;
-
- model = (char *)fdt_getprop(blob, 0, "model", NULL);
- printf("Model: %s\n", model ? model : "<unknown>");
-}
-#endif
-
-/************************************************************************
- *
- * This is the next part if the initialization sequence: we are now
- * running from RAM and have a "normal" C environment, i. e. global
- * data can be written, BSS has been cleared, the stack size in not
- * that critical any more, etc.
- *
- ************************************************************************
- */
-
-void board_init_r(gd_t *id, ulong dest_addr)
-{
- ulong malloc_start;
-#if !defined(CONFIG_SYS_NO_FLASH)
- ulong flash_size;
-#endif
-
- gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
- bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
-
- monitor_flash_len = (ulong)&__rel_dyn_end - (ulong)_start;
-
- /* Enable caches */
- enable_caches();
-
- debug("monitor flash len: %08lX\n", monitor_flash_len);
- board_init(); /* Setup chipselects */
- /*
- * TODO: printing of the clock inforamtion of the board is now
- * implemented as part of bdinfo command. Currently only support for
- * davinci SOC's is added. Remove this check once all the board
- * implement this.
- */
-#ifdef CONFIG_CLOCKS
- set_cpu_clk_info(); /* Setup clock information */
-#endif
- serial_initialize();
-
- debug("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
-
-#ifdef CONFIG_LOGBUFFER
- logbuff_init_ptrs();
-#endif
-#ifdef CONFIG_POST
- post_output_backlog();
-#endif
-
- /* The Malloc area is immediately below the monitor copy in DRAM */
- malloc_start = dest_addr - TOTAL_MALLOC_LEN;
- mem_malloc_init (malloc_start, TOTAL_MALLOC_LEN);
-
-#ifdef CONFIG_ARCH_EARLY_INIT_R
- arch_early_init_r();
-#endif
- power_init_board();
-
-#if !defined(CONFIG_SYS_NO_FLASH)
- puts("Flash: ");
-
- flash_size = flash_init();
- if (flash_size > 0) {
-# ifdef CONFIG_SYS_FLASH_CHECKSUM
- print_size(flash_size, "");
- /*
- * Compute and print flash CRC if flashchecksum is set to 'y'
- *
- * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
- */
- if (getenv_yesno("flashchecksum") == 1) {
- printf(" CRC: %08X", crc32(0,
- (const unsigned char *) CONFIG_SYS_FLASH_BASE,
- flash_size));
- }
- putc('\n');
-# else /* !CONFIG_SYS_FLASH_CHECKSUM */
- print_size(flash_size, "\n");
-# endif /* CONFIG_SYS_FLASH_CHECKSUM */
- } else {
- puts(failed);
- hang();
- }
-#endif
-
-#if defined(CONFIG_CMD_NAND)
- puts("NAND: ");
- nand_init(); /* go init the NAND */
-#endif
-
-#if defined(CONFIG_CMD_ONENAND)
- onenand_init();
-#endif
-
-#ifdef CONFIG_GENERIC_MMC
- puts("MMC: ");
- mmc_initialize(gd->bd);
-#endif
-
-#ifdef CONFIG_CMD_SCSI
- puts("SCSI: ");
- scsi_init();
-#endif
-
-#ifdef CONFIG_HAS_DATAFLASH
- AT91F_DataflashInit();
- dataflash_print_info();
-#endif
-
- /* initialize environment */
- if (should_load_env())
- env_relocate();
- else
- set_default_env(NULL);
-
-#if defined(CONFIG_CMD_PCI) || defined(CONFIG_PCI)
- arm_pci_init();
-#endif
-
- stdio_init(); /* get the devices list going. */
-
- jumptable_init();
-
-#if defined(CONFIG_API)
- /* Initialize API */
- api_init();
-#endif
-
- console_init_r(); /* fully init console as a device */
-
-#ifdef CONFIG_DISPLAY_BOARDINFO_LATE
-# ifdef CONFIG_OF_CONTROL
- /* Put this here so it appears on the LCD, now it is ready */
- display_fdt_model(gd->fdt_blob);
-# else
- checkboard();
-# endif
-#endif
-
-#if defined(CONFIG_ARCH_MISC_INIT)
- /* miscellaneous arch dependent initialisations */
- arch_misc_init();
-#endif
-#if defined(CONFIG_MISC_INIT_R)
- /* miscellaneous platform dependent initialisations */
- misc_init_r();
-#endif
-
- /* set up exceptions */
- interrupt_init();
- /* enable exceptions */
- enable_interrupts();
-
- /* Initialize from environment */
- load_addr = getenv_ulong("loadaddr", 16, load_addr);
-
-#ifdef CONFIG_BOARD_LATE_INIT
- board_late_init();
-#endif
-
-#ifdef CONFIG_BITBANGMII
- bb_miiphy_init();
-#endif
-#if defined(CONFIG_CMD_NET)
- puts("Net: ");
- eth_initialize();
-#if defined(CONFIG_RESET_PHY_R)
- debug("Reset Ethernet PHY\n");
- reset_phy();
-#endif
-#endif
-
-#ifdef CONFIG_POST
- post_run(NULL, POST_RAM | post_bootmode_get(0));
-#endif
-
-#if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
- /*
- * Export available size of memory for Linux,
- * taking into account the protected RAM at top of memory
- */
- {
- ulong pram = 0;
- uchar memsz[32];
-
-#ifdef CONFIG_PRAM
- pram = getenv_ulong("pram", 10, CONFIG_PRAM);
-#endif
-#ifdef CONFIG_LOGBUFFER
-#ifndef CONFIG_ALT_LB_ADDR
- /* Also take the logbuffer into account (pram is in kB) */
- pram += (LOGBUFF_LEN + LOGBUFF_OVERHEAD) / 1024;
-#endif
-#endif
- sprintf((char *)memsz, "%ldk", (gd->ram_size / 1024) - pram);
- setenv("mem", (char *)memsz);
- }
-#endif
-
- /* main_loop() can return to retry autoboot, if so just run it again. */
- for (;;) {
- main_loop();
- }
-
- /* NOTREACHED - no way out of command loop except booting */
-}
projects / platform / kernel / u-boot.git / commitdiff