+++ /dev/null
-/*
- * (C) Copyright 2003
- * Josef Baumgartner <josef.baumgartner@telex.de>
- *
- * (C) Copyright 2000-2002
- * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <common.h>
-#include <watchdog.h>
-#include <command.h>
-#include <malloc.h>
-#include <stdio_dev.h>
-#include <linux/compiler.h>
-
-#include <asm/immap.h>
-
-#if defined(CONFIG_CMD_IDE)
-#include <ide.h>
-#endif
-#if defined(CONFIG_CMD_SCSI)
-#include <scsi.h>
-#endif
-#if defined(CONFIG_CMD_KGDB)
-#include <kgdb.h>
-#endif
-#ifdef CONFIG_STATUS_LED
-#include <status_led.h>
-#endif
-#include <net.h>
-#include <serial.h>
-#ifdef CONFIG_SYS_ALLOC_DPRAM
-#include <commproc.h>
-#endif
-#include <version.h>
-
-#if defined(CONFIG_HARD_I2C) || \
- defined(CONFIG_SYS_I2C)
-#include <i2c.h>
-#endif
-
-#ifdef CONFIG_CMD_SPI
-#include <spi.h>
-#endif
-
-#ifdef CONFIG_BITBANGMII
-#include <miiphy.h>
-#endif
-
-#include <nand.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-static char *failed = "*** failed ***\n";
-
-#include <environment.h>
-
-extern ulong __init_end;
-extern ulong __bss_end;
-
-#if defined(CONFIG_WATCHDOG)
-# undef INIT_FUNC_WATCHDOG_INIT
-# define INIT_FUNC_WATCHDOG_INIT watchdog_init,
-# define WATCHDOG_DISABLE watchdog_disable
-
-extern int watchdog_init(void);
-extern int watchdog_disable(void);
-#else
-# define INIT_FUNC_WATCHDOG_INIT /* undef */
-# define WATCHDOG_DISABLE /* undef */
-#endif /* CONFIG_WATCHDOG */
-
-ulong monitor_flash_len;
-
-/************************************************************************
- * Utilities *
- ************************************************************************
- */
-
-/*
- * 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 dependend #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);
-
-/************************************************************************
- * Init Utilities
- ************************************************************************
- * Some of this code should be moved into the core functions,
- * but let's get it working (again) first...
- */
-
-static int init_baudrate (void)
-{
- gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
- return 0;
-}
-
-/***********************************************************************/
-
-static int init_func_ram (void)
-{
- int board_type = 0; /* use dummy arg */
- puts ("DRAM: ");
-
- if ((gd->ram_size = initdram (board_type)) > 0) {
- print_size (gd->ram_size, "\n");
- return (0);
- }
- puts (failed);
- return (1);
-}
-
-/***********************************************************************/
-
-#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_HARD_SPI)
-static int init_func_spi (void)
-{
- puts ("SPI: ");
- spi_init ();
- puts ("ready\n");
- return (0);
-}
-#endif
-
-/***********************************************************************/
-
-/************************************************************************
- * Initialization sequence *
- ************************************************************************
- */
-
-init_fnc_t *init_sequence[] = {
- get_clocks,
- env_init,
- init_baudrate,
- serial_init,
- console_init_f,
- display_options,
- checkcpu,
- checkboard,
-#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C)
- init_func_i2c,
-#endif
-#if defined(CONFIG_HARD_SPI)
- init_func_spi,
-#endif
- init_func_ram,
-#if defined(CONFIG_SYS_DRAM_TEST)
- testdram,
-#endif /* CONFIG_SYS_DRAM_TEST */
- INIT_FUNC_WATCHDOG_INIT
- NULL, /* Terminate this list */
-};
-
-
-/************************************************************************
- *
- * This is the first part of the initialization sequence that is
- * implemented in C, but still running from ROM.
- *
- * The main purpose is to provide a (serial) console interface as
- * soon as possible (so we can see any error messages), and to
- * initialize the RAM so that we can relocate the monitor code to
- * RAM.
- *
- * Be aware of the restrictions: global data is read-only, BSS is not
- * initialized, and stack space is limited to a few kB.
- *
- ************************************************************************
- */
-
-void
-board_init_f (ulong bootflag)
-{
- bd_t *bd;
- ulong len, addr, addr_sp;
- ulong *paddr;
- gd_t *id;
- init_fnc_t **init_fnc_ptr;
-#ifdef CONFIG_PRAM
- ulong reg;
-#endif
-
- /* Pointer is writable since we allocated a register for it */
- gd = (gd_t *) (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET);
- /* compiler optimization barrier needed for GCC >= 3.4 */
- __asm__ __volatile__("": : :"memory");
-
- /* Clear initial global data */
- memset ((void *) gd, 0, sizeof (gd_t));
-
- for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
- if ((*init_fnc_ptr)() != 0) {
- hang ();
- }
- }
-
- /*
- * 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):
- * - protected RAM
- * - LCD framebuffer
- * - monitor code
- * - board info struct
- */
- len = (ulong)&__bss_end - CONFIG_SYS_MONITOR_BASE;
-
- addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
-
-#ifdef CONFIG_LOGBUFFER
- /* reserve kernel log buffer */
- addr -= (LOGBUFF_RESERVE);
- debug ("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN, addr);
-#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 */
-
- /* 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 -= len;
- addr &= ~(4096 - 1);
-
- debug ("Reserving %ldk for U-Boot at: %08lx\n", len >> 10, addr);
-
- /*
- * 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);
- 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);
-
- /* Reserve memory for boot params. */
- addr_sp -= CONFIG_SYS_BOOTPARAMS_LEN;
- bd->bi_boot_params = addr_sp;
- debug ("Reserving %dk for boot parameters at: %08lx\n",
- CONFIG_SYS_BOOTPARAMS_LEN >> 10, addr_sp);
-
- /*
- * Finally, we set up a new (bigger) stack.
- *
- * Leave some safety gap for SP, force alignment on 16 byte boundary
- * Clear initial stack frame
- */
- addr_sp -= 16;
- addr_sp &= ~0xF;
-
- paddr = (ulong *)addr_sp;
- *paddr-- = 0;
- *paddr-- = 0;
- addr_sp = (ulong)paddr;
-
- debug ("Stack Pointer at: %08lx\n", addr_sp);
-
- /*
- * Save local variables to board info struct
- */
- bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; /* start of DRAM memory */
- bd->bi_memsize = gd->ram_size; /* size of DRAM memory in bytes */
-#ifdef CONFIG_SYS_INIT_RAM_ADDR
- bd->bi_sramstart = CONFIG_SYS_INIT_RAM_ADDR; /* start of SRAM memory */
- bd->bi_sramsize = CONFIG_SYS_INIT_RAM_SIZE; /* size of SRAM memory */
-#endif
- bd->bi_mbar_base = CONFIG_SYS_MBAR; /* base of internal registers */
-
- bd->bi_bootflags = bootflag; /* boot / reboot flag (for LynxOS) */
-
- WATCHDOG_RESET ();
- bd->bi_intfreq = gd->cpu_clk; /* Internal Freq, in Hz */
- bd->bi_busfreq = gd->bus_clk; /* Bus Freq, in Hz */
-#ifdef CONFIG_PCI
- bd->bi_pcifreq = gd->pci_clk; /* PCI Freq in Hz */
-#endif
-#ifdef 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
-
-#ifdef CONFIG_SYS_EXTBDINFO
- strncpy (bd->bi_s_version, "1.2", sizeof (bd->bi_s_version));
- strncpy (bd->bi_r_version, U_BOOT_VERSION, sizeof (bd->bi_r_version));
-#endif
-
- WATCHDOG_RESET ();
-
-#ifdef CONFIG_POST
- post_bootmode_init();
- post_run (NULL, POST_ROM | post_bootmode_get(0));
-#endif
-
- WATCHDOG_RESET();
-
- memcpy (id, (void *)gd, sizeof (gd_t));
-
- debug ("Start relocate of code from %08x to %08lx\n", CONFIG_SYS_MONITOR_BASE, addr);
- relocate_code (addr_sp, id, addr);
-
- /* NOTREACHED - jump_to_ram() does not return */
-}
-
-/************************************************************************
- *
- * 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)
-{
- char *s __maybe_unused;
- bd_t *bd;
-
-#ifndef CONFIG_ENV_IS_NOWHERE
- extern char * env_name_spec;
-#endif
-#ifndef CONFIG_SYS_NO_FLASH
- ulong flash_size;
-#endif
- gd = id; /* initialize RAM version of global data */
- bd = gd->bd;
-
- gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
-
- WATCHDOG_RESET ();
-
- gd->reloc_off = dest_addr - CONFIG_SYS_MONITOR_BASE;
-
- serial_initialize();
-
- debug("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
-
- monitor_flash_len = (ulong)&__init_end - dest_addr;
-
-#if defined(CONFIG_NEEDS_MANUAL_RELOC)
- /*
- * We have to relocate the command table manually
- */
- fixup_cmdtable(ll_entry_start(cmd_tbl_t, cmd),
- ll_entry_count(cmd_tbl_t, cmd));
-#endif /* defined(CONFIG_NEEDS_MANUAL_RELOC) */
-
- /* there are some other pointer constants we must deal with */
-#ifndef CONFIG_ENV_IS_NOWHERE
- env_name_spec += gd->reloc_off;
-#endif
-
- WATCHDOG_RESET ();
-
-#ifdef CONFIG_LOGBUFFER
- logbuff_init_ptrs ();
-#endif
-#ifdef CONFIG_POST
- post_output_backlog ();
- post_reloc ();
-#endif
- WATCHDOG_RESET();
-
-#if 0
- /* instruction cache enabled in cpu_init_f() for faster relocation */
- icache_enable (); /* it's time to enable the instruction cache */
-#endif
-
- /*
- * Setup trap handlers
- */
- trap_init (CONFIG_SYS_SDRAM_BASE);
-
- /* The Malloc area is immediately below the monitor copy in DRAM */
- mem_malloc_init (CONFIG_SYS_MONITOR_BASE + gd->reloc_off -
- TOTAL_MALLOC_LEN, TOTAL_MALLOC_LEN);
-
-#if !defined(CONFIG_SYS_NO_FLASH)
- puts ("Flash: ");
-
- if ((flash_size = flash_init ()) > 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 ();
- }
-
- bd->bi_flashstart = CONFIG_SYS_FLASH_BASE; /* update start of FLASH memory */
- bd->bi_flashsize = flash_size; /* size of FLASH memory (final value) */
- bd->bi_flashoffset = 0;
-#else /* CONFIG_SYS_NO_FLASH */
- bd->bi_flashsize = 0;
- bd->bi_flashstart = 0;
- bd->bi_flashoffset = 0;
-#endif /* !CONFIG_SYS_NO_FLASH */
-
- WATCHDOG_RESET ();
-
- /* initialize higher level parts of CPU like time base and timers */
- cpu_init_r ();
-
- WATCHDOG_RESET ();
-
-#ifdef CONFIG_SPI
-# if !defined(CONFIG_ENV_IS_IN_EEPROM)
- spi_init_f ();
-# endif
- spi_init_r ();
-#endif
-
-#if defined(CONFIG_SYS_I2C)
- /* Adjust I2C subsystem pointers after relocation */
- i2c_reloc_fixup();
-#endif
-
- /* relocate environment function pointers etc. */
- env_relocate ();
-
- WATCHDOG_RESET ();
-
-#if defined(CONFIG_PCI)
- /*
- * Do pci configuration
- */
- pci_init ();
-#endif
-
- /** leave this here (after malloc(), environment and PCI are working) **/
- /* Initialize stdio devices */
- stdio_init ();
-
- /* Initialize the jump table for applications */
- jumptable_init ();
-
- /* Initialize the console (after the relocation and devices init) */
- console_init_r ();
-
-#if defined(CONFIG_MISC_INIT_R)
- /* miscellaneous platform dependent initialisations */
- misc_init_r ();
-#endif
-
-#if defined(CONFIG_CMD_KGDB)
- WATCHDOG_RESET ();
- puts ("KGDB: ");
- kgdb_init ();
-#endif
-
- debug ("U-Boot relocated to %08lx\n", dest_addr);
-
- /*
- * Enable Interrupts
- */
- interrupt_init ();
-
- /* Must happen after interrupts are initialized since
- * an irq handler gets installed
- */
- timer_init();
-
-#ifdef CONFIG_STATUS_LED
- status_led_set (STATUS_LED_BOOT, STATUS_LED_BLINKING);
-#endif
-
- udelay (20);
-
- /* Insert function pointers now that we have relocated the code */
-
- /* Initialize from environment */
- load_addr = getenv_ulong("loadaddr", 16, load_addr);
-
- WATCHDOG_RESET ();
-
-#if defined(CONFIG_CMD_DOC)
- WATCHDOG_RESET ();
- puts ("DOC: ");
- doc_init ();
-#endif
-
-#if defined(CONFIG_CMD_NAND)
- WATCHDOG_RESET ();
- puts ("NAND: ");
- nand_init(); /* go init the NAND */
-#endif
-
-#ifdef CONFIG_BITBANGMII
- bb_miiphy_init();
-#endif
-#if defined(CONFIG_CMD_NET)
- WATCHDOG_RESET();
-#if defined(FEC_ENET)
- eth_init(bd);
-#endif
- puts ("Net: ");
- eth_initialize (bd);
-#endif
-
-#ifdef CONFIG_POST
- post_run (NULL, POST_RAM | post_bootmode_get(0));
-#endif
-
-#if defined(CONFIG_CMD_PCMCIA) \
- && !defined(CONFIG_CMD_IDE)
- WATCHDOG_RESET ();
- puts ("PCMCIA:");
- pcmcia_init ();
-#endif
-
-#if defined(CONFIG_CMD_IDE)
- WATCHDOG_RESET ();
- puts ("IDE: ");
- ide_init ();
-#endif
-
-#ifdef CONFIG_LAST_STAGE_INIT
- WATCHDOG_RESET ();
- /*
- * Some parts can be only initialized if all others (like
- * Interrupts) are up and running (i.e. the PC-style ISA
- * keyboard).
- */
- last_stage_init ();
-#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;
- char memsz[32];
-
-#ifdef CONFIG_PRAM
- pram = getenv_ulong("pram", 10, CONFIG_PRAM);
-#endif
-#ifdef CONFIG_LOGBUFFER
- /* Also take the logbuffer into account (pram is in kB) */
- pram += (LOGBUFF_LEN+LOGBUFF_OVERHEAD)/1024;
-#endif
- sprintf (memsz, "%ldk", (bd->bi_memsize / 1024) - pram);
- setenv ("mem", memsz);
- }
-#endif
-
-#ifdef CONFIG_WATCHDOG
- /* disable watchdog if environment is set */
- if ((s = getenv ("watchdog")) != NULL) {
- if (strncmp (s, "off", 3) == 0) {
- WATCHDOG_DISABLE ();
- }
- }
-#endif /* CONFIG_WATCHDOG*/
-
-
- /* Initialization complete - start the monitor */
-
- /* main_loop() can return to retry autoboot, if so just run it again. */
- for (;;) {
- WATCHDOG_RESET ();
- main_loop ();
- }
-
- /* NOTREACHED - no way out of command loop except booting */
-}
projects / u-boot.git / commitdiff