+++ /dev/null
-/*
- * (C) Copyright 2003
- * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <common.h>
-#include <command.h>
-#include <malloc.h>
-#include <serial.h>
-#include <stdio_dev.h>
-#include <version.h>
-#include <net.h>
-#include <environment.h>
-#include <nand.h>
-#include <onenand_uboot.h>
-#include <spi.h>
-
-#ifdef CONFIG_BITBANGMII
-#include <miiphy.h>
-#endif
-
-DECLARE_GLOBAL_DATA_PTR;
-
-ulong monitor_flash_len;
-
-static char *failed = "*** failed ***\n";
-
-int __board_early_init_f(void)
-{
- /*
- * Nothing to do in this dummy implementation
- */
- return 0;
-}
-int board_early_init_f(void)
- __attribute__((weak, alias("__board_early_init_f")));
-
-static int init_func_ram(void)
-{
-#ifdef CONFIG_BOARD_TYPES
- int board_type = gd->board_type;
-#else
- int board_type = 0; /* use dummy arg */
-#endif
- puts("DRAM: ");
-
- gd->ram_size = initdram(board_type);
- if (gd->ram_size > 0) {
- print_size(gd->ram_size, "\n");
- return 0;
- }
- puts(failed);
- return 1;
-}
-
-static int display_banner(void)
-{
-
- printf("\n\n%s\n\n", version_string);
- return 0;
-}
-
-#ifndef CONFIG_SYS_NO_FLASH
-static void display_flash_config(ulong size)
-{
- puts("Flash: ");
- print_size(size, "\n");
-}
-#endif
-
-static int init_baudrate(void)
-{
- gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
- return 0;
-}
-
-
-/*
- * Breath some life into the board...
- *
- * 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 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_fnc_t *init_sequence[] = {
- board_early_init_f,
- timer_init,
- env_init, /* initialize environment */
- init_baudrate, /* initialize baudrate settings */
- serial_init, /* serial communications setup */
- console_init_f,
- display_banner, /* say that we are here */
- checkboard,
- init_func_ram,
- NULL,
-};
-
-
-void board_init_f(ulong bootflag)
-{
- gd_t gd_data, *id;
- bd_t *bd;
- init_fnc_t **init_fnc_ptr;
- ulong addr, addr_sp, len;
- ulong *s;
-
- /* Pointer is writable since we allocated a register for it.
- */
- gd = &gd_data;
- /* compiler optimization barrier needed for GCC >= 3.4 */
- __asm__ __volatile__("" : : : "memory");
-
- 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.
- */
- addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
-
- /* We can reserve some RAM "on top" here.
- */
-
- /* round down to next 4 kB limit.
- */
- addr &= ~(4096 - 1);
- debug("Top of RAM usable for U-Boot at: %08lx\n", addr);
-
- /* Reserve memory for U-Boot code, data & bss
- * round down to next 16 kB limit
- */
- len = bss_end() - CONFIG_SYS_MONITOR_BASE;
- addr -= len;
- addr &= ~(16 * 1024 - 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 params() 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;
- s = (ulong *)addr_sp;
- *s-- = 0;
- *s-- = 0;
- addr_sp = (ulong)s;
- 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 */
- bd->bi_memsize = gd->ram_size; /* size of DRAM in bytes */
-
- memcpy(id, (void *)gd, sizeof(gd_t));
-
- relocate_code(addr_sp, id, addr);
-
- /* NOTREACHED - relocate_code() 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)
-{
-#ifndef CONFIG_SYS_NO_FLASH
- ulong size;
-#endif
- bd_t *bd;
-
- gd = id;
- gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
-
- debug("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
-
- gd->reloc_off = dest_addr - CONFIG_SYS_MONITOR_BASE;
-
- monitor_flash_len = image_copy_end() - dest_addr;
-
- serial_initialize();
-
- bd = gd->bd;
-
- /* 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);
-
-#ifndef CONFIG_SYS_NO_FLASH
- /* configure available FLASH banks */
- size = flash_init();
- display_flash_config(size);
- bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
- bd->bi_flashsize = size;
-
-#if CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
- bd->bi_flashoffset = monitor_flash_len; /* reserved area for U-Boot */
-#else
- bd->bi_flashoffset = 0;
-#endif
-#else
- bd->bi_flashstart = 0;
- bd->bi_flashsize = 0;
- bd->bi_flashoffset = 0;
-#endif
-
-#ifdef CONFIG_CMD_NAND
- puts("NAND: ");
- nand_init(); /* go init the NAND */
-#endif
-
-#if defined(CONFIG_CMD_ONENAND)
- onenand_init();
-#endif
-
- /* relocate environment function pointers etc. */
- env_relocate();
-
-#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();
-
- jumptable_init();
-
- /* Initialize the console (after the relocation and devices init) */
- console_init_r();
-/** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** **/
-
- /* Initialize from environment */
- load_addr = getenv_ulong("loadaddr", 16, load_addr);
-
-#ifdef CONFIG_CMD_SPI
- puts("SPI: ");
- spi_init(); /* go init the SPI */
- puts("ready\n");
-#endif
-
-#if defined(CONFIG_MISC_INIT_R)
- /* miscellaneous platform dependent initialisations */
- misc_init_r();
-#endif
-
-#ifdef CONFIG_BITBANGMII
- bb_miiphy_init();
-#endif
-#if defined(CONFIG_CMD_NET)
- puts("Net: ");
- eth_initialize(gd->bd);
-#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 / u-boot.git / commitdiff