/* * Copyright (C) 2007,2008 * Nobuhiro Iwamatsu <iwamatsu@nigauri.org> * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ #include <common.h> #include <command.h> #include <malloc.h> #include <stdio_dev.h> #include <timestamp.h> #include <version.h> #include <watchdog.h> #include <net.h> #include <environment.h> extern void malloc_bin_reloc (void); extern int cpu_init(void); extern int board_init(void); extern int dram_init(void); extern int timer_init(void); const char version_string[] = U_BOOT_VERSION" ("U_BOOT_DATE" - "U_BOOT_TIME")"; unsigned long monitor_flash_len = CONFIG_SYS_MONITOR_LEN; static unsigned long mem_malloc_start; static unsigned long mem_malloc_end; static unsigned long mem_malloc_brk; static void mem_malloc_init(void) { mem_malloc_start = (TEXT_BASE - CONFIG_SYS_GBL_DATA_SIZE - CONFIG_SYS_MALLOC_LEN); mem_malloc_end = (mem_malloc_start + CONFIG_SYS_MALLOC_LEN - 16); mem_malloc_brk = mem_malloc_start; memset((void *) mem_malloc_start, 0, (mem_malloc_end - mem_malloc_start)); } void *sbrk(ptrdiff_t increment) { unsigned long old = mem_malloc_brk; unsigned long new = old + increment; if ((new < mem_malloc_start) || (new > mem_malloc_end)) { return NULL; } mem_malloc_brk = new; return (void *) old; } static int sh_flash_init(void) { DECLARE_GLOBAL_DATA_PTR; gd->bd->bi_flashsize = flash_init(); printf("FLASH: %ldMB\n", gd->bd->bi_flashsize / (1024*1024)); return 0; } #if defined(CONFIG_CMD_NAND) # include <nand.h> # define INIT_FUNC_NAND_INIT nand_init, #else # define INIT_FUNC_NAND_INIT #endif /* CONFIG_CMD_NAND */ #if defined(CONFIG_WATCHDOG) extern int watchdog_init(void); extern int watchdog_disable(void); # define INIT_FUNC_WATCHDOG_INIT watchdog_init, # define WATCHDOG_DISABLE watchdog_disable #else # define INIT_FUNC_WATCHDOG_INIT # define WATCHDOG_DISABLE #endif /* CONFIG_WATCHDOG */ #if defined(CONFIG_CMD_IDE) # include <ide.h> # define INIT_FUNC_IDE_INIT ide_init, #else # define INIT_FUNC_IDE_INIT #endif /* CONFIG_CMD_IDE */ #if defined(CONFIG_PCI) #include <pci.h> static int sh_pci_init(void) { pci_init(); return 0; } # define INIT_FUNC_PCI_INIT sh_pci_init, #else # define INIT_FUNC_PCI_INIT #endif /* CONFIG_PCI */ static int sh_mem_env_init(void) { mem_malloc_init(); malloc_bin_reloc(); env_relocate(); jumptable_init(); return 0; } #if defined(CONFIG_CMD_NET) static int sh_net_init(void) { DECLARE_GLOBAL_DATA_PTR; gd->bd->bi_ip_addr = getenv_IPaddr("ipaddr"); return 0; } #endif typedef int (init_fnc_t) (void); init_fnc_t *init_sequence[] = { cpu_init, /* basic cpu dependent setup */ board_init, /* basic board dependent setup */ interrupt_init, /* set up exceptions */ env_init, /* event init */ serial_init, /* SCIF init */ INIT_FUNC_WATCHDOG_INIT /* watchdog init */ console_init_f, display_options, checkcpu, checkboard, /* Check support board */ dram_init, /* SDRAM init */ timer_init, /* SuperH Timer (TCNT0 only) init */ sh_mem_env_init, sh_flash_init, /* Flash memory(NOR) init*/ INIT_FUNC_NAND_INIT/* Flash memory (NAND) init */ INIT_FUNC_PCI_INIT /* PCI init */ stdio_init, console_init_r, interrupt_init, #ifdef BOARD_LATE_INIT board_late_init, #endif #if defined(CONFIG_CMD_NET) sh_net_init, /* SH specific eth init */ #endif NULL /* Terminate this list */ }; void sh_generic_init(void) { DECLARE_GLOBAL_DATA_PTR; bd_t *bd; init_fnc_t **init_fnc_ptr; memset(gd, 0, CONFIG_SYS_GBL_DATA_SIZE); gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */ gd->bd = (bd_t *)(gd + 1); /* At end of global data */ gd->baudrate = CONFIG_BAUDRATE; gd->cpu_clk = CONFIG_SYS_CLK_FREQ; bd = gd->bd; bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; bd->bi_memsize = CONFIG_SYS_SDRAM_SIZE; bd->bi_flashstart = CONFIG_SYS_FLASH_BASE; #if defined(CONFIG_SYS_SRAM_BASE) && defined(CONFIG_SYS_SRAM_SIZE) bd->bi_sramstart = CONFIG_SYS_SRAM_BASE; bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE; #endif bd->bi_baudrate = CONFIG_BAUDRATE; for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) { WATCHDOG_RESET(); if ((*init_fnc_ptr) () != 0) hang(); } #ifdef CONFIG_WATCHDOG /* disable watchdog if environment is set */ { char *s = getenv("watchdog"); if (s != NULL) if (strncmp(s, "off", 3) == 0) WATCHDOG_DISABLE(); } #endif /* CONFIG_WATCHDOG*/ #if defined(CONFIG_CMD_NET) { char *s; puts("Net: "); eth_initialize(gd->bd); s = getenv("bootfile"); if (s != NULL) copy_filename(BootFile, s, sizeof(BootFile)); } #endif /* CONFIG_CMD_NET */ while (1) { WATCHDOG_RESET(); main_loop(); } } /***********************************************************************/ void hang(void) { puts("Board ERROR\n"); for (;;) ; }