lib_arm.rar_S3C2440 Cac_arm cache_s3c2440_s3c2440 mmu

/* * (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> * * See file CREDITS for list of people who contributed to this * project. * * 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 */ /* * 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 <malloc.h> #include <devices.h> #include <timestamp.h> #include <version.h> #include <net.h> #include <serial.h> #include <nand.h> #include <onenand_uboot.h> #ifdef CONFIG_DRIVER_SMC91111 #include "../drivers/net/smc91111.h" #endif #ifdef CONFIG_DRIVER_LAN91C96 #include "../drivers/net/lan91c96.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 #ifndef CONFIG_IDENT_STRING #define CONFIG_IDENT_STRING "" #endif const char version_string[] = U_BOOT_VERSION" (" U_BOOT_DATE " - " U_BOOT_TIME ")"CONFIG_IDENT_STRING; #ifdef CONFIG_DRIVER_CS8900 extern void cs8900_get_enetaddr (void); #endif #ifdef CONFIG_DRIVER_RTL8019 extern void rtl8019_get_enetaddr (uchar * addr); #endif #if defined(CONFIG_HARD_I2C) || \ defined(CONFIG_SOFT_I2C) #include <i2c.h> #endif /* * Begin and End of memory area for malloc(), and current "brk" */ static ulong mem_malloc_start = 0; static ulong mem_malloc_end = 0; static ulong mem_malloc_brk = 0; static void mem_malloc_init (ulong dest_addr) { mem_malloc_start = dest_addr; mem_malloc_end = dest_addr + CONFIG_SYS_MALLOC_LEN; mem_malloc_brk = mem_malloc_start; memset ((void *) mem_malloc_start, 0, mem_malloc_end - mem_malloc_start); } void *sbrk (ptrdiff_t increment) { ulong old = mem_malloc_brk; ulong new = old + increment; if ((new < mem_malloc_start) || (new > mem_malloc_end)) { return (NULL); } mem_malloc_brk = new; return ((void *) old); } /************************************************************************ * Coloured LED functionality ************************************************************************ * May be supplied by boards if desired */ void inline __coloured_LED_init (void) {} void inline coloured_LED_init (void) __attribute__((weak, alias("__coloured_LED_init"))); void inline __red_LED_on (void) {} void inline red_LED_on (void) __attribute__((weak, alias("__red_LED_on"))); void inline __red_LED_off(void) {} void inline red_LED_off(void) __attribute__((weak, alias("__red_LED_off"))); void inline __green_LED_on(void) {} void inline green_LED_on(void) __attribute__((weak, alias("__green_LED_on"))); void inline __green_LED_off(void) {} void inline green_LED_off(void)__attribute__((weak, alias("__green_LED_off"))); void inline __yellow_LED_on(void) {} void inline yellow_LED_on(void)__attribute__((weak, alias("__yellow_LED_on"))); void inline __yellow_LED_off(void) {} void inline yellow_LED_off(void)__attribute__((weak, alias("__yellow_LED_off"))); /************************************************************************ * 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) { char tmp[64]; /* long enough for environment variables */ int i = getenv_r ("baudrate", tmp, sizeof (tmp)); gd->bd->bi_baudrate = gd->baudrate = (i > 0) ? (int) simple_strtoul (tmp, NULL, 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", _armboot_start, _bss_start, _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); } #ifndef CONFIG_SYS_NO_FLASH static void display_flash_config (ulong size) { puts ("Flash: "); print_size (size, "\n"); } #endif /* CONFIG_SYS_NO_FLASH */ #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C) static int init_func_i2c (void) { puts ("I2C: "); i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); 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); int print_cpuinfo (void); init_fnc_t *init_sequence[] = { cpu_init, /* basic cpu dependent setup */ #if defined(CONFIG_ARCH_CPU_INIT) arch_cpu_init, /* basic arch cpu dependent setup */ #endif board_init, /* basic board dependent setup */ interrupt_init, /* set up exceptions */ 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 */ #if defined(CONFIG_DISPLAY_CPUINFO) print_cpuinfo, /* display cpu info (and speed) */ #endif #if defined(CONFIG_DISPLAY_BOARDINFO) checkboard, /* display board info */ #endif #if defined(CONFIG_HARD