Add support for the Samsung SMDK2440 development board Index: u-boot/Makefile =================================================================== --- u-boot.orig/Makefile +++ u-boot/Makefile @@ -2035,6 +2035,9 @@ smdk2410_config : unconfig @$(MKCONFIG) $(@:_config=) arm arm920t smdk2410 NULL s3c24x0 +smdk2440_config : unconfig + @$(MKCONFIG) $(@:_config=) arm arm920t smdk2440 NULL s3c24x0 + SX1_config : unconfig @$(MKCONFIG) $(@:_config=) arm arm925t sx1 Index: u-boot/include/configs/smdk2440.h =================================================================== --- /dev/null +++ u-boot/include/configs/smdk2440.h @@ -0,0 +1,296 @@ +/* + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH + * Marius Groeger + * Gary Jennejohn + * David Mueller + * + * Configuation settings for the SAMSUNG SMDK2440 board. + * + * 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 + */ + +#ifndef __CONFIG_H +#define __CONFIG_H + +#if 0 +/* If we want to start u-boot from usb bootloader in NOR flash */ +#define CONFIG_SKIP_RELOCATE_UBOOT 1 +#define CONFIG_SKIP_LOWLEVEL_INIT 1 +#else +/* If we want to start u-boot directly from within NAND flash */ +#define CONFIG_LL_INIT_NAND_ONLY +#define CONFIG_S3C2410_NAND_BOOT 1 +#define CONFIG_S3C2410_NAND_SKIP_BAD 1 +#endif + +#define CFG_UBOOT_SIZE 0x40000 /* size of u-boot, for NAND loading */ + +/* + * High Level Configuration Options + * (easy to change) + */ +#define CONFIG_ARM920T 1 /* This is an ARM920T Core */ +#define CONFIG_S3C2440 1 /* in a SAMSUNG S3C2440 SoC */ +#define CONFIG_SMDK2440 1 /* on a SAMSUNG SMDK2440 Board */ + +/* input clock of PLL */ +#define CONFIG_SYS_CLK_FREQ 16934400/* SMDK2440 has 16.9344MHz input clock */ + + +#define USE_920T_MMU 1 +#define CONFIG_USE_IRQ 1 +//#undef CONFIG_USE_IRQ /* we don't need IRQ/FIQ stuff */ + +/* + * Size of malloc() pool + */ +#define CFG_MALLOC_LEN (CFG_ENV_SIZE + 2048*1024) +#define CFG_GBL_DATA_SIZE 128 /* size in bytes reserved for initial data */ + +/* + * Hardware drivers + */ +#define CONFIG_DRIVER_CS8900 1 /* we have a CS8900 on-board */ +#define CS8900_BASE 0x19000300 +#define CS8900_BUS16 1 /* the Linux driver does accesses as shorts */ + +/* + * select serial console configuration + */ +#define CONFIG_SERIAL1 1 /* we use SERIAL 1 on SMDK2440 */ +#define CONFIG_HWFLOW 1 + +/************************************************************ + * RTC + ************************************************************/ +#define CONFIG_RTC_S3C24X0 1 + +/* allow to overwrite serial and ethaddr */ +#define CONFIG_ENV_OVERWRITE + +#define CONFIG_BAUDRATE 115200 + +/*********************************************************** + * Command definition + ***********************************************************/ +#define CONFIG_COMMANDS \ + (CONFIG_CMD_DFL | \ + /*CFG_CMD_BSP | */ \ + CFG_CMD_CACHE | \ + CFG_CMD_DATE | \ + /*CFG_CMD_DHCP | */ \ + CFG_CMD_DIAG | \ + CFG_CMD_ELF | \ + CFG_CMD_EXT2 | \ + CFG_CMD_FAT | \ + /*CFG_CMD_HWFLOW | */ \ + /* CFG_CMD_IDE | */ \ + /* CFG_CMD_IRQ | */ \ + CFG_CMD_JFFS2 | \ + CFG_CMD_MMC | \ + CFG_CMD_NAND | \ + CFG_CMD_PING | \ + CFG_CMD_PORTIO | \ + CFG_CMD_REGINFO | \ + CFG_CMD_SAVES | \ + CFG_CMD_USB) + +/* this must be included AFTER the definition of CONFIG_COMMANDS (if any) */ +#include + +#define CONFIG_BOOTDELAY 3 +#define CONFIG_BOOTARGS "root=/dev/mtdblock4 rootfstype=jffs2 console=ttySAC2,115200 loglevel=8" +#define CONFIG_ETHADDR 00:0c:20:02:0a:5b +#define CONFIG_NETMASK 255.255.255.0 +#define CONFIG_IPADDR 192.168.1.100 +#define CONFIG_SERVERIP 192.168.1.21 +/*#define CONFIG_BOOTFILE "elinos-lart" */ +//#define CONFIG_BOOTCOMMAND "nand read 0x32000000 0x34000 0x200000; bootm" +#define CONFIG_BOOTCOMMAND "nand read.e 0x32000000 0x100000 0x200000; bootm" + +#define CONFIG_DOS_PARTITION 1 + +#if (CONFIG_COMMANDS & CFG_CMD_KGDB) +#define CONFIG_KGDB_BAUDRATE 115200 /* speed to run kgdb serial port */ +/* what's this ? it's not used anywhere */ +#define CONFIG_KGDB_SER_INDEX 1 /* which serial port to use */ +#endif + +/* + * Miscellaneous configurable options + */ +#define CFG_LONGHELP /* undef to save memory */ +#define CFG_PROMPT "SMDK2440 # " /* Monitor Command Prompt */ +#define CFG_CBSIZE 256 /* Console I/O Buffer Size */ +#define CFG_PBSIZE (CFG_CBSIZE+sizeof(CFG_PROMPT)+16) /* Print Buffer Size */ +#define CFG_MAXARGS 32 /* max number of command args */ +#define CFG_BARGSIZE CFG_CBSIZE /* Boot Argument Buffer Size */ + +#define CFG_MEMTEST_START 0x30000000 /* memtest works on */ +#define CFG_MEMTEST_END 0x33F00000 /* 63 MB in DRAM */ + +#undef CFG_CLKS_IN_HZ /* everything, incl board info, in Hz */ + +#define CFG_LOAD_ADDR 0x32000000 /* default load address */ + +/* the PWM TImer 4 uses a counter of 15625 for 10 ms, so we need */ +/* it to wrap 100 times (total 1562500) to get 1 sec. */ +#define CFG_HZ 1562500 + +/* valid baudrates */ +#define CFG_BAUDRATE_TABLE { 9600, 19200, 38400, 57600, 115200 } + +/*----------------------------------------------------------------------- + * Stack sizes + * + * The stack sizes are set up in start.S using the settings below + */ +#define CONFIG_STACKSIZE (512*1024) /* regular stack */ +#ifdef CONFIG_USE_IRQ +#define CONFIG_STACKSIZE_IRQ (8*1024) /* IRQ stack */ +#define CONFIG_STACKSIZE_FIQ (4*1024) /* FIQ stack */ +#endif + +/* IDE/ATA config */ + +#if 0 +#define CFG_IDE_MAXBUS 1 +#define CFG_IDE_MAXDEVICE 2 +#define CFG_IDE_PREINIT 0 + +#define CFG_ATA_BASE_ADDR +#endif + +#define CONFIG_USB_OHCI 1 + +#define CONFIG_USB_DEVICE 1 +#define CONFIG_USB_TTY 1 +#define CFG_CONSOLE_IS_IN_ENV 1 +#define CONFIG_USBD_VENDORID 0x1457 /* FIC */ +#define CONFIG_USBD_PRODUCTID_GSERIAL 0x5120 /* gserial */ +#define CONFIG_USBD_PRODUCTID_CDCACM 0x511b /* SMDK2440 CDC ACM */ +#define CONFIG_USBD_MANUFACTURER "OpenMoko, Inc." +#define CONFIG_USBD_PRODUCT_NAME "S3C2440 Bootloader " U_BOOT_VERSION +#define CONFIG_EXTRA_ENV_SETTINGS "usbtty=cdc_acm\0" +#define CONFIG_USBD_DFU 1 +#define CONFIG_USBD_DFU_XFER_SIZE 4096 +#define CONFIG_USBD_DFU_INTERFACE 2 + +/*----------------------------------------------------------------------- + * Physical Memory Map + */ +#define CONFIG_NR_DRAM_BANKS 1 /* we have 1 bank of DRAM */ +#define PHYS_SDRAM_1 0x30000000 /* SDRAM Bank #1 */ +#define PHYS_SDRAM_1_SIZE 0x04000000 /* 64 MB */ + +#define PHYS_FLASH_1 0x00000000 /* Flash Bank #1 */ + +#define CFG_FLASH_BASE PHYS_FLASH_1 + +/*----------------------------------------------------------------------- + * FLASH and environment organization + */ + +#define CONFIG_AMD_LV400 1 /* uncomment this if you have a LV400 flash */ +#if 0 +#define CONFIG_AMD_LV800 1 /* uncomment this if you have a LV800 flash */ +#endif + +#define CFG_MAX_FLASH_BANKS 1 /* max number of memory banks */ +#ifdef CONFIG_AMD_LV800 +#define PHYS_FLASH_SIZE 0x00100000 /* 1MB */ +#define CFG_MAX_FLASH_SECT (19) /* max number of sectors on one chip */ +#define CFG_ENV_ADDR (CFG_FLASH_BASE + 0x0F0000) /* addr of environment */ +#endif +#ifdef CONFIG_AMD_LV400 +#define PHYS_FLASH_SIZE 0x00080000 /* 512KB */ +#define CFG_MAX_FLASH_SECT (11) /* max number of sectors on one chip */ +#define CFG_ENV_ADDR (CFG_FLASH_BASE + 0x070000) /* addr of environment */ +#endif + +/* timeout values are in ticks */ +#define CFG_FLASH_ERASE_TOUT (5*CFG_HZ) /* Timeout for Flash Erase */ +#define CFG_FLASH_WRITE_TOUT (5*CFG_HZ) /* Timeout for Flash Write */ + +#define CFG_ENV_IS_IN_NAND 1 +#define CFG_ENV_SIZE 0x20000 /* 128k Total Size of Environment Sector */ +#define CFG_ENV_OFFSET_OOB 1 +#define CFG_PREBOOT_OVERRIDE 1 + +#define NAND_MAX_CHIPS 1 +#define CFG_NAND_BASE 0x4e000000 +#define CFG_MAX_NAND_DEVICE 1 + +#define CONFIG_MMC 1 +#define CFG_MMC_BASE 0xff000000 + +#define CONFIG_EXT2 1 + +#define CONFIG_NEW_QT2440 0 + +/* FAT driver in u-boot is broken currently */ +#define CONFIG_FAT 1 +#define CONFIG_SUPPORT_VFAT + +#if 1 +/* JFFS2 driver */ +#define CONFIG_JFFS2_CMDLINE 1 +#define CONFIG_JFFS2_NAND 1 +#define CONFIG_JFFS2_NAND_DEV 0 +//#define CONFIG_JFFS2_NAND_OFF 0x634000 +//#define CONFIG_JFFS2_NAND_SIZE 0x39cc000 +#endif + +/* ATAG configuration */ +#define CONFIG_INITRD_TAG 1 +#define CONFIG_SETUP_MEMORY_TAGS 1 +#define CONFIG_CMDLINE_TAG 1 +#if 0 +#define CONFIG_SERIAL_TAG 1 +#define CONFIG_REVISION_TAG 1 +#endif + + +#if 0 +#define CONFIG_VIDEO +#define CONFIG_VIDEO_S3C2410 +#define CONFIG_CFB_CONSOLE +#define CONFIG_VIDEO_LOGO +#define CONFIG_VGA_AS_SINGLE_DEVICE + +#define VIDEO_KBD_INIT_FCT 0 +#define VIDEO_TSTC_FCT serial_tstc +#define VIDEO_GETC_FCT serial_getc + +#define LCD_VIDEO_ADDR 0x33d00000 +#endif + +#define CONFIG_S3C2410_NAND_BBT 1 +//#define CONFIG_S3C2410_NAND_HWECC 1 + +#define CFG_NAND_YAFFS_WRITE +#define CFG_NAND_YAFFS1_NEW_OOB_LAYOUT + +#define MTDIDS_DEFAULT "nand0=smdk2440-nand" +#define MTPARTS_DEFAULT "smdk2440-nand:0x00100000(u-boot),0x00200000(kernel),0x00200000(update),0x00100000(splash),0x01400000(jffs2),-(temp)" +#define CFG_NAND_DYNPART_MTD_KERNEL_NAME "smdk2440-nand" +#define CONFIG_NAND_DYNPART + +#endif /* __CONFIG_H */ Index: u-boot/include/configs/smdk2440nand.h =================================================================== --- /dev/null +++ u-boot/include/configs/smdk2440nand.h @@ -0,0 +1,47 @@ +/* + * (C) Copyright 2004 + * Samsung Electronics : SW.LEE + * + * 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. + * + */ + +#ifndef __SMDK2440_NAND_H +#define __SMDK2440_NAND_H + +#define CFG_ENV_NAND_BLOCK 8 + +#if 0 //old flash +#define NAND_OOB_SIZE (16) +#define NAND_PAGES_IN_BLOCK (32) +#define NAND_PAGE_SIZE (512) + +#define NAND_BLOCK_SIZE (NAND_PAGE_SIZE*NAND_PAGES_IN_BLOCK) +#define NAND_BLOCK_MASK (NAND_BLOCK_SIZE - 1) +#define NAND_PAGE_MASK (NAND_PAGE_SIZE - 1) +#else //new flash +#define NAND_OOB_SIZE (64) +#define NAND_PAGES_IN_BLOCK (64) +#define NAND_PAGE_SIZE (2048) + +#define NAND_BLOCK_SIZE (NAND_PAGE_SIZE*NAND_PAGES_IN_BLOCK) +#define NAND_BLOCK_MASK (NAND_BLOCK_SIZE - 1) +#define NAND_PAGE_MASK (NAND_PAGE_SIZE - 1) + +#endif + + + +//#define NAND_3_ADDR_CYCLE 1 +//#define S3C24X0_16BIT_NAND 1 + +#ifdef KINGFISH +#undef S3C24X0_16BIT_NAND +#define S3C24X0_16BIT_NAND 1 +#endif + +#endif + Index: u-boot/board/smdk2440/Makefile =================================================================== --- /dev/null +++ u-boot/board/smdk2440/Makefile @@ -0,0 +1,67 @@ +# +# (C) Copyright 2000-2006 +# Wolfgang Denk, DENX Software Engineering, wd@denx.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 +# + +include $(TOPDIR)/config.mk + +LIB = $(obj)lib$(BOARD).a + +COBJS := smdk2440.o flash.o udc.o +SOBJS := lowlevel_init.o + +.PHONY: all + +all: $(LIB) lowlevel_foo.bin + +SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c) +OBJS := $(addprefix $(obj),$(COBJS)) +SOBJS := $(addprefix $(obj),$(SOBJS)) + +$(LIB): $(obj).depend $(OBJS) $(SOBJS) + $(AR) $(ARFLAGS) $@ $(OBJS) $(SOBJS) + +lowlevel_foo.o: lowlevel_foo.S + $(CC) -c -DTEXT_BASE=0x33F80000 -march=armv4 \ + -o lowlevel_foo.o lowlevel_foo.S + +lowlevel_foo: lowlevel_foo.o lowlevel_init.o lowlevel_foo.lds + $(LD) -T ./lowlevel_foo.lds -Ttext 0x33f80000 -Bstatic \ + lowlevel_init.o lowlevel_foo.o -o lowlevel_foo + +lowlevel_foo.bin: lowlevel_foo + $(CROSS_COMPILE)objcopy --gap-fill=0xff -O binary \ + lowlevel_foo lowlevel_foo.bin + +clean: + rm -f $(SOBJS) $(OBJS) + +distclean: clean + rm -f $(LIB) core *.bak .depend + +######################################################################### + +# defines $(obj).depend target +include $(SRCTREE)/rules.mk + +sinclude $(obj).depend + +######################################################################### Index: u-boot/board/smdk2440/config.mk =================================================================== --- /dev/null +++ u-boot/board/smdk2440/config.mk @@ -0,0 +1,29 @@ +# +# (C) Copyright 2002 +# Gary Jennejohn, DENX Software Engineering, +# David Mueller, ELSOFT AG, +# +# SAMSUNG SMDK2440 board with S3C2440 (ARM920T) cpu +# +# see http://www.samsung.com/ for more information on SAMSUNG +# + +CONFIG_USB_DFU_VENDOR=0x1457 +CONFIG_USB_DFU_PRODUCT=0x511b +CONFIG_USB_DFU_REVISION=0x0100 + +# +# SMDK2440 has 1 bank of 64 MB DRAM +# +# 3000'0000 to 3400'0000 +# +# Linux-Kernel is expected to be at 3000'8000, entry 3000'8000 +# optionally with a ramdisk at 3080'0000 +# +# we load ourself to 33F8'0000 +# +# download area is 3300'0000 +# + + +TEXT_BASE = 0x33F80000 Index: u-boot/board/smdk2440/flash.c =================================================================== --- /dev/null +++ u-boot/board/smdk2440/flash.c @@ -0,0 +1,433 @@ +/* + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH + * Alex Zuepke + * + * 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 + */ + +#include + +ulong myflush (void); + + +#define FLASH_BANK_SIZE PHYS_FLASH_SIZE +#define MAIN_SECT_SIZE 0x10000 /* 64 KB */ + +flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; + + +#define CMD_READ_ARRAY 0x000000F0 +#define CMD_UNLOCK1 0x000000AA +#define CMD_UNLOCK2 0x00000055 +#define CMD_ERASE_SETUP 0x00000080 +#define CMD_ERASE_CONFIRM 0x00000030 +#define CMD_PROGRAM 0x000000A0 +#define CMD_UNLOCK_BYPASS 0x00000020 + +#define MEM_FLASH_ADDR1 (*(volatile u16 *)(CFG_FLASH_BASE + (0x00000555 << 1))) +#define MEM_FLASH_ADDR2 (*(volatile u16 *)(CFG_FLASH_BASE + (0x000002AA << 1))) + +#define BIT_ERASE_DONE 0x00000080 +#define BIT_RDY_MASK 0x00000080 +#define BIT_PROGRAM_ERROR 0x00000020 +#define BIT_TIMEOUT 0x80000000 /* our flag */ + +#define READY 1 +#define ERR 2 +#define TMO 4 + +/*----------------------------------------------------------------------- + */ + +ulong flash_init (void) +{ + int i, j; + ulong size = 0; + + for (i = 0; i < CFG_MAX_FLASH_BANKS; i++) { + ulong flashbase = 0; + + flash_info[i].flash_id = +#if defined(CONFIG_AMD_LV400) + (AMD_MANUFACT & FLASH_VENDMASK) | + (AMD_ID_LV400B & FLASH_TYPEMASK); +#elif defined(CONFIG_AMD_LV800) + (AMD_MANUFACT & FLASH_VENDMASK) | + (AMD_ID_LV800B & FLASH_TYPEMASK); +#else +#error "Unknown flash configured" +#endif + flash_info[i].size = FLASH_BANK_SIZE; + flash_info[i].sector_count = CFG_MAX_FLASH_SECT; + memset (flash_info[i].protect, 0, CFG_MAX_FLASH_SECT); + if (i == 0) + flashbase = PHYS_FLASH_1; + else + panic ("configured too many flash banks!\n"); + for (j = 0; j < flash_info[i].sector_count; j++) { + if (j <= 3) { + /* 1st one is 16 KB */ + if (j == 0) { + flash_info[i].start[j] = + flashbase + 0; + } + + /* 2nd and 3rd are both 8 KB */ + if ((j == 1) || (j == 2)) { + flash_info[i].start[j] = + flashbase + 0x4000 + (j - + 1) * + 0x2000; + } + + /* 4th 32 KB */ + if (j == 3) { + flash_info[i].start[j] = + flashbase + 0x8000; + } + } else { + flash_info[i].start[j] = + flashbase + (j - 3) * MAIN_SECT_SIZE; + } + } + size += flash_info[i].size; + } + + flash_protect (FLAG_PROTECT_SET, + CFG_FLASH_BASE, + CFG_FLASH_BASE + monitor_flash_len - 1, + &flash_info[0]); + + flash_protect (FLAG_PROTECT_SET, + CFG_ENV_ADDR, + CFG_ENV_ADDR + CFG_ENV_SIZE - 1, &flash_info[0]); + + return size; +} + +/*----------------------------------------------------------------------- + */ +void flash_print_info (flash_info_t * info) +{ + int i; + + switch (info->flash_id & FLASH_VENDMASK) { + case (AMD_MANUFACT & FLASH_VENDMASK): + printf ("AMD: "); + break; + default: + printf ("Unknown Vendor "); + break; + } + + switch (info->flash_id & FLASH_TYPEMASK) { + case (AMD_ID_LV400B & FLASH_TYPEMASK): + printf ("1x Amd29LV400BB (4Mbit)\n"); + break; + case (AMD_ID_LV800B & FLASH_TYPEMASK): + printf ("1x Amd29LV800BB (8Mbit)\n"); + break; + default: + printf ("Unknown Chip Type\n"); + goto Done; + break; + } + + printf (" Size: %ld MB in %d Sectors\n", + info->size >> 20, info->sector_count); + + printf (" Sector Start Addresses:"); + for (i = 0; i < info->sector_count; i++) { + if ((i % 5) == 0) { + printf ("\n "); + } + printf (" %08lX%s", info->start[i], + info->protect[i] ? " (RO)" : " "); + } + printf ("\n"); + + Done:; +} + +/*----------------------------------------------------------------------- + */ + +int flash_erase (flash_info_t * info, int s_first, int s_last) +{ + ushort result; + int iflag, cflag, prot, sect; + int rc = ERR_OK; + int chip; + + /* first look for protection bits */ + + if (info->flash_id == FLASH_UNKNOWN) + return ERR_UNKNOWN_FLASH_TYPE; + + if ((s_first < 0) || (s_first > s_last)) { + return ERR_INVAL; + } + + if ((info->flash_id & FLASH_VENDMASK) != + (AMD_MANUFACT & FLASH_VENDMASK)) { + return ERR_UNKNOWN_FLASH_VENDOR; + } + + prot = 0; + for (sect = s_first; sect <= s_last; ++sect) { + if (info->protect[sect]) { + prot++; + } + } + if (prot) + return ERR_PROTECTED; + + /* + * Disable interrupts which might cause a timeout + * here. Remember that our exception vectors are + * at address 0 in the flash, and we don't want a + * (ticker) exception to happen while the flash + * chip is in programming mode. + */ + cflag = icache_status (); + icache_disable (); + iflag = disable_interrupts (); + + /* Start erase on unprotected sectors */ + for (sect = s_first; sect <= s_last && !ctrlc (); sect++) { + printf ("Erasing sector %2d ... ", sect); + + /* arm simple, non interrupt dependent timer */ + reset_timer_masked (); + + if (info->protect[sect] == 0) { /* not protected */ + vu_short *addr = (vu_short *) (info->start[sect]); + + MEM_FLASH_ADDR1 = CMD_UNLOCK1; + MEM_FLASH_ADDR2 = CMD_UNLOCK2; + MEM_FLASH_ADDR1 = CMD_ERASE_SETUP; + + MEM_FLASH_ADDR1 = CMD_UNLOCK1; + MEM_FLASH_ADDR2 = CMD_UNLOCK2; + *addr = CMD_ERASE_CONFIRM; + + /* wait until flash is ready */ + chip = 0; + + do { + result = *addr; + + /* check timeout */ + if (get_timer_masked () > + CFG_FLASH_ERASE_TOUT) { + MEM_FLASH_ADDR1 = CMD_READ_ARRAY; + chip = TMO; + break; + } + + if (!chip + && (result & 0xFFFF) & BIT_ERASE_DONE) + chip = READY; + + if (!chip + && (result & 0xFFFF) & BIT_PROGRAM_ERROR) + chip = ERR; + + } while (!chip); + + MEM_FLASH_ADDR1 = CMD_READ_ARRAY; + + if (chip == ERR) { + rc = ERR_PROG_ERROR; + goto outahere; + } + if (chip == TMO) { + rc = ERR_TIMOUT; + goto outahere; + } + + printf ("ok.\n"); + } else { /* it was protected */ + + printf ("protected!\n"); + } + } + + if (ctrlc ()) + printf ("User Interrupt!\n"); + + outahere: + /* allow flash to settle - wait 10 ms */ + udelay_masked (10000); + + if (iflag) + enable_interrupts (); + + if (cflag) + icache_enable (); + + return rc; +} + +/*----------------------------------------------------------------------- + * Copy memory to flash + */ + +volatile static int write_hword (flash_info_t * info, ulong dest, ushort data) +{ + vu_short *addr = (vu_short *) dest; + ushort result; + int rc = ERR_OK; + int cflag, iflag; + int chip; + + /* + * Check if Flash is (sufficiently) erased + */ + result = *addr; + if ((result & data) != data) + return ERR_NOT_ERASED; + + + /* + * Disable interrupts which might cause a timeout + * here. Remember that our exception vectors are + * at address 0 in the flash, and we don't want a + * (ticker) exception to happen while the flash + * chip is in programming mode. + */ + cflag = icache_status (); + icache_disable (); + iflag = disable_interrupts (); + + MEM_FLASH_ADDR1 = CMD_UNLOCK1; + MEM_FLASH_ADDR2 = CMD_UNLOCK2; + MEM_FLASH_ADDR1 = CMD_UNLOCK_BYPASS; + *addr = CMD_PROGRAM; + *addr = data; + + /* arm simple, non interrupt dependent timer */ + reset_timer_masked (); + + /* wait until flash is ready */ + chip = 0; + do { + result = *addr; + + /* check timeout */ + if (get_timer_masked () > CFG_FLASH_ERASE_TOUT) { + chip = ERR | TMO; + break; + } + if (!chip && ((result & 0x80) == (data & 0x80))) + chip = READY; + + if (!chip && ((result & 0xFFFF) & BIT_PROGRAM_ERROR)) { + result = *addr; + + if ((result & 0x80) == (data & 0x80)) + chip = READY; + else + chip = ERR; + } + + } while (!chip); + + *addr = CMD_READ_ARRAY; + + if (chip == ERR || *addr != data) + rc = ERR_PROG_ERROR; + + if (iflag) + enable_interrupts (); + + if (cflag) + icache_enable (); + + return rc; +} + +/*----------------------------------------------------------------------- + * Copy memory to flash. + */ + +int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt) +{ + ulong cp, wp; + int l; + int i, rc; + ushort data; + + wp = (addr & ~1); /* get lower word aligned address */ + + /* + * handle unaligned start bytes + */ + if ((l = addr - wp) != 0) { + data = 0; + for (i = 0, cp = wp; i < l; ++i, ++cp) { + data = (data >> 8) | (*(uchar *) cp << 8); + } + for (; i < 2 && cnt > 0; ++i) { + data = (data >> 8) | (*src++ << 8); + --cnt; + ++cp; + } + for (; cnt == 0 && i < 2; ++i, ++cp) { + data = (data >> 8) | (*(uchar *) cp << 8); + } + + if ((rc = write_hword (info, wp, data)) != 0) { + return (rc); + } + wp += 2; + } + + /* + * handle word aligned part + */ + while (cnt >= 2) { + data = *((vu_short *) src); + if ((rc = write_hword (info, wp, data)) != 0) { + return (rc); + } + src += 2; + wp += 2; + cnt -= 2; + } + + if (cnt == 0) { + return ERR_OK; + } + + /* + * handle unaligned tail bytes + */ + data = 0; + for (i = 0, cp = wp; i < 2 && cnt > 0; ++i, ++cp) { + data = (data >> 8) | (*src++ << 8); + --cnt; + } + for (; i < 2; ++i, ++cp) { + data = (data >> 8) | (*(uchar *) cp << 8); + } + + return write_hword (info, wp, data); +} Index: u-boot/board/smdk2440/lowlevel_init.S =================================================================== --- /dev/null +++ u-boot/board/smdk2440/lowlevel_init.S @@ -0,0 +1,167 @@ +/* + * Memory Setup stuff - taken from blob memsetup.S + * + * Copyright (C) 1999 2000 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl) and + * Jan-Derk Bakker (J.D.Bakker@its.tudelft.nl) + * + * Modified for the Samsung SMDK2410 by + * (C) Copyright 2002 + * David Mueller, ELSOFT AG, + * + * 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 + */ + + +#include +#include + + +/* some parameters for the board */ + +/* + * + * Taken from linux/arch/arm/boot/compressed/head-s3c2410.S + * + * Copyright (C) 2002 Samsung Electronics SW.LEE + * + */ + +#define BWSCON 0x48000000 + +/* BWSCON */ +#define DW8 (0x0) +#define DW16 (0x1) +#define DW32 (0x2) +#define WAIT (0x1<<2) +#define UBLB (0x1<<3) + +#define B1_BWSCON (DW32) +#define B2_BWSCON (DW16) +#define B3_BWSCON (DW16 + WAIT + UBLB) +#define B4_BWSCON (DW16) +#define B5_BWSCON (DW16) +#define B6_BWSCON (DW32) +#define B7_BWSCON (DW32) + +/* BANK0CON */ +#define B0_Tacs 0x0 /* 0clk */ +#define B0_Tcos 0x0 /* 0clk */ +#define B0_Tacc 0x7 /* 14clk */ +#define B0_Tcoh 0x0 /* 0clk */ +#define B0_Tah 0x0 /* 0clk */ +#define B0_Tacp 0x0 +#define B0_PMC 0x0 /* normal */ + +/* BANK1CON */ +#define B1_Tacs 0x0 /* 0clk */ +#define B1_Tcos 0x0 /* 0clk */ +#define B1_Tacc 0x7 /* 14clk */ +#define B1_Tcoh 0x0 /* 0clk */ +#define B1_Tah 0x0 /* 0clk */ +#define B1_Tacp 0x0 +#define B1_PMC 0x0 + +#define B2_Tacs 0x0 +#define B2_Tcos 0x0 +#define B2_Tacc 0x7 +#define B2_Tcoh 0x0 +#define B2_Tah 0x0 +#define B2_Tacp 0x0 +#define B2_PMC 0x0 + +#define B3_Tacs 0x0 /* 0clk */ +#define B3_Tcos 0x3 /* 4clk */ +#define B3_Tacc 0x7 /* 14clk */ +#define B3_Tcoh 0x1 /* 1clk */ +#define B3_Tah 0x0 /* 0clk */ +#define B3_Tacp 0x3 /* 6clk */ +#define B3_PMC 0x0 /* normal */ + +#define B4_Tacs 0x0 /* 0clk */ +#define B4_Tcos 0x0 /* 0clk */ +#define B4_Tacc 0x7 /* 14clk */ +#define B4_Tcoh 0x0 /* 0clk */ +#define B4_Tah 0x0 /* 0clk */ +#define B4_Tacp 0x0 +#define B4_PMC 0x0 /* normal */ + +#define B5_Tacs 0x0 /* 0clk */ +#define B5_Tcos 0x0 /* 0clk */ +#define B5_Tacc 0x7 /* 14clk */ +#define B5_Tcoh 0x0 /* 0clk */ +#define B5_Tah 0x0 /* 0clk */ +#define B5_Tacp 0x0 +#define B5_PMC 0x0 /* normal */ + +#define B6_MT 0x3 /* SDRAM */ +#define B6_Trcd 0x1 +#define B6_SCAN 0x1 /* 9bit */ + +#define B7_MT 0x3 /* SDRAM */ +#define B7_Trcd 0x1 /* 3clk */ +#define B7_SCAN 0x1 /* 9bit */ + +/* REFRESH parameter */ +#define REFEN 0x1 /* Refresh enable */ +#define TREFMD 0x0 /* CBR(CAS before RAS)/Auto refresh */ +#define Trp 0x0 /* 2clk */ +#define Trc 0x3 /* 7clk */ +#define Tchr 0x2 /* 3clk */ +#define REFCNT 1113 /* period=15.6us, HCLK=60Mhz, (2048+1-15.6*60) */ +/**************************************/ + +_TEXT_BASE: + .word TEXT_BASE + +.globl lowlevel_init +lowlevel_init: + /* memory control configuration */ + /* make r0 relative the current location so that it */ + /* reads SMRDATA out of FLASH rather than memory ! */ + ldr r0, =SMRDATA + ldr r1, _TEXT_BASE + sub r0, r0, r1 + ldr r1, =BWSCON /* Bus Width Status Controller */ + add r2, r0, #13*4 +0: + ldr r3, [r0], #4 + str r3, [r1], #4 + cmp r2, r0 + bne 0b + + /* everything is fine now */ + mov pc, lr + + .ltorg +/* the literal pools origin */ + +SMRDATA: + .word (0+(B1_BWSCON<<4)+(B2_BWSCON<<8)+(B3_BWSCON<<12)+(B4_BWSCON<<16)+(B5_BWSCON<<20)+(B6_BWSCON<<24)+(B7_BWSCON<<28)) + .word ((B0_Tacs<<13)+(B0_Tcos<<11)+(B0_Tacc<<8)+(B0_Tcoh<<6)+(B0_Tah<<4)+(B0_Tacp<<2)+(B0_PMC)) + .word ((B1_Tacs<<13)+(B1_Tcos<<11)+(B1_Tacc<<8)+(B1_Tcoh<<6)+(B1_Tah<<4)+(B1_Tacp<<2)+(B1_PMC)) + .word ((B2_Tacs<<13)+(B2_Tcos<<11)+(B2_Tacc<<8)+(B2_Tcoh<<6)+(B2_Tah<<4)+(B2_Tacp<<2)+(B2_PMC)) + .word ((B3_Tacs<<13)+(B3_Tcos<<11)+(B3_Tacc<<8)+(B3_Tcoh<<6)+(B3_Tah<<4)+(B3_Tacp<<2)+(B3_PMC)) + .word ((B4_Tacs<<13)+(B4_Tcos<<11)+(B4_Tacc<<8)+(B4_Tcoh<<6)+(B4_Tah<<4)+(B4_Tacp<<2)+(B4_PMC)) + .word ((B5_Tacs<<13)+(B5_Tcos<<11)+(B5_Tacc<<8)+(B5_Tcoh<<6)+(B5_Tah<<4)+(B5_Tacp<<2)+(B5_PMC)) + .word ((B6_MT<<15)+(B6_Trcd<<2)+(B6_SCAN)) + .word ((B7_MT<<15)+(B7_Trcd<<2)+(B7_SCAN)) + .word ((REFEN<<23)+(TREFMD<<22)+(Trp<<20)+(Trc<<18)+(Tchr<<16)+REFCNT) + .word 0x32 + .word 0x30 + .word 0x30 Index: u-boot/board/smdk2440/smdk2440.c =================================================================== --- /dev/null +++ u-boot/board/smdk2440/smdk2440.c @@ -0,0 +1,152 @@ +/* + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH + * Marius Groeger + * + * (C) Copyright 2002 + * David Mueller, ELSOFT AG, + * + * 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 + */ + +#include +#include + +DECLARE_GLOBAL_DATA_PTR; + +#define FCLK_SPEED 1 + +#if FCLK_SPEED==0 /* Fout = 203MHz, Fin = 12MHz for Audio */ +#define M_MDIV 0xC3 +#define M_PDIV 0x4 +#define M_SDIV 0x1 +#elif FCLK_SPEED==1 /* Fout = 399.65MHz */ +#define M_MDIV 0x6e +#define M_PDIV 0x3 +#define M_SDIV 0x1 +#endif + +#define USB_CLOCK 1 + +#if USB_CLOCK==0 +#define U_M_MDIV 0xA1 +#define U_M_PDIV 0x3 +#define U_M_SDIV 0x1 +#elif USB_CLOCK==1 +#define U_M_MDIV 0x3c +#define U_M_PDIV 0x4 +#define U_M_SDIV 0x2 +#endif + +static inline void delay (unsigned long loops) +{ + __asm__ volatile ("1:\n" + "subs %0, %1, #1\n" + "bne 1b":"=r" (loops):"0" (loops)); +} + +/* + * Miscellaneous platform dependent initialisations + */ + +int board_init (void) +{ + S3C24X0_CLOCK_POWER * const clk_power = S3C24X0_GetBase_CLOCK_POWER(); + S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO(); + + /* to reduce PLL lock time, adjust the LOCKTIME register */ + clk_power->LOCKTIME = 0xFFFFFF; + + /* configure MPLL */ + clk_power->MPLLCON = ((M_MDIV << 12) + (M_PDIV << 4) + M_SDIV); + + /* some delay between MPLL and UPLL */ + delay (4000); + + /* configure UPLL */ + clk_power->UPLLCON = ((U_M_MDIV << 12) + (U_M_PDIV << 4) + U_M_SDIV); + + /* some delay between MPLL and UPLL */ + delay (8000); + + /* set up the I/O ports */ + gpio->GPACON = 0x007FFFFF; + gpio->GPBCON = 0x002a9655; + gpio->GPBUP = 0x000007FF; + gpio->GPCCON = 0xAAAAAAAA; + gpio->GPCUP = 0x0000FFFF; + gpio->GPDCON = 0xAAAAAAAA; + gpio->GPDUP = 0x0000FFFF; + gpio->GPECON = 0xAAAAAAAA; + gpio->GPEUP = 0x0000FFFF; + gpio->GPFCON = 0x000055AA; + gpio->GPFUP = 0x000000FF; + gpio->GPGCON = 0xFD95FFBA; + gpio->GPGUP = 0x0000FFFF; +#ifdef CONFIG_SERIAL3 + gpio->GPHCON = 0x002AAAAA; +#else + gpio->GPHCON = 0x002AFAAA; +#endif + gpio->GPHUP = 0x000007FF; + + gpio->GPJCON = 0x2AAAAAA; + +#if 0 + /* USB Device Part */ + /*GPGCON is reset for USB Device */ + gpio->GPGCON = (gpio->GPGCON & ~(3 << 24)) | (1 << 24); /* Output Mode */ + gpio->GPGUP = gpio->GPGUP | ( 1 << 12); /* Pull up disable */ + + gpio->GPGDAT |= ( 1 << 12) ; + gpio->GPGDAT &= ~( 1 << 12) ; + udelay(20000); + gpio->GPGDAT |= ( 1 << 12) ; +#endif + + /* arch number of SMDK2440-Board */ + gd->bd->bi_arch_number = MACH_TYPE_S3C2440; + + /* adress of boot parameters */ + gd->bd->bi_boot_params = 0x30000100; + + icache_enable(); + dcache_enable(); + + return 0; +} + +int dram_init (void) +{ + gd->bd->bi_dram[0].start = PHYS_SDRAM_1; + gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE; + + return 0; +} + +/* The sum of all part_size[]s must equal to the NAND size, i.e., 0x4000000. + "initrd" is sized such that it can hold two uncompressed 16 bit 640*480 + images: 640*480*2*2 = 1228800 < 1245184. */ + +unsigned int dynpart_size[] = { + CFG_UBOOT_SIZE, 0x20000, 0x200000, 0xa0000, 0x3d5c000-CFG_UBOOT_SIZE, 0 }; +char *dynpart_names[] = { + "u-boot", "u-boot_env", "kernel", "splash", "rootfs", NULL }; + + Index: u-boot/board/smdk2440/u-boot.lds =================================================================== --- /dev/null +++ u-boot/board/smdk2440/u-boot.lds @@ -0,0 +1,58 @@ +/* + * (C) Copyright 2002 + * Gary Jennejohn, DENX Software Engineering, + * + * 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 + */ + +OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm") +/*OUTPUT_FORMAT("elf32-arm", "elf32-arm", "elf32-arm")*/ +OUTPUT_ARCH(arm) +ENTRY(_start) +SECTIONS +{ + . = 0x00000000; + + . = ALIGN(4); + .text : + { + cpu/arm920t/start.o (.text) + cpu/arm920t/s3c24x0/nand_read.o (.text) + *(.text) + } + + . = ALIGN(4); + .rodata : { *(.rodata) } + + . = ALIGN(4); + .data : { *(.data) } + + . = ALIGN(4); + .got : { *(.got) } + + . = .; + __u_boot_cmd_start = .; + .u_boot_cmd : { *(.u_boot_cmd) } + __u_boot_cmd_end = .; + + . = ALIGN(4); + __bss_start = .; + .bss : { *(.bss) } + _end = .; +} Index: u-boot/board/smdk2440/udc.c =================================================================== --- /dev/null +++ u-boot/board/smdk2440/udc.c @@ -0,0 +1,23 @@ + +#include +#include +#include + +void udc_ctrl(enum usbd_event event, int param) +{ + S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO(); + + switch (event) { + case UDC_CTRL_PULLUP_ENABLE: + if (param) + gpio->GPGDAT |= (1 << 12); + else + gpio->GPGDAT &= ~(1 << 12); + break; + case UDC_CTRL_500mA_ENABLE: + /* IGNORE */ + break; + default: + break; + } +} Index: u-boot/board/smdk2440/lowlevel_foo.S =================================================================== --- /dev/null +++ u-boot/board/smdk2440/lowlevel_foo.S @@ -0,0 +1,82 @@ + +_start: + b reset +undefvec: + b undefvec +swivec: + b swivec +pabtvec: + b pabtvec +dabtvec: + b dabtvec +rsvdvec: + b rsvdvec +irqvec: + b irqvec +fiqvec: + b fiqvec + +reset: + /* + * set the cpu to SVC32 mode + */ + mrs r0,cpsr + bic r0,r0,#0x1f + orr r0,r0,#0xd3 + msr cpsr,r0 + +/* turn off the watchdog */ +#define pWTCON 0x53000000 +#define INTMSK 0x4A000008 /* Interupt-Controller base addresses */ +#define INTSUBMSK 0x4A00001C +#define CLKDIVN 0x4C000014 /* clock divisor register */ + + ldr r0, =pWTCON + mov r1, #0x0 + str r1, [r0] + + mov r1, #0xffffffff + ldr r0, =INTMSK + str r1, [r0] + ldr r1, =0x3ff + ldr r0, =INTSUBMSK + str r1, [r0] + + /* FCLK:HCLK:PCLK = 1:2:4 */ + /* default FCLK is 120 MHz ! */ + ldr r0, =CLKDIVN + mov r1, #3 + str r1, [r0] + + bl cpu_init_crit + ldr r0,=TEXT_BASE + mov pc, r0 + +cpu_init_crit: + /* + * flush v4 I/D caches + */ + mov r0, #0 + mcr p15, 0, r0, c7, c7, 0 /* flush v3/v4 cache */ + mcr p15, 0, r0, c8, c7, 0 /* flush v4 TLB */ + + /* + * disable MMU stuff and caches + */ + mrc p15, 0, r0, c1, c0, 0 + bic r0, r0, #0x00002300 @ clear bits 13, 9:8 (--V- --RS) + bic r0, r0, #0x00000087 @ clear bits 7, 2:0 (B--- -CAM) + orr r0, r0, #0x00000002 @ set bit 2 (A) Align + orr r0, r0, #0x00001000 @ set bit 12 (I) I-Cache + mcr p15, 0, r0, c1, c0, 0 + + /* + * before relocating, we have to setup RAM timing + * because memory timing is board-dependend, you will + * find a lowlevel_init.S in your board directory. + */ + mov ip, lr + bl lowlevel_init + mov lr, ip + mov pc, lr + Index: u-boot/board/smdk2440/lowlevel_foo.lds =================================================================== --- /dev/null +++ u-boot/board/smdk2440/lowlevel_foo.lds @@ -0,0 +1,56 @@ +/* + * (C) Copyright 2002 + * Gary Jennejohn, DENX Software Engineering, + * + * 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 + */ + +OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm") +OUTPUT_ARCH(arm) +ENTRY(_start) +SECTIONS +{ + . = 0x00000000; + + . = ALIGN(4); + .text : + { + lowlevel_foo.o (.text) + *(.text) + } + + . = ALIGN(4); + .rodata : { *(.rodata) } + + . = ALIGN(4); + .data : { *(.data) } + + . = ALIGN(4); + .got : { *(.got) } + + . = .; + __u_boot_cmd_start = .; + .u_boot_cmd : { *(.u_boot_cmd) } + __u_boot_cmd_end = .; + + . = ALIGN(4); + __bss_start = .; + .bss : { *(.bss) } + _end = .; +}