diff options
Diffstat (limited to 'lib_blackfin')
| -rw-r--r-- | lib_blackfin/Makefile | 47 | ||||
| -rw-r--r-- | lib_blackfin/bf533_linux.c | 91 | ||||
| -rw-r--r-- | lib_blackfin/bf533_string.c | 185 | ||||
| -rw-r--r-- | lib_blackfin/blackfin_board.h | 62 | ||||
| -rw-r--r-- | lib_blackfin/board.c | 282 | ||||
| -rw-r--r-- | lib_blackfin/cache.c | 40 | ||||
| -rw-r--r-- | lib_blackfin/muldi3.c | 92 |
7 files changed, 799 insertions, 0 deletions
diff --git a/lib_blackfin/Makefile b/lib_blackfin/Makefile new file mode 100644 index 0000000..bc280d0 --- /dev/null +++ b/lib_blackfin/Makefile @@ -0,0 +1,47 @@ +# +# U-boot Makefile +# +# Copyright (c) 2005 blackfin.uclinux.org +# +# (C) Copyright 2000-2004 +# 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 $(TOPDIR)/config.mk + +LIB = lib$(ARCH).a + +AOBJS = + +COBJS = board.o bf533_linux.o bf533_string.o cache.o muldi3.o +OBJS = $(AOBJS) $(COBJS) + +$(LIB): .depend $(OBJS) + $(AR) crv $@ $(OBJS) + +######################################################################### + +.depend: Makefile $(AOBJS:.o=.S) $(COBJS:.o=.c) + $(CC) -M $(CFLAGS) $(AOBJS:.o=.S) $(COBJS:.o=.c) > $@ + +sinclude .depend + +######################################################################### diff --git a/lib_blackfin/bf533_linux.c b/lib_blackfin/bf533_linux.c new file mode 100644 index 0000000..88b4da2 --- /dev/null +++ b/lib_blackfin/bf533_linux.c @@ -0,0 +1,91 @@ +/* + * U-boot - bf533_linux.c + * + * Copyright (c) 2005 blackfin.uclinux.org + * + * (C) Copyright 2000-2004 + * 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 + */ + +/* Dummy functions, currently not in Use */ + +#include <common.h> +#include <command.h> +#include <image.h> +#include <zlib.h> +#include <asm/byteorder.h> + +#define LINUX_MAX_ENVS 256 +#define LINUX_MAX_ARGS 256 + +#ifdef CONFIG_SHOW_BOOT_PROGRESS +#include <status_led.h> +#define SHOW_BOOT_PROGRESS(arg) show_boot_progress(arg) +#else +#define SHOW_BOOT_PROGRESS(arg) +#endif + +#define CMD_LINE_ADDR 0xFF900000 /* L1 scratchpad */ + +#ifdef SHARED_RESOURCES + extern void swap_to(int device_id); +#endif + +static char *make_command_line(void); + +extern image_header_t header; +extern int do_reset(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]); +void do_bootm_linux(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[], + ulong addr, ulong * len_ptr, int verify) +{ + int (*appl)(char *cmdline); + char *cmdline; + +#ifdef SHARED_RESOURCES + swap_to(FLASH); +#endif + + appl = (int (*)(char *))ntohl(header.ih_ep); + printf("Starting Kernel at = %x\n", appl); + cmdline = make_command_line(); + if(icache_status()){ + flush_instruction_cache(); + icache_disable(); + } + if(dcache_status()){ + flush_data_cache(); + dcache_disable(); + } + (*appl)(cmdline); +} + +char *make_command_line(void) +{ + char *dest = (char *) CMD_LINE_ADDR; + char *bootargs; + + if ( (bootargs = getenv("bootargs")) == NULL ) + return NULL; + + strncpy(dest, bootargs, 0x1000); + dest[0xfff] = 0; + return dest; +} diff --git a/lib_blackfin/bf533_string.c b/lib_blackfin/bf533_string.c new file mode 100644 index 0000000..c8b1a3a --- /dev/null +++ b/lib_blackfin/bf533_string.c @@ -0,0 +1,185 @@ +/* + * U-boot - bf533_string.c Contains library routines. + * + * Copyright (c) 2005 blackfin.uclinux.org + * + * (C) Copyright 2000-2004 + * 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 <common.h> +#include <asm/setup.h> +#include <asm/page.h> +#include <asm/cpu/defBF533.h> + +void *dma_memcpy(void *,const void *,size_t); + +char *strcpy(char *dest, const char *src) +{ + char *xdest = dest; + char temp = 0; + + __asm__ __volatile__ + ("1:\t%2 = B [%1++] (Z);\n\t" + "B [%0++] = %2;\n\t" + "CC = %2;\n\t" + "if cc jump 1b (bp);\n":"=a"(dest), "=a"(src), "=d"(temp) + :"0"(dest), "1"(src), "2"(temp):"memory"); + + return xdest; +} + +char *strncpy(char *dest, const char *src, size_t n) +{ + char *xdest = dest; + char temp = 0; + + if (n == 0) + return xdest; + + __asm__ __volatile__ + ("1:\t%3 = B [%1++] (Z);\n\t" + "B [%0++] = %3;\n\t" + "CC = %3;\n\t" + "if ! cc jump 2f;\n\t" + "%2 += -1;\n\t" + "CC = %2 == 0;\n\t" + "if ! cc jump 1b (bp);\n" + "2:\n":"=a"(dest), "=a"(src), "=da"(n), "=d"(temp) + :"0"(dest), "1"(src), "2"(n), "3"(temp) + :"memory"); + + return xdest; +} + +int strcmp(const char *cs, const char *ct) +{ + char __res1, __res2; + + __asm__ + ("1:\t%2 = B[%0++] (Z);\n\t" /* get *cs */ + "%3 = B[%1++] (Z);\n\t" /* get *ct */ + "CC = %2 == %3;\n\t" /* compare a byte */ + "if ! cc jump 2f;\n\t" /* not equal, break out */ + "CC = %2;\n\t" /* at end of cs? */ + "if cc jump 1b (bp);\n\t" /* no, keep going */ + "jump.s 3f;\n" /* strings are equal */ + "2:\t%2 = %2 - %3;\n" /* *cs - *ct */ + "3:\n": "=a"(cs), "=a"(ct), "=d"(__res1), + "=d"(__res2) + : "0"(cs), "1"(ct)); + + return __res1; +} + +int strncmp(const char *cs, const char *ct, size_t count) +{ + char __res1, __res2; + + if (!count) + return 0; + + __asm__ + ("1:\t%3 = B[%0++] (Z);\n\t" /* get *cs */ + "%4 = B[%1++] (Z);\n\t" /* get *ct */ + "CC = %3 == %4;\n\t" /* compare a byte */ + "if ! cc jump 3f;\n\t" /* not equal, break out */ + "CC = %3;\n\t" /* at end of cs? */ + "if ! cc jump 4f;\n\t" /* yes, all done */ + "%2 += -1;\n\t" /* no, adjust count */ + "CC = %2 == 0;\n\t" "if ! cc jump 1b;\n" /* more to do, keep going */ + "2:\t%3 = 0;\n\t" /* strings are equal */ + "jump.s 4f;\n" "3:\t%3 = %3 - %4;\n" /* *cs - *ct */ + "4:": "=a"(cs), "=a"(ct), "=da"(count), "=d"(__res1), + "=d"(__res2) + : "0"(cs), "1"(ct), "2"(count)); + + return __res1; +} + +/* + * memcpy - Copy one area of memory to another + * @dest: Where to copy to + * @src: Where to copy from + * @count: The size of the area. + * + * You should not use this function to access IO space, use memcpy_toio() + * or memcpy_fromio() instead. + */ +void * memcpy(void * dest,const void *src,size_t count) +{ + char *tmp = (char *) dest, *s = (char *) src; + +/* Turn off the cache, if destination in the L1 memory */ + if ( (tmp >= (char *)L1_ISRAM) && (tmp < (char *)L1_ISRAM_END) + || (tmp >= (char *)DATA_BANKA_SRAM) && (tmp < DATA_BANKA_SRAM_END) + || (tmp >= (char *)DATA_BANKB_SRAM) && (tmp < DATA_BANKB_SRAM_END) ){ + if(icache_status()){ + blackfin_icache_flush_range(src, src+count); + icache_disable(); + } + if(dcache_status()){ + blackfin_dcache_flush_range(src, src+count); + dcache_disable(); + } + dma_memcpy(dest,src,count); + }else{ + while(count--) + *tmp++ = *s++; + } + return dest; +} + +void *dma_memcpy(void * dest,const void *src,size_t count) +{ + + *pMDMA_D0_IRQ_STATUS = DMA_DONE | DMA_ERR; + + /* Copy sram functions from sdram to sram */ + /* Setup destination start address */ + *pMDMA_D0_START_ADDR = (volatile void **)dest; + /* Setup destination xcount */ + *pMDMA_D0_X_COUNT = count ; + /* Setup destination xmodify */ + *pMDMA_D0_X_MODIFY = 1; + + /* Setup Source start address */ + *pMDMA_S0_START_ADDR = (volatile void **)src; + /* Setup Source xcount */ + *pMDMA_S0_X_COUNT = count; + /* Setup Source xmodify */ + *pMDMA_S0_X_MODIFY = 1; + + /* Enable source DMA */ + *pMDMA_S0_CONFIG = (DMAEN); + asm("ssync;"); + + *pMDMA_D0_CONFIG = ( WNR | DMAEN); + + while(*pMDMA_D0_IRQ_STATUS & DMA_RUN){ + *pMDMA_D0_IRQ_STATUS |= (DMA_DONE | DMA_ERR); + } + *pMDMA_D0_IRQ_STATUS |= (DMA_DONE | DMA_ERR); + + dest += count; + src += count; + return dest; +} diff --git a/lib_blackfin/blackfin_board.h b/lib_blackfin/blackfin_board.h new file mode 100644 index 0000000..31c16a2 --- /dev/null +++ b/lib_blackfin/blackfin_board.h @@ -0,0 +1,62 @@ +/* + * U-boot - blackfin_board.h + * + * Copyright (c) 2005 blackfin.uclinux.org + * + * (C) Copyright 2000-2004 + * 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 + */ + +#ifndef __BLACKFIN_BOARD_H__ +#define __BLACKFIN_BOARD_H__ + +extern void timer_init(void); +extern void init_IRQ(void); +extern void rtc_init(void); + +extern ulong uboot_end_data; +extern ulong uboot_end; + +ulong monitor_flash_len; + + +#define VERSION_STRING_SIZE 150 /* including 40 bytes buffer to change any string */ +#define VERSION_STRING_FORMAT "%s (%s - %s)\n" +#define VERSION_STRING U_BOOT_VERSION, __DATE__, __TIME__ + +char version_string[VERSION_STRING_SIZE]; + +int *g_addr; +static ulong mem_malloc_start; +static ulong mem_malloc_end; +static ulong mem_malloc_brk; +extern char _sram_in_sdram_start[]; +extern char _sram_inst_size[]; +#ifdef DEBUG +static void display_global_data(void); +#endif + +/* definitions used to check the SMC card availability */ +#define SMC_BASE_ADDRESS CONFIG_SMC91111_BASE +#define UPPER_BYTE_MASK 0xFF00 +#define SMC_IDENT 0x3300 + +#endif diff --git a/lib_blackfin/board.c b/lib_blackfin/board.c new file mode 100644 index 0000000..55d13fa --- /dev/null +++ b/lib_blackfin/board.c @@ -0,0 +1,282 @@ +/* + * U-boot - board.c First C file to be called contains init routines + * + * Copyright (c) 2005 blackfin.uclinux.org + * + * (C) Copyright 2000-2004 + * 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 <common.h> +#include <command.h> +#include <malloc.h> +#include <devices.h> +#include <version.h> +#include <net.h> +#include <environment.h> +#include "blackfin_board.h" +#include "../drivers/smc91111.h" + +extern flash_info_t flash_info[]; + + +static void mem_malloc_init(void) +{ + mem_malloc_start = CFG_MALLOC_BASE; + mem_malloc_end = (CFG_MALLOC_BASE + CFG_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); +} + +static int display_banner(void) +{ + sprintf(version_string, VERSION_STRING_FORMAT, VERSION_STRING); + printf("%s\n", version_string); + return (0); +} + +static void display_flash_config(ulong size) +{ + puts("FLASH: "); + print_size(size, "\n"); + return; +} + +static int init_baudrate(void) +{ + DECLARE_GLOBAL_DATA_PTR; + + uchar tmp[64]; + 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); +} + +#ifdef DEBUG +static void display_global_data(void) +{ + DECLARE_GLOBAL_DATA_PTR; + bd_t *bd; + bd = gd->bd; + printf("--flags:%x\n", gd->flags); + printf("--board_type:%x\n", gd->board_type); + printf("--baudrate:%x\n", gd->baudrate); + printf("--have_console:%x\n", gd->have_console); + printf("--ram_size:%x\n", gd->ram_size); + printf("--reloc_off:%x\n", gd->reloc_off); + printf("--env_addr:%x\n", gd->env_addr); + printf("--env_valid:%x\n", gd->env_valid); + printf("--bd:%x %x\n", gd->bd, bd); + printf("---bi_baudrate:%x\n", bd->bi_baudrate); + printf("---bi_ip_addr:%x\n", bd->bi_ip_addr); + printf("---bi_enetaddr:%x %x %x %x %x %x\n", + bd->bi_enetaddr[0], + bd->bi_enetaddr[1], + bd->bi_enetaddr[2], + bd->bi_enetaddr[3], + bd->bi_enetaddr[4], + bd->bi_enetaddr[5]); + printf("---bi_arch_number:%x\n", bd->bi_arch_number); + printf("---bi_boot_params:%x\n", bd->bi_boot_params); + printf("---bi_memstart:%x\n", bd->bi_memstart); + printf("---bi_memsize:%x\n", bd->bi_memsize); + printf("---bi_flashstart:%x\n", bd->bi_flashstart); + printf("---bi_flashsize:%x\n", bd->bi_flashsize); + printf("---bi_flashoffset:%x\n", bd->bi_flashoffset); + printf("--jt:%x *:%x\n", gd->jt, *(gd->jt)); +} +#endif + +/* + * 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". + */ + +void board_init_f(ulong bootflag) +{ + DECLARE_GLOBAL_DATA_PTR; + ulong addr; + bd_t *bd; + + gd = (gd_t *) (CFG_GBL_DATA_ADDR); + memset((void *) gd, 0, sizeof(gd_t)); + + /* Board data initialization */ + addr = (CFG_GBL_DATA_ADDR + sizeof(gd_t)); + + /* Align to 4 byte boundary */ + addr &= ~(4 - 1); + bd = (bd_t*)addr; + gd->bd = bd; + memset((void *) bd, 0, sizeof(bd_t)); + + /* Initialize */ + init_IRQ(); + env_init(); /* initialize environment */ + init_baudrate(); /* initialze baudrate settings */ + serial_init(); /* serial communications setup */ + console_init_f(); + display_banner(); /* say that we are here */ + checkboard(); +#if defined(CONFIG_RTC_BF533) && (CONFIG_COMMANDS & CFG_CMD_DATE) + rtc_init(); +#endif + timer_init(); + printf("Clock: VCO: %lu MHz, Core: %lu MHz, System: %lu MHz\n", \ + CONFIG_VCO_HZ/1000000, CONFIG_CCLK_HZ/1000000, CONFIG_SCLK_HZ/1000000); + printf("SDRAM: "); + print_size(initdram(0), "\n"); + board_init_r((gd_t *) gd, 0x20000010); +} + +void board_init_r(gd_t * id, ulong dest_addr) +{ + DECLARE_GLOBAL_DATA_PTR; + ulong size; + extern void malloc_bin_reloc(void); + char *s, *e; + bd_t *bd; + int i; + gd = id; + gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */ + bd = gd->bd; + +#if CONFIG_STAMP + /* There are some other pointer constants we must deal with */ + /* configure available FLASH banks */ + size = flash_init(); + display_flash_config(size); + flash_protect(FLAG_PROTECT_SET, CFG_FLASH_BASE, CFG_FLASH_BASE + 0x1ffff, &flash_info[0]); + bd->bi_flashstart = CFG_FLASH_BASE; + bd->bi_flashsize = size; + bd->bi_flashoffset = 0; +#else + bd->bi_flashstart = 0; + bd->bi_flashsize = 0; + bd->bi_flashoffset = 0; +#endif + /* initialize malloc() area */ + mem_malloc_init(); + malloc_bin_reloc(); + + /* relocate environment function pointers etc. */ + env_relocate(); + + /* board MAC address */ + s = getenv("ethaddr"); + for (i = 0; i < 6; ++i) { + bd->bi_enetaddr[i] = s ? simple_strtoul(s, &e, 16) : 0; + if (s) + s = (*e) ? e + 1 : e; + } + + /* IP Address */ + bd->bi_ip_addr = getenv_IPaddr("ipaddr"); + + /* Initialize devices */ + devices_init(); + jumptable_init(); + + /* Initialize the console (after the relocation and devices init) */ + console_init_r(); + + /* Initialize from environment */ + if ((s = getenv("loadaddr")) != NULL) { + load_addr = simple_strtoul(s, NULL, 16); + } +#if (CONFIG_COMMANDS & CFG_CMD_NET) + if ((s = getenv("bootfile")) != NULL) { + copy_filename(BootFile, s, sizeof(BootFile)); + } +#endif +#if defined(CONFIG_MISC_INIT_R) + /* miscellaneous platform dependent initialisations */ + misc_init_r(); +#endif + +#ifdef CONFIG_DRIVER_SMC91111 +#ifdef SHARED_RESOURCES + /* Switch to Ethernet */ + swap_to(ETHERNET); +#endif + if ( (SMC_inw(BANK_SELECT) & UPPER_BYTE_MASK) != SMC_IDENT ) { + printf("ERROR: Can't find SMC91111 at address %x\n", SMC_BASE_ADDRESS); + } else { + printf("Net: SMC91111 at 0x%08X\n", SMC_BASE_ADDRESS); + } + +#ifdef SHARED_RESOURCES + swap_to(FLASH); +#endif +#endif +#ifdef CONFIG_SOFT_I2C + init_func_i2c(); +#endif + +#ifdef DEBUG + display_global_data(void); +#endif + + /* main_loop() can return to retry autoboot, if so just run it again. */ + for (;;) { + main_loop(); + } +} + +#ifdef CONFIG_SOFT_I2C +static int init_func_i2c (void) +{ + puts ("I2C: "); + i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE); + puts ("ready\n"); + return (0); +} +#endif + +void hang(void) +{ + puts("### ERROR ### Please RESET the board ###\n"); + for (;;); +} diff --git a/lib_blackfin/cache.c b/lib_blackfin/cache.c new file mode 100644 index 0000000..847278d --- /dev/null +++ b/lib_blackfin/cache.c @@ -0,0 +1,40 @@ +/* + * U-boot - cache.c + * + * Copyright (c) 2005 blackfin.uclinux.org + * + * (C) Copyright 2000-2004 + * 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 + */ + +/* for now: just dummy functions to satisfy the linker */ +extern void blackfin_icache_range (unsigned long *, unsigned long *); +extern void blackfin_dcache_range (unsigned long *, unsigned long *); +void flush_cache (unsigned long dummy1, unsigned long dummy2) +{ + if (icache_status ()) { + blackfin_icache_flush_range (dummy1, dummy1 + dummy2); + } + if (dcache_status ()) { + blackfin_dcache_flush_range (dummy1, dummy1 + dummy2); + } + return; +} diff --git a/lib_blackfin/muldi3.c b/lib_blackfin/muldi3.c new file mode 100644 index 0000000..1fc34e3 --- /dev/null +++ b/lib_blackfin/muldi3.c @@ -0,0 +1,92 @@ +/* + * U-boot - muldi3.c contains routines for mult and div + * + * Copyright (c) 2005 blackfin.uclinux.org + * + * 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 + */ + +/* Generic function got from GNU gcc package, libgcc2.c */ +#ifndef SI_TYPE_SIZE +#define SI_TYPE_SIZE 32 +#endif +#define __ll_B (1L << (SI_TYPE_SIZE / 2)) +#define __ll_lowpart(t) ((USItype) (t) % __ll_B) +#define __ll_highpart(t) ((USItype) (t) / __ll_B) +#define BITS_PER_UNIT 8 + +#if !defined (umul_ppmm) +#define umul_ppmm(w1, w0, u, v) \ +do { \ + USItype __x0, __x1, __x2, __x3; \ + USItype __ul, __vl, __uh, __vh; \ + \ + __ul = __ll_lowpart (u); \ + __uh = __ll_highpart (u); \ + __vl = __ll_lowpart (v); \ + __vh = __ll_highpart (v); \ + \ + __x0 = (USItype) __ul * __vl; \ + __x1 = (USItype) __ul * __vh; \ + __x2 = (USItype) __uh * __vl; \ + __x3 = (USItype) __uh * __vh; \ + \ + __x1 += __ll_highpart (__x0);/* this can't give carry */ \ + __x1 += __x2; /* but this indeed can */ \ + if (__x1 < __x2) /* did we get it? */ \ + __x3 += __ll_B; /* yes, add it in the proper pos. */ \ + \ + (w1) = __x3 + __ll_highpart (__x1); \ + (w0) = __ll_lowpart (__x1) * __ll_B + __ll_lowpart (__x0); \ +} while (0) +#endif + +#if !defined (__umulsidi3) +#define __umulsidi3(u, v) \ + ({DIunion __w; \ + umul_ppmm (__w.s.high, __w.s.low, u, v); \ + __w.ll; }) +#endif + +typedef unsigned int USItype __attribute__ ((mode (SI))); +typedef int SItype __attribute__ ((mode (SI))); +typedef int DItype __attribute__ ((mode (DI))); +typedef int word_type __attribute__ ((mode (__word__))); + +struct DIstruct {SItype low, high;}; +typedef union +{ + struct DIstruct s; + DItype ll; +} DIunion; + +DItype __muldi3 (DItype u, DItype v) +{ + DIunion w; + DIunion uu, vv; + + uu.ll = u, + vv.ll = v; + /* panic("kernel panic for __muldi3"); */ + w.ll = __umulsidi3 (uu.s.low, vv.s.low); + w.s.high += ((USItype) uu.s.low * (USItype) vv.s.high + + (USItype) uu.s.high * (USItype) vv.s.low); + + return w.ll; +} |