u-boot-1.1.4-imx21-jk1.patch

针对freescale imx21的linux2.6的补丁。因为官方只提供2.4内核

diff -X linux/Documentation/dontdiff -Nur u-boot-1.1.4/board/fs3/config.mk u-boot-1.1.4.imx21/board/fs3/config.mk
--- u-boot-1.1.4/board/fs3/config.mk	1970-01-01 01:00:00.000000000 +0100
+++ u-boot-1.1.4.imx21/board/fs3/config.mk	2006-07-03 22:25:00.000000000 +0200
@@ -0,0 +1,23 @@
+#
+# board/mx21ads/config.mk
+#
+# (C) Copyright 2006 Jochen Karrer
+#
+#
+# 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
+
+TEXT_BASE = 0xC0400000
+
diff -X linux/Documentation/dontdiff -Nur u-boot-1.1.4/board/fs3/flash.c u-boot-1.1.4.imx21/board/fs3/flash.c
--- u-boot-1.1.4/board/fs3/flash.c	1970-01-01 01:00:00.000000000 +0100
+++ u-boot-1.1.4.imx21/board/fs3/flash.c	2006-07-11 15:11:34.000000000 +0200
@@ -0,0 +1,596 @@
+/*
+ * (C) 2000-2004 Wolfgang Denk, DENX Software Engineering, [e-mail].
+ * (C) 2003 August Hoeraendl, Logotronic GmbH
+ *
+ * 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
+ */
+
+#undef CONFIG_FLASH_16BIT
+
+#include <common.h>
+
+//define FLASH_BANK_SIZE MX21FS3_FLASH_BANK_SIZE
+#define MAIN_SECT_SIZE  MX21FS3_FLASH_SECT_SIZE
+
+flash_info_t flash_info[CFG_MAX_FLASH_BANKS];	/* info for FLASH chips   */
+
+/*
+ * NOTE - CONFIG_FLASH_16BIT means the CPU interface is 16-bit, it
+ *        has nothing to do with the flash chip being 8-bit or 16-bit.
+ */
+#ifdef CONFIG_FLASH_16BIT
+typedef unsigned short FLASH_PORT_WIDTH;
+typedef volatile unsigned short FLASH_PORT_WIDTHV;
+
+#define	FLASH_ID_MASK	0xFFFF
+#else
+typedef unsigned long FLASH_PORT_WIDTH;
+typedef volatile unsigned long FLASH_PORT_WIDTHV;
+
+#define	FLASH_ID_MASK	0xFFFFFFFF
+#endif
+
+#define FPW	FLASH_PORT_WIDTH
+#define FPWV	FLASH_PORT_WIDTHV
+
+#define ORMASK(size) ((-size) & OR_AM_MSK)
+
+/*-----------------------------------------------------------------------
+ * Functions
+ */
+#if 0
+static ulong flash_get_size(FPWV * addr, flash_info_t * info);
+static void flash_get_offsets(ulong base, flash_info_t * info);
+#endif
+
+static void flash_reset(flash_info_t * info);
+static int write_word_amd(flash_info_t * info, FPWV * dest, FPW data);
+#define write_word(in, de, da)   write_word_amd(in, de, da)
+#ifdef CFG_FLASH_PROTECTION
+static void flash_sync_real_protect(flash_info_t * info);
+#endif
+
+/*-----------------------------------------------------------------------
+ * flash_init()
+ *
+ * sets up flash_info and returns size of FLASH (bytes)
+ */
+
+static ulong 
+flash_get_size (FPWV *addr, flash_info_t * info)
+{
+       	FPW vendor_id,device_id;
+	int i;
+	int nr_regions;
+	ulong flashbase = (ulong)addr;
+	ulong offset;
+	int dir = 1;
+
+        /* Write auto select command: read Manufacturer ID */
+	addr[0x0555] = (FPW)0x00AA00AA;
+        addr[0x02AA] = (FPW)0x00550055;
+        addr[0x0555] = (FPW)0x00900090;
+
+	vendor_id = addr[0];
+	device_id = addr[1];
+	if(vendor_id == (FPW)AMD_MANUFACT) {
+		info->flash_id = FLASH_MAN_AMD; 
+	}
+
+        switch (device_id) {
+        	case (FPW) (AMD_ID_LV160T): 
+                	info->flash_id += FLASH_AM160LV;
+			dir = -1;
+			break;
+
+        	case (FPW) (AMD_ID_LV160B):
+                	info->flash_id += FLASH_AM160LV;
+			dir=1;
+			break;
+	}
+	info->size = 0;
+	info->sector_count = 0;
+	addr[0] = (FPW) 0x00FF00FF;     /* restore read mode */
+	addr[0x055] = (FPW)0x00980098;
+	nr_regions = addr[0x2c] & 0xff;
+	if(nr_regions > 4) {
+		printf("Illegal number of erase regions (%d)\n",nr_regions);
+		nr_regions = 4;
+	}
+	for(i = 0,offset = 0;i<4;i++) {
+		int j;
+		int idx; 
+		uint16_t nsects;
+		uint32_t sectsize;
+
+		if(dir==1) {
+			idx = i<<2;
+		} else {
+			idx = (3-i)<<2;
+		}
+		nsects = (addr[0x2d + idx] & 0xff) + 256 * (addr[0x2e + idx] & 0xff) + 1; 
+		sectsize = (addr[0x2f + idx] & 0xff) + 256 *(addr[0x30 + idx] & 0xff);
+		sectsize *= 256;
+		if(!sectsize) {
+			continue;
+		}
+		if(sizeof(FPW) == 4) {
+			sectsize <<= 1;
+		}
+		for (j = 0; j < nsects; j++) {
+			info->start[info->sector_count] = flashbase + info->size;
+			info->size+=sectsize;
+			info->sector_count++;
+		}
+	}
+	addr[0] = (FPW) 0x00FF00FF;     /* restore read mode */
+}
+
+ulong
+flash_init(void)
+{
+	int i;
+	ulong size = 0;
+
+	for (i = 0; i < CFG_MAX_FLASH_BANKS; i++) {
+		ulong flashbase = 0;
+		flash_info[i].size = 0;
+		flash_info[i].sector_count = 0;
+		memset(flash_info[i].protect, 0, CFG_MAX_FLASH_SECT);
+		switch (i) {
+		case 0:
+			flashbase = MX21FS3_FLASH_BASE;
+			break;
+		default:
+			panic("configured too many flash banks!\n");
+			break;
+		}
+		flash_get_size((FPW*)flashbase,&flash_info[i]);
+	}
+
+	/* Protect monitor and environment sectors */
+	flash_protect(FLAG_PROTECT_SET,
+		      CFG_FLASH_BASE,
+		      CFG_FLASH_BASE + _bss_start - _armboot_start,
+		      &flash_info[0]);
+
+	flash_protect(FLAG_PROTECT_SET,
+		      CFG_ENV_ADDR,
+		      CFG_ENV_ADDR + CFG_ENV_SIZE - 1, &flash_info[0]);
+
+	return size;
+}
+
+/*-----------------------------------------------------------------------
+ */
+static void
+flash_reset(flash_info_t * info)
+{
+	FPWV *base = (FPWV *) (info->start[0]);
+
+	/* Put FLASH back in read mode */
+	if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL)
+		*base = (FPW) 0x00FF00FF;	/* Intel Read Mode */
+	else if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_AMD)
+		*base = (FPW) 0x00F000F0;	/* AMD Read Mode */
+}
+
+/*-----------------------------------------------------------------------
+ */
+
+void
+flash_print_info(flash_info_t * info)
+{
+	int i;
+	uchar *boottype;
+	uchar *bootletter;
+	uchar *fmt;
+	uchar botbootletter[] = "B";
+	uchar topbootletter[] = "T";
+	uchar botboottype[] = "bottom boot sector";
+	uchar topboottype[] = "top boot sector";
+
+	if (info->flash_id == FLASH_UNKNOWN) {
+		printf("missing or unknown FLASH type\n");
+		return;
+	}
+
+	switch (info->flash_id & FLASH_VENDMASK) {
+	case FLASH_MAN_AMD:
+		printf("AMD ");
+		break;
+	case FLASH_MAN_BM:
+		printf("BRIGHT MICRO ");
+		break;
+	case FLASH_MAN_FUJ:
+		printf("FUJITSU ");
+		break;
+	case FLASH_MAN_SST:
+		printf("SST ");
+		break;
+	case FLASH_MAN_STM:
+		printf("STM ");
+		break;
+	case FLASH_MAN_INTEL:
+		printf("INTEL ");
+		break;
+	default:
+		printf("Unknown Vendor ");
+		break;
+	}
+
+	/* check for top or bottom boot, if it applies */
+	if (info->flash_id & FLASH_BTYPE) {
+		boottype = botboottype;
+		bootletter = botbootletter;
+	} else {
+		boottype = topboottype;
+		bootletter = topbootletter;
+	}
+
+	switch (info->flash_id & FLASH_TYPEMASK) {
+	case FLASH_AM640U:
+		fmt = "29LV641D (64 Mbit, uniform sectors)\n";
+		break;
+
+	case FLASH_AM160LV:
+		fmt = "29LV160D%s (16 Mbit non uniform sectors)\n";
+		break;
+
+	default:
+		fmt = "Unknown Chip Type\n";
+		printf(" Unknown type %04x\n",info->flash_id);
+		break;
+	}
+
+	printf(fmt, bootletter, boottype);
+
+	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");
+}
+
+/*-----------------------------------------------------------------------
+ */
+
+
+//#ifdef CFG_FLASH_PROTECTION
+
+/*-----------------------------------------------------------------------
+ */
+
+int
+flash_erase(flash_info_t * info, int s_first, int s_last)
+{
+	FPWV *addr;
+	int flag, prot, sect;
+	int intel = (info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL;
+	ulong start, now, last;
+	int rcode = 0;
+
+	if ((s_first < 0) || (s_first > s_last)) {
+		if (info->flash_id == FLASH_UNKNOWN) {
+			printf("- missing\n");
+		} else {
+			printf("- no sectors to erase\n");
+		}
+		return 1;
+	}
+
+	switch (info->flash_id & FLASH_TYPEMASK) {
+	case FLASH_AM640U:
+		break;
+	case FLASH_AM160LV:
+		break;
+	case FLASH_UNKNOWN:
+	default:
+		printf("Can't erase unknown flash type %08lx - aborted\n",
+		       info->flash_id);
+		return 1;
+	}
+
+	prot = 0;
+	for (sect = s_first; sect <= s_last; ++sect) {
+		if (info->protect[sect]) {
+			prot++;
+		}
+	}
+
+	if (prot) {
+		printf("- Warning: %d protected sectors will not be erased!\n",
+		       prot);
+	} else {
+		printf("\n");
+	}
+
+	start = get_timer(0);
+	last = start;
+
+	/* Start erase on unprotected sectors */
+	for (sect = s_first; sect <= s_last && rcode == 0; sect++) {
+
+		if (info->protect[sect] != 0)	/* protected, skip it */
+			continue;
+
+		/* Disable interrupts which might cause a timeout here */
+		flag = disable_interrupts();
+
+		addr = (FPWV *) (info->start[sect]);
+		if (intel) {
+			*addr = (FPW) 0x00500050;	/* clear status register */
+			*addr = (FPW) 0x00200020;	/* erase setup */
+			*addr = (FPW) 0x00D000D0;	/* erase confirm */
+		} else {
+			/* must be AMD style if not Intel */
+			FPWV *base;	/* first address in bank */
+
+			base = (FPWV *) (info->start[0]);
+			base[0x0555] = (FPW) 0x00AA00AA;	/* unlock */
+			base[0x02AA] = (FPW) 0x00550055;	/* unlock */
+			base[0x0555] = (FPW) 0x00800080;	/* erase mode */
+			base[0x0555] = (FPW) 0x00AA00AA;	/* unlock */
+			base[0x02AA] = (FPW) 0x00550055;	/* unlock */
+			*addr = (FPW) 0x00300030;	/* erase sector */
+		}
+
+		/* re-enable interrupts if necessary */
+		if (flag)
+			enable_interrupts();
+
+		/* wait at least 50us for AMD, 80us for Intel.
+		 * Let's wait 1 ms.
+		 */
+		udelay(1000);
+
+		while ((*addr & (FPW) 0x00800080) != (FPW) 0x00800080) {
+			if ((now = get_timer(0)) - start > CFG_FLASH_ERASE_TOUT) {
+				printf("Timeout\n");
+
+				if (intel) {
+					/* suspend erase        */
+					*addr = (FPW) 0x00B000B0;
+				}
+
+				flash_reset(info);	/* reset to read mode */
+				rcode = 1;	/* failed */
+				break;
+			}
+
+			/* show that we're waiting */
+			if ((now - last) > 1000) {	/* every second */
+				putc('.');
+				last = now;
+			}
+		}
+
+		flash_reset(info);	/* reset to read mode   */
+	}
+
+	printf(" done\n");
+	return rcode;
+}
+
+/*-----------------------------------------------------------------------
+ * Copy memory to flash, returns:
+ * 0 - OK
+ * 1 - write timeout
+ * 2 - Flash not erased
+ */
+int
+bad_write_buff(flash_info_t * info, uchar * src, ulong addr, ulong cnt)
+{
+	FPW data = 0;		/* 16 or 32 bit word, matches flash bus width on MPC8XX */
+	int bytes;		/* number of bytes to program in current word         */
+	int left;		/* number of bytes left to program                    */
+	int i, res;
+
+	for (left = cnt, res = 0;
+	     left > 0 && res == 0;
+	     addr += sizeof (data), left -= sizeof (data) - bytes) {
+
+		bytes = addr & (sizeof (data) - 1);
+		addr &= ~(sizeof (data) - 1);
+
+		/* combine source and destination data so can program
+		 * an entire word of 16 or 32 bits
+		 */
+		for (i = 0; i < sizeof (data); i++) {
+			data <<= 8;
+			if (i < bytes || i - bytes >= left)
+				data += *((uchar *) addr + i);
+			else
+				data += *src++;
+		}
+
+		/* write one word to the flash */
+		switch (info->flash_id & FLASH_VENDMASK) {
+		case FLASH_MAN_AMD:
+			res = write_word_amd(info, (FPWV *) addr, data);
+			break;
+		default:
+			/* unknown flash type, error! */
+			printf("missing or unknown FLASH type\n");
+			res = 1;	/* not really a timeout, but gives error */
+			break;
+		}
+	}
+
+	return (res);
+}
+
+/**
+ * write_buf: - Copy memory to flash.
+ *