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authorwdenk <wdenk>2002-08-27 05:55:31 +0000
committerwdenk <wdenk>2002-08-27 05:55:31 +0000
commit3863585bb1c1e8f89b4a2e90c4b83f8b81b8e029 (patch)
treed23ca6b76e08fd06d675c32f72d1082173e7eaf1 /common/cmd_mem.c
parentf8cac651b33efa270e4dfa1292d01a3b5d7a62cf (diff)
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Initial revision
Diffstat (limited to 'common/cmd_mem.c')
-rw-r--r--common/cmd_mem.c850
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diff --git a/common/cmd_mem.c b/common/cmd_mem.c
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+++ b/common/cmd_mem.c
@@ -0,0 +1,850 @@
+/*
+ * (C) Copyright 2000
+ * 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
+ */
+
+/*
+ * Memory Functions
+ *
+ * Copied from FADS ROM, Dan Malek (dmalek@jlc.net)
+ */
+
+#include <common.h>
+#include <command.h>
+#include <cmd_mem.h>
+
+#if (CONFIG_COMMANDS & (CFG_CMD_MEMORY | CFG_CMD_PCI | CFG_CMD_I2C))
+int cmd_get_data_size(char* arg, int default_size)
+{
+ /* Check for a size specification .b, .w or .l.
+ */
+ int len = strlen(arg);
+ if (len > 2 && arg[len-2] == '.') {
+ switch(arg[len-1]) {
+ case 'b':
+ return 1;
+ case 'w':
+ return 2;
+ case 'l':
+ return 4;
+ }
+ }
+ return default_size;
+}
+#endif
+
+#if (CONFIG_COMMANDS & CFG_CMD_MEMORY)
+
+#ifdef CMD_MEM_DEBUG
+#define PRINTF(fmt,args...) printf (fmt ,##args)
+#else
+#define PRINTF(fmt,args...)
+#endif
+
+static int mod_mem(cmd_tbl_t *, int, int, int, char *[]);
+
+/* Display values from last command.
+ * Memory modify remembered values are different from display memory.
+ */
+uint dp_last_addr, dp_last_size;
+uint dp_last_length = 0x40;
+uint mm_last_addr, mm_last_size;
+
+static ulong base_address = 0;
+
+/* Memory Display
+ *
+ * Syntax:
+ * md{.b, .w, .l} {addr} {len}
+ */
+#define DISP_LINE_LEN 16
+int do_mem_md ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ ulong addr, size, length;
+ ulong i, nbytes, linebytes;
+ u_char *cp;
+ int rc = 0;
+
+ /* We use the last specified parameters, unless new ones are
+ * entered.
+ */
+ addr = dp_last_addr;
+ size = dp_last_size;
+ length = dp_last_length;
+
+ if (argc < 2) {
+ printf ("Usage:\n%s\n", cmdtp->usage);
+ return 1;
+ }
+
+ if ((flag & CMD_FLAG_REPEAT) == 0) {
+ /* New command specified. Check for a size specification.
+ * Defaults to long if no or incorrect specification.
+ */
+ size = cmd_get_data_size(argv[0], 4);
+
+ /* Address is specified since argc > 1
+ */
+ addr = simple_strtoul(argv[1], NULL, 16);
+ addr += base_address;
+
+ /* If another parameter, it is the length to display.
+ * Length is the number of objects, not number of bytes.
+ */
+ if (argc > 2)
+ length = simple_strtoul(argv[2], NULL, 16);
+ }
+
+ /* Print the lines.
+ *
+ * We buffer all read data, so we can make sure data is read only
+ * once, and all accesses are with the specified bus width.
+ */
+ nbytes = length * size;
+ do {
+ char linebuf[DISP_LINE_LEN];
+ uint *uip = (uint *)linebuf;
+ ushort *usp = (ushort *)linebuf;
+ u_char *ucp = (u_char *)linebuf;
+
+ printf("%08lx:", addr);
+ linebytes = (nbytes>DISP_LINE_LEN)?DISP_LINE_LEN:nbytes;
+ for (i=0; i<linebytes; i+= size) {
+ if (size == 4) {
+ printf(" %08x", (*uip++ = *((uint *)addr)));
+ } else if (size == 2) {
+ printf(" %04x", (*usp++ = *((ushort *)addr)));
+ } else {
+ printf(" %02x", (*ucp++ = *((u_char *)addr)));
+ }
+ addr += size;
+ }
+ printf(" ");
+ cp = linebuf;
+ for (i=0; i<linebytes; i++) {
+ if ((*cp < 0x20) || (*cp > 0x7e))
+ printf(".");
+ else
+ printf("%c", *cp);
+ cp++;
+ }
+ printf("\n");
+ nbytes -= linebytes;
+ if (ctrlc()) {
+ rc = 1;
+ break;
+ }
+ } while (nbytes > 0);
+
+ dp_last_addr = addr;
+ dp_last_length = length;
+ dp_last_size = size;
+ return (rc);
+}
+
+int do_mem_mm ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ return mod_mem (cmdtp, 1, flag, argc, argv);
+}
+int do_mem_nm ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ return mod_mem (cmdtp, 0, flag, argc, argv);
+}
+
+int do_mem_mw ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ ulong addr, size, writeval, count;
+
+ if ((argc < 3) || (argc > 4)) {
+ printf ("Usage:\n%s\n", cmdtp->usage);
+ return 1;
+ }
+
+ /* Check for size specification.
+ */
+ size = cmd_get_data_size(argv[0], 4);
+
+ /* Address is specified since argc > 1
+ */
+ addr = simple_strtoul(argv[1], NULL, 16);
+ addr += base_address;
+
+ /* Get the value to write.
+ */
+ writeval = simple_strtoul(argv[2], NULL, 16);
+
+ /* Count ? */
+ if (argc == 4) {
+ count = simple_strtoul(argv[3], NULL, 16);
+ } else {
+ count = 1;
+ }
+
+ while (count-- > 0) {
+ if (size == 4)
+ *((ulong *)addr) = (ulong )writeval;
+ else if (size == 2)
+ *((ushort *)addr) = (ushort)writeval;
+ else
+ *((u_char *)addr) = (u_char)writeval;
+ addr += size;
+ }
+ return 0;
+}
+
+int do_mem_cmp (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ ulong size, addr1, addr2, count, ngood;
+ int rcode = 0;
+
+ if (argc != 4) {
+ printf ("Usage:\n%s\n", cmdtp->usage);
+ return 1;
+ }
+
+ /* Check for size specification.
+ */
+ size = cmd_get_data_size(argv[0], 4);
+
+ addr1 = simple_strtoul(argv[1], NULL, 16);
+ addr1 += base_address;
+
+ addr2 = simple_strtoul(argv[2], NULL, 16);
+ addr2 += base_address;
+
+ count = simple_strtoul(argv[3], NULL, 16);
+
+ ngood = 0;
+
+ while (count-- > 0) {
+ if (size == 4) {
+ ulong word1 = *(ulong *)addr1;
+ ulong word2 = *(ulong *)addr2;
+ if (word1 != word2) {
+ printf("word at 0x%08lx (0x%08lx) "
+ "!= word at 0x%08lx (0x%08lx)\n",
+ addr1, word1, addr2, word2);
+ rcode = 1;
+ break;
+ }
+ }
+ else if (size == 2) {
+ ushort hword1 = *(ushort *)addr1;
+ ushort hword2 = *(ushort *)addr2;
+ if (hword1 != hword2) {
+ printf("halfword at 0x%08lx (0x%04x) "
+ "!= halfword at 0x%08lx (0x%04x)\n",
+ addr1, hword1, addr2, hword2);
+ rcode = 1;
+ break;
+ }
+ }
+ else {
+ u_char byte1 = *(u_char *)addr1;
+ u_char byte2 = *(u_char *)addr2;
+ if (byte1 != byte2) {
+ printf("byte at 0x%08lx (0x%02x) "
+ "!= byte at 0x%08lx (0x%02x)\n",
+ addr1, byte1, addr2, byte2);
+ rcode = 1;
+ break;
+ }
+ }
+ ngood++;
+ addr1 += size;
+ addr2 += size;
+ }
+
+ printf("Total of %ld %s%s were the same\n",
+ ngood, size == 4 ? "word" : size == 2 ? "halfword" : "byte",
+ ngood == 1 ? "" : "s");
+ return rcode;
+}
+
+int do_mem_cp ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ ulong addr, size, dest, count;
+
+ if (argc != 4) {
+ printf ("Usage:\n%s\n", cmdtp->usage);
+ return 1;
+ }
+
+ /* Check for size specification.
+ */
+ size = cmd_get_data_size(argv[0], 4);
+
+ addr = simple_strtoul(argv[1], NULL, 16);
+ addr += base_address;
+
+ dest = simple_strtoul(argv[2], NULL, 16);
+ dest += base_address;
+
+ count = simple_strtoul(argv[3], NULL, 16);
+
+ if (count == 0) {
+ puts ("Zero length ???\n");
+ return 1;
+ }
+
+#ifndef CFG_NO_FLASH
+ /* check if we are copying to Flash */
+ if (addr2info(dest) != NULL) {
+ int rc;
+
+ printf ("Copy to Flash... ");
+
+ rc = flash_write ((uchar *)addr, dest, count*size);
+ if (rc != 0) {
+ flash_perror (rc);
+ return (1);
+ }
+ puts ("done\n");
+ return 0;
+ }
+#endif
+
+ while (count-- > 0) {
+ if (size == 4)
+ *((ulong *)dest) = *((ulong *)addr);
+ else if (size == 2)
+ *((ushort *)dest) = *((ushort *)addr);
+ else
+ *((u_char *)dest) = *((u_char *)addr);
+ addr += size;
+ dest += size;
+ }
+ return 0;
+}
+
+int do_mem_base (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ if (argc > 1) {
+ /* Set new base address.
+ */
+ base_address = simple_strtoul(argv[1], NULL, 16);
+ }
+ /* Print the current base address.
+ */
+ printf("Base Address: 0x%08lx\n", base_address);
+ return 0;
+}
+
+int do_mem_loop (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ ulong addr, size, length, i, junk;
+ volatile uint *longp;
+ volatile ushort *shortp;
+ volatile u_char *cp;
+
+ if (argc < 3) {
+ printf ("Usage:\n%s\n", cmdtp->usage);
+ return 1;
+ }
+
+ /* Check for a size spefication.
+ * Defaults to long if no or incorrect specification.
+ */
+ size = cmd_get_data_size(argv[0], 4);
+
+ /* Address is always specified.
+ */
+ addr = simple_strtoul(argv[1], NULL, 16);
+
+ /* Length is the number of objects, not number of bytes.
+ */
+ length = simple_strtoul(argv[2], NULL, 16);
+
+ /* We want to optimize the loops to run as fast as possible.
+ * If we have only one object, just run infinite loops.
+ */
+ if (length == 1) {
+ if (size == 4) {
+ longp = (uint *)addr;
+ for (;;)
+ i = *longp;
+ }
+ if (size == 2) {
+ shortp = (ushort *)addr;
+ for (;;)
+ i = *shortp;
+ }
+ cp = (u_char *)addr;
+ for (;;)
+ i = *cp;
+ }
+
+ if (size == 4) {
+ for (;;) {
+ longp = (uint *)addr;
+ i = length;
+ while (i-- > 0)
+ junk = *longp++;
+ }
+ }
+ if (size == 2) {
+ for (;;) {
+ shortp = (ushort *)addr;
+ i = length;
+ while (i-- > 0)
+ junk = *shortp++;
+ }
+ }
+ for (;;) {
+ cp = (u_char *)addr;
+ i = length;
+ while (i-- > 0)
+ junk = *cp++;
+ }
+}
+
+/*
+ * Perform a memory test. A more complete alternative test can be
+ * configured using CFG_ALT_MEMTEST. The complete test loops until
+ * interrupted by ctrl-c or by a failure of one of the sub-tests.
+ */
+int do_mem_mtest (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ vu_long *addr, *start, *end;
+ ulong val;
+ ulong readback;
+
+#if defined(CFG_ALT_MEMTEST)
+ vu_long addr_mask;
+ vu_long offset;
+ vu_long test_offset;
+ vu_long pattern;
+ vu_long temp;
+ vu_long anti_pattern;
+ vu_long num_words;
+ vu_long *dummy = NULL;
+ int j;
+ int iterations = 1;
+
+ static const ulong bitpattern[] = {
+ 0x00000001, /* single bit */
+ 0x00000003, /* two adjacent bits */
+ 0x00000007, /* three adjacent bits */
+ 0x0000000F, /* four adjacent bits */
+ 0x00000005, /* two non-adjacent bits */
+ 0x00000015, /* three non-adjacent bits */
+ 0x00000055, /* four non-adjacent bits */
+ 0xaaaaaaaa, /* alternating 1/0 */
+ };
+#else
+ ulong incr;
+ ulong pattern;
+ int rcode = 0;
+#endif
+
+ if (argc > 1) {
+ start = (ulong *)simple_strtoul(argv[1], NULL, 16);
+ } else {
+ start = (ulong *)CFG_MEMTEST_START;
+ }
+
+ if (argc > 2) {
+ end = (ulong *)simple_strtoul(argv[2], NULL, 16);
+ } else {
+ end = (ulong *)(CFG_MEMTEST_END);
+ }
+
+ if (argc > 3) {
+ pattern = (ulong)simple_strtoul(argv[3], NULL, 16);
+ } else {
+ pattern = 0;
+ }
+
+#if defined(CFG_ALT_MEMTEST)
+ printf ("Testing %08x ... %08x:\n", (uint)start, (uint)end);
+ PRINTF("%s:%d: start 0x%p end 0x%p\n",
+ __FUNCTION__, __LINE__, start, end);
+
+ for (;;) {
+ if (ctrlc()) {
+ putc ('\n');
+ return 1;
+ }
+
+ printf("Iteration: %6d\r", iterations);
+ PRINTF("Iteration: %6d\n", iterations);
+ iterations++;
+
+ /*
+ * Data line test: write a pattern to the first
+ * location, write the 1's complement to a 'parking'
+ * address (changes the state of the data bus so a
+ * floating bus doen't give a false OK), and then
+ * read the value back. Note that we read it back
+ * into a variable because the next time we read it,
+ * it might be right (been there, tough to explain to
+ * the quality guys why it prints a failure when the
+ * "is" and "should be" are obviously the same in the
+ * error message).
+ *
+ * Rather than exhaustively testing, we test some
+ * patterns by shifting '1' bits through a field of
+ * '0's and '0' bits through a field of '1's (i.e.
+ * pattern and ~pattern).
+ */
+ addr = start;
+ for (j = 0; j < sizeof(bitpattern)/sizeof(bitpattern[0]); j++) {
+ val = bitpattern[j];
+ for(; val != 0; val <<= 1) {
+ *addr = val;
+ *dummy = ~val; /* clear the test data off of the bus */
+ readback = *addr;
+ if(readback != val) {
+ printf ("FAILURE (data line): "
+ "expected %08lx, actual %08lx\n",
+ val, readback);
+ }
+ *addr = ~val;
+ *dummy = val;
+ readback = *addr;
+ if(readback != ~val) {
+ printf ("FAILURE (data line): "
+ "Is %08lx, should be %08lx\n",
+ val, readback);
+ }
+ }
+ }
+
+ /*
+ * Based on code whose Original Author and Copyright
+ * information follows: Copyright (c) 1998 by Michael
+ * Barr. This software is placed into the public
+ * domain and may be used for any purpose. However,
+ * this notice must not be changed or removed and no
+ * warranty is either expressed or implied by its
+ * publication or distribution.
+ */
+
+ /*
+ * Address line test
+ *
+ * Description: Test the address bus wiring in a
+ * memory region by performing a walking
+ * 1's test on the relevant bits of the
+ * address and checking for aliasing.
+ * This test will find single-bit
+ * address failures such as stuck -high,
+ * stuck-low, and shorted pins. The base
+ * address and size of the region are
+ * selected by the caller.
+ *
+ * Notes: For best results, the selected base
+ * address should have enough LSB 0's to
+ * guarantee single address bit changes.
+ * For example, to test a 64-Kbyte
+ * region, select a base address on a
+ * 64-Kbyte boundary. Also, select the
+ * region size as a power-of-two if at
+ * all possible.
+ *
+ * Returns: 0 if the test succeeds, 1 if the test fails.
+ *
+ * ## NOTE ## Be sure to specify start and end
+ * addresses such that addr_mask has
+ * lots of bits set. For example an
+ * address range of 01000000 02000000 is
+ * bad while a range of 01000000
+ * 01ffffff is perfect.
+ */
+ addr_mask = ((ulong)end - (ulong)start)/sizeof(vu_long);
+ pattern = (vu_long) 0xaaaaaaaa;
+ anti_pattern = (vu_long) 0x55555555;
+
+ PRINTF("%s:%d: addr mask = 0x%.8lx\n",
+ __FUNCTION__, __LINE__,
+ addr_mask);
+ /*
+ * Write the default pattern at each of the
+ * power-of-two offsets.
+ */
+ for (offset = 1; (offset & addr_mask) != 0; offset <<= 1) {
+ start[offset] = pattern;
+ }
+
+ /*
+ * Check for address bits stuck high.
+ */
+ test_offset = 0;
+ start[test_offset] = anti_pattern;
+
+ for (offset = 1; (offset & addr_mask) != 0; offset <<= 1) {
+ temp = start[offset];
+ if (temp != pattern) {
+ printf ("\nFAILURE: Address bit stuck high @ 0x%.8lx:"
+ " expected 0x%.8lx, actual 0x%.8lx\n",
+ (ulong)&start[offset], pattern, temp);
+ return 1;
+ }
+ }
+ start[test_offset] = pattern;
+
+ /*
+ * Check for addr bits stuck low or shorted.
+ */
+ for (test_offset = 1; (test_offset & addr_mask) != 0; test_offset <<= 1) {
+ start[test_offset] = anti_pattern;
+
+ for (offset = 1; (offset & addr_mask) != 0; offset <<= 1) {
+ temp = start[offset];
+ if ((temp != pattern) && (offset != test_offset)) {
+ printf ("\nFAILURE: Address bit stuck low or shorted @"
+ " 0x%.8lx: expected 0x%.8lx, actual 0x%.8lx\n",
+ (ulong)&start[offset], pattern, temp);
+ return 1;
+ }
+ }
+ start[test_offset] = pattern;
+ }
+
+ /*
+ * Description: Test the integrity of a physical
+ * memory device by performing an
+ * increment/decrement test over the
+ * entire region. In the process every
+ * storage bit in the device is tested
+ * as a zero and a one. The base address
+ * and the size of the region are
+ * selected by the caller.
+ *
+ * Returns: 0 if the test succeeds, 1 if the test fails.
+ */
+ num_words = ((ulong)end - (ulong)start)/sizeof(vu_long) + 1;
+
+ /*
+ * Fill memory with a known pattern.
+ */
+ for (pattern = 1, offset = 0; offset < num_words; pattern++, offset++) {
+ start[offset] = pattern;
+ }
+
+ /*
+ * Check each location and invert it for the second pass.
+ */
+ for (pattern = 1, offset = 0; offset < num_words; pattern++, offset++) {
+ temp = start[offset];
+ if (temp != pattern) {
+ printf ("\nFAILURE (read/write) @ 0x%.8lx:"
+ " expected 0x%.8lx, actual 0x%.8lx)\n",
+ (ulong)&start[offset], pattern, temp);
+ return 1;
+ }
+
+ anti_pattern = ~pattern;
+ start[offset] = anti_pattern;
+ }
+
+ /*
+ * Check each location for the inverted pattern and zero it.
+ */
+ for (pattern = 1, offset = 0; offset < num_words; pattern++, offset++) {
+ anti_pattern = ~pattern;
+ temp = start[offset];
+ if (temp != anti_pattern) {
+ printf ("\nFAILURE (read/write): @ 0x%.8lx:"
+ " expected 0x%.8lx, actual 0x%.8lx)\n",
+ (ulong)&start[offset], anti_pattern, temp);
+ return 1;
+ }
+ start[offset] = 0;
+ }
+ }
+
+#else /* The original, quickie test */
+ incr = 1;
+ for (;;) {
+ if (ctrlc()) {
+ putc ('\n');
+ return 1;
+ }
+
+ printf ("\rPattern %08lX Writing..."
+ "%12s"
+ "\b\b\b\b\b\b\b\b\b\b",
+ pattern, "");
+
+ for (addr=start,val=pattern; addr<end; addr++) {
+ *addr = val;
+ val += incr;
+ }
+
+ printf("Reading...");
+
+ for (addr=start,val=pattern; addr<end; addr++) {
+ readback = *addr;
+ if (readback != val) {
+ printf ("\nMem error @ 0x%08X: "
+ "found %08lX, expected %08lX\n",
+ (uint)addr, readback, val);
+ rcode = 1;
+ }
+ val += incr;
+ }
+
+ /*
+ * Flip the pattern each time to make lots of zeros and
+ * then, the next time, lots of ones. We decrement
+ * the "negative" patterns and increment the "positive"
+ * patterns to preserve this feature.
+ */
+ if(pattern & 0x80000000) {
+ pattern = -pattern; /* complement & increment */
+ }
+ else {
+ pattern = ~pattern;
+ }
+ incr = -incr;
+ }
+ return rcode;
+#endif
+}
+
+
+/* Modify memory.
+ *
+ * Syntax:
+ * mm{.b, .w, .l} {addr}
+ * nm{.b, .w, .l} {addr}
+ */
+static int
+mod_mem(cmd_tbl_t *cmdtp, int incrflag, int flag, int argc, char *argv[])
+{
+ ulong addr, size, i;
+ int nbytes;
+ extern char console_buffer[];
+
+ if (argc != 2) {
+ printf ("Usage:\n%s\n", cmdtp->usage);
+ return 1;
+ }
+
+#ifdef CONFIG_BOOT_RETRY_TIME
+ reset_cmd_timeout(); /* got a good command to get here */
+#endif
+ /* We use the last specified parameters, unless new ones are
+ * entered.
+ */
+ addr = mm_last_addr;
+ size = mm_last_size;
+
+ if ((flag & CMD_FLAG_REPEAT) == 0) {
+ /* New command specified. Check for a size specification.
+ * Defaults to long if no or incorrect specification.
+ */
+ size = cmd_get_data_size(argv[0], 4);
+
+ /* Address is specified since argc > 1
+ */
+ addr = simple_strtoul(argv[1], NULL, 16);
+ addr += base_address;
+ }
+
+ /* Print the address, followed by value. Then accept input for
+ * the next value. A non-converted value exits.
+ */
+ do {
+ printf("%08lx:", addr);
+ if (size == 4)
+ printf(" %08x", *((uint *)addr));
+ else if (size == 2)
+ printf(" %04x", *((ushort *)addr));
+ else
+ printf(" %02x", *((u_char *)addr));
+
+ nbytes = readline (" ? ");
+ if (nbytes == 0 || (nbytes == 1 && console_buffer[0] == '-')) {
+ /* <CR> pressed as only input, don't modify current
+ * location and move to next. "-" pressed will go back.
+ */
+ if (incrflag)
+ addr += nbytes ? -size : size;
+ nbytes = 1;
+#ifdef CONFIG_BOOT_RETRY_TIME
+ reset_cmd_timeout(); /* good enough to not time out */
+#endif
+ }
+#ifdef CONFIG_BOOT_RETRY_TIME
+ else if (nbytes == -2) {
+ break; /* timed out, exit the command */
+ }
+#endif
+ else {
+ char *endp;
+ i = simple_strtoul(console_buffer, &endp, 16);
+ nbytes = endp - console_buffer;
+ if (nbytes) {
+#ifdef CONFIG_BOOT_RETRY_TIME
+ /* good enough to not time out
+ */
+ reset_cmd_timeout();
+#endif
+ if (size == 4)
+ *((uint *)addr) = i;
+ else if (size == 2)
+ *((ushort *)addr) = i;
+ else
+ *((u_char *)addr) = i;
+ if (incrflag)
+ addr += size;
+ }
+ }
+ } while (nbytes);
+
+ mm_last_addr = addr;
+ mm_last_size = size;
+ return 0;
+}
+
+int do_mem_crc (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ ulong addr, length;
+ ulong crc;
+ ulong *ptr;
+
+ if (argc < 3) {
+ printf ("Usage:\n%s\n", cmdtp->usage);
+ return 1;
+ }
+
+ addr = simple_strtoul(argv[1], NULL, 16);
+ addr += base_address;
+
+ length = simple_strtoul(argv[2], NULL, 16);
+
+ crc = crc32 (0, (const uchar *)addr, length);
+
+ printf ("CRC32 for %08lx ... %08lx ==> %08lx\n",
+ addr, addr + length -1, crc);
+
+ if (argc > 3)
+ {
+ ptr = (ulong *)simple_strtoul(argv[3], NULL, 16);
+ *ptr = crc;
+ }
+
+ return 0;
+}
+
+#endif /* CFG_CMD_MEMORY */