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Diffstat (limited to 'common/cmd_mem.c')
| -rw-r--r-- | common/cmd_mem.c | 850 |
1 files changed, 850 insertions, 0 deletions
diff --git a/common/cmd_mem.c b/common/cmd_mem.c new file mode 100644 index 000000000..eb44f2e01 --- /dev/null +++ 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 */ |