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f5aa35c932
For sf commands, when '0' length is passed for erase, update, write or read, there might be undesired results. Ideally '0' length means nothing to do. So print 'ERROR: Invalid size 0' and return cmd failure when length '0' is passed to sf commands. Same thing applies for nand commands also. Example: ZynqMP> sf erase 0 0 ERROR: Invalid size 0 ZynqMP> sf write 10000 0 0 ERROR: Invalid size 0 ZynqMP> sf read 10000 0 0 ERROR: Invalid size 0 ZynqMP> sf update 1000 10000 0 ERROR: Invalid size 0 ZynqMP> Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@amd.com> Link: https://lore.kernel.org/r/20230516115236.22458-1-ashok.reddy.soma@amd.com Signed-off-by: Michal Simek <michal.simek@amd.com>
105 lines
2.0 KiB
C
105 lines
2.0 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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#include <common.h>
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#include <jffs2/jffs2.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/partitions.h>
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#include <linux/string.h>
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#include <mtd.h>
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static int get_part(const char *partname, int *idx, loff_t *off, loff_t *size,
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loff_t *maxsize, int devtype)
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{
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#ifdef CONFIG_CMD_MTDPARTS
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struct mtd_device *dev;
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struct part_info *part;
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u8 pnum;
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int ret;
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ret = mtdparts_init();
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if (ret)
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return ret;
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ret = find_dev_and_part(partname, &dev, &pnum, &part);
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if (ret)
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return ret;
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if (dev->id->type != devtype) {
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printf("not same typ %d != %d\n", dev->id->type, devtype);
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return -1;
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}
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*off = part->offset;
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*size = part->size;
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*maxsize = part->size;
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*idx = dev->id->num;
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return 0;
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#else
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puts("mtdparts support missing.\n");
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return -1;
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#endif
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}
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int mtd_arg_off(const char *arg, int *idx, loff_t *off, loff_t *size,
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loff_t *maxsize, int devtype, uint64_t chipsize)
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{
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if (!str2off(arg, off))
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return get_part(arg, idx, off, size, maxsize, devtype);
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if (*off >= chipsize) {
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puts("Offset exceeds device limit\n");
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return -1;
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}
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*maxsize = chipsize - *off;
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*size = *maxsize;
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return 0;
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}
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int mtd_arg_off_size(int argc, char *const argv[], int *idx, loff_t *off,
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loff_t *size, loff_t *maxsize, int devtype,
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uint64_t chipsize)
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{
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int ret;
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if (argc == 0) {
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*off = 0;
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*size = chipsize;
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*maxsize = *size;
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goto print;
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}
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ret = mtd_arg_off(argv[0], idx, off, size, maxsize, devtype,
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chipsize);
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if (ret)
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return ret;
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if (argc == 1)
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goto print;
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if (!str2off(argv[1], size)) {
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printf("'%s' is not a number\n", argv[1]);
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return -1;
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}
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if (*size > *maxsize) {
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puts("Size exceeds partition or device limit\n");
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return -1;
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}
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if (*size == 0) {
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debug("ERROR: Invalid size 0\n");
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return -1;
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}
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print:
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printf("device %d ", *idx);
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if (*size == chipsize)
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puts("whole chip\n");
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else
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printf("offset 0x%llx, size 0x%llx\n",
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(unsigned long long)*off, (unsigned long long)*size);
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return 0;
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}
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