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- --- a/cmd/pstore.c
- +++ b/cmd/pstore.c
- @@ -208,6 +208,58 @@ static int pstore_set(struct cmd_tbl *cm
- }
-
- /**
- + * pstore_check() - Check for pstore records
- + * @cmdtp: Command data struct pointer
- + * @flag: Command flag
- + * @argc: Command-line argument count
- + * @argv: Array of command-line arguments
- + *
- + * Return: 0 if there are records in pstore, 1 otherwise
- + */
- +static int pstore_check(struct cmd_tbl *cmdtp, int flag, int argc,
- + char * const argv[])
- +{
- + phys_addr_t ptr;
- + char *buffer;
- + u32 size;
- + int header_len = 0;
- + bool compressed;
- +
- + if (pstore_length == 0) {
- + printf("Please set PStore configuration\n");
- + return CMD_RET_USAGE;
- + }
- +
- + if (buffer_size == 0)
- + pstore_init_buffer_size();
- +
- + buffer = malloc_cache_aligned(buffer_size);
- +
- + ptr = pstore_addr;
- + phys_addr_t ptr_end = ptr + pstore_length - pstore_pmsg_size
- + - pstore_ftrace_size - pstore_console_size;
- +
- + while (ptr < ptr_end) {
- + size = pstore_get_buffer(PERSISTENT_RAM_SIG, ptr,
- + pstore_record_size, buffer);
- + ptr += pstore_record_size;
- +
- + if (size == 0)
- + continue;
- +
- + header_len = pstore_read_kmsg_hdr(buffer, &compressed);
- + if (header_len == 0)
- + continue;
- +
- + free(buffer);
- + return 0;
- + }
- +
- + free(buffer);
- + return 1;
- +}
- +
- +/**
- * pstore_print_buffer() - Print buffer
- * @type: buffer type
- * @buffer: buffer to print
- @@ -459,6 +511,7 @@ static int pstore_save(struct cmd_tbl *c
-
- static struct cmd_tbl cmd_pstore_sub[] = {
- U_BOOT_CMD_MKENT(set, 8, 0, pstore_set, "", ""),
- + U_BOOT_CMD_MKENT(check, 1, 0, pstore_check, "", ""),
- U_BOOT_CMD_MKENT(display, 3, 0, pstore_display, "", ""),
- U_BOOT_CMD_MKENT(save, 4, 0, pstore_save, "", ""),
- };
- @@ -566,6 +619,8 @@ U_BOOT_CMD(pstore, 10, 0, do_pstore,
- " 'pmsg-size' is the size of the user space logs record.\n"
- " 'ecc-size' enables/disables ECC support and specifies ECC buffer size in\n"
- " bytes (0 disables it, 1 is a special value, means 16 bytes ECC).\n"
- + "pstore check\n"
- + "- Returns true if there are records in pstore.\n"
- "pstore display [record-type] [nb]\n"
- "- Display existing records in pstore reserved memory. A 'record-type' can\n"
- " be given to only display records of this kind. 'record-type' can be one\n"
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