uboot-mediaktek: add support for PSTORE and check it on boot

[openwrt/staging/zorun.git] / package / boot / uboot-mediatek / patches / 230-cmd-add-pstore-check.patch

diff --git a/package/boot/uboot-mediatek/patches/230-cmd-add-pstore-check.patch b/package/boot/uboot-mediatek/patches/230-cmd-add-pstore-check.patch
new file mode 100644 (file)
index 0000000..587245d
--- /dev/null
+++ b/package/boot/uboot-mediatek/patches/230-cmd-add-pstore-check.patch
@@ -0,0 +1,78 @@
+--- a/cmd/pstore.c
++++ b/cmd/pstore.c
+@@ -207,6 +207,58 @@ 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
+@@ -458,6 +510,7 @@ 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, "", ""),
+ };
+@@ -531,6 +584,8 @@ 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"