[PATCH v3 27/27] lmb: add logic to print lmb flag strings

[Sughosh Ganu]

Instead of printing the LMB flags as numerical values, print them as
strings. This makes it easier to understand what flags are associated
with the lmb region. Also make corresponding changes to the bdinfo
command's test code.

Signed-off-by: Sughosh Ganu <sughosh.g...@linaro.org>
---
Changes since V2:
* Change the logic to accomodate new value of LMB_NONE(0).
* s/print_region_flags()/lmb_print_region_flags().
* s/"LMB_NOMAP"/"no-map".
* s/"LMB_NOOVERWRITE"/"no-overwrite".

 lib/lmb.c | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/lib/lmb.c b/lib/lmb.c
index 11959760b6..0379798837 100644
--- a/lib/lmb.c
+++ b/lib/lmb.c
@@ -26,6 +26,19 @@ DECLARE_GLOBAL_DATA_PTR;
 
 static struct lmb lmb;
 
+static void lmb_print_region_flags(enum lmb_flags flags)
+{
+       uint64_t bitpos;
+       const char *flag_str[] = { "none", "no-map", "no-overwrite" };
+
+       do {
+               bitpos = flags ? fls(flags) - 1 : 0;
+               printf("%s", flag_str[bitpos]);
+               flags &= ~(1ull << bitpos);
+               flags ? puts(", ") : puts("\n");
+       } while (flags);
+}
+
 static void lmb_dump_region(struct alist *lmb_rgn_lst, char *name)
 {
        struct lmb_region *rgn = lmb_rgn_lst->data;
@@ -41,8 +54,9 @@ static void lmb_dump_region(struct alist *lmb_rgn_lst, char 
*name)
                end = base + size - 1;
                flags = rgn[i].flags;
 
-               printf(" %s[%d]\t[0x%llx-0x%llx], 0x%08llx bytes flags: %x\n",
-                      name, i, base, end, size, flags);
+               printf(" %s[%d]\t[0x%llx-0x%llx], 0x%08llx bytes flags: ",
+                      name, i, base, end, size);
+               lmb_print_region_flags(flags);
        }
 }
 
-- 
2.34.1