Add zero-copy ramdisk support (requires corresponding kernel support!)
diff --git a/common/cmd_bootm.c b/common/cmd_bootm.c
index fa32d46..af62bec 100644
--- a/common/cmd_bootm.c
+++ b/common/cmd_bootm.c
@@ -374,6 +374,7 @@
ulong cmd_start, cmd_end;
ulong initrd_high;
ulong data;
+ int initrd_copy_to_ram = 1;
char *cmdline;
char *s;
bd_t *kbd;
@@ -385,6 +386,8 @@
* turning the "load high" feature off. This is intentional.
*/
initrd_high = simple_strtoul(s, NULL, 16);
+ if (initrd_high == ~0)
+ initrd_copy_to_ram = 0;
} else { /* not set, no restrictions to load high */
initrd_high = ~0;
}
@@ -567,6 +570,10 @@
}
if (data) {
+ if (!initrd_copy_to_ram) { /* zero-copy ramdisk support */
+ initrd_start = data;
+ initrd_end = initrd_start + len;
+ } else {
initrd_start = (ulong)kbd - len;
initrd_start &= ~(4096 - 1); /* align on page */
@@ -621,6 +628,7 @@
memmove ((void *)initrd_start, (void *)data, len);
#endif /* CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG */
printf ("OK\n");
+ }
} else {
initrd_start = 0;
initrd_end = 0;