[U-Boot] [PATCH] fastboot: common: fix default fastboot_boot on 64-bit

[Neil Armstrong]

When booting on a 64-bit system, the boot_addr_start buffer is not
large enough to contain a 64-bit number, thus leading to a crash
even if fastboot_buf_addr is valid, only the high part of the address
will be printed to boot_addr_start :

fastboot with fastboot_buf_addr = 0x0000000006000000:
  downloading of 92239872 bytes finished
  Booting kernel at 0x00000000...

  "Synchronous Abort" handler, esr 0x96000004
  elr: 00000000010561f4 lr : 0000000001056fac (reloc)
  <snip>
  x28: 000000007df2d38f x29: 000000007df2d1b0

  Resetting CPU ...

With this fix, boot_addr_start can have the full 64-bit address passed
to bootm.

Fixes: f73a7df984a9 ("net: fastboot: Merge AOSP UDP fastboot")
Cc: Simon Glass <sjg at chromium.org>
Cc: Alex Kiernan <alex.kiernan at gmail.com>
Cc: Sam Protsenko <semen.protsenko at linaro.org>
Signed-off-by: Neil Armstrong <narmstrong at baylibre.com>
---
 drivers/fastboot/fb_common.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/fastboot/fb_common.c b/drivers/fastboot/fb_common.c
index c6e06aab7a..17eca73be0 100644
--- a/drivers/fastboot/fb_common.c
+++ b/drivers/fastboot/fb_common.c
@@ -119,7 +119,7 @@ void fastboot_boot(void)
 	if (s) {
 		run_command(s, CMD_FLAG_ENV);
 	} else {
-		static char boot_addr_start[12];
+		static char boot_addr_start[20];
 		static char *const bootm_args[] = {
 			"bootm", boot_addr_start, NULL
 		};
-- 
2.20.1