[PATCH v2 1/1] sandbox: don't refer to symbol _init

[Heinrich Schuchardt]

GCC provides a symbol _init in crti.o on x86_64 and aarch64 but not on
RISC-V. The following lines leads to a build error for sandbox_defconfig on
RISC-V due to the missing symbol:

    common/board_f.c:269:
    #elif defined(CONFIG_SANDBOX) || defined(CONFIG_EFI_APP)
            gd->mon_len = (ulong)&_end - (ulong)_init;

The sandbox code is not copied into the memory allocated using mmap().
Hence we can safely use gd->mon_len = 0 to avoid the reference to _init.

Signed-off-by: Heinrich Schuchardt <xypron.glpk at gmx.de>
Reviewed-by: Bin Meng <bmeng.cn at gmail.com>
---
v2:
	fix typo in commit message
---
 common/board_f.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/common/board_f.c b/common/board_f.c
index 203e965799..c1b8e63e56 100644
--- a/common/board_f.c
+++ b/common/board_f.c
@@ -265,7 +265,9 @@ static int setup_mon_len(void)
 {
 #if defined(__ARM__) || defined(__MICROBLAZE__)
 	gd->mon_len = (ulong)&__bss_end - (ulong)_start;
-#elif defined(CONFIG_SANDBOX) || defined(CONFIG_EFI_APP)
+#elif defined(CONFIG_SANDBOX)
+	gd->mon_len = 0;
+#elif defined(CONFIG_EFI_APP)
 	gd->mon_len = (ulong)&_end - (ulong)_init;
 #elif defined(CONFIG_NIOS2) || defined(CONFIG_XTENSA)
 	gd->mon_len = CONFIG_SYS_MONITOR_LEN;
--
2.31.1