[U-Boot] [PATCH 3/3] common: bouncebuf: handle address in sram for rockchip platform

[Kever Yang]

Rockchip SOC's mmc controller does not support read data
from mmc to sram, we need a bounce buffer(in sdram), and then
copy to sram.

Signed-off-by: Kever Yang <kever.yang at rock-chips.com>
---

 common/bouncebuf.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/common/bouncebuf.c b/common/bouncebuf.c
index a7098e2caf..364fb17c96 100644
--- a/common/bouncebuf.c
+++ b/common/bouncebuf.c
@@ -26,6 +26,18 @@ static int addr_aligned(struct bounce_buffer *state)
 		return 0;
 	}
 
+#ifdef CONFIG_ARCH_ROCKCHIP
+	/*
+	 * Rockchip SOC's mmc controller does not support read data
+	 * from mmc to sram, we need a bounce buffer(in sdram), and then
+	 * copy to sram.
+	 */
+	if (((ulong)state->user_buffer & 0xfff80000) ==
+	    CONFIG_ROCKCHIP_IRAM_BASE) {
+		debug("Unsupport IRAM space %p\n", state->user_buffer);
+		return 0;
+	}
+#endif
 	/* Aligned */
 	return 1;
 }
-- 
2.20.1