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@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; }