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authorAaron Durbin <adurbin@chromium.org>2014-08-12 17:55:02 -0500
committerPatrick Georgi <pgeorgi@google.com>2015-03-26 00:27:08 +0100
commit6941b77c879b5411844914dd87796a28b04e3caa (patch)
tree7b138b36106717660b44b7ed48b35783f1523d68 /src
parent4633dc1887057ac0b27502c6c719b332b46eb352 (diff)
ryu: support for DMA region
Currently ryu needs a DMA region in order to communicate with USB devices. Therefore, add that region to the memory map. BUG=chrome-os-partner:31293 BRANCH=None TEST=With usb added am able to talk to a USB mass storage device albeit inconsistently. Change-Id: I7efaf2ba44cc94dc64af3f1cd916bdc5c7ff0795 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: e93389479518ee28dc3477da0c6e6e33fa8a47d1 Original-Change-Id: I6b5c052ccaafce30705349e07639dffbb994901f Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/212162 Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org> Original-Commit-Queue: Furquan Shaikh <furquan@chromium.org> Reviewed-on: http://review.coreboot.org/8926 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src')
-rw-r--r--src/mainboard/google/rush_ryu/Kconfig8
-rw-r--r--src/mainboard/google/rush_ryu/mainboard.c20
2 files changed, 28 insertions, 0 deletions
diff --git a/src/mainboard/google/rush_ryu/Kconfig b/src/mainboard/google/rush_ryu/Kconfig
index ec6eadb86b..c6929af589 100644
--- a/src/mainboard/google/rush_ryu/Kconfig
+++ b/src/mainboard/google/rush_ryu/Kconfig
@@ -91,4 +91,12 @@ config EC_GOOGLE_CHROMEEC_I2C_BUS
hex
default 1
+config DRAM_DMA_START
+ hex
+ default 0xc0000000
+
+config DRAM_DMA_SIZE
+ hex
+ default 0x00200000
+
endif # BOARD_GOOGLE_RUSH_RYU
diff --git a/src/mainboard/google/rush_ryu/mainboard.c b/src/mainboard/google/rush_ryu/mainboard.c
index 93ffca9adc..1e80b5b9b2 100644
--- a/src/mainboard/google/rush_ryu/mainboard.c
+++ b/src/mainboard/google/rush_ryu/mainboard.c
@@ -17,8 +17,10 @@
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#include <arch/mmu.h>
#include <device/device.h>
#include <boot/coreboot_tables.h>
+#include <memrange.h>
#include <soc/addressmap.h>
#include <soc/clock.h>
@@ -63,3 +65,21 @@ struct chip_operations mainboard_ops = {
.name = "rush_ryu",
.enable_dev = mainboard_enable,
};
+
+void mainboard_add_memory_ranges(struct memranges *map)
+{
+ /* Create non-cacheable region for DMA operations. */
+ memranges_insert(map, CONFIG_DRAM_DMA_START, CONFIG_DRAM_DMA_SIZE,
+ MA_MEM | MA_MEM_NC | MA_NS | MA_RW);
+}
+
+void lb_board(struct lb_header *header)
+{
+ struct lb_range *dma;
+
+ dma = (struct lb_range *)lb_new_record(header);
+ dma->tag = LB_TAB_DMA;
+ dma->size = sizeof(*dma);
+ dma->range_start = CONFIG_DRAM_DMA_START;
+ dma->range_size = CONFIG_DRAM_DMA_SIZE;
+}